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US 2014/0175479 A1Published application
Led unit with light mixing element
AssigneeHon Hai Precision Industry Co., Ltd.
InventorCHEN-HAN LIN
Life of this patent
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Abstract
An LED unit includes an LED, a light mixing element mounted on the LED and a lens covering the light mixing element. The light mixing element is transparent and includes a top face, a bottom face and a circumferential face. Light emitted from the LED with a large output angle is refracted by the bottom face, reflected by the circumferential face and refracted by the top face of the light mixing element to radiate out of the light mixing element with a small light emergent angle.
Claims17
An LED (light emitting diode) unit comprising:
- an LED comprising a base, a chip mounted on the base, an encapsulant sealing the chip and phosphor doped within the encapsulant;
- and
- a light mixing element mounted on the LED, the light mixing element comprising a light incident face, a light emergent face and a light reflecting face between the light incident face and the light emergent face;
- and
- a lens;
- wherein light emitted out of the LED with a first light output angle is sequentially refracted by the light incident face and refracted by the light emergent face of the light mixing element to radiate out of the light mixing element with a first light emergent angle, and light emitted out of the LED with a second light output angle is sequentially refracted by the light incident face, reflected by the light reflecting face and refracted by the light emergent face of the light mixing element to radiate out of the light mixing element with a second light emergent angle, the first light output angle being less than the second light output angle, and the first light emergent angle being larger than the second light emergent angle.
3 more elements
Dependencies are inferred from the claim text.