Compensation plate for tilted plate optical aberrations
US5490013A · kind A · utility
12Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1995 |
| Grant date | Feb 6, 1996 |
| Priority date | — |
| Expiry date | Feb 7, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3105
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to compensation plates for eliminating astigmatism and coma optical aberration in optical systems. In particular, the present invention can be used in LCD projection systems to compensate for aberrations in different color channels. This enables the production of LCD systems completely free of astigmatism and/or coma.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.