CN111273461A - A defogging device and medical goggles for medical goggles - Google Patents
A defogging device and medical goggles for medical goggles Download PDFInfo
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- CN111273461A CN111273461A CN202010220812.2A CN202010220812A CN111273461A CN 111273461 A CN111273461 A CN 111273461A CN 202010220812 A CN202010220812 A CN 202010220812A CN 111273461 A CN111273461 A CN 111273461A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 33
- 239000012528 membrane Substances 0.000 claims abstract description 4
- 239000010408 film Substances 0.000 claims description 52
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000013039 cover film Substances 0.000 claims description 12
- 238000002834 transmittance Methods 0.000 claims description 5
- 229920002799 BoPET Polymers 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims 2
- 230000001681 protective effect Effects 0.000 abstract description 26
- 239000011521 glass Substances 0.000 abstract description 22
- 229910002804 graphite Inorganic materials 0.000 abstract description 12
- 239000010439 graphite Substances 0.000 abstract description 12
- -1 graphite alkene Chemical class 0.000 abstract description 11
- 230000005389 magnetism Effects 0.000 abstract description 5
- 210000002469 basement membrane Anatomy 0.000 abstract description 3
- 210000004379 membrane Anatomy 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000005336 safety glass Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C11/00—Non-optical adjuncts; Attachment thereof
- G02C11/08—Anti-misting means, e.g. ventilating, heating; Wipers
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C11/00—Non-optical adjuncts; Attachment thereof
- G02C11/12—Side shields for protection of the eyes
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/16—Shades; shields; Obturators, e.g. with pinhole, with slot
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/145—Carbon only, e.g. carbon black, graphite
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Ophthalmology & Optometry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Eyeglasses (AREA)
Abstract
The invention belongs to the field of medical machinery, and particularly relates to a defogging device for medical protective glasses and the medical protective glasses. The defogging device comprises a bottom film, a graphene transparent conductive film, a covering film, a magnetic attraction hole, a waterproof ring, a free end, a high-temperature protection module, a power supply connecting wire and a fastener), a USB power supply interface and a mobile power supply. The transparent conducting film of graphite alkene is pasted to the basement membrane, has the free end on the transparent conducting film of graphite alkene, has magnetism to inhale the hole on the free end, the welding has waterproof circle on the magnetism inhales the hole, as the electrode, has the one deck to cover the membrane on the transparent conducting film of graphite alkene, high temperature protection module and one of them electrode connection, with power connecting wire, USB power source and portable power source constitute a complete circuit, the fastener is used for the fixed power source connecting wire, prevents that the mistake from dragging the power cord and leading to the outage. The medical protective glasses demisting device is high in demisting efficiency, high in adaptability, safe and reliable.
Description
Technical Field
The invention belongs to the field of medical machinery, and particularly relates to a defogging device for medical protective glasses and the medical protective glasses.
Background
The fogging principle of eyeglasses is mainly caused by a liquefaction of ambient water vapor generated by the hot gas of thousands encountering the cooler lens, also known as condensation. From the principle point of view, the fogging phenomenon should satisfy the following conditions: firstly, water vapor exists around the lens; secondly, the temperature of the lens is different from the ambient temperature, and generally the temperature is lower than the ambient temperature, so that the vapor pressure of the water vapor contacting with the lens is lower, and the condensation phenomenon is generated. The lens defogging method is mainly used in several ways: (1) mechanically removing mist: a mechanical accessory is added to the protective glasses to scrape off water drops, but the weight is heavy and unrealistic; (2) destroying the conditions for mist formation; a. reducing the temperature difference: the glasses need to be placed in a new, possibly foggy environment, so that the temperature of the lenses is consistent with the ambient temperature or higher than the temperature of the air; b. avoiding the steam environment completely: even if the temperature difference exists, the breath is held and the air enters an environment with zero air humidity and does not fog. (3) The form of water beads on the lens is damaged, and the vision interference is reduced; (4) electric heating demisting mode: what adopt at present usually is resistance wire heating technology, utilizes metal alloy resistance wire, carbon fiber, graphite fiber silk to bury in advance in the thousand picture frames, utilizes the heat that produces when the circular telegram to make the lens intensification, make the lens temperature rise to reach unanimous with ambient temperature fast, prevents condensing of moisture for the drop of water flash evaporation that has condensed, thereby reach antifog, defogging effect.
From the existing medical protective glasses technology, the Chinese utility model applies for 'a medical protective glasses' (application number: CN201720044956.0, published: 2017-10-27), which comprises a body, a baffle, a glass frame, a glass lens and the like, and for the protective glasses, a chemical liquid antifogging method, namely spraying a layer of liquid antifogging agent with a mirror surface coating is widely used at present. However, this method has poor antifogging effect and short duration. Another Chinese utility model 'a device for preventing atomization of helmet goggles' (application number: 201520672896.8, published: 2015-08-31) comprises a helmet and goggles, wherein a defogging effect is realized by heating resistance wires arranged in the goggles.
To sum up, the main problem that medical goggles defogging exists at present has: (1) the common medical protective glasses do not have the defogging function, and a defogging agent is required to be additionally used to achieve the defogging effect; (2) because the common resistance wires are heavy and opaque, the resistance wires can only be placed in a spectacle frame, and the lenses are slowly heated by utilizing the heat conduction effect, so that the defects of uneven heating, slow diffusion and the like are caused; (3) because the resistance wire is arranged in the spectacle frame, the existing common medical protective spectacles cannot be used after being installed and adapted to various medical spectacles; (4) the resistance wire heating has relatively low safety due to uneven heating, slow diffusion and the like.
Disclosure of Invention
The invention aims to provide a defogging device for medical protective glasses, which is high in defogging efficiency, high in adaptability, safe and reliable.
The technical solution for realizing the purpose of the invention is as follows: a defogging device for medical goggles comprises a heating membrane containing a graphene transparent conductive film, a power supply connecting wire, a USB power supply interface and a mobile power supply;
electrodes are arranged at two ends of the graphene transparent conductive film and are connected with a USB power interface through a power connecting wire, the USB power interface is connected with a mobile power supply to form a complete circuit, and the graphene transparent conductive film is heated so as to be demisted.
Further, the heating film further comprises a bottom film and a cover film, the transparent graphene conductive film is arranged on the bottom film, and the cover film is arranged above the transparent graphene conductive film.
Further, the bottom film and the cover film are made of PET films.
Furthermore, be equipped with two free ends on the graphite alkene film, be equipped with two magnetism on one free end and inhale the hole, inhale and be equipped with waterproof circle on the hole, waterproof circle passes through soldering tin and is connected with the graphite alkene film to as the electrode.
Furthermore, the device also comprises a high-temperature protection module, wherein one end of the high-temperature protection module is connected with one electrode, and the other end of the high-temperature protection module is connected with a power supply connecting wire.
Furthermore, the high-temperature protection module is a temperature control switch, has two pins and is connected in series in the circuit, and the upper limit temperature is 40-45 ℃.
Furthermore, the safety glasses further comprise a fastener, wherein one end of the fastener is used for fixing the power supply connecting wire, and the other end of the fastener is used for being fixed on the glasses frame or the binding belt of the safety glasses according to the use requirement and used for fixing the power supply connecting wire.
Further, the fastener is a magic tape.
Further, the light transmittance of the transparent graphene conductive film is greater than 85%, and the surface resistivity is 100-1000 omega/m2(ii) a The mobile power supply is a mobile phone charger, and the output voltage is 4.7-5.2V.
A medical protective glasses comprises the defogging device, and a heating film of the defogging device is attached to the corresponding position of the protective glasses.
Compared with the prior art, the invention has the remarkable advantages that:
(1) defogging is efficient: the transparent conducting layer that graphite alkene transparent conducting film formed sheet resistance low, the transmittance is high makes it generate heat the time longer more even and temperature stable, and defogging effect is good efficient.
(2) The adaptability is high: the manufacturing cost of the device and the learning cost of a user are both low; as a post-assembling device, the protective glasses can be adapted to protective glasses with different specifications on the market, and can be randomly stuck on the positions of the lenses according to personal requirements;
(3) safe and reliable: the graphene transparent conductive film of the defogging device is a very common material which is very stable at normal temperature in terms of the chemical property of graphene; the power supply voltage of the device is also below the human body safety voltage, and the like; the defogging device is also provided with the high-temperature protection module, so that the safety of the defogging device is further improved.
Drawings
Fig. 1 is a general structural schematic diagram of a medical goggles defogging device of the invention.
FIG. 2 is a side-cut view of the heating film of the defogging device for medical goggles according to the present invention.
FIG. 3 is a schematic view of the interior of a heating diaphragm of the defogging device for medical goggles according to the present invention.
Description of reference numerals:
the device comprises a base film 1, a graphene transparent conductive film 2, a cover film 3, a magnetic attraction hole 4, a waterproof ring 5, a free end 6, a high-temperature protection module 7, a power supply connecting wire 8, a fastener 9, a USB power supply interface 10 and a mobile power supply 11.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
As shown in fig. 1, the medical goggles defogging device of the invention comprises a bottom film 1, a graphene transparent conductive film 2, a cover film 3, a magnetic attraction hole 4, a waterproof ring 5, a free end 6, a high-temperature protection module 7, a power supply connecting wire 8, a fastener 9, a USB power supply interface 10 and a mobile power supply 11.
The concrete structure is as follows:
the graphene transparent conductive film is adhered to the bottom film 1, a free end 6 is arranged on the graphene transparent conductive film 2, a magnetic attraction hole 4 is formed in the free end 6, and a waterproof ring 5 is welded on the magnetic attraction hole 4 and serves as an electrode. A layer of cover film 3 is arranged on the graphene transparent conductive film 2. The high-temperature protection module 7 is connected with one of the electrodes, forms a complete circuit with the power connecting wire 8, the USB power interface 10 and the mobile power supply 11, and one end of the fastener 9 is fixed with the power connecting wire 8 while the other end is fixed on a spectacle frame or a binding band of the protective spectacles according to use requirements.
As shown in fig. 2, a graphene transparent conductive film 2 is disposed on the bottom film 1, and a cover film 3 is disposed above the graphene transparent conductive film 2.
The bottom film 1 and the cover film 3 are PET films, are transparent colorless protective films and are convenient to attach to lenses.
The light transmittance of the transparent graphene conductive film 2 is greater than 85%, and the surface resistivity is 100-1000 omega/m 2.
As shown in fig. 3, a free end is arranged on the graphene film 2, a magnetic attraction hole 4 is arranged on the free end 6, two magnetic attraction holes 4 are arranged on one free end 6, a waterproof ring 5 is arranged on the magnetic attraction hole 4, and the waterproof ring is connected with the graphene film through soldering tin and serves as an electrode;
the high-temperature protection module 7 is a temperature control switch, has two pins, is connected in series in a circuit, and has an upper limit temperature of 40-45 ℃.
The fastening piece 9 is a magic tape.
The mobile power supply 11 is a common mobile phone charger, and the output voltage is 4.7-5.2V.
When medical personnel operate under the secondary protection, the body temperature of a human body is higher than the indoor temperature, and the humidity of the inner cavity is higher, so that the protective goggles are easy to generate fog. Before the user wears the goggles, generally with basement membrane 1, the diaphragm that generates heat is pasted in goggles lens top or other positions that do not shelter from the sight with covering membrane 3 component ground to graphite alkene transparent conductive film 2, because graphite alkene transparent conductive film's transparency is very high, can not shelter from user's sight basically, basement membrane 1 pastes graphite alkene transparent conductive film 2, there is free end 6 on the graphite alkene transparent conductive film 2, there is magnetism to inhale hole 4 on the free end 6, the welding has waterproof circle 5 on the magnetism is inhaled hole 4, as the electrode. A cover film 3 is arranged on the transparent graphene conductive film 2. High temperature protection module 7 is connected with one of them electrode, with power connecting wire 8, USB power source 10 and portable power source 11 constitute a complete circuit, and fastener 9 is used for fixed power connecting wire 8, prevents that the mistake from tearing the power cord and leading to the outage. After the heating diaphragm is heated, the temperature of the inner protective lens and the outer protective lens of the protective lens rises, and water drops are prevented from condensing on the lenses.
The high temperature protection module 7 is a temperature control device using a bimetallic strip as a temperature sensing assembly, when the device normally works, the bimetallic strip is in a free state, the contact belongs to a closed state, when the temperature rises to an upper limit temperature value, the bimetallic assembly is heated to generate internal stress to rapidly act, the contact is opened, and a circuit is cut off, so that the thermal protection effect is achieved. When the temperature is reduced to the reset temperature, the contact is automatically closed, and the normal working state is recovered.
The medical protective glasses antifogging device has the following advantages and causes:
1. defogging is efficient: the medical protective goggles defogging device has excellent electric conduction and optical performance due to the special arrangement mode of the carbon atoms in the graphene. The special structure of the heat-conducting material also enables the heat-conducting material to have good heat-conducting property. This project adopts the transparent conducting layer that the graphite alkene transparent conducting film of electric heat formula forms sheet resistance low, the transmittance is high, makes it generate heat the time longer more even and temperature stability, and defogging effect is effectual efficient.
2. The adaptability is high:
1) the film coating area can be freely regulated and controlled, the device can be adapted to protective glasses with different product specifications on the market, and meanwhile, the use and study cost of a user is almost zero, so that the device has the advantages of being ready to use and simple and convenient to operate;
2) the heating sheet and other parts have low cost, can be made into consumable materials, are pasted and installed, and can be randomly replaced by individuals;
3) the lens can be used as an accessory device after being installed, medical staff can still install the lens after the lens is fogged after entering a ward area, and the lens can achieve the same defogging effect, so that the lens is very convenient to use.
3. Safe and reliable:
1) graphene is a carbon material, and carbon is the most common material used in daily life and has no harm to human bodies.
2) From the chemical activity perspective, except for some samples with high specific edge content, graphene is very stable, and is difficult to react at normal temperature, so that the graphene is safe from the perspective.
3) The power supply voltage of the medical protective glasses defogging device is at the safe voltage of the human body, so that the electricity safety is not considered;
4) the graphene heating film can emit infrared rays, and can achieve the additional effects of eliminating eye fatigue and the like.
Claims (10)
1. A defogging device for medical goggles is characterized by comprising a heating membrane containing a graphene transparent conductive film (2), a power supply connecting wire (8), a USB power supply interface (10) and a mobile power supply (11);
electrodes are arranged at two ends of the graphene transparent conductive film (2), the electrodes are connected with a USB power supply interface (10) through a power supply connecting wire (8), the USB power supply interface (10) is connected with a mobile power supply (11), a complete circuit is formed, the graphene transparent conductive film (2) is heated, and accordingly demisting is achieved.
2. The defogging device according to claim 1, wherein the heating film further comprises a bottom film (1) and a cover film (3), the graphene transparent conductive film (2) is arranged on the bottom film (1), and the cover film (3) is arranged above the graphene transparent conductive film (2).
3. A defogging device according to claim 2, wherein the bottom film (1) and the cover film (3) are made of PET film.
4. A defogging device as recited in claim 1, wherein two free ends (6) are provided on the graphene film (2), two magnetic absorption holes (4) are provided on the one free end (6), and a waterproof ring (5) is provided on the magnetic absorption holes (4), and the waterproof ring is connected with the graphene film (2) through soldering tin and is used as an electrode.
5. A defogging device according to claim 4, characterized by further comprising a high temperature protection module (7), wherein one end of the high temperature protection module (7) is connected with one electrode, and the other end is connected with a power supply connecting wire (8).
6. A defogging device according to claim 5, wherein the high temperature protection module (7) is a temperature controlled switch having two pins connected in series in a circuit with an upper temperature limit of 40-45 ℃.
7. A defogging device as recited in claim 1, further comprising a fastening member (9), wherein one end of the fastening member (9) is fixed with the power connecting wire (8), and the other end is fixed on the frame or the binding band of the goggles for fixing the power connecting wire (8).
8. Demisting device according to claim 7, characterized in that the fastening element (9) is a velcro tape.
9. The defogging device as claimed in claim 1, wherein the light transmittance of the graphene transparent conductive film (2) is more than 85%, and the surface resistivity is 100-1000 Ω/m2(ii) a The mobile power supply (11) is a mobile phone charger, and the output voltage is 4.7-5.2V.
10. Medical goggles comprising a defogging device according to any one of claims 1 to 8, wherein the heating film of the defogging device is attached to the corresponding position of the goggles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010220812.2A CN111273461A (en) | 2020-03-26 | 2020-03-26 | A defogging device and medical goggles for medical goggles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010220812.2A CN111273461A (en) | 2020-03-26 | 2020-03-26 | A defogging device and medical goggles for medical goggles |
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| Publication Number | Publication Date |
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| CN111273461A true CN111273461A (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010220812.2A Pending CN111273461A (en) | 2020-03-26 | 2020-03-26 | A defogging device and medical goggles for medical goggles |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11590027B2 (en) | 2019-09-09 | 2023-02-28 | Gateway Safety, Inc. | Metal-detectable lens assemblies and protective eyewear including same |
| US11925582B2 (en) | 2019-09-09 | 2024-03-12 | Gateway Safety, Inc. | Metal-detectable lens assemblies and protective eyewear including same |
-
2020
- 2020-03-26 CN CN202010220812.2A patent/CN111273461A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11590027B2 (en) | 2019-09-09 | 2023-02-28 | Gateway Safety, Inc. | Metal-detectable lens assemblies and protective eyewear including same |
| US11690762B2 (en) | 2019-09-09 | 2023-07-04 | Gateway Safety, Inc. | Metal-detectable lens assemblies and protective eyewear including same |
| US11925582B2 (en) | 2019-09-09 | 2024-03-12 | Gateway Safety, Inc. | Metal-detectable lens assemblies and protective eyewear including same |
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