Patent ID: 7053350
Filing Date: 2006-05-30
Classification: G02B,H01L

Abstract:
1. An autofocus control apparatus in an image sensing apparatus that comprises: an optical system including a focus lens; an image sensing unit that photoelectrically converts light incident via said optical system into image signals and outputs the image signals; and a drive unit that drives said focus lens to adjust a focus position, said autofocus control apparatus comprising: a floodlighting unit; and a focus position detector that performs focus position detection according to an active system and focus position detection according to a passive system on the basis of the image signals obtained from said image sensing unit, wherein said focus position detector, at the time of focus position detection according to the active system, acquires first image signals with said image sensing unit performing floodlighting with said floodlighting unit, acquires second image signals with said image sensing unit without performing the floodlighting with said floodlighting unit, and detects a focus position on the basis of differential signals between the first image signals and the second image signals, and wherein the first image signals are of a predetermined one row or one column of said image sensing unit, and the differential signals are of the one row or one column.