Image projector including optical fiber which couples laser illumination to light modulator
US6480634B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | May 18, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12107
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image projector projects an image onto a display screen and includes a laser source unit, an optical fiber, and a projector head. The projector head includes a light modulator and an optical projection arrangement. The optical fiber couples a laser illumination to the light modulator of the projector head from the laser source unit. The light modulator modulates the laser illumination to produce an array of pixels. The optical projection arrangement projects the array of pixels onto the display screen to produce the image on the display screen. Preferably, the image projector is a color image projector. In the color image projector, the laser source unit includes red, green, and blue lasers, which illuminate first, second, third light modulators. The first, second, and third light modulators produce red, green, and blue arrays of pixels, which the optical projection arrangement projects onto the display screen to produce a color image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.