Automatic focus adjusting apparatus of a camera

Details Automatic focus adjusting apparatus of a camera Automatic focus adjusting apparatus of a camera

1991-01-29

1992-08-11

Perkey, W. B.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

2502018, G03B 1336, G02B 728

Patent

active

051383560

ABSTRACT:
An automatic focus adjusting apparatus of a camera calculates amount of defocus of an object, and repeatedly calculates the speed of the image plane of the object based on the amount of defocus. When releasing operation of the camera is started, image plane speed of the object at the time of exposure is estimated by using a secondary curve based on the speed of the image plane, and the lens is driven based on the data thereof. Since the image plane speed of the object is estimated by using the secondary curve equation, correction of the amount of defocus can be accurately done regardless of the speed of movement of the object.

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