Patent ID: 8011818
Filing Date: 2011-09-06
Classification: F21K,F21Y,G02B

Abstract:
1. A lighting device, comprising: at least a first solid state light emitter; and at least a first optical device, said first optical device comprising at least a first optical device structure, a second optical device structure and a third optical device structure, said first optical device structure comprising a first surface and a second surface, said second optical device structure comprising a third surface and a fourth surface, said third optical device structure comprising a fifth surface and a sixth surface, said second surface in contact with said third surface, said fourth surface in contact with said fifth surface, a first region of said second optical device structure comprising at least a portion of said fourth surface, a first region of said third optical device structure comprising at least a portion of said fifth surface, said first region of said second optical device structure having a first index of refraction, said first region of said third optical device structure having a second index of refraction, said first index of refraction greater than said second index of refraction, said first solid state light emitter positioned and oriented such that if said first solid state light emitter is illuminated, at least a portion of light emitted by said first solid state emitter will enter into said second optical device structure, at least one of (1) at least a portion of said first surface and (2) at least a portion of said sixth surface constituting an external surface of said lighting device.