Ushio Denki Kabushiki Kaisha

Kabushiki Kaisha Nikon

Tatsushi Igarashi

Hiromitsu Matsuno

Yukio Yasuda

Nobuyuki Hishinuma

Tatsumi Hiramoto

Akiyasu Yamaguchi

Fumitoshi Takemoto

Kenichi Hirose

Kunio Kasagi

Tetsuji Arai

Yoshinori Aiura

Takashi Mori

Masashi Okamoto

Christof Metzmacher

Yoshihiro Horikawa

Hideaki Yagyu

Yasuo Oonishi

Akihiko Sugitani

Akira Miyaji

Takeo Matsushima

Mitsuo Narita

Hiroyuki Ohashi

Hironobu Yabuta

Hiroto Sato

Masanori Sugihara

Achim Weber

Koichi Kamei

Rolf Theo Anton Apetz

Keisuke Naito

Takashi Asahina

Kenzo Kai

Yoshihiko Okumura

Tsuneo Okanuma

Noritaka Ashizawa

Takashi Ito

Shoichi Mayama

Osamu Mizuno

Yasuhiko Wakahata

Shinichi Iso

Kazuo Nakamura

Hermann Giese

An optical filter which is used in an inactivation processing device that performs inactivation processing on a processing target microorganism. The optical filter, when discharge light from a light source in which the center wavelength of the discharge light is between 190 nm and 237 nm is incident at an incident angle 0°, transmits at least a portion of the ultraviolet ray equal to or greater than 190 nm and equal to or less than 230 nm and at least a portion of the ultraviolet ray greater than 230 nm and equal to or less than 237 nm, and attenuates the light intensity between 200 and 280 nm not including a wavelength region equal to or greater than 190 nm and equal to or less than 237 nm.

Optical filter used in a microbe inactivation processing device

A sterilizing device includes a housing having an opening in at least one direction thereof. The housing also has a hollow portion configured to allow insertion of an object (target) including part of a human body from the opening into the hollow portion. The sterilizing device also includes at least one air blower unit configured to send a flow of air toward an interior of the hollow portion, and at least one ultraviolet light emitting unit configured to emit ultraviolet light toward the interior of the hollow portion. The ultraviolet light emitted from each ultraviolet light emitting unit includes at least part of ultraviolet light having a wavelength between 190 nm and 230 nm and at least part of ultraviolet light having a wavelength between 230 nm and 237 nm, but does not include ultraviolet light having a wavelength below 190 nm and beyond 237 nm.

Dry sterilizing device and dry sterilizing method

Disclosed are a microbe inactivation processing method that can perform inactivation processing of microbes, while damage to human body cells is prevented or inhibited, with an efficient use of light emitted from a light source and the obtainment of a large effective irradiation area. Also provided are a cell activation processing method that can reliably activate target cells with high efficiency. The microbe inactivation processing method includes: a step of applying light emitted from a light source through an optical filter, with the light source configured to emit light having a wavelength within a wavelength range of 190 nm to 237 nm, in order to perform inactivation processing of a target microbe. When the light emitted from the light source is incident at an incident angle of 0&#xb0;, the optical filter transmits at least a part of ultraviolet light having a wavelength within a range of not lower than 190 nm and not more than 230 nm, and transmits at least a part of ultraviolet light having a wavelength within a range of more than 230 nm and not more than 237 nm, and the optical filter blocks transmission of ultraviolet light having a wavelength out of a wavelength range of not lower than 190 nm and not more than 237 nm.

Microbe inactivation processing method and cell activation processing method

Disclosed is a sterilization apparatus that can kill or inactivate sterilization target organisms present on a body or in the body without damage to human cells and has high energy efficiency. A sterilization apparatus is configured to irradiate a sterilization target organism on a body or in the body with light and thereby killing or inactivating the sterilization target organism. The sterilization apparatus includes: a light source configured to emit light having wavelengths within a wavelength range of 190 nm to 230 nm and a wavelength range of 230 to 300 nm; a power supply unit configured to supply power to the light source; a control unit configured to control the power supply unit; and an optical filter. The power supply unit is controlled by the control unit so that an irradiation amount of light having a wavelength within the wavelength range of 230 to 300 nm in one light irradiation is not more than 9 mJ/cm.

Sterilization apparatus

Disclosed are a microbe inactivation processing method that can perform inactivation processing of microbes, while damage to human body cells is prevented or inhibited, with an efficient use of light emitted from a light source and the obtainment of a large effective irradiation area. Also provided are a cell activation processing method that can reliably activate target cells with high efficiency. The microbe inactivation processing method includes: a step of applying light emitted from a light source through an optical filter, with the light source configured to emit light having a wavelength within a wavelength range of 190 nm to 237 nm, in order to perform inactivation processing of a target microbe. When the light emitted from the light source is incident at an incident angle of 0&#xb0;, the optical filter transmits at least a part of ultraviolet light having a wavelength within a range of not lower than 190 nm and not more than 230 nm, and transmits at least apart of ultraviolet light having a wavelength within a range of more than 230 nm and not more than 237 nm, and the optical filter blocks transmission of ultraviolet light having a wavelength out of a wavelength range of not lower than 190 nm and not more than 237 nm.

Disclosed are a microbe inactivation processing device that can perform inactivation processing of microbes, while damage to human body cells is prevented or inhibited, with an efficient use of light emitted from a light source and the obtainment of a large effective irradiation area. Also provided are a cell activation processing device that can reliably activate target cells with high efficiency. The microbe inactivation processing device includes: a light source configured to emit light having a wavelength within a wavelength range of 190 nm to 237 nm; a power supply unit configured to supply electric power to the light source; a control unit configured to control the power supply unit; and an optical filter. The microbe inactivation processing device is configured to perform inactivation processing of a target microbe by applying the light emitted from the light source through the optical filter. When the light emitted from the light source is incident at an incident angle of 0&#xb0;, the optical filter transmits at least a part of ultraviolet light having a wavelength within a range of not lower than 190 nm and not more than 230 nm, and transmits at least a part of ultraviolet light having a wavelength within a range of more than 230 nm and not more than 237 nm, and the optical filter blocks transmission of ultraviolet light having a wavelength out of a wavelength range of not lower than 190 nm and not more than 237 nm.

Microbe inactivation processing device and cell activation processing device

Disclosed herein a rotational type foil trap that is capable of avoiding the transmission rate of the EUV light to be lowered even when the EUV light source operates with the high input power and also suppressing the temperature increase of the foil to attain a sufficient life duration. In the rotational type foil trap, one end of each of foils is inserted into each of a plurality of grooves provided on a side face of a center support, and the center support and the each of the foils are fixed together by brazing.

Foil trap and light source device using such foil trap

A metal halide lamp with a distance of less than 3.0 mm between the electrodes, in which in the hermetically sealed portion no cracks occur, which can be produced without difficulty, and which enables advantageous operation is achieved with a halide lamp in which an arc tube made of quartz glass contains a cathode and an anode spaced from each other at a distance of less than or equal to 2.9 mm together with mercury and metal halides, and which is operated with a nominal wattage range of from 100 to 400 W using direct current, by causing the ratio D/H to be greater than or equal to 1.9 when D is the maximum inside diameter in millimeters in a direction which orthogonally intersects the axial direction of the electrodes in the discharge space and H is the length of the cathode projecting within the discharge space, also in millimeters.

Metal halide lamp

A discharge lamp in which ultraviolet radiation of short wavelengths can be advantageously cut and in which the amount of emitted light (i-line) of 365 nm wavelength can be increased is achieved according to the invention by providing a quartz glass arc tube that is coated with a plurality of coating layers which include a layer which has Ta.sub.2 O.sub.5 as the main component, and at least one additional coating layer which has a refraction coefficient which differs from the refraction coefficient of the coating layer having the Ta.sub.2 O.sub.5 main component. These layers act to prevent the reflection of light with a wavelength of 365 nm which is incident on the coatings on the arc tube and to cut at least 50% of the ultraviolet radiation having wavelengths of 230 nm or less. According to the invention, the coating layers can be provided on the outer side of the arc tube, on the inner side of the arc tube, or on both on the inner and outer sides of the arc tube.

Discharge lamp having a plurality of coating layers

A light source device in which the radiated light from the dielectric barrier discharge lamp can always be stabilized even if the discharge vessel of the dielectric barrier discharge lamp is large or the load on the tube wall within the discharge vessel is small. This is achieved according to the invention by the provision of a light source device having a discharge lamp which has a generally cylindrical, coaxial double-tube arrangement of an outer tube and an inner tube, in which there is an outer electrode on the outer tube, in which there is an inner electrode on the inner tube, and in which a discharge space between the inner and outer tubes is filled with a discharge gas for formation of excimer molecules by a dielectric barrier discharge, and of a power source for operating this discharge lamp in accordance with the relationship: Vs/Vp.ltoreq.0.5 where Vs is the starting voltage and Vp is the voltage applied to the discharge lamp during steady-state luminous operation.

Light source device using a double-tube dielectric barrier discharge

To maintain the relative positional relationship between an inner tube and an inner electrode of a dielectric barrier discharge tube having a roughly cylindrical, double tube arrangement of an outer tube coaxially arranged about an inner tube with a discharge space defined therebetween, an outer electrode on an outer surface of the outer tube, an inner electrode on an inner surface of the inner tube, and a discharge gas which forms excimer molecules by a dielectric barrier discharge filling said discharge space, despite repeated expansion and contraction of the inner electrode due to the dielectric barrier discharge lamp being repeatedly turned on and off, according to the invention, the inner electrode is formed of a substantially tubular metal component or the like, and a motion preventing component is provided at opposite ends of the inner electrode for maintaining an axial position of the inner electrode relative to the inner tube.

Dielectric barrier discharge lamp

A cadmium discharge lamp which can emit line spectra with wavelengths of 214.+-.2 nm with high power is achieved by encapsulating metallic cadmium, in an amount producing a pressure in stationary lighting operation in the range from 2 kPa to 13.7 kPa, together with at least one of the rare gases xenon, krypton, argon and neon, in a temperature-controlled arc tube which is provided with electrodes located adjacently opposite one another, and by operating the lamp such that J/P is in the range from 1.4 to 75, where J is the discharge current in stationary lighting operation in amperes and the P is the cadmium pressure in stationary lighting operation.

Cadmium discharge lamp of the short arc type and method of producing UV

A dielectric barrier discharge lamp having a generally cylindrical double-tube arrangement of an outer tube coaxially disposed about an inner tube, with an outer electrode disposed on an outside surface of the outer tube, an inner electrode disposed on an inside surface of the inner tube, and a discharge space provided between the outer tube and the inner tube which is filled with a discharge gas for formation of excimer molecules by dielectric barrier discharge achieves firm engagement of the inner electrode against the inner tube and a stable discharge over a long time even if part of the electrode corrodes due to the ozone produced or it wears. This is achieved by embodiments in which the inner electrode is a generally tubular part which is slit in an axial direction along the full length thereof. The tubular part can be a single cylindrically sheet having opposite longitudinally extending edges spaced from each other by a gap or overlapped. Alternatively, the tubular part can be formed of a pair of substantially semi-cylindrical parts which are separated by a gap between each pair of longitudinally extending edges.

An emission device which operates a cadmium lamp with a light intensity sufficient for used in industrial applications is achieved by an emission device having a cadmium lamp with a fluorescent tube within which a cathode and an anode are space a small distance apart and a buffer gas for easier initiation of luminous operation and metallic cadmium in an amount per unit volume of the fluorescent tube of 1.times.10.sup.-4 g/cm.sup.3 to 3.times.10.sup.-3 g/cm.sup.3 are encapsulated, and a power source device for supplying an electrical input between the cathode and the anode in an electrical input range from 0.5 kW to 5.0 kW with the condition:

Emission device with a cadmium lamp

In a dielectric barrier discharge lamp, in which a discharge vessel, in which a discharge gas forming 'excimer' molecules is encapsulated, is provided with a dielectric provided with a netlike electrode and a window, through which the light goes, the first object of the invention is achieved by an arrangement in which a thickness of ends of the above-described netlike electrodes is greater than the average thickness of the entire electrode. Another object of the invention is achieved by an arrangement in which a holder incorporated in the discharge vessel has an outer dimension that is less than/equal to an outer dimension of the netlike electrodes. A further object of the invention is achieved by an arrangement by which the discharge vessel has a hollow cylindrical shape formed from an external tube and an internal tube and a means for hermetic sealing is arranged inside the internal tube.

Growing community of inventors

Himeji, Japan

Tatsushi Igarashi