High-pressure lamp and associated operating method for the resonance mode of high-pressure lamps in the longitudinal mode and associated system

A method of operation and technology for high pressure discharge lamps, applied in related system fields, which can solve the problems of complex implementation of electronic ballasts, insufficient mixing, and inability to offset separation well enough

CN101802970AInactive Publication Date: 2010-08-11OSRAM GMBH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-08-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The high-pressure discharge lamp is designed for the resonance mode with acoustic excitation and is equipped with a discharge vessel, which has an inner volume with an inner length IL and a maximum inside diameter ID, and which is divided into a middle region with a constant inside diameter ID and two end regions with smaller inside diameters, wherein an electrode extends into the discharge vessel in the end region. Additionally, the discharge vessel has an aspect ratio of 2.5 to 8, particularly 3 to 6, wherein the inside diameter in the end region reduces across an end surface to at least 85% of ID, and wherein the gap width of the capillaries is no more than 20 [mu]m across a length of at least double the inside diameter IDK. The ratio between the surfaces formed by the inside diameter of the capillaries (IDK) and the diameter of the end surface is in the range of 0.06 to 0.12.
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Description

technical field

[0001] The invention relates to a high-pressure lamp according to the preamble of claim 1 , a related operating method for resonant operation of a high-pressure lamp in longitudinal mode, and a related system. The high-pressure lamp is a high-pressure discharge lamp with a ceramic discharge vessel and an aspect ratio of at least 2.5. Background technique

[0002] A high-pressure lamp and a related operating method for resonant operation of a high-pressure lamp in longitudinal mode as well as a related system are known from US 6,400,100. A method for finding the acoustic resonance frequency of the second longitudinal direction is described there. This is based on the idea that, when the frequency of excitation of the longitudinal modes decreases continuously, a resonant frequency can be found in the vertical ignition position due to the occurrence of a relative increase in the ignition voltage of the lamp. This shows that, with the aid of this method, the lo...

Examples

Embodiment Construction

[0061] exist figure 1 A metal halide lamp is schematically shown in , which has an outer bulb 1 of hard glass or quartz glass, which has a longitudinal axis and is sealed on one side by a disk-shaped melting point 2 . At the disk-shaped melting point 2, two outer power supply lines lead outwards (not visible). They end in the lamp base 5 . Sealed on both sides and made of PCA (Al 2 o 3 ) A ceramic discharge vessel 10 consisting of two electrodes 3 and a filling made of a metal halide is inserted axially into the outer bulb.

[0062] exist figure 2 A schematic diagram of a discharge vessel 10 with a relatively high aspect ratio ID / IL is shown in . The discharge vessel 10 has a cylindrical central part 11 and two end parts 12, said discharge vessel having a given inner diameter ID=2*IR and a given inner length IL, where IR is the inner radius. An electrode 3 is arranged on the end 12 of the discharge vessel, said electrode being connected to an internal feeder 6 by means ...