Patent ID: 9715077
Date: 2017-07-25
CPC Classifications: G01B,G02B

Claim:
1. A lens aligning device for adjusting a decentering amount of an image capturing lens comprising at least a first lens and a second lens, the first lens and the second lens being arranged, adjacent to each other in this order, between an object and an image surface, said lens aligning device adjusting the image capturing lens by moving at least one of the first lens and the second lens, said lens aligning device comprising: a CNC (Computerized Numerical Control) image measurement system or a mechanism configured to carry out a reflective decentering measurement for measuring a first lens decentering amount which is a decentering amount of a first lens image side surface of the first lens with respect to a first lens object side surface of the first lens, the first lens object side surface being located on an object side, the first lens image side surface being located on an image surface side; a CPU ( central process unit) or a hardware logic configured to calculate a target inter-lens decentering amount which is twice as much as the first lens decentering amount and by which a second lens object side surface of the second lens located on the object is shifted (i) with respect to the first lens image side surface and (ii) in a direction opposite a direction in which the first lens image side surface is decentered with respect to the first lens object side surface; and a manipulator mechanism configured to move at least one of the first lens and the second lens so that an inter-lens decentering amount which is a decentering amount of the second lens object side surface with respect to the first lens image side surface matches the target inter-lens decentering amount.