2024
DeMars, L. A.; Bauer, A.; Stone, B. D.; Rolland, J. P.; Suleski, T. J.
Workflow for modeling of generalized mid-spatial frequency errors in optical systems Journal Article
In: Optics Express, vol. 32, iss. 2, pp. 2688-2703, 2024.
Abstract | Links | BibTeX | Tags: CeFO, design, manufacturing, metrology, Mid-Spatial Frequency error
@article{DeMars24a,
title = {Workflow for modeling of generalized mid-spatial frequency errors in optical systems},
author = {L. A. DeMars and A. Bauer and B.D. Stone and J.P. Rolland and T.J. Suleski},
doi = {https://doi.org/10.1364/OE.511349},
year = {2024},
date = {2024-01-15},
urldate = {2024-01-15},
journal = {Optics Express},
volume = {32},
issue = {2},
pages = {2688-2703},
abstract = {We propose a workflow for modeling generalized mid-spatial frequency (MSF) errors in optical imaging systems. This workflow enables the classification of MSF distributions, filtering of bandlimited signatures, propagation of MSF errors to the exit pupil, and performance predictions that differentiate performance impacts due to the MSF distributions. We demonstrate the workflow by modeling the performance impacts of MSF errors for both transmissive and reflective imaging systems with near-diffraction-limited performance.},
keywords = {CeFO, design, manufacturing, metrology, Mid-Spatial Frequency error},
pubstate = {published},
tppubtype = {article}
}
We propose a workflow for modeling generalized mid-spatial frequency (MSF) errors in optical imaging systems. This workflow enables the classification of MSF distributions, filtering of bandlimited signatures, propagation of MSF errors to the exit pupil, and performance predictions that differentiate performance impacts due to the MSF distributions. We demonstrate the workflow by modeling the performance impacts of MSF errors for both transmissive and reflective imaging systems with near-diffraction-limited performance.
2023
Yesiltepe, M.; Bauer, A.; Karci, O.; Rolland, J. P.
Sigma vector calculations in nodal aberration theory and experimental validation using a Cassegrain telescope Journal Article
In: Optics Express, vol. 31, iss. 25, pp. 42373-42387, 2023.
Abstract | Links | BibTeX | Tags: CeFO related, design
@article{Yesiltepe2023,
title = {Sigma vector calculations in nodal aberration theory and experimental validation using a Cassegrain telescope},
author = {M. Yesiltepe and A. Bauer and O. Karci and J. P. Rolland},
doi = {https://doi.org/10.1364/OE.502744},
year = {2023},
date = {2023-12-01},
urldate = {2023-12-01},
journal = {Optics Express},
volume = {31},
issue = {25},
pages = {42373-42387},
abstract = {Nodal Aberration Theory (NAT) was developed to explain the field dependency of aberration field centers in the image plane of nominally rotationally symmetric optical systems that have lost their symmetry through misalignments. A new insight into the theory led to calculating the sigma vectors, which locate the aberration field centers, using the angle between a real-ray trace of the optical axis ray (OAR) and the normal of the local surface where “local” refers to the object and image optical spaces of that surface. Here, we detail the sigma vector calculations for general optical systems and provide an experimental investigation of a misaligned system with a high-precision customized Cassegrain telescope. In the simulations, a Newtonian telescope, a Cassegrain telescope, and a three-mirror anastigmat telescope were misaligned intentionally in ray-tracing software. The sigma vectors were calculated analytically for the third-order aberrations of astigmatism and coma. Experimentally, the same perturbations were implemented for the Cassegrain telescope system, and the aberrations were quantified through interferometric measurements on a grid of field points in the image plane that verified the analytical derivation and simulations.},
keywords = {CeFO related, design},
pubstate = {published},
tppubtype = {article}
}
Nodal Aberration Theory (NAT) was developed to explain the field dependency of aberration field centers in the image plane of nominally rotationally symmetric optical systems that have lost their symmetry through misalignments. A new insight into the theory led to calculating the sigma vectors, which locate the aberration field centers, using the angle between a real-ray trace of the optical axis ray (OAR) and the normal of the local surface where “local” refers to the object and image optical spaces of that surface. Here, we detail the sigma vector calculations for general optical systems and provide an experimental investigation of a misaligned system with a high-precision customized Cassegrain telescope. In the simulations, a Newtonian telescope, a Cassegrain telescope, and a three-mirror anastigmat telescope were misaligned intentionally in ray-tracing software. The sigma vectors were calculated analytically for the third-order aberrations of astigmatism and coma. Experimentally, the same perturbations were implemented for the Cassegrain telescope system, and the aberrations were quantified through interferometric measurements on a grid of field points in the image plane that verified the analytical derivation and simulations.
Xiong, P.; Nikolov, D. K.; Cheng, F.; Rolland, J. P.; Vamivakas, A. N.
All-dielectric hybrid VIS-NIR dual-function metasurface Online
2023, visited: 13.10.2023.
Abstract | Links | BibTeX | Tags: CeFO related, design
@online{Xiong2023,
title = {All-dielectric hybrid VIS-NIR dual-function metasurface},
author = {P. Xiong and D. K. Nikolov and F. Cheng and J. P. Rolland and A. N. Vamivakas },
url = {https://arxiv.org/abs/2310.09393},
doi = {https://doi.org/10.48550/arXiv.2310.09393},
year = {2023},
date = {2023-10-13},
urldate = {2023-10-13},
abstract = {Metasurfaces are a promising technology that can serve as a compact alternative to conventional optics while providing multiple functions depending on the properties of the incident light, such as the wavelength, polarization, and incident angle. Here, we demonstrate a hybrid VIS-NIR dielectriac metasurface that can reflect 940 nm light into a specified direction while transmitting visible light (450-750 nm). The dual functionality is realized by combining an aperiodic distributed Bragg reflector with dielectric meta-tokens. Experimental demonstration is also reported, showing an anomalous reflection of near-infrared (NIR) light within a 20o full field-of-view (FOV) and the transmission of wavelengths from 450 nm to 750 nm.},
keywords = {CeFO related, design},
pubstate = {published},
tppubtype = {online}
}
Metasurfaces are a promising technology that can serve as a compact alternative to conventional optics while providing multiple functions depending on the properties of the incident light, such as the wavelength, polarization, and incident angle. Here, we demonstrate a hybrid VIS-NIR dielectriac metasurface that can reflect 940 nm light into a specified direction while transmitting visible light (450-750 nm). The dual functionality is realized by combining an aperiodic distributed Bragg reflector with dielectric meta-tokens. Experimental demonstration is also reported, showing an anomalous reflection of near-infrared (NIR) light within a 20o full field-of-view (FOV) and the transmission of wavelengths from 450 nm to 750 nm.
DeMars, L. A.; Suleski, T. J.
Use of pupil-difference moments for predicting optical performance impacts of generalized mid-spatial frequency surface errors Journal Article
In: Optics Express, vol. 31, iss. 22, pp. 36337-36349, 2023.
Links | BibTeX | Tags: CeFO, design, manufacturing, metrology, Mid-Spatial Frequency error
@article{DeMars23b,
title = {Use of pupil-difference moments for predicting optical performance impacts of generalized mid-spatial frequency surface errors},
author = {L. A. DeMars and T.J. Suleski},
doi = {https://doi.org/10.1364/OE.503735},
year = {2023},
date = {2023-10-13},
urldate = {2023-10-13},
journal = {Optics Express},
volume = {31},
issue = {22},
pages = {36337-36349},
keywords = {CeFO, design, manufacturing, metrology, Mid-Spatial Frequency error},
pubstate = {published},
tppubtype = {article}
}
Bauer, A.; Zhang, C.; Rolland, J. P.
Exit pupil quality analysis and optimization in freeform afocal telescope systems Journal Article
In: Optics Express, vol. 31, iss. 15, pp. 24691-24701, 2023.
Abstract | Links | BibTeX | Tags: CeFO, design
@article{Bauer2023,
title = {Exit pupil quality analysis and optimization in freeform afocal telescope systems},
author = {A. Bauer and C. Zhang and J. P. Rolland},
doi = {https://doi.org/10.1364/OE.496444},
year = {2023},
date = {2023-07-17},
urldate = {2023-07-17},
journal = {Optics Express},
volume = {31},
issue = {15},
pages = {24691-24701},
abstract = {Afocal telescopes are often used as foreoptics to existing imaging systems to allow for application flexibility. To properly combine an afocal telescope with an existing imaging system, the exit pupil of the afocal telescope and the entrance pupil of the imaging system must be coincident. Additionally, the exit pupil of the afocal telescope must be well-formed; that is, it must be the correct size and shape to mitigate pupil-matching challenges. This work introduces processes for designing freeform afocal telescopes with an emphasis on understanding how to analyze and control the exit pupil quality of such systems. The included 3-mirror design examples demonstrate the advantages of using freeform surfaces in afocal systems and quantify the tradeoffs required to improve the exit pupil quality.},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {article}
}
Afocal telescopes are often used as foreoptics to existing imaging systems to allow for application flexibility. To properly combine an afocal telescope with an existing imaging system, the exit pupil of the afocal telescope and the entrance pupil of the imaging system must be coincident. Additionally, the exit pupil of the afocal telescope must be well-formed; that is, it must be the correct size and shape to mitigate pupil-matching challenges. This work introduces processes for designing freeform afocal telescopes with an emphasis on understanding how to analyze and control the exit pupil quality of such systems. The included 3-mirror design examples demonstrate the advantages of using freeform surfaces in afocal systems and quantify the tradeoffs required to improve the exit pupil quality.
DeMars, L. A.; Rueda, S.; Suleski, T. J.
MSFLib: A Data Library of Mid-Spatial Frequency Surface Errors for Optical Modeling and Specification Proceedings
2023, ISBN: 978-1-957171-22-7, (Optical Fabrication and Testing 2023 Québec City, Québec Canada 4–8 June 2023).
Abstract | Links | BibTeX | Tags: CeFO, design, manufacturing, metrology, Mid-Spatial Frequency error
@proceedings{DeMars23d,
title = {MSFLib: A Data Library of Mid-Spatial Frequency Surface Errors for Optical Modeling and Specification},
author = {L. A. DeMars and S. Rueda and T.J. Suleski},
url = {https://opg.optica.org/abstract.cfm?uri=OFT-2023-OW4B.2},
isbn = {978-1-957171-22-7},
year = {2023},
date = {2023-06-08},
urldate = {2023-06-08},
abstract = {We describe the development of a data library of mid-spatial frequency surface errors for optical components. This resource enables better understanding of specification of mid-spatial frequency surface errors and their connections to optical performance.},
note = {Optical Fabrication and Testing 2023
Québec City, Québec Canada
4–8 June 2023},
keywords = {CeFO, design, manufacturing, metrology, Mid-Spatial Frequency error},
pubstate = {published},
tppubtype = {proceedings}
}
We describe the development of a data library of mid-spatial frequency surface errors for optical components. This resource enables better understanding of specification of mid-spatial frequency surface errors and their connections to optical performance.
DeMars, L. A.; Suleski, T. J.
Pupil-difference moments for estimating relative modulation from general mid-spatial frequency surface errors Journal Article
In: Optics Letters, vol. 48, iss. 9, pp. 2492-2495, 2023.
Links | BibTeX | Tags: CeFO, design, manufacturing, metrology
@article{DeMars23a,
title = {Pupil-difference moments for estimating relative modulation from general mid-spatial frequency surface errors},
author = {L. A. DeMars and T.J. Suleski},
doi = {https://doi.org/10.1364/OL.491408},
year = {2023},
date = {2023-05-01},
urldate = {2023-05-01},
journal = {Optics Letters},
volume = {48},
issue = {9},
pages = {2492-2495},
keywords = {CeFO, design, manufacturing, metrology},
pubstate = {published},
tppubtype = {article}
}
Moein, S.; Gurganus, D.; Davies, M. A.; Boreman, G. D.; Suleski, T. J.
Fabrication and characterization of freeform phase plates for extended depth of field imaging Journal Article
In: Optics Continuum, vol. 2, iss. 4, pp. 769-782, 2023.
Links | BibTeX | Tags: CeFO, design, manufacturing, metrology, testing
@article{Moein23a,
title = {Fabrication and characterization of freeform phase plates for extended depth of field imaging},
author = {S. Moein and D. Gurganus and M. A. Davies and G.D. Boreman and T.J. Suleski},
doi = {https://doi.org/10.1364/OPTCON.480895},
year = {2023},
date = {2023-03-27},
urldate = {2023-03-27},
journal = {Optics Continuum},
volume = {2},
issue = {4},
pages = {769-782},
keywords = {CeFO, design, manufacturing, metrology, testing},
pubstate = {published},
tppubtype = {article}
}
Goodsell, J.; Xiong, P.; Nikolov, D. K.; Vamivakas, A. N.; Rolland, J. P.
Metagrating meets the geometry-based efficiency limit for AR waveguide in-couplers Journal Article
In: Optics Express, vol. 31, iss. 3, pp. 4599-4614, 2023.
Abstract | Links | BibTeX | Tags: CeFO related, design
@article{Goodsell2023,
title = {Metagrating meets the geometry-based efficiency limit for AR waveguide in-couplers},
author = {J. Goodsell and P. Xiong and D. K. Nikolov and A. N. Vamivakas and J. P. Rolland},
doi = {https://doi.org/10.1364/OE.480092},
year = {2023},
date = {2023-01-24},
urldate = {2023-01-24},
journal = {Optics Express},
volume = {31},
issue = {3},
pages = {4599-4614},
abstract = {Recently, augmented reality (AR) displays have attracted considerable attention due to the highly immersive and realistic viewer experience they can provide. One key challenge of AR displays is the fundamental trade-off between the extent of the field-of-view (FOV) and the size of the eyebox, set by the conservation of etendue sets this trade-off. Exit-pupil expansion (EPE) is one possible solution to this problem. However, it comes at the cost of distributing light over a larger area, decreasing the overall system's brightness. In this work, we show that the geometry of the waveguide and the in-coupler sets a fundamental limit on how efficient the combiner can be for a given FOV. This limit can be used as a tool for waveguide designers to benchmark the in-coupling efficiency of their in-coupler gratings. We design a metasurface-based grating (metagrating) and a commonly used SRG as in-couplers using the derived limit to guide optimization. We then compare the diffractive efficiencies of the two types of in-couplers to the theoretical efficiency limit. For our chosen waveguide geometry, the metagrating's 28% efficiency surpasses the SRG's 20% efficiency and nearly matches the geometry-based limit of 29% due to the superior angular response control of metasurfaces compared to SRGs. This work provides new insight into the efficiency limit of waveguide-based combiners and paves a novel path toward implementing metasurfaces in efficient waveguide AR displays.},
keywords = {CeFO related, design},
pubstate = {published},
tppubtype = {article}
}
Recently, augmented reality (AR) displays have attracted considerable attention due to the highly immersive and realistic viewer experience they can provide. One key challenge of AR displays is the fundamental trade-off between the extent of the field-of-view (FOV) and the size of the eyebox, set by the conservation of etendue sets this trade-off. Exit-pupil expansion (EPE) is one possible solution to this problem. However, it comes at the cost of distributing light over a larger area, decreasing the overall system's brightness. In this work, we show that the geometry of the waveguide and the in-coupler sets a fundamental limit on how efficient the combiner can be for a given FOV. This limit can be used as a tool for waveguide designers to benchmark the in-coupling efficiency of their in-coupler gratings. We design a metasurface-based grating (metagrating) and a commonly used SRG as in-couplers using the derived limit to guide optimization. We then compare the diffractive efficiencies of the two types of in-couplers to the theoretical efficiency limit. For our chosen waveguide geometry, the metagrating's 28% efficiency surpasses the SRG's 20% efficiency and nearly matches the geometry-based limit of 29% due to the superior angular response control of metasurfaces compared to SRGs. This work provides new insight into the efficiency limit of waveguide-based combiners and paves a novel path toward implementing metasurfaces in efficient waveguide AR displays.
Liu, Y.; Steidle, J.; Rolland, J. P.
Intrinsic aberration coefficients for plane-symmetric optical systems consisting of spherical surfaces Journal Article
In: Journal of the Optical Society of America A, vol. 40, iss. 2, pp. 378-387, 2023.
Abstract | Links | BibTeX | Tags: CeFO, design
@article{Liu2023,
title = {Intrinsic aberration coefficients for plane-symmetric optical systems consisting of spherical surfaces},
author = {Y. Liu and J. Steidle and J. P. Rolland},
url = {https://doi.org/10.1364/JOSAA.477962},
doi = {https://doi.org/10.1364/JOSAA.477962},
year = {2023},
date = {2023-01-20},
urldate = {2023-01-20},
journal = {Journal of the Optical Society of America A},
volume = {40},
issue = {2},
pages = {378-387},
abstract = {This paper presents the analytical form of the intrinsic aberration coefficients for spherical plane-symmetric optical systems expressed as a function of first-order system parameters and the paraxial chief and marginal ray angles and heights. The derived aberration coefficients are in the third and fourth groups with the multiplication of two or three vector products of pupil and field vectors.},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {article}
}
This paper presents the analytical form of the intrinsic aberration coefficients for spherical plane-symmetric optical systems expressed as a function of first-order system parameters and the paraxial chief and marginal ray angles and heights. The derived aberration coefficients are in the third and fourth groups with the multiplication of two or three vector products of pupil and field vectors.
2022
Shadalou, S.; Gurganus, D.; Cassarly, W. J.; Davies, M. A.; Suleski, T. J.
Design, fabrication, and characterization of a tunable LED-based illuminator using refractive freeform arrays Journal Article
In: Optics Express, vol. 30, no. 23, pp. 42749-42761, 2022.
Links | BibTeX | Tags: CeFO, design, manufacturing, metrology
@article{Shadalou22b,
title = {Design, fabrication, and characterization of a tunable LED-based illuminator using refractive freeform arrays},
author = {S. Shadalou and D. Gurganus and W. J. Cassarly and M. A. Davies and T.J. Suleski},
doi = {https://doi.org/10.1364/OE.474842},
year = {2022},
date = {2022-11-04},
urldate = {2022-11-04},
journal = {Optics Express},
volume = {30},
number = {23},
pages = {42749-42761},
keywords = {CeFO, design, manufacturing, metrology},
pubstate = {published},
tppubtype = {article}
}
Moein, S.; Shadalou, S.; Suleski, T. J.
PSF engineering with variable logarithmic phase plates for the extended depth of field Journal Article
In: Optics Continuum, vol. 1, pp. 1579-1592, 2022.
Links | BibTeX | Tags: CeFO, design
@article{Moein22a,
title = {PSF engineering with variable logarithmic phase plates for the extended depth of field},
author = {S. Moein and S. Shadalou and T.J. Suleski},
doi = {https://doi.org/10.1364/OPTCON.465138},
year = {2022},
date = {2022-07-07},
urldate = {2022-07-07},
journal = {Optics Continuum},
volume = {1},
pages = {1579-1592},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {article}
}
Shadalou, S.; Suleski, T. J.
General design method for dynamic freeform optics with variable functionality Journal Article
In: Optics Express, vol. 30, iss. 11, pp. 19974-19989, 2022.
Links | BibTeX | Tags: CeFO, design
@article{Shadalou22a,
title = {General design method for dynamic freeform optics with variable functionality},
author = {S. Shadalou and T.J. Suleski},
doi = {https://doi.org/10.1364/OE.460078},
year = {2022},
date = {2022-05-19},
journal = {Optics Express},
volume = {30},
issue = {11},
pages = {19974-19989},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {article}
}
2019
Schiesser, E. M.; Bauer, A.; Rolland, J. P.
Estimating field-dependent nodal aberration theory coefficients from Zernike full-field displays by utilizing eighth-order astigmatism Journal Article
In: JOSA A, vol. 36, no. 12, pp. 2115-2128, 2019.
Abstract | Links | BibTeX | Tags: CeFO, design
@article{Schiess2_2019,
title = {Estimating field-dependent nodal aberration theory coefficients from Zernike full-field displays by utilizing eighth-order astigmatism},
author = {E. M. Schiesser and A. Bauer and J. P. Rolland},
url = {
https://doi.org/10.1364/JOSAA.36.002115
},
year = {2019},
date = {2019-12-13},
journal = {JOSA A},
volume = {36},
number = {12},
pages = {2115-2128},
abstract = {When using freeform surfaces in optical design, the field dependence of the aberrations can become quite complex, and understanding these aberrations facilitates the design process. Here we calculate the field dependence of low-order Zernike astigmatism (Z5/6) up to the eighth order in nodal aberration theory (NAT). Expansion of NAT astigmatism terms to the eighth order facilitates a more accurate fit to the Zernike astigmatism data. We then show how this estimated field dependence can be used to quantitatively analyze a freeform telescope design. This analysis tool adds to the optical designer’s arsenal when up against the challenge of designing with freeform optics.},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {article}
}
When using freeform surfaces in optical design, the field dependence of the aberrations can become quite complex, and understanding these aberrations facilitates the design process. Here we calculate the field dependence of low-order Zernike astigmatism (Z5/6) up to the eighth order in nodal aberration theory (NAT). Expansion of NAT astigmatism terms to the eighth order facilitates a more accurate fit to the Zernike astigmatism data. We then show how this estimated field dependence can be used to quantitatively analyze a freeform telescope design. This analysis tool adds to the optical designer’s arsenal when up against the challenge of designing with freeform optics.
Alonso, Kevin Liang; G. W. Forbes; Miguel A.
Rapidly decaying Fourier-like bases Journal Article
In: Optics Express, vol. 27, no. 22, pp. 32263-32276, 2019.
Abstract | Links | BibTeX | Tags: CeFO, design
@article{Alonso2019,
title = {Rapidly decaying Fourier-like bases},
author = {Kevin Liang; G. W. Forbes; Miguel A. Alonso},
editor = {OSA},
doi = {10.1364/OE.27.032263},
year = {2019},
date = {2019-10-23},
journal = {Optics Express},
volume = {27},
number = {22},
pages = {32263-32276},
abstract = {In many applications it is natural to seek to extract a characteristic scale for a function’s variations by reference to a frequency spectrum. Although the moments of a spectrum appear to promise simple options to make such a connection, standard Fourier methods fail to yield finite moments when the function’s domain is itself finite. We investigate a family of Fourier-like bases with rapidly decaying spectra that yield well-defined moments for such cases. These bases are derived by considering classes of functions for which a normalised mean square derivative is stationary. They are shown to provide precisely the type of spectrum needed to complete a recent investigation of mid-spatial frequency structure on optical surfaces [K. Liang, Opt. Express 27, 3390-3408 (2019)].},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {article}
}
In many applications it is natural to seek to extract a characteristic scale for a function’s variations by reference to a frequency spectrum. Although the moments of a spectrum appear to promise simple options to make such a connection, standard Fourier methods fail to yield finite moments when the function’s domain is itself finite. We investigate a family of Fourier-like bases with rapidly decaying spectra that yield well-defined moments for such cases. These bases are derived by considering classes of functions for which a normalised mean square derivative is stationary. They are shown to provide precisely the type of spectrum needed to complete a recent investigation of mid-spatial frequency structure on optical surfaces [K. Liang, Opt. Express 27, 3390-3408 (2019)].
Schiesser, E. M.; Bauer, A.; Rolland, J. P.
In: Optics Express, vol. 27, no. 15, pp. 21750-21765, 2019.
Abstract | Links | BibTeX | Tags: CeFO, design
@article{Schiess1_2019,
title = {Effect of freeform surfaces on the volume and performance of unobscured three mirror imagers in comparison with off-axis rotationally symmetric polynomials},
author = {E. M. Schiesser and A. Bauer and J. P. Rolland},
url = {https://doi.org/10.1364/OE.27.021750},
year = {2019},
date = {2019-07-25},
journal = {Optics Express},
volume = {27},
number = {15},
pages = {21750-21765},
abstract = {The invention of new design techniques for unobscured reflective systems using freeform surfaces has expanded the optical design space for these system types. We illustrate how the use of freeform surfaces can expand the design space of the Three Mirror Compact design type to allow both better performance at a given system volume and smaller volumes for a given performance target. By evolving designs using conventional off-axis asphere type surfaces to ever smaller volumes and then converting these off-axis asphere descriptions to centered Zernike descriptions, we show that the wavefront error improves by up to 69% in this case by allowing the surfaces to break rotational symmetry. In addition, we show that evolving designs from the same starting point as the off-axis asphere designs but instead using a centered Zernike description can produce a design with a 39% smaller volume in this case while maintaining the same diffraction-limited performance.},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {article}
}
The invention of new design techniques for unobscured reflective systems using freeform surfaces has expanded the optical design space for these system types. We illustrate how the use of freeform surfaces can expand the design space of the Three Mirror Compact design type to allow both better performance at a given system volume and smaller volumes for a given performance target. By evolving designs using conventional off-axis asphere type surfaces to ever smaller volumes and then converting these off-axis asphere descriptions to centered Zernike descriptions, we show that the wavefront error improves by up to 69% in this case by allowing the surfaces to break rotational symmetry. In addition, we show that evolving designs from the same starting point as the off-axis asphere designs but instead using a centered Zernike description can produce a design with a 39% smaller volume in this case while maintaining the same diffraction-limited performance.
ALEMÁN-CASTAÑEDA, LUIS A.; ALONSO, MIGUEL A.
Study of reflectors for illumination via conformal maps Journal Article
In: Optics Letters, vol. 44, no. 15, pp. 3809-3812, 2019.
Abstract | Links | BibTeX | Tags: design, related
@article{ALONSOALEMAN2019,
title = {Study of reflectors for illumination via conformal maps},
author = {LUIS A. ALEMÁN-CASTAÑEDA AND MIGUEL A. ALONSO},
editor = {Optical Society of America },
doi = {https://doi.org/10.1364/OL.44.003809},
year = {2019},
date = {2019-07-02},
urldate = {2019-07-02},
journal = {Optics Letters},
volume = {44},
number = {15},
pages = {3809-3812},
abstract = {We present an approach for the study and design of reflectors with rotational or translational symmetry that redirect light from a point source into any desired radiant intensity distribution. This method is based on a simple conformal map that transforms the reflector’s shape into a curve that describes light’s direction after reflection. Both segmented reflectors and continuous reflectors are discussed, illustrating how certain reflector characteristics become apparent under this transformation. This method can also be used to study extended sources via translations.},
keywords = {design, related},
pubstate = {published},
tppubtype = {article}
}
We present an approach for the study and design of reflectors with rotational or translational symmetry that redirect light from a point source into any desired radiant intensity distribution. This method is based on a simple conformal map that transforms the reflector’s shape into a curve that describes light’s direction after reflection. Both segmented reflectors and continuous reflectors are discussed, illustrating how certain reflector characteristics become apparent under this transformation. This method can also be used to study extended sources via translations.
Liu, Y.; Bauer, A.; Rolland, J. P.
CubeSat Format 3-Mirror Spectrometer Designed with Freeform Surfaces Conference
OSA Technical Digest, no. FM4B.3, 2019.
Abstract | Links | BibTeX | Tags: CeFO, design
@conference{Yux_ff_2019,
title = {CubeSat Format 3-Mirror Spectrometer Designed with Freeform Surfaces},
author = {Y. Liu and A. Bauer and J. P. Rolland},
url = {https://doi.org/10.1364/FREEFORM.2019.FM4B.3},
year = {2019},
date = {2019-06-14},
booktitle = {OSA Technical Digest},
number = {FM4B.3},
abstract = {A design study about a 3-mirror freeform spectrometer that fits in a 1U CubeSat format. Performances are compared between the freeform and off-axis asphere designs.},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {conference}
}
A design study about a 3-mirror freeform spectrometer that fits in a 1U CubeSat format. Performances are compared between the freeform and off-axis asphere designs.
2018
Schiesser, Eric M.; Bahk, Seung-Whan; Bromage, Jake; Rolland, Jannick P.
Gaussian curvature and stigmatic imaging relations for the design of an unobscured reflective relay Journal Article
In: Optics Letters, no. 20, pp. 4855-4858, 2018.
Abstract | Links | BibTeX | Tags: CeFO related, design
@article{Schiesser2018,
title = {Gaussian curvature and stigmatic imaging relations for the design of an unobscured reflective relay},
author = {Eric M. Schiesser and Seung-Whan Bahk and Jake Bromage and Jannick P. Rolland},
url = {https://doi.org/10.1364/OL.43.004855},
doi = {10.1364/OL.43.004855},
year = {2018},
date = {2018-10-03},
journal = {Optics Letters},
number = {20},
pages = {4855-4858},
abstract = {We derive the relationship between Coddington's equations and the Gaussian curvature for a stigmatic reflective imaging system. This relationship allows parameterizing off-axis conic optical systems using traditional first-order optics by considering the effective curvature at the center of the off-axis sections. Specifically, we demonstrate parameterizing the system requirements of a 2{texttimes} achromatic image relay for a terawatt laser system. This system required both collimation (far-field) and pupil imaging (near-field) simultaneously. Long working distances and specific spatial constraints limited the available layout options for the imaging components. By parameterizing these system requirements and packaging constraints, the final specifications could be quickly iterated, while allowing for flexibility in the layout of the system during a multi-year conceptual period.},
keywords = {CeFO related, design},
pubstate = {published},
tppubtype = {article}
}
We derive the relationship between Coddington's equations and the Gaussian curvature for a stigmatic reflective imaging system. This relationship allows parameterizing off-axis conic optical systems using traditional first-order optics by considering the effective curvature at the center of the off-axis sections. Specifically, we demonstrate parameterizing the system requirements of a 2{texttimes} achromatic image relay for a terawatt laser system. This system required both collimation (far-field) and pupil imaging (near-field) simultaneously. Long working distances and specific spatial constraints limited the available layout options for the imaging components. By parameterizing these system requirements and packaging constraints, the final specifications could be quickly iterated, while allowing for flexibility in the layout of the system during a multi-year conceptual period.
Papa, Jonathan C.; Howard, J.; Rolland, J. P.
Starting point designs for freeform four-mirror systems Journal Article
In: Optical Engineering, vol. 57, no. 10, pp. 101705, 2018.
Abstract | Links | BibTeX | Tags: CeFO related, design
@article{Papa_IODC2017,
title = {Starting point designs for freeform four-mirror systems},
author = {Jonathan C. Papa and J. Howard and J. P. Rolland},
url = {https://doi.org/10.1117/1.OE.57.10.101705},
doi = {10.1117/1.OE.57.10.101705},
year = {2018},
date = {2018-06-21},
journal = {Optical Engineering},
volume = {57},
number = {10},
pages = {101705},
abstract = {Driven by the development of freeform four-mirror solutions, we review and compare analytical methods to generate starting point designs with various states of correction, surface types, symmetry, and obscuration. The advantages and disadvantages of each are examined. We have combined several concepts and techniques from the literature to analytically generate unobscured freeform starting point designs that are corrected through the third-order image degrading aberrations. The surfaces in these starting point designs are described as base off-axis conics that image stigmatically for the central field point, also known as Cartesian reflectors, with an aspheric departure “cap” (quartic with the aperture) added to the Cartesian reflectors. Tilt angles are chosen to cancel field-asymmetric field-linear astigmatism and unobscure the system. Paraxial data from an equivalent on-axis system are used to solve a system of linear equations to determine the magnitude of the aspheric departure “caps” that are placed on top of the base Cartesian reflectors, in order to eliminate the remaining third-order image degrading aberrations. In this approach, each aspheric departure “cap” is centered about the intersection of the optical-axis-ray, also known as the base ray, with the base surface, rather than being centered about the axis of rotational invariance.},
keywords = {CeFO related, design},
pubstate = {published},
tppubtype = {article}
}
Driven by the development of freeform four-mirror solutions, we review and compare analytical methods to generate starting point designs with various states of correction, surface types, symmetry, and obscuration. The advantages and disadvantages of each are examined. We have combined several concepts and techniques from the literature to analytically generate unobscured freeform starting point designs that are corrected through the third-order image degrading aberrations. The surfaces in these starting point designs are described as base off-axis conics that image stigmatically for the central field point, also known as Cartesian reflectors, with an aspheric departure “cap” (quartic with the aperture) added to the Cartesian reflectors. Tilt angles are chosen to cancel field-asymmetric field-linear astigmatism and unobscure the system. Paraxial data from an equivalent on-axis system are used to solve a system of linear equations to determine the magnitude of the aspheric departure “caps” that are placed on top of the base Cartesian reflectors, in order to eliminate the remaining third-order image degrading aberrations. In this approach, each aspheric departure “cap” is centered about the intersection of the optical-axis-ray, also known as the base ray, with the base surface, rather than being centered about the axis of rotational invariance.
Rolland, J. P.
Engineering the ultimate augmented reality display: Paths towards a digital window into the world Miscellaneous
2018.
Links | BibTeX | Tags: design, related
@misc{RollandLFW,
title = {Engineering the ultimate augmented reality display: Paths towards a digital window into the world},
author = {J. P. Rolland},
url = {http://digital.laserfocusworld.com/laserfocusworld/201806/MobilePagedArticle.action?articleId=1404125#articleId1404125},
year = {2018},
date = {2018-06-20},
issuetitle = {Laser Focus World},
volume = {June 2018},
pages = {31-34},
keywords = {design, related},
pubstate = {published},
tppubtype = {misc}
}
Bauer, A.; Schiesser, Eric M.; Rolland, Jannick P.
Starting geometry creation and design method for freeform optics Journal Article
In: Nature Communications, vol. 9, no. 1756, 2018.
Abstract | Links | BibTeX | Tags: CeFO, design
@article{Bauer2018,
title = {Starting geometry creation and design method for freeform optics},
author = {A. Bauer and Eric M. Schiesser and Jannick P. Rolland},
url = {https://www.nature.com/articles/s41467-018-04186-9},
doi = {10.1038/s41467-018-04186-9},
year = {2018},
date = {2018-05-01},
journal = {Nature Communications},
volume = {9},
number = {1756},
abstract = {We describe a method for designing freeform optics based on the aberration theory of freeform surfaces that guides the development of a taxonomy of starting-point geometries with an emphasis on manufacturability. An unconventional approach to the optimization of these starting designs wherein the rotationally invariant 3rd-order aberrations are left uncorrected prior to unobscuring the system is shown to be effective. The optimal starting-point geometry is created for an F/3, 200 mm aperture-class three-mirror imager and is fully optimized using a novel step-by-step method over a 4 × 4 degree field-of-view to exemplify the design method. We then optimize an alternative starting-point geometry that is common in the literature but was quantified here as a sub-optimal candidate for optimization with freeform surfaces. A comparison of the optimized geometries shows the performance of the optimal geometry is at least 16× better, which underscores the importance of the geometry when designing freeform optics.},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {article}
}
We describe a method for designing freeform optics based on the aberration theory of freeform surfaces that guides the development of a taxonomy of starting-point geometries with an emphasis on manufacturability. An unconventional approach to the optimization of these starting designs wherein the rotationally invariant 3rd-order aberrations are left uncorrected prior to unobscuring the system is shown to be effective. The optimal starting-point geometry is created for an F/3, 200 mm aperture-class three-mirror imager and is fully optimized using a novel step-by-step method over a 4 × 4 degree field-of-view to exemplify the design method. We then optimize an alternative starting-point geometry that is common in the literature but was quantified here as a sub-optimal candidate for optimization with freeform surfaces. A comparison of the optimized geometries shows the performance of the optimal geometry is at least 16× better, which underscores the importance of the geometry when designing freeform optics.
2017
Rolland, J. P.; Bauer, A.
Optiques du futur: une nouvelle ère pour la conception optique Conference
Optiques du futur, 2017.
Links | BibTeX | Tags: CeFO, design
@conference{Rolland_france2017,
title = {Optiques du futur: une nouvelle ère pour la conception optique},
author = {J.P. Rolland and A. Bauer},
url = {http://www.sfoptique.org/agenda/evenements-organises-par-l-association/optiques-du-futur.html},
year = {2017},
date = {2017-12-13},
booktitle = {Optiques du futur},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {conference}
}
Liang, Kevin; Alonso, Miguel A.
Effects of defocus and other quadratic errors on OTF Journal Article Forthcoming
In: Optics Letters, vol. 42, no. 24, pp. 5254-5257, Forthcoming.
Abstract | Links | BibTeX | Tags: aberrations, CeFO, design, imaging
@article{AlonsoLiangOL17,
title = {Effects of defocus and other quadratic errors on OTF},
author = {Kevin Liang and Miguel A. Alonso},
url = {https://www.osapublishing.org/ol/upcoming.cfm},
year = {2017},
date = {2017-12-12},
journal = {Optics Letters},
volume = {42},
number = {24},
pages = {5254-5257},
abstract = {Even for the simplest nontrivial aberration, defocus, and for a circular pupil, there is no theoretical closed-form expression for the optical transfer function (OTF). By using a simple approximation for the error at the pupil, we provide a simple yet accurate approximation for the OTF of a defocused system. We then generalize this approach to generic quadratic aberrations, including astigmatism.},
keywords = {aberrations, CeFO, design, imaging},
pubstate = {forthcoming},
tppubtype = {article}
}
Even for the simplest nontrivial aberration, defocus, and for a circular pupil, there is no theoretical closed-form expression for the optical transfer function (OTF). By using a simple approximation for the error at the pupil, we provide a simple yet accurate approximation for the OTF of a defocused system. We then generalize this approach to generic quadratic aberrations, including astigmatism.
Papa, J.; Howard, J. M.; Rolland, J. P.
Four-Mirror Freeform Design Conference
Mirror Tech/SBIR/STTR Workshop 2017, 2017.
Links | BibTeX | Tags: CeFO related, design, related
@conference{Papa_nasa,
title = {Four-Mirror Freeform Design},
author = {J. Papa and J. M. Howard and J. P. Rolland},
url = {https://spie.org/Documents/ConferencesExhibitions/Tech-Days-2017-Presentations-DRAFT.pdf},
year = {2017},
date = {2017-11-15},
booktitle = {Mirror Tech/SBIR/STTR Workshop 2017},
keywords = {CeFO related, design, related},
pubstate = {published},
tppubtype = {conference}
}
Bauer, A.; Schiesser, E. M.; Rolland, J. P.
Mirror Technology SBIR/STTR Workshop, 2017.
Links | BibTeX | Tags: CeFO, design
@conference{Bauer_nasa,
title = {Analyzing Aberration Fields of Three-mirror Telescope and Correcting them Using Freeform Zernike Surfaces},
author = {A. Bauer and E. M. Schiesser and J. P. Rolland},
url = {https://spie.org/Documents/ConferencesExhibitions/Tech-Days-2017-Presentations-DRAFT.pdf},
year = {2017},
date = {2017-11-15},
booktitle = {Mirror Technology SBIR/STTR Workshop},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {conference}
}
Rolland, J. P.; Bauer, A.
How Freeform Optics Induced Optical Aberrations Matter Conference
Proceedings of Frontiers in Optics 2017, Optical Society of America, 2017, ISBN: 978-1-943580-33-0.
Links | BibTeX | Tags: CeFO, design
@conference{RollandFIO17,
title = {How Freeform Optics Induced Optical Aberrations Matter},
author = {J. P. Rolland and A. Bauer},
url = {https://doi.org/10.1364/FIO.2017.FTh3D.1},
doi = {10.1364/FIO.2017.FTh3D.1},
isbn = {978-1-943580-33-0},
year = {2017},
date = {2017-09-21},
booktitle = {Proceedings of Frontiers in Optics 2017},
publisher = {Optical Society of America},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {conference}
}
Rolland, J. P.
Freeform Optics Conference
Light and Sound Interactive 2017, 2017.
Links | BibTeX | Tags: CeFO, design
@conference{RollandLSI17,
title = {Freeform Optics},
author = {J. P. Rolland},
url = {http://www.lightandsound.org/wp-content/uploads/2017/09/LSI-2017-Final-Program.pdf},
year = {2017},
date = {2017-09-13},
booktitle = {Light and Sound Interactive 2017},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {conference}
}
Reimers, J. P.; Bauer, A.; Thompson, K. P.; Rolland, J. P.
Freeform spectrometer enabling increased compactness Journal Article
In: Light: Science and Applications, vol. 6, no. e17026, 2017.
Abstract | Links | BibTeX | Tags: CeFO, design
@article{Reimers2017,
title = {Freeform spectrometer enabling increased compactness},
author = {J. P. Reimers and A. Bauer and K. P. Thompson and J. P. Rolland},
url = {https://www.nature.com/articles/lsa201726},
doi = {10.1038/lsa.2017.26},
year = {2017},
date = {2017-07-28},
journal = {Light: Science and Applications},
volume = {6},
number = {e17026},
abstract = {We present optical designs with freeform optics in the context of hyperspectral imaging. Results show designs that are 5 × more compact in volume than similar designs using conventional spherical or aspherical surfaces. We will show how combining the concepts of spatial and spectral-band broadening, which will be introduced in this paper, led to the improvement in compactness that is uniquely enabled by freeform optics.},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {article}
}
We present optical designs with freeform optics in the context of hyperspectral imaging. Results show designs that are 5 × more compact in volume than similar designs using conventional spherical or aspherical surfaces. We will show how combining the concepts of spatial and spectral-band broadening, which will be introduced in this paper, led to the improvement in compactness that is uniquely enabled by freeform optics.
Liang, Kevin; Alonso, Miguel A.
Understanding the effects of groove structures on the MTF Journal Article
In: Optics Express, vol. 25, no. 16, pp. 18827-18841, 2017.
Abstract | Links | BibTeX | Tags: CeFO, design
@article{Alonso17,
title = {Understanding the effects of groove structures on the MTF},
author = {Kevin Liang and Miguel A. Alonso},
url = {https://doi.org/10.1364/OE.25.018827},
doi = {https://doi.org/10.1364/OE.25.018827},
year = {2017},
date = {2017-07-25},
journal = {Optics Express},
volume = {25},
number = {16},
pages = {18827-18841},
abstract = {We develop a theory for understanding and modeling the effects of mid-spatial frequency (MSF) structures on the modulation transfer function (MTF) of an imaging system. We show that the MTF is related through Fourier transformation to what we call the pupil-difference probability density (PDPD) function. This relation is illustrated for several one-dimensional periodic groove patterns. We also consider two-dimensional pupils, particularly those presenting straight and circular concentric periodic surface errors, similar to those resulting from diamond turning and milling processes of freeform optical manufacturing, and develop simple approximations for the MTF based on the PDPD. Our approach provides an analytic way to understand the effects of tool profiles, as well as other freeform manufacturing parameters.},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {article}
}
We develop a theory for understanding and modeling the effects of mid-spatial frequency (MSF) structures on the modulation transfer function (MTF) of an imaging system. We show that the MTF is related through Fourier transformation to what we call the pupil-difference probability density (PDPD) function. This relation is illustrated for several one-dimensional periodic groove patterns. We also consider two-dimensional pupils, particularly those presenting straight and circular concentric periodic surface errors, similar to those resulting from diamond turning and milling processes of freeform optical manufacturing, and develop simple approximations for the MTF based on the PDPD. Our approach provides an analytic way to understand the effects of tool profiles, as well as other freeform manufacturing parameters.
Hayes, A. B.; Zhou, W.; Bauer, A. M.; Owen, J. D.; Evans, C. J.; Davies, M. A.; Rolland, J. P.
Software Tools to Simplify the Transfer of a Lens Design to Manufacturing Conference
Proceedings of the International Optical Design Conference, no. JTh2B.2, SPIE SPIE, 2017.
Abstract | Links | BibTeX | Tags: CeFO, design, fabrication, manufacturing
@conference{hayes17a,
title = {Software Tools to Simplify the Transfer of a Lens Design to Manufacturing},
author = {A.B. Hayes and W. Zhou and A.M. Bauer and J.D. Owen and C.J. Evans and M.A. Davies and J.P. Rolland},
url = {https://www.osapublishing.org/abstract.cfm?uri=iodc-2017-JTh2B.2&origin=search},
year = {2017},
date = {2017-07-13},
booktitle = {Proceedings of the International Optical Design Conference},
number = {JTh2B.2},
publisher = {SPIE},
organization = {SPIE},
abstract = {Software tools for freeform surface fabrication are currently being developed. Major functions of the software include generating an ISO-standard fabrication document with part drawings and sag tables, producing CNC machine code for selected manufacturing machines, and representations such as slopes and full-field displays for evaluating the manufacturability of surfaces. These tools simplify the transition from design to manufacturing, increasing speed, simplicity and accuracy.
},
keywords = {CeFO, design, fabrication, manufacturing},
pubstate = {published},
tppubtype = {conference}
}
Software tools for freeform surface fabrication are currently being developed. Major functions of the software include generating an ISO-standard fabrication document with part drawings and sag tables, producing CNC machine code for selected manufacturing machines, and representations such as slopes and full-field displays for evaluating the manufacturability of surfaces. These tools simplify the transition from design to manufacturing, increasing speed, simplicity and accuracy.
Reimers, J. P.; Thompson, K. P.; Troutman, J. R.; Owen, J. D.; Bauer, A.; Papa, J.; Whiteaker, K. L.; Yates, D.; Farsad, M.; Marasco, P.; Davies, M. A.; Rolland, J. P.
Increased Compactness of an Imaging Spectrometer Enabled by Freeform Surfaces Conference
Proceedings of the International Optical Design Conference 2017, Optical Society of America, 2017, ISBN: 978-1-943580-31-6.
Links | BibTeX | Tags: CeFO, design
@conference{ReimersIODC17,
title = {Increased Compactness of an Imaging Spectrometer Enabled by Freeform Surfaces},
author = {J. P. Reimers and K. P. Thompson and J. R. Troutman and J. D. Owen and A. Bauer and J. Papa and K. L. Whiteaker and D. Yates and M. Farsad and P. Marasco and M. A. Davies and J. P. Rolland},
url = {https://doi.org/10.1364/FREEFORM.2017.JW2C.5},
doi = {10.1364/FREEFORM.2017.JW2C.5},
isbn = {978-1-943580-31-6},
year = {2017},
date = {2017-07-13},
booktitle = {Proceedings of the International Optical Design Conference 2017},
publisher = {Optical Society of America},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {conference}
}
Shultz, J. A.; Suleski, T. J.
Design of a Variable Toric Lens Using Laterally Shifted Freeform Elements Conference
Freeform 2017 (Freeform, IODC, OFT), Optical Society of America, 2017.
Abstract | Links | BibTeX | Tags: design, related
@conference{Suleski17_2,
title = {Design of a Variable Toric Lens Using Laterally Shifted Freeform Elements},
author = {J. A. Shultz and T. J. Suleski },
doi = {https://doi.org/10.1364/FREEFORM.2017.JW2C.2},
year = {2017},
date = {2017-07-13},
urldate = {2017-07-13},
booktitle = {Freeform 2017 (Freeform, IODC, OFT)},
publisher = {Optical Society of America},
abstract = {We present a design process for a variable lens pair where the x and y focal lengths are varied independently of each other using laterally shifted freeform surfaces. Examples are presented.},
keywords = {design, related},
pubstate = {published},
tppubtype = {conference}
}
We present a design process for a variable lens pair where the x and y focal lengths are varied independently of each other using laterally shifted freeform surfaces. Examples are presented.
Papa, J.; Howard, J. M.; Rolland, J. P.
Starting Point Designs for Freeform Four-Mirror Systems Conference
Proceedings of the International Optical Design Conference 2017, Optical Society of America, 2017, ISBN: 978-1-943580-31-6.
Abstract | Links | BibTeX | Tags: design, related
@conference{PapaIODC17,
title = {Starting Point Designs for Freeform Four-Mirror Systems},
author = {J. Papa and J. M. Howard and J. P. Rolland},
url = {https://doi.org/10.1364/IODC.2017.ITu2A.4},
doi = {10.1364/IODC.2017.ITu2A.4},
isbn = {978-1-943580-31-6},
year = {2017},
date = {2017-07-13},
urldate = {2017-07-13},
booktitle = {Proceedings of the International Optical Design Conference 2017},
publisher = {Optical Society of America},
abstract = {Driven by the development of freeform four-mirror solutions, we compare analytical methods to generate starting point designs with various states of correction, surface types, symmetry, and obscuration. The advantages and disadvantages of each are examined.},
keywords = {design, related},
pubstate = {published},
tppubtype = {conference}
}
Driven by the development of freeform four-mirror solutions, we compare analytical methods to generate starting point designs with various states of correction, surface types, symmetry, and obscuration. The advantages and disadvantages of each are examined.
Takaki, N.; Rolland, J. P.
Mathematical Properties of Describing Freeform Optical Surfaces with Orthogonal Bases Conference
Proceedings of International Optical Design Conference 2017, Optical Society of America, 2017, ISBN: 978-1-943580-31-6.
Links | BibTeX | Tags: CeFO, design
@conference{TakakiIODC17,
title = {Mathematical Properties of Describing Freeform Optical Surfaces with Orthogonal Bases},
author = {N. Takaki and J. P. Rolland},
url = {https://doi.org/10.1364/FREEFORM.2017.JW1B.1},
doi = {10.1364/FREEFORM.2017.JW1B.1},
isbn = {978-1-943580-31-6},
year = {2017},
date = {2017-07-13},
booktitle = {Proceedings of International Optical Design Conference 2017},
publisher = {Optical Society of America},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {conference}
}
Bauer, A.; Schiesser, E. M.; Rolland, J. P.
Proceedings of Freeform Optics 2017, Optical Society of America, 2017, ISBN: 978-1-943580-31-6.
Links | BibTeX | Tags: CeFO, design
@conference{BauerFF2017,
title = {Analyzing the Aberration Fields of a Three-mirror Telescope and Correcting them Using Freeform Zernike Surfaces},
author = {A. Bauer and E. M. Schiesser and J. P. Rolland},
url = {https://doi.org/10.1364/FREEFORM.2017.JW3C.4},
doi = {10.1364/FREEFORM.2017.JW3C.4},
isbn = {978-1-943580-31-6},
year = {2017},
date = {2017-07-13},
booktitle = {Proceedings of Freeform Optics 2017},
publisher = {Optical Society of America},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {conference}
}
Aryan, H.; Evans, C. J.; Suleski, T. J.
On the Use of ISO 10110-8 for Specification of Optical Surfaces with Mid-Spatial Frequency Errors Conference
Optical Design and Fabrication 2017 (Freeform, IODC, OFT), Optical Society of America, 2017.
Links | BibTeX | Tags: CeFO, design, manufacturing, test, testing
@conference{Suleski17_3,
title = {On the Use of ISO 10110-8 for Specification of Optical Surfaces with Mid-Spatial Frequency Errors},
author = {H. Aryan and C. J. Evans and T. J. Suleski},
url = {https://doi.org/10.1364/OFT.2017.OM2B.3},
doi = {10.1364/OFT.2017.OM2B.3},
year = {2017},
date = {2017-07-12},
booktitle = {Optical Design and Fabrication 2017 (Freeform, IODC, OFT)},
publisher = {Optical Society of America},
keywords = {CeFO, design, manufacturing, test, testing},
pubstate = {published},
tppubtype = {conference}
}
Liang, Kevin; Alonso, Miguel A.
MTF as the Fourier Transform of a Pupil-Difference Probability Density Presentation
26.06.2017, ISBN: 978-1-943580-29-3, (Mathematics in Imaging 2017).
Abstract | Links | BibTeX | Tags: CeFO, design
@misc{Alonso17b,
title = {MTF as the Fourier Transform of a Pupil-Difference Probability Density},
author = {Kevin Liang and Miguel A. Alonso},
editor = {Optical Society of America},
url = {https://doi.org/10.1364/MATH.2017.MTu3C.2},
doi = {https://doi.org/10.1364/MATH.2017.MTu3C.2},
isbn = {978-1-943580-29-3},
year = {2017},
date = {2017-06-26},
booktitle = {Imaging and Applied Optics 2017},
abstract = {We develop the theory for calculating the effects of mid-spatial frequency (MSF) structures on MTF through the Fourier transform of a pupil-difference probability density (PDPD) function. Its implementation is shown for several periodic groove patterns.},
note = {Mathematics in Imaging 2017},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {presentation}
}
We develop the theory for calculating the effects of mid-spatial frequency (MSF) structures on MTF through the Fourier transform of a pupil-difference probability density (PDPD) function. Its implementation is shown for several periodic groove patterns.
HIPPOLYTE DOURDENT ANTHONY VELLA, LUKAS NOVOTNY; ALONSO, MIGUEL A.
Birefringent masks that are optimal for generating bottle fields Journal Article
In: Optics Express, vol. 25, no. 8, pp. 9318-9332, 2017.
Abstract | Links | BibTeX | Tags: design, related
@article{AlonsoVella2017,
title = {Birefringent masks that are optimal for generating bottle fields},
author = {ANTHONY VELLA, HIPPOLYTE DOURDENT, LUKAS NOVOTNY, AND MIGUEL A. ALONSO},
editor = {OSA},
doi = {https://doi.org/10.1364/OE.25.009318},
year = {2017},
date = {2017-04-17},
journal = {Optics Express},
volume = {25},
number = {8},
pages = {9318-9332},
abstract = {An optical bottle field containing a three-dimensional intensity null at the focal point can be generated by placing a spatially inhomogeneous birefringent mask at the pupil of an aplanatic high-NA focusing system. We derive the optimal birefringence distribution for which a uniformly polarized input beam is converted into a bottle field with the sharpest possible null in intensity. We show that a stress engineered optical (SEO) window, which has a radially varying retardance, followed by a half-wave plate, performs nearly as well as the optimal solution. Experimental results corroborate that an SEO element can be used to generate a bottle field.},
keywords = {design, related},
pubstate = {published},
tppubtype = {article}
}
An optical bottle field containing a three-dimensional intensity null at the focal point can be generated by placing a spatially inhomogeneous birefringent mask at the pupil of an aplanatic high-NA focusing system. We derive the optimal birefringence distribution for which a uniformly polarized input beam is converted into a bottle field with the sharpest possible null in intensity. We show that a stress engineered optical (SEO) window, which has a radially varying retardance, followed by a half-wave plate, performs nearly as well as the optimal solution. Experimental results corroborate that an SEO element can be used to generate a bottle field.
Shultz, J. A.; Aryan, H.; Owen, J. D.; Davies, M. A.; Suleski, T. J.
Impacts of sub-aperture manufacturing techniques on the performance of freeform optics Conference
Proceedings ASPE/ASPEN Spring Topical Meeting: Manufacture and Metrology of Structured and Freeform Surfaces for Functional Applications, ASPE/ASPEN, 2017.
Links | BibTeX | Tags: CeFO, design, manufacturing, testing
@conference{Suleski17_5,
title = {Impacts of sub-aperture manufacturing techniques on the performance of freeform optics},
author = {J. A. Shultz and H. Aryan and J. D. Owen and M. A. Davies and T. J. Suleski},
url = {http://www.aspen-aspe2017-topical.com/index.php},
year = {2017},
date = {2017-03-16},
booktitle = {Proceedings ASPE/ASPEN Spring Topical Meeting: Manufacture and Metrology of Structured and Freeform Surfaces for Functional Applications},
publisher = {ASPE/ASPEN},
keywords = {CeFO, design, manufacturing, testing},
pubstate = {published},
tppubtype = {conference}
}
2016
Schiesser, Eric M.; Papa, Jonathan C.; Thompson, Kevin P.; Rolland, Jannick P.
Comparing Three-Mirror Freeform Telescopes to Traditional TMAs by Exploring TMA Solution Space Proceedings
Frontiers in Optics, Optical Society of America, Rochester, New York United States, vol. 2016, no. FW5H.3, 2016, ISBN: 978-1-943580-19-4.
Abstract | Links | BibTeX | Tags: CeFO, design
@proceedings{SchiesserFiO2016,
title = {Comparing Three-Mirror Freeform Telescopes to Traditional TMAs by Exploring TMA Solution Space},
author = {Eric M. Schiesser and Jonathan C. Papa and Kevin P. Thompson and Jannick P. Rolland},
url = {http://www.osapublishing.org/abstract.cfm?URI=FiO-2016-FW5H.3},
doi = {10.1364/FIO.2016.FW5H.3},
isbn = {978-1-943580-19-4},
year = {2016},
date = {2016-10-17},
journal = {Frontiers in Optics 2016},
volume = {2016},
number = {FW5H.3},
publisher = {Frontiers in Optics, Optical Society of America},
address = {Rochester, New York United States},
abstract = {Tilted freeform mirrors allow the removal of obscuration in otherwise 100% obscured coaxial designs. We explore the design space for three mirror freeform telescopes by reviewing the coaxial single-conic TMA space, including convex primary solutions.},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {proceedings}
}
Tilted freeform mirrors allow the removal of obscuration in otherwise 100% obscured coaxial designs. We explore the design space for three mirror freeform telescopes by reviewing the coaxial single-conic TMA space, including convex primary solutions.
Rolland, J. P.
Advances in Freeform Optics Presentation
30.09.2016.
Abstract | BibTeX | Tags: assembly, CeFO, design, fabrication, testing
@misc{Rolland2016a,
title = {Advances in Freeform Optics},
author = {Rolland, J. P.},
year = {2016},
date = {2016-10-00},
abstract = {Keynote Presentation only. Photonics Asia and COS, 12-15 October 2016, Beijing China},
keywords = {assembly, CeFO, design, fabrication, testing},
pubstate = {published},
tppubtype = {presentation}
}
Keynote Presentation only. Photonics Asia and COS, 12-15 October 2016, Beijing China
Schiesser, Eric M.; Rolland, J. P.
Sensitivity analysis comparison of unobscured TMA: freeform vs. co-axial Conference
2016, (Mirror Tech Days ).
@conference{Schiesser2016b,
title = {Sensitivity analysis comparison of unobscured TMA: freeform vs. co-axial},
author = {Eric M. Schiesser and J.P. Rolland},
year = {2016},
date = {2016-04-01},
note = {Mirror Tech Days },
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {conference}
}
Bauer, A.; Rolland, J. P.; Thompson, K. P.
Ray-based optical design tool for freeform optics: coma full-field display Journal Article
In: Opt. Express, vol. 24, no. 1, pp. 459-472, 2016.
@article{BAUER16a,
title = {Ray-based optical design tool for freeform optics: coma full-field display},
author = {Bauer, A. and J. P. Rolland and K. P. Thompson},
year = {2016},
date = {2016-01-07},
journal = {Opt. Express},
volume = {24},
number = {1},
pages = {459-472},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {article}
}
Papa, J.; Rolland, J. P.; Howard, J.
Starting Points for Designing Freeform Four-Mirror Telescopes Conference
2016.
BibTeX | Tags: design, related
@conference{Papa2016a,
title = {Starting Points for Designing Freeform Four-Mirror Telescopes},
author = {Papa, J. and J.P. Rolland and J. Howard },
year = {2016},
date = {2016-00-00},
keywords = {design, related},
pubstate = {published},
tppubtype = {conference}
}
2015
Kitt, A.; Rolland, J. P.; Vamivakas, A. N.
Visible metasurfaces and ruled diffraction gratings: a comparison Journal Article
In: Opt. Express, vol. 5, no. 12, pp. 2895-2901, 2015.
Abstract | Links | BibTeX | Tags: design, related
@article{Kitt15,
title = {Visible metasurfaces and ruled diffraction gratings: a comparison},
author = {Kitt, A. and J. P. Rolland and A. N. Vamivakas},
doi = {https://doi.org/10.1364/OME.5.002895},
year = {2015},
date = {2015-11-23},
urldate = {2015-11-23},
journal = {Opt. Express},
volume = {5},
number = {12},
pages = {2895-2901},
abstract = {Metasurface based and physical ruling based diffraction gratings function by controlling the phase of light, but the origin of the phase control is different. Here we compare the simulated optical response of a 1800 lines/mm ruled diffraction grating blazed for 650 nm light to the response of a 1800 lines/mm phase grating meta-surface designed for efficiency in the visible. The efficiencies are comparable; the transverse electric polarized efficiency of the meta-surface based grating is similar to the transverse magnetic polarized efficiency of the ruled-grating. However, due to the different mechanisms of phase accrual, the meta-surface based grating does not exhibit grating anomalies and has low efficiency for transverse magnetic polarized light.},
keywords = {design, related},
pubstate = {published},
tppubtype = {article}
}
Metasurface based and physical ruling based diffraction gratings function by controlling the phase of light, but the origin of the phase control is different. Here we compare the simulated optical response of a 1800 lines/mm ruled diffraction grating blazed for 650 nm light to the response of a 1800 lines/mm phase grating meta-surface designed for efficiency in the visible. The efficiencies are comparable; the transverse electric polarized efficiency of the meta-surface based grating is similar to the transverse magnetic polarized efficiency of the ruled-grating. However, due to the different mechanisms of phase accrual, the meta-surface based grating does not exhibit grating anomalies and has low efficiency for transverse magnetic polarized light.
Schiesser, Eric M.; Papa, Jonathan C.; Thompson, Kevin P.; Rolland, Jannick P.
Tools for Visualizing the Solution Space for Freeform Three-Mirrors Anastigmats Presentation
10.11.2015, (NASA Mirror/Tech/SBIR/STTR workshop (2015)).
@misc{ShiesserNASA15,
title = {Tools for Visualizing the Solution Space for Freeform Three-Mirrors Anastigmats},
author = {Eric M. Schiesser and Jonathan C. Papa and Kevin P. Thompson and Jannick P. Rolland},
year = {2015},
date = {2015-11-10},
note = {NASA Mirror/Tech/SBIR/STTR workshop (2015)},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {presentation}
}
Gray, R.
2015.
Abstract | Links | BibTeX | Tags: design, related
@phdthesis{GRAY-THESIS,
title = {Investigation of the Field Dependence of the Aberration Functions of Rotationally Nonsymmetric Optical Imaging Systems},
author = {Gray, R.},
url = {https://urresearch.rochester.edu/institutionalPublicationPublicView.action?institutionalItemId=29981&versionNumber=1},
year = {2015},
date = {2015-11-06},
urldate = {2015-11-06},
abstract = {It is shown how Shack’s vector product (SVP) can be used to express the expansion of the monochromatic wavefront aberration function for rotationally symmetric optical imaging models using the H. H. Hopkins’ expansion coefficients. As a result of this research it was discovered that SVP fits naturally within the framework of 2-dimensional Geometric Algebra (GA). It is further shown how SVP can be used to define two-dimensional vectors in terms of the Zernike polynomials. The wavefront aberration function expansion is then expressed in terms of these Zernike vectors. A method for calculating the H. H. Hopkins’ expansion coefficients is described, including the calculation of the per surface, sphere/asphere, intrinsic/extrinsic expansion coefficient contributions. Methods for converting the Zernike expansion coefficients into the H. H. Hopkins’ expansion coefficients have been developed and are presented in this work. Nodal aberration theory (NAT), now well established in the literature, is presented in terms of these mathematical developments. As a quantitative validation of the NAT predications of an optical system’s field dependence, comparisons are made between the full field displays (FFDs) produced by using a double Zernike expansion of the wavefront aberration function and by application of NAT to rotationally symmetric optical imaging systems having one or more surfaces decentered and/or tilted. Validation of these developments is provided using idealized computer models of several space telescopes having one or more optical surfaces decentered and/or tilted. Initial steps toward one approach for extending NAT to include optical imaging systems containing freeform surface shapes defined by Zernike polynomials is also provided.},
keywords = {design, related},
pubstate = {published},
tppubtype = {phdthesis}
}
It is shown how Shack’s vector product (SVP) can be used to express the expansion of the monochromatic wavefront aberration function for rotationally symmetric optical imaging models using the H. H. Hopkins’ expansion coefficients. As a result of this research it was discovered that SVP fits naturally within the framework of 2-dimensional Geometric Algebra (GA). It is further shown how SVP can be used to define two-dimensional vectors in terms of the Zernike polynomials. The wavefront aberration function expansion is then expressed in terms of these Zernike vectors. A method for calculating the H. H. Hopkins’ expansion coefficients is described, including the calculation of the per surface, sphere/asphere, intrinsic/extrinsic expansion coefficient contributions. Methods for converting the Zernike expansion coefficients into the H. H. Hopkins’ expansion coefficients have been developed and are presented in this work. Nodal aberration theory (NAT), now well established in the literature, is presented in terms of these mathematical developments. As a quantitative validation of the NAT predications of an optical system’s field dependence, comparisons are made between the full field displays (FFDs) produced by using a double Zernike expansion of the wavefront aberration function and by application of NAT to rotationally symmetric optical imaging systems having one or more surfaces decentered and/or tilted. Validation of these developments is provided using idealized computer models of several space telescopes having one or more optical surfaces decentered and/or tilted. Initial steps toward one approach for extending NAT to include optical imaging systems containing freeform surface shapes defined by Zernike polynomials is also provided.
Bauer, A.; Rolland, J. P.
Design of a freeform electronic viewfinder coupled to aberration fields of freeform optics Journal Article
In: Optics Express, vol. 23, no. 22, pp. 28141-28153, 2015.
@article{Bauer15,
title = {Design of a freeform electronic viewfinder coupled to aberration fields of freeform optics},
author = {Bauer, A. and J. P. Rolland},
year = {2015},
date = {2015-10-19},
journal = {Optics Express},
volume = {23},
number = {22},
pages = {28141-28153},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {article}
}
Bauer, A.; Thompson, K. P.; Rolland, J. P.
Coma full-field display for freeform imaging systems Conference
Optifab 2015, vol. 9633, no. 963316, Proc. of SPIE, 2015, ( Optifab 2015).
Links | BibTeX | Tags: CeFO, design
@conference{Baueroptifab15,
title = {Coma full-field display for freeform imaging systems},
author = {Bauer, A. and K.P. Thompson and J.P. Rolland},
url = {http://dx.doi.org/10.1117/12.2196061},
doi = {10.1117/12.2196061},
year = {2015},
date = {2015-10-11},
booktitle = {Optifab 2015},
volume = {9633},
number = {963316},
publisher = {Proc. of SPIE},
note = { Optifab 2015},
keywords = {CeFO, design},
pubstate = {published},
tppubtype = {conference}
}