Athermalized and achromatized optical systems employing diffractive optical element
US5691847A · kind A · utility
30Cited by
9References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1994 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | Aug 8, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/4283
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An athermalized and achromatized optical system (10, 30) has a lens group (12, 32) focusing energy on a focal plane (14, 42). The lens group (12, 32) includes at least two optical elements (22, 24, 26, 34, 36) of different material and a diffractive optical element (28, 40). The system (10, 30) enables athermalization and achromatization of the optical system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.