Lens mount accessory system
US5105312A · kind A · utility
11Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1991 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Apr 12, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/004
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A positioning wheel resiliently engages and moves an optical element to a selected position within a channel of a holder mounted in front of a camera lens. A brake mechanism prevents the optical element from accidentally falling out of the channel. A handle-operated camming mechanism provides for a quick lock/unlock interlock of a rotary holder in a desired angular orientation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.