Total Internal Reflection Lens and Mechanical Retention and Locating Device
First Claim
1. A lens assembly, comprising:
- an optical body member having a first end, a second end opposite the first end, and an outer surface, the optical body member being substantially symmetric with respect to an optical axis, the outer surface being shaped to provide total internal reflection for light from a light source having a specified position in relation to the first end,the optical body member further having an interior open channel extending longitudinally from the first end to the second end thereof, the interior open channel being substantially symmetric with respect to the optical axis, the interior open channel having a first opening at the first end for accommodating the light source and a second opening at the second end,the optical body member further having a plurality of refractive surface regions disposed in the second end thereof and around the second opening of the interior open channel; and
a holder having a concave interior surface shaped to accommodate the optical body member and a convex exterior surface, the holder having a first opening disposed to surround the first opening of the optical body member and a second opening opposite the first opening, wherein the optical body member is insertable into the holder through the second opening,the holder having three or more support members extending from the exterior surface toward the first opening, the support members being adapted for centering the optical body member with respect to the light source and maintaining the light source in the specified position in relation to the optical body member.
1 Assignment
0 Petitions
Accused Products
Abstract
A lens assembly includes a total internal reflection lens and a lens holder. The lens includes a body member having an outer surface shaped to provide total internal reflection and an interior open channel extending longitudinally through the body member. The body member has a first end region for accommodating a light source and a second end region that includes a plurality of refractive surface regions positioned around the open channel. The lens holder has a concave interior surface shaped to accommodate the optical body member of the lens and a convex exterior surface. The holder has multiple clips for securing the lens. The holder also has three or more support members extending from the exterior surface toward the first end. The support members are adapted for centering the optical body member with respect to the light source and maintaining the light source in the specified position in relation to the optical body member.
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Citations
41 Claims
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1. A lens assembly, comprising:
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an optical body member having a first end, a second end opposite the first end, and an outer surface, the optical body member being substantially symmetric with respect to an optical axis, the outer surface being shaped to provide total internal reflection for light from a light source having a specified position in relation to the first end, the optical body member further having an interior open channel extending longitudinally from the first end to the second end thereof, the interior open channel being substantially symmetric with respect to the optical axis, the interior open channel having a first opening at the first end for accommodating the light source and a second opening at the second end, the optical body member further having a plurality of refractive surface regions disposed in the second end thereof and around the second opening of the interior open channel; and a holder having a concave interior surface shaped to accommodate the optical body member and a convex exterior surface, the holder having a first opening disposed to surround the first opening of the optical body member and a second opening opposite the first opening, wherein the optical body member is insertable into the holder through the second opening, the holder having three or more support members extending from the exterior surface toward the first opening, the support members being adapted for centering the optical body member with respect to the light source and maintaining the light source in the specified position in relation to the optical body member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A lens assembly, comprising:
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an optical body member having a first end, a second end opposite the first end, and an outer surface, the optical body member being substantially symmetric with respect to an optical axis, the outer surface being shaped to provide total internal reflection for light from a light source having a specified position in relation to the first end, the optical body member further having an interior open channel extending longitudinally from the first end to the second end thereof, the interior open channel being substantially symmetric with respect to the optical axis, the interior open channel having a first opening at the first end for accommodating the light source and a second opening at the second end, the optical body member further having a plurality of curved refractive surface regions disposed in the second end thereof and around the second opening of the interior open channel, the second end including a peripheral flange that is free of curved refractive surface regions, the peripheral flange having one or more index regions and one or more notches formed therein; and a substantially cylindrical support member having a hollow interior region shaped to accommodate the optical body member and a top rim region having one or more slots for receiving the index regions of the optical body member and one or more snap clips for fitting to the notches of the peripheral flange region of the optical body member and thereby retaining the optical body member, the support member being adapted for centering the optical body member and maintaining the light source at a predetermined position with respect to a the optical body member. - View Dependent Claims (12, 13, 14, 15)
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16. A lens, comprising:
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an optical body member having a first end, a second end opposite the first end, and an outer surface, the optical body member being substantially symmetric with respect to an optical axis, the outer surface being shaped to provide total internal reflection for light from a light source having a specified position in relation to the first end, the optical body member further having an interior open channel extending longitudinally from the first end to the second end thereof, the interior open channel being substantially symmetric with respect to the optical axis, the interior open channel having a first opening at the first end for accommodating the light source and a second opening at the second end, the optical body member further having a plurality of refractive surface regions disposed in the second end thereof and around the second opening of the interior open channel; and a plurality of protrusions extending from the first end of the optical body member, the protrusions being disposed circumferentially around the first opening of the interior open channel and arranged to center the optical body member and to maintain the optical body member at a predetermined position with respect to the light source. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A lighting apparatus, comprising:
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a light source having a plurality of light-emitting-diodes disposed on a substrate that includes a plurality of registration features; an optical body member having a first end, a second end opposite the first end, and an outer surface, the optical body member being substantially symmetric with respect to an optical axis, the outer surface being shaped to provide total internal reflection for light from the light source having a specified position in relation to the first end, the optical body member further having an interior open channel extending longitudinally from the first end to the second end thereof, the interior open channel being substantially symmetric with respect to the optical axis, the interior open channel having a first opening at the first end for accommodating the light source and a second opening at the second end, the optical body member further having a plurality of refractive surface regions disposed in the second end thereof and around the second opening of the interior open channel; and a holder having a concave interior surface shaped to accommodate the optical body member and a convex exterior surface, the holder having a first opening disposed to surround the first opening of the optical body member and a second opening opposite the first opening, wherein the optical body member is insertable into the holder through the second opening, the holder having three or more support members extending from the exterior surface toward the first opening, each support member being configured to fit into one of the plurality of registration features in the substrate, the support members being adapted for centering the optical body member with respect to the light source and maintaining the light source in the specified position in relation to the optical body member. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A lighting apparatus, comprising:
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a light source, the light source including one or more light-emitting diodes (LEDs) disposed on a substrate and a primary lens overlying the LEDs; an optical body member having a first end, a second end opposite the first end, and an outer surface, the optical body member being substantially symmetric with respect to an optical axis, the outer surface being shaped to provide total internal reflection for light from the source having a specified position in relation to the first end, the optical body member further having an interior open channel extending longitudinally from the first end to the second end thereof, the interior open channel being substantially symmetric with respect to the optical axis, the interior open channel having a first opening at the first end for accommodating the light source and a second opening at the second end, the optical body member further having a plurality of curved refractive surface regions disposed in the second end thereof and around the second opening of the interior open channel, the second end including a peripheral flange that is free of curved refractive surface regions, the peripheral flange having one or more index regions and one or more notches formed therein; and a substantially cylindrical support member having a hollow interior region shaped to accommodate the optical body member and a top rim region having one or more slots for receiving the index regions of the optical body member and one or more snap clips for fitting to the notches of the peripheral flange region of the optical body member and thereby retaining the optical body member, the support member being adapted for centering the optical body member and maintaining the light source at a predetermined position with respect to a the optical body member. - View Dependent Claims (30, 31, 32, 33, 34)
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35. A lighting apparatus, comprising:
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a light source having a plurality of light-emitting-diodes disposed on a substrate; an optical body member having a first end, a second end opposite the first end, and an outer surface, the optical body member being substantially symmetric with respect to an optical axis, the outer surface being shaped to provide total internal reflection for light from the source having a specified position in relation to the first end, the optical body member further having an interior open channel extending longitudinally from the first end to the second end thereof, the interior open channel being substantially symmetric with respect to the optical axis, the interior open channel having a first opening at the first end for accommodating the light source and a second opening at the second end, the optical body member further having a plurality of refractive surface regions disposed in the second end thereof and around the second opening of the interior open channel; and a plurality of protrusions extending from the first end of the optical body member, the protrusions being disposed circumferentially around the first opening of the interior open channel and arranged to center the optical body member and to maintain the optical body member at a predetermined position with respect to the light source. - View Dependent Claims (36, 37, 38, 39, 40, 41)
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Specification