Fujifilm Corporation

Takehiro Kouguchi

Tomoyuki Kawai

Seiji Tanaka

Hisashi Endo

Tetsuro Ashida

Tomoki Inoue

Noriko Kawamura

Kousuke Takahashi

An imaging apparatus includes a solid-state imaging device that has a plurality of pairs of a first photoelectric conversion element and a second photoelectric conversion element, which have different spectral sensitivity characteristics, respectively. A wavelength range where the first photoelectric conversion element of each pair mainly has a spectral sensitivity and a wavelength range where the second photoelectric conversion element of the pair mainly has a spectral sensitivity fall within wavelength ranges of specific colors of visible light respectively. The plurality of pairs include a plurality of types of pairs having different specific colors. A half-width in a spectral sensitivity characteristic of the second photoelectric conversion element of each pair is wider than a half width in a spectral sensitivity characteristic of the first photoelectric conversion element of the pair.

Imaging apparatus and imaging method

A solid-state imaging device includes a plurality of pairs of a first photoelectric conversion element and a second photoelectric conversion element which have different spectral sensitivity characteristics. A wavelength range where the first photoelectric conversion element of each pair mainly has a spectral sensitivity and a wavelength range where the second photoelectric conversion element of each pair mainly has a spectral sensitivity respectively fall within a wavelength ranges of specific colors of visible light. The plurality of pairs include a plurality of types of pairs having different specific colors of visible light. The half width in the spectral sensitivity characteristic of the first photoelectric conversion element of the each pair is wider than a half width in the spectral sensitivity characteristic of the second photoelectric conversion element of the each corresponding pair.

Solid-state imaging device and imaging apparatus

A WB gain calculation unitdetermines a light source of a Surface A on the basis of color distribution of the Surface A and a black body locus AD, determines a light source of a Surface B on the basis of color distribution of the Surface B and a black body locus BD and determines a light source of a Surface AB on the basis of color distribution of the Surface AB and a block body locus ABD and calculates the white balance gains on the basis of the determined light sources.

Imaging apparatus and method of calculating white balance gain

An imaging apparatus includes a solid-state imaging device and a driving unit. The solid-state imaging device has a plurality of pairs of first and second photoelectric conversion elements having different spectral sensitivity characteristics. The driving unit independently controls an exposure time of a first group of the plurality of first photoelectric conversion elements and an exposure time of a second group of the plurality of second photoelectric conversion elements. A wavelength range where the first photoelectric conversion element of each pair mainly has a spectral sensitivity and a wavelength range where the second photoelectric conversion element of each pair mainly has spectral sensitivity fall within the respective wavelength ranges of specific colors of visible light. A half width in the spectral sensitivity characteristic of each first photoelectric conversion element is wider than a half width in the spectral sensitivity characteristic of each second photoelectric conversion element of the pair.

Imaging apparatus and method of driving solid-state imaging device

Two kinds of color images, obtained by a solid-state imaging device, having different color tones are combined with each other. A first captured color image due to a first pixel group (pixels in which spectral sensitivities of color filters are wide) of the solid-state imaging device is processed. A second captured color image due to a second pixel group (pixels in which spectral sensitivities of color filters are narrow) is processed. The level difference between captured image signals of the pixels of the first pixel group and captured image signals of the pixels of the second pixel group, and due to the spectral sensitivity difference between the color filters in which the spectral sensitivities are wide and narrow is obtained (steps Sand S). The level difference is corrected. The first captured color image and the second captured color image are combined with each other.

Growing community of inventors

Saitama, Japan

Takehiro Kouguchi