Flexible stitching interferometry for gull-wing asphere using variable-sign curvature compensation
Image stitching
Aperture (computer memory)
DOI:
10.1364/ol.497098
Publication Date:
2023-07-25T15:40:48Z
AUTHORS (6)
ABSTRACT
Aspheres have widespread applications in modern optical systems; however, the high-precision testing of gull-wing asphere (GWA) is still challenging. In this Letter, flexible stitching interferometry (FSI) has been reported using variable-sign curvature compensation (VSCC) to realize accurate GWA testing. The method involves varying sign and magnitude outgoing wavefront by relative translation VSCC compensate for curvatures subapertures, alternating optimization utilized obtain full-aperture absolute phase. feasibility performance proposed are demonstrated experimentally. To our knowledge, such a here first time, could contribute general aspheric interferometry.
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