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Starting aid for hid lamp

A technology of auxiliary electrodes and light sources, applied in the field of starting auxiliary devices, can solve problems such as unsatisfactory solutions, expensive manufacturing, and reduced utilization rate

Inactive Publication Date: 2010-01-13
OSRAM SYLVANIA INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Second, the photons generated by the DBD have to pass through the wall of the discharge vessel (made of quartz) and can be absorbed, thus reducing its utilization
[0005] While all of these various techniques have proven useful, they provide an unsatisfactory solution to the problem of reliable ignition and are expensive and / or difficult to manufacture

Method used

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  • Starting aid for hid lamp
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Embodiment Construction

[0013] For a better understanding of the present invention and its other and additional objects, advantages and capabilities, reference is made to the following disclosure and appended claims taken in conjunction with the above-mentioned accompanying drawings.

[0014] Referring now more specifically to the accompanying drawings, figure 1 An arc discharge light source 10 is shown in , comprising a translucent body 12 having a hollow 14 and oppositely disposed ends 16 , 18 . Body 12 is preferably formed from quartz.

[0015] A cathode lead-in 20 is located at the end 16 and terminates at a first end 22 in a cathode electrode 24 within the hollow 14 and at a second end 26 in a connection 28 for power supply. An anode lead-in wire 30 is located at the other end 18 and terminates at a first end 32 in an anode electrode 34 within the hollow 14 and at a second end 36 in a connection 40 for power supply. Typically, the cathode and anode electrodes are tungsten and are secured to mo...

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Abstract

An arc discharge light source (10) comprises a translucent body (12) having a hollow center 14 and oppositely disposed ends (16, 18). A cathode lead-in 20 is positioned in one of the ends (16) and terminates at a first end (22) in a cathode electrode (24) within the hollow center (14) and a second end (26) in a connector (28) for a power supply. An anode lead-in 30 is positioned in the other of the ends (18) and terminates at a first end (32) in an anode electrode (34) within the hollow center (14) and at a second end (36) in a connector (40) for a power supply. A space (42) between the cathode electrode (24) and the anode electrode (34) within the hollow center (14) defines an arc gap. An arc generating and sustaining medium (43) is provided within the hollow center (14) and a starting aid (41) comprising an auxiliary electrode (44) substantially surrounds the anode electrode (34) and is positioned solely on the external surface (46) of the body (12) and is electrically connected to the cathode lead-in (20).

Description

technical field [0001] The present invention relates to an arc discharge light source, and more particularly to a starting aid for such a light source. More particularly, it relates to a start-up aid that relies on dielectric barrier discharge (DBD) and generation of vacuum ultraviolet photons (VUV). Background technique [0002] The use of high intensity arc discharge tubes as a light source is a viable option for producing effective lighting, and they have been used as such for many years. Basically they are realized in two forms, usually designated as low pressure or high pressure depending on their construction. Typically, low-pressure light sources use argon as part of the arc creation and maintenance medium. Since these light sources use electrodes to define an arc gap between them, they must employ a ballast of one kind or another to control power flow in two extreme cases, i.e., the device presents an open-circuit-like condition prior to start-up, and Equivalent t...

Claims

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Application Information

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IPC IPC(8): H01J61/09H01J61/36
Inventor M·科斯特伦H·阿德勒
Owner OSRAM SYLVANIA INC
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