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WO2024222947A1 - Filtre auto-obscurcissant et casque de protection pour une protection de traitement au laser - Google Patents

Filtre auto-obscurcissant et casque de protection pour une protection de traitement au laser Download PDF

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Publication number
WO2024222947A1
WO2024222947A1 PCT/CN2024/090353 CN2024090353W WO2024222947A1 WO 2024222947 A1 WO2024222947 A1 WO 2024222947A1 CN 2024090353 W CN2024090353 W CN 2024090353W WO 2024222947 A1 WO2024222947 A1 WO 2024222947A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser
auto
liquid crystal
darkening filter
crystal panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/090353
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English (en)
Inventor
Ziying WU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tecmen Electronics Co Ltd
Original Assignee
Tecmen Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202320997046.XU external-priority patent/CN219737921U/zh
Priority claimed from CN202310484603.2A external-priority patent/CN116626927A/zh
Application filed by Tecmen Electronics Co Ltd filed Critical Tecmen Electronics Co Ltd
Publication of WO2024222947A1 publication Critical patent/WO2024222947A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/02—Goggles
    • A61F9/022—Use of special optical filters, e.g. multiple layers, filters for protection against laser light or light from nuclear explosions, screens with different filter properties on different parts of the screen; Rotating slit-discs
    • A61F9/023—Use of special optical filters, e.g. multiple layers, filters for protection against laser light or light from nuclear explosions, screens with different filter properties on different parts of the screen; Rotating slit-discs with variable transmission, e.g. photochromic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/04—Eye-masks ; Devices to be worn on the face, not intended for looking through; Eye-pads for sunbathing
    • A61F9/06—Masks, shields or hoods for welders
    • A61F9/065—Masks, shields or hoods for welders use of particular optical filters
    • A61F9/067—Masks, shields or hoods for welders use of particular optical filters with variable transmission

Definitions

  • the present application generally relates to an auto-darkening filter for laser processing and a protective helmet equipped with such an auto-darkening filter.
  • a hand-held laser welding device In comparison with a conventional hand-held welding device, a hand-held laser welding device requires to be held by only one hand of a user such that he/she can flexibly move the welding device. Besides, laser welding is more and more widely used in welding operations for the benefits that laser welding energy density is highly concentrated, resulting in an extremely rapid heating and cooling during welding and a smaller heat-affected zone; less welding stress and distortion; contactless processing, no external force on a welding part or the like.
  • welding laser light is incident on surfaces of two metallic parts to be welded such that a hot molten pool is generated locally and thus the surfaces of the two metallic parts could be welded together.
  • the incident welding laser light itself will be scattered at the surfaces of the metallic parts and the scattered laser light might burn eyes or naked skin of a welding operator.
  • the hot molten pool itself will generate rays harmful to human (including rays of visible or invisible spectrum) due to high temperature and heat.
  • the pair of laser protective glasses will avoid the scattered laser light directly entry into his or her eyes, his or her naked facial skin cannot be protected effectively such that the scattered laser light and the harmful rays caused by the hot molten pool will burn eyes and the face of the welding operator.
  • the pair of laser protective glasses conventionally has fixed transmittance only. Therefore, in different welding scenarios where different welding laser powers are required, the welding operator will have to respectively wear pairs of laser protective glasses with different transmittance to suitably protect him or her during a welding processing. This will result in a decrease in labor efficiency.
  • the welding operator inadvertently wears a pair of laser protective glasses with unsuitable transmittance, his or her eyes might be also damaged.
  • the pairs of laser protective glasses can be rarely used to avoid potential threat of the rays caused by the hot molten pool to the eyes.
  • the present application is mainly aimed at proposing a novel auto-darkening filter and a protective helmet equipped with the auto-darkening filter, for laser processing, especially laser welding protection.
  • an auto-darkening filter for laser processing protection which comprises:
  • the optical sensor being configured to generate an excitation signal when the optical sensor has detected strong light generated during laser welding
  • the sight window assembly including a laser protective sheet located on a side facing a strong light generating direction during laser welding and a liquid crystal panel located upstream or downstream of the laser protective sheet
  • the auto-darkening filter also comprises a control unit electrically coupled to the optical sensor, the control unit is configured to, upon receiving the excitation signal, switch the liquid crystal panel from an idle state to a dark state, and wherein the liquid crystal panel in its idle state has transmittance of visible light, far ultraviolet light and infrared light which are respectively higher than transmittance of visible light, far ultraviolet light and infrared light in the dark state.
  • the auto-darkening filter according to the present application provides protection not only against laser beams inadvertently scattered during laser welding but also against the strong light caused by laser welding, thus providing more full protection for eyes of a user.
  • the laser protective sheet has transmittance of laser light which is configured such that laser light, after passing through the laser protective sheet, is not detrimental to liquid crystal arrays of the liquid crystal panel.
  • the liquid crystal arrays might be burnt due to too much energy of laser light for processing (for example welding) if it is directly incident on the liquid crystal arrays. Therefore, the laser protective sheet is manufactured by a suitably chosen material and in a suitable manner such that even if some of laser light may pass through the laser protective sheet, its energy is not sufficient to burn the liquid crystal arrays and thus the liquid crystal arrays can be automatically darkened to protect eyes of a user against the passing laser light whose energy has been reduced.
  • the laser protective sheet is configured such that its transmittance of laser light energy at 1064 nm or 1070 nm wavelength is at least in the order of 10 -3 ⁇ 10 -6 . It should be understood by a person skilled in the art that terminology referring to the order for protection can consider respective National standards of the People's Republic of China.
  • the laser protective sheet is configured such that its transmittance of visible light can be at least 30%. In this way, even if the auto-darkening filter is in its idle state, a user can see through the auto-darkening filter to conveniently watch and modify a part that will undergo laser-processing (for example laser-welding) or can watch and align an aiming light spot suitably with a location of the part to be laser processed so as to avoid errors in laser processing.
  • laser-processing for example laser-welding
  • liquid crystal panel and the laser protective sheet are bonded to each other.
  • the auto-darkening filter further comprises a control panel by which transmittance of visible light of the liquid crystal panel in the dark state can be set as 13.9%, 5.18%, 1.93%, 0.72%, 0.27%, 0.1%, 0.037%, 0.0139%, 0.0052%, 0.0019%, 0.00072%or 0.00027%; transmittance of far ultraviolet light of the liquid crystal panel in the dark state can be set as 0.07%, 0.04%, 0.02%, 0.01%, 0.007%, 0.004%, 0.002%, 0.001%, 0.0007%, 0.0004%, 0.0002%or 0.0001%; and transmittance of infrared light of the liquid crystal panel in the dark state can be set as 9.0%, 5.0%, 2.5%, 1.5%, 1.3%, 1.0%, 0.8%, 0.6%, 0.5%, 0.4%or 0.3%.
  • the liquid crystal panel comprises a plurality of liquid crystal panels, and any number of ones of the plurality of liquid crystal panels can be selectively operated to be switched from the idle state to the dark state.
  • the plurality of liquid crystal panels can work in an arbitrarily-combined manner, the sight window assembly can be manufactured at lower costs. Therefore, the transmittance requirements can be met by selective-combination of the plurality of liquid crystal panels in the dark state.
  • the laser processing is laser welding.
  • the optical sensor is configured such that the excitation signal is generated depending on the optical sensor’s detection of strong light emitted from a hot molten pool during laser welding and/or laser beams reflected at a location of a part to be welded.
  • a protective helmet for laser processing protection comprises:
  • an auto-darkening filter as mentioned above and installed in the helmet housing, wherein a laser protective sheet of the auto-darkening filter is located distally relative to a liquid crystal panel of the auto-darkening filter.
  • the auto-darkening filter can be designed such that eyes of a user can be automatically and effectively protected in various laser welding scenarios where laser welding powers are different. Therefore, the eyes are prevented from being damaged due to the fact, which usually occurs in the prior art, that a pair of laser protective glasses with unsuitable transmittance is chosen from pairs of laser protective glasses with various transmittance and inadvertently worn by the user. According to the present application, the user's labor efficiency can be improved with improved safety of human eyes. Besides, since the laser protective sheet is in-built in the auto-darkening filter, the auto-darkening filter can be reliably connected to the welding helmet still in a conventional manner.
  • the laser protective sheet according to the present application is prevented from inadvertently falling off during its usage and thus from a protection failure.
  • the auto-darkening filter is designed such that its transmittance can be automatically modified depending on the occurrence of a hot molten pool and/or welding laser beams and can provide protection against the welding laser beams. In this way, harmful rays caused by the hot molten pool itself can be effectively blocked and thus their potential damage to human eyes can be eliminated
  • the auto-darkening filter according to the present application can further improve the protection safety of human eyes.
  • the auto-darkening filter according to the present application is installed in the protective helmet and an operator wears the protective helmet on his or her head during welding, the face of the operator can be effectively protected and thus harmful rays are prevented from burning the face of the operator.
  • Fig. 1 is a perspective view schematically illustrating a protective helmet according to an embodiment of the present application
  • Fig. 2 is an exploded and perspective view schematically illustrating an auto-darkening filter according to an embodiment of the present application
  • Fig. 3 is a systematic chart schematically illustrating the auto-darkening filter according to the embodiment of the present application.
  • Fig. 4 is a simplified view schematically illustrating a sight window assembly according to an embodiment of the present application, wherein for clarity only, a liquid crystal panel and a laser protective sheet of the sight window assembly are shown to be spaced from each other; and Fig. 5 is a simplified view schematically illustrating how components of a sight window assembly according to another embodiment of the present application are stacked over each other.
  • Fig. 1 schematically illustrates a protective helmet 10 according to an embodiment of the present application, which protective helmet is configured to include a helmet housing 100 and an auto-darkening filter 200 provided in the helmet housing 100.
  • the helmet housing 100 is configured to be connected to a headgear (which is hidden in an interior of the helmet housing 100 in this figure) via a knob feature 110.
  • the headgear is configured to be directly worn on a user’s head such that the helmet housing 100 can be secured relative to the head of the user.
  • the helmet housing 100 is formed such that it can at least partially cover the user’s face.
  • An opening is formed in a front portion of the helmet housing 100.
  • the auto-darkening filter 200 is installed at the opening by a not-shown frame on an inner side of an internal hollow space surrounded by the helmet housing 100.
  • a transparent protective sheet can be installed in the helmet housing 100 to prevent the auto-darkening filter 200 from contacting splashes and thus being roughened.
  • the protective helmet 10 is worn in place by an operator such that his or her face can be sufficiently covered or shielded by the protective helmet. Then, the operator aims a not-shown hand-held laser welding device at locations of parts to be welded. Thereafter, the operator activates the hand-held laser welding device such that the parts to be welded can be molten together under the action of laser light emitted from the hand-held laser welding device.
  • the protective helmet 10 according to the present application can be used such that the face and eyes of the operator can be prevented from being damaged not only by some laser light scattered at the parts to be welded by the emitting laser light but also by harmful rays caused by a hot molten pool generated during welding.
  • the auto-darkening filter 200 is designed such that it can be automatically switched from an idle state to a dark state as emission of the laser light or generation of the hot molten pool.
  • transmittance of visible light of the auto-darkening filter 200 is designed to be at least 30%such that eyes of the operator are able to observe through the auto-darkening filter 200 the locations to be welded, especially the locations where a light beam emitted from an aiming device of the hand-held laser welding device illuminates.
  • the transmittance of visible light of the auto-darkening filter 200 is designed to be selectively 13.9%, 5.18%, 1.93%, 0.72%, 0.27%, 0.1%, 0.037%, 0.0139%, 0.0052%, 0.0019%, 0.00072%, 0.00027%to ensure the safety of the operator’s eyes observing the locations to be welded.
  • Fig. 2 is a view schematically illustrating an auto-darkening filter 200 according to an embodiment of the present application.
  • the auto-darkening filter 200 comprises an installation frame.
  • the installation frame comprises a distal frame 201, which is located distally after the auto-darkening filter 200 is installed in the protective helmet 10, and a proximal fame 202 which is located proximally after the auto-darkening filter is installed in the protective helmet.
  • the distal frame 201 and the proximal frame 202 can be attached to each other. For instance, they can be attached to each other by a bonding agent and/or via mating features pluggable into each other (as shown, pins and receptacles receiving the same, or the like) .
  • the auto-darkening filter 200 comprises a control unit 206, a sight window assembly 230, an optical sensor 220, a photoelectric conversion element 210 and a battery 240.
  • the sight window assembly 230 comprises a liquid crystal panel 231 and a laser protective sheet 232.
  • the liquid crystal panel 231 is arranged proximally relative to the laser protective sheet 232. That is, after the auto-darkening filter 200 is installed in the protective helmet 10 in place and the protective helmet 10 is worn by a user, external light or rays enter the hollow interior of the helmet 10 only in such a way that the external light or rays pass first through the laser protective sheet 232 and then through the liquid crystal panel 231.
  • the control unit 206 can be powered by the battery 240 such as a button battery. Furthermore, the control unit 206 comprises a control circuit which is electrically coupled to the optical sensor 220, the photoelectric conversion element 210 and a liquid crystal drive circuit 231a for driving liquid crystal arrays of the liquid crystal panel 231.
  • Several apertures 207 are formed in the distal frame 201. According to an embodiment of the present application, four apertures 207 are for example formed, two of which are shown in Fig. 2 and two of which are hidden in Fig. 2. The apertures 207 are used for receiving the corresponding number of optical sensors 220.
  • the optical sensors 220 are configured to detect strong light spots generated at the locations to be welded by high-energy laser beams of welding laser light or strong light (for example infrared light component) emitted from a hot molten pool thus generated and/or laser beams reflected at the locations to be welded, and based on the detection, the optical sensors generate electrical signals supplied to the control unit 206.
  • the control unit 206 is configured to, after receiving the electrical signals, correspondingly activate the liquid crystal drive circuit 231a such that the transmittance of the liquid crystal panel 231 is changeable respectively due to energization of the liquid crystal arrays.
  • the photoelectric conversion element 210 is configured to receive and convert the strong light emitted from the hot molten pool into electrical energy which can be stored into the battery 240 for later driving the control unit 206.
  • an opening 204 is formed in the distal frame 201 and an opening 205 is formed in the proximal frame 202.
  • the two openings are aligned with each other when the installation frame of the auto-darkening filter 200 is assembled in place.
  • the sight window assembly 230 is received in the installation frame such that the majority of the area of the sight window assembly 230 can be exposed through the aligned openings 204 and 205.
  • An opening 203 is also formed in the distal frame 201 such that after the photoelectric conversion element 210 is received in the installation frame, the majority of the area of the photoelectric conversion element 210 can be exposed through the opening 203 to convert optical energy as received by the element into electrical energy.
  • the auto-darkening filter 200 also comprises a control panel 250.
  • control panel 250 can be located aside the sight window assembly 230.
  • control panel 250 is aligned with the photoelectric conversion element 210 or the opening 203 therefor in the installation frame assembled in place.
  • the control panel 250 is for example a touch panel by which a user can conveniently input instructions to set various parameters of the liquid crystal panel 231 via the control unit 206, for example to set SHADE (for instance the transmittance of the liquid crystal panel in the dark state) , response time (for instance the time of the liquid crystal panel switching from the idle state to the dark state) or the like.
  • SHADE for instance the transmittance of the liquid crystal panel in the dark state
  • response time for instance the time of the liquid crystal panel switching from the idle state to the dark state
  • the laser protective sheet 232 can comprise a substrate.
  • the substrate can be made of polycarbonate.
  • the laser protective sheet 232 can be manufactured in such a manner that degradation of energy is achieved by laser reflection or degradation of energy is achieved by laser absorption.
  • the substrate of the laser protective sheet 232 is plated with or coated with a laser beam reflection coating on its surface.
  • the surface of the substrate can be vapor-deposited with a film of zirconia (ZrO 2 ) and silicon dioxide (SiO 2 ) such that the majority of laser light energy incident on the laser protective sheet 232 can be reflected, and no laser light component or only laser light component at an energy level that is harmless to naked eyes or will be detrimental to the liquid crystal arrays of the liquid crystal panel 231 can pass through the substrate of the laser protective sheet 232.
  • the substrate of the laser protective sheet 232 during its manufacturing can be doped with an absorber enabling laser beams to be scattered such that laser light energy can be degraded.
  • the absorber can be a 532-type absorber, an IR1064-type absorber, or an IR10600-type absorber or the like. It can be understood by a person skilled in the art that the laser protective sheet 232 can be manufactured in both of the manners as mentioned above.
  • the laser protective sheet 232 is manufactured so that its level of protection against laser radiation for example enables the transmittance of laser light energy at 1064 nm or 1070 nm wavelength to be at least in the order of 10 -3 ⁇ 10 -6 . It is understood that the laser protective sheet 232 of the present application is configured such that the transmittance of laser light energy at other wavelengths can be also in the order of 10 -3 ⁇ 10 - 6 . Furthermore, the laser protective sheet 232 is manufactured such that its transmittance of visible light can be at least 30%. In a preferred embodiment, the laser protective sheet 232 is manufactured such that its transmittance of visible light can guarantee that in the idle state of the auto-darkening filter 200 a user can watch an aiming light spot of the hand-held laser welding device.
  • the reference numeral “L1” and the solid arrow represent laser beams scattered at a part to be welded during laser welding
  • the reference numeral “L2” and the dotted arrow represent other harmful rays generated at a hot molten pool during laser welding.
  • the laser beams L1 occurring during the laser welding is blocked by the laser protective sheet 232 such that eyes of an operator can be reliably protected.
  • the laser protective sheet 232’s transmittance of visible light cannot absolutely block the other harmful rays L2 (mainly the harmful rays of visible spectrum) generated during laser welding. Therefore, in the auto-darkening filter of the present application, the other harmful rays L2 can be blocked by the liquid crystal panel 231 in the dark state. In this way, the auto-darkening filter 200 of the present application can provide more comprehensive protection for the operator who will perform welding. Especially, in case that the operator who will perform welding has worn the protective helmet 10 of the present application, he or she can conveniently watch the outside through the auto-darkening filter 200 in the idle state when laser welding has not been performed.
  • the auto-darkening filter 200 especially its liquid crystal panel 231 can be automatically switched to the dark state such that the auto-darkening filter 200 can provide protection against both of the laser beams L1 and the other harmful rays L2.
  • the helmet housing 100 of the protective helmet 10 can also provide protection for the face or head of the operator performing welding against harmful rays.
  • the liquid crystal panel 231 of the auto-darkening filter 200 in its dark state has average transmittance of visible light which can be 13.9%, 5.18%, 1.93%, 0.72%, 0.27%, 0.1%, 0.037%, 0.0139%, 0.0052%, 0.0019%, 0.00072%, 0.00027%; average transmittance of far ultraviolet light which can be 0.07%, 0.04%, 0.02%, 0.01%, 0.007%, 0.004%, 0.002%, 0.001%, 0.0007%, 0.0004%, 0.0002%, 0.0001%; and average transmittance of infrared light which can be 9.0%, 5.0%, 2.5%, 1.5%, 1.3%, 1.0%, 0.8%, 0.6%, 0.5%, 0.4%, 0.3%. These parameters are selectively settable by the control panel 250.
  • the liquid crystal panel 231 in order to ensure that the above requirements can be met by the liquid crystal panel 231, the liquid crystal panel 231 can be a single piece of liquid crystal panel, or a combination of two or more liquid crystal panels.
  • the combination of liquid crystal panels can be driven by the liquid crystal drive circuit 231a such that one, two or any number of liquid crystal panels in the combination of the liquid crystal panels can selectively work and thus the transmittance as mentioned above can be achieved in the dark state.
  • the transmittance of a single liquid crystal panel in the combination of the liquid crystal panels can be also adjusted as required. In this way, according to the present application, the transmittance as mentioned above can be achieved by a selectively-combined-operation of the liquid crystal panels whose parameter requirements are low and whose manufacturing costs are low. Therefore, the technical solutions of the present application can be implemented at lower costs.
  • the liquid crystal panel 231 is arranged downstream of the laser protective sheet 232
  • the liquid crystal panel 231 can be arranged upstream of the laser protective sheet 232 in an alternative embodiment as shown by Fig. 5.
  • the term relating to “upstream” or “downstream” means that for example the object that the laser beams L1 or the harmful rays L2 first reach is the upstream object and the object that the laser beams L1 or the harmful rays L2 later reach is the downstream object.
  • arranging the laser protective sheet 232 upstream of the liquid crystal panel 231 in the auto-darkening filter can also have sufficient protection against laser welding (for example when laser beams are not directly incident on the auto-darkening filter) .
  • the liquid crystal panel 231 and the laser protective sheet 232 can be bonded to each other in the sight window assembly 230, for example they can be bonded to each other in a face-to-face manner. They can be bonded to each other by static electricity or by an adhesive such as a water-soluble or optical adhesive to ensure firm bonding.

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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laser Beam Processing (AREA)

Abstract

Un filtre auto-obscurcissant (200) pour une protection de traitement au laser comprend : un cadre d'installation ; et un ensemble fenêtre de visée (230) et un capteur optique (220) tous deux installés dans le cadre d'installation, le capteur optique (220) étant conçu pour générer un signal d'excitation lorsque le capteur optique (220) a détecté une forte lumière générée pendant le soudage laser, l'ensemble fenêtre de visée (230) comprenant une feuille de protection laser (232) située sur un côté faisant face à une direction de génération de lumière forte pendant le soudage laser et un écran à cristaux liquides (231) situé en amont ou en aval de la feuille de protection laser (232), le filtre auto-obscurcissant (200) comprenant également une unité de commande (206) couplée électriquement au capteur optique (220), l'unité de commande (231) étant configurée pour, lors de la réception du signal d'excitation, commuter l'écran à cristaux liquides (231) d'un état de repos à un état sombre, et l'écran à cristaux liquides (231) dans son état de repos ayant une transmittance de la lumière visible, de la lumière ultraviolette lointaine et de la lumière infrarouge qui sont respectivement supérieures à la transmittance de la lumière visible, de la lumière ultraviolette lointaine et de la lumière infrarouge dans l'état sombre. L'invention concerne également un casque de protection (10) équipé dudit filtre auto-obscurcissant (200).
PCT/CN2024/090353 2023-04-27 2024-04-28 Filtre auto-obscurcissant et casque de protection pour une protection de traitement au laser Pending WO2024222947A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202320997046.XU CN219737921U (zh) 2023-04-27 2023-04-27 用于激光加工防护的自动变光过滤器以及防护面罩
CN202310484603.2A CN116626927A (zh) 2023-04-27 2023-04-27 用于激光加工防护的自动变光过滤器以及防护面罩
CN202320997046.X 2023-04-27
CN202310484603.2 2023-04-27

Publications (1)

Publication Number Publication Date
WO2024222947A1 true WO2024222947A1 (fr) 2024-10-31

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PCT/CN2024/090353 Pending WO2024222947A1 (fr) 2023-04-27 2024-04-28 Filtre auto-obscurcissant et casque de protection pour une protection de traitement au laser

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US20040190106A1 (en) * 2003-03-19 2004-09-30 Gpt Glendale, Inc. Eye protection methods and apparatus
CN104434394A (zh) * 2013-08-05 2015-03-25 奥普特雷尔有限公司 面部防护装置
CN104854485A (zh) * 2012-12-13 2015-08-19 3M创新有限公司 弯曲的自动变暗滤光器
CN105982785A (zh) * 2015-03-18 2016-10-05 泰克曼(南京)电子有限公司 无线投影式焊接面罩及配备其的焊接机
CN107209363A (zh) * 2015-02-06 2017-09-26 3M创新有限公司 自动变暗滤光器设备和方法
CN116626927A (zh) * 2023-04-27 2023-08-22 泰克曼(南京)安全防护设备有限公司 用于激光加工防护的自动变光过滤器以及防护面罩
CN219737921U (zh) * 2023-04-27 2023-09-22 泰克曼(南京)安全防护设备有限公司 用于激光加工防护的自动变光过滤器以及防护面罩

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040190106A1 (en) * 2003-03-19 2004-09-30 Gpt Glendale, Inc. Eye protection methods and apparatus
CN104854485A (zh) * 2012-12-13 2015-08-19 3M创新有限公司 弯曲的自动变暗滤光器
CN104434394A (zh) * 2013-08-05 2015-03-25 奥普特雷尔有限公司 面部防护装置
CN107209363A (zh) * 2015-02-06 2017-09-26 3M创新有限公司 自动变暗滤光器设备和方法
CN105982785A (zh) * 2015-03-18 2016-10-05 泰克曼(南京)电子有限公司 无线投影式焊接面罩及配备其的焊接机
CN116626927A (zh) * 2023-04-27 2023-08-22 泰克曼(南京)安全防护设备有限公司 用于激光加工防护的自动变光过滤器以及防护面罩
CN219737921U (zh) * 2023-04-27 2023-09-22 泰克曼(南京)安全防护设备有限公司 用于激光加工防护的自动变光过滤器以及防护面罩

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