Lighting head assembly with improved optical control
First Claim
1. A lighting head assembly comprising:
- a receiver sleeve having a first end and a second end, a tubular side wall having an interior surface, said tubular side wall extending between said first and second ends and a substantially planar end wall at said first end, said end wall having an interior surface, an exterior surface and an aperture in said end wall;
a non-reflective coating on said interior surfaces of said side wall and said end wall; and
a lighting element having an optical end, said optical end of said lighting element received on the exterior of said receiver sleeve in alignment with said aperture adjacent said exterior surface of said end wall, wherein said optical end of said lighting element is substantially entirely on the exterior side of the plane of said end wall, wherein light output from said lighting element is directed into said aperture.
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Accused Products
Abstract
A novel lighting assembly that incorporates a high brightness light emitting diode (LED) in a compact assembly for further integration into a lighting device is provided. The lighting head assembly of the present invention provides several novel aspects that are all closely integrated to provide a unique assembly for incorporating a high brightness LED into a lighting device. In particular, the head assembly utilizes a receiver sleeve that includes a non reflective coating to provide a high level of contrast between the lighting element and the interior region surrounding the lighting element. Further, an optical element is coupled to the receiver to capture an image of the lighting element to provide a sharp, uniformly illuminated image in the far field of the device.
20 Citations
22 Claims
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1. A lighting head assembly comprising:
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a receiver sleeve having a first end and a second end, a tubular side wall having an interior surface, said tubular side wall extending between said first and second ends and a substantially planar end wall at said first end, said end wall having an interior surface, an exterior surface and an aperture in said end wall; a non-reflective coating on said interior surfaces of said side wall and said end wall; and a lighting element having an optical end, said optical end of said lighting element received on the exterior of said receiver sleeve in alignment with said aperture adjacent said exterior surface of said end wall, wherein said optical end of said lighting element is substantially entirely on the exterior side of the plane of said end wall, wherein light output from said lighting element is directed into said aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A lighting assembly comprising:
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a receiver sleeve having a first end, a second end and an Interior surface, an end wall at said first end of said receiver sleeve, said end wall having an interior surface, an exterior surface and an aperture therein; a lighting element having an optical end, said optical end of said lighting element received on the exterior of said receiver sleeve in alignment with said aperture adjacent said exterior surface of said end wall, wherein light output from said lighting element passes through said aperture, illuminating said aperture such that the light entering the receiver sleeve through the illuminated aperture does not impInge on the interior surface of said end wall, said interior surface of said end wall remaining non-illuminated; and a lens adjacent said second end of said receiver sleeve, wherein said lens captures and projects a circular image of the illuminated aperture and said non-illuminated end wall forming a clearly defined beam cut-off edge thus providing a circular illuminated spot having a clearly defined edge in the far field of said lighting assembly. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A flashlight assembly comprising:
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a housing having a first end and a second end; a receiver sleeve received into said first end of said housing, said receiver sleeve having a first end, a second end, an interior surface and an end wall at said first end of said receiver sleeve, said end wall having an interior surface, an exterior surface and an aperture therein; a mounting board adjacent said exterior surface of said end wall of said receiver sleeve, said mounting board having first and second electrical contacts thereon; a power source received in said second end of said housing, said power source in electrical communication with said first and second electrical contacts on said mounting board; a lighting element having an optical end and first and second contact leads extending therefrom, said lighting element mounted to said mounting board such that said first and second contact leads are in electrical communication with said first and second electrical contacts respectively, said optical end of said lighting element being on the exterior of said receiver sleeve in alignment with said aperture adjacent said exterior surface of said end wall, wherein light output from said lighting element passes through said aperture illuminating said aperture such that the light entering the receiver sleeve through the illuminated aperture does not impinge on the interior surface of said end wall, said interior surface of said end wall remaining non-illuminated; switching means to selectively energize said lighting element; and a lens adjacent said second end of said receiver sleeve, wherein said lens captures and projects a circular image of the illuminated aperture and said non-illuminated end wall forming a clearly defined beam cut-off edge thus providing a circular illuminated spot having a clearly defined edge in the far field of said flashlight. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification