Patent ID: 9170364
Filing Date: 2015-10-27
Classification: G02B

Abstract:
1. A lighting assembly, comprising: a first light source and a second light source each comprising a pump light source and nominally of the same structural construction, and each having an optical axis extending orthogonally from a center of its light emitting surface, the light sources comprising wavelength converting material and arranged with their optical axes diverging from their respective light emitting surfaces without intersecting, each of the light sources configured to emit respective light comprising on-axis light rays and off-axis light rays, the on-axis light rays emitted at smaller angles relative to the optical axis of the light source than the off-axis light rays that are emitted at larger angles relative to the optical axis of the light source, the off-axis light rays spectrally different from the on-axis light rays; and a light guide comprising: wherein at least one of the first input edge segment and the second input edge segment comprises a light-redirecting edge feature opposite the respective light source to receive the light therefrom, the edge feature configured to specularly redirect at least one of the on-axis light rays and the off-axis light rays in a way that, compared with the respective input edge segment without the edge feature, increases overlap between the on-axis light rays from the first of the light sources and the off-axis light rays from the second of the light sources propagating within the light guide, the increased overlap decreasing spatial color variations between light extracted from the light guide in a region between the light sources and a region in front of either of the respective light sources.