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公开(公告)号：US10910210B2
公开(公告)日：2021-02-02
申请号：US16471043
申请日：2018-01-10
Applicant: Ushio Denki Kabushiki Kaisha
Inventor： Hideaki Yagyu , Ryosuke Ikeno , Masahiro Sasaki
Abstract: The present invention has as its object the provision of an ultraviolet sterilizer that can reduce ultraviolet light in a wavelength region of 230 to 300 nm, which is harmful to the human body, and can output effective light in a wavelength region of 200 to 230 nm with high emission intensity. The ultraviolet sterilizer of the present invention is an ultraviolet sterilizer comprising: an ultraviolet light source; a lamp storage chamber for storing the ultraviolet light source; and a light guiding part for guiding light from the ultraviolet light source, in which a band pass filter for reducing ultraviolet light in a wavelength region harmful to a human body is provided at least one of a position between the light guiding part and the lamp storage chamber and a position of a light outputting leading end of the light guiding part, and an inner surface of the light guiding part is formed from an ultraviolet absorbing member that absorbs the ultraviolet light in the wavelength region harmful to the human body.
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公开(公告)号：US12128150B2
公开(公告)日：2024-10-29
申请号：US17764078
申请日：2020-10-05
Applicant: Ushio Denki Kabushiki Kaisha
Inventor： Hideaki Yagyu
IPC: A61L2/10
CPC classification number: A61L2/10 , A61L2202/11
Abstract: Provided is a compact ultraviolet irradiation device in which a degree of an adverse effect on the human body is suppressed. The ultraviolet irradiation device includes: a lamp house on the surface of which a light extraction surface is formed; an excimer lamp accommodated in the lamp house, a main emission wavelength of which belongs to a first wavelength band of 190-225 nm; an optical filter that is arranged on the light extraction surface and substantially transmits the ultraviolet light in the first wavelength band and substantially reflect the ultraviolet light of a wavelength of 240-300 nm; and a reflecting surface that is a surface located outside the luminous tube of the excimer lamp and inclined with respect to the light extraction surface, the reflecting surface exhibiting reflectivity with respect to the ultraviolet light in the first wavelength band.
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公开(公告)号：US11651950B1
公开(公告)日：2023-05-16
申请号：US18050264
申请日：2022-10-27
Applicant: Ushio Denki Kabushiki Kaisha
Inventor： Hideaki Yagyu
CPC classification number: H01J61/302 , H01J61/16 , H01J61/361
Abstract: An excimer lamp includes light-emitting gases containing krypton gas and chlorine gas in a sealing body composed of fused quartz glass having an absorption band at least in a wavelength band of 240 nm to 260 nm. An ultraviolet light irradiation device includes: an excimer lamp having light-emitting gases containing krypton gas and chlorine gas in a sealing body; a housing having an extraction part for extracting ultraviolet light emitted from an excimer lamp; and fused quartz glass disposed in the extraction part and having an absorption band at least in a wavelength band of 240 nm to 260 nm.
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公开(公告)号：US11501963B2
公开(公告)日：2022-11-15
申请号：US17404046
申请日：2021-08-17
Applicant: Ushio Denki Kabushiki Kaisha
Inventor： Hideaki Yagyu
Abstract: An excimer lamp is such that that an interior of a discharge vessel is filled with a first gas including krypton (Kr) or xenon (Xe); a second gas including chlorine (Cl) or bromine (Br); and a third gas which is at least one species selected from among the group consisting of argon (Ar), neon (Ne), and helium (He), and which exhibits a partial pressure Pb that is not less than a partial pressure Plg of the first gas.
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公开(公告)号：US11776803B2
公开(公告)日：2023-10-03
申请号：US17399647
申请日：2021-08-11
Applicant: Ushio Denki Kabushiki Kaisha
Inventor： Hideaki Yagyu
CPC classification number: H01J61/16 , H01J61/06 , H01J65/046 , A61L2/10
Abstract: To improve startability in a UV irradiation apparatus equipped with excimer lamps. The UV irradiation apparatus includes a plurality of excimer lamps each having a light-emitting tube filled with a discharge gas containing a noble gas. The plurality of excimer lamps includes a first excimer lamp filled with the discharge gas at a first enclosed gas pressure and a second excimer lamp filled with the discharge gas at a second enclosed gas pressure lower than the first enclosed gas pressure. The first excimer lamp is placed in a position such that at least part of light emitted from the second excimer lamp is allowed to enter the first excimer lamp.
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Patent Agency Ranking
公开(公告)号：US11373855B2
公开(公告)日：2022-06-28
申请号：US17397661
申请日：2021-08-09
Applicant: Ushio Denki Kabushiki Kaisha
Inventor： Hideaki Yagyu
Abstract: An excimer lamp includes a discharge vessel in which a rare gas and a halogen are enclosed. The excimer lamp also includes at least one first electrode and at least one second electrode for generating a dielectric barrier discharge inside the discharge vessel. The discharge vessel has a discharge forming region and a non-discharge region such that discharging takes place in the discharge forming region and no discharging takes place in the non-discharge region. The discharge forming region is formed between the first electrode(s) and the second electrode(s). The non-discharge region communicates with the discharge forming region. The excimer lamp satisfies a following equation: (Vb×Ph)/Sd≥4.50 where Vb [mm3] represents a space volume inside the discharge vessel, Sd [mm2] represents an inner surface area of the discharge vessel in the discharge forming region, and Ph [Torr] represents a halogen-atoms partial pressure enclosed in the discharge vessel.
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公开(公告)号：US09330897B2
公开(公告)日：2016-05-03
申请号：US14721432
申请日：2015-05-26
Applicant: USHIO DENKI KABUSHIKI KAISHA
Inventor： Hideaki Yagyu
CPC classification number: H01J61/12 , H01J61/125 , H01J61/16 , H01J61/302 , H01J61/366 , H01J61/52 , H01J61/523
Abstract: A mercury-free discharge lamp includes a luminous tube, and a pair of electrodes in the luminous tube such that the electrodes face each other in the luminous tube. The discharge lamp also includes a pair of thermal insulation films formed on an outer surface of the luminous tube around the electrodes, respectively. Zinc, halogen, and a noble gas are sealed in the luminous tube. A metal is also sealed in the luminous tube. The metal has a lower ionization energy than zinc. A ratio of a molar density of the metal to a molar density of zinc is 0.001 to 0.05. The mercury-free discharge lamp has a long life and can emit an ultraviolet beam in a short wavelength range (200-350 nm) at a high output and a high luminous efficacy without causing devitrification of the luminous tube.
Abstract translation: 无汞放电灯包括发光管和发光管中的一对电极，使得电极在发光管中彼此面对。 放电灯还包括分别形成在电极周围的发光管的外表面上的一对绝热膜。 锌，卤素和惰性气体密封在发光管中。 金属也被密封在发光管中。 金属的电离能比锌低。 金属的摩尔密度与锌的摩尔密度的比为0.001〜0.05。 无汞放电灯寿命长，能够以高输出和高发光效率在短波长范围（200-350nm）发射紫外线，而不会引起发光管失透。
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公开(公告)号：US12154781B2
公开(公告)日：2024-11-26
申请号：US17619927
申请日：2020-08-05
Applicant: Ushio Denki Kabushiki Kaisha
Inventor： Hideaki Yagyu
Abstract: Provided is an ultraviolet irradiation device including an excimer lamp, a main emission wavelength of which belongs to a wavelength band of 190-230 nm (first wavelength band), the ultraviolet irradiation device that shows high startability. This ultraviolet irradiation device includes: a lamp house on at least one surface of which a light extraction surface is formed; an excimer lamp accommodated in the lamp house, the excimer lamp that emits ultraviolet light, a main emission wavelength of which belongs to a first wavelength band of 190-230 nm; and a start assist light source arranged in a position in which ultraviolet light, a main emission wavelength of which belongs to a second wavelength band of 250-300 nm, is capable of being irradiated to the excimer lamp.
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公开(公告)号：US12009198B1
公开(公告)日：2024-06-11
申请号：US18555367
申请日：2022-04-15
Applicant: Ushio Denki Kabushiki Kaisha
Inventor： Akihiro Kuno , Hideaki Yagyu , Shigeki Fujisawa
Abstract: The startability of an ultraviolet ray generation device including an excimer lamp as an ultraviolet light source is to be improved. An ultraviolet ray generation device includes: an excimer lamp having a discharge container in which a discharge gas is sealed; a first electrode body and a second electrode body that are disposed so as not to be exposed to the discharge gas; and a first conductor electrically connected to one of the first electrode body and the second electrode body. The first conductor faces the other electrode body or a second conductor electrically connected to the other electrode body, through a dielectric member. The first conductor causes an atmospheric discharge around the first conductor.
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公开(公告)号：US11373854B2
公开(公告)日：2022-06-28
申请号：US17396944
申请日：2021-08-09
Applicant: Ushio Denki Kabushiki Kaisha
Inventor： Hideaki Yagyu , Atsushi Imamura , Manabu Mori
Abstract: A device for emitting ultraviolet light includes at least one excimer lamp and a housing for the excimer lamp(s). Each excimer lamp has a discharge vessel filled with light-emitting gases, and a pair of first and second electrodes that are placed in contact with the discharge vessel and produce a dielectric barrier discharge inside the discharge vessel. The housing is made of an insulating and heat-resistant resin material. The housing is configured to house the excimer lamp(s), and has a light-emitting window that allows light with a center wavelength in a range from 200 nm to 230 nm emitted from the excimer lamp(s) to exit from the housing.
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