Patent ID: 6560038
Filing Date: 2003-05-06
Classification: F21V,F21W,G02B,H01L,Y10S

Abstract:
A non-imaging optical coupler that is a figure of revolution comprising, in combination:a) a light-transmitting body defining a recessed input cavity, a transparent-droplet shaped encapsulant of a light emitting diode, or array of diodes in the cavity, b) there being a body curved side wall shaped to totally internally reflect all the light emitted from the LED and encapsulant, traveling toward said side wall, within a predetermined distance from the diode or center of said array, c) there also being a body cylindrical transition section extending from said curved side wall and forwardly, d) a planar exit face at the forward end of the body, transverse to an axis of said figure of revolution.