Beam shaping lens and LED lighting system using same
First Claim
1. A light engine for a lighting system, the light engine comprising:
- an LED light source of size S;
a reflector comprising a bottom portion that is near the LED light source; and
a lens attached to the reflector, the lens further comprising,an entry surface including a plurality of concentric rings, each having a substantially triangular cross-section with no side that is parallel to an axis of the lens, wherein the lens has a diameter LD, where the ratio LD/S is between about 8;
1 and 4;
1; and
an exit surface that is textured to provide diffusion.
3 Assignments
0 Petitions
Accused Products
Abstract
A beam shaping lens and an LED lighting system are disclosed. The lens according to example embodiments can concentrate or spread light, depending on the specific embodiment used. The lens according to example embodiments of the invention includes repeated concentric rings of refractive features, with either a constant or gradient feature angle. These features may include substantially triangular concentric rings. These features are located on the interior face of the lens, facing the LED source. In some embodiments, the exterior or exit surface of the lens includes texturing. A lens according to example embodiments of the invention can be used with various fixtures. Light enters the lens through the entry surface including the concentric rings, and exits the fixture through a textured exit surface opposite the entry surface.
70 Citations
32 Claims
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1. A light engine for a lighting system, the light engine comprising:
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an LED light source of size S; a reflector comprising a bottom portion that is near the LED light source; and a lens attached to the reflector, the lens further comprising, an entry surface including a plurality of concentric rings, each having a substantially triangular cross-section with no side that is parallel to an axis of the lens, wherein the lens has a diameter LD, where the ratio LD/S is between about 8;
1 and 4;
1; andan exit surface that is textured to provide diffusion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A lighting system comprising:
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an LED light source of size S; a reflector to reflect at least a portion of the light from the LED light source, the reflector including a bottom portion that is near the LED light source; and a lens disposed to receive the light from the LED light source, the lens further including an entry surface comprising a plurality of concentric rings, each having a substantially triangular cross-section with no side that is parallel to an axis of the lens and a textured exit surface to provide diffusion, wherein the lens has a diameter LD, where the ratio LD/S is between about 8;
1 and 4;
1. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of assembling an LED light fixture, the method comprising:
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providing a reflector; arranging an LED light source of size S proximate to the reflector so that a bottom portion of the reflector is near the LED light source; connecting the LED light source to a power supply to enable the power supply to energize the LED light source; and attaching a lens to the reflector to receive light from the LED light source at least one of directly or as reflected by the reflector, wherein the lens further comprises an entry surface including a plurality of concentric rings, each having a substantially triangular cross-section with no side that is parallel to an axis of the lens and a textured exit surface to provide diffusion and wherein the lens has a diameter LD, where the ratio LD/S is between about 8;
1 and 4;
1 and the lens has a beam angle from about 10°
to about 15°
. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A lighting system comprising:
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an LED light source of size S; a reflector to reflect at least a portion of the light from the LED light source positioned so that a bottom portion of the reflector is near the LED light source; and a lens disposed to receive the light from the LED light source, the lens having a plurality of concentric features on an entry surface, each with non-vertical sides so that an effective surface area of the lens is increased by a surface space of the non-vertical sides and the lens has a diameter LD, where the ratio LD/S is between about 8;
1 and 4;
1 for a beam angle from about 10°
to about 15°
. - View Dependent Claims (31, 32)
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Specification