Patent ID: 8823067

Claim:
A solid-state imaging apparatus comprising: a sensor substrate that has a plurality of pixels configured to receive incident light, the plurality of pixels being arranged on an upper surface of a semiconductor substrate; a transparent layer that has a lower surface directly contacting an entirety of an upper surface of the sensor substrate; a transparent substrate that has a lower surface provided over an upper surface of the transparent layer and is configured to transmit the incident light therethrough; and an adhesive layer applied to an entire surface between the transparent substrate and the transparent layer; a diffraction grating that is provided over an entirety of an upper surface of the sensor substrate and configured to transmit the incident light therethrough, wherein the diffraction grating diffracts reflected diffraction light caused by the incident light that is incident on a pixel area in which the plurality of pixels are arranged on the upper surface of the semiconductor substrate wherein refractive indexes of the transparent layer and the adhesive layer are 1.52.