WO2023084669A1 - Système de rayonnement de lumière ultraviolette et procédé de rayonnement - Google Patents

Système de rayonnement de lumière ultraviolette et procédé de rayonnement Download PDF

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Publication number
WO2023084669A1
WO2023084669A1 PCT/JP2021/041475 JP2021041475W WO2023084669A1 WO 2023084669 A1 WO2023084669 A1 WO 2023084669A1 JP 2021041475 W JP2021041475 W JP 2021041475W WO 2023084669 A1 WO2023084669 A1 WO 2023084669A1
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Prior art keywords
ultraviolet light
irradiation
unit
target area
area
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PCT/JP2021/041475
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English (en)
Japanese (ja)
Inventor
聖 成川
友宏 谷口
誉人 桐原
亜弥子 岩城
和秀 中島
隆 松井
裕之 飯田
千里 深井
悠途 寒河江
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日本電信電話株式会社
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Priority to PCT/JP2021/041475 priority Critical patent/WO2023084669A1/fr
Publication of WO2023084669A1 publication Critical patent/WO2023084669A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultraviolet radiation

Definitions

  • the present disclosure relates to an ultraviolet light irradiation system and an irradiation method thereof that perform sterilization and virus inactivation using ultraviolet light.
  • Non-Patent Document 1 is an autonomous mobile robot that irradiates ultraviolet light. By irradiating the robot with ultraviolet light while moving in a room in a building such as a hospital room, the robot can automatically realize sterilization in a wide range without human intervention.
  • Stationary air purifier The product of Non-Patent Document 2 is a device that is installed on the ceiling or at a predetermined place in a room, and performs sterilization while circulating the air in the room.
  • Non-Patent Document 3 is a portable apparatus equipped with an ultraviolet light source. A user can bring the device to a desired area and irradiate it with ultraviolet light. Therefore, the device can be used in various places.
  • Kantum Ushikata Co., Ltd. website https://www.kantum.co.jp/product/sakkin_robot/sakkinn_robot/UVD_robot
  • June 22, 2020 Iwasaki Electric Co., Ltd. website https://www.iwasaki.co.jp/optics/ARrilization/air/air03.html
  • June 22, 2020 Funakoshi Co., Ltd. website https://www.funakoshi.co.jp/contents/68182
  • Non-Patent Document 1 has the following problems.
  • Economy Since the product of Non-Patent Document 1 is irradiated with high-output ultraviolet light, the apparatus becomes large and expensive. Therefore, the product of Non-Patent Document 1 has a problem that it is difficult to realize an economical system.
  • Non-Patent Document 3 cannot irradiate ultraviolet light to narrow pipes or areas where people cannot enter.
  • the product of Non-Patent Literature has a problem of versatility in that it can irradiate any place with ultraviolet light.
  • (3) Operability The product of Non-Patent Document 3 is portable and can be irradiated with ultraviolet light at various locations. However, in order to obtain sufficient effects such as sterilization at the target location, the user is required to have skill and knowledge, and there is a problem in operability.
  • an ultraviolet light irradiation system 300 using an optical fiber as shown in FIG. 1 is conceivable.
  • This ultraviolet light irradiation system transmits ultraviolet light from the light source 11 using a thin and flexible optical fiber, and irradiates the ultraviolet light output from the tip of the optical fiber 14 to an irradiation target area AR to be sterilized or the like with pinpoint accuracy.
  • the versatility of the above problem (2) can be solved because the ultraviolet light can be irradiated to any place simply by moving the irradiation unit 13 at the tip of the optical fiber 14 .
  • the operability of the above problem (3) can be resolved.
  • an optical distribution unit 12 such as an optical splitter in the optical transmission line 16 to form a P-MP (Point to MultiPoint) system configuration such as FTTH (Fiber To The Home)
  • FTTH Fiber To The Home
  • the ultraviolet light irradiation system using optical fibers has the following problems.
  • the problem will be explained using the ultraviolet light irradiation system 301 in FIG.
  • Even in a single irradiation target area AR there are cases where it is divided into an area AR-o where there are few bacteria and viruses and does not require sterilization, etc., and an area AR-s where there are many bacteria and viruses and need sterilization etc. in a short time. be.
  • the irradiation unit 13 is a lens system with a fixed magnification, and irradiates the entire irradiation target area AR with ultraviolet light.
  • the area AR-o and the area AR-s are divided as shown in FIG.
  • the irradiation range of the ultraviolet light cannot be changed, and it is difficult to concentrate the area AR-s for sterilization or the like. be.
  • the ultraviolet light irradiation systems 300 and 301 using optical fibers as shown in FIGS. 1 and 2 have a problem that it is difficult to perform sterilization or the like in a short time while flexibly responding to a desired region.
  • the object of the present invention is to provide an ultraviolet light irradiation system and its irradiation method that can flexibly respond to a desired area and perform sterilization, etc. in a short time.
  • the ultraviolet light irradiation system includes an irradiation unit in which the beam diameter and irradiation direction of ultraviolet light are variable, and concentrates on areas that require sterilization etc. in a short time. It was decided to irradiate with ultraviolet light.
  • the ultraviolet light irradiation system includes: an ultraviolet light source that generates ultraviolet light; an irradiation unit that irradiates the irradiation target area with the ultraviolet light; an irradiation range control unit that changes the irradiation range of the ultraviolet light; Prepare.
  • the irradiation range control unit of the ultraviolet light irradiation system causes the irradiation unit to detect the need to irradiate the ultraviolet light when there is a region in the irradiation target region that needs to be irradiated with the ultraviolet light. It is characterized in that the ultraviolet light is focused on the high region and irradiated with the ultraviolet light, and in other cases, the ultraviolet light is spread over the entire irradiation target region.
  • an irradiation method is an irradiation method for an ultraviolet light irradiation system that irradiates an irradiation target area with ultraviolet light, When there is a region in the irradiation target area that needs to be irradiated with the ultraviolet light, the ultraviolet light is focused on the region with the high necessity, and in other cases, the entire irradiation target region It is characterized in that the ultraviolet light is spread and irradiated.
  • the irradiation unit can change the irradiation range of ultraviolet light. Therefore, when a region requiring sterilization or the like occurs in the irradiation target region, the irradiation unit can reduce the beam diameter of the ultraviolet light and irradiate the region intensively. Further, when there is no area requiring sterilization or the like in the irradiation target area (normal time), the irradiation unit widens the beam diameter of the ultraviolet light and irradiates the entire irradiation target area with the ultraviolet light. Therefore, the present invention can provide an ultraviolet light irradiation system and an irradiation method thereof that can flexibly respond to a desired region and perform sterilization or the like in a short time.
  • the irradiation unit of the ultraviolet light irradiation system according to the present invention is N (N is a natural number of 2 or more), and each of the irradiation units irradiates the ultraviolet light to N irradiation target areas, A light distribution section may be further provided for distributing the ultraviolet light to each of the irradiation sections.
  • a P-MP configuration ultraviolet light irradiation system can be provided.
  • the light distribution unit of the ultraviolet light irradiation system has a variable distribution ratio for distributing the ultraviolet light to each of the directions, and the direction to the irradiation unit that narrows and irradiates the ultraviolet light. You may increase the distribution ratio to By adjusting the distribution ratio to each direction as well as the irradiation direction of the ultraviolet light, it is possible to more flexibly meet the requirements of each irradiation target area.
  • the ultraviolet light irradiation system is further comprising a sensor unit that identifies the area within the irradiation target area and detects whether or not there is an avoidance target to be avoided from being exposed to the ultraviolet light in the irradiation target area;
  • the irradiation range control unit may cause the irradiation unit to selectively irradiate the region with the ultraviolet light during a time when the avoidance target is not present in the irradiation target region.
  • the ultraviolet light irradiation system is further comprising a monitor unit that observes the amount of the ultraviolet light emitted from the irradiation unit;
  • the irradiation range control unit narrows down the ultraviolet light to the irradiation unit when the amount of the ultraviolet light applied to the irradiation target area, which is being irradiated with the narrowed ultraviolet light, exceeds a predetermined value. to terminate the irradiation of the irradiation target area. After completing the sterilization of the desired area, it is possible to quickly return to the normal state (i.e., irradiate the entire irradiation target area with ultraviolet light).
  • the present invention can provide an ultraviolet light irradiation system and its irradiation method that can flexibly respond to a desired region and perform sterilization, etc. in a short time.
  • FIG. 3 is a diagram illustrating the ultraviolet light irradiation system 302 of this embodiment.
  • the ultraviolet light irradiation system 302 is an ultraviolet light source unit 11 that generates ultraviolet light; an irradiation unit 13 that irradiates the irradiation target area AR with the ultraviolet light; an irradiation range control unit 19 that changes the irradiation range of the ultraviolet light; Prepare.
  • the ultraviolet light source unit 11 outputs light in the ultraviolet region (ultraviolet light) that is effective for sterilization and the like.
  • the ultraviolet light source unit 11 and the irradiation unit 13 are connected by an optical transmission line 16, which is an optical fiber.
  • FIG. 4 is a diagram illustrating a cross section of an optical fiber that can be used for the transmission line 16.
  • Solid Core Optical Fiber This optical fiber has one solid core 52 in the clad 60 having a higher refractive index than the clad 60 .
  • Full means "not hollow”.
  • the solid core can also be realized by forming an annular low refractive index region in the clad.
  • Hole-assisted optical fiber This optical fiber has a solid core 52 in the clad 60 and a plurality of holes 53 arranged around the core.
  • the medium of the holes 53 is air, and the refractive index of air is sufficiently smaller than that of quartz-based glass. Therefore, the hole-assisted optical fiber has a function of returning light leaking from the core 52 due to bending or the like back to the core 52, and is characterized by a small bending loss.
  • This optical fiber has a hole group 53a of a plurality of holes 53 in the clad 60, and has an effective refractive index lower than that of the host material (glass or the like). This structure is called a photonic crystal fiber.
  • This structure can take a structure in which a high-refractive-index core with a changed refractive index does not exist, and light can be confined using the region 52a surrounded by the holes 53 as an effective core region.
  • photonic crystal fibers can reduce the effects of absorption and scattering losses due to additives in the core.
  • Optical characteristics that cannot be realized can be realized.
  • This optical fiber has a core region made of air. Light can be confined in the core region by forming a photonic bandgap structure with a plurality of holes in the cladding region or an anti-resonant structure with glass wires. This optical fiber has low nonlinear effects and is capable of delivering high power or high energy lasers.
  • Coupling Core Optical Fiber In this optical fiber, a plurality of solid cores 52 having a high refractive index are closely arranged in a clad 60 . This optical fiber guides light by optical wave coupling between solid cores 52 . Coupling-core optical fibers can disperse and transmit light as many times as the number of cores, so high power can be used for efficient sterilization. There is an advantage that the service life can be extended.
  • the irradiation unit 13 irradiates ultraviolet light from the ultraviolet light source unit 11 to a predetermined target location (irradiation target area AR) for sterilization or the like.
  • the irradiation unit 13 is composed of an optical system such as a lens designed for the wavelength of ultraviolet light. Further, the irradiation unit 13 can move the optical system to change the beam diameter and irradiation direction of the ultraviolet light to be irradiated.
  • the irradiation range control unit 19 instructs the optical system of the irradiation unit 13 about the beam diameter and irradiation direction of the ultraviolet light to be irradiated. For example, when an area AR-s that needs to be irradiated with the ultraviolet light occurs in the irradiation target area AR, the irradiation range control unit 19 restricts the ultraviolet light to the area AR-s. In other cases, the ultraviolet light is spread over the entire irradiation target area AR and irradiated. It is assumed that the area AR-s is within the irradiation target area AR.
  • An area AR-s with a large amount of bacteria and viruses may occur within the irradiation target area AR. In such a case, it is necessary to sterilize the area AR-s in a short time. On the other hand, in other areas of the irradiation target area AR, there is also an area AR-o in which the amounts of bacteria and viruses are small and sterilization or the like is unnecessary. As shown in FIG. 2, in the conventional irradiation unit 13, the beam diameter of the irradiated ultraviolet light was constant, so even if the area AR-s were generated, the ultraviolet light could not be concentrated there, and sterilization and the like could be performed in a short time. I didn't.
  • the irradiation unit 13 of this embodiment can arbitrarily set the beam diameter and irradiation direction of the ultraviolet light to be irradiated based on the instruction of the irradiation range control unit 19 . Therefore, when the area AR-s is generated, the irradiation range control unit 19 instructs the irradiation unit 13 on the beam diameter and irradiation direction of the ultraviolet light so that the ultraviolet light is irradiated thereon.
  • the illuminance of the ultraviolet light irradiated to the area AR-s is higher than usual (the state in which the entire irradiation target area AR is irradiated with ultraviolet light), and the area AR-s is irradiated in a shorter time than usual. Sterilization, etc. can be performed.
  • the irradiation range control unit 19 may narrow the beam diameter of the ultraviolet light, instruct the irradiation direction, and then return to normal after a certain period of time.
  • a monitor unit 41 for observing the amount of the ultraviolet light emitted from the irradiation unit 13 is further provided, and the irradiation range control unit 19 controls the irradiation target area irradiated with the narrowed ultraviolet light.
  • the irradiation unit 13 may stop irradiating the irradiation target area AR with the ultraviolet light narrowed down, and return to normal.
  • the monitor unit 41 may measure the amount of ultraviolet light input to the irradiation unit 13 through the optical transmission line 16, may measure the amount of ultraviolet light irradiated by the irradiation unit 13, or may measure the amount of ultraviolet light irradiated by the irradiation unit 13.
  • the amount of ultraviolet light received by the entire AR may be measured. Note that the amount of light is the integrated amount of light (unit: J), power (unit: W), illuminance in the irradiation target area AR (unit: W/m 2 ), energy per unit area in the irradiation target area AR (unit: J/m 2 or W ⁇ s/m 2 ).
  • the monitor unit 41 notifies the irradiation range control unit 19 of the measured amount of light as data D1.
  • the irradiation range control unit 19 compares the notified amount of light with a predetermined value (for example, the amount of light that can complete sterilization, etc.), and instructs the irradiation unit 13 to return to normal when the amount of light exceeds the predetermined value. .
  • the other area AR-o While the area AR-s is being sterilized, the other area AR-o is not irradiated with ultraviolet light and is not sterilized. If the time for sterilization, etc., to be performed is short, there is no effect on the increase in the amount of bacteria and viruses even if the ultraviolet light is not irradiated.
  • FIG. 6 is a diagram illustrating the ultraviolet light irradiation system 304 of this embodiment.
  • the ultraviolet light irradiation system 304 differs from the ultraviolet light irradiation system 302 in FIG. 3 in that it includes a sensor section 31 . In this embodiment, only the difference will be described.
  • the ultraviolet light irradiation system 304 specifies an area AR-s in the irradiation target area AR, and an avoidance target to be avoided in the irradiation target area AR from the ultraviolet light irradiation system 302 in FIG.
  • the irradiation range control unit 19 further includes a sensor unit 31 that detects whether H exists or not. The ultraviolet light is focused and irradiated.
  • the sensor unit 31 detects the existence and movement of each irradiation target area AR and avoidance targets (humans, animals, etc.) H in the vicinity thereof. For example, the sensor unit 31 performs temperature acquisition by a thermometer, infrared acquisition by an infrared sensor, image acquisition by a camera, light acquisition by LiDAR (Light Detection and Ranging), etc., and information processing (shape, face, fingerprint, vein, iris etc.) to detect the existence and movement of the avoidance target.
  • temperature acquisition by a thermometer infrared acquisition by an infrared sensor
  • image acquisition by a camera image acquisition by a camera
  • LiDAR Light Detection and Ranging
  • information processing shape, face, fingerprint, vein, iris etc.
  • the sensor unit 31 monitors not only whether or not the avoidance target H exists within the irradiation target area AR, but also the periphery of the irradiation target area AR. Therefore, based on the movement of the avoidance target H, the sensor unit 31 determines whether the avoidance target H will enter the irradiation target area AR or not, or whether the avoidance target H will move away from the irradiation target area AR. can be detected. Then, the sensor unit 31 notifies the irradiation range control unit 19 of the detection result.
  • the notification to the irradiation range control unit 19 may be wired or wireless.
  • FIG. 6A illustrates the normal state.
  • the ultraviolet light irradiation system 304 irradiates the entire irradiation target area AR with ultraviolet light.
  • the sensor unit 31 monitors whether or not the avoidance target H exists in the irradiation target area AR.
  • FIG. 6B illustrates a state in which the avoidance target H has entered the irradiation target area AR.
  • the sensor unit 31 notifies the irradiation range control unit 19 of the information.
  • the irradiation range control unit 19 causes the irradiation unit 13 to suspend irradiation of ultraviolet light.
  • the irradiation target area AR may be continuously irradiated with the power of the ultraviolet light lowered to a level that does not harm the object H to be avoided.
  • the sensor unit 31 detects which part of the irradiation target area AR the avoidance target H has stayed in, and also notifies the irradiation range control unit 19 of the information.
  • FIG. 6C illustrates the state after the avoidance target H has left the irradiation target area AR.
  • the sensor unit 31 notifies the irradiation range control unit 19 of the information.
  • the irradiation range control unit 19 causes the irradiation unit 13 to irradiate ultraviolet light with a narrowed beam diameter. At this time, the irradiation range control unit 19 designates the portion where the avoidance target H stayed as an area AR-s, and directs the irradiation unit 13 to direct ultraviolet light with a narrowed beam diameter toward the area AR-s.
  • the area AR-s can be sterilized in a short time without irradiating the avoidance target H with ultraviolet light. Further, as described with reference to FIG. 5, the monitoring unit 41 may be used to terminate the sterilization of the area AR-s.
  • FIG. 7 is a diagram illustrating the ultraviolet light irradiation system 305 of this embodiment.
  • the ultraviolet light irradiation system 305 is a P-MP configuration of the ultraviolet light irradiation system 302 in FIG. That is, the ultraviolet light irradiation system 305 has N irradiation units 13 (N is a natural number of 2 or more), and each of the irradiation units 13 (13-n; n is an integer from 1 to N) emits N ultraviolet light. It is characterized by further comprising a light distribution unit 12-11 that irradiates the irradiation target areas ARn and distributes the ultraviolet light to a route 14 to each irradiation unit 13-n.
  • the irradiation unit 13 has an irradiation target area AR in charge.
  • the irradiation unit 13-1 is in charge of the irradiation target area AR1
  • the irradiation unit 13-2 is in charge of the irradiation target area AR2
  • the irradiation unit 13-N is in charge of the irradiation target area ARN. .
  • the optical splitter 12-11 is an equal splitting coupler, an unequal splitting coupler, a variable splitting ratio coupler, or an optical switch.
  • the equal splitting coupler equally splits the power of the ultraviolet light input through the optical transmission line 16 to each output port.
  • the unequal splitting coupler splits the power of the ultraviolet light input through the optical transmission line 16 to each output port at a preset splitting ratio.
  • the unequal branch coupler is, for example, the unequal branch coupler disclosed in JP-A-2020-036068.
  • the variable branching ratio coupler can change the branching ratio according to an instruction from the irradiation range control unit 19 .
  • the branching ratio variable coupler branches the power of the ultraviolet light input through the optical transmission line 16 according to the branching ratio, and outputs the branched light to a plurality of output ports.
  • the variable branching ratio coupler has a configuration including a Mach-Zehnder interferometer that changes the branching ratio with a heater, as disclosed in Reference 1, for example. (Reference 1) NTT Technical Journal (https://www.ntt.co.jp/journal/0505/files/jn200505012.pdf), published in May 2005
  • the optical switch outputs the ultraviolet light input through the optical transmission line 16 to one of the output ports according to the switching timing indicated by the irradiation range control unit 19 .
  • the time during which ultraviolet light is output to each output port is called a time slot.
  • the "distribution ratio” means the time ratio in the case of an optical switch, and the branch ratio in the case of a coupler.
  • the ultraviolet light output from the output ports 1 to N is irradiated onto the irradiation target area ARn via the route 14 and the irradiation unit 13-n.
  • the route 14 is an optical fiber, and the optical fiber described with reference to FIG. 4 can be used.
  • the irradiation target area AR1 is in a normal state
  • the irradiation target area AR2 is in a state in which the ultraviolet light beam diameter is narrowed and the area AR-s is irradiated
  • the irradiation target area ARN is in a state where the ultraviolet light irradiation is stopped. describes the state.
  • the irradiation range control unit 19 controls the irradiation unit 13 (in the case of FIG. 7, the irradiation unit 13- 2), the distribution ratio to the route 14 may be increased.
  • the illuminance of the area AR-s can be increased, further shortening the time required for sterilization, etc. can do.
  • FIG. 8 is a flow chart for explaining the ultraviolet light irradiation method in the ultraviolet light irradiation system (302-305) described above.
  • This method is an irradiation method for an ultraviolet light irradiation system (302 to 305) that irradiates an irradiation target area AR with ultraviolet light, and operates as follows.
  • Step S01 The irradiation unit 13 irradiates the entire irradiation target area AR with ultraviolet light.
  • Step S02 It is determined whether or not an area AR-s that needs to be irradiated with the ultraviolet light has occurred in the irradiation target area AR.
  • Step S03 When the area AR-s is generated (“Yes” in step S02), the irradiation unit 13 irradiates the area AR-s with the ultraviolet light focused.
  • Step S04 Determine whether or not a certain period of time has elapsed for irradiating the area AR-s with ultraviolet light, or whether the amount of ultraviolet light focused on the area AR-s has exceeded a predetermined amount. do.
  • the process returns to step S01 to irradiate the entire irradiation target area AR with the ultraviolet light spread.
  • the process returns to step S03, and the irradiation unit 13 continues to focus and irradiate the area AR-s with the ultraviolet light. do.
  • Ultraviolet light source unit 12 Light distribution unit (equally branched) 12-11: Light distribution units 13, 13-1, . . . , 13-N: Irradiation unit 14: Direction (optical fiber) 16: Optical transmission line (optical fiber) 19: Irradiation range control unit 31: Sensor unit 41: Monitor unit 52: Solid core 52a: Region 53: Hole 53a: Hole group 53c: Hole 60: Cladding 300-305: Ultraviolet light irradiation system AR, AR1, AR2 , ..., ARN: irradiation target area (area to be irradiated with ultraviolet light) AR-s: Areas requiring sterilization, etc. AR- Europe: Areas not requiring sterilization, etc.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

Le but de la présente invention est de fournir un système de rayonnement de lumière ultraviolette, et un procédé de rayonnement associé, permettant d'effectuer de manière flexible une stérilisation, etc. dans une zone souhaitée dans une courte période de temps.　Ledit système de rayonnement de lumière ultraviolette comprend : une unité de source de lumière ultraviolette 11 qui génère une lumière ultraviolette ; une unité de rayonnement 13 qui rayonne une zone à irradier AR avec la lumière ultraviolette ; et une unité de commande de plage de rayonnement 19 qui modifie la plage de rayonnement de la lumière ultraviolette. De plus, dans un cas où une zone AR-s qui doit être irradiée avec la lumière ultraviolette est générée dans la zone AR à irradier, l'unité de commande de plage de rayonnement 19 amène l'unité de rayonnement 13 à rendre plus étroite la lumière ultraviolette afin d'irradier la zone AR-s, et dans d'autres cas, à étaler la lumière ultraviolette afin d'irradier la zone entière à irradier AR.
PCT/JP2021/041475 2021-11-11 2021-11-11 Système de rayonnement de lumière ultraviolette et procédé de rayonnement WO2023084669A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003175361A (ja) * 2001-12-12 2003-06-24 Gen Gijutsu Kenkyusho:Kk 硬化塗膜の形成方法
JP2008226140A (ja) * 2007-03-15 2008-09-25 Mazda Motor Corp 車両の運転支援装置
US20160228928A1 (en) * 2014-05-21 2016-08-11 Shenzhen China Star Optoelectronics Technology Co. Ltd. Method of cleaning substrate by ultraviolet rays with adjustable radiation energy
JP2018130131A (ja) * 2017-02-13 2018-08-23 エネフォレスト株式会社 室内殺菌装置
JP2020078479A (ja) * 2018-11-14 2020-05-28 サンエナジー株式会社 紫外線照射装置
CN111450280A (zh) * 2020-05-27 2020-07-28 梁旭东 台型紫外线杀菌装置

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Publication number Priority date Publication date Assignee Title
JP2003175361A (ja) * 2001-12-12 2003-06-24 Gen Gijutsu Kenkyusho:Kk 硬化塗膜の形成方法
JP2008226140A (ja) * 2007-03-15 2008-09-25 Mazda Motor Corp 車両の運転支援装置
US20160228928A1 (en) * 2014-05-21 2016-08-11 Shenzhen China Star Optoelectronics Technology Co. Ltd. Method of cleaning substrate by ultraviolet rays with adjustable radiation energy
JP2018130131A (ja) * 2017-02-13 2018-08-23 エネフォレスト株式会社 室内殺菌装置
JP2020078479A (ja) * 2018-11-14 2020-05-28 サンエナジー株式会社 紫外線照射装置
CN111450280A (zh) * 2020-05-27 2020-07-28 梁旭东 台型紫外线杀菌装置

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Title
"Infection prevention technology "Fivery" for COVID-19 and other infections", NTT NEWS RELEASE, 13 November 2020 (2020-11-13), XP009543181, Retrieved from the Internet <URL:https://www.ntt.co.jp/news2020/2011/201113b.html> *

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