Picture frame switching mechanism
US5732298A · kind A · utility
8Cited by
3References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1996 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Jul 25, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B13/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The picture frame switching mechanism according to the present invention includes: a plurality of picture frame definition members whose relative position in a plane perpendicular to an optical axis of an optical system is changed so as to switch picture frames; a drive section which drives a portion of the plurality of picture frame definition members; and a linked driving section which drives other portion of the picture frame definition members in linkage according to predetermined conditions with driving of the portion of the picture frame definition members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.