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US 10,359,315 B2Granted
Colorimetry apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTomoaki Nakai, Akihiko Uchiyama
Life of this patent
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Abstract
The colorimetry apparatus includes a light source for emitting light to a surface of a detected object, a diffraction grating for spectrally separating, for each wavelength, the light emitted from the light source and reflected by the detected object, and a line sensor including multiple pixels, for receiving the light, which is spectrally separated by the diffraction grating, for the each wavelength by the multiple pixels. The light source and the line sensor are arranged on the common substrate.
Claims22
A colorimetry apparatus comprising:
- a light emitting source configured to emit light to a surface of a detected material;
- a diffraction grating configured to disperse reflected light in which the light emitted from the light emitting source is reflected at the detected material, for each wavelength of the reflected light;
- a light receiving device including multiple pixels, the light receiving device being configured to receive the reflected light dispersed by the diffraction grating by the multiple pixels;
- a common electronic circuit substrate including a common surface on which the light emitting source and the light receiving device are mounted, and on which a first circuit for controlling a light emitted from the light emitting source, and a second circuit for processing a signal output from the light receiving device are mounted;
- and
- a housing that is a different member from the common electronic circuit substrate,
- wherein the light emitting source, the diffraction grating, the light receiving device, and the common electronic circuit substrate are provided inside the housing,
- wherein the light emitted from the light emitting source passes through an opening to an outside of the housing, the opening being provided on a surface of the housing at a position opposing to the detected material, and
- wherein the reflected light reflected at the detected material passes through the opening into the housing.
6 more elements
A colorimetry apparatus comprising:
- a light emitting source configured to emit light to a surface of a detected material;
- a diffraction grating configured to disperse reflected light in which the light emitted from the light emitting source is reflected at the detected material, for each wavelength of the reflected light;
- a light receiving device including multiple pixels, the light receiving device being configured to receive the reflected light dispersed by the diffraction grating by the multiple pixels;
- a common electronic circuit substrate including a common surface on which the light emitting source and the light receiving device are mounted, and on which a first circuit for controlling a light emitted from the light emitting source, and a second circuit for processing a signal output from the light receiving device are mounted;
- and
- a housing that is a different member from the common electronic circuit substrate,
- wherein the light emitting source, the diffraction grating, and the light receiving device are provided inside the housing,
- wherein the light emitted from the light emitting source passes through an opening to an outside of the housing, the opening being provided on a surface of the housing at a position opposing to the detected material, and
- wherein the reflected light reflected at the detected material passes through the opening into the housing.
6 more elements
Dependencies are inferred from the claim text.