Light quantity control apparatus, optical apparatus and image pickup apparatus
US9500934B2 · kind B2 · utility
1Cited by
2References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2014 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Nov 6, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/55
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light quantity control apparatus includes multiple blade members each including a first curved surface-shaped portion and a hole portion, and a member including multiple protrusion portions each inserted into the hole portion of one of the blade members. The member includes a second curved surface-shaped portion shaped along the first curved surface-shaped portion of each of the blade members. The protrusion portions extend from the second curved surface-shaped portion and extend in parallel with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.