SU907638A1 - Pulsed gas-discharge tube - Google Patents

Description

(5) PULSE DISCHARGE LAMP

one

The invention relates to high-intensity light sources, namely to pulsed gas discharge lamps.

A gas-discharge source of radiation is known, which contains nodes with electrodes, and an optically transparent flask filled with working gas, in which oxygen is added in an amount of 3-20 vol.% L to increase the electrical strength and energy input to the working gas.

The disadvantage of this lamp is that with a slight increase in the electrical strength, the radiation characteristics of the source deteriorate. In addition, in order to obtain radiation sources with the same characteristics, an accurate dosage of oxygen addition to the working gas is necessary, which leads to a significant condition for their manufacture.

The closest technical solution to the present invention is a pulsed gas-discharge light source with an optically transparent tubular bulb and electrode assemblies, in which a dielectric plate is placed bentally bifilically 1: 2 to increase penetration strength.

A disadvantage of this device is the low electrical strength, since its increase is achieved by lengthening the discharge channel by inserting a dielectric plate into the lamp bulb. However, the electrical strength increases nonlinearly with an increase in the length of the discharge

channel ts. The dielectric plate in the bulb of the light source disrupts the distribution of the light flux and complicates the manufacturing technology.

The purpose of the invention is to increase the electrical strength of a pulsed gas discharge lamp.

Claims (2)

This goal is achieved by the fact that the pulsed gas discharge bottom 39 lamp, which includes an optically transparent point filled with working substance and electrode assemblies, is equipped with at least one metal screen covering the cylinder along the length of its electrode assembly and electrically connected to it, and an insulating layer, located on the outer side surface of the screen and on its end from the discharge gap. The drawing shows the design of the proposed lamp (for simplicity, one electrode assembly). The electrode area of electrode assembly 1 is covered on the outer surface of the optically transparent balloon 2 of the lamp by a metal screen 3 with an insulating layer. The metal screen 3 is electrically connected to the external output of the electrode assembly 1. When the lamp is turned on under voltage, the electric field between the internal electrode and the screen mounted on the surface of its balloon is zero because the screen and electrode are electrically interconnected. The increase in electrical strength and the prevention of spontaneous triggering of the lamp lies in the fact that the region with respect to electrical strength (made on the screen balloon) is removed from the internal volume of the lamp. The discharge voltage across the outer surface of the lamp is significantly higher than the discharge voltage between the electrodes inside. Thus, the discharge on the external surface of the lamp at the operating voltage is excluded. In operating modes, the screen does not affect the characteristics of the controlled discharge. An experimental test in standard illuminators of IFP-20000, IFP-8000, IFP-5000 lamps and lamps of the proposed design based on them showed that the electrical strength of the lamps of the proposed design is two times higher than the existing lamps. 4 Lamps operating in grounded and insulated from grounded parts of the illuminators are in significantly different conditions for the effects of voltage on them. When grounding the illuminator and one of the electrodes, lamps are used in which the grounded electrode is previously known and the other is proposed. In devices with an illuminator insulated from grounded parts, both lamp electrodes are executed equally. So, the pulse of the gas discharge from the lamp of the proposed design has a dielectric strength twice as large as the corresponding types of lamps of known designs while maintaining other characteristics of the controlled discharge and radiative characteristics. The proposed solution is distinguished by simplicity and manufacturability and can be successfully applied both in laboratory conditions and. in mass production. An impulse gas discharge lamp, a balloon filled with a working substance from an optically transparent material and hermetically mounted electrode nodes at opposite ends, so that, in order to increase the electrical strength, it is equipped with at least one metal screen covering the cylinder along the length of the corresponding electrode assembly and electrically connected to it, and an insulating layer located on the outer side surface of the screen and on its end with Oron discharge gap. Sources of information taken into account in the examination 1. USSR author's certificate number, cl. H 01 J 61/16, 1970 2. USSR author's certificate No. 35569A, cl. H 01 J 61/90, 1971. // / U // // / / / / /, / // / i / / -Y //////////. / 4 // / U