SURFACE LIGHT SOURCE DEVICE HAVING OPTICAL SENSOR AND DISPLAY SYSTEM HAVING THE SAME

PURPOSE: A surface light source device and a display system having the same are provided to automatically correct changes in chromaticity and luminance of illumination light by detecting an intensity of light by an optical sensor. CONSTITUTION: A surface light source device includes a box(1) having...

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Bibliographische Detailangaben
Hauptverfasser:	YONEDA TOSHIYUKI, SAKAI SEIZI, MORI AKIHIRO
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ADVERTISING BLASTING CRYPTOGRAPHY 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 DISPLAY DISPLAYING EDUCATION ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FREQUENCY-CHANGING HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LABELS OR NAME-PLATES LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS NON-PORTABLE LIGHTING DEVICES OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS SIGNS SYSTEMS THEREOF TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE: A surface light source device and a display system having the same are provided to automatically correct changes in chromaticity and luminance of illumination light by detecting an intensity of light by an optical sensor. CONSTITUTION: A surface light source device includes a box(1) having an opening(1a), and a diffusion plate(2) disposed in the opening for diffusing incident light. Light sources(4) such as light emitting diodes are mounted in the box. A reflection plate(6) is provided in the box to reflect the incident light toward the diffusion plate. An optical sensor(8) is disposed facing the diffusion plate for detecting light from the diffusion plate. On the reference to the detection value of the optical sensor, a controller controls an intensity of light emitted from the light sources.