Multiple die LED and lens optical system
First Claim
Patent Images
1. An apparatus comprising:
- an approximately planar submount;
a plurality of light emitting diode dies mounted on the submount, the plurality of light emitting diode dies being separated from each other; and
a lens system positioned over the plurality of light emitting diode dies, the lens system having an individual lens element for each of the plurality of light emitting diode dies, the individual lens elements being integrally formed, each of the individual lens elements being aligned with a respective light emitting diode die, and one or more of the individual lens elements having an asymmetric lens structurewherein the asymmetric lens structure provides an optical center that is substantially offset from a physical center of the lens structure.
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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.
23 Citations
14 Claims
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1. An apparatus comprising:
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an approximately planar submount; a plurality of light emitting diode dies mounted on the submount, the plurality of light emitting diode dies being separated from each other; and a lens system positioned over the plurality of light emitting diode dies, the lens system having an individual lens element for each of the plurality of light emitting diode dies, the individual lens elements being integrally formed, each of the individual lens elements being aligned with a respective light emitting diode die, and one or more of the individual lens elements having an asymmetric lens structure wherein the asymmetric lens structure provides an optical center that is substantially offset from a physical center of the lens structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification