Lighting devices and methods for lighting
First Claim
1. A lighting device, comprising:
- at least first and second groups of solid state light emitters, said first group of solid state light emitters including at least one first group solid state light emitter, said second group of solid state light emitters including at least one second group solid state light emitter, each of said second group of solid state light emitters emits light having a dominant wavelength in the range of from about 600 nm to about 630 nm; and
circuitry configured to adjust only a current applied to said second group of solid state light emitters based on temperature of at least one of said second group of solid state light emitters.
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Accused Products
Abstract
A lighting device comprises groups of solid state light emitters, a sensor and circuitry. If the emitters are illuminated, the sensor is exposed to combined light from the groups, and senses only a portion of the combined light. The circuitry adjusts current applied to at least one of the emitters based on an intensity of the light sensed. Also, a device comprising emitters, a circuit board and a sensor, at least one of the emitters being positioned on the first circuit board and the sensor being spaced from the circuit board. Also, a lighting device comprising emitters, a sensor, and circuitry which adjusts current applied an emitters based on detection by the first sensor, the circuitry comprising a differential amplifier circuit. Also, a lighting device, comprising light emitters and circuitry which adjusts current applied to only some of the emitters based on ambient temperature. Also, methods of lighting.
92 Citations
20 Claims
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1. A lighting device, comprising:
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at least first and second groups of solid state light emitters, said first group of solid state light emitters including at least one first group solid state light emitter, said second group of solid state light emitters including at least one second group solid state light emitter, each of said second group of solid state light emitters emits light having a dominant wavelength in the range of from about 600 nm to about 630 nm; and circuitry configured to adjust only a current applied to said second group of solid state light emitters based on temperature of at least one of said second group of solid state light emitters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A lighting device, comprising:
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at least first and second solid state light emitters; and circuitry configured (1) to adjust a current applied to at least said second solid state light emitter based on a sensed temperature, and (2) to not adjust a current applied to said first solid state light emitter based on said sensed temperature, said second solid state light emitter emits light having a dominant wavelength in the range of from about 600 nm to about 630 nm. - View Dependent Claims (13, 14)
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15. A lighting device, comprising:
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circuitry configured to adjust only a current applied to fewer than all of at least two solid state light emitters based on a sensed temperature, each of said fewer than all solid state light emitters emits light having a dominant wavelength in the range of from about 600 nm to about 630 nm. - View Dependent Claims (16)
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17. A method of lighting, comprising:
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illuminating at least first and second groups of solid state light emitters, said first group of solid state light emitters including at least one first group solid state light emitter, said second group of solid state light emitters including at least one second group solid state light emitter, each of said second group of solid state light emitters emitting light having a dominant wavelength in the range of from about 600 nm to about 630 nm; and adjusting only a current applied to said second group of solid state light emitters based on a sensed temperature. - View Dependent Claims (18, 19, 20)
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Specification