Patent ID: 9625675
Date: 2017-04-18
CPC Classifications: G02B,H01L,H04N

Claim:
1. An image sensor comprising: an image forming pixel which receives a light beam passing through an imaging pupil area of an imaging optical system; a focus detecting pixel which receives a light beam passing through a pupil area smaller than the imaging pupil area, wherein the focus detecting pixel comprises a light-blocking layer having an opening, which limits the light beam passing through the imaging pupil area, between a lens of the focus detecting pixel and a photo-electric conversion portion of the focus detecting pixel, the light-blocking layer overlaps with a portion of the photo-electric conversion portion of the focus detecting pixel to block light from reaching that portion of the photo-electric conversion portion, and a direction of eccentricity of the lens of the focus detecting pixel relative to a center of said pixel is opposite to a direction of eccentricity of a geometric center of the opening relative to a center of said pixel.