CN209784574U

CN209784574U - Shock-resistant high-light-transmission lens special for children and juveniles

Info

Publication number: CN209784574U
Application number: CN201920638987.8U
Authority: CN
Inventors: 郭强
Original assignee: Henan Daren Vision Glasses Co Ltd
Current assignee: Henan Daren Vision Glasses Co Ltd
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2019-12-13
Anticipated expiration: 2029-05-07

Abstract

The utility model discloses a high non-light tight children juvenile special lens shocks resistance, including the stratum basale, the stratum basale is made by polyurethane resin, the refracting index of stratum basale is greater than or equal to 1.59 scribble the priming paint layer on the stratum basale, the priming paint layer is made by thermoplastic polyurethane, and its thickness is 0.4 to 6 microns the surface coating on priming paint layer has the organosilicon hard coat that the refracting index is more than 1.47, organosilicon hard coat's thickness is 1 to 8 microns, just the thickness homogeneous phase of each position of organosilicon hard coat is equal still it has a layer of metal film to cover on the organosilicon hard coat.

Description

Shock-resistant high-light-transmission lens special for children and juveniles

Technical Field

The utility model mainly relates to the technical field of spectacle lenses, in particular to a shock-resistant high-light-transmission lens special for children and teenagers.

Background

In the prior art, lenses of glasses are generally made of glass or plastic, the glass lenses are traditional, but the glass is generally heavy in weight and poor in light transmission in an atomized state, and the plastic lenses used for the glasses at present have the advantages of light weight, almost no breakage, easiness in dyeing and the like compared with the traditional glass lenses. At present, the common plastic lenses on the market are made of acrylic resin, polycarbonate resin, ADC (azodicarbonamide) resin and the like, and the polyurethane plastic lenses have good optical characteristics and other excellent characteristics, so that the prospect is better than that of glass lenses, but the scratch resistance and impact resistance of the plastic lenses are far lower than those of the glass lenses.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a special lens for children and teenagers, which integrates the advantages of glass lenses and plastic lenses and has high shock resistance and light transmission.

In order to achieve the above object, the utility model provides a following technical scheme:

The shock-resistant high-light-transmission lens special for children and juveniles comprises a substrate layer, wherein the substrate layer is made of polyurethane resin, the refractive index of the substrate layer is larger than or equal to 1.59, a primer layer is coated on the substrate layer and made of thermoplastic polyurethane, the thickness of the primer layer is 0.4-6 micrometers, an organic silicon hard coating with the refractive index of more than 1.47 is coated on the surface of the primer layer, the thickness of the organic silicon hard coating is 1-8 micrometers, the thicknesses of all positions of the organic silicon hard coating are equal, and a metal film is further covered on the organic silicon hard coating.

As an improvement of the present invention, the metal film is a thin film made of metal oxide, and the metal oxide is any one of titanium oxide, silicon oxide, and zirconium oxide.

As a further improvement of the present invention, a fine granular zirconia and/or iron oxide is added to the silicone hard coat layer.

Preferably, an ultraviolet absorber is added between the silicone hard coating layer and the metal film, and the ultraviolet absorber is uniformly coated on the surface of the silicone hard coating layer.

As the improvement of the utility model, a plurality of tiny bulges and/or depressions are formed on the surface of the priming paint layer, and each bulge or depression has the curvature radius of 15nm to 150 nm.

As a further improvement of the utility model, the convex or concave surface is coated with fluorine coating agent.

Compared with the prior art, the utility model has the advantages of: the anti-impact plastic lens has high light transmission performance while preventing impact, can eliminate interference light generated by self reflection of the lens, prevent glare, absorb ultraviolet rays to protect eyeballs and prevent the plastic lens from aging under the irradiation of the sun.

drawings

Fig. 1 is a schematic structural view of an impact-resistant high-transmittance special lens for children and teenagers in an embodiment of the present invention.

Detailed Description

The impact-resistant high-transmittance children and teenagers special lens of the utility model is further explained with reference to the attached drawings.

As shown in the attached drawings, the embodiment is a shock-resistant high-light-transmission children's special lens, which comprises a substrate layer 1, wherein the substrate layer is made of polyurethane resin obtained by polymerizing at least one polyisocyanate compound and at least one polythiol and/or sulfur-containing polyol, and the refractive index of the substrate layer is more than or equal to 1.59.

The primer layer 2 is coated on the substrate layer, the primer layer is made of thermoplastic polyurethane, specifically, the thermoplastic polyurethane is made of diisocyanate and glycol, the thickness of the primer layer is 0.4-6 microns, if the thickness of the primer layer is less than 0.4 microns, the primer layer can not sufficiently absorb the impact energy applied to the primer layer, and the effect of protecting the substrate layer from cracking can not be achieved. However, if it is more than 6 μm, the light transmittance of the primer layer is poor, and the image through the primer layer is often distorted. It is preferred that the primer layer has a thickness in the range of 0.4 to 6 μm. Fine protrusions and/or depressions each having a radius of curvature of 15nm to 150nm are formed on the surface of the primer layer. The bulges and the depressions eliminate interference fringes caused by reflected light rays of the substrate layer and the primer layer by utilizing the spherical principle, and play roles of anti-dazzle and improving light transmission. These raised or recessed surfaces are coated with a fluorine coating agent which helps to improve the water and stain resistance of the lens. In addition, the fluorine coating agent has a low refractive index of 1.36, so it also contributes to the prevention of glare of the lens.

A silicone hard coat layer 3 having a refractive index of 1.47 or more is coated on the surface of the primer layer, the silicone hard coat layer having a thickness of 1 to 8 micrometers, and if the thickness thereof is less than 1 micrometer, the layer is poor in scratch resistance and impact resistance; however, if it is larger than 8 μm, the profile regularity of the layer is poor. The silicone hard coating layer has equal thickness at each position, and if the thickness is not equal, the lens coated with the hard coating layer with uneven thickness can generate irregular interference fringes and seriously affect the light transmission. The fine-particle zirconia and/or iron oxide is added to the silicone hard coating layer to increase the refractive index of the silicone hard coating layer.

The organic silicon hard coating is further covered with a metal film 4, the metal film is a thin film made of metal oxide, the metal oxide is any one of titanium oxide, silicon oxide and zirconium oxide, the metal film is covered with one layer of metal film, on one hand, the shock resistance of the lens can be improved, the lens can be protected, on the other hand, the metal oxide has poor reflection performance, and glare can be prevented.

And an ultraviolet absorber 5 is added between the organosilicon hard coating and the metal film, is uniformly coated on the surface of the organosilicon hard coating, is any one of benzophenone derivatives, benzotriazole derivatives and cyanoacrylate derivatives, can protect the eyes of a user by absorbing ultraviolet rays, and can absorb the heat of sunlight to prevent the phenomenon that the plastic is aged due to overheating of the substrate layer, the primer layer and the organosilicon hard coating.

The above description is for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way, and modifications and variations can be made without departing from the principles of the present invention.

Claims

1. The utility model provides a special lens of children and teenagers of high printing opacity shocks resistance which characterized in that: the silicone hard coating comprises a substrate layer, wherein the substrate layer is made of polyurethane resin, the refractive index of the substrate layer is larger than or equal to 1.59, a primer layer is coated on the substrate layer, the primer layer is made of thermoplastic polyurethane and is 0.4-6 micrometers in thickness, an organosilicon hard coating with the refractive index of more than 1.47 is coated on the surface of the primer layer, the thickness of the organosilicon hard coating is 1-8 micrometers, the thicknesses of all positions of the organosilicon hard coating are equal, and a metal film is further covered on the organosilicon hard coating.

2. The impact-resistant high-transparency juvenile-specific lens of claim 1, wherein: the metal film is a thin film made of metal oxide, and the metal oxide is any one of titanium oxide, silicon oxide and zirconium oxide.

3. The impact-resistant high-transparency juvenile-specific lens of claim 1, wherein: the fine-grained zirconium oxide and/or iron oxide is added to the silicone hard coat.

4. The impact-resistant high-transparency juvenile-specific lens of claim 1, wherein: and an ultraviolet absorber is added between the silicone hard coating and the metal film, and the ultraviolet absorber is uniformly coated on the surface of the silicone hard coating.

5. The impact-resistant high-transparency juvenile-specific lens of claim 1, wherein: the primer layer has a surface on which a plurality of fine protrusions and/or depressions are formed, each protrusion or depression having a radius of curvature of 15nm to 150 nm.

6. The impact-resistant high-transparency juvenile-specific lens of claim 5, wherein: and a fluorine coating agent is coated on the surfaces of the bulges or the depressions.