CN215375989U

CN215375989U - Antifog sunglasses lens

Info

Publication number: CN215375989U
Application number: CN202120868389.7U
Authority: CN
Inventors: 肖泽渝; 黄惠峰; 谢飞; 黄久清; 唐统添
Original assignee: Crystal Star Optical Materials Tech Co ltd
Current assignee: Crystal Star Optical Materials Tech Co ltd
Priority date: 2021-04-24
Filing date: 2021-04-24
Publication date: 2021-12-31
Anticipated expiration: 2031-04-24

Abstract

The application relates to the field of spectacle lenses, in particular to an anti-fog sunglasses lens, which comprises a polaroid serving as a sunglasses lens main body and an anti-fog layer used for preventing water mist from condensing, wherein the anti-fog layer is fixed on the polaroid in a pasting mode. When the sunglass lens is used, when air with water vapor flows to the surface of the anti-fog layer, the anti-fog layer can prevent water mist from condensing, so that the sunglass lens has an anti-fog effect. The antifogging layer is adhered to the polarizer in an adhering mode, so that the antifogging effect cannot be weakened when the antifogging layer is continuously prolonged or erased along with the use time, and the durability of the antifogging function of the sunglass lens is improved.

Description

Antifog sunglasses lens

Technical Field

The application relates to the field of spectacle lenses, in particular to an anti-fog sunglass lens.

Background

Sunglasses, also known as sun lenses, are glasses that are suitable for being worn in outdoor shading. When outdoor sunlight is particularly intense, sunglasses are required to block the sunlight to reduce the irritation of the strong light to the glasses, thereby reducing the fatigue of the eyes. Due to some special reasons, after people wear the mask and wear the sunglasses, the mask shields the nose and mouth of people, so that air with water vapor exhaled from the nose flows to the inner surface of the sunglasses through the nose support part of the mask, water mist is condensed on the inner surface of the sunglasses, and great influence is caused on the use experience of people.

In order to solve the problems, in the use process of sunglasses, a layer of spray with hydrophobicity is often sprayed on the inner surface of the sunglasses to reduce the condensation of water vapor on the eyeglasses, so that the problem of water mist condensation on the inner surface of the sunglasses is solved.

Aiming at the related technology, the inner surface of the sunglasses is subjected to antifogging treatment in a spraying mode, the problem that the antifogging effect is not durable exists due to the fact that the spraying mode is limited in adhesive force of the spraying mode attached to the inner surface of the sunglasses, and the spraying mode can be slowly lost along with continuous prolonging of the using time or erasing, so that the antifogging effect is weakened.

SUMMERY OF THE UTILITY MODEL

In order to improve the durability of the antifogging function of the sunglass lens, the application provides an antifogging sunglass lens.

The application provides an antifog sunglasses piece adopts following technical scheme:

an antifogging sunglasses lens comprises a polaroid serving as a sunglasses lens body and an antifogging layer used for preventing water mist from condensing, wherein the antifogging layer is fixed on the polaroid in a sticking mode.

By adopting the technical scheme, when the air with water vapor flows to the surface of the anti-fog layer in the using process of the sunglasses lens, the anti-fog layer can prevent water mist from condensing, so that the sunglasses lens has an anti-fog effect. The antifogging layer is adhered to the polarizer in an adhering mode, so that the antifogging effect cannot be weakened when the antifogging layer is continuously prolonged or erased along with the use time, and the durability of the antifogging function of the sunglass lens is improved.

Optionally, the polarizer and the antifogging layer are adhered through water-based glue.

By adopting the technical scheme, the polaroid and the antifogging layer are fixedly bonded through the water-based adhesive, and the bonded water-based adhesive is solidified into a solid through baking treatment, so that when the sunglass lens is bent under the action of external force, the water-based adhesive is not easy to diffuse in the direction far away from the pressed position. In the using process, the water-based adhesive can enhance the bending strength of the sunglasses, so that the sunglasses are not easy to deform.

Optionally, the antifogging layer is a film of cellulose diacetate.

By adopting the technical scheme, the cellulose diacetate film has good hydrophilicity, and the surface of the cellulose diacetate film is provided with a plurality of tiny holes. When the air flow who contains a large amount of vapor is to the cellulose diacetate surface, the vapor forms small drop of water on the surface of cellulose diacetate film, and small drop of water can be absorbed by the small hole on cellulose diacetate film surface to at the even and glossy water film in cellulose diacetate film surface formation surface, this kind of water film can not influence penetrating of light hardly, thereby plays antifog effect to sunglasses. The water absorbed in the cellulose diacetate film will slowly evaporate over time and can be reused.

Optionally, the thickness of the antifogging layer is between 0.2mm and 0.5 mm.

By adopting the technical scheme, the hydrophilic cellulose diacetate film has the problem of water absorption saturation in the antifogging process. When the thickness of the anti-fog layer is less than 0.2mm, the thickness of the anti-fog layer is relatively thin, and when a large amount of water vapor flows to the surface of the anti-fog layer and the cellulose diacetate film absorbs water to reach saturation, the anti-fog performance of the anti-fog layer is weakened; when the thickness of the anti-fog layer is more than 0.5mm, the thickness of the anti-fog layer is relatively thick, and the use experience of the sunglasses lens is influenced.

Optionally, the polarizer includes a first protective layer, a light-transmitting layer, a polarizing layer, and a second protective layer sequentially attached to the polarizer through an aqueous adhesive.

Through adopting above-mentioned technical scheme, it is fixed to glue through the waterborne between first protective layer, euphotic layer, polarizing layer and the second protective layer, and the waterborne has fine adhesion properties, and the waterborne is glued and can be solidified into the solid after the stoving processing, and whole polaroid becomes a whole to make the polaroid have very high intensity, the side cut processing and the processing of punching of the polaroid of being convenient for.

Optionally, the transparent layer is made of a dyed TAC film.

Through adopting above-mentioned technical scheme, dyeing TAC material can be according to customer user demand, dyes the euphotic layer to make coloured sunglasses, improve the impression effect of this sunglasses, richen the colour style of this sunglasses.

Optionally, the polarizing layer is made of a film made of PVA material.

By adopting the technical scheme, the transparency and the glossiness of the PVA film are superior to those of other films, and the PVA film can absorb light with a certain wavelength in sunlight, so that the stimulation of strong light to glasses is relieved while the light transmission effect is achieved, and the fatigue of eyes is relieved.

Optionally, the first protective layer and/or the second protective layer are made of a TAC film.

By adopting the technical scheme, because PVA is a water-soluble polymer, the film made of PVA is very easy to hydrolyze when encountering moisture, and the films made of TAC are respectively bonded on the two sides of the polarizing layer, so that the polarizing layer is protected.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when people wear sunglasses made of the sunglasses lens when wearing the mask, when air with water vapor exhaled from the nose support of the mask flows to the surface of the anti-fog layer, the anti-fog layer can prevent water mist from condensing, and therefore the sunglasses lens has an anti-fog effect. The antifogging layer is adhered to the polarizer in an adhering mode, so that the antifogging effect is not weakened when the antifogging layer is used for a long time or is erased, and the sunglass lens has lasting antifogging performance;

2. the polaroid and the antifogging layer are adhered by using the water-based adhesive, after the adhesion is finished, the water-based adhesive subjected to baking treatment can be solidified into a solid, when the sunglasses are bent by external force, the water-based adhesive is not easy to diffuse in the direction away from the pressed position, and the water-based adhesive can enhance the bending strength of the sunglasses so that the sunglasses are not easy to deform;

3. when the air with vapor exhaled from the mask nose pad flows to the surface of the anti-fog layer, the cellulose diacetate film has good hydrophilicity, and the surface of the cellulose diacetate film is provided with a plurality of tiny holes, so that the vapor is condensed on the surface of the cellulose diacetate film to form tiny water drops, and the tiny water drops can be absorbed by the tiny holes on the surface of the cellulose diacetate film, thereby forming a water film with uniform and smooth surface on the surface of the cellulose diacetate film. The water film hardly affects the penetration of light rays, so that the effect of preventing fog on the sunglasses is achieved, and water absorbed in the cellulose diacetate film can be slowly evaporated along with time, so that the water film can be repeatedly used.

Drawings

FIG. 1 is a schematic structural view of an internal layer structure of an anti-fog sunglass lens in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an internal layer structure of a polarizer in an embodiment of the present application.

Description of reference numerals: 1. a polarizer; 2. water-based glue; 3. an antifogging layer; 11. a first protective layer; 12. a light transmitting layer; 13. a polarizing layer; 14. and a second protective layer.

Detailed Description

The present application is described in further detail below with reference to figures 1 and 2.

The embodiment of the application discloses antifog sunglasses lens. Referring to fig. 1, an antifogging sunglasses lens includes a polarizer 1 and an antifogging layer 3, the polarizer 1 is used as a main body of the sunglasses lens, the antifogging layer 3 is used as an additional functional film to be adhered to one side of the polarizer 1 to play an antifogging role, so that the antifogging effect is not weakened when the antifogging layer 3 is continuously extended or erased along with the use time, and the durability of the antifogging function of the sunglasses lens is improved.

Wherein, the polaroid 1 and the antifogging layer 3 are bonded through the water-based adhesive 2, the water-based adhesive 2 is a flowing colloidal liquid before use, and the water-based adhesive 2 after bonding can be solidified into a solid after being dried. On one hand, after the polaroid 1 and the antifogging layer 3 are adhered together by using the water-based adhesive 2 and are baked, the polaroid 1 and the antifogging layer 3 form a whole through the water-based adhesive 2, so that the strength of the sunglass lens is enhanced, and the sunglass lens is not easy to deform in the using process; on the other hand, since the sunglasses are usually used with the sunglasses frame, the side of the sunglasses is required to be trimmed and holes are formed at the positions, close to the side edges, of the mirror surface of the sunglasses, so as to fix the sunglasses frame, the polarizer 1 and the antifogging layer 3 form a whole through the water-based adhesive 2, so that the situation of degumming between the polarizer 1 and the antifogging layer 3 cannot occur in the trimming or punching process of the sunglasses, and the yield of the sunglasses is affected.

It is to be noted that the antifogging layer 3 is a cellulose diacetate film having a thickness ranging from 0.2 to 0.5mm, and in the present embodiment, the thickness of the cellulose diacetate film may be set to 0.3 mm. The cellulose diacetate film is a chemical film, and the cellulose diacetate film has good hydrophilicity. The reason is that the surface of the cellulose diacetate has a plurality of tiny holes, when air containing a large amount of water vapor flows to the surface of the cellulose diacetate, the water vapor forms tiny water drops on the surface of the cellulose diacetate film, the tiny water drops can be absorbed by the tiny holes on the surface of the cellulose diacetate film, so that a water film with uniform and smooth surface is formed on the surface of the cellulose diacetate film, the water film hardly influences the penetration of light, and the effect of preventing fog on the sunglasses is achieved.

The cellulose diacetate film has a certain saturation degree in the process of absorbing water due to the hydrophilic characteristic of the cellulose diacetate film, and the thicker the cellulose diacetate film is, the higher the upper limit of the water absorption saturation degree of the cellulose diacetate film is. Conversely, the thinner the thickness of the cellulose diacetate film, the lower the upper limit of the water absorption saturation of the cellulose diacetate film. The water absorbed in the cellulose diacetate film will slowly evaporate over time and can be reused. In daily life, due to the fact that the mask is worn, air with water vapor flows to the anti-fog layer 3, the water vapor is condensed into water drops on the anti-fog layer 3 and is absorbed by the cellulose diacetate, and the water is volatilized from the anti-fog layer 3 through the evaporation effect of the water, so that dynamic balance is achieved.

Referring to fig. 2, the polarizer 1 is also a composite layer structure, and the polarizer 1 includes a first protective layer 11, a light-transmitting layer 12, a polarizing layer 13, and a second protective layer 14 sequentially attached to the water-based adhesive 2. The first protective layer 11 and the second protective layer 14 are made of TAC films, the light-transmitting layer 12 is made of dyed TAC films, and the polarization layer 13 is made of PVA films. The first protective layer 11 and the second protective layer 14 sandwich the light-transmitting layer 12 and the polarization layer 13 for protection, which is caused by the characteristics of the polarization layer 13 itself, PVA is a water-soluble polymer, a film made of PVA is very easy to hydrolyze when encountering moisture, and the polarization layer 13 is protected by respectively bonding films made of TAC material to both sides of the polarization layer 13. The PVA film has better transparency and glossiness than other films, and can absorb light with certain wavelength in sunlight, thereby playing a role in light transmission, reducing the stimulation of strong light to glasses and relieving the fatigue of eyes.

The implementation principle of the anti-fog sunglasses lens in the embodiment of the application is as follows: the antifogging layer 3 is adhered to one side of the polarizer 1, so that the antifogging effect cannot be weakened when the antifogging layer 3 is continuously prolonged or erased along with the service time, the durability of the antifogging function of the sunglass lens is improved, the antifogging layer 3 is a cellulose diacetate film with the thickness ranging from 0.2mm to 0.5mm, the surface of the cellulose diacetate film is provided with a plurality of tiny holes, when air containing a large amount of water vapor flows to the surface of the cellulose diacetate film, the water vapor forms tiny water drops on the surface of the cellulose diacetate film, the tiny water drops can be absorbed by the tiny holes on the surface of the cellulose diacetate film, a water film with an even and smooth surface is formed on the surface of the cellulose diacetate film, the water film hardly influences the penetration of light rays, and the antifogging effect on the sunglass lens is achieved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An antifogging sunglass lens characterized in that: the sun glasses comprise a polaroid (1) serving as a sun glasses body and an anti-fog layer (3) for preventing water mist from condensing, wherein the anti-fog layer (3) is fixed on the polaroid (1) in a sticking mode;

the polaroid (1) and the antifogging layer (3) are adhered through a water-based adhesive (2);

the antifogging layer (3) is a cellulose diacetate film, and the thickness of the antifogging layer (3) is 0.3 mm;

the polaroid (1) comprises a first protective layer (11), a light-transmitting layer (12), a polarizing layer (13) and a second protective layer (14) which are sequentially attached through a water-based adhesive (2);

the euphotic layer (12) is made of a film made of a dyed TAC material, the polarization layer (13) is made of a film made of a PVA material, and the first protective layer (11) and/or the second protective layer (14) are/is made of a film made of a TAC material.