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US 10,897,562 B2Granted
Imaging device including a plurality of light emitting elements
AssigneeCanon Kabushiki Kaisha
InventorTatsuya Watanabe
Life of this patent
Estimating the term…
Abstract
An imaging device includes, an element installation plane configured to install light emitting elements in a plane perpendicular to an optical axis. The element installation plane includes a first installation position relatively long in distance from an optical axis of a lens unit and a second installation position relatively short in distance therefrom. At least one of the light emitting elements is installed at the second installation position.
Claims15
An imaging device comprising:
- a lens unit;
- an imaging unit configured to convert light with which an image is formed by the lens unit into an image signal;
- a housing configured to house the lens unit and the imaging unit and having a rectangular shape as viewed in a direction of an optical axis of the lens unit;
- a pair of first light emitting elements arranged diagonally across the lens unit at positions corresponding to corners of the housing respectively;
- and
- a second light emitting element and a third light emitting element arranged diagonally across the lens unit at positions corresponding to different corners of the housing respectively, said different corners being different from the corners where the first light emitting elements are arranged;
- wherein the pair of first light emitting elements have a light distribution angle smaller than that of the second light emitting element and that of the third light emitting element;
- and
- wherein the second light emitting element has a light distribution angle smaller than that of the third light emitting element.
6 more elements
An imaging device comprising:
- a lens unit;
- an imaging unit configured to convert light with which an image is formed by the lens unit into an image signal;
- a housing configured to house the lens unit and the imaging unit and having a rectangular shape as viewed in a direction of an optical axis of the lens unit;
- a pair of first light emitting elements arranged diagonally across the lens unit at positions corresponding to corners of the housing respectively;
- and
- a second light emitting element and a third light emitting element arranged diagonally across the lens unit at positions corresponding to different corners of the housing respectively, said different corners being different from the corners where the first light emitting elements are arranged;
- and
- a control unit configured to control power supply to the pair of first light emitting elements, the second light emitting element, and the third light emitting element;
- wherein the control unit performs control to supply power exclusively such that one of the pair of first light emitting elements, the second light emitting element, and the third light emitting element is turned on.
6 more elements
An imaging device comprising:
- a lens unit;
- a first light emitting element;
- a second light emitting element to which power is supplied in such a way as to be turned on simultaneously with the first light emitting element;
- a third light emitting element to which power is supplied in such a way as to be turned on simultaneously with the first light emitting element and the second light emitting element;
- a fourth light emitting element to which power is supplied in such a way as to be turned on at different timing from the first light emitting element, the second light emitting element, and the third light emitting element;
- and
- a fifth light emitting element to which power is supplied in such a way as to be turned on at different timing from the first light emitting element, the second light emitting element, the third light emitting element, and the fourth light emitting element;
- wherein the first light emitting element, the second light emitting element, and the third light emitting element are arranged at substantially equal intervals at rotationally symmetric positions around a center of an optical axis of the lens unit,
- wherein the fourth light emitting element is arranged between the first light emitting element and the second light emitting element, and
- wherein the fifth light emitting element is arranged between the second light emitting element and the third light emitting element.
7 more elements
An imaging device comprising:
- a lens unit;
- an imaging unit configured to convert light with which an image is formed by the lens unit into an image signal;
- a housing configured to house the lens unit and the imaging unit and having a rectangular shape as viewed in a direction of an optical axis of the lens unit;
- a pair of first light emitters arranged diagonally across the lens unit at positions corresponding to corners of the housing respectively;
- and
- a second light emitter and a third light emitter arranged diagonally across the lens unit at positions corresponding to different corners of the housing respectively, said different corners being different from the corners where the first light emitters are arranged;
- wherein the pair of first light emitters have a light distribution angle smaller than that of the second light emitter and that of the third light emitter;
- and
- wherein the second light emitter has a light distribution angle smaller than that of that of the third light emitter.
6 more elements
An imaging device comprising:
- a lens unit;
- an imaging unit configured to convert light with which an image is formed by the lens unit into an image signal;
- a housing configured to house the lens unit and the imaging unit and having a rectangular shape as viewed in a direction of an optical axis of the lens unit;
- a pair of first light emitters arranged diagonally across the lens unit at positions corresponding to corners of the housing respectively;
- a second light emitter and a third light emitter arranged diagonally across the lens unit at positions corresponding to different corners of the housing respectively, said different corners being different from the corners where the first light emitters are arranged;
- and
- a control unit configured to control power supply to the first light emitters, the second light emitter, and the third light emitter;
- wherein the control unit performs control to supply power exclusively such that one of the pair of first light emitters, the second light emitter, and the third light emitter is turned on.
5 more elements
An imaging device comprising:
- a lens unit;
- an imaging unit configured to convert light with which an image is formed by the lens unit into an image signal;
- a housing configured to house the lens unit and the imaging unit and having a rectangular shape as viewed in a direction of an optical axis of the lens unit;
- a pair of first light emitting elements arranged diagonally across the lens unit at positions corresponding to corners of the housing respectively and configured to adjust a first light distribution angle;
- a second light emitting element and a third light emitting element arranged diagonally across the lens unit at positions corresponding to different corners of the housing respectively, said different corners being different from the corners where the first light emitting elements are arranged, the second light emitting element being configured to adjust a second light distribution angle and the third light emitting element being configured to adjust a third light distribution angle;
- wherein the pair of first light emitting elements adjust the first light distribution angle so that the first light distribution angle of the pair of first light emitting elements is smaller than the second light distribution angle of the second light emitting element and the third light distribution angle of the third light emitting element;
- and
- wherein the second light emitting element adjusts the second light distribution angle so that the second light distribution angle of second light emitting element is smaller than the third light distribution angle of the third light emitting element.
5 more elements
Dependencies are inferred from the claim text.