Apparatus and method for generating full-color images using two light sources
US5657165A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1995 |
| Grant date | Aug 12, 1997 |
| Priority date | — |
| Expiry date | Oct 11, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0154
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A miniature, full-color display includes two rows of light-emitting elements that are both selected to emit light in substantially non-overlapping wavelength ranges comprising a blue-green wavelength range and a red wavelength range. The light-emitting elements as well as a magnifying lens, and an oscillating mirror are placed in a light-tight box having an opening through which the mirror may be viewed. The light from the blue-green elements is filtered by a filter which transmits either blue or green light depending on the mirror movement. The light-emitting devices are selectively illuminated as the mirror moves to create a full-color, substantially planar, two-dimensional image. The light box may be sized to be hand-held, or may be capable of being mounted to a pair of glasses, a headband or similar device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.