CN112666725A

CN112666725A - Antifogging glasses

Info

Publication number: CN112666725A
Application number: CN202110028924.2A
Authority: CN
Inventors: 戴旭锋; 保金华; 陈浩
Original assignee: Wenzhou Medical University
Current assignee: Wenzhou Medical University
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-04-16

Abstract

An anti-fog glasses. The method is characterized in that: the lens is arranged in a hollow mode, a first cavity is formed in the lens, a heat conducting piece which is used for being in contact with a human body is arranged on the lens, the heat conducting piece is also arranged in a hollow mode, a second cavity is formed in the lens, and the first cavity is communicated with the second cavity and filled with transparent heat conducting liquid. Its advantage lies in, and the heat conduction spare contacts with the human body, can acquire human heat, and the heat conduction liquid is then through the mode of convection current, transmits the heat that the heat conduction spare obtained to the lens high efficiency to improve the lens temperature, reduce the temperature difference between human exhaust steam and the lens greatly, thereby effectively avoid or alleviate the problem that the lens hazed.

Description

Antifogging glasses

Technical Field

The invention relates to glasses, in particular to anti-fog glasses.

Background

The normal breathing or speaking of a person is accompanied by the discharge of a large amount of water vapor, and the temperature of the water vapor just discharged is almost the same as the body temperature of the person, and is about 37 ℃. If the water vapor meets the frame spectacle lens with lower temperature, liquefaction phenomenon can be generated; namely, the water vapor meets condensation and exists in the form of tiny water drops on the surface of the lens. The above condition is one of the main reasons for fogging of the frame lens in our daily life; especially when the ambient temperature is low and the wearer wears the mask at the same time. The fogging of the lens directly affects the vision and causes inconvenience for the wearer. The fogging phenomenon of lenses of medical workers is a problem to be solved urgently in 2020 during the epidemic period of new coronavirus. The antifogging agent/liquid is coated on the surface of the lens, so that the fogging of the lens can be reduced only temporarily; and after the lens is coated, the visual quality can be affected. In addition, the lens is also reported to be coated with an antifogging film, but the related technology is not mature, and the antifogging effect is not durable.

Disclosure of Invention

In order to overcome the defects of the background art, the invention provides anti-fog glasses.

The technical scheme adopted by the invention is as follows: an anti-fog glasses comprises a glasses frame, glasses legs, lenses and a nose support; the lens is hollow, a first cavity is formed in the lens, a heat conducting piece which is used for being in contact with a human body is arranged on the lens, the heat conducting piece is hollow, a second cavity is formed in the lens, and the first cavity is communicated with the second cavity and filled with transparent heat conducting liquid.

The heat conducting piece is a nose pad.

The heat conducting piece is made of metal silver.

The cross section of the first cavity is in the shape of a concave lens.

The cross section of the first chamber is in the shape of a convex lens.

The heat conducting liquid is benzene or carbon disulfide or diiodomethane.

The lens is integrally injection molded onto the heat conducting member.

And a sealing ring is arranged at the joint of the lens and the heat conducting piece.

The side edge of the lens is provided with a liquid injection hole and an exhaust hole which are communicated with the first cavity, and the first cavity is sealed by sealing glue after being filled with heat conduction liquid.

The invention has the beneficial effects that: scheme more than adopting, heat conduction spare and human contact can acquire human heat, and heat conduction liquid then passes through the mode of convection current, transmits the heat that heat conduction spare obtained to the lens high efficiency to improve the lens temperature, reduce the temperature difference between human exhaust steam and the lens greatly, thereby effectively avoid or alleviate the problem that the lens hazed.

Drawings

Fig. 1 is a schematic partial structure view of an anti-fog glasses according to an embodiment of the invention.

Fig. 2 is a schematic structural view of a lens and a nose pad according to an embodiment of the invention.

FIG. 3 is a cross-sectional view of a lens according to an embodiment of the invention.

FIG. 4 is a cross-sectional view of another embodiment of a lens of the invention.

Detailed Description

The embodiments of the invention will be further described with reference to the accompanying drawings in which:

as shown in the figures, the anti-fog glasses comprise a glasses frame 1, glasses legs 2, lenses 3 and a nose support 4.

The lens 3 is hollow, a first cavity 31 is formed inside the lens 3, a heat conducting piece which is used for being in contact with a human body is arranged on the lens 3, the heat conducting piece is hollow, a second cavity 41 is formed inside the heat conducting piece, and the first cavity 31 and the second cavity 41 are communicated with each other and filled with heat conducting liquid.

Wherein, the heat conduction piece is nose holds in the palm 4, and nose holds in the palm 4 and is the necessary structure of glasses, supports glasses with the contact of bridge of the nose when wearing, and it can keep contacting with the human body to can directly acquire human heat, and nose holds in the palm 4 and is close with 3 distances of lens, can guarantee quick heat conduction, reduces the heat and runs off, consequently adopts nose to hold in the palm 4 as the heat conduction piece and is the optimum choice, certainly, does not exclude here to adopt other extra additional accessories to come as the mode of heat conduction piece.

In order to ensure the heat transfer effect, the nose pad 4 is made of metal silver, because the heat conductivity coefficient of silver is the highest in metal materials, and the chemical property of the metal silver is relatively stable and does not react with the secretion of human skin.

The heat conducting liquid adopts the transparent liquid which has similar refractive index with the conventional resin lens and is colorless, such as benzene, carbon disulfide and diiodomethane, so that the normal visual effect is not influenced, the high-speed and high-efficiency geothermal transfer effect is ensured, and of course, the available colorless transparent liquid has a plurality of refractive index tables which can be consulted for selection.

The front and back walls of the lens 3 are of uniform thickness and have no diopter, but when the first chamber 31 has a cross section in the shape of a concave lens as shown in fig. 3, the lens can be filled with a heat-conducting liquid for correcting myopia; when the first chamber 31 has a cross-section in the shape of a convex lens as shown in fig. 4, filling with a heat-conducting liquid can be used to correct hyperopia or presbyopia.

The diopter of the specific refractive correction can be obtained by calculation according to the curvature of the front and back walls of the first chamber 31 and the refractive index of the heat-conducting liquid, and the specific formula is as follows: f = (n-1) (1/r1-1/r2), wherein n is the refractive index of the heat-conducting liquid, r1 is the radius of curvature of the front wall of the first cavity, and r2 is the radius of curvature of the rear wall of the first cavity.

Although it is an ideal formula, when the lens is not too thick, the difference between the result calculated by the formula and the real result is not large, and the thickness of the lens of the conventional spectacles is generally thinner, so that the lens with corresponding diopter can be obtained by directly adopting the formula, selecting the required heat-conducting liquid and controlling the curvature radius of the front wall and the rear wall.

Of course, the above formula is only suitable for thin lenses, if it is required to select a lens with a thicker wall, the lens thickness is also considered, and when the ametropia is higher, the heat-conducting liquid with a higher refractive index is preferably selected.

The lens 3 and the nose pad 4 can be manufactured by the following method:

1. the nose pad 4 is integrally formed by metal silver, and a gradually reduced thin conduit extends outwards;

2. a layer of sealing ring is coated outside the thin conduit of the nose support 4, and is sleeved by a sleeve made of the same material as the lens, and the sealing strip is pressed tightly to ensure sealing;

3. the lens 3 is integrally injected on the nose pad 4, and the sleeve on the nose pad 4 and the lens 3 are integrated.

By adopting the method, the first chamber is communicated with the second chamber, and the reliable sealing connection between the nose support 4 and the lens 3 is realized.

The first chamber 31 of the lens 3 and the second chamber 41 of the nosepiece 4 can be filled using the following method:

when 3 injection moulding of lens 3 the notes liquid hole 32 and the exhaust hole 33 of the first cavity 31 of intercommunication are reserved to 3 sides of lens, accomplish the back of moulding plastics when the lens, add heat-conducting liquid through the mode of pinhole injection, annotate liquid hole 32 and be used for annotating the liquid, exhaust hole 33 is used for annotating the exhaust of liquid in-process, after filling with heat-conducting liquid in first cavity 31, the rethread is sealed.

Because the thin conduit that the nose holds in the palm and is connected with the lens is thinner, in order to guarantee the notes liquid effect of second cavity 41 in the nose holds in the palm 4, can be before lens 3 and nose hold in the palm 4 mould plastics, through thin conduit earlier, add heat-conducting liquid in second cavity 41 with the mode of thin syringe needle injection, after second cavity 41 and thin conduit are filled with heat-conducting liquid, carry out the injection moulding with the lens again.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the invention has been described in terms of the above specific embodiments, the inventive concept is not limited thereto and any modification applying the inventive concept is intended to be included within the scope of the patent claims.

Claims

1. Anti-fog glasses comprise a glasses frame (1), glasses legs (2), lenses (3) and a nose support (4); the method is characterized in that: the lens (3) is arranged in a hollow mode, a first cavity (31) is formed in the lens, a heat conducting piece which is used for being in contact with a human body is arranged on the lens (3), the heat conducting piece is arranged in a hollow mode, a second cavity (41) is formed in the lens, and the first cavity (31) and the second cavity (41) are communicated with each other and filled with transparent heat conducting liquid.

2. The anti-fog eyewear of claim 1, wherein: the heat conducting piece is a nose pad (4).

3. The anti-fog eyewear of claim 1, wherein: the heat conducting piece is made of metal silver.

4. The anti-fog eyewear of claim 1, wherein: the cross section of the first chamber (31) is in the shape of a concave lens.

5. The anti-fog eyewear of claim 1, wherein: the cross section of the first chamber (31) is in the shape of a convex lens.

6. The anti-fog eyewear of claim 1, wherein: the heat conducting liquid is benzene or carbon disulfide or diiodomethane.

7. The anti-fog eyewear of claim 1, wherein: the lens (3) is integrally injected on the heat conducting piece.

8. The anti-fog eyewear of claim 1, wherein: and a sealing ring is arranged at the joint of the lens (3) and the heat conducting piece.

9. The anti-fog eyewear of claim 1, wherein: the side edge of the lens (3) is provided with a liquid injection hole (32) and an exhaust hole (33) which are communicated with the first chamber (31), and the first chamber (31) is sealed by sealing glue after being filled with heat-conducting liquid.