Patent ID: 8876348
Filing Date: 2014-11-04
Classification: F21V,F21Y,G02B

Abstract:
1. A light fixture comprising: a) at least one light emitting source; b) at least one light collimating element disposed to receive light originating from the light source with a first angular full-width at half maximum intensity profile within a first input plane and redirect the light into a second angular full-width at half maximum intensity profile wherein the second angular full width is less than the first angular full width; and c) an optical cavity into which light from the light collimating element is input; and d) a light transmissive wall substantially parallel to the optical axis of the light collimating element output, wherein a face of said light transmissive wall adjacent to the optical cavity acts as an input surface and a portion of light within light transmissive wall is internally reflected to act as a lightguide; and e) a light redirecting region optically coupled to light transmissive wall which causes light to exceed the critical angle of internal reflection and outcouple from the light transmissive wall.