| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens assembly which can be accurately assembled with high efficiency.SOLUTION: A lens assembly includes a lens frame 1 having openings 1a and 1b, and at least two lenses arranged in the lens frame 1. The lens assembly further includes a diaphragm wall 2 which is provided on the end face of the image side opening 1b of the lens frame 1 and exposes only the optical functional surface of a lens 6 which is located on the image side. A stopper 13 is formed in the inner surface of the diaphragm wall 2. When an external vibration is input to the lens assembly, the outer surface of the lens 6 is brought into contact with the stopper 13 before the outer surface of the lens 6 is brought into contact with an edge e of a through hole 2a formed in the diaphragm wall 2, at a position outside the edge e in the radial direction. An elastic member 12 is arranged between the diaphragm wall 2 and the lens 6 at a position radially outside the stopper 13. The height of the surface apex of the elastic member 12 in the optical axis direction from the end face of the edge of the lens 6 is lower than that of the optical functional surface of the lens 6. |
