Solid-state imaging device

摘要

The solid-state imaging device includes light collecting elements each of which includes a first light-transmissive film group and a second light transmissive film group adjacent to each other. The first light-transmissive film group and the second light transmissive film group have mutually different effective refractive index distributions for guiding at least two types of incident light rays to the light receiving element.

主权项

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.