Patent ID: 7645042
Filing Date: 2010-01-12
Classification: G02B,G03B,Y10S

Abstract:
1. A light conducting unit disposed between a light source and a region which is to be illuminated, comprising: a polygonal prism made from a first medium with a first coefficient of refraction; a first light conducting unit which directs light to be incident upon a first surface of the polygonal prism; and a second light conducting unit upon which light emitted from a second surface of the polygonal prism is incident, wherein; the polygonal prism comprises a reflective device which reflects light that is incident into the polygonal prism from the first surface towards the second surface; a second medium with a second coefficient of refraction which is less than the first coefficient of refraction is provided at the first surface and the second surface; interiors of the first light conducting unit and the second light conducting unit are filled with the second medium; and the first light conducting unit and the second light conducting unit are provided directly adjacent to the polygonal prism.