SEMICONDUCTOR LIGHT EMITTING DEVICE LAMP THAT EMITS LIGHT AT LARGE ANGLES

摘要

Embodiments of the invention include a plurality of semiconductor light emitting diodes attached to a mount. A plurality of lenses are disposed over the plurality of semiconductor light emitting diodes. A lens disposed over a semiconductor light emitting diode proximate an edge of the mount is rotationally asymmetrical and is shaped such that for a portion of the lens light emitted at an intensity that is half a maximum intensity is emitted at an angle of at least 70° relative to a normal to a top surface of the semiconductor light emitting diode.

主权项

1. A structure comprising:
a plurality of semiconductor light emitting diodes attached to a mount, the mount having a plurality of edges and a center; and one or more first lenses disposed over a first subset of the semiconductor light emitting diodes proximate one of the edges of the mount wherein the first lenses are rotationally asymmetrical; and one or more second lenses disposed over second subset of the plurality of semiconductor light emitting diodes proximate the center of the mount wherein the second lenses are rotationally symmetrical.