Device for automatically adjusting focus or detecting object dis

Details Device for automatically adjusting focus or detecting object dis Device for automatically adjusting focus or detecting object dis

1989-09-08

1991-10-01

Perkey, W. B.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

2502012, G03B 1336, G02B 734

Patent

active

050538012

ABSTRACT:
An automatic focus adjusting device detects focus condition respectively of a plurality of areas of a scene to be photographed to calculate respective focus adjusting data, and automatically adjusts the focus of an objective lens on an object in the scene based on the focus adjusting data. And the automatic focus adjusting device decides a focus adjusting data from the plurality of focus adjusting data based on an image magnification data representing the size of the object relative to the scene, a focal length of the objective lens or an object distance to automatically adjust the focus.

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