Automatic focusing camera

Details Automatic focusing camera Automatic focusing camera

1990-08-22

1992-09-08

Perkey, W. B.

354441, G03B 1336

Patent

active

051462613

ABSTRACT:
An automatic focusing camera including a control mechanism by which one of a plurality of automatic focusing modes is automatically selected in accordance with a photographing mode. The view finder of the camera is provided with a plurality of distance measuring zones, and distances of objects corresponding thereto are measured, respectively, to enable an output of distance measuring data. The automatic focusing modes are set for a plurality of the distance measuring zones, to thereby focus the photographing lens on one or more objects corresponding to the distance measuring zones. The control unit, based on lens information of the photographing lens and the distance measuring data, calculates a depth of field in accordance with the selected automatic focusing mode, and determines whether or not the object distance is within the required depth of field, to thereby cause the photographing lens to be moved into the required depth of field.

REFERENCES:
patent: 4750013 (1988-06-01), Yasukawa
patent: 4878080 (1989-10-01), Takehana et al.
patent: 4943824 (1990-07-01), Nabeshima et al.
English Abstract to Japanese Patent 63-17416.

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