Lighting devices with discrete lumiphor-bearing regions on remote surfaces thereof
AssigneeCree, Inc.
InventorsAntony P. van de Ven, Gerald H. Negley
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Abstract
A lighting device includes a semiconductor light emitting device (LED) configured to emit light having a first peak wavelength upon the application of a voltage thereto, an element in adjacent, spaced-apart relationship with the LED, and a pattern of discrete lumiphor-containing regions on a surface of, or within, the element. The lumiphor-containing regions are configured to receive light emitted by the LED and convert at least a portion of the received light to light having a longer wavelength than the first peak wavelength. The remote element may be a lens, a reflective element, or a combination thereof.
Claims28
A lighting device, comprising:
- a semiconductor light emitting device (LED) configured to emit light having a first peak wavelength upon the application of a voltage thereto;
- an element in adjacent, spaced-apart relationship with the LED;
- and
- a pattern of discrete lumiphor-containing regions on a surface of the element, wherein the lumiphor-containing regions are configured to receive light emitted by the LED and to convert at least a portion of the received light to light having a longer wavelength than the first peak wavelength.
A lighting device, comprising:
- a semiconductor light emitting device (LED) configured to emit light having a first peak wavelength upon the application of a voltage thereto;
- a lens in adjacent, spaced-apart relationship with the LED;
- and
- a pattern of discrete lumiphor-containing regions on a surface of the lens, wherein the pattern of discrete lumiphor-containing regions comprises a plurality of first and second lumiphor-containing regions, wherein the first lumiphor-containing region is configured to convert light emitted by the LED to light having a second peak wavelength and the second lumiphor-containing region is configured to convert light emitted by the LED to light having a third peak wavelength, shorter than the second peak wavelength.
A lighting device, comprising:
- a semiconductor light emitting device (LED) configured to emit light having a first peak wavelength upon the application of a voltage thereto;
- a reflective element in adjacent, spaced-apart relationship with the LED;
- and
- a pattern of discrete lumiphor-containing regions on a surface of the reflective element, wherein the pattern of discrete lumiphor-containing regions comprises a plurality of first and second lumiphor-containing regions, wherein the first lumiphor-containing region is configured to convert light emitted by the LED to light having a second peak wavelength and the second lumiphor-containing region is configured to convert light emitted by the LED to light having a third peak wavelength, shorter than the second peak wavelength.
A lighting device, comprising:
- a semiconductor light emitting device (LED) configured to emit light having a first peak wavelength upon the application of a voltage thereto;
- an element in adjacent, spaced-apart relationship with the LED;
- and
- a pattern of discrete lumiphor-containing regions within the element, wherein the lumiphor-containing regions are configured to receive light emitted by the LED and to convert at least a portion of the received light to light having a longer wavelength than the first peak wavelength.
Dependencies are inferred from the claim text.