| 摘要 |
PROBLEM TO BE SOLVED: To obtain the positional accuracy of a lens when the lens is arranged in a holding mechanism.SOLUTION: An abutting surface part 5 is disposed on a lens barrel for holding a second lens L2, and three projection parts 4A, 4B and 4C are disposed on a flat pressing section 7 that does not contribute to imaging of the second lens L2 to be decentered. Two 4A and 4B of the projection parts 4A, 4B and 4C are together high, and only 4C is low. The lens is arranged in the lens barrel, the positional relationship between the projections and the abutting surface part is uniquely determined by abutting the projection parts 4A, 4B and 4C on the abutting surface part 5, and the position of the second lens L2 in the optical axis direction is determined by the projection parts. |
