04185191 is referenced by 87 patents and cites 11 patents.

A system for determining the range to an object utilizing a plurality of radiation responsive detectors such as charge coupled devices arranged in groupings where a first grouping of detectors receives radiation from the object primarily through a first portion of a lens and a second grouping of the detectors receives radiation from the object primarily through a second portion of the lens. There is a predetermined relationship between the outputs of the detectors in the first grouping with respect to the detectors in the second grouping when the object is at a predetermined range and changes in the range of the object produce changes in the relationship so as to produce a resultant signal which varies with the range and which may be used for the automatic focussing of photographic or television cameras.

Title
Range determination system
Application Number
5/912688
Publication Number
4185191
Application Date
June 5, 1978
Publication Date
January 22, 1980
Inventor
Norman L Stauffer
Englewood
CO, US
Agent
Charles J Ungemach
Assignee
Honeywell
MN, US
IPC
G01J 1/20
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