Vehicle light unit splits illumination from source into beams undergoing repeated total internal reflection, refraction or single total internal reflection, before leaving

摘要

The first and second long sides (5, 11) are shaped to split light passing through the entry surface (13) into two or more light beams (16, 21, 23, 26). The first beam (16) undergoes successive total internal reflection at two surfaces (17, 19). It leaves the optical conductor (2, 34) at the exit surface (5). A second beam (21), only undergoes refraction at the first long side (5). Additionally or alternatively, a third light beam (23) undergoes total internal reflection at a side of the optical conductor facing the source, to leave via the exit surface (5).