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Mirrorless LED With High Luminous Efficiency
University of California System: University of California, Santa Barbara
posted on 06/18/2009
A high efficient LED with enhanced luminous efficacy for optoelectronic applications.
Suggested Uses
- LEDs manufacturing
- Optoelectronic applications
This technology is available for licensing on a non-exclusive basis.
Advantages
- Minimizes the re-absorption of LED light
- Minimizes the internal reflection of LED light
- Increases the total luminous efficacy of the device
- Increases light output power of the LEDs
- Extracts more light out of the LEDs
Detailed Description
Researchers at the University of California, Santa Barbara have developed a light emitting diode (LED) in which the multi directions of light can be extracted from the surfaces of the chip before then entering the shaped plastic optical element and subsequently extracted to air. The present invention combines the high light extraction efficiency LED chip with shaped phosphor layers to increase the total luminous efficacy of the device.
File Number: 19168
Other Information:
Background
Conventional LEDs have used a high reflectivity mirror in order to increase the front emission by reflecting the LED light forward. However, this reflected emission is always partly re-absorbed by the emitting layer, reducing the efficiency or output power of the LEDs.
| Patent Number(s): | 7687813 |
|---|---|
| Copyright: | ©2009-2010, The Regents of the University of California |
This innovation currently is not available for online licensing. Please contact Franco Caporale at University of California System: University of California, Santa Barbara for more information.
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