High-brightness LED-phosphor coupling

Details High-brightness LED-phosphor coupling High-brightness LED-phosphor coupling

2006-09-19

2006-09-19

Luebke, Renee (Department: 2875)

Illumination

Light source or light source support and luminescent material

C362S293000, C362S800000, C257S099000

Reexamination Certificate

active

07108386

ABSTRACT:
A high brightness LED phosphor coupling device. A semiconductor light source is encapsulated by a medium of first index of refraction, a layer of phosphor surrounded by a second medium of second index of refraction of optical index less than the first index and a light coupler for redirecting most of the light from the light source to an area of the phosphor about equal to the area of the light source multiplied by the square of the ratio of the first to the second index of refraction.

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