Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1990-03-09
1991-03-19
Buczinski, Stephen C.
Optics: measuring and testing
Range or remote distance finding
With photodetection
356 4, 356141, 356152, 172 45, G01C 300, G01C 308, G01B 1126
Patent
active
050005642
ABSTRACT:
A laser beam three dimensional position measurement system includes a laser transmitter mounted at a stationary reference position at a work site and a receiver mounted on a mobile machine at the site. The transmitter produces a laser reference plane by sweeping a laser beam about the transmitter. The receiver includes two spaced apart laser beam detectors for measuring the horizontal angle of the incoming beam with respect to the face of the receiver at two spaced apart locations on the face of the receiver. The horizontal angles are used to determine the range of the receiver from the transmitter. The transmitter includes an azimuth device for providing signals to the receiver indicative of the azimuth angle at which the receiver is positioned with respect to a reference axis that extends from the transmitter. The receiver includes a decoder signal receiving device for receiving the angle signals from the transmitter in order to determine its azimuth angle.
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Buczinski Stephen C.
Spectra-Physics Inc.
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