High efficiency automotive LED optical system

摘要

An exterior automotive lamp may be formed with LED light sources by efficiently using the available light. The LEDs are arranged in an array (12) to illuminate a central lens (26) to produce the horizontal spread from the central portion of the LED beam. Meanwhile a reflector (16) gathers the more disperse side-emitted portion of the LED beam and directs that light as an outer sheath to form a supplementary portion of the beam. The lamp efficiently provides a beam that may be adapted for highbeam, lowbeam, fog, or signal purposes.