JPH1016113A - Light transmission member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-cost light transmission member having both a function for correcting a visual acuity and a function for shielding ultraviolet rays. SOLUTION: A colored thin film 3 formed of a plastic or metal is provided at a front surface side of a lens 2 formed of a transparent plastic or glass. The film 3 has a body formed of a sheet-like colored film made of a plastic or metal, an adhering part, and a coating sheet. The film 3 is laminated to the lens 2 by peeling the sheet and bringing the adhering part into close contact with the lens. A function for correcting a visual acuity is obtained by the lens 2. A function for shielding ultraviolet rays is obtained by the film 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-transmitting member, and more particularly to a light-transmitting member used for eyeglass lenses having both a function of correcting visual acuity and a function of reducing light transmitted to block ultraviolet rays or the like. The present invention relates to a light-transmitting member used for goggles and glasses lenses such as sunglasses, which has a function of blocking only ultraviolet rays and the like, thereby making it difficult to transmit light.

[0002]

2. Description of the Related Art In general, there are various types of eyeglass lenses as light transmitting members, for example, a lens for correcting eyesight and a sunshade are known. Examples of known methods include skis without a vision correction function, dust goggles, and helmets.

[0003] A spectacle lens for correcting vision is a plastic or glass transparent lens fixed to a plastic or metal frame, and a spectacle lens according to a prescription is used. Has the function of correcting

On the other hand, a sunshade lens (also referred to as sunglasses) is a plastic or glass colored spectacle lens fixed to a plastic or metal frame, and depends on the characteristics of the colored spectacle lens. It can block ultraviolet light, visible light, and the like, and generally does not have a function of correcting visual acuity.

[0005] The use of eyeglass lenses for eyesight correction makes it possible to supplement or adjust eyesight when reading and writing characters and the like, while using eyeglass lenses for sunshades. It is also possible to reduce the amount of light reaching the eyes when performing outdoors in fine weather, thereby protecting the eyes from ultraviolet rays and the like.

[0006] However, the above-mentioned eyeglass lens has only one of the function of correcting vision and the function of blocking ultraviolet rays or the like. It is necessary to prepare the two types of glasses lenses described above, which is very complicated.

On the other hand, in order to solve the above problems,
There has been proposed a light transmitting member which is a spectacle lens having a function of blocking ultraviolet rays and the like in addition to a function of correcting visual acuity, using a dispersion of pigments in a spectacle lens for correcting eyesight.

However, such a spectacle lens requires a step of dispersing a pigment in the manufacturing process, and therefore requires more time and effort in manufacturing than in the case of manufacturing a transparent lens. . Further, since the pigment is dispersed in the spectacle lens itself, it is sometimes good when it is bright in the daytime, but it becomes difficult to use it when it is used outdoors at night or in a dark room.

On the other hand, even in the case of skis without a function for correcting vision, lenses for glasses for dustproof goggles, and lenses for glasses used for helmets, as in the case of the above-mentioned sunglasses, the intensity of the sun's rays during daytime is reduced. Regardless, it is sometimes difficult to use because it is constant, or it is sometimes difficult to use it outdoors at night or in a dark room.

[0010] A first object of the present invention is to provide both a function of correcting visual acuity and a function of blocking ultraviolet rays or the like by providing a light transmission restricting portion in a light transmitting portion having a function of correcting visual acuity later. Another object of the present invention is to provide a light transmitting member which can be manufactured very easily and can reduce the manufacturing cost. A second object of the present invention is to provide a light transmission restricting section at a light transmitting section which does not have a function of correcting visual acuity by merely transmitting light, thereby having only a function of blocking ultraviolet rays or the like. It is another object of the present invention to provide a light transmitting member that can be manufactured very easily and can reduce the manufacturing cost. A third object of the present invention is to provide a light transmission limiting portion that can be attached to and detached from the light transmitting portion, and by providing different light transmission limiting portions, it is possible to obtain a light transmission amount according to the use environment. It is an object of the present invention to provide a light transmitting member that can perform the light transmission.

[0011]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a light transmitting portion made of plastic or glass, a sheet provided on at least one surface of the light transmitting portion, and a light transmitting portion. And a light transmission restricting portion that transmits light more easily than the light transmitting member. The light transmission restricting portion is made of colored plastic or metal, and the light transmission restricting portion is provided on the lens unit by sticking so as to be detachable, or is provided on the lens unit by vapor deposition. Have.

[0012]

According to the present invention, by adopting the above-mentioned means, the light transmitting portion simply transmits light or supplements or adjusts the visual acuity, and the light transmitting restricting portion blocks ultraviolet light or visible light. Can be difficult to penetrate,
You can protect your eyes from them. The light transmission restricting portion is provided on at least one of the front surface and the back surface of the light transmitting portion by sticking or vapor deposition. And can be peeled off from the light transmitting portion.

[0013]

Embodiments of the present invention shown in the drawings will be described below. 1 to 4 show an embodiment in which the light transmitting member according to the present invention is used for an eyeglass lens. In the drawing, FIG.
2 is a perspective view showing the whole, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, FIG. 3 is a perspective view showing the whole thin film portion, and FIG. 4 is BB of FIG. It is sectional drawing seen along the line.

That is, a spectacle lens 1 which is a light transmitting member shown in this embodiment includes a lens portion 2 which is a transparent light transmitting portion for correcting visual acuity formed of plastic or glass, and a surface of the lens portion 2. Alternatively, it has a colored thin film portion 3 which is provided on the back surface (the front surface in this embodiment) and is formed of plastic or metal and is a light transmission restricting portion for blocking ultraviolet light, visible light and the like.

The lens section 2 is formed to have characteristics based on a prescription, and a concave lens, a convex lens, an astigmatic lens, or the like is used according to the state of eyes such as myopia, hyperopia, and astigmatism.

The thin film portion 3 has substantially the same shape as the lens portion 2,
A main body portion 4 formed in a size, an adhesive portion 5 provided on the rear surface of the main body portion 4 with a predetermined thickness over the whole;
And a coated paper 6 formed to have substantially the same shape and size as the main body 4 provided on the surface of the paper.

The main body 4 is made of a sheet-like colored film made of a synthetic resin such as polyethylene, and is formed by punching the material into an oval or the like. By using the colored film as a material, The effect of blocking ultraviolet light, visible light, and the like can be obtained by the properties of the pigment dispersed in the material. The main body 4 may be a sheet-like film made of a metal such as aluminum, and may be used by punching the material into an elliptical shape or the like.

The bonding portion 5 is made of a synthetic resin-based adhesive, and is provided with a predetermined thickness on the entire back surface of the main body portion 4.
Is attached to the front surface side of the lens unit 2. In addition,
The adhesive is not limited to a synthetic resin, but may be a plant-based or animal-based adhesive.

A coating paper 6 is provided on the surface of the bonding portion 5,
The coated paper 6 prevents the bonding portion 5 from drying, prevents dust and the like from adhering to the bonding portion 5, and prevents the bonding force of the bonding portion 5 from decreasing.

The coated paper 6 is obtained by coating the surface of a paper body 6a with a synthetic resin film 6b.
By contacting the adhesive portion 5 via the film portion 6b,
The main body 6a made of paper is prevented from directly contacting the bonding portion 5. Note that the coated paper 6 may be made of plastic.

A part of the thin film portion 3 is provided with a small angle fan-shaped cut 7 in order to correspond to the curvature of the lens portion 2. That is, since the bonding surface of the thin film portion 3 is flat while the surface of the lens portion 2 is a curved surface, wrinkles and the like are formed in the thin film portion 3 when the lens portion 2 is stuck as it is, This affects the performance of the device. Therefore, the fan-shaped notch 7 having a small angle is provided, and the thin film portion 3 is formed.
It is necessary to make the adhesive surface of the lens unit coincide with the curvature of the lens unit 2. The cut 7 is not limited to one location, but may be provided at a plurality of locations. Further, a small circular relief (not shown) communicating with the cut 7 is provided at the center of the thin film portion 3.
May be provided.

In this embodiment, cut lines corresponding to several kinds of curvatures are drawn on the coated paper 6 so as to correspond to several kinds of curvatures. Therefore, during use, the thin film portion 3 is cut along a cutting line corresponding to the curvature of the lens portion 2.
It is only necessary to provide a cut 7 in the hole.

In the spectacle lens 1 according to this embodiment configured as described above, the thin film portion 3 is provided by sticking on the surface side of the lens portion 2, so that the spectacle lens 1 has a visual acuity. It can be provided with both a function of correcting the image and a function of blocking ultraviolet rays and the like.

Therefore, even when both functions are required, it is not necessary to prepare two types of glasses having two types of glasses lenses, and in addition to the glasses having the lens portion 2 for correcting vision, other than glasses. It is sufficient to prepare the thin film portion 3 for restricting light transmission.
Then, the thin film portion 3 may be attached to the surface of the lens portion 2 via the bonding portion 5.

The lens section 2 is made of transparent plastic or glass.
There is no need for a step of dispersing the pigment in the production process, and the production of the lens portion 2 is simplified, and an inexpensive lens can be provided.

Further, since the thin film portion 3 is formed by punching a sheet-like film made of colored plastic or metal into an elliptical shape or the like, a commercially available colored plastic or metal film can be used. You can do it. Therefore, the manufacturing of the thin film portion 3 does not take much time, and the manufacturing cost of the thin film portion 3 can be reduced.

Since the thin film portion 3 is adhered to the surface of the lens portion 2 via the adhesive portion 5, the thin film portion 3 can be adhered or peeled repeatedly as long as the adhesive force of the adhesive portion 5 does not decrease. Or you can. Therefore, the thin film portion 3 can be attached when necessary, which is convenient for carrying, and when used outdoors at night or in a dark room, the thin film portion 3 may be peeled off from the lens portion 2. It does not make it difficult to use even in an unfriendly environment.

Further, if thin film portions 3 having different light transmission amounts are prepared, the light transmission amount can be adjusted according to the use environment.

FIGS. 5 and 6 show another embodiment of the spectacle lens according to the present invention. The spectacle lens 1 shown in this embodiment has a surface of a lens portion 2 for correcting vision. The light shielding thin film portion 3 is formed on the side by vapor deposition, and the other configuration is the same as that shown in the above embodiment.

In the eyeglass lens 1 according to this embodiment, the eyeglass lens 1 can have both a function of correcting visual acuity and a function of blocking ultraviolet rays and the like. If you need the features of
It is not necessary to prepare two types of glasses provided with two types of glasses lenses.

Since the lens section 2 is formed of transparent plastic or glass, the lens section 2
There is no need for a step of dispersing the pigment in the production process, and the production of the lens portion 2 is simplified, and an inexpensive lens can be provided.

Further, since the thin film portion 3 is provided on the surface side of the lens 2 by vapor deposition, the manufacturing of the thin film portion 3 is simplified, and the manufacturing cost of the thin film portion 3 can be reduced.

In the above embodiment, an adhesive portion is provided on the thin film portion 3 for attaching the thin film portion 3 as the light transmission restricting portion to the lens portion 2 as the light transmitting portion, or the lens portion 2 is formed on the lens portion 2 by vapor deposition. Although it was mounted, it may be mounted by static electricity or the like, and the mounting means is not particularly limited.

Further, in the above-described embodiment, the eyeglass lens having the visual acuity correcting function has been described. However, the eyeglass lens having no visual acuity correcting function, for example, a flat glass lens is used as the light transmission restricting unit. The thin film portion 3 may be attached to make sunglasses, and furthermore, a lens portion which is a light transmitting portion of ski or dustproof goggles, or a light transparent portion provided on a helmet such as a motorcycle so as to cover the front of the face. By attaching a thin film portion, which is a light transmission restricting portion, to a certain lens portion, a light transmission restricting member may be used.

[0035]

As described above, according to the present invention, both the function of correcting visual acuity and the function of blocking ultraviolet rays can be provided. Therefore,
When both functions are required, it is not necessary to prepare two types, and only one type is sufficient, which is convenient for carrying and the like. In addition, since a transparent material can be used for the light transmitting portion, there is no trouble in manufacturing, and the manufacturing cost can be reduced. Further, the light transmission limiting part is provided on the front or back surface of the light transmission part by sticking or vapor deposition, and since the light transmission restriction part is made of colored plastic or metal, manufacturing is simplified,
Manufacturing costs can also be kept low. Therefore, a light transmitting member having a function of correcting vision or a function of not correcting vision can be provided at low cost.

When the light transmission limiting part is provided on the surface of the light transmission part by sticking, the light transmission limiting part can be attached and detached. When necessary, the light transmission restriction part is stuck to the light transmission part to correct the visual acuity. In addition to providing both the function of blocking light and the like, and the function of blocking ultraviolet rays, only the function of correcting visual acuity can be obtained by peeling off the light transmission restricting portion from the light transmitting portion when unnecessary. Therefore, the necessary functions can be obtained when needed without being affected by the use environment such as outdoors during the day and outdoors during the night, and there is no difficulty in using under any environment. .

Further, when the light transmission restricting portion is attached to the light transmitting portion, the light transmitting portion is covered with the light transmission restricting portion, so that the light transmitting portion is hardly damaged. Things.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire embodiment of an eyeglass lens according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a perspective view showing the entire thin film portion of the one shown in FIG. 1;

FIG. 4 is a sectional view taken along the line BB of the one shown in FIG. 3;

FIG. 5 is an explanatory view showing another embodiment of the spectacle lens according to the present invention, showing an intermediate state of the formation of the thin film portion.

FIG. 6 is an explanatory diagram showing a state in which the formation of the thin film portion of FIG. 5 is completed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lens for eyeglasses (light transmission member) 2 ... Lens part (light transmission part) 3 ... Thin film part (light transmission restriction part) 4 ... Body part 5 ... Adhesive part 6 ... Coated paper 6a ... Main body 6b ... membrane 7 ... cut

Claims (4)

[Claims] 1. A light-transmitting portion made of plastic or glass, and a light-transmitting restricting portion having a sheet-like shape provided on at least one surface of the light-transmitting portion and transmitting light more hardly than the light-transmitting portion. A light transmitting member characterized by the above-mentioned. 2. The light transmitting member according to claim 1, wherein the light transmission restricting portion is made of colored plastic or metal. 3. The light transmitting member according to claim 1, wherein said light transmission restricting portion is provided on said lens portion by sticking and is detachable. 4. The light transmitting member according to claim 1, wherein the light transmission restricting portion is provided on the lens portion by vapor deposition.