CN216956551U - Novel prevent blue light lens - Google Patents

Abstract

The utility model discloses a novel blue light prevention lens which comprises a first anti-fog layer, a first hardening layer, a blue light prevention layer, a reinforcing layer, a lens base layer, a second hardening layer and a second anti-fog layer; first antifog layer sets up in the top of first stiffened layer, and first stiffened layer sets up in the top of preventing the blue light layer, prevents that the blue light layer sets up in the top of back up coat, and prevent that the blue light layer comprises nanometer grating layer and enhancement layer, and nanometer grating layer sets up on the enhancement layer, is equipped with nanometer grating microstructure on the nanometer grating layer, and the back up coat sets up in the top of lens basic unit, and the lens basic unit sets up in the top of second stiffened layer, and the second stiffened layer sets up in the top of second antifog layer. The utility model overcomes the defects in the prior art, precisely filters the blue light wave band harmful to human eyes, transmits beneficial light waves, inhibits environmental glare and eye protection rhythm, is natural and comfortable, avoids color cast generated by organic chemical dyes or a film coating mode, has green and environment-friendly process and materials and low cost, and greatly reduces the harm of harmful blue light in screens of daily electronic products and natural light to the eyes.

Description

Novel prevent blue light lens

Technical Field

The utility model relates to the technical field of lenses, in particular to a novel blue-light-proof lens structure.

Background

As is well known, blue light is different from ultraviolet light, and it exists not only in sunlight but also in neon lamps, mercury halogen lamps, office lighting, computer screen lights, mobile phones, televisions, tablet computers, ipads, and the like. Short-wave blue light is light with relatively high energy at wavelengths between 380nm and 500 nm. As can be seen from Table 2 in GB/T20145-2006/CIE S009/E:2002, blue light with the wavelength range of 415nm-460nm has extremely high energy, and the blue light hazard weighting function B (lambda) is 0.8-1, so that the short-wave blue light can easily penetrate through the crystalline lens of the eye to reach the retina, and the oxidation process of the macular region of the eye is rapidly accelerated to cause extremely large damage to the eye. In order to reduce the damage of blue light to eyes, wearing special blue light-proof glasses is one of the common protection means.

Although blue-light-proof glasses on the market at present are all declared to be capable of effectively preventing blue light, further research shows that the blue-light-proof effect can be achieved mainly through two means in the field of optical lens resin materials at present: firstly, an auxiliary agent is added into a formula of the composite material to absorb blue and violet light, wherein the auxiliary agent can be specifically divided into modified nano particles and blue light absorption auxiliary agents, such as Tinuvin213, Tinuvin571, UV-327, UV-328, UV-329 and the like; and secondly, the effect of absorbing blue and violet light is realized by coating the substrate. Both suffer from their own drawbacks.

By way of example in patent technology:

the technology for preventing blue light by combining modified nano particles and an ultraviolet absorbent comprises the following steps: patent applications of the Wanhua chemical group, Inc., publication Nos.: CN 111303612A; patent application of optics ltd, published under No.: CN 109164594A; patent application of ruizhou resin (eastern guan) limited, publication No.: CN 109135586A; patent application of Jiangsu Chongxi optical materials science and technology Limited company, publication No: CN 113292670A.

Lenses manufactured by adopting the technology of combining the modified nanoparticles and the ultraviolet absorber have obvious color cast (greenish or yellowish), can cause color distortion and visual fatigue, and can cause color weakness and even color blindness after long-term use. And the current commercialized organic dye mainly absorbs below 400nm, and the wave band with the largest damage to eyes, which is emitted by display screens such as mobile phones and the like, is 430-460nm, so that the blue light prevention lens manufactured by the modified nano particle and ultraviolet absorbent combined technology can only play a role in preventing ultraviolet rays, cannot play a role in preventing blue light, and cannot play a role in protecting the retina of eyes from being damaged by blue light.

Second, the blue light prevention technology formed by metal or metal oxide multilayer coating films with different refractive indexes, such as: patent of Jiangsu Australian optics Limited, grant publication No: CN 212623422U; patent of Jiangsu Huding optical glasses Limited, grant notice number: CN 213122480U; patent application to wenzhou lamban optics ltd, publication No.: CN 104730728A.

Although the coating process can keep the lens colorless and transparent and has high light transmittance, the wearing reflection is bright and the appearance is influenced, harmful blue light is reflected to eyes from the inner surface of the lens to be blue, the color distortion can be caused, and the process is complex and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel blue light prevention lens, which overcomes the defects in the prior art, precisely filters a blue light wave band harmful to human eyes, transmits beneficial light waves, inhibits environmental glare, protects eye rhythm, and is natural and comfortable.

In order to achieve the above object, the solution of the present invention is:

a novel blue light prevention lens comprises a first anti-fog layer, a first hardening layer, a blue light prevention layer, a reinforcing layer, a lens base layer, a second hardening layer and a second anti-fog layer; first antifog layer sets up in the top of first stiffened layer, and first stiffened layer sets up in the top of preventing the blue light layer, prevents that the blue light layer sets up in the top of back up coat, and prevent that the blue light layer comprises nanometer grating layer and enhancement layer, and nanometer grating layer sets up on the enhancement layer, is equipped with nanometer grating microstructure on the nanometer grating layer, and the back up coat sets up in the top of lens basic unit, and the lens basic unit sets up in the top of second stiffened layer, and the second stiffened layer sets up in the top of second antifog layer.

Further, the first anti-fog layer and the second anti-fog layer are formed by anti-fog coatings with high light transmittance, and the light transmittance is greater than 92%.

Further, the first and second hardbanding layers are comprised of a high transmittance hardbanding layer, the transmittance being > 92%.

Furthermore, the nano-grating layer is formed by solidifying a jelly on the reinforcing layer in a nano-imprinting or photoetching mode. The colloid is a compound formed by one or more of high-transmittance acrylic adhesive, UV adhesive, OCA adhesive, PU adhesive, silica gel or epoxy adhesive, namely the nano grating layer is a transparent light transmission layer. The reinforcing layer is one of PET, PP, PC and PE with high optical transmittance.

Further, the nano-grating microstructure can be two-dimensional or three-dimensional, and the shape can be one of rectangular, columnar, sinusoidal or sine-like.

Further, the lens base layer is formed by curing one or more high light transmittance lens resin monomers, such as a high refractive index lens resin monomer disclosed in CN 105175608B.

By adopting the scheme, the blue-light-proof lens and the blue-light-proof glasses using the same are different from the technology adopted by the blue-light-proof glasses on the market. Prevent blue light lens or prevent that blue light glasses on the market all have the colour cast of certain degree, add the coloured yellow that prevents the blue light dyestuff, the blue light of coating film can be blue partially owing to reflecting in the sunlight, uses and leads to visual fatigue more easily, uses for a long time and can lead to weak or achromatism even. The blue light prevention lens disclosed by the utility model can accurately filter 415-460nm blue light which is harmful to retina of human eyes greatly, well solves the problem of color cast, has the characteristics of no reflection, no glare, nature, comfort and the like, and can effectively protect eyes from being damaged by screen blue light when people in daily life, work, study, outdoor sports and long-term use of electronic products wear the glasses with the lens.

The technology of the utility model aims at the design of a blue light hazard curve, filters harmful blue light, transmits beneficial light waves, and realizes asymmetric filtration, no color cast and no reflection of environmental glare.

The present invention will be described in further detail with reference to the drawings and examples.

Drawings

FIG. 1 is a schematic structural view of a lens product of the present invention;

FIG. 2 is a schematic view of a blue light blocking layer according to the present invention;

fig. 3 is a spectrum diagram of the present invention applied to blue light prevention glasses.

Description of the reference symbols

The anti-fog lens comprises a first anti-fog layer 1, a first hardening layer 2, a blue light prevention layer 3, a nano grating layer 31, a reinforcing layer 32, a nano grating microstructure 33, a reinforcing layer 4, a lens base layer 5, a second hardening layer 6 and a second anti-fog layer 7.

Detailed Description

As shown in fig. 1 to 2, the present invention discloses a novel blue light prevention lens, which comprises a first antifogging layer 1, a first hard coating layer 2, a blue light prevention layer 3, a reinforcing layer 4, a lens base layer 5, a second hard coating layer 6 and a second antifogging layer 7. The first antifogging layer 1 is disposed above the first hard coat layer 2. The first hard coat layer 2 is disposed above the blue light-proof layer 3. The blue light prevention layer 3 is arranged above the reinforcing layer 4, the blue light prevention layer 3 is composed of a nano-grating layer 31 and a reinforcing layer 32, the nano-grating layer 31 is arranged on the reinforcing layer 32, and a nano-grating microstructure 33 is arranged on the nano-grating layer 31. The reinforcing layer 4 is disposed above the lens base layer 5. Lens substrate 5 is disposed over second stiffener 6. The second hardened layer 6 is provided above the second antifogging layer 7.

In the preferred embodiment of the utility model, the first antifogging layer 1 and the second antifogging layer 7 are composed of optical antifogging coatings with high light transmittance for lenses, the thickness is 2-10 μm, and the light transmittance is more than 92%.

The first hardening layer 2 and the second hardening layer 6 are formed by hardening coating with high light transmittance, such as silicon-containing lens coated with high light transmittance hardening liquid, the thickness is 2-10 μm, and the light transmittance is more than 92%.

In a preferred embodiment of the present invention, the nano-grating layer 31 of the blue-light prevention layer 3 is formed by solidifying a jelly on the strengthening layer 32 by means of nano-imprinting or photo-etching, and the thickness is 30-35 μm. The jelly is made of acrylic glue with high transmittance, that is, the nano-grating layer 31 is a transparent light-transmitting layer. The reinforcing layer 32 is optically high-transmittance PET and has a thickness of 20 μm. The nanograting microstructure 33 may be two-dimensional or three-dimensional, and may be one of rectangular, cylindrical, sinusoidal, or sine-like in shape. Taking a three-dimensional structure as an example, the line width of the nano-grating microstructure 33 is 20-60nm, the height is 50-100nm, and the distance is 20-100 nm. The nano-grating layer 31 has a high filtering value for harmful blue light in the spectral range of 400nm to 460nm, and has a high transmittance for other wavelengths in the visible light range.

The reinforcing layer 4 is used for increasing the toughness of the lens and has the thickness of 2-10 mu m.

The lens base layer 5 is formed by curing one or more resin monomers for lenses with high light transmittance, and the thickness is 2-5 mm.

The glasses made of the blue-light-proof lens are detected, and the detection data list 1 is as follows.

TABLE 1

As can be seen from the table 1 and the figure 3, the blue light prevention glasses made of the blue light prevention lens can accurately filter the blue light of 415nm-460nm which has great harm to the retina of human eyes, the product meets the technical requirements of GB/T38120 plus 2019 on light health and light safety application of the blue light protection film, and no nano particles, ultraviolet absorbent and metal coating are needed to be added, so that the problem of color cast is well solved, the blue light prevention glasses are suitable for being made into goggles, sports glasses, sunglasses and the like, and lens lenses of optical instruments, medical instruments and the like, and the glasses wearing the blue light prevention lenses and instruments using the blue light prevention lenses can effectively protect the eyes from being damaged by the blue light.

The above description is only an example of the present invention, and does not limit the scope of the present invention. It should be noted that after reading this description, those skilled in the art can make equivalent changes according to the design concept of the present application, which fall within the protection scope of the present application.

Claims (8)

1. The utility model provides a novel prevent blue light lens which characterized in that: the anti-fogging coating comprises a first anti-fogging layer, a first hardening layer, an anti-blue light layer, a reinforcing layer, a lens base layer, a second hardening layer and a second anti-fogging layer; first antifog layer sets up in the top of first stiffened layer, and first stiffened layer sets up in the top of preventing the blue light layer, prevents that the blue light layer sets up in the top of back up coat, and prevent that the blue light layer comprises nanometer grating layer and enhancement layer, and nanometer grating layer sets up on the enhancement layer, is equipped with nanometer grating microstructure on the nanometer grating layer, and the back up coat sets up in the top of lens basic unit, and the lens basic unit sets up in the top of second stiffened layer, and the second stiffened layer sets up in the top of second antifog layer.

2. The novel blue-blocking lens of claim 1, wherein: the first antifogging layer and the second antifogging layer are formed by antifogging coatings with high light transmittance, and the light transmittance is greater than 92%.

3. The novel blue-blocking lens of claim 1, wherein: the first and second hardbanding layers are comprised of high transmittance hardbanding layers, with transmittance > 92%.

4. The novel blue-blocking lens of claim 1, wherein: the nano grating layer is formed by solidifying jelly on the reinforcing layer in a nano stamping or photoetching mode.

5. The novel blue light blocking lens of claim 4, wherein: the jelly is one of acrylic glue, UV glue, OCA glue, PU glue, silica gel and epoxy glue with high transmittance.

6. The novel blue-blocking lens of claim 1, wherein: the reinforcing layer is one of PET, PP, PC and PE with high optical transmittance.

7. The novel blue-blocking lens of claim 1, wherein: the nano-grating microstructure is two-dimensional or three-dimensional, and the shape of the nano-grating microstructure is one of rectangle, column, sine shape or sine-like shape.

8. The novel blue-blocking lens of claim 1, wherein: the lens base layer is formed by curing one or more resin monomers for the lens with high light transmittance.

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