Patent ID: 8314872

Claim:
An image capture device comprising: an image sensor; an optical system for producing an image on an imaging area of the image sensor; and an image signal processing section for processing an electrical signal supplied from the image sensor, wherein the image sensor includes a number of units that are arranged on the imaging area, and wherein each said unit includes: a first photosensitive cell; a second photosensitive cell; a light-transmitting member, which is arranged over the first and second photosensitive cells; and a first mirror, which is arranged inside the light-transmitting member so as to face the first photosensitive cell, and wherein the first mirror reflects a light ray falling within a first wavelength range, which is included in incoming light that has impinged on the first mirror, and transmits any other light ray falling within a non-first wavelength range, which is included in the incoming light, and wherein the light ray falling within the first wavelength range, which has been reflected from the first mirror, is further reflected from an interface between the light-transmitting member and another member and then incident on the second photosensitive cell, while the light ray falling within the non-first wavelength range, which has been transmitted through the first mirror, is incident on the first photosensitive cell, and wherein the first photosensitive cell receives the light ray falling within the non-first wavelength range that has been transmitted through the first mirror, and then outputs a first pixel signal representing the intensity of the light ray received, and wherein the second photosensitive cell receives not only the light ray falling within the first wavelength range that has been reflected from the interface between the light-transmitting member and the another member but also a light ray that has been directly incident on the second photosensitive cell without passing through the first mirror, and then outputs a second pixel signal representing the intensity of the light rays received, and wherein the image signal processing section performs computation processing, including calculating the difference between the first and second pixel signals, thereby outputting information about the intensity of the light ray falling within the first wavelength range among the overall incoming light that has been received by each said unit.