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61. 发明专利

JPH05325897A METAL HALIDE LAMP 失效
公开(公告)号：JPH05325897A
公开(公告)日：1993-12-10
申请号：JP13328292
申请日：1992-05-26
申请人： HITACHI LTD
发明人： SHINADA SHINICHI , MATSUNO HIROMITSU , ARAI YOJI , KIMURA TAKESHI
IPC分类号： H01J61/34 , H01J61/35
摘要： PURPOSE:To improve the safety by preventing high temperature pieces of broken glass and a sealed substance such as mercury from scattering to the circumference by a light scattering substance, even through a luminous tube is broken, and furthermore, an outer tube is broken, when the lamp is lighted. CONSTITUTION:In a metal halide lamp which has a luminous tube 1 having at least a pair of electrodes, and sealing a rare gas for starting, a metal halide, and mercury; and a translucent outer tube 7 containing the luminous tube 1; a light scattering substance 13 with a heat-resisting property is provided to cover at least along the full length of the luminous tube 1, to the surface of the outer tube 7.

62. 发明专利

JPH05290803A 失效
公开(公告)号：JPH05290803A
公开(公告)日：1993-11-05
申请号：JP8189692
申请日：1992-04-03
申请人： HITACHI LTD
发明人： FUKUDA TAKESHI , SHIMIZU TAKAO , ARAI YOJI , YASUDA MAKOTO
IPC分类号： H01J61/067 , H01J61/68
摘要： PURPOSE:To provide a highly efficient deuterium electric discharge tube of a long lifetime, having a stable light output characteristic. CONSTITUTION:Conductive fiber 9 which is stable at least at high temperatures is dispersed in a mixture ratio of 10wt.% or more and 50wt.% or less into an electron emitting substance 10. A cathode 11 formed of a columnar or cylindrical cathode structure coated with the electron emitting substance 10, and a sintered cathode 15 using a metal cup 8 are used. The conductive fiber is at least one selected from tungsten whisker, tungsten carbide whisker and carbon fiber. In the cathode, the electron emitting substance is a mixture of at least one kind selected from barium oxide, strontium oxide and calcium oxide with at least one kind selected from zirconium oxide and scandium oxide.

63. 发明专利

JPH05109389A HEAVY HYDROGEN DISCHARGE TUBE AND OPTICAL APPARATUS 失效
公开(公告)号：JPH05109389A
公开(公告)日：1993-04-30
申请号：JP26929691
申请日：1991-10-17
申请人： HITACHI LTD
发明人： ARAI YOJI , YASUDA MAKOTO , MATSUNO HIROMITSU , FUKUDA TAKESHI
IPC分类号： G01J3/10 , G01N21/01 , H01J61/30 , H01J61/68
摘要： PURPOSE:To generate double beams to provide an optical system in which the decrease of radiation brightness is prevented by forming a radiated light transmitting hole in an anode and a metal diaphragm on an optical axis passing the center of a small hole forming discharge passage and forming an ultraviolet ray transmitting window in the bulb. CONSTITUTION:In a heavy hydrogen discharge tube, while surrounding a metal diaphragm 2, respectively, a cathode 3 and an anode 4 are installed in a bulb 1 in which heavy hydrogen or hydrogen is sealed and a discharge passage communicating both electrodes through a small hole in the diaphragm is formed. Transmission holes 4' and 6, 6' for radiated light are formed respectively in the anode 4 and the diaphragm 2 on the optical axis passing the center of the small hole 5 and at the same time ultraviolet ray transmitting windows 8, 9 are formed symmetrically in the bulb 1 on the optical axis. Consequently, radiated light is obtained from two direction and an optical system is obtained wherein the system does not need to use a beam splitter and has two times higher brightness than a conventional one and in which attenuation of radiated light does not occur. As a result, an optical apparatus whose S/N ratio is improved and which has high sensitivity and can detect faint concentration is obtained.

64. 发明专利

JPH04370642A HEAVY HYDROGEN DISCHARGE TUBE 失效
公开(公告)号：JPH04370642A
公开(公告)日：1992-12-24
申请号：JP14712691
申请日：1991-06-19
申请人： HITACHI LTD
发明人： MATSUNO HIROMITSU , YASUDA MAKOTO , ARAI YOJI , FUKUDA TAKESHI
IPC分类号： G01N21/01 , H01J61/06 , H01J61/067 , H01J61/68
摘要： PURPOSE:To obtain a heavy hydrogen discharge tube with a stable light output and a long service life by using a cathode to which an electron emitting substance is attached to fill the spaces between primary coils to form a double coil. CONSTITUTION:A double coil made by forming a secondary coil 24 by winding primary coils 23 which are made by winding at least metallic wires is used, and a cathode to which an electron emitting substance 31 is attached is used to fill the spaces 30 of the neighboring primary coils 23. As a result, the amount of the electron emitting substance is increased, a long service life is obtained, and since there is the electron emitting substance continuously in the spaces, the movement of the cathode luminescent spot is generated continuously and smoothly, and a shaking of the discharge is hardly generated. Consequently, the light output can be stabilized.

65. 发明专利

JPH04155742A LIGHT IRRADIATION DEVICE 失效
公开(公告)号：JPH04155742A
公开(公告)日：1992-05-28
申请号：JP27899690
申请日：1990-10-19
申请人： HITACHI LTD
发明人： KONAME KANJI , SHINADA SHINICHI , NARISEI KENJI , ARAI YOJI , URATAKI ETSUO
IPC分类号： F21V19/00 , H01J61/30 , H01J61/34 , H01J61/88 , H01K7/00
摘要： PURPOSE:To achieve the long life of a lamp by closing the outgoing opening of a convergent mirror airtight with a cover that transmits only visible ray, and by either making it in a closed spatial vacuum condition, or making it filled with inert gas. CONSTITUTION:The emission center of an emission tube 1 falles on the focal point of a rotational paraboloid convergent mirror 2 provided with a visible ray reflecting film on the inner surface 3. The outgoing side opening of the mirror is covered with a cover plate 9, and a space 11 surrounded by the mirror 2 and the cover plate 9 is closed airtight. The space 11 is made to be in a vacuum condition, or is filled with inert gas. As the cover plate 9, for example, the plate on which a multilayered deposition film that preferentially reflects the light of wavelength of no shorter than 0.7-0.8mum, is mounted on the outer surface of hard glass that absorbs ultraviolet, is used. Since the emission tube 1 can be enlarged thereby, the life of emission tube 1 can be made longer due to the reduction in tube wall load. The transmission of ultraviolet as well as infrared can be suppressed by the cover plate 9.

66. 发明专利

JPH04101347A DEUTERIUM DISCHARGE LAMP 失效
公开(公告)号：JPH04101347A
公开(公告)日：1992-04-02
申请号：JP21701090
申请日：1990-08-20
申请人： HITACHI LTD
发明人： ARAI YOJI , HIROTA TAISUKE , OISHI KONOSUKE
IPC分类号： H01J61/35
摘要： PURPOSE:To determine the lighting time range to obtain stable light and to perform analysis highly precisely by sticking a membrane of a substance which photo-reacts by ultraviolet rays to a discharge pipe. CONSTITUTION:A membrane 6 of a substance which is photoreactive by ultraviolet rays is stuck to a bulb 1. Ultraviolet-rays emitted from an electrode part 3 are repeatedly reflected and transmitted in the thickness of the bulb 1 made of quartz and transmitted to the photoreactive substance membrane. The transmitted ultraviolet-rays radiate the phototreactive substance membrane 6 and due to the accumulation of the radiated light, the photoreactive substance membrane 6 changes its color in proportion to the lamp lighting period. As a result, transmitted light or the quantity of the reflected light is detected optically or by visual observation of the photoreactive membrane and the terminal period of a discharge lamp is easily judged.

67. 发明专利

JPH02106865A FLUORESCENT LAMP 失效
公开(公告)号：JPH02106865A
公开(公告)日：1990-04-18
申请号：JP25946788
申请日：1988-10-17
申请人： HITACHI LTD
发明人： ARAI YOJI , TAKADA HIROSHI , SAIDA SHIGEAKI
IPC分类号： H01J61/32 , H01J61/42
摘要： PURPOSE:To orient all the fluorescence emitted from each bulb collectively in a fixed direction and improve the orienting property of radiating direction by disposing the window part of each bulb in parallel spatially. CONSTITUTION:The luminescence from a phosphor adhered to the inner wall surface of each bulb 1a-3d is direct emitted outward of each bulb through a narrow transparent window part 6a-6d formed by cutting each phosphor coat 5 adhered to each inner wall surface of the bulb 1a-1d along the cylindrical bus of each bulb, and also emitted from the luminescent point to the outside through each transparent window part 6a-6d after reflected in other points of the phosphor inner surface, so that the fluorescence radiating effect through the window part is reinforced. Thus, the fluorescence emitted through each transparent window part 6a-6d is emitted collectively and in parallel to each other from each window part of a narrow width having the center in the normal direction of the virtual spatial plane P. Hence, the orienting property of radiating direction can be increased.

68. 发明专利

JPS63289753A SMALL-SIZED METAL HALIDE LAMP 失效
公开(公告)号：JPS63289753A
公开(公告)日：1988-11-28
申请号：JP12378987
申请日：1987-05-22
申请人： HITACHI LTD
发明人： YASUDA MAKOTO , MIYASHITA HISASHI , ARAI YOJI
IPC分类号： H01J61/54
摘要： PURPOSE:To have easy lighting/starting with low impression voltage by providing molybdenum foil in close contact with the outer wall of a light emitting tube, and by constituting so that the width of molybdenum foil is specifically related to the wall thickness of the light emitting tube. CONSTITUTION:By a molybdenum wire 21, molybdenum foil 20 is fixed to a lead 14 in close contact with the exterior surface of a quartz light emitting tube 11 and put in electrical contact with an electrode 18. Here the construction is such that d>=0.6a, where d is width of molybdenum foil, and a wall thickness of light emitting tube. Mercury, halide metal, and xenon gas for lighting/starting are encapsulated in the light emitting tube 11. At the time of lighting/starting, an electrode near the ground potential is impressed on the electrode 18 and a stretching voltage on another electrode 17, and now discharge destruction will occur in the space between the electrode 17 and foil 20. Because the width of foil 20 is sufficient, fine discharge generated around the electrode 17 propagates easily along the foil 20 to attain the electrode 18.

69. 发明专利

JPS61121292A Discharge lamp lighting apparatus 失效
公开(公告)号：JPS61121292A
公开(公告)日：1986-06-09
申请号：JP24064384
申请日：1984-11-16
申请人： Hitachi Ltd
发明人： MIYASHITA HISASHI , YASUDA MAKOTO , MURAYAMA SEIICHI , ARAI YOJI , YAMADA FUJIO
IPC分类号： H05B41/18

70. 发明专利

JPS5913696B2 JPS5913696B2 - 失效
公开(公告)号：JPS5913696B2
公开(公告)日：1984-03-31
申请号：JP585177
申请日：1977-01-24
申请人： Hitachi Ltd
发明人： MAYAMA SHINJI , ARAI YOJI , KOGA TADATAKA , OOISHI KONOSUKE
IPC分类号： H01J61/68 , G01N21/31 , H01J61/66
CPC分类号： H01J61/66

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