LED lamp with refracting optic element
First Claim
Patent Images
1. A LED lamp comprising:
- at least two LEDs providing light of at least two different spectral outputs; and
an optic element comprising a refracting entry surface disposed to receive the light from the at least two LEDs, the refracting entry surface comprising a plurality of refracting surfaces wherein the plurality of refracting surfaces comprise a plurality of convex refracting surfaces alternating with a plurality of concave refracting surfaces, the refracting entry surface refracting the light tangentially.
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Abstract
A LED lamp has at least two LEDs to provide light of at least two different spectral outputs. An optic element has an entry surface disposed to receive the light from the LEDs. The entry surface includes refracting surfaces that refract the light tangentially. The refracting surfaces may extend radially relative to a center of the entry surface. The refracting surfaces may be continuously curved in cross-section where the refracting surfaces may include convex refracting surfaces and concave refracting surfaces.
88 Citations
21 Claims
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1. A LED lamp comprising:
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at least two LEDs providing light of at least two different spectral outputs; and an optic element comprising a refracting entry surface disposed to receive the light from the at least two LEDs, the refracting entry surface comprising a plurality of refracting surfaces wherein the plurality of refracting surfaces comprise a plurality of convex refracting surfaces alternating with a plurality of concave refracting surfaces, the refracting entry surface refracting the light tangentially. - View Dependent Claims (3, 4, 6, 8, 9, 10, 11)
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2. A LED lamp comprising:
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at least two LEDs providing light of at least two different spectral outputs; and an optic element comprising a refracting entry surface disposed to receive the light from the at least two LEDs, wherein the optic element comprises a diffusive outer portion generating back light, the refracting entry surface refracting the light tangentially. - View Dependent Claims (5, 7, 14)
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12. A LED lamp comprising:
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a plurality of LEDs to provide light of at least two different spectral outputs disposed about a longitudinal axis; and an optic element comprising an entry surface disposed to receive the light from the plurality of LEDs, the entry surface comprising refracting surfaces that refract the light tangentially relative to the longitudinal axis wherein the refracting surfaces comprise a plurality of convex refracting surfaces and a plurality of concave refracting surfaces defining a sinusoidal line as the entry surface is traversed at a given radius. - View Dependent Claims (13, 15)
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16. A LED lamp comprising:
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at least two LEDs providing light of at least two different spectral outputs; and an optic element comprising a first refracting entry surface disposed to receive the light from the at least two LEDs, the first refracting entry surface being disposed in a first plane and a second refracting entry surface disposed to receive the light from the at least two LEDs, the second refracting entry surface being disposed at an angle of other than 180 degrees relative to the first plane wherein the first refracting entry surface has a first plurality of refracting surfaces arranged in a first pattern and the second refracting entry surface has a second plurality of refracting surfaces arranged in a second pattern. - View Dependent Claims (17, 18, 19)
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20. A LED lamp comprising:
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at least two LEDs providing light of at least two different spectral outputs; and an optic element comprising a refracting entry surface disposed to receive the light from the at least two LEDs, the refracting entry surface refracting the light tangentially wherein the entry surface is surrounded by an annular guide surface comprising a plurality of refracting surfaces that extend along a longitudinal axis of the lamp generally perpendicular to the entry surface.
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21. A LED lamp comprising:
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at least two LEDs providing light of at least two different spectral outputs; and an optic element comprising a refracting entry surface disposed to receive the light from the at least two LEDs, the refracting entry surface comprising a plurality of refracting surfaces wherein at least some of the plurality of refracting surfaces extend for a different length than other ones of the plurality of refracting surfaces, the refracting entry surface refracting the light tangentially.
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Specification