Camera for taking a picture in a good focus condition
US6597866B2 · kind B2 · utility
0Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2002 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Jun 27, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/097
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera uses a program shutter as a shutter device. When an exposure value becomes larger than EV9, a stop of the camera is closed down so as to increase an f-number. In a case that the camera is loaded with a photographic film having film sensitivity of ISO 1000 or more, an upper limit of a focus set position of a taking lens is fixed to 3 m. By utilizing a depth of field, a picture is taken in a state that a blur is reduced, relative to a subject existing within a range from a comparatively short photographic-distance to a far photographic-distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.