Patent ID: 7465081
Filing Date: 2008-12-16
Classification: G03B

Abstract:
1. A lighting system comprising: a light source: a reflector for reflecting some of light fluxes emitted from the light source; an optical member, wherein the optical member includes: a light reception face for receiving light fluxes from the light source and the reflector; a main light reflection face for reflecting light fluxes toward an object side; a light emission face which directs light fluxes directly incoming from the light reception face towards a main reflection face though total internal reflection, and transmits light directly incoming from the main light reflection face such that the light is emitted towards the object side; wherein the reflector has a concave portion opposed to the light reception face with respect to the light source, a first linear portion extending from one end of the concave portion to an object side end of the light reception face, and a second linear portion extending from the other end of the concave portion to an end of the light reception face opposite from the object side end, and the first linear portion reflects light fluxes from the light source or the second linear portion towards the main light reflection face or the light emission face; and wherein the main reflection face has a face in which an angle formed with the light reception face is greater than or equal to 40° and less than or equal to 70°.