Optics: measuring and testing – Angle measuring or angular axial alignment – Relative attitude indication along 3 axes with photodetection
Patent
1994-02-14
1996-04-23
Buczinski, Stephen C.
Optics: measuring and testing
Angle measuring or angular axial alignment
Relative attitude indication along 3 axes with photodetection
2502062, 2502061, 3561412, 3561415, G01B 1126, G01C 100, G01C 2102
Patent
active
055108938
ABSTRACT:
An optical-type position and posture detecting device includes at least two light sources. The two light sources are disposed at a predetermined distance. The two light sources are alternately switched over. A light receiving element receives light from each of light sources and detects at least two-dimensional angle with regard to each light source. The posture and position of the light receiving element is calculated on the basis of the predetermined distance and two-dimensional angles. An angle detecting device includes a photodetector having at least two receiving portions. At least one light intercepting plate disposed between two light receiving portions, vertically with regard to light receiving portions. The incident angle of light from a light source falling the photodetector is calculated based on the quantities of light received on each of light receiving portions. The light intercepting plate may be made of a light absorbing material or may be made in the form of a two-surface mirror.
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Buczinski Stephen C.
Digital Stream Corporation
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