04004852 is referenced by 88 patents and cites 7 patents.

An automatic ranging device for optical instruments focuses two images of at least a portion of the field of view of the instrument on an array of photosensitive cells. The electronic output of the individual cells is related to the intensity of the light impinging thereon. The electronic output corresponding to the first image is compared with the electronic output corresponding to the second image. The relative location of corresponding portions of the first and second images is a measure of the range to the object which is imaged. Electronic circuitry determines the location at which image coincidence occurs and controls the focus of the optical instrument accordingly.

Title
Integrated automatic ranging device for optical instruments
Application Number
5/591578
Publication Number
4004852
Application Date
June 30, 1975
Publication Date
January 25, 1977
Inventor
Eugene E Pentecost
Anaheim
CA, US
Agent
Robert Ochis
G Donald Weber Jr
H Fredrick Hamann
Assignee
Rockwell International Corporation
CA, US
IPC
G03B 7/08
G01C 3/00
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