Optical element having a toric surface and method of making
US8136947B2 · kind B2 · utility
2Cited by
16References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 24, 2008 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Aug 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3152
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image forming system is described that includes a light source that provides a light beam and an anamorphic refractive optical element. A first outer surface of the anamorphic element faces the light source and includes a toric surface. The light beam is incident upon the first outer face and then an incident surface of the anamorphic element. The anamorphic element directs the light beam to an image forming device. An illumination system is also described where an anamorphic element includes a toric surface and a facet surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.