COLOR FILTER ARRAY AND IMAGE SENSOR

摘要

A color filter array (21a) comprises seven or more types of color filters, including a first color filter, having different spectral sensitivity characteristics. The seven or more types of color filters are arranged in a two-dimensional form. Of the seven or more types of color filters, at least two or more types of color filters are regarded as color filters of interest. Two color filters positioned at a first interval on both sides in a first direction from the color filters of interest are the same type. Two color filters positioned at a second interval on both sides in a second direction, which differs to the first direction, from the color filters of interest are the same type. At least one type of color filter among the color filters has a higher density than the other types of color filters. This configuration enables high precision gradient information to be acquired from a multi-band color filter array.