Lens system
US7035023B2 · kind B2 · utility
18Cited by
15References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2004 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | May 4, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/0035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This application discloses a lens system comprising in order from an object side to an image side: an aperture stop; a first lens element, having a positive optical power; and a second lens element, having a negative optical power. By setting the shapes of the respective lens elements and the materials making up the respective lens elements so as to meet predetermined conditions in such a lens system, a lens system of a compact size which provides good optical performance is realized while securing telecentric characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.