Patent ID: 8704942
Filing Date: 2014-04-22
Classification: G02B,G03B,H04N

Abstract:
1. An imaging device having an image generation pixel and a phase difference detection pixel, in which the phase difference detection pixel comprises: a micro lens that collects light from a subject; a light sensing element that generates a signal for performing focusing determination through phase difference detection by sensing subject light collected by the micro lens; a first light blocking unit that performs pupil division by blocking a portion of the subject light; and a second light blocking unit that is disposed between the first light blocking unit and the micro lens, and blocks the portion of the subject light which is incident to the first light blocking unit, said second light blocking unit having an aperture area which lies in an aperture plane which is parallel to a horizontal vertical plane having a horizontal axis and a vertical axis associated with said phase difference detection pixel, each side of at least one pair of opposite sides of the aperture area of the second light blocking unit protrudes closer in an orthogonal direction to an axis in the aperture plane which is parallel to an axis which passes through a center of the light sensing element and lies in a plane parallel to the horizontal vertical plane, as compared to corresponding sides of an aperture area of the image generation pixel, and the aperture area of the second light blocking unit is smaller than the aperture area of the image generation pixel.