A light source (100) comprises a number of optical components aligned concentrically along an optical axis (115). The optical components include an array of light emitting diodes (101), a dielectric collimator (109) having surfaces configured to provide total internal reflection of light emitted from the array of diodes, and a second stage reflector (113) to further collimate the beam and which also may be based on total internal reflection by a prism structure on the outside.
申请公布号
EP1805455(B1)
申请公布日期
2010.02.17
申请号
EP20050789008
申请日期
2005.10.10
申请人
KONINKLIJKE PHILIPS ELECTRONICS N.V.
发明人
HOELEN, CHRISTOPH, G., A.;ANSEMS, JOHANNES, P., M.