The Center for Freeform Optics
An Industry/University Cooperative Research Center

OCT Adapted for Freeform Optical Metrology

Jianing Yao, Alexander Anderson, and Jannick P. Rolland recently published a paper, ‘Point-cloud noncontact metrology of freeform optical surfaces’ in Optics Express 26(8) (2018)









Abstract preview: In this paper, we demonstrate the development of a point-cloud metrology method for the noncontact, high resolution, high precision testing of freeform surfaces. The method leverages swept source optical coherence tomography together with a common-path setup in the sample arm configured to mitigate the axial jitter caused by scanning and environmental perturbations. The lateral x-y scanning field was also rigorously evaluated for the sampling step, linearity, straightness, and orthogonality.

Full Paper Here

Spring 2018