Light quantity adjusting device
US7104707B2 · kind B2 · utility
9Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 2004 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Jan 28, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device is provided having one or more light quantity controlling members that move into, and out of, an opening portion through which light passes and which is formed by at least a portion of inner diameter sides of a first stator and a second stator, thus controlling the amount of light passing therethrough. The one or more light quantity controlling members are disposed between the magnet and the second stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.