Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1982-06-07
1985-02-12
Buczinski, S. C.
Optics: measuring and testing
Range or remote distance finding
With photodetection
356 4, G01C 308
Patent
active
044987641
ABSTRACT:
The invention provides a distance measuring apparatus for determining the distance of a target object as a function of the transit time of a measurement light pulse which is emitted by a transmitter in the transmission portion of the apparatus towards the target object, reflected thereby and received by the receiving portion of the measuring apparatus and for attainment of superior measurement accuracy the intensity of the measurement light pulse is correlated to the distance and reflectivity of the target object as well as to the "transparency" of the transmission medium between the measuring apparatus and the target object, such correlation being effected by optical damping of either the transmitted light pulses and/or the reference light pulse and/or the light pulses reflected by the target. Optical damping may advantageously be effected by means of a light path change-over switch which feeds a light pulse, generated by the transmitter by controlling the timing of a trigger generator for the transmitter, so that the full intensity or attenuated optic light is passed either into a transmitting measurement light path or into a reference light path having a known transit time for the reference light therein, electrical delays inherent in the apparatus and causing errors in distance measurement being compensated for by subtracting the transit time measurement values of reference light pulses from transit time measurement values of transmitted measurement light pulses.
REFERENCES:
patent: 2956472 (1960-10-01), Hildebrand
patent: 3402630 (1968-09-01), Blau et al.
patent: 3519829 (1970-07-01), Pradel et al.
patent: 3619058 (1971-11-01), Hewlett et al.
patent: 3652161 (1972-03-01), Ross
patent: 3779645 (1973-12-01), Nakazawa et al.
patent: 3802775 (1974-04-01), Hughes
patent: 3813165 (1974-05-01), Hines et al.
patent: 3941999 (1976-03-01), Moyers, Jr.
patent: 4297030 (1981-10-01), Chaborski
Bolkow Ludwig
Chaborski Hoiko
Mehnert Walter
Bolkow Ludwig
Buczinski S. C.
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