LED PACKAGE WITH ENCAPSULATED CONVERGING OPTICAL ELEMENT
First Claim
1. A light source, comprising:
- an LED die having an emitting surface;
a first optical element including a base, an apex, and a converging side joining the base and the apex, wherein the base is optically coupled to and is no greater in size than the emitting surface, the first optical element having a first index of refraction; and
a second optical element encapsulating the LED die and the first optical element, the second optical element having a second index of refraction lower than the first index of refraction.
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Abstract
The present application discloses a light source comprising an LED die having an emitting surface, a first optical element including a base, an apex, and a converging side joining the base and the apex, wherein the base is optically coupled to the emitting surface and a second optical element encapsulating the LED die and the first optical element. In one aspect, the base is no greater in size than the emitting surface. In a second aspect, the apex resides over the emitting surface. In a third aspect, the second optical element provides an increase in power extracted from the LED die as compared to the power extracted by first optical element alone. In a fourth aspect, the first optical element has a first index of refraction and the second optical element has a second index of refraction lower than the first index of refraction.
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Citations
20 Claims
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1. A light source, comprising:
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an LED die having an emitting surface;
a first optical element including a base, an apex, and a converging side joining the base and the apex, wherein the base is optically coupled to and is no greater in size than the emitting surface, the first optical element having a first index of refraction; and
a second optical element encapsulating the LED die and the first optical element, the second optical element having a second index of refraction lower than the first index of refraction. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A light source, comprising:
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an LED die having an emitting surface;
a first optical element including a base, an apex residing over the emitting surface, and a converging side joining the base and the apex, wherein the base is optically coupled to the emitting surface, the first optical element having a first index of refraction; and
a second optical element encapsulating the LED die and the first optical element, the second optical element having a second index of refraction lower than the first index of refraction. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A light source, comprising:
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an LED die having an emitting surface;
a first optical element including a base, an apex, and a converging side joining the base and the apex, wherein the base is optically coupled to the emitting surface; and
a second optical element encapsulating the LED die and the first optical element, the second optical element providing an increase in power extracted from the LED die as compared to the power extracted by first optical element alone. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification