CN103733301B - Short arc high-pressure discharge lamp - Google Patents
Short arc high-pressure discharge lamp Download PDFInfo
- Publication number
- CN103733301B CN103733301B CN201280038924.XA CN201280038924A CN103733301B CN 103733301 B CN103733301 B CN 103733301B CN 201280038924 A CN201280038924 A CN 201280038924A CN 103733301 B CN103733301 B CN 103733301B
- Authority
- CN
- China
- Prior art keywords
- anode
- discharge lamp
- short arc
- pressure discharge
- region
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0735—Main electrodes for high-pressure discharge lamps characterised by the material of the electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/84—Lamps with discharge constricted by high pressure
- H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
Landscapes
- Discharge Lamp (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
The present invention improves the short arc high-pressure discharge lamp of the shape stability of anode, resistance to vapo(u)rability and processability.A kind of short arc high-pressure discharge lamp, it is characterized in that, possesses discharge vessel (2), the anode (4) formed by the tungsten based material comprising potassium, with negative electrode (3), aforesaid anode (4) comprises the functional surfaces region (4a) that aforesaid anode (4) interacts with electric arc, and the body region (4b) adjacent with aforementioned functional surfaces region (4a), wherein, between aforementioned functional surfaces region (4a) and aforementioned body region (4b) in the direction parallel with the longitudinal axis of aforesaid anode (4) (Z), the grain size existence of the aforementioned tungsten based material of aforesaid anode (4) sharply changes.
Description
Technical field
The present invention relates to more than the short arc high-pressure discharge lamp lighted under the nominal power of 1kW.
Background technology
This lamp is generally used for the projector (projector) of cinema, or for the photoetching technique in the manufacture of quasiconductor and liquid crystal display.Such short arc high-pressure discharge lamp comprises the anode and negative electrode that are arranged in discharge vessel.The fill be generally packaged with the gaseous mixture comprising rare gas or rare gas in this discharge vessel, being generally argon (Ar), Krypton (Kr) and/or xenon (Xe).In most cases, this fill generally also comprises 1mg/cm3～81mg/cm3The hydrargyrum (Hg) of amount.Anode in such short arc high-pressure discharge lamp is generally formed by tungsten based material.
In short arc high-pressure discharge lamp, being clashed into anode by electronics, anode is heated to high temperature (between usual 2000 DEG C～3000 DEG C).As a result, anode material evaporates, and can be deposited on the inwall of discharge vessel.This anode material that deposited makes discharge vessel muddy or blackout, and then, thus being absorbed from a part for the light beam of this discharge lamp, practical light beam can be weakened.Such impact generally becomes more and more significant in the life expectancy of discharge lamp.Therefore, along with the working time of this discharge lamp increases, anode material evaporates, and thus practical light beam can be weakened.
Affecting on basis above-mentioned, total wear life of this short arc high-pressure discharge lamp shortens and also exists to be likely to weaken to be affected with the further of light beam in fact.Such as, the quality of negative electrode constantly deteriorates along with duration of work.Particularly, negative electrode is wear down gradually, and the anterior front end of negative electrode broadens further.But, particularly have in the short arc high-pressure discharge lamp of the fill comprising hydrargyrum, total life expectancy of this discharge lamp is a crucial factor by the evaporation of anode material.
When particularly encapsulation pressure is higher than 3bar, the evaporation of the material of this anode increases along with encapsulation pressure and becomes more significantly.The encapsulation pressure of so high rare gas or rare gas mixing gas (generally comprising Ar and/or Kr and/or Xe) is for shortening the width of electric arc.So, this use for discharge lamp is when optical system, and practical radiant light strengthens, and this discharge lamp has higher brightness (high brightness lamp).As a result, due to the high thermic load that anode material brings, thermogenetic stress sometimes also become big, and then, thus functional surfaces region (functionalsurfaceregion) also deforms sometimes partly.
The short arc high-pressure discharge lamp of usual mentioned kind works under unidirectional current and firm power (watt).But, in some purposes, modulate its power periodically and be advantageous for.Even if so modulation power and make its work, sometimes also can increase the evaporation of anode material.
In order to solve the problems referred to above, especially for the evaporation reducing anode material, reduce the appearance of the local deformation in the functional surfaces region of anode, carried out different trials.The diameter of anode is increased especially for utilizing heat radiation to increase heat flux in the position away from anode.And then, it is proposed that antianode is coated and/or by the diverse ways of anode construction.Such as, as the painting cloth material in the functional surfaces region of anode, use coarse grain tungsten or dendroid rhenium.But, having in the short arc high-pressure discharge lamp that low temperature bonding pressure exceedes the such high encapsulation pressure of certain value, the evaporation of anode material can not be suppressed below permissible value by these countermeasures fully in advance.
And then, by comprising the potassium tungsten based material as additive, to form the discharge lamp of anode as described below.Insoluble k particle gives sufficient endurance for the dislocation (dislocation) carried out at very high temperatures, thus brings the shape stability of excellence.Find that not only shape stability is excellent, and when the tungsten material being doped with potassium uses under the high temperature more than 2500 DEG C, sometimes also show the crystal growth along crystal boundary transition.Such crystal growth brings high porosity, reduces thermal conductivity.
Patent documentation 1 describes and lights with high-voltage mercury discharging lamp (comprising anode) more than the DC under the nominal power of 1.5kW.At least some of region of this anode is formed by the material at least containing some tungsten.This material has more than every 1mm2In 200 number of die and more than 19.05g/cm3Density.Doped with potassium in this material.In this situation, the amount of potassium is less than 50ppm.
Prior art literature
Patent documentation
Patent documentation 1: International Publication 2008/077832A1 pamphlet
Summary of the invention
The problem that invention to solve
It is an object of the invention to provide the short arc high-pressure discharge lamp lighted more than the direct current under the nominal power of 1kW, described short arc high-pressure discharge lamp can improve the shape stability of anode and resistance to vapo(u)rability, meanwhile, even if anode material is also provided that the excellent processability of anode after being subject to high temperature process in the mill.
The short arc high-pressure discharge lamp that the purpose of the present invention is lighted by the direct current under the nominal power more than 1kW described in claim 1 solves.Dependent claims defines further expansion.
This short arc high-pressure discharge lamp comprises: discharge vessel, and low temperature bonding pressure is more than 0.5bar and is packaged with the fill comprising at least one rare gas and arbitrary hydrargyrum；Anode, is formed by the tungsten based material of the potassium comprising 5ppm～80ppm；And negative electrode.This anode and negative electrode are arranged in discharge vessel.Anode has a diameter d (wherein, 10mm < d < 70mm), and comprises functional surfaces region that anode and electric arc interacts and the body region with this functional surfaces area adjacency.The grained region that this functional surfaces region is included in the plane vertical with the longitudinal axis of anode and measures compares 2mm2Crystal grain wide, at least 1.The number of die of the tungsten based material in aforementioned body region is more than every 1mm2In 100.In this situation, this number of die measures in the 2nd plane vertical with the longitudinal axis of anode, and, the 2nd plane has the axial distance s to the surface in above-mentioned functional surfaces region, and (wherein, s is more than d).Between functional surfaces region and the body region in the direction parallel with the longitudinal axis of anode, the grain size existence of the tungsten based material of anode sharply changes.
The grained region of at least 1 crystal grain in this functional surfaces region can be passed through optical microscope and determine on the abradant surface in such as this functional surfaces region, and the number of die of the tungsten based material in aforementioned body region defines according to ASTME112.The diameter d of anode is decided to be the maximum gauge of anode.Anode comprises in the representational example of cylindrical portion and adjacent tapered segment, and the diameter of this cylindrical portion is decided to be the diameter d of anode.The encapsulation pressure of the discharge vessel that this term of low temperature bonding pressure is understood under room temperature.And then, for the potassium content of 5ppm～80ppm, the tungsten based material of anode can also comprise the other additive that can add in the form of the oxide sometimes, particularly silicon (Si) and aluminum (Al).The axis that the longitudinal axis of anode launches corresponding to electric arc.Region, above-mentioned functions face is such as preferably by only 1 grain formation of tungsten based material, or also grain formation by the limited amount of more than 2 sometimes.Preferably, when functional surfaces region comprises the crystal grain of more than 2, all crystal grains of the tungsten based material in this functional surfaces region has and compares 2mm2Wide grained region.Number of die in aforementioned body region is more than every 1mm2In 100, i.e. this body region is formed by micrograined texture, it addition, the grained region in this functional surfaces region compares 2mm2Width, it is corresponding in contrast great grain size, so on this point of grain size, there is extreme difference between this functional surfaces region and body region.This body region and functional surfaces area adjacency, therefore, between this functional surfaces region and body region, grain size existence sharply changes.Known particularly by the sharply change of such grain size (this is in secondary recrystallization, the sign of discontinuous grain growth), anode tungsten based material in bigger grain size in the potassium of the amount of determination, this functional surfaces region and during crystallite combinations of particle sizes, it is possible to realize the shape stability of special high level and the low-risk of preferred crystal growth.Thus, at the life expectancy of short arc high-pressure discharge lamp, the light beam of this short arc high-pressure discharge lamp increases.Particularly, it is possible to extremely effective reduce the minimizing of the practical light beam of the evaporation due to anode material.Body region and functional surfaces area adjacency, so between functional surfaces region and body region, being completely absent the region comprising intermediate die degree.DC operation short arc high-pressure discharge lamp should be applicable to and can be particularly suitable for the DC operation under such as firm power, or be suitable for the DC operation under the power modulated.This anode also has the shape (such as, in functional surfaces region or functional surfaces areas adjacent comprise round shape or cone shape) of such as general cylindrical shape sometimes.In this situation, longitudinal axis is consistent with this cylindrical center's line.
For solving the scheme of problem
According to an embodiment, the tungsten based material in aforementioned body region has the number of die being substantially independent of position.In other words, under such circumstances, number of die is almost necessarily in the volume of body region.In this situation, whole body region has crystallite granularity, and between body region and functional surfaces region, grain size gives change especially sharply.In this situation, this body region has especially excellent processability.
According to an embodiment, the tungsten based material of this anode has more than 19.05g/cm3Density.In this situation, this anode realizes by extremely fine and close manufacture method so that anode exists high thermal conductivity.So, in the work of this short arc high-pressure discharge lamp, it is possible to effectively suppress in anode by thermogenetic stress.
According to an embodiment, region, above-mentioned functions face has thickness t on the direction parallel with longitudinal axis.In this situation, d/20 < t < d/5, particularly d/10 < t < d/5.It can be seen that brought the particularly advantageous character of this short arc high-pressure discharge lamp by the above-mentioned thickness in this functional surfaces region.
According to an embodiment, region, above-mentioned functions face comprises to have compares 5mm2Width, particularly than 10mm2The crystal grain of at least 1 of wide grained region.When functional surfaces region comprises the crystal grain of more than 2, it is preferable that all crystal grains in this functional surfaces region has so wide grained region.Particularly, by so wide grained region, the evaporation of anode material is effectively suppressed, so, the life expectancy of this discharge lamp is elongated.
According to an embodiment, grain formation by only 1 of region, above-mentioned functions face.Under such circumstances, crystal boundary is excluded from this functional surfaces region, therefore, no matter which kind of crystal boundary, all do not interact with electric arc.Thereby, it is possible to realize anode particularly stablely.
According to an embodiment, the tungsten based material of the anode in aforementioned body region has more than every 1mm2In 200, particularly every 1mm2In the number of die of more than 350.Under such circumstances, the grain size in body region attenuates further, and therefore, the processability of anode improves further.And then, between body region and functional surfaces region, the sharply change of grain size becomes more significantly.So, shape stability and resistance to vapo(u)rability improve further.
According to an embodiment, the amount of the potassium in the tungsten based material of anode, less than 50ppm, is in particular 8ppm～45ppm, is especially 10ppm～40ppm.The numerical value of these potassium amounts extremely effective prevents the deformation of the anode caused by the carrying out of dislocation.Under such circumstances, the crystal being full of potassium makes dislocation be subject to the interaction of attractability, and therefore this anode material has high creep resistance.
According to an embodiment, the tungsten based material of anode also comprises Al and/or Si.Al and/or Si such as can provide by adding the oxide of correspondence in the powder metallurgically manufacturing technique of anode.Al and Si advantageously can make the potassium content in the tungsten based material of anode stable in the powder metallurgically manufacturing technique of anode, it is achieved the high stability of anode, and is effectively prevented the carrying out of dislocation.
According to an embodiment, this short arc high-pressure discharge lamp has the nominal power more than 4kW, it is preferable that have the nominal power more than 5kW.According to an embodiment, this fill comprises 1mg/cm3～50mg/cm3Hydrargyrum.Particularly in these situations, the evaporation of anode material often occurs more, it is necessary to be effectively prevented.
According to an embodiment, this low temperature bonding pressure is more than 0.5bar, is in particular more than 1.5bar, it addition, this short arc high-pressure discharge lamp is suitable for the work under firm power.Embodiment according to other, this low temperature bonding pressure is more than 0.5bar, is in particular more than 1.5bar, it addition, this short arc high-pressure discharge lamp is suitable for the work under the power modulated.Particularly, when making this short arc high-pressure discharge lamp be suitable for such working method, it is necessary to effectively suppress the evaporation of anode material.
With reference to figure below by the known further expansion of the description below of an embodiment and advantage.
Accompanying drawing explanation
Fig. 1 represents short arc high-pressure discharge lamp with schematic diagram.
Fig. 2 illustrates the microphotograph of the anode of the short arc high-pressure discharge lamp of an embodiment.
Fig. 3 is the short arc high-pressure discharge lamp for this embodiment and for 2 comparative examples, illustrates the chart of relative lumen (lumina) sustainment rate with the form of the function of working time.
Fig. 4 illustrates the difference of grain size between the body region determined by the microphotograph of Fig. 2 and functional surfaces region with schematic diagram.
Detailed description of the invention
Then, with reference to these accompanying drawings, one embodiment is described.Fig. 1 illustrates short arc high-pressure discharge lamp 1.Short arc high-pressure discharge lamp 1 comprises discharge vessel 2.Negative electrode 3 and anode 4 it is provided with in the inside of discharge vessel 2.As it is shown in figure 1, the side towards negative electrode 3 of anode 4 presents the shape of the general cylindrical shape with the edge with cone.Negative electrode 3 comprises the fore-end of cone.In the work of short arc high-pressure discharge lamp 1, between the cone-shaped nose part and anode 4 of negative electrode 3, it is formed with electric arc.This electric arc direction that be substantially parallel expansion at the longitudinal axis Z with anode 4.In embodiment illustrated, the longitudinal axis Z of anode 4 is consistent with cylindrical center's line of the cylindrical portion of anode 4.
As it is shown in figure 1, anode 4 also comprises the shape with cone preferably in towards negative electrode 3 side sometimes.In the side towards negative electrode 3, anode 4 comprises the functional surfaces region 4a that electric arc interacts with anode 4.Anode 4 in the direction away from negative electrode 3, the close vicinity at functional surfaces region 4a comprise body region 4b.Functional surfaces region 4a and body region 4b both of which are formed as the tungsten based material of additive by the potassium comprising 5ppm～80ppm.The amount of potassium is preferably less than 50ppm, and then is preferably 8ppm～45ppm, it is most preferred that for 10ppm～40ppm.Functional surfaces region 4a and body region 4b both of which are formed by same material, almost have equal densities.But, As explained in more detail below, the grain size in the 4a of functional surfaces region is different significantly from the grain size in body region 4b.Such as, the material of anode 4 can also be the potassium the imparting above-mentioned amount tungsten as additive.But, sometimes also impart other additive further.Such as, sometimes with the addition of a small amount of aluminum (Al) and/or silicon (Si) additive as other further.Such as, these additives add sometimes in the form of the oxide.The amount of preferred above-mentioned a small amount of aluminum and/or silicon and potassium is phase same level.
In above-mentioned cylindrical portion, anode 4 has the diameter within the scope of 10mm～70mm.And then, the tungsten based material of anode has more than 19.05g/cm3Density.So, in the work of short arc high-pressure discharge lamp 1, heat transfer and heat radiation are led to, it is possible to effectively transferred out from functional surfaces region 4a by heat.
In body region 4b, this tungsten based material comprises and has more than every 1mm2In 100 number of die, be preferably more than every 1mm2In the number of die of 200 it is preferred that more than every 1mm2In the crystallite granularity of number of die of 350.This number of die, according to ASTME112, measures being perpendicular in the plane of longitudinal axis of anode 4.Such as, this number of die is only spaced from the position finding of s on the surface from functional surfaces region 4a.Wherein, distance s is bigger than the above-mentioned diameter d determined.This number of die is almost necessarily in the whole body region 4b of anode 4.In other words, this number of die does not substantially rely on position in body region 4b.
Functional surfaces region 4a is extended to body region 4b by anode 4 towards the face of negative electrode 3.That is, between functional surfaces region 4a and body region 4b, entirely without other region (there is intermediate die degree/number of die) of sandwiched.Functional surfaces region 4a has the grain size extremely different from the grain size in body region 4b.Grain formation by only 1 of functional surfaces region 4a, or sometimes comprise the crystal grain of minority.Grain formation by only 1 of preferred function face region 4a.Functional surfaces region 4a comprises to have and compares 2mm2Wide grained region, preferably than 5mm2Wide grained region is it is preferred that compare 10mm2The crystal grain of at least 1 of wide grained region.This grained region is measured by the microphotograph of functional surfaces region 4a.When comprising multiple crystal grain in the 4a of functional surfaces region, these all of crystal grain preferably have wide grained region as determined above.In the radial direction, functional surfaces region 4a at least formed in anode 4 with the longitudinal axis Z surface portion intersected.On the direction parallel with longitudinal axis Z, functional surfaces region 4a has the thickness t of d/20～d/5, it is preferable that have the thickness t of d/10～d/5.Herein, d is the diameter of anode 4 as determined above.
Grained region width in the 4a of functional surfaces region, it addition, the number of die of body region 4b (being positioned at the close vicinity of functional surfaces region 4a) is many, so the interface between functional surfaces region 4a and body region 4b, grain size existence sharply changes significantly.Particularly favorable influence is brought for the characteristic of anode 4 in the region sharply changing, being namely absent from intermediate die degree of known such grain size.It is believed that the sharply change of this grain size between functional surfaces region 4a and body region 4b is what to be caused by the discontinuous grain growth in the 4a of functional surfaces region.
The characteristic of above-mentioned anode 4 can be implemented as described below: is formed anode 4 by the tungsten based material taking micronized form, for the anode material before the large deformation that so formed, in somewhat low temperature (such as, lower than 1300 DEG C) under apply large deformation (such as, specifically, degree of deformation Δ A/A > 66%), the energy of high degree of deformation is drawn by the anode before this large deformation.It, as a result, it is possible to obtain the bigger power produced in recrystallization, brings the growth of crystal boundary at a high speed, and potassium crystal is introduced in the inside of these crystal grain in addition.Thus, it is suppressed along the less desirable crystal growth of these crystal boundaries.
Embodiment
With 2, the short arc high-pressure discharge lamp 1 of an embodiment is compared sample compare.By shown in Figure 3 for this result of the comparison.In Fig. 3, for the short arc high-pressure discharge lamp 1 of this embodiment, and compare sample for 2, depict relative lumen depreciation (representing with percentage rate) with the form of the function of working time (with time representation).This relative lumen depreciation provides the change of the light beam compared with incipient beam of light.Measured value for this embodiment is drawn with circle, and the triangle for the measured value black of the 1st comparative example is drawn, it addition, the square drafting of the measured value black for the 2nd comparative example.
In this embodiment and these comparative examples, respective anode by with the addition of potassium (K), aluminum (Al), silicon (Si) tungsten formed.The density of this anode material is 19.1g/cm in all of 3 examples3。
In this embodiment, the amount of potassium is 25ppm, it addition, the amount of aluminum is 18ppm, and then, the amount of silicon is 6ppm.
In 1st comparative example, the amount of potassium is 26ppm, it addition, the amount of aluminum is 18ppm, and then, the amount of silicon is 7ppm.
In 2nd comparative example, the amount of potassium is 24ppm, it addition, the amount of aluminum is 17ppm, and then, the amount of silicon is 7ppm.
In present embodiment, body region 4b comprises the number of die/mm of about 3502, it addition, functional surfaces region 4a is by having about 12mm2Only 1 grain formation of grain size.The microphotograph of a part for the anode of the short arc high-pressure discharge lamp of this embodiment shown in Fig. 2.In Fig. 2, it is clear that: grain formation by only 1 of functional surfaces region 4a, body region 4b comprises microgranule.Therefore, the interface between functional surfaces region 4a and body region 4b, grain size existence sharply changes.It illustrates with schematic diagram in the diagram.The structure of the anode 4 of this embodiment is by by having desired form and tungsten system powder that mean grain size is 3.5 μm forms anode material thus obtaining." (rough) before large deformation " anode is subject to isostatic cool pressing under about 2000bar, sinters at the temperature higher than 2200 DEG C.Anode 4 (or, more precisely, for anode material in this stage) at the temperature lower than 1300 DEG C, it is deformed into the concrete degree of deformation Δ A/A higher than 66%.The anode 4 so formed carries out 180 minutes annealings at 2200 DEG C.Short arc high-pressure discharge lamp 1 is installed after anode 4, anode 4 is heated the maximum operating temperature to about 3000 DEG C.In this situation, heating carries out continuously with the interval of about 60 points.
In above-mentioned 2 comparative examples, body region 4b and functional surfaces region 4a has the almost identical number of die/mm of about 3502。
The anode of this embodiment and these comparative examples is all formed in powder metallurgically manufacturing technique.Its result, the shape of the anode obtained is realized by known skill and technique such as hammering (hammering), grinding (grinding), milling (milling), cleaning, tempering (tempering).With the anode 4 of this embodiment comparatively, the anode of these comparative examples is not subject to the large deformation at somewhat low temperature.
As seen from Figure 3, the relative lumen holdup of the short arc high-pressure discharge lamp of this embodiment shows the behavior significantly increased with the form of the function of working time.That is, this light beam is compared with these comparative examples, and over time, attenuation degree is suppressed.
Therefore, the stability of the anode of the short arc high-pressure discharge lamp of the present invention, compared with existing embodiment, shows substantial raising.According to the present invention, substantially, it is possible to achieve no matter which kind of crystal boundary does not all interact with electric arc.To a certain extent it is believed that this is to be brought by the discontinuous grain growth in secondary recrystallization.Discontinuous grain growth carries out at high speed.Thus, crystal grain is not substantially by the impact of crystal boundary, it is possible to avoids the coarsening of the further crystal grain caused along these crystal boundaries by zoarium.The crystal being full of potassium makes dislocation be subject to the interaction of attractability, and thus anode material has high creep resistance, it is possible to avoid the deformation caused by the carrying out of dislocation.It is further known that, in the work of the short arc high-pressure discharge lamp of the present invention, it is possible to prevent the further growth being made into thin granular crystal grain in body region 4b.
Describe slightly specific embodiment, but be not construed as the scope that these embodiments limit claims of the present invention.
Description of reference numerals
1 short arc high-pressure discharge lamp
2 discharge vessels
3 negative electrodes
4 anodes
4a functional surfaces region
4b body region
Z longitudinal axis
Claims (13)
1. a short arc high-pressure discharge lamp, it is characterised in that it is be applicable to the short arc high-pressure discharge lamp (1) more than the DC operation under the nominal power of 1kW, possesses:
Discharge vessel (2), room temperature encapsulation pressure is more than 0.5bar and is packaged with the fill comprising at least one rare gas and hydrargyrum；
Anode (4), is formed by the tungsten based material of the potassium comprising 5ppm～80ppm；With
Negative electrode (3),
Described anode (4) and described negative electrode (3) are arranged in described discharge vessel (2), additionally, described anode (4) has diameter d, wherein, 10mm < d < 70mm, and described anode (4) comprises: functional surfaces region (4a) that described anode (4) and electric arc interact and the body region (4b) adjacent with described functional surfaces region (4a)；
Wherein, described functional surfaces region (4a) comprises the crystal grain of at least 1, and the grained region that described crystal grain measures in the plane vertical with the longitudinal axis of described anode (4) (Z) compares 2mm2Wide；
The number of die of the described tungsten based material in described body region (4b) is more than every 1mm2In 100, in this situation, described number of die measures in the 2nd plane vertical with described longitudinal axis (Z) of described anode (4), further, described 2nd plane has the axial distance s to the surface in described functional surfaces region, wherein, s is more than d
Interface between the described functional surfaces region (4a) and described body region (4b) in the direction parallel with described longitudinal axis (Z), the grain size existence of the described tungsten based material of described anode (4) sharply changes, it does not have the region of intermediate die degree.
2. short arc high-pressure discharge lamp according to claim 1, it is characterised in that the described tungsten based material in described body region (4b) has the number of die not relying on position.
3. short arc high-pressure discharge lamp according to claim 1, it is characterised in that the described tungsten based material of described anode (4) has more than 19.05g/cm3Density.
4. the short arc high-pressure discharge lamp according to any one in claims 1 to 3, it is characterised in that described functional surfaces region (4a) has thickness t on the direction parallel with described longitudinal axis (Z), d/20 < t < d/5 in this situation.
5. the short arc high-pressure discharge lamp according to any one in claims 1 to 3, it is characterised in that described functional surfaces region (4a) comprises the crystal grain of at least 1, described crystal grain has and compares 5mm2Wide grained region.
6. the short arc high-pressure discharge lamp according to any one in claims 1 to 3, it is characterised in that grain formation by only 1 of described functional surfaces region (4a).
7. the short arc high-pressure discharge lamp according to any one in claims 1 to 3, it is characterised in that the described tungsten based material of the described anode (4) in described body region (4b) has more than every 1mm2In the number of die of 200.
8. the short arc high-pressure discharge lamp according to any one in claims 1 to 3, it is characterised in that the amount of the potassium in the described tungsten based material of described anode (4) is less than 50ppm.
9. the short arc high-pressure discharge lamp according to any one in claims 1 to 3, it is characterised in that the described tungsten based material of described anode (4) also comprises Al and/or Si.
10. the short arc high-pressure discharge lamp according to any one in claims 1 to 3, it is characterised in that there is the nominal power more than 4kW.
11. according to the short arc high-pressure discharge lamp described in any one in claims 1 to 3, it is characterised in that described fill comprises 1mg/cm3～50mg/cm3Hydrargyrum.
12. according to the short arc high-pressure discharge lamp described in any one in claims 1 to 3, it is characterised in that described room temperature encapsulation pressure is more than 0.5bar, and described short arc high-pressure discharge lamp is suitable for the work under firm power.
13. according to the short arc high-pressure discharge lamp described in any one in claims 1 to 3, it is characterised in that described room temperature encapsulation pressure is more than 0.5bar, and described short arc high-pressure discharge lamp is suitable for the work under the power modulated.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-173994 | 2011-08-09 | ||
| JP2011173994A JP5823770B2 (en) | 2011-08-09 | 2011-08-09 | Short arc high pressure discharge lamp |
| PCT/JP2012/069974 WO2013021967A1 (en) | 2011-08-09 | 2012-08-06 | Short arc high-pressure discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103733301A CN103733301A (en) | 2014-04-16 |
| CN103733301B true CN103733301B (en) | 2016-07-06 |
Family
ID=47668474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280038924.XA Active CN103733301B (en) | 2011-08-09 | 2012-08-06 | Short arc high-pressure discharge lamp |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5823770B2 (en) |
| KR (1) | KR101941322B1 (en) |
| CN (1) | CN103733301B (en) |
| TW (1) | TWI566269B (en) |
| WO (1) | WO2013021967A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT15459U1 (en) * | 2016-04-11 | 2017-09-15 | Plansee Se | anode |
| TWI811707B (en) * | 2021-06-21 | 2023-08-11 | 榮田精機股份有限公司 | Multi-jaw hydraulic automatic chuck |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151537C (en) * | 1997-09-04 | 2004-05-26 | 电灯专利信托有限公司 | Electrode and method and manufacturing apparatus thereof |
| TW200834646A (en) * | 2006-12-22 | 2008-08-16 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Mercury high pressure discharge lamp |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5550566A (en) * | 1978-10-06 | 1980-04-12 | Toshiba Corp | Super high voltage discharging lamp |
| US4574219A (en) * | 1984-05-25 | 1986-03-04 | General Electric Company | Lighting unit |
| JP3596453B2 (en) * | 2000-09-28 | 2004-12-02 | ウシオ電機株式会社 | Short arc discharge lamp |
| JP4167199B2 (en) * | 2003-11-28 | 2008-10-15 | 株式会社アライドマテリアル | Tungsten electrode |
-
2011
- 2011-08-09 JP JP2011173994A patent/JP5823770B2/en active Active
-
2012
- 2012-07-23 TW TW101126422A patent/TWI566269B/en active
- 2012-08-06 KR KR1020147006305A patent/KR101941322B1/en active IP Right Grant
- 2012-08-06 WO PCT/JP2012/069974 patent/WO2013021967A1/en active Application Filing
- 2012-08-06 CN CN201280038924.XA patent/CN103733301B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151537C (en) * | 1997-09-04 | 2004-05-26 | 电灯专利信托有限公司 | Electrode and method and manufacturing apparatus thereof |
| TW200834646A (en) * | 2006-12-22 | 2008-08-16 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Mercury high pressure discharge lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201324578A (en) | 2013-06-16 |
| CN103733301A (en) | 2014-04-16 |
| KR101941322B1 (en) | 2019-01-22 |
| TWI566269B (en) | 2017-01-11 |
| WO2013021967A1 (en) | 2013-02-14 |
| JP5823770B2 (en) | 2015-11-25 |
| JP2013037937A (en) | 2013-02-21 |
| KR20140078618A (en) | 2014-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100670688B1 (en) | Short-arc high-pressure discharge lamp | |
| CN102142353B (en) | Discharge lamp | |
| EP1193733B1 (en) | Short arc discharge lamp | |
| CN103733301B (en) | Short arc high-pressure discharge lamp | |
| JP4513031B2 (en) | Short arc type high pressure discharge lamp | |
| JP2007113104A (en) | Tungsten electrode material | |
| TWI419199B (en) | Mercury high pressure discharge lamp | |
| CN105788996B (en) | A kind of submicron film scandium tungsten cathode and preparation method thereof | |
| US8758652B2 (en) | Tungsten cathode material | |
| JP4132879B2 (en) | Short arc type discharge lamp electrode and short arc type discharge lamp | |
| CN112272860B (en) | Cathode member for discharge lamp and discharge lamp | |
| JP2004355971A (en) | Electrode for fluorescent lamp, its manufacturing method, and fluorescent lamp | |
| JP7043680B2 (en) | Cathode parts for discharge lamps and discharge lamps | |
| JP2008047548A (en) | Short-arc type high-pressure discharge lamp | |
| JP7176121B2 (en) | Cathode parts for discharge lamps and discharge lamps | |
| JP2009266571A (en) | Electrode manufacturing method, electrode material, and discharge lamp | |
| EP2209133A2 (en) | High pressure mercury lamp | |
| JP2005203184A (en) | Electrode material for cold cathode fluorescent lamp, discharge electrode and its manufacturing method | |
| JP2011065756A (en) | Short arc discharge lamp | |
| JP2014013669A (en) | Hot cathode fluorescent lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |