Photoluminescent color changing dome map lamp
First Claim
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1. A lighting device for a vehicle comprising:
- a single color light source configured to emit a first emission in a first color in a blue spectral range and in communication with a controller, the first color configured to excite a photoluminescent portion to emit a white colored light, wherein the controller is operable to adjust an output color of a second emission output from the photoluminescent portion by adjusting a forward driving current and a duty cycle of the single color light source, such that an intensity of the first emission exceeds a conversion capacity of the photoluminescent portion.
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Abstract
A lighting device for a vehicle is disclosed. The lighting device comprises at least one light source in communication with a controller. The light source is configured to emit a first emission to excite a photoluminescent portion. The controller is operable to adjust an output color of an emitted light from the lighting device by adjusting an intensity of light output from the at least one light source.
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Citations
19 Claims
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1. A lighting device for a vehicle comprising:
a single color light source configured to emit a first emission in a first color in a blue spectral range and in communication with a controller, the first color configured to excite a photoluminescent portion to emit a white colored light, wherein the controller is operable to adjust an output color of a second emission output from the photoluminescent portion by adjusting a forward driving current and a duty cycle of the single color light source, such that an intensity of the first emission exceeds a conversion capacity of the photoluminescent portion. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A lighting device for a vehicle comprising:
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a single color light source configured to emit a first emission in a blue color; an optic device comprising a photoluminescent portion configured to convert at least a portion of the first emission to a second emission in a substantially white color; a diffusing optic comprising an annular ring disposed around a perimeter of the optic device; and a controller configured to adjust a color of the second emission by selectively adjusting an intensity of the first emission. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A lighting device for a vehicle, comprising:
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a light source in communication with a controller and configured to emit a first emission; an optic device comprising a photoluminescent portion configured to convert at least a portion of the first emission to a second emission; and an annular diffusing optic disposed around the optic device, wherein the optic device is configured to transmit the second emission into the diffusing optic, wherein the controller is configured to; control the first emission at a first intensity to output the second emission in a dome light configuration corresponding to a first color; and control the first emission at a second intensity to output the second emission in a reading light configuration corresponding to a second color, wherein the change from the first color to the second color is in response to the second intensity exceeding a conversion capacity of the photoluminescent portion. - View Dependent Claims (17, 18, 19)
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Specification