Automatic focus sensing device

Details Automatic focus sensing device Automatic focus sensing device

1997-01-16

2000-07-25

Garber, Wendy

Television

Camera, system and detail

Optics

348345, 348349, G03B 1300

Patent

active

060942231

ABSTRACT:
An automatic focus sensing device senses an in-focus position by using a high-frequency component in an image signal to step drive an imaging lens in the direction of the optical axis of the imaging lens while the image signal is being read in succession to the photoelectrical conversion and then integration of the light of an object incident on an image pickup device. The device generates, in non-synchronization with and independently of an image synchronization signal, a driving pulse fed to an imaging lens driving device for driving the imaging lens.

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NHK Technical Journal 86 Vo. 17, No. 1, 1965, p. 25.

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