Indicating apparatus within finder of single-lens reflex camera
US4949118A · kind A · utility
12Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1988 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Dec 21, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A single-lens reflex camera has a finder device in which rays of light of an object to be photographed are reflected by a mirror to form an image of the object on a focusing glass, an information indicating apparatus within the finder device which can project photographing information represented by a letter or a figure or other symbol onto the focusing glass, an indication control circuit which controls the information to be indicated in the information indicating apparatus, and an information indicating switch for turning the information projector ON and OFF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.