| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical device capable of sufficiently eliminating reflection light. SOLUTION: First, three images are acquired with an image pickup element by rotating a transmission polarization axis by 60°. Then, two images except the image having the highest image level in the three images are selected. After that, images are further acquired by an intermediate transmission polarization axis of the transmission polarization axis 21a of the two images is acquired, and of the images, an image having the largest number of dark pixels is selected. COPYRIGHT: (C)2011,JPO&INPIT |
