An optical device (270) for coupling the luminous output of a light-emitting diode (LED, 22) to a predominantly spherical pattern comprises a transfer section (271) that receives light from the transfer section and spread the light generally spherically. A base of the transfer section is optically aligned and/or coupled to the LED so that the LED’s (22, 23, 24) light enters the transfer section. The transfer section (271) can comprises a compound eelliptical concentrator (271) operating via total internal reflection. The ejector section can have a variety of shapes (272, 273), and can have diffusive features on its surface as well.

Title
Optical device for led-based lamp
Application Number
PCT/US2004/038584
Publication Number
2005/050710
Application Date
November 17, 2004
Publication Date
June 2, 2005
Inventor
Sun Yupin
Munoz Fernando
Falicoff Waqidi
Parkyn William A Jr
Benitez Pablo
Minano Juan Carlos
Chaves Julio Cesar
Agent
SAMPLES Kenneth H
Assignee
Sun Yupin
Munoz Fernando
Falicoff Waqidi
Parkyn William A Jr
Benitez Pablo
Minano Juan Carlos
Chaves Julio Cesar
Light Prescriptions Innovators
IPC
H01L 33/00
H01L 21/00
G02B 03/02
G02B 17/00
G02B 13/20
G02B 13/18
F21V 07/04
F21V 05/04
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