Multi-facet light engine

Abstract

A lighting assembly includes a plurality of LEDs configured as a multi-facet light engine. A first group of LEDs are arrayed as a main light source and the remaining LEDs are angled relative to the first group of LEDs to generate an intended lighting pattern. The first group of LEDs are arrayed on a first planar surface of a first substrate, and the remaining LEDs are arrayed on second planar surfaces of additional substrates positioned around the first substrate. The planar surfaces of the additional substrates are angled relative to the planar surface of the first substrate. The angles of the second planar surfaces to the first planar surface can be application specific and can be acute or obtuse.

Description

RELATED APPLICATIONS[0001]This Patent Application claims priority under 35 U.S.C. 119 (e) of the co-pending U.S. provisional application, Ser. No. 61 / 665,179, filed Jun. 27, 2012, and entitled “LED LIGHTING” and U.S. provisional application, Ser. No. 61 / 673,660, filed Jul. 19, 2012, and entitled “HIGH BAY LED LIGHTING AND HEAT DISSIPATION”, both by these same inventors. This application incorporates U.S. provisional application, Ser. No. 61 / 665,179 and U.S. provisional application, Ser. No. 61 / 673,660 in their entireties by reference.FIELD OF THE INVENTION[0002]The present invention is generally directed to the field of light emitting diode (LED) lighting. More specifically, the present invention is directed to a LED device configured as a multi-facet light engine.BACKGROUND OF THE INVENTION[0003]A light-emitting diode (LED) is a semiconductor light source. LEDs are increasingly being used in a wide variety of lighting applications. LEDs continue growing in popularity due in part to...

AI Technical Summary

Benefits of technology

[0008]In some embodiments, the first planar surface is parallel to the external illumination surface. In some embodiments, the first planar surface and the plurality of second planar surfaces are angled to provide a determined lighting pattern on the external illumination surface. In some embodiments, each second substrate is rotatably coupled to the first substrate so as to enable change of the angle at which the second substrate is coupled to the first substrate. In some embodiments, the angle that each second substrate is positioned relative to the first substrate is the same. In other embodiments, the angle that one or more of the second substrates is positioned relative to the first substrate is different. In some embodiments, the first substrate includes a plurality of first outer edges and each second substrate includes at least a second outer edge, further wherein the second outer edge of each second substrate is coupled to a corresponding one first outer edge of the first substrate. In some embodiments, a number of first outer edges equals a number of second substrates. In other embodiments, a number of first outer edges is not equal to a number of second substrates.

Problems solved by technology

Although useful to reduce shadowing effects, the additional optical elements reduce efficiency and add cost and complexity to the lighting assembly.

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