| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple and inexpensive lens barrel structure in which the tilt of a lens group can be adjusted. SOLUTION: By forming a plurality of positioning grooves on a lens abutting surface and installing an adjusting washer having two lens abutting parts projecting to an outside diameter side and one positioning part on an circumference in order to optionally position the lens abutting surface, the tilt in an optional direction is made correctable. COPYRIGHT: (C)2004,JPO
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