Mixed color leds for auto vanity mirrors and other applications where color differentiation is critical
First Claim
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1. A color-controllable light emitting array comprising:
- a plurality of LEDs, each emitting light of a different color;
a diffuser positioned in the path of the light output of the LEDs that blends the light incident thereon so that light emitted by the diffuser is an additive combination of the light emitted by the LEDs; and
an adjustable current control unit that provides separately adjustable current to drive each of the LEDs, the color balance of the light emitted by the diffuser being determined by the relative levels of the current which drives the individual LEDs.
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Abstract
A light emitting array comprised of a plurality of light emitting diodes of different colors. One LED is a blue or near ultraviolet LED coated with a phosphor that can be excited to emit a yellowish light. A second diode emits red light. Individual control of the drive current for the LEDs permits controlling the color balance of the light emitted by the array to closely approximate natural sunlight or to emphasize another spectral compliment. In an alternative version, the LED array comprises a red diode, a blue diode, and a green diode. Also disclosed is an automobile sun visor mounted vanity mirror illuminated by the new LED array.
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Citations
27 Claims
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1. A color-controllable light emitting array comprising:
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a plurality of LEDs, each emitting light of a different color;
a diffuser positioned in the path of the light output of the LEDs that blends the light incident thereon so that light emitted by the diffuser is an additive combination of the light emitted by the LEDs; and
an adjustable current control unit that provides separately adjustable current to drive each of the LEDs, the color balance of the light emitted by the diffuser being determined by the relative levels of the current which drives the individual LEDs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An illuminated mirror comprising:
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a body portion;
a reflective element mounted on the body portion;
at least one light emitting array, the light emitting array including;
a plurality of LEDs, each emitting light of a different color;
a diffuser positioned in the path of the light output of the LEDs that blends the light incident thereon so that light emitted by the diffuser is an additive combination of the light emitted by the LEDs; and
a current supply that provides current to drive the LEDs, the color balance of the light emitted by the diffuser being determined by the relative levels of the current which drives the individual LEDs. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification