Brightness enhancement method and apparatus of light...

Details Brightness enhancement method and apparatus of light... Brightness enhancement method and apparatus of light...

2011-08-30

2011-08-30

Nhu, David (Department: 2895)

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Having insulated electrode

C257S040000, C257S078000, C257SE21278, C257SE21352, C257SE21366, C257SE21400, C257SE21499, C257SE21527

Reexamination Certificate

active

08008694

ABSTRACT:
A light source with enhanced brightness includes an angle-selective optical filter and a light emitting diode (LED) having a high reflective layer. The angle-selective filter is located on the top surface of emitting diode to pass lights at specified angles. According to one embodiment, the angle-selective filter includes index-alternating layers. With a reflective polarizer, the light source can produce polarized light with enhanced brightness.

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Chinese Office Action, dated Jun. 4, 2010, in a counterpart Chinese patent application, No. 200780035026.8.

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