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High-pressure discharge lamp

A technology of high-pressure discharge lamps and tungsten electrodes, applied in the direction of discharge lamps, gas discharge lamps, parts of gas discharge lamps, etc., can solve the problem of reducing the contact area between the cut surface of molybdenum sheet and quartz glass, affecting the fusion state of quartz glass, and not solving the problem Molybdenum sheet cutting surface and other problems to achieve the effect of eliminating multi-boundary phenomenon, inhibiting peeling phenomenon, and improving service life

Pending Publication Date: 2020-05-05
永州维尔利电子有限公司
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Problems solved by technology

This is because the above-mentioned existing technology cannot solve the problem that the cut surface of the molybdenum sheet has a large difference in surface roughness from the front and back surfaces of the molybdenum sheet
On the one hand, if the roughness of the cut surface of the molybdenum sheet is poor, it will directly affect its fusion state with the quartz glass
If the roughness is too large, it is not conducive to the integration of quartz glass, and if the roughness is too small, the contact area between the cut surface of the molybdenum sheet and the quartz glass will be reduced

Method used

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, those of ordinary skill in the art do not say that all other embodiments obtained on the premise of not paying creative efforts belong to the protection scope of the present invention.

[0028]A high-pressure discharge lamp, the structure of which includes: two tungsten electrodes (2) are arranged oppositely in a quartz container (1), and one end of the tungsten electrode (2) is buried in a side tube (11), and is connected with the quartz The molybdenum sheet or molybdenum alloy sheet (3) (hereinafter referred to as molybdenum sheet) with close expansion coefficient and the external power wire (hereinafter referred to a...

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Abstract

The invention relates to a molybdenum sheet and a high-pressure discharge lamp adopting the molybdenum sheet. The molybdenum sheet is provided with front and back surfaces (31), a side surface (32) and a cutting surface (33). The surface roughness of each surface forming the molybdenum sheet approaches to be uniform and consistent, and the surface roughness of the front and back surfaces (31), theside surface (32) and the cutting surface (33) of the molybdenum sheet is Ra0.35 to 0.75. Furthermore, the thickness near the cutting surface (33) of the molybdenum sheet is reduced to 10 to 40% of the initial thickness of the molybdenum sheet. The invention further relates to the high-pressure discharge lamp comprising the molybdenum sheet. When the molybdenum sheet is applied to the high-pressure discharge lamp, the phenomenon that quartz glass and the molybdenum sheet are stripped or broken due to the starting point near the cutting surface of the molybdenum sheet can be prevented, and theservice life of the high-pressure discharge lamp is prolonged.

Description

technical field [0001] The present invention relates to the field of optoelectronics, in particular to a molybdenum sheet or a molybdenum alloy sheet mainly composed of molybdenum (hereinafter referred to as a molybdenum sheet), and also relates to a high-pressure discharge lamp using the molybdenum sheet. Background technique [0002] High-pressure discharge lamps are widely used in optical equipment such as projectors, exposure machines, and stage lamps. figure 1 The structure of the high-pressure discharge lamp is shown: two tungsten electrodes (2) are arranged opposite to each other in a quartz container, and one end of the tungsten electrode (2) is embedded in the side tube (11) of the quartz container, and is expanded through a quartz container. Molybdenum sheets (3) with close coefficients are connected to external power supply wires (4). The two ends (36, 35) of the molybdenum sheet (3) are respectively connected to the tungsten electrode (2) and the molybdenum rod ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J61/073H01J61/36
CPCH01J61/0732H01J61/366
Inventor 皮天明李亚娜
Owner 永州维尔利电子有限公司
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