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1. US20050024733 - Color rendering of illumination light in display systems

Office
United States of America
Application Number 10899635
Application Date 26.07.2004
Publication Number 20050024733
Publication Date 03.02.2005
Grant Number 7131762
Grant Date 07.11.2006
Publication Kind B2
IPC
F21V 3/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
3Globes; Bowls; Cover glasses
F21V 3/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
3Globes; Bowls; Cover glasses
04characterised by materials, surface treatments or coatings
G02B 7/00
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
7Mountings, adjusting means, or light-tight connections, for optical elements
CPC
G02B 26/008
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
007the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
008in the form of devices for effecting sequential colour changes, e.g. colour wheels
G01J 3/10
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
02Details
10Arrangements of light sources specially adapted for spectrometry or colorimetry
G01J 2003/1213
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
12Generating the spectrum; Monochromators
1213Filters in general, e.g. dichroic, band
Applicants Texas Instruments Incorporated
Inventors Richards Peter
Huibers Andrew
Combes Michel
Agents Brady, III W. James
Telecky, Jr. Frederick J.
Priority Data 10899635 26.07.2004 US
60490133 25.07.2003 US
60490147 25.07.2003 US
Title
(EN) Color rendering of illumination light in display systems
Abstract
(EN)

A method and apparatus for compensating for deficiency in the illumination light from a light source is provided, where the spectrum in the visible range of light from the light source is determined, and a deficiency at a wavelength or band of wavelengths in the visible range of light is determined therefrom, a color sequencing device is provided having a set of filters comprising red, green and blue filter segments, and an additional color balancing filter segment, and wherein a the color balancing segment is constructed so as to preferentially pass a band or bands of wavelengths, which band or bands are determined based on the determined deficiency of the light source.


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