OPTICAL PATH SHIFTING DEVICE, IMAGE DISPLAY DEVICE, AND METHOD FOR CONTROLLING OPTICAL PATH SHIFTING DEVICE

An optical path shifting device includes: a holding frame holding a rectangular glass plate; a support part supporting the holding frame in a swingable state; an actuator causing the holding frame to swing; a magnetic sensor detecting a position of the holding frame; and a thermistor detecting a tem...

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Bibliographische Detailangaben
Hauptverfasser:	WAKABAYASHI, Shinichi, NEMURA, Akira, FUJISHIGE, Nozomi, HIRAKURA, Takao, MAETA, Kazunori, YANAGIHARA, Daisuke
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHOTOGRAPHY PHYSICS TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	An optical path shifting device includes: a holding frame holding a rectangular glass plate; a support part supporting the holding frame in a swingable state; an actuator causing the holding frame to swing; a magnetic sensor detecting a position of the holding frame; and a thermistor detecting a temperature of the magnetic sensor. A drive signal processing circuit includes: an amplifier amplifying a reference signal to generate a drive signal and supplying the drive signal to the actuator; and a signal processing unit inputting the reference signal and an amplifier gain to the amplifier. The signal processing unit performs gain adjustment processing to correct an amplitude value found from an output from the magnetic sensor, based on an output from the thermistor, and to adjust the amplifier gain, based on a corrected value.