Color filter array and image sensor

摘要

The color filter array 21a comprises seven or more types of color filters including a first color filter. The seven or more types color filters have different spectral sensitivity characteristics. The seven or more types of color filters are arranged in a two-dimensional form. Among the seven or more types of color filters, at least two types of color filters are designated as a color filter of interest. Two color filters arranged at a first interval on both sides of the color filter of interest along a first direction are of the same type. Two color filters arranged at a second interval on both sides of the color filter of interest along a second direction that is different from the first direction are of the same type. Among the color filters, at least one type of color filter have a density higher than that of the other types of color filters, thereby realizing acquisition of highly accurate gradient information from a multiband color filter array.

主权项

1. A color filter array comprising seven or more types of color filters including a first color filter, the color filters having different spectral sensitivity characteristics, the color filters being arranged in a two dimensional form, wherein
in a color filter of interest, which is at least two or more types of color filters among the seven or more types of color filters, two of the color filters arranged at a first interval on both sides of the color filter of interest along a first direction are of the same type, and two of the color filters arranged at a second interval on both sides of the color filter of interest along a second direction which is different from the first direction are of the same type; and among the color filters, at least one type of color filters have a density higher than that of the other types of color filters.