| 摘要 |
PROBLEM TO BE SOLVED: To provide a light quantity adjusting device capable of being downsized, and to provide an optical apparatus equipped with the light quantity adjusting device and a lens.SOLUTION: A light quantity adjusting device 10 changes the size of a light passage opening using a plurality of light quantity adjusting blades 31-36. The plurality of light quantity adjusting blades 31-36 include blades 31b-36b for forming the light passage opening and bases 31a-36a having thicknesses thicker than those of the blades 31b-36b, and forms the light passage opening by overlapping adjacent blades in a circular pattern, with a first shaft serving as a rotary shaft provided on the bases 31a-36a as a supporting point. Outer ends (blade sides) 31j-36j opposite to light passage opening sides of the blades 31b-36b abut on the bases 31a-36a of the adjacent light quantity adjusting blades. |
