Fraen Corporation

Robert A Gobron

Marco Angelini

Claudia Bigliati

Natale Baraldo

Rachel Taranta

Carlton S Jones

Anthony L Bolzan

In one aspect, a light pipe is disclosed. In some embodiments, the light pipe comprises an input section including a waveguide having a circular cross section; and an output section having a polygonal cross section, wherein the input section has an input surface for receiving light from one or more light sources and an output surface through which light exits the input section, and the output section has an input surface optically coupled to the output surface of the input section to receive at least a portion of the light exiting the input section, and an output surface through which light exits the light pipe.

Low-profile color-mixing lightpipe

In one aspect, a light-mixing system is disclosed, which includes a light pipe having an input surface configured for receiving light from a light source, a light-mixing segment optically coupled to the input surface, and an output surface optically coupled to said light-mixing segment through which light exits the light pipe. A putative vector normal to at least one of the input or the output surface forms a non-zero angle relative to a longitudinal axis of the light-mixing segment. In some embodiments, the non-zero angle can be, for example, about 90 degrees.

An optical system is disclosed, which comprises a glass light pipe having an input surface for receiving light from a light source and an output surface through which light exits the light pipe, and a polymeric light pipe optically coupled at its input surface to the output surface of the glass light pipe to receive at least a portion of the light exiting the glass light pipe, said polymeric light pipe having a textured output surface. A plurality of microlenses is optically coupled to said textured surface of the polymeric light pipe, and a projection lens is optically coupled to the output surface of the polymeric light pipe to receive light therefrom.

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Southborough, MA, United States of America

Robert A Gobron