Patent ID: 8979347
Filing Date: 2015-03-17
Classification: F21V,F21Y,G02B,Y10T

Abstract:
1. A light source comprising: one or more light emitters having one or more light emitting surfaces disposed about a longitudinal axis and oriented to output light radially outwardly away from the longitudinal axis; and a collimating reflector disposed radially outward of the one or more light emitters, all or part of the collimating reflector configured to at least partially collimate light output by the one or more light emitters and to substantially preserve etendue of the light output by the one or more light emitters, the collimating reflector including an input aperture having a width in a direction of the longitudinal axis, the one or more light emitting surfaces extending across substantially the entire width of the input aperture in the direction of the longitudinal axis, wherein the collimating reflector includes an upper reflective surface above the input aperture and a lower reflective surface below the input aperture, wherein the upper reflective surface has a parabolic curvature with a focal point located substantially at a lower end of the input aperture, and wherein the lower reflective surface has a parabolic curvature with a focal point located substantially at an upper end of the input aperture.