Patent ID: 7499096
Filing Date: 2009-03-03
Classification: H04N

Abstract:
1. An autofocus adjustment device, comprising: a distance-measuring device which measures a distance from an object; an image pickup device which converts an optical image of the object taken in through an image pickup lens to an image signal; a focus adjustment device of a contrast system which adjusts a focus position of the image pickup lens using a high frequency component of the image signal outputted from the image pickup device; an automatic exposure operation device which activates automatic exposure operation; and a control device which acquires distance-measuring output by periodically activating the distance-measuring device ahead of input of an image pickup start command, activates the automatic exposure operation by the automatic exposure operation device, and controls focus adjustment in the contrast system using the acquired distance-measuring output and an image signal on which an automatic exposure operation has been performed upon reception of the image pickup start command, wherein the image pickup lens is driven according to a measurement result of the distance-measuring device, and then the focus adjustment of a contrast system is performed according to an image signal outputted from the image pickup device.