Patent ID: 9052423
Filing Date: 2015-06-09
Classification: B82Y,G02B,Y10S

Abstract:
1. A lighting device comprising: a transparent waveguide plate, comprising a first surface, an opposite second surface, and an edge surface between the first surface and the second surface; a light source for providing light source light towards the transparent waveguide plate, wherein the light source is configured to provide at least part of the light source light in a direction perpendicular to one or more of the first surface and the second surface, wherein the light source light is coupled into the waveguide plate via at least one of the first surface or the second surface, and wherein the transparent waveguide plate further comprises: a luminescent material configured to convert at least part of the light source light into luminescent material emission, wherein the luminescent material is arranged in the path of a beam of the light source light, a light outcoupling structure configured to couple at least a portion of the luminescent material emission out of the transparent waveguide plate as lighting device light in a direction away from one or more of the first surface and the second surface,