Patent ID: 8648435

Claim:
A solid-state imaging device comprising: a substrate including a plurality of light receiving sections; an optical waveguide provided above each of the plurality of light receiving sections and surrounded by a cladding layer; a color filter provided above each of the optical waveguides; and a lens provided above the color filter, the optical waveguide including a first layer having a first refractive index and a second layer being in contact with the first layer and having a second refractive index higher than the first refractive index, a lower end of the second layer being positioned lower than an upper end of the cladding layer and a lower end of the first layer being positioned higher than a lower end of the cladding layer, a thickness of the second layer being ½ or more of a thickness of the optical waveguide, and the second layer improving a total reflection effect of light guided in the optical waveguide.