Patent ID: 9420159
Filing Date: 2016-08-16
CPC Classification: G02B,G03B,H04N

Claim Text:
1. A digital photographing apparatus comprising: an image pickup lens that transmits light from a subject; an image pickup device that captures light transmitted through the image pickup lens to generate an image signal; an iris that controls an amount of the light transmitted through the image pickup lens; a shutter that controls exposure of the image pickup device; a focus detector that detects a focus using light transmitted through a predetermined exit pupil region of the image pickup lens; and a timing unit that controls a time for closing and/or opening the shutter, when the image pickup device outputs image information, wherein: the focus detector detects a focus when the iris has an iris value for ensuring transmission of a light flux used to detect the focus, after the exposure of the image pickup device is finished; the focus detector comprises a phase difference detecting pixel that detects a phase difference of the image pickup device, and the focus is detected using an image plane phase difference autofocus (AF) method that uses light received by the phase difference detecting pixel; the focus is detected after the iris value reaches a maximum-opening iris value of the image pickup lens; and wherein light is received to detect a focus when the shutter is opened, a focus detection calculation is performed when the shutter is opened, and a focus lens is driven at a time when the shutter is closed.