| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens barrel that performs optical axis adjustment of an optical element and can stably hold the optical element subject to optical axis adjustment even under a high-temperature atmosphere.SOLUTION: A lens barrel is held by a touchable presser ring 5 to an optical element G1 and includes an annular elastic member 7 energizing the optical element in an optical axis direction. When a male screw part 5a of the presser ring is coupled to a female screw part 4a of a barrel main body 4, the presser ring comes into contact with the optical element and optical axis adjustment is performed, and the annular elastic member comes into contact with and energizes the optical element. After the optical axis adjustment, even when at least part of the presser ring departs from the optical element, the annular elastic member continues to contact with the optical element. |
