| 发明名称 |
LIGHT AMOUNT ADJUSTING APPARATUS, LENS BARREL, OPTICAL APPARATUS, AND IMAGING APPARATUS |
| 摘要 |
Provided is a light amount adjusting apparatus comprising a base that has a rotary drive unit, and a rotating unit that is arranged rotatably about a predetermined axis with respect to the base, and drives aperture blades by rotating with the rotary drive unit, wherein one of the base and the rotating unit is provided with two arc-shaped parts to be engaged around the axis, the other is provided with two engaging parts engaging with each of the arc-shaped parts to be engaged. |
| 申请公布号 |
US2015260947(A1) |
申请公布日期 |
2015.09.17 |
| 申请号 |
US201514645772 |
申请日期 |
2015.03.12 |
| 申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
Noguchi Kazuhiro |
| 分类号 |
G02B7/04;H04N5/225 |
主分类号 |
G02B7/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A light amount adjusting apparatus, which is arranged in an optical path, for driving aperture blades and changing an opening diameter to adjust a light amount, the light amount adjusting apparatus comprising:
a base that has a rotary drive unit; and a rotating unit that is arranged rotatably about a predetermined axis with respect to the base, and drives the aperture blades by rotating with the rotary drive unit, wherein one of the base and the rotating unit is provided with two arc-shaped parts to be engaged around the axis, the other is provided with two engaging parts engaging with each of the arc-shaped parts to be engaged. |
| 地址 |
Tokyo JP |
