Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Patent-treuhand-gesellschaft Fuer Elektrische Gluehlampen Mbh

Osram Gmbh

Osram Ag

Osram Gesellschaft MIT Beschraenkter Haftung

Osram Gesellschaft MIT Beschrankter Haftung

Osram Sylvania Inc.

Karlsruher Institut Fur Technologie

Siteco Gmbh

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

Klaus Stockwald

Paul Braun

Frank Vollkommer

Steffen Walter

Andreas Kloss

Stefan Jüngst

Herbert Weiβ

Carsten Schuh

Lothar Hitzschke

Dieter Lang

Peter Munzert

Dietrich Fromm

Dirk Salz

Roland Hüttinger

Ute Liepold

Thorsten Steinkopff

Rainer Kling

Herbert Kästle

Stefan Kotter

Reinhard Schaefer

Mark Schürmann

Jens Clark

Lothar Hitzscke

Patrick Mueller

Bernhard Schalk

Michael Meisser

Herbert Weiss

Wolfgang Poeppel

Herbert Weiß

Patrick Müller

A reflector element and a method for manufacturing a reflector element are disclosed. In an embodiment the reflector element includes a plastic substrate and a silver layer arranged on the plastic substrate. The reflector element further includes a first barrier layer arranged on the silver layer, wherein the barrier layer has an at least 15 nm-thick oxide layer and a second barrier layer arranged on the first barrier layer, wherein the barrier layer includes siloxane, and wherein a thickness of the second barrier layer is at least 250 nm and at most 450 nm.

Reflector element and a method for manufacturing same

A bushing for a high-pressure discharge lamp, which is suitable for connecting an electrode in the interior of a ceramic discharge vessel to a supply lead in a gastight manner on the exterior of the discharge vessel, wherein the bushing is an electrically conductive ceramic composite consisting of a mixture of LaBand at least one second material from the group AlO, DyAlO, AlN, AlON and DyOis disclosed.

Ceramic bushing for a high-pressure discharge lamp

A high-pressure discharge lamp may include a discharge vessel, which encloses a discharge volume, wherein a filler is housed in the discharge volume, wherein the discharge vessel is equipped with an end which is tubular and in which a two-part feedthrough is sealed by means of glass solder, wherein an electrode is attached to the feedthrough, which protrudes into the discharge volume, wherein the feedthrough is composed of a front part and a rear part, wherein the rear part is manufactured from niobium material and the front part is manufactured from iridium.

High-pressure discharge lamp

A high-pressure discharge lamp may include an elongate ceramic discharge vessel, at the ends of which an electrode system with an electrode tip pointing towards the discharge is mounted in a seal, the seal being tubular, the discharge vessel having an aspect ratio of at least 1.5, the discharge vessel having a metal halide fill and a wall load of more than 25 W/cm, wherein the lamp is configured for operation with longitudinal acoustic modulation, the specific rated power of the entire outer surface area of the discharge vessel lying between 17 and 22 W/cm, while at the same time the wall load in a subregion of the surface area, which extends between the tips of the electrodes, lies in the range of between 28 and 40 W/cm.

High-pressure discharge lamp for operation with longitudinal acoustic modulation

In various embodiments, an electrodeless high intensity discharge lamp is provided, which may include a bulb containing a fill mixture for generating a light emission when excited by microwave energy; and at least two applicator arms for coupling the microwave energy to the fill mixture, the at least two applicator arms being separated by at least one delay line, the at least one delay line comprising a stripline structure.

Compact delay line structures for field applicators for operation of electrodeless gas discharge lamps

High pressure discharge lamp () with improved ignitability. A spiral pulse generator () that is directly mounted inside the outer piston () of the lamp is used for igniting the high pressure discharge lamp.

High-pressure discharge lamp with improved ignitability and high-voltage pulse generator

An electrodeless high pressure discharge lamp is described. The lamp includes a resonating body configured to provide microwave energy and a discharge vessel, the discharge vessel containing a fill that forms a light-emitting plasma when receiving the microwave energy. The lamp further includes an outer bulb surrounding the discharge vessel. The lamp further includes a support structure within the outer bulb, the support structure comprising a plurality of wires forming a cage, wherein each end of each of the plurality of wires are directed to either end of the discharge vessel. The lamp further includes a first wire structure configured to hold the discharge vessel in place within the cage and surrounding each end of the discharge vessel.

Electrodeless high pressure discharge lamp

The lamp uses a sealing system with a ceramic supporting element () having a short length LA together with a W&#x2014;Nb leadthrough part () and a specially adapted glass solder (), which is based on an AlOrare earth oxide system. In this case, the W part is accommodated in the supporting part over a length LW of 1 mm, and the aspect ratio LW/DUW, formed from the length LW and the diameter DUW of the W part, is at least 10.

Laminates, which are used for cooling the discharge vessel, are fitted to the seals of the ceramic discharge vessel. They are an integral part of the seal.

High-pressure discharge lamp having cooling laminates fitted at the end of the discharge vessel

The invention relates to a mercury-free low pressure discharge lamp with a discharge vessel having an ionizable filling. The surface temperature of the discharge vessel, and thus the temperature of the ionizable filling, can be adjusted at least in some sections such that an emitting substance can produce the radiation required for the excitation of the luminescent substance. The temperature of the fluid is preferably adjusted in a temperature control circuit, using a temperature sensor, a pump and a heating device.

Low pressure discharge lamp

The high pressure discharge lamp is fitted with a discharge vessel that has an inside volume with an inside length IL and a maximum inside diameter ID, and that is subdivided into a middle region of constant inside diameter ID and two end regions of variable inside diameter, an electrode projecting into the discharge vessel in the end region in each case. In addition, the discharge vessel has an aspect ratio of 2.5 to 8, preferably 3 to 6, the end region exhibiting a given length LRD in which the inside diameter is reduced to at least 85% of ID.

High pressure lamp and associated operating method for resonant operation of high pressure lamps in the longitudinal mode, and an associated system

The operating method is based on the simultaneous application of FM and AM. In this process, the fundamental frequency of the AM is derived from at least one, preferably the second, longitudinal mode. In continuous operation of the lamp, the color temperature is set for a prescribed power by setting the AM degree controllably.

Operating method for the resonant operation of high-pressure lamps in longitudinal mode, and an associated system and electronic ballast

The metal halide lamp has a ceramic discharge vessel and contains two groups of metal halides: a first group made up of the emitters and a second group made up of the wetters. The second group comprises at least one of the metal halides of Mg or Yb.

Metal halide lamp

The operating method is based on the simultaneous use of FM and AM and is distinguished by passing through a number of steps which are used to find an optimum frequency for the AM and, in addition, to define an optimum AM level. An electronic ballast which has a memory module which can be overwritten is used for implementation.

Operating method, electronic ballast and system for resonant operation of high pressure lamps in the longitudinal mode

The operating method is based on the simultaneous application of FM and AM, and is distinguished by passing through three operating states, specifically a warm-up phase, an impressing phase and the continuous operation. In the warm-up phase, the f_hor is selected as fundamental frequency of the AM, or an AM is dispensed with. The impressing phase is distinguished by a temporally changing AM deviating from the conditions of the continuous operation and having an AM degree different from zero. In the continuous operation, constant conditions of the AM in the case of which the f_hor is reached as fundamental frequency of the AM, and the AM degree is at 20 to 25% are characteristic.

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Germering, Germany

Klaus Stockwald