KR20080094165A - Optical lens indicated information of lens on the coating layer and method thereof - Google Patents

Abstract

An optical lens including a coating layer having lens information and a manufacturing method thereof are provided to simplify a lens manufacturing process by removing a lens package process. A protective coating layer(12) is stacked on a convex surface or a concave surface of an optic lens. The protective coating layer includes specification(15) of the lens. The specification of the lens includes at least one of a refractive index of the lens, a center position of the lens, a center axis of the lens, a focus of the lens, a manufacturing company, manufacturing dates, a manufacturing country, a bar code, a product name, a manufacturing company address, a contact address, a design, a trademark, and a symbol.

Description

Optical lens showing lens information on coating layer and manufacturing method thereof {OPTICAL LENS INDICATED INFORMATION OF LENS ON THE COATING LAYER AND METHOD THEREOF}

1 is a plan view of an optical lens according to an embodiment of the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

Explanation of symbols on the main parts of the drawings

10 optical lens 12 protective coating layer

15: Lens Unique Information

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper bag, which is a packaging material for protecting an optical lens, and relates to an optical lens displaying information of a lens on a protective coating layer laminated on a plane and / or a rear surface of an optical lens, and a manufacturing method thereof.

Optical lenses used in glasses are made of glass or transparent synthetic resin, and when they are distributed to each dealership or retail store in the manufacturing plant, they are generally packaged and distributed in paper bags to protect the optical lenses. Properties such as manufacturer, manufacturing number, quantity, manufacturer address, date of production, etc. are indicated.

However, since the inner surface of the general paper bag is expensive because a special coating or special paper is attached to protect the surface of the lens, the cost is increased due to the manufacture of the lens, and the paper bags left after using the lens are not collected and discarded. There are problems such as wasting resources.

In addition, since the paper bag does not completely block the optical lens from the external environment, there is a risk of damaging the film such as AR coating (anti-reflective coating) or multi-coating during the storage and distribution of the optical lens, as well as inflow of dust into the air. Therefore, the surface of the optical lens is contaminated, or there is a problem that the product value is significantly lowered due to discoloration of the paper bag during long-term distribution storage.

Furthermore, when inspecting a lens using a lens inspection device such as a lens meter, it is necessary to remove the lens from the paper bag. In this process, when the lens is taken out at the same time, the paper bag and the lens are interchanged. There is a problem such that the lens is mixed or the lens product that does not match the lens marking on the paper bag is entered.

Accordingly, the present inventors display the information of the lens directly on the protective coating layer of the optical lens currently used to solve the above problems, and when the distribution to the consumer at the factory, the unique information of the lens can be clearly displayed as well as the lens and The present invention has been completed by discovering that problems such as confusion of the unique indications are eliminated.

Accordingly, an object of the present invention is to provide an optical lens in which the unique information of the lens is displayed on the surface protective coating layer of the optical lens in place of the lens protective paper bag, and also provide a method of displaying the unique information of the lens on the surface protective coating layer of the optical lens. It is.

As the surface protective coating layer of the optical lens of the present invention for achieving the above object, it is preferable to use the 'coating composition for protecting the surface of the lens' of the Republic of Korea Patent Application No. 2006-0122903 proposed by the present inventors, Lens refractive index, power, lens center, central axis, focus, manufacturer, date of manufacture, country of origin, barcode, product name, manufacturer address, contact information, drawings or trademarks, etc., and at least one of the marking methods include laser marking, thermal transfer method, It is characterized by including any one of printing and the like.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a plan view of an optical lens according to an embodiment of the present invention, Figure 2 is a cross-sectional view taken along the line AA of Figure 1, the protective coating layer 12 on the surface of the lens 10 used in the present invention is a lens 10 Stacked on convex planes and / or concave bottoms, wherein the unique information 15 of the lens may be selectively displayed on each coating layer 12 on the front and / or bottom of the lens 10 or on both sides. have.

The protective coating layer 12 is a coating composition obtained by stirring and mixing 10-30% by weight of a resin which is soluble in alcohol and has an appropriate adhesive strength when dissolved, and 70-90% by weight of an alcohol solvent for dissolving the resin. It is cured by applying a thin thickness on the surface of the spectacle lens, and in order to improve the transparency and liquid flow of the coating liquid mixed with the resin and the solvent, the surface tension of the liquid to the lens surface of 0.2 to 5% by weight The additive may be more mixed.

In another aspect, the protective coating layer 12, the coating composition obtained by stirring and mixing 30 to 40% by weight of a water-soluble resin and 60 to 70% by weight of purified distilled water for dissolving the water-soluble resin on the surface of the spectacle lens It is cured by applying to a thin thickness, at which time 0.2 to 5% by weight of additives are further mixed to improve the transparency of the coating liquid mixed with the water-soluble resin and distilled water, the flow of the liquid, the surface tension of the liquid to the lens surface It may have been.

The composition of the coating layer 12 will be described in more detail as follows.

The resin is satisfactory as long as it can be dissolved in alcohol, has proper adhesive strength upon dissolution, and has a property of being easily peeled off at low temperature. Acetate-based resins such as polyvinyl butylal, polyvinyl ether, polyvinyl oxide, polyvinyl acetate, and the like, and natural polymer cellulose [ethyl hydroxy]. Ethyl hydroxyethyl, carboxymethylethyl, hydroxyethyl ethyl, etc.]. These resins have a property of increasing the viscosity of the coating composition by acting as a thickener together with adhesion depending on the content, 10 ~ The range of 30 weight% is suitable, More preferably, it is 15 to 25 weight%.

Water-soluble resins include typical polyvinyl alcohol resins, acrylic emulsion resins using emulsifiers, epoxy resins, styrene-acrylic copolymers, polyurethanes, and polyethylene oxides. Selection of physical properties (molecular weight) is required, and these water-soluble resins are also in the range of 30 to 40% by weight in consideration of the relationship between adhesiveness and viscosity.

On the other hand, the solvent is for dissolving the resin, for example methyl alcohol, ethyl alcohol, isopropyl alcohol, and the like, in addition to the physical properties by using auxiliary solvents such as ethyl ethyl cellosolve, butyl cellosolve, etc. It can be adjusted, the content can be adjusted to favor the viscosity and drying rate within the range of 70 to 90% by weight of the solvent.

In the case of distilled water for dissolving the water-soluble resin, it is preferable to use purified distilled water of 3 megohm or more, and if necessary, a small amount of the auxiliary solvent can be mixed, and the content of the solvent is 60 to 70% by weight. The content can be adjusted to favor viscosity and drying rate within the phosphorus range.

The additive is optionally added to improve the transparency and flow of the liquid, the surface tension of the liquid to the lens surface, for example, dimethylsiloxane, CMC, oleic acid, fluorine-based surfactants, etc. may be used, and after drying Phthalate plasticizers such as DHP (Diheptyl Phthalate) and DOP (Dioctyl Phthalate), stearic acid, or the like may be used as the plastic softening agent for improving the coating film (film) properties.

When the composition described above is applied to the plane and / or both surfaces of the spectacle lens 10 and heat treated, it is attached to the surface of the lens 10 in the form of a thin film such as a film to obtain a transparent protective coating layer 12. In this state, distribution is possible.

In order to use a lens after distribution, the protective coating layer 12 is peeled off, and the protective coating layer 12 is easily peeled off because it is in the form of a thin film.

Of course, the protective coating layer 12, which is the object of the lens-specific information 15 display in the present invention, is not limited to the coating layer made of the above composition, and is laminated on the surface of the lens 10 to protect the lens and at the same time after distribution. It should be understood that there is no limitation as long as the film is arbitrarily peelable from the lens at the time of lens processing or inspection, and thus the protective coating layer 12 of the present invention collectively refers to the protective film form.

Lens specific information 15 displayed on the surface of the lens protective coating layer 12 may be displayed by various printing techniques such as pad printing or screen printing, laser marking technique using laser marking equipment, or thermal transfer method. The display of the lens peculiar information 15 is not limited to the above-listed techniques, and various display techniques may be applied as long as the lens peculiar information can be identified on the surface of the protective coating layer 12.

That is, the protective coating layer 12 is laminated on the convex plane or concave bottom of the optical lens 10, and the unique information 15 of the lens is displayed on the surface of the protective coating layer 12, for example, by using a laser marking equipment. When the unique information 15 is to be displayed, if the thickness of the protective coating layer 12 is approximately 5 to 30 μm, the laser marking equipment focuses the laser to a height thinner than the thickness of the protective coating layer 12 so that the lens is not damaged. Display the unique information 15 by adjusting.

The unique information 15 of the lens may include a barcode 15a as shown in FIG. 1, and may be a character display unit 15b displaying various types of information.

As illustrated in the character display unit 15b, at least one display item of the unique information is at least one of the lens refractive index, the frequency, the lens center position, the central axis, the focus, the manufacturer, the date of manufacture, the country of manufacture, the product name, the manufacturer's address, and the contact information. It may include, as well as may be selected from a trademark or logo, various patterns or symbols indicating the lens company.

According to the optical lens and the manufacturing method of the lens information is displayed on the coating layer of the present invention described above, the optical lens is displayed on the surface protective coating layer of the optical lens to replace the lens protective paper bag, so that the lens By simplifying the manufacturing process by eliminating packaging such as bags, the production cost of optical lenses can be reduced by minimizing equipment investment, reducing the number of workers, and excluding the purchase cost of paper bags.

In addition, by preventing the contamination of the lens generated during the distribution of the lens to provide a high-quality lens and at the same time increase the customer satisfaction, there is an advantageous effect that it is easy to handle by preventing the lens confusion in the inspection process of the lens. .

Claims (6)

Optical lens, characterized in that the unique information (15) of the lens is displayed on the protective coating layer (12) laminated on the convex plane or concave bottom of the optical lens. The method according to claim 1, The unique information 15 includes at least one of a lens refractive index, a frequency, a lens center position, a central axis, a focus, a manufacturer, a manufacturing date, a manufacturing country, a barcode, a product name, a manufacturing address, a contact, a design, a trademark, a symbol. An optical lens, characterized in that. The method according to claim 1 or 2, The protective coating layer 12 is 10 to 30% by weight of the polymer resin and 70 to 90% by weight of the alcohol solvent mixed with one or more selected from the group consisting of methyl alcohol, ethyl alcohol and isopropyl alcohol. An optical lens comprising a coating solution obtained by stirring and mixing 5% by weight on the lens surface, respectively, to be cured. The method according to claim 1 or 2, The protective coating layer 12 is applied to the lens surface by curing the coating liquid mixed with 10 to 40% by weight of the water-soluble resin and 0.2 to 5% by weight of the additive in 60 to 90% by weight of distilled water, respectively, and hardened. . A protective coating layer is laminated on a convex plane or concave bottom of an optical lens, and the unique information of the lens is displayed on the surface of the protective coating layer. The method according to claim 5, The display of the unique information of the lens is a method of displaying the lens information on the lens coating layer, characterized in that at least one of thermal transfer method, printing method, laser marking technique.

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