Patent ID: 8764238
Filing Date: 2014-07-01
Classification: B60Q,F21K,F21V,F21Y,G02B

Abstract:
1. A lighting apparatus, comprising: a linear array of light emitting diodes (LEDs) each having a light emitting area and having a spacing between the light emitting area and light emitting area of an adjacent LED, each of the LEDs having an optical axis defined normal to the light emitting area; a linear array of non-imaging concentrators each disposed along a respective one of the optical axes and being optically coupled to a respective one of the LEDs to receive radiation emitted therefrom, each of the non-imaging concentrators having an output aperture through which the received radiation propagates; a linear array of collimating optics each disposed along a respective one of the optical axes and having a focal length, each of the collimating optics being separated along the respective one of the optical axes from the output aperture of a respective one of the non-imaging concentrators by a distance substantially equal to the focal length to thereby image the output aperture of the non-imaging concentrator at infinity; and a diffuser disposed substantially normal to the optical axes wherein the diffuser selectively increases the far field divergence of radiation propagating from the linear array of collimating optics in at least one of two mutually orthogonal planes.