Rear-mounted LED module for combination rear lights on motor vehicles

摘要

A rear-mounted LED module for a combination rear light is disclosed. One or more LEDs are mounted on a circuit board that electrically operates them and mechanically holds them outside of a faceted parabolic reflector. Light emitted from the LEDs enters a light propagation area formed between the adjacent reflection sides of two interleaved cylinders. The cylinders extend from the LEDs, outside the reflector, longitudinally through a hole at the apex of the reflector to the focus of the reflector. In some applications, the light propagation region may serve as a beam homogenizer, such that light exiting the light propagation region may have approximately uniform intensity. Light from the light propagation area strikes an outwardly widened reflector, which directs it largely across the parabolic reflector. The parabolic reflector collimates the light and directs it longitudinally through a transparent cover and out of the lamp. The parabolic reflector may have facets that deflect portions of the reflected light to form a desired two-dimensional angular distribution for the outgoing beam.