Focus detecting device

Details Focus detecting device Focus detecting device

1993-09-24

1994-08-09

Gray, David M.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

2502019, G03B 1300

Patent

active

053371151

ABSTRACT:
A focus detecting device is disclosed including an image sensor, a phase control plate for causing image forming positions of light incident on a plurality of areas in an imaging plane of the image sensor to differ from each other, and a focus detecting circuit for computing the image signals corresponding to the plurality of areas of which the image forming positions are different to detect a focusing state. A solid-state image sensor is also disclosed including a plurality of photoelectric conversion element rows and a phase control plate positioned on a photoelectric conversion plane of the photoelectric conversion element rows to cause image forming positions of incident light to differ at intervals of integer times the interval in the photoelectric conversion element rows.

REFERENCES:
patent: 4572476 (1986-02-01), Oinoue
patent: 4593188 (1986-06-01), Ida
patent: 4708436 (1987-11-01), Kleinknecht

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