An optical device for coupling the luminous output of a light-emitting diode (LED) to a predominantly spherical pattern comprises a transfer section that receives the LED's light within it and an ejector positioned adjacent the transfer section to receive 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 light enters the transfer section. The transfer section can comprises a compound elliptic concentrator operating via total internal reflection. The ejector section can have a variety of shapes, and can have diffusive features on its surface as well. The transfer section can in some implementations be polygonal, V-grooved, faceted and other configurations.
申请公布号
EP1692557(A2)
申请公布日期
2006.08.23
申请号
EP20040811328
申请日期
2004.11.17
申请人
LIGHT PRESCRIPTIONS INNOVATORS LLC.
发明人
CHAVES, JULIO CESAR;MINANO, JUAN CARLOS;BENITEZ, PABLO;PARKYN, WILLIAM, A., JR.;FALICOFF, WAQIDI;MUNOZ, FERNANDO;SUN, YUPIN