Patent ID: 8872091
Filing Date: 2014-10-28
Classification: G02B,H01L,H04N

Abstract:
1. A solid-state imaging device comprising: a plurality of unit pixels arranged two-dimensionally in an imaging region, and each of the plurality of unit pixels including: a light receiving element; and a light collecting element for guiding incident light to the light receiving element, wherein the plurality of unit pixels includes a first unit pixel disposed at a corner part of the imaging region and having a first light collecting element, the first light collecting element includes a first light-transmissive film group and a second light-transmissive film group arranged adjacent to each other, each of the first light-transmissive film group and the second light-transmissive film group includes a plurality of light-transmissive films each of which has a shape of an arc concentric about a center axis perpendicular to the imaging region, the first light-transmissive film group and the second light-transmissive film group have mutually different effective refractive index distributions, the first light-transmissive film group and the second light-transmissive film group share a first boundary which is a straight line, the first boundary is orthogonal to a line which connects a center point of the imaging region and a center point of the first unit pixel, the first light-transmissive film group is closer to the center point of the imaging region than the second light-transmissive film group, and the second light-transmissive film group has a light refractive index higher than a light refractive index of the first light-transmissive film group.