LIGHTING SYSTEM AND PROJECTION-TYPE IMAGE DISPLAY

PROBLEM TO BE SOLVED: To provide a lighting system capable of obtaining practical characteristics, even though it uses solid-state light-emitting elements, such as semiconductor laser devices exhibiting a Gaussian distribution, and to provide a projection type image display using the same. SOLUTION:...

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Bibliographic Details
Main Authors TORASAWA KENJI, TSUCHIYA YOICHI, KANAYAMA HIDEYUKI, HIBINO KATSUTOSHI, FUNATSUKURI YASUO, YOSHII SHOICHI
Format Patent
LanguageEnglish
Published 05.08.2004
Edition7
Subjects
ACCESSORIES THEREFOR
APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM
CINEMATOGRAPHY
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
ELECTROGRAPHY
FREQUENCY-CHANGING
HOLOGRAPHY
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHOTOGRAPHY
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Summary:PROBLEM TO BE SOLVED: To provide a lighting system capable of obtaining practical characteristics, even though it uses solid-state light-emitting elements, such as semiconductor laser devices exhibiting a Gaussian distribution, and to provide a projection type image display using the same. SOLUTION: The lighting system 1 comprises a light source consists of a plurality of LD (laser diode) chips 11...; a parallelizing lens 12 provided on the light-outgoing side of each LD chip 11; and a pair of fly-eye lens 13a, 13b. Even if the LD chips 11 exhibit a distribution in the emitted light intensity, each light beam of a plurality of light beams in a light-receiving area (lens group 13a) is led to a liquid display panel 3 together, the distribution of emitted light intensity is dispersed, consequently brightness of each point on a liquid crystal display panel 3 can be equalized. COPYRIGHT: (C)2004,JPO&NCIPI
Bibliography:Application Number: JP20030429764