Optical element having a toric surface
US8388150B2 · kind B2 · utility
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28References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2012 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Feb 15, 2032 |
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.