WO2007004319A1 - ガス放電管、光源装置及び液体クロマトグラフ - Google Patents
ガス放電管、光源装置及び液体クロマトグラフ Download PDFInfo
- Publication number
- WO2007004319A1 WO2007004319A1 PCT/JP2005/022790 JP2005022790W WO2007004319A1 WO 2007004319 A1 WO2007004319 A1 WO 2007004319A1 JP 2005022790 W JP2005022790 W JP 2005022790W WO 2007004319 A1 WO2007004319 A1 WO 2007004319A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- opening
- gas discharge
- discharge tube
- anode
- width
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/68—Lamps in which the main discharge is between parts of a current-carrying guide, e.g. halo lamp
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/74—Optical detectors
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N2030/022—Column chromatography characterised by the kind of separation mechanism
- G01N2030/027—Liquid chromatography
Definitions
- the present invention relates to a gas discharge tube, a light source device, and a liquid chromatograph that generate a discharge for obtaining emitted light in a sealed container filled with gas.
- a light source device employed as a light source such as a liquid chromatograph or a semiconductor inspection device has a gas discharge tube that emits light of a predetermined wavelength, and is disposed on the back side of the gas discharge tube to transmit visible light to the gas discharge tube.
- a visible light source that emits toward the tube.
- a gas discharge tube used in such a light source device includes a pair of a cathode portion and an anode portion that generate discharge, and the anode portion is provided with a circular opening that allows visible light from a visible light source to pass through. ing.
- the circular opening provided in the anode portion is a position where visible light that has passed through the circular opening can pass through a discharge constriction hole (discharge path limiting portion) that constricts the discharge path between the positive electrode portion and the cathode portion. Is arranged. (For example, see Patent Documents 1 and 2).
- Patent Document 1 Japanese Patent Laid-Open No. 59-215654
- Patent Document 2 JP-A-5-109389
- Patent Document 3 Japanese Patent Laid-Open No. 2001-35238
- the inventors have found the following problems as a result of studying the above prior art. That is, in the conventional gas discharge tube, when increasing the amount of light from the visible light source passing through the discharge constriction hole, it is necessary to set the diameter of the circular opening of the anode portion larger than the diameter of the discharge constriction hole. . However, in this case, the distance between the discharge constriction hole and the opening edge of the anode part becomes long, and the discharge startability is deteriorated. Power! In addition, since the area of the anode part is reduced (the ratio of the opening area to the surface of the anode part is increased), the temperature of the anode part is likely to rise.
- the present invention has been made to solve the above-described problems, and realizes both maintenance of discharge startability and prevention of lifetime reduction in the anode portion, and visible light passing through the discharge path limiting portion. It is an object of the present invention to provide a gas discharge tube, a light source device, and a liquid chromatograph equipped with a structure for enabling the light source power to increase the amount of visible light.
- a gas discharge tube includes a sealed container filled with a gas, and a cathode part, an anode part, and a discharge path limiting part are arranged in the sealed container.
- the cathode is an electrode that generates thermoelectrons that contribute to discharge.
- the anode part is an electrode that accepts thermoelectrons from the cathode part, and discharge occurs between the cathode part and the anode part.
- the discharge path limiting part functions to narrow the discharge path between the cathode part and the anode part.
- the anode portion has a first surface facing the discharge path limiting portion and a second surface facing the first surface, and the first surface and the second surface. There is an opening to communicate with each other.
- the cross section of the opening (defined on the reference surface corresponding to the first surface) has a noncircular shape.
- the light source device includes a gas discharge tube having the above-described structure (a gas discharge tube according to the present invention) and visible light toward an opening of an anode portion of the gas discharge tube. And a visible light source that emits light. Furthermore, a liquid chromatograph according to the present invention includes the light source device.
- the cross section of the opening formed in the anode portion is noncircular. Therefore, for example, the opening width (opening length L) along the tube axis direction of the sealed container is made longer than the diameter of the circular opening (hereinafter referred to as the conventional circular opening) of the anode portion in the conventional gas discharge tube,
- the opening width (opening width W) along the direction orthogonal to the tube axis direction of the container can be matched with the diameter of the conventional circular opening.
- non-circular shape means an ellipse. Shapes, ellipses, rectangles, squares, rhombuses, parallelograms, other polygons, and combinations of these are included.
- the “opening” may have the above-described cross-sectional shape as viewed from the direction extending along the optical axis X of the emitted light from the gas discharge tube.
- aperture length L and “aperture width W” mean the distance between the edges of the anode part that defines the aperture in a plane perpendicular to the optical axis X (linear distance). Specified opening width) and among the line segments indicating these, the line segments passing through the axis of the opening are orthogonal to each other.
- “Opening length L” is longer than “Opening width W”.
- the cross section of the opening in the anode part is a non-circular shape in which the maximum opening width in the first direction is different from the maximum opening width in the second direction orthogonal to the first direction.
- the maximum opening width in the first direction corresponds to the opening length L
- the opening width in the second direction corresponds to the opening width W.
- the opening length L can be made longer than the diameter of the conventional circular opening
- the opening width W can be matched with the diameter of the conventional circular opening.
- the “diameter” is the distance between the edges of the opening viewed from the direction extending along the optical axis of the light emitted from the conventional gas discharge tube (opening width defined by a linear distance) and a line indicating this distance. Of the minutes, the line that passes through the axis of the opening.
- the cross section of the opening has any one of an elliptical shape, an elliptical shape, and a rectangular shape.
- the cross section of the opening has a shape adjusted by a protrusion extending along the reference plane from the edge of the anode part defining the opening in addition to these shapes. There may be.
- the opening width in the second direction opening width W
- the cross section of the opening has a maximum opening width in the second direction at the opening from the edge of the anode part defining the opening. Adjusted by protrusions extending in two directions.
- the opening width in the predetermined direction can be made larger than the diameter of the conventional circular opening while suppressing an increase in the opening area of the opening. Therefore, compared with the case where the opening area of the conventional circular opening is simply enlarged, the discharge startability can be improved by increasing the current capacity. Further, in the same comparison, the heat capacity of the anode part also increases, so that the life characteristics of the anode part can be improved.
- “oval shape” means the edge of the anode part that defines the opening. This is a shape specified by providing straight portions parallel to each other extending along a predetermined direction. That is, when these straight portions (parallel portions) extend along the first direction, the opening width between these straight portions becomes the opening width W.
- the edge portion connecting the end portions of these straight line portions may be either a straight line or a curved line (for example, an arc shape).
- the gas discharge tube according to the present invention may be a side-on type gas discharge tube that emits light in a direction orthogonal to the tube axis direction of the sealed container.
- the first surface of the anode part is arranged so as to be parallel to the tube axis direction Y of the sealed container. That is, when the anode portion is arranged so that the opening length L (the longer opening width) in the opening extends along the tube axis direction Y, the opening portion extends in the tube axis direction Y with respect to the discharge path limiting portion. Even if there is a slight deviation, there is little effect on the discharge startability and the life reduction of the anode part.
- the opening length L extends along the tube axis direction means that the opening length and the tube axis are substantially in the same direction.
- the gas discharge tube, the light source device, and the liquid chromatograph according to the present invention both the maintenance of the discharge startability and the prevention of the lifetime reduction of the anode part are realized, and the visible light passing through the discharge path restriction part The amount of visible light from the light source can be increased.
- FIG. 1 is a perspective view showing the structure of an embodiment of a gas discharge tube according to the present invention.
- FIG. 2 is a front view of the gas discharge tube shown in FIG.
- FIG. 3 is a rear view of the gas discharge tube shown in FIG.
- FIG. 4 is a cross-sectional view of the gas discharge tube according to the first embodiment along the line IV-IV in FIG.
- FIG. 5 is an exploded perspective view showing the back side force of the gas discharge tube in the light emitting assembly shown in FIG. 4 with the support portion, the discharge path limiting portion, and the anode portion.
- FIG. 6 is a front view of a support portion, a discharge path limiting portion, and an anode portion in the light emitting portion assembly shown in FIG.
- FIG. 7 is an exploded front view of a support portion, a discharge path limiting portion, and an anode portion in the light emitting portion assembly shown in FIG.
- FIG. 8 is a front view of the discharge path limiting portion and the conductive plate in the light emitting unit assembly shown in FIG.
- [9] is a longitudinal sectional view showing the positional relationship between the discharge path constricting hole and the opening (oval shape) shown in FIG.
- FIG. 10 is a rear view showing the positional relationship between the discharge path constricting hole and the opening (oval shape) shown in FIG.
- FIG. 11 is a cross-sectional view showing the structure of one embodiment of a light source device according to the present invention.
- FIG. 12 is a schematic configuration diagram showing a structure of one embodiment of a liquid chromatograph according to the present invention.
- FIG. 13 is a front view showing another structure of the anode part applicable to the gas discharge tube according to the present invention.
- FIG. 14 is a cross-sectional view showing another positional relationship between the discharge path narrowing hole and the anode portion in the gas discharge tube according to the present invention.
- FIG. 15 is a front view of the anode part shown in FIG.
- FIG. 16 is a front view showing still another structure of the anode portion applicable to the gas discharge tube according to the present invention.
- FIG. 17 is a front view showing still another structure of the anode portion applicable to the gas discharge tube according to the present invention.
- FIG. 4 show an embodiment of the gas discharge tube according to the present invention
- FIGS. 5 to 8 show the light emitting part assembly shown in FIG. 4, and FIGS.
- the positional relationship between the discharge path constriction hole and the ellipse opening shown in FIG. 4 is shown.
- the traveling direction of the emitted light is defined as “front”, and words such as “front”, “back”, “front”, “back”, etc. are used, and “up”, Words indicating the direction such as “down” shall be said in the state of each figure.
- the gas discharge tube 10 shown in FIGS. 1 to 4 is a side-on type deuterium lamp that emits ultraviolet light (200 to 400 nm) in a direction perpendicular to the tube axis direction ⁇ , It is also a see-through gas discharge tube that allows another light to pass through from behind.
- a gas discharge tube 10 can apply light emitted from another light source disposed behind the gas discharge tube 10 to an object placed in front of the gas discharge tube 10, for example. Used as a light source for analytical instruments and semiconductor inspection equipment.
- the gas discharge tube 10 includes a sealed container 11 made of glass filled with deuterium gas of about several hundreds Pa. In the sealed container 11, as shown in FIG. A light emitting part assembly 14 for emitting ultraviolet light having a part 13 is accommodated.
- the sealed container 11 has a cylindrical side tube portion 15 whose one end (upper end in the drawing) is sealed, and the other end side of the side tube portion 15. It is composed of a stem portion 16 to be sealed. A part of the side tube portion 15 is used as a light exit window 17 (see FIG. 4).
- the stem portion 16 includes a plurality (seven in this embodiment) of conductive stem pins 18a to 18g. Each is fixed in a penetrating state.
- the stem pins 18a to 18g extend along the tube axis direction Y (the axial direction of the side tube; the vertical direction in the drawing).
- steps 28a to 28c are provided at the tip portions of the stem pins 18d to 18f. These steps 28a to 28c are stem pins 18c! Are used for alignment in the tube axis direction Y of the anode part 12 connected to the tip part of 18f and the arm parts 27a and 27a extending rearward of the conductive plate 27 described later.
- the light emitting unit assembly 14 generates arc discharge and emits ultraviolet light.
- the light emitting unit assembly 14 includes an anode unit 13 in addition to a cathode unit 13 that generates thermoelectrons that contribute to discharge and an anode unit 12 that receives thermoelectrons from the cathode unit 13.
- the front cover 24 is formed.
- the cathode portion 13 is electrically connected to an external power source by the stem pins 18a and 18c shown in FIG.
- the base member 22 and the support member 23 also have an insulating material force such as ceramics.
- the support member 23 is a plate-like member in which a concave portion serving as a part accommodating space 21 is formed on the back side thereof.
- An opening 23a is formed in the center of the recess, and a discharge path limiting portion 26 for limiting the discharge path between the cathode portion 13 and the anode portion 12 is disposed in the opening 23a.
- openings 23b and 23b extending in the tube axis direction Y are formed in the support member 23, and stem pins 18b and 18c are inserted into the openings 23b and 23b, respectively.
- the discharge path limiting portion 26 is made of, for example, a metal such as molybdenum, tungsten, or an alloy made of these, and has conductivity. Further, the discharge path restricting portion 26 has a cylindrical shape, and its through hole has a discharge path constriction hole (diameter of about 0.5 mm) 26a for constricting the discharge path, as shown in FIGS. And a conical portion 26b for forming an arc ball. As shown in FIGS. 4 and 8, a conductive plate 27 is electrically connected to the rear surface of the discharge path limiting portion 26. As shown in FIGS. 4 and 5, the conductive plate 27 is housed in the housing space 21 while being electrically connected to the stem pins 18e and 18f.
- the base member 22 is fixed to the back surface of the support member 23, and is a plate-like member as shown in FIG. On the front side thereof, a recess that constitutes the accommodation space 21 is formed. Center of recess As shown in FIGS. 3 and 4, an opening 22a that communicates with the back side is formed.
- the opening 22a allows light emitted from another light source disposed behind the gas discharge tube 10 to pass therethrough.
- the light passage openings 24a formed in the conical portion 26b and the front cover 24 are arranged coaxially.
- the anode portion 12 is a plate having a first surface 120a facing the discharge path limiting portion 26 and a second surface 120b facing the first surface. Electrode.
- the anode portion 12 is provided with an opening that connects the first surface 120a and the second surface 120b.
- the opening is supported along the tube axis direction Y while being supported by the stem pin 18d.
- the plate-like anode part 12 is arranged so as to be substantially orthogonal to the optical axis X of the emitted light from the gas discharge tube 10, and at the center of the anode part 12, its long width D2 is the tube axis direction.
- An oval opening 12a is formed so as to extend in Y direction.
- the cross-sectional shape of the oval opening 12a in the plane perpendicular to the optical axis X is uniform along the optical axis X direction.
- the shorter opening width (opening width W1) of the oval opening 12a is defined as the short width D1
- the longer opening width (opening length L1) perpendicular to the short width D1 is set.
- the length of the short width D1 is substantially the same as the diameter of the conventional circular opening
- the length of the long width D2 is longer than the diameter of the conventional circular opening. Note that the short width D1 and the long width D2 exist on a plane perpendicular to the optical axis X and are orthogonal to each other.
- the oval opening 12a is obtained by forming linear portions 12c and 12c parallel to each other along the direction of the opening length L1 at the edge of the anode part 12 (which defines the oval opening 12a). .
- the edge portions 12d and 12d connecting the end portions of the straight portions 12c and 12c are processed into an arc shape having apex portions 12e and 12e protruding outward.
- the conductive plate 27 is fixed to the back surface of the discharge path limiting portion 26. Subsequently, as shown in FIGS. 5 and 7, the support member 23 and the conductive plate 27 are fixed in a state where the discharge path limiting portion 26 is disposed in the opening 23 a of the support member 23.
- the anode 12 has a step at the lower end of the anode 12 at the tip of the stem pin 18d so that the oval opening 12a extends along the tube axis direction Y. Fixed in contact with 28a.
- stem pins 18b, 18c are inserted into the openings 23b, 23b of the support member 23, and the lower ends of the arm portions 27a, 27a are formed on the side surfaces of the arm portions 27a, 27a of the conductive plate 27 by steps 28b, 28c.
- the stem pins 18e and 18f are in contact with each other in a state where they are in contact with each other.
- the discharge path limiting portion 26 and the conductive plate 27 are arranged at predetermined positions with respect to the support member 23 so that the axial centers of the discharge path constricting hole 26a and the oval opening 12a are located substantially coaxially.
- the distance D3 between the discharge path limiting portion 26 and the anode portion 12 shown in FIG. 9 is about lmm.
- the discharge path constricting hole 26a is located at the position overlapping the oval opening 12a in the rear view (front view). There is no problem. That is, a deviation in the tube axis direction Y is allowed by the shape of the oval opening 12a.
- 12a indicated by an imaginary line indicates a range R in which there is no problem even if the oval opening 12a is displaced in the tube axis direction Y.
- the operation of the gas discharge tube 10 having the above structure will be described.
- the power before and after 1 OW is supplied to the cathode unit 13 via the stem pins 18a and 18c from the cathode external power supply for about 20 seconds before discharging.
- the coil which comprises the cathode part 13 is heated previously.
- a voltage of about 160 V is applied between the cathode portion 13 and the anode portion 12 via the stem pin 18d to the main discharge external power supply power, and preparation for arc discharge is completed.
- a predetermined voltage for example, a voltage of about 350 V
- a starting discharge is generated between the cathode portion 13 and the anode portion 12, and then a main discharge (arc discharge) is generated by an external power source for main discharge.
- a main discharge arc discharge
- ultraviolet light is emitted through the light exit window 17.
- one of the two widths Dl and D2 orthogonal to the anode portion 12 is shorter than the other width D2. It is summer. Therefore, it is possible to make the width D2 larger than the diameter of the conventional circular opening while making the width D1 coincide with the diameter of the conventional circular opening.
- the width D1 is about the same as the diameter of the conventional circular opening By doing so, it is possible to both maintain the discharge startability and prevent the life of the anode 12 from being reduced.
- the opening width in the predetermined direction can be made larger than the diameter of the conventional circular opening while suppressing an increase in the opening area.
- the discharge startability is improved by increasing the current capacity as compared with the case where the opening area of the conventional circular opening is simply enlarged.
- the heat capacity of the anode part 12 is also increased, so that the life characteristics of the anode part 12 are also improved.
- the opening width in the predetermined direction is widened, the amount of visible light passing therethrough can be increased.
- the gas discharge tube 10 is a side-on type gas discharge tube that emits light in a direction orthogonal to the tube axis direction Y of the sealed container 11. Accordingly, the anode portion 12 is formed with the oval opening 12a so that the long width D2 thereof extends along the tube axis direction Y. Therefore, there is no problem even if the oval opening 12 is arranged in a state slightly deviated in the tube axis direction Y with respect to the discharge path constriction hole 26a of the discharge path limiting portion 26. Conversely, the positioning of the oval opening 12a and the discharge path limiting portion 16 is facilitated, and the assembly efficiency of the light emitting portion assembly 14 can be improved.
- the light source device 40 provided with the gas discharge tube 10 having the above-described structure will be described.
- the light source device 40 is an extremely light and compact portable light source device that is convenient to carry.
- the light source device 40 includes a rectangular parallelepiped steel casing 41.
- a gas discharge tube 10 is disposed on the back side (right side in the drawing) of the gas discharge tube 10 to emit visible light.
- a tungsten lamp 85 and a power supply 44 for supplying power to the gas discharge tube 10 and the tungsten lamp 85 are accommodated.
- the gas discharge tube 10 is housed in an aluminum lamp box 50.
- the lamp box 50 is disposed on the front side (the left side in the figure) of the casing 41 and is screwed to the bottom plate 41a of the casing 41.
- the gas discharge tube 10 is arranged such that the stem portion 16 is positioned above.
- the front wall 50a on the front side of the lamp box 50 is formed with an opening 50b through which emitted light passes at a position corresponding to the light passage opening 24a (see FIG. 2) of the gas discharge tube 10.
- a condensing lens 80 is disposed in the opening 50b. In front of the front wall 50a, it corresponds to the opening 50b
- a cylindrical light guide tube 70 that allows the emitted light to pass therethrough is provided at the position where the light guide tube 70 is provided, and this light guide tube 70 extends forward by force.
- the ultraviolet light emitted from the gas discharge tube 10 passes through the condensing lens 80 and is emitted out of the housing 41.
- An opening 50d is formed in the rear wall 50c on the back side of the lamp box 50 at a position corresponding to the opening 22a of the gas discharge tube 10 (see FIG. 3).
- a lamp accommodating cylinder 82 that extends rearward and accommodates the tungsten lamp 85 is inserted into the opening 50d.
- a tungsten lamp 85 is disposed at the rear end of the lamp housing cylinder 82, and a condenser lens 84 is disposed at the front end of the lamp housing cylinder 82. Visible light emitted from the tungsten lamp 85 sequentially passes through the condenser lens 84, the gas discharge tube 10, and the condenser lens 80, and propagates along the same path as the ultraviolet light emitted from the gas discharge tube 10 to the housing. 41 is emitted outside.
- the light source device 40 having such a structure includes the gas discharge tube 10 and the tungsten lamp 85, ultraviolet light from the gas discharge tube 10, visible light from the tungsten lamp 85, and a combination of these lights. The emitted light can be generated. Further, since the see-through type gas discharge tube 10 is applied, the optical system can be omitted, and the light source device 40 that is miniaturized can be realized.
- the light source device 40 includes the tungsten lamp 85 as a visible light source, but may include other visible light sources such as a halogen lamp.
- the liquid chromatograph 100 is, for example, an ultraviolet-visible absorption detector used for analysis of organic compounds.
- the liquid chromatograph 100 is a hologram that optimizes the wavelength of light emitted from the light source device 40.
- a grating 104 that splits the light diffracted by 03 and a photodiode 105 that detects the light split by the grating 104 are provided.
- the slit 103 can be controlled by a program to optimize spectral resolution and sensitivity.
- the photodiodes 105 are arranged in an array and can simultaneously detect a plurality of wavelengths.
- Such a liquid chromatograph 100 can measure in a wider wavelength range (190 ⁇ ! To 950 nm) as compared with the conventional liquid chromatograph, thereby enabling highly reliable analysis. .
- the liquid chromatograph 100 also includes the gas discharge tube 10 having the above-described structure, both the maintenance of the discharge startability and the prevention of a decrease in the life of the anode portion can be realized, and the gas It is possible to increase the amount of visible light that passes through the discharge tube 10 even though it has a visible light source power.
- FIG. 1 This embodiment is different from the gas discharge tube shown in FIGS. 1 to 4 in that the shape of the opening formed in the anode portion is changed.
- an anode part 32 in which an elliptical opening 32a is formed is applied instead of the above-described anode part 12 in which the oval opening 12a is formed.
- the anode part 32 is also a plate-like electrode having first and second surfaces facing each other, like the anode part 12 described above.
- the short width (opening width W2) of the elliptical opening 32a is referred to as short width D5, and the longer width (opening length L2) perpendicular to the short width D5 is referred to as long width D6.
- the length of the short width D5 is substantially the same as the diameter of the conventional circular opening, and the length of the long width D6 is longer than the diameter of the conventional circular opening.
- the short width D5 and the long width D6 are orthogonal to each other on the opening cross section perpendicular to the optical axis X. Even with such a configuration, the same operation and effect as the gas discharge tube 10 shown in FIGS.
- FIG. 15 is a front view of the anode portion 35 in which the positional force of the XV-XV line in FIG. 14 is also viewed in the direction of the arrow.
- the gas discharge tube according to this embodiment is different from the gas discharge tube shown in FIGS. 1 to 4 in that an opening 12a whose opening shape does not change along the optical axis X direction (plate thickness direction) is formed.
- an anode portion 35 in which opening portions 36a and 37a having different opening shapes along the optical axis X direction are applied.
- the anode part 35 is composed of two bonded plates.
- This anode part 35 is also similar to the anode part 12 described above.
- the first surface 350a faces the discharge path limiting portion 26, and the second surface 350b faces the first surface 350a.
- the plate on the back side constitutes the anode body 36
- the plate on the front side constitutes the anode front plate 37.
- the anode main body 36 extends in the tube axis direction Y while being supported by the stem pin 18d.
- the anode portion 35 is disposed so as to be orthogonal to the optical axis X of the gas discharge tube, and a rectangular opening 36a having a long width D12 extending in the tube axis direction Y is formed at the center of the anode portion main body 36. ing.
- the shorter width (opening width W5) of the rectangular opening 36a is defined as short width D11
- the longer width (opening length L5) orthogonal to the short width D11 is defined as long width D12.
- the length of the short width D11 substantially matches the diameter of the conventional circular opening
- the length of the long width D12 is longer than the diameter of the conventional circular opening.
- the short width D11 and the long width D12 are orthogonal to each other on the opening cross section perpendicular to the optical axis X.
- a circular opening 37a is formed in the center of the anode front plate 37.
- the circular opening 37a is arranged so as to be coaxial with the rectangular opening 36a.
- the diameter D13 of the circular opening 37a is set longer than the long width D12 of the rectangular opening 36a.
- the present invention is not limited to the above-described embodiments.
- the gas discharge tube 10 including the anode portions 12, 32, and 35 in which the elliptical opening 12a, the elliptical opening 32a, and the rectangular opening 36a are formed is shown.
- the opening formed in the anode part is not limited to the elliptical opening 12a, the elliptical opening 32a, and the rectangular opening 36a.
- the anode 33 may have an opening 33a having a short width (opening width W3) D7 and a long width (opening length L3) D8 as openings.
- This anode part 33 is a rectangular convex part 33b, 33b in which both side forces in the direction perpendicular to the tube axis direction Y project toward the axial center with respect to the circular opening edge (the diameter is the same as the major axis D8).
- an opening 33a having a short width D7 is formed (the short width D7 is smaller than the long width D8).
- the anode 34 may have an opening 34a having a short width (opening width W4) D9 and a long width (opening length L4) D10.
- This anode part 34 is formed with mountain-shaped convex parts 34b, 34b that project both side forces in the tube axis direction Y toward the axial center with respect to the circular opening edge (diameter is the same length as the long width D10).
- an opening 34a having a short width D9 is formed (the short width D9 is smaller than the long width D10).
- the opening area of the conventional circular opening is simplified. Compared with the case where the light is expanded to, the amount of visible light from the visible light source passing through the discharge constriction hole can be increased without degrading the discharge startability.
- the oval opening (see FIG. 10) 12a, the elliptical opening (see FIG. 13) 32a and the rectangular opening (see FIG. 15) 36a are formed as described above. .
- the edge of the anode part constituting the short width (one width) of the openings 12a, 32a, 36a extends in the long width (the other width) direction, so that the discharge is dispersed and the discharge startability is improved. Can be maintained.
- the anode parts 12, 32 and 35 are superior to the anode parts 33 and 34 shown in FIGS.
- the above description may be a force head-on type gas discharge tube which relates to the side-on type gas discharge tube 10.
- an optical system that guides visible light of the visible light source power to the opening of the cathode when the stem is interposed between the opening of the anode and the visible light source. Is required.
- the gas discharge tube according to the present invention can be suitably applied to a light source such as a liquid chromatograph or a semiconductor inspection apparatus.
Landscapes
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamp (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/574,514 US7557509B2 (en) | 2005-06-30 | 2005-12-12 | Gas discharge tube light source apparatus and liquid chromatograph |
EP05814232A EP1830390B1 (en) | 2005-06-30 | 2005-12-12 | Gas discharge tube, light source and liquid chromatograph |
KR1020067003138A KR101143181B1 (ko) | 2005-06-30 | 2005-12-12 | 가스 방전관, 광원 장치 및 액체 크로마토그래프 |
CN2005800009715A CN101031992B (zh) | 2005-06-30 | 2005-12-12 | 气体放电管、光源装置以及液体色谱仪 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-192610 | 2005-06-30 | ||
JP2005192610A JP4932185B2 (ja) | 2005-06-30 | 2005-06-30 | ガス放電管、光源装置及び液体クロマトグラフ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007004319A1 true WO2007004319A1 (ja) | 2007-01-11 |
Family
ID=37604196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/022790 WO2007004319A1 (ja) | 2005-06-30 | 2005-12-12 | ガス放電管、光源装置及び液体クロマトグラフ |
Country Status (7)
Country | Link |
---|---|
US (1) | US7557509B2 (ja) |
EP (1) | EP1830390B1 (ja) |
JP (1) | JP4932185B2 (ja) |
KR (1) | KR101143181B1 (ja) |
CN (1) | CN101031992B (ja) |
AU (1) | AU2006201679B9 (ja) |
WO (1) | WO2007004319A1 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006040613B3 (de) * | 2006-08-30 | 2007-11-29 | Heraeus Noblelight Gmbh | Durchschein-Wasserstofflampe |
DE102008062410A1 (de) * | 2008-12-17 | 2010-07-01 | Heraeus Noblelight Gmbh | Kathodenabschirmung bei Deuteriumlampen |
KR101066078B1 (ko) * | 2009-04-30 | 2011-09-20 | (주)리트젠 | 중수소 램프 하우징 |
JP5479295B2 (ja) * | 2010-10-04 | 2014-04-23 | 浜松ホトニクス株式会社 | 光源 |
US9360187B2 (en) | 2010-10-04 | 2016-06-07 | Hamamatsu Photonics K. K. | Light source |
JP5479294B2 (ja) * | 2010-10-04 | 2014-04-23 | 浜松ホトニクス株式会社 | 光源 |
JP5479293B2 (ja) * | 2010-10-04 | 2014-04-23 | 浜松ホトニクス株式会社 | 重水素ランプ |
JP5479292B2 (ja) * | 2010-10-04 | 2014-04-23 | 浜松ホトニクス株式会社 | 光源 |
KR101066079B1 (ko) * | 2011-02-14 | 2011-09-20 | (주)리트젠 | 중수소 램프 하우징 |
DE102013107694A1 (de) * | 2013-07-18 | 2015-01-22 | Heraeus Noblelight Gmbh | Gasentladungslampe und deren Verwendung |
CN116581627B (zh) * | 2023-07-12 | 2023-09-15 | 吉林省永利激光科技有限公司 | 一种气体激光器 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59215654A (ja) * | 1983-05-24 | 1984-12-05 | Hamamatsu Photonics Kk | 改良された複合光源ランプ |
JP2001035238A (ja) * | 1999-07-16 | 2001-02-09 | Hamamatsu Photonics Kk | 重水素ランプボックス及びポータブル型光源装置 |
JP2001256924A (ja) * | 2000-03-10 | 2001-09-21 | Hamamatsu Photonics Kk | 光源装置 |
JP2001256922A (ja) * | 2000-03-10 | 2001-09-21 | Hamamatsu Photonics Kk | ガス放電管及び光源装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1970223A (en) * | 1929-06-28 | 1934-08-14 | Case Res Lab Inc | Sound recording glow lamp |
GB458169A (en) * | 1935-03-05 | 1935-11-16 | Philips Nv | Improvements in or relating to electron discharge tubes |
JPH0622110B2 (ja) * | 1984-02-14 | 1994-03-23 | 株式会社日立製作所 | 放電灯 |
JPH05109389A (ja) * | 1991-10-17 | 1993-04-30 | Hitachi Ltd | 重水素放電管および光学装置 |
JP2000173547A (ja) * | 1998-12-09 | 2000-06-23 | Hamamatsu Photonics Kk | ガス放電管 |
CN1317733C (zh) * | 2001-09-28 | 2007-05-23 | 浜松光子学株式会社 | 气体放电管 |
DE10256663B3 (de) * | 2002-12-04 | 2005-10-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Gasentladungslampe für EUV-Strahlung |
-
2005
- 2005-06-30 JP JP2005192610A patent/JP4932185B2/ja active Active
- 2005-12-12 US US10/574,514 patent/US7557509B2/en active Active
- 2005-12-12 EP EP05814232A patent/EP1830390B1/en active Active
- 2005-12-12 WO PCT/JP2005/022790 patent/WO2007004319A1/ja not_active Application Discontinuation
- 2005-12-12 KR KR1020067003138A patent/KR101143181B1/ko not_active IP Right Cessation
- 2005-12-12 CN CN2005800009715A patent/CN101031992B/zh active Active
-
2006
- 2006-04-21 AU AU2006201679A patent/AU2006201679B9/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59215654A (ja) * | 1983-05-24 | 1984-12-05 | Hamamatsu Photonics Kk | 改良された複合光源ランプ |
JP2001035238A (ja) * | 1999-07-16 | 2001-02-09 | Hamamatsu Photonics Kk | 重水素ランプボックス及びポータブル型光源装置 |
JP2001256924A (ja) * | 2000-03-10 | 2001-09-21 | Hamamatsu Photonics Kk | 光源装置 |
JP2001256922A (ja) * | 2000-03-10 | 2001-09-21 | Hamamatsu Photonics Kk | ガス放電管及び光源装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1830390A4 * |
Also Published As
Publication number | Publication date |
---|---|
AU2006201679B9 (en) | 2011-09-15 |
KR101143181B1 (ko) | 2012-05-08 |
AU2006201679B2 (en) | 2011-05-26 |
JP4932185B2 (ja) | 2012-05-16 |
CN101031992B (zh) | 2010-04-21 |
AU2006201679A1 (en) | 2007-01-18 |
EP1830390B1 (en) | 2012-02-08 |
US7557509B2 (en) | 2009-07-07 |
KR20070120871A (ko) | 2007-12-26 |
JP2007012471A (ja) | 2007-01-18 |
EP1830390A4 (en) | 2010-12-08 |
CN101031992A (zh) | 2007-09-05 |
US20080246400A1 (en) | 2008-10-09 |
EP1830390A1 (en) | 2007-09-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2007004319A1 (ja) | ガス放電管、光源装置及び液体クロマトグラフ | |
JP3361644B2 (ja) | ガス放電管 | |
US5619101A (en) | Gas discharge tube | |
JP2009031167A (ja) | X線管及びx線分析装置 | |
US20020017865A1 (en) | Gas discharge tube | |
AU2005272548B2 (en) | Gas Discharge Tube | |
US20170135190A1 (en) | Capacitively coupled devices and oscillators | |
WO2006087976A1 (ja) | 光源装置 | |
EP1154462B1 (en) | Gas discharge tube | |
US7781975B2 (en) | Gas discharge tube having cathode cover made of ceramics | |
US8008862B2 (en) | Shine-through hydrogen lamp | |
JP3495349B2 (ja) | 重金属含有ガラス判別器 | |
WO2000034981A1 (fr) | Tube a decharge gazeuse et dispositif optique | |
WO2002021570A1 (fr) | Lampe a cathode creuse, analyseur a absorption atomique et analyseur a fluorescence atomique | |
JP2002075283A (ja) | ホロカソードランプ、原子吸光分析装置及び原子蛍光分析装置 | |
KR20100119413A (ko) | 중수소 램프 | |
WO2000051164A1 (fr) | Lampe a cathode creuse | |
JP2012079583A (ja) | 光源 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200580000971.5 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020067003138 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005814232 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10574514 Country of ref document: US |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 2005814232 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: DE |