Light emitting diode device
First Claim
Patent Images
1. A light emitting diode device, comprising:
- at least one light emitting diode;
a heat-sink chassis having a surface upon which the at least one light emitting diode is mounted; and
a waveguide having one end coupled to the at least one light emitting diode for receiving light therefrom, and another end which includes a light extraction and redistribution region,wherein the waveguide is configured to guide light received from the at least one light emitting diode away from the heat-sink chassis and towards the light extraction and redistribution region, and the light extraction and redistribution region is configured to extract and redistribute the light from the waveguide, andthe light extraction and redistribution region comprises a top section of the waveguide hollow to form a pocket region, with glass beads located within the pocket region.
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Abstract
A light emitting diode device which includes at least one light emitting diode, a heat-sink chassis having a surface upon which the at least one light emitting diode is mounted, and a waveguide having one end coupled to the at least one light emitting diode for receiving light therefrom. The waveguide has another end which includes a light extraction and redistribution region, and the waveguide is configured to guide light received from the at least one light emitting diode away from the heat-sink chassis and towards the light extraction and redistribution region. The light extraction and redistribution region is configured to extract and redistribute the light from the waveguide.
60 Citations
15 Claims
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1. A light emitting diode device, comprising:
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at least one light emitting diode; a heat-sink chassis having a surface upon which the at least one light emitting diode is mounted; and a waveguide having one end coupled to the at least one light emitting diode for receiving light therefrom, and another end which includes a light extraction and redistribution region, wherein the waveguide is configured to guide light received from the at least one light emitting diode away from the heat-sink chassis and towards the light extraction and redistribution region, and the light extraction and redistribution region is configured to extract and redistribute the light from the waveguide, and the light extraction and redistribution region comprises a top section of the waveguide hollow to form a pocket region, with glass beads located within the pocket region. - View Dependent Claims (2, 3, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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4. A light emitting diode device, comprising:
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at least one light emitting diode; a heat-sink chassis having a surface upon which the at least one light emitting diode is mounted; and a waveguide having one end coupled to the at least one light emitting diode for receiving light therefrom, and another end which includes a light extraction and redistribution region, wherein the waveguide is configured to guide light received from the at least one light emitting diode away from the heat-sink chassis and towards the light extraction and redistribution region, and the light extraction and redistribution region is configured to extract and redistribute the light from the waveguide, the waveguide elevates the light from the light emitting diode towards the light extraction and distribution region along an axis, the light extraction and redistribution region comprises prism-shaped features formed at the another end of the waveguide on a top surface perpendicular to the axis, and the prism-shaped features being configured to induce total internal reflection of the light whereby the reflected light passes through an outer side surface of the waveguide at a desired angular distribution.
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5. A light emitting diode device, comprising:
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at least one light emitting diode; a heat-sink chassis having a surface upon which the at least one light emitting diode is mounted; and a waveguide having one end coupled to the at least one light emitting diode for receiving light therefrom, and another end which includes a light extraction and redistribution region, wherein the waveguide is configured to guide light received from the at least one light emitting diode away from the heat-sink chassis and towards the light extraction and redistribution region, and the light extraction and redistribution region is configured to extract and redistribute the light from the waveguide, the waveguide elevates the light from the light emitting diode towards the light extraction and distribution region along an axis, the light extraction and redistribution region comprises a partially transmitting mirror at the another end of the waveguide on a top surface perpendicular to the axis, and the partially transmitting mirror being configured to reflect a portion of the light whereby the reflected portion passes through an outer side surface of the waveguide at a desired angular distribution, and to transmit a different portion of the light through the top surface. - View Dependent Claims (15)
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Specification