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High-pressure gas discharge lamp

A technology for high-pressure gas and discharge lamps, which is applied to high-pressure discharge lamps, gas discharge lamps, parts of gas discharge lamps, etc., and can solve problems such as crystallization, rapid corrosion of bulb walls, serious problems, etc.

Inactive Publication Date: 2004-11-03
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has the disadvantage of rapid corrosion and / or crystallization of the bulb wall and even worse

Method used

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  • High-pressure gas discharge lamp
  • High-pressure gas discharge lamp

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Embodiment Construction

[0018] The high-pressure gas discharge lamp 1 shown in the figure includes a quartz glass bulb 2 having a bulb wall 3 and a wall outer surface 15, and a space 4 surrounded by the bulb wall 3, in which two electrodes 5 are provided. The electrode 5 is made of a tungsten alloy containing 26 wt% rhenium. Alternatively, the electrode 5 can also be made of molybdenum, tungsten, rhenium, or a mixture containing tungsten, molybdenum and / or rhenium. The molybdenum foil 6 embedded in an airtight manner and the outer current conductor 7 are used to connect the respective electric plates 5 to the external points 14a and 14b in FIG. 3. The filling gas includes argon as a rare gas and mercury as a buffer gas, and the space 4 contains tin bromide, indium bromide and potassium bromide. The high-pressure gas discharge lamp 1 is configured as an alternating current (AC) lamp, but may also be configured as a direct current (DC) lamp. In the high-pressure gas discharge lamp 1 shown in the figure, th...

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PUM

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Abstract

The high-pressure gas discharge lamp (1) comprises a lamp vessel (2) having a wall (3) which is exposed to a wall load of at least 30 W / cm<2> during operation of the lamp, and a discharge space (4) in which a pair of electrodes (5) is disposed. The discharge space (4) has a filling which comprises mercury, argon, and halides (not fluorides) of tin and indium, to which filling an alkali metal halide is added, the alkali metal being potassium, rubidium, or cesium, and the halide being chlorine, bromine, or iodine. The high-pressure discharge lamp according to the invention has an improved resistance against corrosion and crystallization of the quartz glass wall (3).

Description

Technical field [0001] The invention relates to a high-pressure gas discharge lamp, which includes: [0002] Quartz glass bulb, which is closed in an airtight manner, has a space surrounded by a wall, and a pair of electrodes are provided in the space; [0003] The outer surface of the wall extends between the pair of electrodes; and [0004] The filling gas in the space includes rare gases, tin and indium halides. Background technique [0005] This high-pressure gas discharge lamp has been disclosed in the patent document DE 2455277 (equivalent to U.S. Patent No. 4,001,626. Since there is tin halide in the filling gas, the lamp produces higher intensity light during operation. The indium halide present in the filling gas is The color point and color temperature of the emitted light produced are close to the expected color point and color temperature to a certain extent. For the light bulb, for example, SiO 2 Made of quartz glass with a content of at least 95% by weight, the disa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S2/00F21Y101/00H01J61/12H01J61/20H01J61/88
CPCH01J61/125H01J61/827
Inventor W·范埃克
Owner KONINK PHILIPS ELECTRONICS NV