KR20040099815A - Collar ton polarized light lens that have gradation effect that use polarizer - Google Patents

Abstract

PURPOSE: Provided is a color tone polarized lens having gradation effect to be clearly distinguished even in a dark or bright region, to serve as a protector against sunlight, and to give comfortable wearing feelings. CONSTITUTION: The color tone polarized lens having gradation effect includes a polarized lens formed by attaching protective layers to both sides of a polarizer with an adhesive which has physical properties being unchanged according to coloring temperature, and a gradation polarized lens(14) formed by coloring a first color(23) and a second color(24) onto the polarized lens. The polarizer is a linear polarizer or circular polarizer. The gradation polarized lens is formed by attaching coloring protection layer which is formed by coloring one or two color on the protective layer, onto both sides of the polarizer.

Description

Color ton polarized light lens that have gradation effect that use polarizer}

The present invention relates to a color tone polarized lens having a gradation effect using a polarizer for identifying the surrounding environment in a bright field as well as a dark field of the sunglasses for wearing on the face and shielding light.

Sunglasses, which are generally used for shading, are worn to supplement and protect eyesight from the sun. Recently, they are also used as accessories that are part of fashion. The lenses used for sunglasses are glass, polycarbonate, and acrylic resin. The lens is made of a transparent plastic material to prevent color glare caused by sunlight and to absorb UV rays into the lens to prevent UV rays from reaching the eye. The colored lenses used in the known sunglasses are two types of lenses having different coloring methods, that is, a single color lens in which the entire lens is darkly colored in a single color, and the upper side of the lens is dark in color, and the lower side is colored lightly and lightly colored. ) Gradient colored styrene to have the effect The former monochromatic lens prevents glare from sunlight in bright sunlight, but dark colors such as indoors and underpasses obscure the field of view, making it difficult to identify the surrounding environment. There is a problem that can not be, and the above-described gradation colored lens is able to distinguish the visual field in bright and dark places, which is not very difficult to realize with ordinary synthetic eyeglass lenses, the coloring method is to produce a lens In the process, a dye or pigment for coloring is mixed with a raw material to prepare a lens having a color, or a means for coating a metal thin film on the surface of a lens, or recently, a colorless transparent lens is manufactured by the development of a coloring process. And then use a post-treatment method to color it in any color according to your needs. The post-treatment method of coloring an arbitrary color is a dipping method in which a lens is immersed in a dye in a container and colored. A dyeing process is performed by repeatedly dipping and lifting a lens in a dye. Since the lower part is contained for a longer time than the upper part, the lower part is colored in dark colors. Since the general synthetic resin lens is injection molded to maintain the shape as a molded lens in which the lens body is integrated, the effect of dipping is only immersed in the coloring dye without special technical method in order to maintain separate coloring. As a result of the penetration of a separate color to the original lens color by the effect of the colored lens is implemented. This is because when the molecular binding structure of a synthetic resin lens having a unified physical property is given a temperature of about 85-88 ° C. or higher, the binding molecule ring spacing of the synthetic resin itself is loosened to allow a space where a third material dye can penetrate. When the synthetic resin is cooled, the dye penetrated into the loose molecular ring is trapped in the binding structure of the tightened molecular ring. This method is a dipping (Deeping) coloring technique has been published for a long time, such as the coloring of lenses and eyeglass frames. As described above, it is not difficult to provide a gradation effect to a conventional lens, but as described above, a colored lens that implements a gradation effect to a general lens cannot effectively block dazzling rays of sunlight and thus blocks dazzling rays of sunlight. Although a polarizing lens having an effect is preferable, the polarizing lens has been difficult to manufacture a two-stage colored lens having a gradation effect by using the above-described dipping coloring method, which is because of the configuration of the polarizing lens and the mother of the polarizing lens. The polarizer must be placed at the center of the polarizer and bonded to the polarizer protective layer in the form of a sandwich. The polarizer transmits only natural light having a vibration plane in a direction of 360 °° in the polarizer and absorbs the remaining light. There are many linear polarizers that can It is the most suitable for the lens among the polarizers of the paper is generally used as a lens polarizer. In order to make a linear polarizer, a polarizer that polarizes a PVA (Poly vinyl alcohol) film treated with iodine (Iodine) is formed and a polarizer is formed on both sides of the polarizer. A protective layer made of CTA (Cellulose Triacetate) film having good abrasion resistance and water resistance is adhered to. A polarizing lens is commercially available as a polarizing plastic thin film for use as a general spectacle lens in an uncolored state. It is becoming. As described above, the polarizer is based on a hydrophilic PVA film, and the protective layer of the CTA film having better water resistance and durability is adhered to both sides of the polarizer with an adhesive to form a polarizing lens. When immersed in the coloring dye, CTA film is weak in heat resistance, so the heat denaturation is so easy that the physical properties are removed, and the adhesive strength becomes too weak as the solvent component of the adhesive melts at the temperature of the coloring dye (about 85-88 ℃). Dye moisture penetrates CTA film and melted adhesive to reach the polarizer and absorbs it, and thus changes the physical properties of the polarizer that absorbs moisture. There is a problem.

Accordingly, an object of the present invention is to provide a color tone polarized lens having a gradation effect using a polarizer that not only determines the field of view in bright and dark places, but also functions to block the dazzling rays of sunlight to make the field of view comfortable. It is to

A color tone polarized lens having a gradation effect using a polarizer providing the object described in accordance with the present invention is to be attached by coloring one or more colors on the polarizing lens by adhering a protective layer with an adhesive on both sides of the polarizer. The present invention will be described in detail with reference to the drawings and embodiments.

1 is an exploded perspective view showing the configuration of a conventional polarizing lens.

FIG. 2 is a perspective view showing a state in which the polarizing lens of FIG. 1 is colored; FIG.

3 is a perspective view of a gradation polarizing lens molded according to the first embodiment of the present invention.

4 is a partially enlarged cross-sectional view of the gradation polarizing lens of the present invention;

5 is an exploded perspective view of a gradation polarization lens according to another embodiment 2 of the present invention;

** Description of the symbols for the main parts of the drawings **

10 ............ Polarizer. 11,11 '. ........ Protective layer.

12.12 '........ adhesive. 13 .............. Polarizing lens.

14 ............ Gradient polarized lenses. 30,30 '..... Colored protective layer.

1 is an exploded perspective view of a conventional polarizing lens, FIG. 2 is a perspective view showing a process for coloring a polarizing lens, FIG. 3 is a perspective view of a gradation polarizing lens of the present invention, and FIG. As a cross-sectional view, reference numeral 10 denotes a polarizer, and the polarizer 10 is made of polyvinyl alcohol (PVA) film dyed with iodine or dichroic dye, and both sides of the polarizer 10 The polarizing lens 13 is formed by laminating the protective layers 11 and 11 'with the adhesive 12 and 12'. The protective layers 11 and 11 'are laminated on both surfaces of the polarizer 10. The PVA constituting the polarizer 10 is to reinforce the water resistance and durability because the water resistance and durability are too weak, and generally, a protective layer 11 (11 ') made of a CTA (Cellulose Tri acetate) film or polycarbonate or the like. ) Was used.

However, the CTA film is so soft that it easily scratches the surface and has excellent light transmittance, which is not suitable for optical use and is mainly used as a window for industrial digital number display. It is used.

In order to overcome the optical defect of the CTA film, the material to be applied to the polarizer 10 protective layer (11, 11 ') of the present invention is excellent in the optical stability and optical stability in the present invention because of the small optical distortion Polymers of polyol (allylcarbonate) monomers, polyacrylates, poly (alkyl acrylates), such as polymethylmethacrylates, polycarbonates, polyacetylenes, terephthalates, polystyrenes, and poly (styrene-) Methyl methacrylate) copolymers, poly (styrene-acrylonitrile) copolymers and polyvinyl butyral, and mixtures of transparent copolymers and transparent copolymers are also suitable as applications.

In the present invention, a polycarbonate such as poly (4,4'-dioxydiphenyl-2,2'-propane) and a polymer of polymethyl methacrylate and polyol (allylcarbonate); In particular diethylene glycol bis (allyl carbonate) and for example vinyl acetate and copolymers thereof, such as copolymers of 80-90% diethylene glycol bis (allyl carbonate) and 10-20% vinyl acetate; Particularly suitable are optically clear polymeric organic materials made from 80-85% bis (allyl carbonate) and 15-20% vinyl acetate.

The polyols (allyl carbonates) described above are allyl carbonates such as aliphatic glycol bis (allyl carbonate) compounds or alkylidene bisphenolbis (alkyl carbonate) compounds of linear or molecularly aliphatic or aromatic liquid polyols. These monomers may be depicted as polyols, for example unsaturated polycarbonates of glycols. Monomers can be prepared by methods known in the art such as those of US Pat. Nos. 5,370,567 and 2,403,113.

In addition, in the present invention, the adhesives 12 and 12 'for adhering the protective layers 11 and 11' to both surfaces of the polarizer 10 are made by the process of the embodiments described below.

Example 1

1st process

5-15 kg of monooleate and 1-6 kg of fumaric acid are mixed and heated in a reduced pressure oven at 250-310 degrees Celsius for 100-280 minutes to form an unsaturated ester resin.

2nd process

500-3000 cc of vinyl formic acid and 10-45% equivalent of benzoin are mixed and heated to 40-50 degrees Celsius in a reduced pressure oven to produce unsaturated carboxylic acids.

3rd process

2-14% equivalent of polyvinyl acetate is mixed with 2-14% equivalent of the polymer coagulant acrylamide in the product unsaturated ester resin 1000-4500cc made in the first step and 500-2000cc product unsaturated carboxylic acid made in the second step. 10-40% equivalent is mixed, and then benzoyl peroxide is added as an initiator in a ratio of 0.1-1.0% equivalent, heated to 30-75 ° C in a reduced pressure oven, and cooled to complete the synthetic resin adhesive.

The adhesives 12 and 12 'made by the process of the above embodiment have better heat resistance than conventional adhesives, so that the adhesives 12 and 12' are evenly applied to the adhesive surfaces of the polarizer 10 and the protective layers 11 and 11 'to protect the polarizer 10 and the polarizer 10. When the layers 11 and 11 'are bonded to each other and irradiated with ultraviolet rays in the wavelength range of 280 nM to 380 nM, the applied binder 12 and 12' are cured to form protective layers 11 and 11 on both sides of the polarizer 10. ') Is bonded to form a polarizing lens (13). In order to color the polarizing lens 13 as described above, the dye is immersed in the coloring dye 22 contained in the dye tank 21 equipped with the heater 20 on the bottom, and the coloring dye 22 at this time is weakened. After dipping by heating to 85 ℃ -88 ℃ and immersing them slowly, it is possible to color one or two or more colors by dipping slowly, so that the synthetic resin adhesive maintains the adhesive strength without changing the physical properties even when immersed. Gradient polarization lens 14 having a gradation effect by being immersed in the coloring dye 22 of one color 23 and two colors 24 shown by broken lines as shown in FIG. In the present invention, since the coating treatment on the surface of the gradation polarization lens 14 is to prevent scratching, it may be before or after the coloring process.

In addition, the gradation polarization lens 14 for achieving the object of the present invention can also be made by the second embodiment.

Example 2

1st process

Prior to adhering the protective layers 11 and 11 ′ to the polarizer 10, dipping is performed on the coloring dye 22 of the dye tank 21 to color one color 23 to two color 24. Protective layers 30 and 30 'are made.

2nd process

The color protective layers 30 and 30 'obtained in the first step of Example 2 are adhered to both surfaces of the polarizer 10 with adhesives 12 and 12' to form the gradient polarization lens 15.

As described above, in the gradation polarization lens 14 according to the first exemplary embodiment of the present invention, the adhesives 12 and 12 'adhering the protective layers 11 and 11' to both surfaces of the polarizer 10 have a color temperature. Since the physical properties do not change, even if the adhesive layer 12 penetrates between the ring gaps of the protective layers 11 and 11 ', the adhesive 12, 12' blocks the moisture of the colored dye 22 from reaching the polarizer 10. Since the polarizer 10 is not deformed, the dipping operation can be performed several times on the coloring dye 22 for coloring the polarizing lens 13 so that one color 23 or two colors 24 are easily colored. In addition, the gradation polarization lens 15 made in accordance with the second embodiment of the present invention is a colored protective layer 30, 30 'colored the protective layers 11, 11' first to 1 to 2 colors. ) Is obtained by adhering both sides of the polarizer 10 with an adhesive 12 (12 '). It is to make the gradation polarization lens 15 without crushing the polarizer due to the water dissolved dyes generated when coloring, so as to distinguish the field of vision from the bright and dark places, and protect the eye from the dazzling rays and to be comfortable in the wearing state. The effect of providing the gradation polarization lenses 14 and 15 for living.

Claims (6)

A polarizing lens 13 bonded to both surfaces of the polarizer 10 by an adhesive 12 and 12 'whose physical properties do not change at a coloring temperature; A color tone polarizing lens having a gradation effect using a polarizer, characterized in that the gradation polarization lens 14 is formed by coloring one color (23) to two colors (24) on the polarizing lens (13). The method of claim 1, wherein the protective layers 11 and 11 'are bonded to both surfaces of the polarizer 10, and mixed with 5-15 kg of monooleate and 1-6 kg of fumaric acid according to Example 1 1000-4500cc of unsaturated ester resin prepared by heating 100-280 minutes at 250-310 degrees Celsius in a decompression oven, and 500-3000cc of vinyl form in Example 2, and 10-45% equivalent of benzoin, 500-2000 cc of unsaturated carboxylic acid made by heating at 40-60 degrees Celsius are mixed together, 2-14% equivalent of acrylamide is mixed with a polymer flocculant, 2-14% equivalent of polyvinyl acetate is added, and 0-40% equivalent of methyl chloride is added. After mixing, and adding benzoyl peroxide at a ratio of 0.1-1.0% equivalent as an initiator, and then heated to 30-75 ℃ in a reduced pressure oven and then cooled to the synthetic resin adhesives (12) (12 ') according to Example 1 The polarizer using a polarizer characterized in that the adhesive Color tone polarized lens with a radiation effect. A polymer of polyol (allylcarbonate) monomer, poly acrylate, poly (alkyl acrylate) for example polymethyl methacrylate, polycarbonate, polyethylene terephthalate, polystyrene, poly ( Styrene-methyl methacrylate) copolymers, poly (styrene-acrylonitrile) copolymers, and polyvinyl butyral; poly (4,4'-dioxydiphenyl- Polymers of polycarbonates such as 2,2'-propane), polymethylmethacrylates, polyols (allylcarbonates), in particular diethylene glycol bis (allyl carbonate) and for example vinyl acetate and copolymers thereof such as 80-90% diethylene glycol Copolymers of bis (allyl carbonate) with 10-20% vinyl acetate, in particular 80-85% bis (allyl carbonate) and 15-20% vinyl a Color tone polarized light having a gradation effect using a polarizer obtained by adhering the protective layers 11 and 11 'made of an optically transparent polymerized organic material prepared from tate with the adhesive 12 and 12' according to Example 1 lens. The color tone polarizing lens having a gradation effect using a polarizer according to claim 1, wherein the polarizer is a linear polarizer. The color tone polarizing lens having a gradation effect using a polarizer according to claim 1, wherein the polarizer is a circular polarizer. The conventional adhesive 31 (or both sides) of the polarizer 10 of the colored protective layers 30 and 30 ', which is obtained by coloring the protective layers 11 and 11' in one or two colors. A color tone polarizing lens having a gradation effect using a polarizer, characterized by the gradation polarizing lens 15 according to Example 2 bonded to each other.