초록 ▼

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

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.

대표청구항 ▼

Apparatus for producing an output that varies with the distance to an object comprising: lens means; radiation discriminating means, said lens means receiving radiation from the object and transmitting it to said radiation discriminating means, said radiation discriminating means producing a first r

Apparatus for producing an output that varies with the distance to an object comprising: lens means; radiation discriminating means, said lens means receiving radiation from the object and transmitting it to said radiation discriminating means, said radiation discriminating means producing a first radiation distribution pattern from radiation received from a first portion of said lens means and a second radiation distribution pattern from radiation received from a second portion of said lens means, the first radiation distribution pattern being in superimposition with respect to the second radiation distribution pattern at a first image plane when the object is at a predetermined distance from said lens means, the first and second radiation distribution patterns moving out of superimposition as the object moves to distances other than the predetermined distance, the amount of movement of the radiation distribution patterns from superimposition being indicative of the change of distance between the object and said lens means from the predetermined distance; first radiation responsive detector means mounted proximate to the image plane to receive radiation in the first of the radiation distribution patterns and to produce a first output signal in accordance therewith; second radiation responsive detector means mounted proximate the image plane to receive radiation in the second of the radiation distribution patterns and to produce a second output signal in accordance therewith; and means connected to said first and second radiation responsive detector means to receive the first and second output signals therefrom and to produce a resultant output indicative of the amount of movement of the first and second radiation distribution patterns from superimposition.