A rear exterior lamp for a vehicle including an optical fiber (61) for providing an optical fiber light output, an optical coupler (50) responsive to the optical fiber light output for providing an optical coupler light output, and a light panel (11, 13, 15, 100) responsive to the optical...http://www.google.de/patents/US5772304?utm_source=gb-gplus-sharePatent US5772304 - Optical fiber-to-planar lightpipe grooved optical coupler
