Photodetector, method of using the same, and image forming apparatus

Photodetector, method of using the same, and image forming apparatus

A photodetector includes a light emitting portion for applying light, a light receiving portion for sensing the light, and a light guiding member 3 for guiding the light from the light emitting portion to a surface to be measured and guiding detection light from the surface to be measured to the lig...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: HISANO TOHRU
Format: Patent
Sprache:eng
Schlagworte:
CINEMATOGRAPHY
COLORIMETRY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MAGNETOGRAPHY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
PHOTOGRAPHY
PHYSICS
RADIATION PYROMETRY
TESTING
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Beschreibung
Zusammenfassung:A photodetector includes a light emitting portion for applying light, a light receiving portion for sensing the light, and a light guiding member 3 for guiding the light from the light emitting portion to a surface to be measured and guiding detection light from the surface to be measured to the light receiving portion. The light guiding member has a sheet-like optical transmission medium, which is disposed at a portion facing to the surface to be measured and transmits the light by internal reflection. The sheet-like optical transmission member has an optical aperture facing to the surface to be measured.