| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a small and lightweight lens barrel which achieves low cost and high performance by improving rigidity of a holding frame.SOLUTION: The lens barrel is provided with a holding frame 11 that is arranged in parallel to an optical axis OA direction and has two cylinder parts 11a, 11b respectively holding optical components 12-14. An inward projection 11f is formed between the cylinder part 11a, 11b, which projects inwardly from the inner surfaces of the cylinder parts 11a, 11b. The inward projection 11f is formed in a substantially polygonal shape when viewed from the optical axis OA direction.</p> |
