Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Osram Gesellschaft MIT Beschraenkter Haftung

Patent-treuhand-gesellschaft Fuer Elektrische Gluehlampen Mbh

Osram Gmbh

Osram Ag

Other

Osram Gesellschaft MIT Beschrankter Haftung

Andreas Genz

Bernd Lewandowski

Frank Werner

Johannes Buttstaedt

Manfred Deisenhofer

Walter Kiele

Alfred Langer

Leon Grabinski

Stefan Dunkel

Maik Hegewald

Jürgen Gräf

Wolfgang Greiler

Clemens Barthelmes

Hans-Werner Goelling

Walter Keile

Joachim Dirks

Hans Werner Golling

J Urgen Reichardt

Jurgen Reichardt

Hans-Werner G&ouml;lling

Martin Tüshaus

Niels Gerlitzki

A high-pressure discharge lamp may include a bulb, which surrounds a discharge volume, wherein a fill which contains mercury and a noble gas from the group consisting of neon, argon, krypton, xenon on its own or in a mixture is accommodated in the discharge volume, wherein the fill contains Gd in halide form in order to produce a color temperature of at least 7500 K.

High-pressure discharge lamp

A high-pressure discharge lamp may include a quartz glass bulb which encloses a discharge volume, and a fill which contains mercury and noble gas as well as metal halides being held in the discharge volume, wherein the fill contains both dysprosium halides and also oxyhalides of at least one of tungsten and mercury based on at least one of the halogens bromine and chlorine.

Dysprosium-halide-containing high-pressure discharge lamp

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.

Discharge lamp with an outer bulb surrounded by a wire gauze as explosion protection

In various embodiments, a high-pressure discharge lamp is provided. The high-pressure discharge lamp may include a ceramic discharge vessel which encloses a discharge volume, wherein a filling containing sodium halides, rare earth halides, mercury and inert gas is accommodated in the discharge volume, wherein the filling at the same time includes the rare earths Tm and Gd, the relative proportions between Gd and Tm, considered as a molar ratio, lying in the range 0.1 to 1.

Ceramic metal halide lamp having a high color temperature

Lamp

A metal halide fill for forming an ionizable fill comprises at least one inert gas, mercury and metal halides, the fill comprising the constituents V halide, Cs halide, Tl halide and halides of the rare earths. This fill may in particular be contained in the discharge vessel of a metal halide lamp.

Metal halide lamp with an ionizable fill with vanadium and rare earths, excluding manganese

Discharge lamp

A metal halide fill for forming an ionizable fill comprises at least one inert gas, mercury and metal halides, the fill comprising the constituents In halide, Na halide, Tl halide and halides of the rare earths. This fill may in particular be contained in the discharge vessel of a metal halide lamp.

Metal halide lamp

The elongate bulb () of the lamp, which defines a longitudinal axis (A), is sealed at mutually opposing ends by sealing parts (), to which an outer bulb is fixed, the ratio between the total length of the outer bulb LAKO and the inner length of the inner volume LEG being between 1.3 and 4, preferably 1.5 and 3.

Electric lamp having an outer bulb

A metal halide fill for forming an ionizable fill comprises at least one inert gas, mercury and metal halides, the fill comprising the constituents Hg halide, Na halide, Tl halide and halides of the rare earths. This fill may be contained in particular in the discharge vessel of a metal halide lamp which has an outer bulb.

Metal halide lamp for color applications for high wall loading with a long service life of at least 1500 hours and with a color temperature of over 5000 K: fill comprising at least the following constituents: firing gas, mercury, halogen, as well as indium, thallium, tin, no rare earth element or Na; the fill furthermore contains, as lithium replacement, hafnium, zirconium and tantalum, individually or in combination, the wall loading of the discharge vessel being at least 50 W/cm ; specific output based on die arc length is 50 to 90 W/mm; in particular, the concentration of the metals is as follows: lithium replacements: 0.20-4.0 &mgr;mol/ml; indium 0.3-3.0 &mgr;mol/ml.

Metal halide discharge lamp with a long service life

A metal halide discharge lamp having a bulb which contains a fill including an ignition gas, mercury, a halogen, lithium, indium, thallium and tin, and which is devoid of a rare earth element. Such fill serves to lengthen the service life of the lamp. The lamp is especially suitable for effect lighting.

Long-lasting metal halide discharge lamp

The metal-halide direct-current short-arc discharge lamp has a bulb (10) ch is asymmetrical with respect to a plane (1) perpendicular to a longitudinal axis (2) of the lamp, the bulb having an inner wall which is wider in the region surrounding the anode (4) of the lamp than in the region surrounding the cathode (5). Preferably, the lamp retains a fill system which includes cadmium and/or zinc. The lamp is particularly suitable for use in combination with an optical projection system (R), and especially when operating in horizontal position.

Direct-current short-ARC discharge lamp

The metal-halide direct-current arc discharge lamp has a fill system which as cadmium and/or zinc as components of the central fill in addition to an ignition gas, mercury, and a halogen. Preferably, the fill is retained in a bulb (10) which is asymmetrical with respect to a central plane (1) perpendicular to a longitudinal axis (2) of the lamp. The lamp is particularly suitable for use in combination with an optical projection system (R), especially when operating in horizontal position.

Direct-current arc lamp

A metal-halide high-pressure discharge lamp (1) with a discharge vessel (2) nd two electrodes (4, 5) has inside discharge vessel (2) an ionizable filling, which contains yttrium (Y) in addition to inert gas, mercury, halogen, thallium (Tl), hafnium (Hf), whereby hafnium can be replaced wholly or partially by zirconium (Zr), dysprosium (Dy) and/or gadolinium (Gd) as well as, optionally, cesium (Cs). Preferably, the previously conventional quantity of the rare-earth metal is partially replaced by a molar equivalent quantity of yttrium. With this filling system, a relatively small tendency toward devitrification is obtained even with high specific arc powers of more than 120 W per mm of arc length or with high wall loads. Thus, the filling quantity of cesium can be clearly reduced relative to a comparable filling without yttrium, whereby an increase in the light flux and particularly in the brightness can be achieved.

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Berlin, Germany

Andreas Genz