Patent
Metal halide discharge lamp
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TLDR
A metal halide lamp of the present invention comprises a luminous tube alone without any outer bulb, the tube containing metal halides such as neodymium halides (NdX3), dysprosium (DyX3) and cesium halide (CsX) in a total amount by mole of 1×10-6 to 8× 10-6 mol/cc and the following molar ratios: ##EQU1## as discussed by the authors.Abstract:
A metal halide lamp of the present invention comprises a luminous tube alone without any outer bulb, the luminous tube containing metal halides such as neodymium halides (NdX3), dysprosium halides (DyX3) and cesium halides (CsX) in a total amount by mole of 1×10-6 to 8×10-6 mol/cc and the following molar ratios: ##EQU1## as well as rare gas serving as starting auxiliary gas and mercury serving as buffer gas This structure permits a predetermined vapor pressure of the metal halides sealed in the luminous tube to be obtained without increasing the wall load, as well as the formation of a metal halide lamp having a long life and good color characteristicsread more
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PatentDOI
Metal-halide lamp
Josephus Christiaan Maria Hendricx,Joseph L. G. Suijker,Antonius A. Duisters,Fransiscus Arnoldus Vermeulen +3 more
TL;DR: In this paper, a metal-halide lamp with a discharge vessel having a ceramic wall was described, where the discharge vessel comprises two electrodes whose tips are arranged at a mutual distance EA. The relation EA/Di > 5 is complied with.
Patent
Methal halide lamp comprising a shaped ceramic discharge vessel
Josephus Theodorus Van Der Eyden,Oscar G. Stappers,Jacobus Johannes Franciscus Gerardus Heuts +2 more
TL;DR: In this article, a metal halide lamp with a ceramic discharge vessel has been proposed, where the discharge vessel is a spheroid-like shape with a length L 1 and largest outer diameter d 2, and the vessel further has curved extremities and openings at the curved extremity which have a curvature r 3.
Patent
Lightening device for metal halide discharge lamp
TL;DR: A metal halide discharge lamp with which essentially permits disusing mercury is provided in this paper, which consists of a refractory and transparent hermetic vessel, a pair of electrodes fixed to the hermetic vessels, and a discharge medium sealed in the hermetric vessel and containing a first halide, a second halide and a rare gas.
Patent
High-Pressure Discharge Lamp
TL;DR: In this article, a high-pressure discharge lamp for vehicle headlights has a power consumption of less than 100 watt and the minimum distance (A) between the respective molybdenum film and the end of the electrode (11, 12 ) which is connected to one of the electrodes and protrudes into the inner region ( 106 ) of the discharge recipient ( 10 ) is more than 5 mm.
Patent
Discharge lamp with high color temperature
TL;DR: A lamp includes a discharge sustaining fill which includes cesium halide, one of indium, thallium, gadolinium, and a rare earth halide component selected from dysprosium and neodymium as discussed by the authors.
References
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Patent
High pressure metal vapor discharge lamps of improved efficacy
Daniel M. Cap,William H Lake +1 more
TL;DR: In this article, high pressure discharge lamps containing a fill of mercury and metal halides, having a power input of 250 watts or below and having high end temperatures without excessively obstructing the transmission of light and without creating excessive thermal losses through radiation and conduction.
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Electrodeless light source having rare earth molecular continua
TL;DR: In this article, the authors describe electrodeless lamp apparatus with a termination fixture coupled to the envelope of a rare-earth compound fill, which is used to create an electrical condition for exciting the fill.
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Metal halide lamp having vacuum shroud for improved performance
TL;DR: In this paper, a metal halide lamp with a vacuum shroud is described, and the vacuum shroud substantially eliminates the detrimental catephoresis effects of operating such a lamp from a low frequency alternating current (A.C.) source or direct current (D.C).
Patent
High pressure mercury vapor discharge lamp with metal halide additives
Dobrusskin A,Leyendecker H +1 more
TL;DR: A high pressure mercury vapor discharge lamp having a quartz glass discharge tube and refractory metal electrodes in an envelope containing metal halides and an inert gas as the additive fill is described in this paper.
Patent
Rare earth halide light source with enhanced red emission
TL;DR: In this paper, a high pressure electric discharge lamp with high efficacy, good color rendering, and a warm color temperature was proposed. But the desired properties were attained by utilizing as fills the rare earth iodides in conjunction with calcium halides and, or sodium halides.