| 摘要 |
PROBLEM TO BE SOLVED: To adjust a position without tilting a lens frame by constituting so as to apply force to the lens frame on two points placed on the intersected line between a plane parallel to a prescribed direction and containing the nearly centroid of the lens frame and a plane vertical to the prescribed direction and containing the nearly centroid of the lens frame. SOLUTION: When the lens frame 200 is adjusted, a Z stage 330 is driven, and an operation lever 310 is moved forward/backward so that the front side projection part 314 of the operation lever 310 is abutted on a front end surface 204a of a slot part 204 to energize this forward. When the operation lever 310 is moved backward, the rear side projection part 316 of the operation lever 310 is abutted on the rear end surface 204b of the slot part 204 to energize this backward. Since the centroid P exists on a line faction of the force applied to the lens frame 200 from the projection parts 314, 316 of the operation lever 310, the moment tilting the lens frame 200 in a vertical plane doesn't occur. |
