Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1984-10-09
1986-10-07
Adams, Russell E.
Optics: measuring and testing
Range or remote distance finding
With photodetection
354403, G03C 310, G03B 300
Patent
active
046156160
ABSTRACT:
A measuring distance apparatus for measuring a distance to an object in accordance with an incident position of a reflected light of a signal light projected to the object is disclosed. It comprises photosensing means for sensing the signal light having a plurality of photo-electric converters each having a first electrode connected to a first range of potential and a second electrode connected to the second electrode of other photo-electric converter by a resistive wire, means for connecting at least one point on the resistive wire to a second range of potential which is different from the first range of potential by a conductive wire having a lower resistance than the resistance of the resistive wire, switching means for connecting and disconnecting the conductive wire, and detection means connected to the resistive wire at a point farther from or closer to the incident point of the signal light varying with a distance to the object from a point on the resistive wire to which the conductive wire is connected, for detecting an output status at that point. The incident position of the signal light is detected from a change of the output status of the resistive wire connected to the detection means so that the distance to the object is detected.
REFERENCES:
patent: 4288152 (1981-09-01), Matsuda
patent: 4436418 (1984-03-01), Morino
patent: 4441810 (1984-04-01), Momose et al.
patent: 4534636 (1985-08-01), Sugawara
patent: 4542971 (1985-09-01), Numata
patent: 4571048 (1986-02-01), Sugawara
Adams Russell E.
Canon Kabushiki Kaisha
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