JP2001194630A - Rimless spectacles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide rimless spectacles of a type for holding lenses without rims which make connecting parts obscure when the connecting parts of the lens holding members of spectacle lenses are connected and which have excellent fashionability. SOLUTION: The rimless spectacles have the spectacle lenses which have the hole parts pierced in a thickness direction or at marginal surfaces and the lens holding members which hold the spectacle lenses and have the connecting parts inserted into hole parts and fastened by adhesives. The spectacle lenses and connecting parts described above are approximately the same in colors.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to rimless spectacles, and more particularly to rimless spectacles of the type that holds a lens without screws.

[0002]

2. Description of the Related Art Conventionally, in rimless eyeglasses without a rim, a lens holding member such as a bridge or a yoke is fixed to an eyeglass lens with an adhesive. FIG. 9 is an example showing a conventional fixing structure. In this structure, a lens hole 1a is formed on the edge surface of the spectacle lens 1, and this lens hole 1a
After the adhesive is filled, the lens holding member 2 is fixed to the spectacle lens 1 by inserting the connecting portion 2a formed integrally with the lens holding member 2 into the lens hole 1a.

[0003]

However, in the conventional frameless spectacles, since the lens holding member 2 such as a bridge or a yoke is formed of a metal material such as titanium,
There is a problem that the connecting portion 2a of the lens holding member 2 inserted into the lens hole 1a of the spectacle lens 1 causes the spectacle lens 1 to feel strange.

That is, when viewed from the wearer of the frameless glasses, the connecting portion 2a made of metal appears and disappears in the field of view, and the user feels annoyance. In addition, when viewed from a third party, the connecting portion 2a made of metal in the eyeglass lens 1
Will look very noticeable. SUMMARY OF THE INVENTION It is an object of the present invention to provide frameless eyeglasses in which a connecting portion of a lens holding member of a spectacle lens is inconspicuous and excellent in fashionability when connected.

[0005]

According to the first aspect of the present invention, there is provided a frameless spectacle lens having a hole formed in a thickness direction or an edge surface thereof, and holding the spectacle lens, inserting the hole into the hole, and bonding the lens. In the frameless eyeglasses provided with a lens holding member having a connecting portion fixed by an agent, the spectacle lens and the connecting portion are substantially the same color.

According to a second aspect of the present invention, there is provided the frameless spectacles according to the first aspect, wherein the connecting portion or the connecting portion and the lens holding member are made of a cured transparent resin. The frameless glasses according to claim 3 are claims 1 or 2
In the frameless eyeglasses according to the above item, the cured product includes a fibrous reinforcing member.

According to the fourth aspect of the present invention, there is provided the frameless glasses.
Alternatively, in the frameless eyeglasses according to 3, the eyeglass lens is obtained by curing a monomer having a compound having an epithio group as a main component.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a first embodiment of the frameless eyeglasses of the present invention. In the frameless spectacles, the inside of the pair of spectacle lenses 11 is connected via a bridge 13. One end of each of the pair of eyeglasses 15 is connected to the outside of the pair of spectacle lenses 11 (the side opposite to the portion where the bridge 13 is connected).

A temple 19 is connected to the other end of the yoke 15 via a hinge 17 so as to be openable and closable. FIGS. 2 and 3 show the spectacle lens 1 of the bridge 13 and the yoke 15 (hereinafter, these are collectively referred to as a lens holding member 21).
1 shows a detailed structure of a mounting portion to the first mounting portion. FIG. 2 is a diagram of the mounting portion when viewed from the front of the glasses, and FIG. 3 is a diagram of the mounting portion when the lens and the connection portion are viewed from the lens edge surface side.

In these figures, reference numeral 11 denotes a spectacle lens. In this embodiment, the spectacle lens 1
1 is made of a plastic lens, but glass can also be used. The material of the plastic lens is not particularly limited, and all high, medium, and low refractive index materials can be used.

[0012] Specifically, it is formed by curing a resin of polyurethane type, acrylic type, allyl type or the like. Further, those obtained by curing a monomer mainly containing a compound having an epithio group are also preferable. By using this, the lens thickness can be made thinner and lighter, and it is possible to obtain frameless glasses that are more comfortable to wear and excellent in design.

The monomer having a compound having an epithio group as a main component is preferably represented by the following general formula.

Embedded image In the formula, m is an integer of 1 to 6, and n is an integer of 0 to 4.

It is preferable that the epithio group has two or more epithio groups. In this embodiment, the spectacle lens 11 has a pair of edge holes 11b as lens holes on the edge 11a.
Are formed. The edge surface hole 11b has a circular cross section and is formed in parallel at a predetermined interval.

The connecting hole 21a of the lens holding member 21 for holding the spectacle lens 11 is provided in the edge hole 11b.
Is inserted. 4 and 5 show the details of the lens holding member 21. In the lens holding member 21, a pair of connecting portions 21a is formed integrally with the end face of the main body 21b so as to protrude.

The pair of connecting portions 21a are formed in a circular cross section corresponding to the pair of edge holes 11b formed in the spectacle lens 11. The connecting portion 21a is formed at the same interval as the pair of edge holes 21a, and can be inserted into the pair of edge holes 21a. In this embodiment, the lens holding member 21 is formed of the same white transparent resin as the spectacle lens 11.

Such transparent resins include PMMA, PS
(HI), AS, transparent ABS, PC, PMP, PAR,
Resins such as PSF and PVC can be used. In this embodiment, the transparent resin is mixed with a reinforcing fiber made of a transparent glass fiber. Then, as shown in FIG. 2, a pair of edge holes 11 b of the spectacle lens 11 is formed.
Is fitted with a pair of connecting portions 21a of the lens holding member 21, and is fixed by an adhesive.

The frameless glasses described above are manufactured as described below. That is, first, a pair of edge surface holes 11 b is formed in the edge surface of the spectacle lens 11. Then, the adhesive is filled in the edge surface hole 11b. This adhesive includes
Adhesives such as epoxy, acrylic, cyanoacrylate, anaerobic, and ultraviolet curable adhesives can be used, and it is preferable that the adhesive has the same color as the eyeglass lens 11.

Before the adhesive dries, the pair of connecting portions 2 of the lens holding member 21 for holding the spectacle lens 11 is formed.
The eyeglass lens 1a is inserted into the pair of edge holes 11b.
1 is fixed to the connecting portion 21a. In the frameless glasses described above, since the connecting portion 21a of the lens holding member 21 to be inserted into the edge surface hole 11b of the spectacle lens 11 is formed of a transparent resin, the connecting portion 21a is connected when the connecting portion 21a is connected to the spectacle lens 11. 21a is inconspicuous.

In the frameless glasses described above, the reinforcing fiber is mixed with the transparent resin to reinforce the connecting portion 21a. As a result, even if resin is used for the lens holding member 21, the connecting portion 21a does not break. Further, in the above-described frameless glasses, since the entire lens holding member 21 is formed of the transparent resin, the connecting portion 21a made of the transparent resin can be easily and reliably formed integrally.

FIG. 6 shows a second embodiment of the frameless glasses according to the present invention. In the frameless glasses, the inside of the pair of spectacle lenses 11 is connected via a bridge 33. One end of a yoro 35 is connected to the outside of each of the pair of spectacle lenses 11.

A temple 19 is connected to the other end of the yoke 35 via a hinge 17 so as to be openable and closable. FIGS. 7 and 8 show the spectacle lens 1 of the bridge 33 and the yoke 35 (hereinafter, these are collectively referred to as a lens holding member 41).
1 shows a detailed structure of a mounting portion to the first mounting portion. FIG. 7 is a cross-sectional view of the mounting portion viewed from the edge of the lens, and FIG. 8 is a schematic diagram of the mounting portion viewed from the front of the glasses.

In this embodiment, the spectacle lens 11 includes
As shown in FIG. 7, a thickness direction hole 11 e is formed to penetrate in the thickness direction of the spectacle lens 11. As shown in FIG. 8, the thick hole 11 e has a circular arc 11 h on each side.
Are formed in an elongated hole shape. As shown in FIGS. 7 and 8, the connecting portion 41 a of the lens holding member 41 that holds the spectacle lens 11 is fitted into the thickness direction hole 11 e of the spectacle lens 11.

The connecting portion 41a is connected to the lens holding member 41.
Of the main body 41b is bent at 90 degrees, and is formed integrally with the main body 41b. Also, this connecting portion 41
a has a cross-sectional shape corresponding to the thickness direction hole 11e, and can be inserted into the thickness direction hole 11e. The connecting portion 41a of the lens holding member 41 is fitted into the thickness direction hole 11e of the spectacle lens 11, and is fixed by an adhesive.

In this embodiment, the lens holding member 41
Is formed of a white transparent resin. In this embodiment, the transparent resin is mixed with a reinforcing fiber made of a transparent glass fiber. In the second embodiment of the frameless spectacles, since the connecting portion 41a and the main body portion 41b of the lens holding member 41 are formed of a transparent resin, the same effects as in the first embodiment can be obtained.

In the above-described embodiment, an example in which the connecting portions 21a and 41a are integrally formed with the lens holding members 21 and 41 has been described. However, the present invention is not limited to such an embodiment. They may be formed separately.
If the connecting portion is formed separately from the lens holding member and is connected to the lens holding member in a detachable state (for example, using a screw or the like), the connecting portion can be easily replaced. Various types of couplings can be exchanged.

Further, in the above-described embodiment, an example in which the reinforcing fibers are mixed into the entire lens holding members 21 and 41 has been described. However, the present invention is not limited to such an embodiment, and the connecting portions 21a and 41a are not limited thereto. Only the reinforcing fibers may be mixed.

[0028]

According to the present invention, the lens can be connected to the lens holding member without making the connecting portion of the lens holding member stand out. Thereby, the spectacle wearer can obtain a wider field of view, and can achieve an excellent wearing feeling.

Further, the frameless glasses of the present invention are in a state like glasses having no members such as connecting portions on the lens surface when the glasses are viewed from the front. This results in well-designed borderless glasses with no obstructions around the eyes.
Furthermore, if the material of the spectacle lens to be used is such that a thin lens can be obtained, it is possible to obtain lighter-weight eyeless eyeglasses with a clear eye.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a first embodiment of frameless glasses according to the present invention.

FIG. 2 is a front view showing details of a mounting portion of a lens holding member to the spectacle lens of FIG. 1;

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a front view showing the lens holding member of FIG. 2;

FIG. 5 is a side view of FIG. 4;

FIG. 6 is an explanatory view showing a second embodiment of the frameless glasses according to the present invention.

FIG. 7 is a cross-sectional view showing details of a mounting portion of a lens holding member to the spectacle lens of FIG.

FIG. 8 is a front view of FIG. 7;

FIG. 9 is a front view showing details of a mounting portion of a lens holding member to a conventional spectacle lens.

[Explanation of symbols]

 11 Eyeglass lens 11b Edge surface hole 11e Thickness direction hole 21, 41 Lens holding member 21a, 41a Connecting portion

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kenichi Yaguchi 2-10-8 Ryogoku, Sumida-ku, Tokyo F-term in Nikon Eyewear Co., Ltd. (reference) 4J002 BF001 BG001 CK021 DL006 FA046 GP00

Claims (4)

[Claims] 1. An eyeglass lens having a hole formed in a thickness direction or an edge surface thereof, and a lens holding member having a connecting portion which holds the eyeglass lens, is inserted into the hole, and is fixed by an adhesive. In the frameless spectacles provided, the spectacle lens and the connecting portion are substantially the same color. 2. The frameless glasses according to claim 1, wherein the connecting portion or the connecting portion and the lens holding member are formed of a cured resin of a transparent resin. 3. The edgeless glasses according to claim 1, wherein the cured product includes a fibrous reinforcing member. 4. The frameless spectacles according to claim 1, wherein the spectacle lens is obtained by curing a monomer having a compound having an epithio group as a main component.