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Pulse xenon lamp sealed by short distance molybdenum foil

A pulsed xenon lamp, molybdenum foil technology, applied in the direction of discharge lamps, gas discharge lamps, gas discharge lamp parts, etc., can solve problems such as difficulties, increased air tightness in the sealing area, lamp breakage, etc., and achieves high electro-optical conversion. Efficiency, excellent sealing performance, and the effect of eliminating fracture problems

Inactive Publication Date: 2006-12-27
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the xenon lamp using this long-range molybdenum foil sealing technology cannot meet the requirements of further miniaturization
Generally speaking, in order to obtain a higher electro-optic conversion efficiency, the pressure of the xenon gas in the lamp must be increased, which adds difficulties to ensure the airtightness of the sealing area, and it is necessary to compensate for the length of the sealing area by a larger length of the sealing area. Defects that are prone to air leakage caused by high internal pressure
This prevents the miniaturization of the finished lamp
[0005] Second, the mechanical strength of the finished lamp is not enough
Usually the lead joint of the finished product is a hollow cylindrical molybdenum cylinder, and the cross section of the cylinder is welded with the wire. This small area welding is not very firm.
The above molybdenum foil spot welding and wire welding are easy to fall off due to frequent pulling when the finished product is used
[0006] Third, in the case of non-water cooling, the xenon lamp is not easy to fix
Therefore, the user uses the sealing area as the part of the lamp stand, but the hollow sealing area in the middle cannot withstand greater pressure. If the light is placed with a little force, the lamp tube here will break

Method used

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  • Pulse xenon lamp sealed by short distance molybdenum foil
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  • Pulse xenon lamp sealed by short distance molybdenum foil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]This embodiment is a small-sized high-pressure, high-intensity sealed pulse xenon lamp made by all the sealing processes of the present invention. The outer diameter of the quartz lamp tube is 5 mm, the electrode spacing is 60 mm, and the total length of the finished lamp is 124 mm; the outer diameter of the quartz bubble is 2.8 mm. mm, the length of the unilateral sealing area is not more than 10mm, the ratio of the two is about 1:3.57; the xenon gas pressure in the lamp tube is 760 torr, and the air pressure in the bubble is 600 torr. The longitudinal section structure diagram of the sealing area of ​​this embodiment is as follows figure 2 As shown, the electrode 2 is made of cerium tungsten, and the rest of the components are the same as above figure 2 description of. The wire connection longitudinal section structure diagram of this embodiment is as follows: image 3 As shown, the previous text has image 3 It will be described in detail and will not be repeated...

Embodiment 2

[0030] This embodiment has been successfully used as a pump light source for lidar configuration. The outer diameter of the lamp tube is 7mm, the electrode spacing is 75mm, and the total length of the finished lamp is 178mm; the xenon gas pressure inside the lamp is 380 Torr, and the air pressure in the bubble is 608 Torr. The electrode 2 is a cerium tungsten electrode. In practical application, the energy storage capacitor is 100μF, the working voltage is 1.2KV, the current peak value is 756A, the discharge pulse width is 150μS, and it can work repeatedly at a frequency of 2-57Hz. The pulse xenon lamp of this embodiment has excellent electro-optic conversion efficiency and sealing performance.

Embodiment 3

[0032] This embodiment is an air-cooled small-sized pulsed xenon lamp with the reliable stand lamp part of the present invention. The outer diameter of the lamp tube 1 is 6 mm, the distance between electrodes is 50 mm, and the total length of the finished product is 108 mm; the xenon gas pressure in the lamp is 600 Torr, and the air pressure in the bubble is 615 Torr. Wherein the electrode 2 is a cerium tungsten electrode. This embodiment can be used for small-scale lasers without water cooling conditions. When installing the finished lamp, the user can use the position of the middle section 62 of the solid molybdenum rod to mount the lamp. As long as the forces at both ends of the lamp are uniform and synchronized, the lamp mount will not break.

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Abstract

A short range Mo foil sealing Xe flash lamp is formed by heat-sealing either end of the tube containing Xe with a Mo foil cylinder, an electrode is spot-welded on the internal end of the cylinder, inflating quartz bubble is inserted in the middle and a lead connector is spot-welded on the outer end characterizing that said lead connector is a solid cylinder with three sections of different diameters, in which, the wide one is welded in the Mo foil cylinder, the middle one is rather long sealed in the tube, the thin one is connected with external lead, single side length of the sealed zone is not greater than 3.6 times that of the outer diameter of the quatz bubble, the Xe pressure in the lamp is 380-760torr, the inflating air in the bubble is 600-615 torr, said thin section of the lead is rather short, the said of the thin cylinder is wrapped with a Ni plate, is an ogival cone.

Description

technical field [0001] The invention relates to a pulse xenon lamp, in particular to a short-range molybdenum foil sealed pulse xenon lamp. Background technique [0002] Small-scale solid-state lasers widely used in various fields often use small-scale pulsed xenon lamps as their pumping light sources. The function of the latter is to instantly convert the electric energy stored in the capacitor into radiant energy. In order to ensure a high conversion efficiency, the pressure inside the lamp is usually high; Internal high temperature, and instantaneous internal pressure up to dozens of standard atmospheric pressure. This requires that the lamp tube and other components of the small pulse xenon lamp should have high mechanical strength and thermal shock resistance, and more importantly, have good sealing performance. Compared with large and medium-sized pulsed xenon lamps, small-sized pulsed xenon lamps have higher sealing requirements, specifically: in the case of high pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J61/36H01J61/12H01J61/16H01J61/073H01J61/30H01S3/091
Inventor 蒋宝财林琤俞建华赵金娣毛伊荣孙国梅
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI