Patent ID: 7852388

Claim:
An imaging device comprising an image sensor having a plurality of unit pixels arranged on a chip, the imaging sensor comprising, for each unit pixel: a photoelectric conversion element for photoelectrically converting incident light; and a filter placed above the photoelectric conversion element for selectively transmitting only wavelengths of part of the incident light; wherein the filters are multilayer filters formed of an inorganic material, the filters consist of four types of filters which include a red filter for selectively transmitting a wavelength band belonging to red, a green filter for selectively transmitting a wavelength band belonging to green, and first and second blue filters for selectively transmitting a wavelength band belonging to blue, transmission peak wavelengths of the first and second blue filters being different from each other, the difference in transmission peak wavelength between the first and second blue filters is 10 nm or more and less than 80 nm, and on the image sensor, the number of the red filters is equal to the total number of the first and second blue filters; the number of the red filters is less than the number of green filters; and the total number of the first and second blue filters is less than the number of the green filters.