Multiple die LED and lens optical system
First Claim
Patent Images
1. A method comprising:
- providing a submount;
positioning and mounting a plurality of light emitting diode dies on the submount, the plurality of light emitting diode dies being positioned to be separated from each other;
providing a lens system comprising adjacent asymmetric lens elements;
optically coupling the submount with the plurality of mounted light emitting diode dies to the lens system so that each of the lens elements is aligned with a corresponding light emitting diode die; and
providing an encapsulant in a region that is disposed between the submount with a plurality of light emitting diode dies and the lens system.
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Abstract
A light emitting device includes a number of light emitting diode dies (LEDs) mounted on a shared submount and covered with a single lens element that includes a corresponding number of lens elements. The LEDs are separated from each other by a distance that is sufficient for lens element to include separate lens elements for each LED. The separation of the LEDs and lens elements may be configured to produce a desired amount of light on a target at a predefined distance. In one embodiment, the lens elements are approximately flat type lens elements, such as Fresnel, TIR, diffractive lens, photonic crystal type lenses, prism, or reflective lens.
25 Citations
25 Claims
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1. A method comprising:
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providing a submount; positioning and mounting a plurality of light emitting diode dies on the submount, the plurality of light emitting diode dies being positioned to be separated from each other; providing a lens system comprising adjacent asymmetric lens elements; optically coupling the submount with the plurality of mounted light emitting diode dies to the lens system so that each of the lens elements is aligned with a corresponding light emitting diode die; and providing an encapsulant in a region that is disposed between the submount with a plurality of light emitting diode dies and the lens system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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providing a plurality of submounts; positioning and mounting a plurality of light emitting diode dies on the plurality of submounts, the plurality of light emitting diode dies being positioned to be separated from each other; providing a plurality of lens systems, each lens system comprising adjacent asymmetric lens elements; optically coupling the plurality of light emitting diode dies to the plurality of lens systems so that each of the lens elements is aligned with a corresponding light emitting diode die; and providing an encapsulant in a region that is disposed between the at least one submount with the plurality of light emitting diode dies and the lens system. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method comprising:
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providing a submount; positioning and mounting a plurality of light emitting diode dies on the submount, the plurality of light emitting diode dies being positioned to be separated from each other; providing a lens system comprising adjacent asymmetric lens elements; providing an encapsulant in a region that is disposed between the submount with a plurality of light emitting diode dies and the lens system; and optically coupling the submount with the plurality of mounted light emitting diode dies to the lens system so that each of the lens elements is aligned with a corresponding light emitting diode die wherein the lens elements are separated from each other, and wherein a separation between the light emitting diode dies, a separation between centers of the lens elements, and an alignment of the lens elements with a respective light emitting diode die are configured to produce a desired light distribution on target at a predefined distance. - View Dependent Claims (24, 25)
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Specification