Automatic focusing device

Details Automatic focusing device Automatic focusing device

1983-12-28

1985-03-12

Adams, Russell E.

3541951, G03B 300

Patent

active

045041350

ABSTRACT:
An automatic focusing device of a camera capable of photo-taking in infrared ray has means for detecting a focus condition of an imaging lens and correction means for producing information representing a difference between a focusing point of an image formed by a visible ray and a focusing point of an image formed by an infrared ray. The imaging lens is selectively moved to an in-focus position for the visible ray or an in-focus position for the infrared ray based on the focus information from the focus detection means and the correction information from the correction means.

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