Anti-fog lens structure made of PC (Polycarbonate) base material

Abstract

The utility model relates to a PC base material anti-fog lens structure which comprises a substrate, transition layers arranged on the two side faces of the substrate respectively, and a hydrophilic layer and an adhesive layer which are arranged on the side walls, deviating from each other, of the two transition layers respectively. A centrifugal film layer is arranged on one side wall, deviating from the substrate, of the adhesive layer; the thickness of the base plate ranges from 0.1 mm to 4 mm, the thickness of the hydrophilic layer ranges from 15 mm to 35 mm, and the thickness of the centrifugal film layer ranges from 0.08 mm to 0.2 mm. The anti-fogging anti-fog film is simple in overall structure, good in anti-fogging effect and excellent in abrasion resistance and bending resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lenses, in particular to a PC substrate anti-fog lens structure. Background Art

[0002] Compared with inorganic glass lenses, PC lenses have become increasingly popular among consumers due to their own advantages, such as light weight, good toughness, and low price. People who wear cycling glasses or helmets with goggles will find that when riding, the human forehead sweats a lot and heat is generated, which causes the lenses to fog up and a layer of fog to appear, resulting in blurred vision. It is also difficult to see clearly without wiping the glasses. Similarly, when wearing a mask, the exhaled hot air will also cause fog on the lenses, which brings great trouble to the user. The principle of fog droplet formation is that the lowering of temperature causes the saturated vapor pressure of water on the lens surface to be lower than the water vapor partial pressure in the air, causing the water vapor to condense into small water droplets. Therefore, in order to avoid the water fog effect on the lens surface affecting the use, we have specially proposed a PC-based anti-fog lens structure. Utility Model Content

[0003] The purpose of the present invention is to provide a PC substrate anti-fog lens structure in view of the deficiencies in the prior art, which can well solve the above-mentioned problems.

[0004] In order to achieve the above requirements, the technical solution adopted by the present invention to solve the technical problem is:

[0005] Provided is a PC-based anti-fog lens structure, comprising a substrate, transition layers respectively provided on both sides of the substrate, and a hydrophilic layer and an adhesive layer respectively provided on opposite side walls of the transition layers; a centrifugal membrane layer is provided on a side wall of the adhesive layer facing away from the substrate; the thickness of the substrate is between 0.1 and 4 mm, the thickness of the hydrophilic layer is between 15 and 35 mm, and the thickness of the centrifugal membrane layer is between 0.08 and 0.2 mm.

[0006] The PC substrate anti-fog lens structure described in the utility model, wherein the substrate is a polycarbonate plate.

[0007] In the PC substrate anti-fog lens structure described in the utility model, the transition layer is made of organic silicone resin and has a thickness between 2 and 10 microns.

[0008] The PC substrate anti-fog lens structure described in the utility model, wherein the centrifugal film layer is a polyester film.

[0009] In the PC substrate anti-fog lens structure described in the utility model, the thickness of the adhesive layer is between 1 and 3 mm.

[0010] For the anti-fog lens structure of the PC substrate described in the present utility model, wherein the adhesive layer is any one of nano double-sided tape, organic sealant, and hot melt adhesive.

[0011] For the anti-fog lens structure of the PC substrate described in the present utility model, wherein protective films can be detachably arranged on the opposite side walls of the two hydrophilic layers. The protective film is a polyethylene film and its thickness is between 0.03 - 0.05 millimeters.

[0012] The beneficial effects of the present utility model are as follows: By adding a hydrophilic layer containing hydrophilic groups on the substrate, when raindrops fall on the hydrophilic layer, the contact angle can be less than 5 degrees and quickly spread out to form a water film, preventing condensation into water droplets, thereby effectively preventing the occurrence of fogging phenomenon. The anti-fog effect is good, and the structure is simple. With a thickness design within a certain range, the wear resistance and anti-bending performance can be more excellent. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will further illustrate the present utility model in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings:

[0014] Figure 1 is a sectional view of the anti-fog lens structure of the PC substrate of the present utility model.

[0015] Figure 2 is a microscopic image after water droplets are dropped on the surface of the anti-fog lens structure of the PC substrate of the present utility model. Detailed Embodiments

[0016] The terms "first", "second", "third", "fourth", etc. in the specification, claims, and drawings of the present invention are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0017] References to "embodiments" in this document mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment each time, nor are they independent or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0018] "Plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0019] Moreover, terms indicating directions such as "upper, lower, left, right, upper end, lower end, longitudinal" etc. are all referenced based on the posture position of the device or equipment described in this solution during normal use.

[0020] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0021] The PC substrate anti-fog lens structure of the preferred embodiment of the present utility model is as Figure 1-2 shown, including a substrate 10, transition layers 20 respectively provided on both side surfaces of the substrate 10, and a hydrophilic layer 30 and an adhesive layer 40 respectively provided on the side walls of the two transition layers 20 facing away from each other; a centrifugal film layer 50 is provided on the side wall of the adhesive layer 40 facing away from the substrate 10; the thickness of the substrate 10 is between 0.1 - 4 millimeters, the thickness of the hydrophilic layer 30 is between 15 - 35 nanometers, and the thickness of the centrifugal film layer 50 is between 0.08 - 0.2 millimeters; by adding a hydrophilic layer 30 containing hydrophilic groups on the substrate 10, the contact angle of raindrops on the hydrophilic layer 30 can be less than 5 degrees and quickly spread out to form a water film, preventing condensation into water droplets, specifically as Figure 2 shown, thereby effectively preventing the occurrence of fogging phenomenon, having good anti-fog effect, and simple structure. With a thickness design within a certain range, the wear resistance and anti-bending performance can be more excellent.

[0022] Among them, the main components and characteristics of the hydrophilic layer are as follows:

[0023] The pH value is directly between 6 and 7;

[0024] Component content / wt%: water 98.65 - 99.30; modified silica: 0.70 - 1.05;

[0025] The reaction activity has hydrophilic active groups.

[0026] In this embodiment, the substrate 10 is a polycarbonate plate to achieve the purpose of low cost, light weight and high strength, which is beneficial to improving the competitiveness of the product.

[0027] In this embodiment, the transition layer 20 is a silicone resin and its thickness is between 2 - 10 microns. The transition layer 20 can further improve the resilience performance of the substrate 10.

[0028] In this embodiment, the centrifugal membrane layer 50 is a polyester film (PET film) which has good transparency, mechanical strength, heat resistance and chemical resistance. It can remain stable within a wide temperature range and is not easily reactive with most adhesives.

[0029] In this embodiment, the thickness of the adhesive layer 40 is between 1 - 3 mm, which plays a role in bonding the centrifugal membrane layer 50 to ensure high strength, high transparency and good heat resistance of the whole structure. The adhesive layer 40 is any one of nano double-sided tape, organic sealant and hot melt adhesive. In this embodiment, nano double-sided tape is preferred;

[0030] Among them, the main components of the nano double-sided tape are as follows:

[0031] Polymer: As one of the main components of the nano double-sided tape, the polymer has very strong adhesion and wear resistance, providing the basic adhesion performance for the nano double-sided tape;

[0032] Siloxane: This is an organic compound that can enhance the adhesion ability of the nano double-sided tape. Through its special chemical properties, it further improves the adhesion effect of the nano double-sided tape;

[0033] Rubber: Rubber is also an important component in the nano double-sided tape, having excellent adhesion and elasticity, which helps the nano double-sided tape to form a firm bond on the surfaces of different materials;

[0034] Nanoscale colloidal particles: Nano transparent double-sided tape is usually composed of nanoscale colloidal particles. These colloidal particles have extremely small sizes and high specific surface areas, making the nano double-sided tape have better adhesion performance and transparency.

[0035] In this embodiment, protective films 60 can be detachably provided on the opposite side walls of the two hydrophilic layers 30. The protective films 60 are polyethylene films and their thickness is between 0.03 - 0.05 mm, playing a protective role. When in use, they can be directly peeled off.

[0036] It should be understood that those of ordinary skill in the art can make improvements or modifications according to the above description, and all such improvements and modifications shall fall within the protection scope of the appended claims of the present utility model.

Claims

1. A fog-proof lens structure for a PC substrate, characterized in that, It includes a substrate, transition layers respectively disposed on two side surfaces of the substrate, and a hydrophilic layer and an adhesive layer respectively disposed on side walls of the two transition layers facing away from each other; a centrifugal membrane layer is disposed on a side wall of the adhesive layer facing away from the substrate; the thickness of the substrate is between 0.1 and 4 millimeters, the thickness of the hydrophilic layer is between 15 and 35 millimeters, and the thickness of the centrifugal membrane layer is between 0.08 and 0.2 millimeters.

2. The anti-fog lens structure of the PC substrate according to claim 1, characterized in that, The substrate is a polycarbonate plate.

3. The anti-fog lens structure of the PC substrate according to claim 1, characterized in that, The transition layer is a silicone resin and its thickness is between 2 and 10 micrometers.

4. The PC substrate anti-fog lens structure according to claim 1, characterized in that, The centrifugal membrane layer is a polyester film.

5. The anti-fog lens structure of the PC substrate according to claim 1, characterized in that, The thickness of the adhesive layer is between 1 and 3 millimeters.

6. The anti-fog lens structure of the PC substrate according to claim 5, wherein, The adhesive layer is any one of a nano double-sided tape, an organic sealant, and a hot melt adhesive.

7. The anti-fog lens structure of the PC substrate according to claim 1, wherein Protective films are detachably disposed on side walls of the two hydrophilic layers facing away from each other, the protective films are polyethylene films and their thickness is between 0.03 and 0.05 millimeters.

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