Position detection device, optical device, light source device, and projector

A position detection device includes: a sensor that includes a light emission unit and a light reception unit receiving light emitted from the light emission unit; a driving unit; a gear (transmission gear) that is disposed at a position facing the sensor and is rotated by power from the driving uni...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Nemura Akira, Okubo Hirofumi, Maeta Kazunori
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 CINEMATOGRAPHY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TESTING
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Beschreibung
Zusammenfassung:	A position detection device includes: a sensor that includes a light emission unit and a light reception unit receiving light emitted from the light emission unit; a driving unit; a gear (transmission gear) that is disposed at a position facing the sensor and is rotated by power from the driving unit; and a control unit that drives the driving unit based on an amount of light received by the light reception unit and detected by the sensor.