LIGHT SOURCE DEVICE, ILLUMINATING DEVICE, MONITORING DEVICE, IMAGE DISPLAY DEVICE AND METHOD FOR CONTROLLING LIGHT SOURCE DEVICE

PROBLEM TO BE SOLVED: To provide a light source device, dispensing with a light receiving element for photo detection, and stabilizing output by simple and compact constitution, an illuminating device using the light source device, a monitoring device, an image display device and a method for contro...

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Bibliographische Detailangaben
1. Verfasser:	ZAKOUJI MAKOTO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS 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 DEVICES USING STIMULATED EMISSION ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a light source device, dispensing with a light receiving element for photo detection, and stabilizing output by simple and compact constitution, an illuminating device using the light source device, a monitoring device, an image display device and a method for controlling light source device. SOLUTION: The light source device includes: a semiconductor element 11 which is a light source part for emitting light; an SHG element 14 which is a wavelength conversion element for converting the wavelength of light from the light source; a thermistor 18 which is a temperature measuring part for measuring the temperature of the wavelength conversion element; a heater 17 which is a temperature control part for controlling the temperature of the wavelength conversion element; and a control part for controlling the drive of the temperature control part based on a value measured by the temperature measuring part. The control part detects a charge amount of temperature of the wavelength conversion element by absorption of light from the light source to the wavelength conversion element. COPYRIGHT: (C)2009,JPO&INPIT