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.
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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