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US 2022/0029063 A1Published application
Optical film and light emitting device including the same
AssigneeLextar Electronics Corporation
InventorsChih-Hao LIN, Kang-Hung LIU
Life of this patent
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Abstract
An optical film includes a first transparent layer and a reflective coating. The first transparent layer has a light input surface and a light output surface. A plurality of cavities are formed on the light input surface, wherein each cavity has a first linear sidewall and a second linear sidewall, the second linear sidewall is inclined to the first linear sidewall. The reflective coating is formed on the second linear sidewall of each cavity.
Claims20
An optical film comprising:
- a first transparent layer having a light input surface and a light output surface;
- a plurality of cavities formed on the light input surface, wherein each cavity has a first linear sidewall and a second linear sidewall, the second linear sidewall is inclined to the first linear sidewall;
- and
- a reflective coating formed on the second linear sidewall of each cavity.
1 more element
A light emitting device comprising:
- a substrate;
- a plurality of LEDs disposed on the substrate;
- a first transparent layer disposed over the LEDs, the first transparent layer having a light input surface and a light output surface, the light input surface facing the LEDs;
- a plurality of cavities formed on the light input surface, wherein each cavity has a first linear sidewall and a second linear sidewall, the second linear sidewall is inclined to the first linear sidewall;
- and
- a reflective coating formed on the second linear sidewall of each cavity.
3 more elements
Dependencies are inferred from the claim text.