| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens holding member that stably holds a lens against oscillation or impact relative to a direction perpendicular to a lens optical axis as curbing increase in a space or addition of the number of components.SOLUTION: A lens holding member comprises a first holding part 8 that includes an engagement fitting part 16 moving a non-circular lens L3 to a radial direction orthogonal to a lens optical axis Z, and allows an outer peripheral end Q to insert; a second holding part 9 that includes a lens reception part 91 forming a fixed state regulating the movement of the non-circular lens to the lens optical axis direction in an insertion state, and a protrusion part 92 regulating a movement of the non-circular lens L3 to the radial direction; and a groove part 17 that engages with the protrusion part 92, and defines a movement direction of the second holding part 9 to the lens optical axis direction. The groove part 17 is configured to engage with the protrusion part 92 in the insertion state; guide the protrusion part 92 to the lens optical axis direction; and thereby form the fixed state to be fixed with the first holding part 8 and the second holding part 9 fitted to each other.SELECTED DRAWING: Figure 5 |
