Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1987-03-25
1988-04-26
Perkey, W. B.
Optics: measuring and testing
Range or remote distance finding
With photodetection
356 1, G03B 300, G01C 300
Patent
active
047408065
ABSTRACT:
A device for finding the range to an object for use in an automatic focusing camera consisting of a light emitting source for emitting light towards the object and a light detecting element for receiving reflected light from the object and producing an output for determining the range to the object. The light detecting element is spaced from the light emitting source by a given base length. The light emitting source consists of a plurality of light emitting elements aligned side-by-side in the horizontal direction orthogonally intersecting the base length.
REFERENCES:
patent: 3936187 (1976-02-01), Momose
patent: 4470681 (1984-09-01), Johnson
patent: 4591257 (1986-05-01), Sawano
Chinon Kabushiki Kaisha
Ferguson Jr. Gerald J.
Foycik, Jr. Michael J.
Hoffman Michael P.
Perkey W. B.
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