Interchangeable lens camera system
US4733258A · kind A · utility
25Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1985 |
| Grant date | Mar 22, 1988 |
| Priority date | — |
| Expiry date | Sep 27, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An intermediate accessory, such as a rear converter, a bellows, and an intermediate ring or the like, can be mounted between an interchangeable lens and a camera body. Information relating to the vignetting amount which takes place in the interchangeable lens is divided in two parts, the respective parts are kept in the interchangeable lens and in the intermediate accessory, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.