Focusing position detection apparatus

Details Focusing position detection apparatus Focusing position detection apparatus

1980-02-20

1983-02-15

Schreyer, Stafford D.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250201, 352140, G03B 7099, G01J 120

Patent

active

043737919

ABSTRACT:
In a pupil divisional type focusing position detection apparatus of the type capable of detecting the infocus state of a taking lens based on a phase difference of output signals produced from at least one photosensor array for receiving rays of image formation light from the exit pupil of the taking lens, the focusing position detection accuracy can be changed as desired or in accordance with F-number of the taking lens.

REFERENCES:
patent: 4047022 (1977-09-01), Holle
patent: 4097730 (1978-06-01), Korpel
patent: 4185191 (1980-01-01), Stauffer
Keppler's Slr Notebook, Modern Photography Apr. 1980, pp. 95-97.

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