Constant-speed scanning lens system
US4269478A · kind A · utility
14Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1979 |
| Grant date | May 26, 1981 |
| Priority date | — |
| Expiry date | Oct 11, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A constant-speed scanning lens system comprising a first, second, third, fourth and fifth lens components, the first lens component being a positive meniscus lens arranged concave toward the incident side, the second lens component being a negative lens, the third, fourth and fifth lens components being positive meniscus lenses respectively arranged concave toward the incident side, the constant-speed scanning lens system having a small F number, wide field angle and compact size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.