DIRECTION MEASURING INSTRUMENT

PURPOSE:To easily and accurately detect the incidence direction of light, by one photodetector by providing a cylindrical light spot position detector which has light transmissivity and a rod type omnidirection photodetector which is concentric with the detector. CONSTITUTION:The measuring instrumen...

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Bibliographische Detailangaben
Hauptverfasser:	HOSOI MITSUO, IMAIZUMI HISAAKI, NISHI YOKICHI, HIROOKA MASATAKE, SUZUKI TORU, TORIHATA SHIGENORI, MATSUDA TOMOO
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES COLORIMETRY DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES GYROSCOPIC INSTRUMENTS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS RADIATION PYROMETRY RADIO DIRECTION-FINDING RADIO NAVIGATION SURVEYING TESTING
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Beschreibung
Zusammenfassung:	PURPOSE:To easily and accurately detect the incidence direction of light, by one photodetector by providing a cylindrical light spot position detector which has light transmissivity and a rod type omnidirection photodetector which is concentric with the detector. CONSTITUTION:The measuring instrument consists of the cylindrical light spot position detector 1 which has light transmissivity and the thin rod type omnidirectional photodetector 2 which is concentric with the detector 1. When a light beam L is incident on the photodetector 2 after being transmitted through the detector 1, a light generating current is led out of a current collecting electrode 5. Then when the light beam I from the light projecting device 6 which swivels is incident on the photodetector 2, the segment which connects the center axis of the cylinder and the incidence position P detected by the detector 1 indicates the direction of the device 6. Therefore, when the light beam L is sensed by the photodetector 2, an azimuth psi is found by arithmetic according to a specific equation on the basis of respective currents outputted by the detector 1.