Patent ID: 9347853
Filing Date: 2016-05-24
CPC Classification: G01M

Claim Text:
1. A wavefront aberration measuring method comprising: measuring a wavefront aberration of a test optical system, by causing light, which is emitted from a light source and transmitted through the test optical system, to be incident on a lenslet array; forming a spot image with light from transmitting through at least one lenslet included in the lenslet array; blocking light from being transmitted through at least one other lenslet included in the lenslet array; measuring a position of the spot image; calculating optical paths from positions of a plurality of spot images toward the light source; specifying parameters of the test optical system when light rays from the positions of the plurality of spot images converge at the light source; and calculating a wavefront aberration of the test optical system corresponding to the parameters of the test optical system.