| 摘要 |
A light guide element (201) for modifying a light distribution pattern of a light source (202) is presented. The light source radiates first light beams to a first quarter-space and second light beams to a second quarter-space, where the first and second quarter-spaces are defined by mutually perpendicular spatial planes and one of the spatial planes constitutes a planar boundary between the first and second quarter-spaces. The light guide element comprises transparent material (207) on a route of the first light beams for modifying the light distribution pattern of the first light beams and a reflective surface (208) for reflecting at least a part of the second light beams to the first quarter-space. A surface of solid material on a route of the second light beams comprises grooves (213) for spreading the light distribution pattern of the second light beams in the direction of the section line between the spatial planes. |
