Ideal Industries Lighting LLC

Cree Gmbh

Cree Lighting USA LLC

Steve Wilcenski

Kurt S Wilcox

Jin Hong Lim

Curt Progl

Zongjie Yuan

John K Roberts

Theodore D Lowes

Lighting devices having optical waveguides for controlled light distribution are provided. A lighting device includes a housing, a light emitter disposed in the housing, and a waveguide at least partially disposed in an opening of the housing. The waveguide includes a light input surface defining coupling features, wherein the light emitter is disposed adjacent the light input surface and emits light into the coupling features. The waveguide further includes a light transmission portion disposed between the light input surface and a light extraction portion, wherein light from the light emitter received at the light input surface propagates through the light transmission portion toward the light extraction portion. The waveguide further includes the light extraction portion, which comprises at least one light redirection feature and at least one light extraction feature that cooperate to generate a controlled light pattern exiting the lighting device.

Lighting devices having optical waveguides for controlled light distribution

A lighting device comprises a body of optically transmissive material exhibiting a total internal reflection characteristic, the body further comprising a light input surface for receiving light, a light extraction portion spaced from the light input surface, a light transmission portion disposed between the light input surface and the light extraction portion, and at least one light deflection surface for deflecting light toward the light extraction portion. Further in accordance with this aspect the light extraction portion comprises a first extraction surface for extracting light deflected by the at least one light deflection surface out of the body and a second extraction surface for extracting light other than light deflected by the at least one light deflection surface out of the body.

Luminaires utilizing optical waveguide

Asymmetrical lenses are provided having design to mitigate or eliminate field of view mismatch between image sensor modules and luminaires incorporating the image sensor modules. Briefly, an asymmetrical lens comprises an optical axis and a front surface comprising a first set of normal axes (x, y) in a plane normal to the optical axis and a negative radius of curvature or positive radius of curvature along each of the normal axes (x, y). The asymmetrical lens also comprises a back surface comprising a second set of normal axes (x', y&#x2032;) in the plane normal to the optical axis and a negative radius of curvature or positive radius of curvature along each of the normal axes (x&#x2032;, y&#x2032;), wherein the asymmetrical lens has negative refractive power or positive refractive power in each of an x-axis and y-axis of an image plane of the asymmetrical lens.

Image sensor modules and luminaires incorporating the same

According to one aspect, an optical waveguide comprises a waveguide body exhibiting total internal reflection, a substrate, and a plurality of light extraction features disposed on a surface of the substrate. The light extraction features are non-adhesively bonded to the waveguide body or may be disposed on opposing sides of the substrate. A method of forming an optical element is also disclosed.

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Cary, NC, United States of America

Steve Wilcenski