According to the alignment demand of aspheric mirror with aperture of 230 mm, using the aberrationless surface figure test method, based on the three key processes of experimental research (bonding between the bottom plate and bare mirror; connection of the frame and the bottom plate; calibration of optical center), micro-stress alignment method that could get the minimum variation of the adhesive stress and conduction stress of structure was put forward, and aspheric mirror optical center was calibrated through the optical alignment. Alignment results show that surface shape error of the aspheric mirror with aperture of 230 mm is less than or equal to 0.02, optical center offset is less than or equal to 5 m, the plate was calibrated and the optical axis perpendicularity error is less than or equal to 2.5.
LI Xiao-yan, FU Xing, WANG Peng, DUAN Xue-ting.
Alignment method of aspheric optical reflector. Journal of Applied Optics. 2013, 34(3): 498-502
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