Zoom lens mount barrel
US4387968A · kind A · utility
17Cited by
1References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 9, 1980 |
| Grant date | Jun 14, 1983 |
| Priority date | — |
| Expiry date | Oct 9, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A compact and lightweight zoom lens mount barrel in which the number of layers between the outer edges of lenses and the outer surface of the mount barrel is minimized and for which the assembly operation is simplified. A rear lens group moving cam slots is formed in a support sleeve and a fixed connecting sleeve is threadedly engaged with the support sleeve. Front and rear lens support frames are respectively engaged with the outer and inner periphery of the support sleeve. A front lens group moving cam slots is formed in the front lens group support frame. A fixed sleeve is engaged with the connecting sleeve by a stop screw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.