Patent ID: 9116262
Filing Date: 2015-08-25
Classification: G02B

Abstract:
1. An illumination system, comprising: a light source; an optical waveguide having a proximal end and a distal end, said proximal end being arranged to receive light from said light source and said distal end being suitable to illuminate an object of interest; and an optical coupler constructed and arranged to couple light from said light source into said optical waveguide, wherein said optical coupler comprises a reflective surface that reflects at least some light diverging from said light source to be coupled into said optical waveguide, and wherein said optical coupler is structured to couple light from said light source into said optical waveguide with an efficiency of at least 85% when said optical waveguide is at least 7 mm wide and an efficiency of at least 19% when said optical waveguide is about 1 mm wide.