Soft focus lens system
US5267086A · kind A · utility
28Cited by
2References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1990 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Oct 19, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An autofocusable soft focus lens system includes a movable front lens group having a positive power, and a stationary rear lens group having a negative power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.