Patent ID: 7688400
Filing Date: 2010-03-30
Classification: G02B,G02F,G09F

Abstract:
1. A light source element, comprising: a light waveguide and a light source, the light waveguide having a light exit face and a surface lying opposite the light exit face, the light exit face and the surface lying opposite the light exit face being connected by side faces, wherein the surface lying opposite the light exit face and at least some portions of the side faces are covered and contacted with reflectors that at least one of reflect and diffusely return light; wherein at least one projection is formed in at least one of the side faces of the light waveguide, each projection extending over less than an entire length of the at least one of the side faces and comprising a portion of the light exit face, a portion of the surface opposite the light exit face, and first and second lateral surfaces connecting said portions of the light exit face and the surface opposite the light exit face; wherein the first lateral surface is covered by a reflector and the second lateral surface is not covered by a reflector and is arranged at an acute angle relative to a principal direction of extent of the light waveguide to form a light entry face; and wherein the light source is positioned in front of the light entry face.