CN201877402U - Electrode configuration - Google Patents
Electrode configuration Download PDFInfo
- Publication number
- CN201877402U CN201877402U CN2010206202678U CN201020620267U CN201877402U CN 201877402 U CN201877402 U CN 201877402U CN 2010206202678 U CN2010206202678 U CN 2010206202678U CN 201020620267 U CN201020620267 U CN 201020620267U CN 201877402 U CN201877402 U CN 201877402U
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- tungsten filament
- tungsten
- electrode
- electrode configuration
- inner layer
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Abstract
The utility model discloses an electrode configuration, which comprises a tungsten rod, a tungsten filament inner layer wound at one end of the tungsten rod, a tungsten filament outer layer wound outside the tungsten filament inner layer and an electrode head which is arranged on the tungsten rod and shares the same end with a tungsten filament; the tungsten filament inner layer adopts a one-way spiral winding manner; the winding direction of the tungsten filament outer layer is opposite to that of the tungsten filament inner layer; and the electrode head is in a bullet shape. The electrode configuration disclosed by the utility model has the advantages that the electrode shape and the stability of the polar distance in the service life are remarkably improved, the brightness of a lamp is improved and the projection illumination quality can be improved.
Description
Technical field
The utility model discloses a kind of electron discharge structure, particularly a kind of electrode configuration.
Background technology
Little Display projector is to be higher than 100W/cm by the tube wall load with short arc ultrahigh pressure mercury lamp electric arc tube
2The quartz glass bulb pipe, enclose by axial opposed tungsten electrode, and molybdenum foil the electrode assemblie that molybdenum matter lead-out wire assembly welding forms, and packed density is higher than 0.15mg/mm in cavity
3Mercury, about 10
4The inert gas of Pa and micro-halogen are made as operation material.
The pole span L of this lamp may be as little to 1mm, has the point-source of light feature on the relative meaning.During work in the quartz bulb shell, electrical discharge arc is set up and is kept at two eletrode tips, and this moment, eletrode tip arc attachment temperature can reach 3200 ℃, has stronger continuous radiation at 250nm to infrared band, quartz bulb shell need bear about 1000 ℃ high temperature.Publication number is CN360334A, and the patent of invention of CN1466169 has all been explained the manufacture method of this lamp.
In actual applications, this ultrahigh pressure mercury lamp electric arc tube (calling wick in the following text) is solid in parabola or ellipsoidal reflector by glue, and makes arc center be in the reflector focal point position, makes projection lamp (calling whole lamp in the following text), to obtain the output of directional light or focused light.
Above-mentioned whole lamp is used to LCD, DLP optical projection system usually respectively.
In said lighting system, the light of lamp output quantity, quality and stability have determined screen intensity, the colourity of projection, and the economy of euphorosia and application, and the pole span of wick and electrode stability then are basic assurances.This is because the short arc ultrahigh pressure mercury lamp is a kind of HID light source of working under the utmost carrying ability near material, the halogen tungsten circulation of setting up down in working order can effectively prevent from electrode, particularly near the tungsten that is evaporated the short arc attachment point is deposited on the light decay that inner wall causes cell-shell melanism and lamp, and practical application takes measures such as air blast cooling to prevent the overheated of lamp.But the electrode sputter the startup stage of lamp, the inhomogeneities of the interior Temperature Distribution of lamp and the high strength convection current of gas under the operating state, particularly directly related with electrode tip shape and pole span interpolar Electric Field Distribution changes, and can cause the drift of electrode tip change of shape and arc attachment.In addition, the light radiation of short arc ultrahigh pressure mercury lamp electric arc is extremely uneven at two interpolars, but the polar spot of electric arc (radiation density peak) is always attached to the shortest near surface of two inter-electrode space distance.
The short arc ultrahigh pressure mercury lamp not only needs to carry out accurate optical match by control electrode shape and pole span and application system, and the photoelectric parameter of itself and performance are subjected to the influence of electrode shape and pole span to a great extent.The focus of P or E type reflector is infinitesimal in theory, but electric arc spatially roughly is the spindle of an about 1mm of length, the inhomogeneities of arc radiation density and variability in addition, the repeatability of its equivalent light center and reflector focal point, accurate control when not only needing whole lamp to assemble, and need the stable of electric arc just can keep.
In addition, little demonstration broad screen projective system is to utilize certain reflector that optical system is tentatively compiled and exported to radiation of light source light, through further projecting image by image-carrier after the arrangement processing.This system is to the requirement of light source paper " analysis of crystal projection light source technology " (modern demonstration the inventor, 2007.09) in elaborate, can on the size of 0.1mm and locus dimension, produce appreciable impact by the arc length of pole span decision as can be known to projector's lighting quality (brightness and the uniformity etc.).
The utility model content
Goal of the invention: at the deficiencies in the prior art and technical problem to be solved, the utility model discloses a kind of photoelectric parameter that improved, use stable electrode configuration.
Technical scheme: the utility model discloses a kind of electrode configuration, tungsten filament internal layer, the tungsten filament internal layer that comprise the tungsten bar, is wrapped in tungsten bar one end is that one-way spiral twines; Be wrapped in the tungsten filament skin in the tungsten filament internal layer outside, the outer field winding direction of tungsten filament is opposite with the tungsten filament internal layer, be arranged on the tungsten bar and and the electrode tip of the same end of tungsten filament, the profile of electrode tip is a bullet shape.
Have the electrode tip of closely knit " sub warhead " type of metallographic structure and the tungsten wire ring radiator of high-specific surface area, and, appropriately coordinated the sharp contradiction of short arc ultrahigh pressure mercury lamp electrode heat load load and heat lag problem by the overall ratio coupling.
Beneficial effect: the disclosed a kind of electrode configuration of the utility model has the following advantages: the stability of electrode shape and pole span significantly improves in the lifetime, has improved the brightness of lamp, has promoted the projection lighting quality.
Description of drawings
Fig. 1 is the cutaway view of electrode configuration;
Fig. 2 is the structural representation of electrode configuration.
Embodiment
The utility model is further explained below in conjunction with accompanying drawing.
The utility model discloses a kind of electrode configuration, the tungsten filament internal layer 2, tungsten filament internal layer 2 that comprise tungsten bar 1, are wrapped in tungsten bar 1 one ends are that one-way spiral twines; Be wrapped in the tungsten filament skin 3 in tungsten filament internal layer 2 outsides, the winding direction of tungsten filament skin 3 is opposite with tungsten filament internal layer 2, be arranged on the tungsten bar 1 and and the electrode tip 4 of the same end of tungsten filament, the profile of electrode tip 4 is a bullet shape.
After above-mentioned electrode configuration base substrate is made, can adopt electric spark or laser processing technology to carry out the electrode tip end and found moulding, electrode tip after the processing has the end profiles of likeness in form " sub warhead ", found the closely knit pure tungsten structure in back and with the close-connected wire ring in end, and the tail end rounding of wire ring, noresidue silk head.
The utility model provides a kind of thinking and method of electrode configuration; the method and the approach of this technical scheme of specific implementation are a lot; the above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications; these improvements and modifications also should be considered as protection range of the present utility model, and all available prior art of each part not clear and definite in the present embodiment is realized.
Claims (5)
1. electrode configuration, it is characterized in that, comprise tungsten bar (1), be wrapped in tungsten bar (1) one end tungsten filament internal layer (2), be wrapped in the tungsten filament skin (3) in tungsten filament internal layer (2) outside and be arranged on that tungsten bar (1) is gone up and with the electrode tip (4) of the same end of tungsten filament.
2. a kind of electrode configuration according to claim 1 is characterized in that, described tungsten filament internal layer (2) twines for one-way spiral.
3. a kind of electrode configuration according to claim 1 and 2 is characterized in that, the winding direction of described tungsten filament skin (3) and tungsten filament internal layer (2) are opposite.
4. a kind of electrode configuration according to claim 1 is characterized in that, described tungsten bar (1), tungsten filament and electrode tip (4) welding fabrication.
5. according to claim 1 or 4 described a kind of electrode configurations, it is characterized in that the profile of described electrode tip (4) is a bullet shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206202678U CN201877402U (en) | 2010-11-24 | 2010-11-24 | Electrode configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206202678U CN201877402U (en) | 2010-11-24 | 2010-11-24 | Electrode configuration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877402U true CN201877402U (en) | 2011-06-22 |
Family
ID=44165313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206202678U Expired - Fee Related CN201877402U (en) | 2010-11-24 | 2010-11-24 | Electrode configuration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877402U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110946648A (en) * | 2018-09-26 | 2020-04-03 | 杭州启富惠医疗器械有限公司 | Deep thermosetting electrode with bilateral semi-ring contacts |
-
2010
- 2010-11-24 CN CN2010206202678U patent/CN201877402U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110946648A (en) * | 2018-09-26 | 2020-04-03 | 杭州启富惠医疗器械有限公司 | Deep thermosetting electrode with bilateral semi-ring contacts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Electrode configuration Effective date of registration: 20131216 Granted publication date: 20110622 Pledgee: Bank of Jiangsu, Limited by Share Ltd, Yixing branch Pledgor: Jiangsu Cnlamp Optoelectronic Technology Co., Ltd. Registration number: 2013320000018 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20161124 |