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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Bibliographic Details
Main Authors SAKURAI MASAAKI, AIDA RYUICHI, NISHIMURA MITSUO
Format Patent
LanguageEnglish
Published 06.04.2001
Edition7
Subjects
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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Summary: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.
Bibliography:Application Number: JP19990266945