Optical device, system and method
US7009789B1 · kind B1 · utility
11Cited by
24References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2000 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Feb 22, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device is formed of an array of micro-wedges where each micro-wedge is different in size and shape from adjacent micro-wedges. Each micro-wedge of the array directs light in a predetermined direction toward a particular sub-region of an angular pattern. The positions of the micro-wedges in the device may be essentially random with respect to the corresponding positions of the sub-regions. The device causes the output light to fill a large angular spread with homogenized light with clear boundaries and edges. The device employs refraction or reflection, and the device operates efficiently over a broad wavelength band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.