TRANSMISSION TYPE OPTICAL SENSOR

PROBLEM TO BE SOLVED: To provide a transmission type optical sensor having less power consumption by allowing operation at an appropriate light-emission intensity. SOLUTION: In this transmission type optical sensor a detecting part 6 and an electron mirror part 7 are provided, the detecting part 6 e...

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Bibliographische Detailangaben
Hauptverfasser:	SAKURAI MASAAKI, AIDA RYUICHI, NISHIMURA MITSUO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS COLORIMETRY DETECTING MASSES OR OBJECTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING PHYSICS RADIATION PYROMETRY SEMICONDUCTOR DEVICES TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a transmission type optical sensor having less power consumption by allowing operation at an appropriate light-emission intensity. SOLUTION: In this transmission type optical sensor a detecting part 6 and an electron mirror part 7 are provided, the detecting part 6 emits a modulation beam 3 at a prescribed current value I, and informs the electron mirror part 7 of the light-emission intensity which is determined with the current value I by its modulation frequency (f). The detecting part 6 receives only a modulation beam 4 of the same current value I as is transmitted from the electron mirror part 7, and based on the presence of received light, changes the modulation frequency (f) and the current value I for adjusting light-emission intensity.