Patent ID: 8155489
Filing Date: 2012-04-10
Classification: G02B,H04M

Abstract:
1. A device comprising: a ridge, a substantially planar waveguide having a first surface and a second surface and comprising a plurality of out coupling portions on one of or on both of the first or second surfaces of the substantially planar waveguide, wherein said ridge has an end for coupling light into said ridge in order to form a light beam waveguided longitudinally within said ridge, said ridge and said substantially planar waveguide having a common portion to couple light out of said ridge sideways into said substantially planar waveguide, and said out-coupling portion being adapted to couple light out of the substantially planar waveguide, the light having substantially non-uniform intensity distribution on the first and second surfaces; and at least one of: a set of proximity sensors positioned under the substantially planar waveguide opposite the planar surface, and at least partially transparent touch sensitive elements positioned over the substantially planar waveguide adjacent to the planar surface for providing in the device a keypad or a keyboard.