A LIGHTING DEVICE HAVING AN OPTICAL LENS FORMED ON COMPOSITE ENCAPSULANT COMPRISING NANOPARTICLES COVERING A LIGHT-EMITTING DIODE (LED)
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United States of America Patent
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May 13, 2016
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May 13, 2016
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Abstract
There is herein described a lighting device including a composite encapsulant and an optical component. The lighting devices include a first interface between the composite encapsulant and a light emitting surface of a light source, and a second interface between the composite encapsulant and the optical component. In various embodiments, the composite encapsulant is configured to increase a critical angle at the first interface, so as to limit total internal reflection at the first interface. Moreover, the properties and/or other features of the composite encapsulant may be controlled to also limit total internal reflection at the second interface. Methods of making such lighting devices are also disclosed.
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