Projector and image pickup apparatus
First Claim
Patent Images
1. A projector comprising:
- a first plurality of light sources of a first wavelength;
a second light source of a second wavelength,wherein the first wavelength and the second wavelength are different;
wherein the first plurality of light sources and the second light source are disposed in a vehicle compartment in such positions that light of the first wavelength and light of the second wavelength projected therefrom forming a color mixture before reaching an observer;
a camera for capturing at least a portion of the projected light reflected by a face of a driver of the vehicle; and
a control means for controlling the first plurality of light sources and the second light source in conjunction with a shutter of the camera;
wherein the control means controls the amount of light emitted through the first plurality of light sources and the second light source based on the condition of a driver on a light source-by-light source basis to thereby adjust the color mixture.
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Abstract
Light generated at a specific wavelength corresponding to a particular color or color range that is distracting or disruptive to a driver during a normal operation is blocked through an inexpensive construction without blocking light in a required range of wavelengths. A projector is constructed such that a plurality of LEDs are arranged in an array configuration. The LEDs can include a tinge of red reduction LED and near-infrared LEDs. The projector can be installed in a vehicle and disposed in proximity to the camera. In some embodiments, the projector can be controlled by a control circuit to be turned on in conjunction with the shutter of a camera.
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Citations
18 Claims
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1. A projector comprising:
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a first plurality of light sources of a first wavelength; a second light source of a second wavelength, wherein the first wavelength and the second wavelength are different; wherein the first plurality of light sources and the second light source are disposed in a vehicle compartment in such positions that light of the first wavelength and light of the second wavelength projected therefrom forming a color mixture before reaching an observer; a camera for capturing at least a portion of the projected light reflected by a face of a driver of the vehicle; and a control means for controlling the first plurality of light sources and the second light source in conjunction with a shutter of the camera; wherein the control means controls the amount of light emitted through the first plurality of light sources and the second light source based on the condition of a driver on a light source-by-light source basis to thereby adjust the color mixture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A projector projecting light of a first wavelength and a second wavelength different from the first wavelength, the projector disposed in a vehicle compartment in such a position that a first wavelength and a second wavelength form a color mixture before reaching an observer, the projector comprising:
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a first plurality of light sources projecting light of the first wavelength and a second light source projecting light of the second wavelength; a control means for controlling the amount of light emitted through the first plurality of light sources and the second light source on a light source-by-light source basis, wherein the first wavelength includes a visible near-infrared wavelength, and wherein the control means controls the amounts of the currents such an output power of the second light source at startup is higher than the first plurality of light sources; a camera for capturing at least a portion of the projected light reflected by a face of a driver of the vehicle; and a control means for controlling the first plurality of light sources and the second light source in conjunction with a shutter of the camera; wherein the control means controls the amount of light emitted through the first plurality of light sources and the second light source based on the condition of a driver on a light source-by-light source basis to thereby adjust the color mixture. - View Dependent Claims (12)
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13. A projector projecting light of a first wavelength and a second wavelength different from the first wavelength such that the first wavelength and the second wavelength form a color mixture before reaching an observer, the projector comprising:
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a plurality of tight sources disposed in a vehicle compartment projecting the light of the first wavelength and the second wavelength forming the color mixture; a control means for controlling the amount of light emitted through the plurality of light sources on a light source-by-light source basis, wherein the first wavelength includes visible near-infrared wavelength and the second wavelength is set to a predetermined output level higher than an output level of the first wavelength at startup, and wherein the controlling means controls the amount of light emitted through ones of the plurality of light sources associated with the second wavelength based to the predetermined output level; a camera for capturing at least a portion of the projected light reflected by a face of a driver of the vehicle; and a control means for controlling the plurality of light sources in conjunction with a shutter of the camera; wherein the control means controls the amount of light emitted through the first plurality of light sources and the second light source based on the condition of a driver on a light source-by-light source basis to thereby adjust the color mixture. - View Dependent Claims (14)
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15. A projector projecting light of a first wavelength and a second wavelength different from the first wavelength such that the first wavelength and the second wavelength form a color mixture before reaching an observer, the projector comprising:
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a plurality of light sources disposed in a vehicle compartment projecting the light of the first wavelength and the second wavelength forming the color mixture; a control means for controlling amount of light emitted through the plurality of light sources on a light source-by-light source basis, wherein the first wavelength includes visible near-infrared wavelength, and wherein the control means controls the amount of light emitted through ones of the plurality of light sources associated with the second wavelength so as to increase after startup of the projector; a camera for capturing at least a portion of the projected light reflected by a face of a driver of the vehicle; and a control means for controlling the plurality of light sources in conjunction with a shutter of the camera; wherein the control means controls the amount of light emitted through the first plurality of light sources and the second light source based on the condition of a driver on a light source-by-light source basis to thereby adjust the color mixture. - View Dependent Claims (16, 17, 18)
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Specification