Patent ID: 6816199
Filing Date: 2004-11-09
Classification: G02B,G03B

Abstract:
A image pick-up device comprising:a photographing lens; an image pick-up element having an image pick-up area and focus detecting area, for electronically image picking-up a light beam which has passed through said photographing lens; a microlens member disposed only on the front surface of the image pick-up area among the image pickup area and focus detecting area of said image pick-up element; a focus detecting optical system for re-forming an image on the focus detecting area on said image pick-up element by use of a light beam which is at least part of a light beam of a subject having passed through said photographing lens; an optical member for guiding the light beam which is at least part of the light beam of the subject having passed through said photographing lens towards said focus detecting optical system; and a focus detecting section for detecting the focus based on an output of said image pick-up element.