SUB MIRROR AND IMAGE PICK-UP APPARATUS HAVING THE SAME

摘要

PURPOSE: A sub mirror and an image pick-up apparatus having the same are provided to increase an AF region of the image pickup device by projecting the light reflected from a sub mirror to an auto focus module. CONSTITUTION: Light is reflected from a subject, and a photographing lens collects the reflected light. The light passes through the photographing lens, and a main mirror(130) allows some of the light therethrough. The main mirror reflects the rest light, and an auto focus module(150) detects the focus state of the photographing lens. A sub mirror(140) splits the transmitted light, and plural reflection areas(140a,140b,140c) are formed on the sub mirror to guide the split light to the auto focus module.