Anamorphic optical system
US5200850A · kind A · utility
20Cited by
11References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1992 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | Mar 5, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0031
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An anamorphic optical system is provided with an imaging lens group comprising one or more plastic lenses and a single plastic correcting lens disposed on the image plane said of the imaging lens. The focal displacement of the optical system due to temperature changes is kept within the focal depth of the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.