Zoom finder system
US4992809A · kind A · utility
31Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1989 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Oct 26, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/051
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A finder apparatus for use with a lens-shutter type camera composing a zoom imaging optical system, a zoom finder optical system separate from said zoom imaging optical system, and an electronic flash device. The zoom finder optical system is made as a real-image zoom finder apparatus, with part of the associated optical elements being disposed behind the electronic flash device, and part of the optical path from the objective lens to the eyepiece being bent backward of the electronic flash device to pass through the optical element disposed behind the electronic flash device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.