06686676 is referenced by 94 patents.

UV reflectors incorporated in UV LED-based light sources reduce the amount of UV radiation emission into the surroundings and increase the efficiency of such light sources. UV reflectors are made of nanometer-sized particles having a mean particle diameter less than about one-tenth of the wavelength of the UV light emitted by the UV LED, dispersed in a molding or casting material surrounding the LED. Other UV reflectors are series of layers of materials having alternating high and low refractive indices; each layer has a physical thickness of one quarter of the wavelength divided by the refractive index of the material. Nanometer-sized textures formed on a surface of the multilayered reflector further reduce the emission of UV radiation into the surroundings. UV LED-based light sources include such a multilayered reflector disposed on an encapsulating structure of a transparent material around a UV LED, particles of a UV-excitable phosphor dispersed in the transparent material. Alternatively, the transparent material also includes nanometer-sized particles of a UV-radiation scattering material.

Title
UV reflectors and UV-based light sources having reduced UV radiation leakage incorporating the same
Application Number
9/681560
Publication Number
6686676 (B2)
Application Date
April 30, 2001
Publication Date
February 3, 2004
Inventor
James Wilson Rose
Guilderland
NY, US
Daniel Darcy Doxsee
Sagamore Hills
OH, US
Thomas Francis McNulty
Ballston Lake
NY, US
Agent
Patrick K Patnode
US
Toan P Vo
US
Assignee
General Electric Company
NY, US
IPC
H01K 1/30
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