Variable aberration imaging optical system
US4865426A · kind A · utility
4Cited by
12References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Dec 23, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A variable aberration imaging optical system comprises an imaging optical system and an optical device disposed in the optical system and capable of controlling the imaging characteristic of the imaging optical system. The optical device has a medium for forming an index gradient therein by heat, and a device for imparting heat to a desired position on the medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.