Camera system
US5223884A · kind A · utility
3Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1990 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Aug 16, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/425
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera includes an object distance detecting device. The detected object distance can be used to calculate magnification which, in turn, can be used to determine an aperture value. The object distance detecting device can be selectively operated depending on, for example, whether flash lighting is being used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.