Lighting device
First Claim
1. A lighting device comprising:
- at least one solid state light emitter; and
at least one luminescent element,the luminescent element comprising particles of at least a first luminescent material,the luminescent element spaced from the solid state light emitter,a content of luminescent material in the luminescent element not greater than about 15% by volume,the particles of the first luminescent material having an average particle size of not greater than 50 microns, anda thickness of the luminescent element not greater than 1 cm.
2 Assignments
0 Petitions
Accused Products
Abstract
A lighting device comprising at least one solid state light emitter and at least one luminescent element spaced from the light emitter, a surface of the luminescent element being at least twice as large as the illumination surface of the light emitter. Also, a lighting device comprising at least one solid state light emitter and at least one luminescent element spaced from the light emitter, a surface of the luminescent element surface being at least twice as large as and substantially parallel to the illumination surface of the light emitter. Also, a lighting device comprising at least one solid state light emitter and at least one luminescent element spaced from the light emitter, a surface area of a projection of the luminescent element being at least twice as large as a surface area of a projection of the light emitter.
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Citations
20 Claims
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1. A lighting device comprising:
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at least one solid state light emitter; and at least one luminescent element, the luminescent element comprising particles of at least a first luminescent material, the luminescent element spaced from the solid state light emitter, a content of luminescent material in the luminescent element not greater than about 15% by volume, the particles of the first luminescent material having an average particle size of not greater than 50 microns, and a thickness of the luminescent element not greater than 1 cm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A lighting device comprising:
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at least one solid state light emitter; and at least one luminescent clement, the luminescent element comprising at least one luminescent material, a content of the luminescent material in the luminescent element not greater than about 15% by volume, the first luminescent material comprising particles having an average particle size of not greater than 50 microns, the luminescent element spaced from the solid state light emitter, the solid state light emitter having an illumination surface, and the luminescent element having a luminescent element surface, and the luminescent element surface at least twice as large as the illumination surface. - View Dependent Claims (17, 18, 19, 20)
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Specification