Refractive multispectral objective lens system and methods of selecting optical materials therefor
US6950243B2 · kind B2 · utility
9Cited by
21References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2003 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Jun 7, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/146
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Refractive optical systems having first and second lens systems are transmissive to infrared radiation. The first lens system includes one of BaF2 and CaF2. An exemplary second lens system includes an optical material selected from at least spinel, MgF2, and aluminum oxynitride. Such exemplary refractive optical systems provide correction of chromatic aberration in multiple wavelength bands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.