US 11,754,832 B1
Wavefront tester calibration method
Pengfei Wu, Bellevue, WA (US); Wei Zhou, Sammamish, WA (US); Wei Wang, Nanjing (CN); and Yongshui Cai, Nanjing (CN)
Assigned to MLOptic Corp., Redmond, WA (US)
Filed by MLOptic Corp, Redmond, WA (US)
Filed on Mar. 20, 2023, as Appl. No. 18/123,773.
Int. Cl. G02B 27/00 (2006.01); G02B 27/64 (2006.01); G02B 27/10 (2006.01); G02B 27/09 (2006.01)
CPC G02B 27/0068 (2013.01) [G02B 27/0988 (2013.01); G02B 27/1066 (2013.01); G02B 27/64 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A wavefront calibration method for a wavefront tester of one of a lens and an optical system under test, said method comprising:
(a) measuring an air wavefront of the wavefront tester without the lens or the optical system under test;
(b) measuring a sample wavefront to generate an actual wedge angle and refractive index of said sample based on said air wavefront;
(c) calculating a measured wedge angle and refractive index based on the actual wedge angle and refractive index of said sample; and
(d) linear fitting between said actual wedge angle and refractive index and said measured wedge angle and refractive index to produce an actual magnification of said sample.