Removable (lens position limiting) stop for auto-manual focusing cameras
US4160590A · kind A · utility
28Cited by
3References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1978 |
| Grant date | Jul 10, 1979 |
| Priority date | — |
| Expiry date | Apr 17, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/40
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A manually positionable lens movement limiting stop is provided that limits the manual movement of a variable focus lens in a photographic camera to within its normal focusing range wherein said camera has a manual and automatic focus control system and wherein said lens must be moved outside of its said normal focusing range for proper automatic focus control system operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.