Low cost telephoto and normal lens camera with an extendable flash
US4690531A · kind A · utility
9Cited by
14References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1985 |
| Grant date | Sep 1, 1987 |
| Priority date | — |
| Expiry date | Jun 24, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/0507
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A still camera comprised of a dual, normal and telephoto, lens with flash, incorporates features which allow controlling several camera functions with a single sliding multi-position flash housing. Position "normal" configures the camera so that the viewfinder has a normal field of view, the flash is unextended, and an objective lens of normal focal length is in exposure position. Position "tele" configures the camera so that the viewfinder has a narrow field of view, a telephoto lens is in exposure position, and the flash is fully extended. Additional positions of the flash housing and lens and viewfinder are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.