Reverse telephoto lens
US5703726A · kind A · utility
7Cited by
9References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1996 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Apr 12, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A reverse telephoto lens includes a front negative group of lens components having a front component with greater than normal separation from a rear positive group of lens elements. Preferably, the front negative group also includes a rear positive component that is meniscus concave to the front.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.