Patent ID: 8860855

Claim:
A solid-state image sensor comprising a photosensitive cell array in which a number of unit blocks are arranged two-dimensionally, each said unit block including first, second, third and fourth photosensitive cells, and a dispersing element array that is arranged so as to face the photosensitive cell array and that includes a plurality of dispersing elements, wherein light that would be directly incident on each said photosensitive cell, were it not for the dispersing element array, is called that photosensitive cell's entering light and visible radiation included in the cell's entering light is comprised of first, second and third color components and the rest of the visible radiation, which is made up of color components other than a particular one of the color components, is called a complementary color ray of that particular color component, the dispersing element array is configured to make light that is obtained by subtracting a complementary color ray of the first color component from the first photosensitive cell's entering light and adding a light ray with the first color component to the remainder incident on the first photosensitive cell, and make light that is obtained by subtracting the light ray with the first color component from the second photosensitive cell's entering light and adding the complementary color ray of the first color component to the remainder incident on the second photosensitive cell, and make light that is obtained by subtracting a light ray with the third color component from the third photosensitive cell's entering light and adding a complementary color ray of the third color component to the remainder incident on the third photosensitive cell, and make light that is obtained by subtracting the complementary color ray of the third color component from the fourth photosensitive cell's entering light and adding the light ray with the third color component to the remainder incident on the fourth photosensitive cell.