Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Osram Opto Semiconductors Gmbh

Sennheiser Electronic Gmbh & Co Kg

Excelitas Technologies Corp.

Siemens Aktiengesellschaft

Sergey Kudaev

Peter Schreiber

Stefan Grötsch

Bryce Anton Moffat

Wei Li

Norbert Danz

Rolf Eckl

Dirk Michaelis

Wolfgang Niehoff

Vladimir Gorelik

Manfred Hibbing

Christoph Wächter

Wai Choi

Juergen Ihlemann

Mikhail Melnik

Dirk Zimmermann

Eike Berg

Norbert Pöpplow

Michael Flämmich

Ruth Weichenhain-Schriever

Michael Flaemmich

Uwe Frost

Robert Olma

Stefan Burgaß

A light mixing and folding lamp includes an LED assembly with two or more LED chips that direct light into the ingress end of a light mixing rod. The light mixing rod is positioned to pass through an aperture in a concave second reflecting element, and mixed light emerges from the egress end of the light mixing rod, where it is directed toward a first reflecting element positioned near a focal point of the second reflecting element. The first reflecting element reflects mixed light emerging from the egress end of the light mixing rod, folding the mixed light back toward a concave reflecting surface of the second reflecting element. The second reflecting element reflects light from the first reflecting element forward, where the light emerges from the lamp directed toward a subject to be illuminated.

Color temperature tunable LED-based lamp module

A beam shaper according to an embodiment of the present invention for a light source arrangement for generating a radiation profile includes a multitude of adjacently arranged optical beam-shaping elements, each belonging to one type of a plurality of different types with different optical characteristics. When illuminated together, the beam-shaping elements effect the radiation profile of the beam shaper and each include an intensity-modulating element and a refractive element.

Beam shaper

A light-emitting module is specified, comprising at least two light sources disposed on a common carrier. At least one of said light sources includes at least two LED chips. Each light source of the module is followed downstream by an optic body of an optical element, and the optic bodies are suitable for guiding electromagnetic radiation to a light exit surface of the optical element. An optical projection apparatus comprising such a light-emitting module is also specified.

Light-emitting module, particularly for use in an optical projection apparatus

The invention relates to an arrangement for optically determining the distance of a reflecting surface that can be used, in particular, for determining slight variations in distance such as can frequently occur in vibrating systems. Such an arrangement can also be used as optical microphone or hydrophone. The arrangement according to the invention is designed in this case such that light from a light source is directed onto a reflecting surface via a first optical fiber, and light reflected therefrom is directed onto at least one statically arranged optical detector via the first optical fiber or at least one further optical fiber. An optical element collimating in the direction of the reflecting surface is arranged between the reflecting surface and the one or more optical fibers. Furthermore, at least two optical elements focusing in the direction of the reflecting surface and whose optical axes are aligned parallel to the optical axis of the collimating optical element and are arranged at constant spacings from one another are arranged above the reflecting surface.

Arrangement for the optical distance determination of a reflecting surface

Growing community of inventors

Jena, Germany

Sergey Kudaev