Patent ID: 8681259

Claim:
A solid state image sensor having a plurality of ranging pixels, each of the ranging pixels including: a photoelectric conversion section for converting light into an electric signal; an optical waveguide including a core region and a clad region arranged at a light-receiving side of the photoelectric conversion section; and a light shielding member in the optical waveguide, wherein the optical waveguide has at least two optical waveguides including a first optical waveguide and a second optical waveguide, wherein the second optical waveguide is arranged closer to a side of the photoelectric conversion section than the first optical waveguide, in a direction extending away from the side of the photoelectric conversion section, wherein a core region of the first optical waveguide has a refractive index lower than a refractive index of a core region of the second optical waveguide, and wherein the light shielding member is arranged between the core region of the first optical waveguide and the core region of the second optical waveguide.