Digital auto focus in optical systems

Details Digital auto focus in optical systems Digital auto focus in optical systems

G - Physics

01

C

354/25, 33/46, 8

G01C 3/08 (2006.01)

Patent

CA 1086541

ABSTRACT OF THE DISCLOSURE A digital auto focus system includes first and second detector arrays which receive first and second detection images of an object. The detection images are displaced by a number n of detectors depending upon the distance between the object and the detector arrays. The output signals of the detector arrays are processed to provide a signal indicative of the number n. This signal may be used, for example, to control the position of a lens in a photographic system.

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