Light source and display
US6061489A · kind A · utility
151Cited by
17References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1995 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | Oct 20, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S385/901
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light source comprises an array of contiguous transparent blocks, each of which contains a light emitter such as a cold cathode fluorescent tube. The blocks have a transparent front surface which may be optically diffusing, the other surfaces being coated with a thin optically reflective layer so that each block acts as a light guide. The tubes are independently controllable, for instance so as to simulate a moving light source which may be controlled so as to track the position of an observer of a 3D display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.