JP2023065718A - Method for using glasses and method for manufacturing glasses - Google Patents

Abstract

To realize glasses that do not slip when a wearer of the glasses is sleeping on the wearer's back or is sleeping on the wearer's side and do not give the wearer pain in the face.SOLUTION: The present invention relates to glasses 10 which are useful for a user to read a book or watch a smartphone while lying. The length between the edge parts in the horizontal direction of a frame and a lens is smaller than the distance C between the corners of the eyes of a wearer. The glasses do not slip when a wearer of the glasses is sleeping on the wearer's back or is sleeping on the wearer's side and do not give the wearer pain in the face.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to eyeglasses that are convenient when looking at a book or a smartphone while lying down.

You may have to wear glasses when you lie down and look at a book or smartphone when you go to bed. However, when I wear glasses and sleep on my side, the temples of the glasses hit my face and hurt. Also, when the user turns from the sideways position to the back position, the eyeglasses may shift and the distance between the eyes may not match.

Patent Literature 1 describes a configuration in which temples are eliminated and eyeglass frames are attached to the face with an adhesive material so that reading can be performed while lying down.

Patent Document 1: Japanese Patent No. 6162450

The inventor of the present invention also followed almost the same experimental process as described in Patent Document 1 until reaching the final form, but all of them failed. Based on the experience, it was found that the eyeglasses described in Patent Document 1 have a problem that the ear-side end portion of the frame of the eyeglasses hits the pillow and shifts when the person sleeps sideways. In addition, since the frame of the spectacles is simply adhered to the face with an adhesive material, the spectacles tend to shift due to deterioration over time if the wearer is repeatedly turned sideways or on their backs, and there is also the problem that the spectacles must be adjusted each time. Furthermore, the use of an adhesive material to adhere to the face poses the problem of causing rashes and allergies for those with sensitive skin.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide spectacles that do not slip easily even when the user lies on his or her back or sideways, and that does not cause pain in the face.

In order to solve the above problems, the present invention provides spectacles that are convenient for viewing a book or a smartphone while lying down, wherein the length between the left and right ends of the frame and the lenses is at least for both eyes of the person wearing the spectacles. To provide spectacles characterized by being shorter than the length between the outer corners of the eyes.

With this configuration, it is possible to realize spectacles that do not slip easily even when lying on one's back or sideways and do not cause pain in the face.

The spectacles may have projections for maintaining the distance from the inner principal surface of the lens to the pupil.

With this configuration, the distance from the lens to the pupil can be kept constant even when lying on one's back.

In the spectacles, the protrusion may be a cover provided along the frame.

With this configuration, it is possible to maintain a constant distance between the lenses of the spectacles and the pupils, and to realize spectacles that are less likely to shift.

The eyeglasses may have a string-shaped temple.

With this configuration, it is possible to realize spectacles that do not slip easily even when lying on one's back or sideways and do not cause pain in the face.

In the spectacles, the string-like temple may be made of an elastic material.

With this configuration, the frame and lenses of the spectacles can be adjusted and fixed according to the difference in the size of the face of each individual and the movement of the face when lying down so that the string is not too tight and does not slip. can.

The spectacles may have a configuration in which the upper and lower portions of the ear-side end portions of the lenses are rounded or tapered.

With this configuration, it is possible to realize spectacles that do not slip easily even when lying on one's back, sideways, or on one's stomach, and that do not cause pain in the face.

With the spectacles of the present invention, it is possible to realize spectacles that do not slip easily even when lying on one's back or sideways, and that do not cause pain in the face.

1 is a front view illustrating spectacles in Example 1 of the present invention; FIG. 1 is a perspective view illustrating spectacles in Example 1 of the present invention. FIG. It is a figure explaining the state when spectacles are put on in Example 1 of the present invention.

A spectacle 10 according to Example 1 of the present invention will be described with reference to FIGS. 1 to 3. FIG. FIG. 1 is a front view explaining spectacles in Example 1 of the present invention. FIG. 2 is a perspective view illustrating spectacles in Example 1 of the present invention. 3A and 3B are diagrams illustrating a state when a person wears spectacles according to the first embodiment of the present invention; FIG. (b) is a diagram illustrating the positional relationship between the spectacles and pupils in Example 1 of the present invention.

The spectacles 10 in Example 1 are composed of a frame 8, lenses 3 (3a, 3b) made of synthetic resin or glass, and temples 5 (5a, 5b) made of elastic rubber cords. The frame 8 can be made of any material such as synthetic resin, metal, or tortoiseshell. In the first embodiment, the temples 5 (5a, 5b) are made of elastic rubber cords, but they are not necessarily limited to this and can be changed as appropriate. For example, it may be made of a non-elastic material such as cotton string or synthetic resin, and any string-like material may be used. Desirably, the temples 5 (5a, 5b) are formed in the shape of a flat string, so that the face can be prevented from getting sore when lying on the side.

The frame 8 includes main rims 1 (1a, 1b) that support lenses 3 (3a, 3b) at the upper (forehead side), nose side, and lower (cheek side) portions, and lenses 3 (3a, 3b) at the ear side portion. It consists of side rims 2 (2a, 2b), nose pads 9 (9a, 9b) and bridge 4 that support the .

Here, the main rim 1a indicates the main rim for the left eye, and the main rim 1b indicates the main rim for the right eye. Similarly, side rim 2a, lens 3a, temple 5a, nose pad 9a, cover 7a, and stopper 6a are shown for the left eye, and side rim 2b, lens 3b, temple 5b, nose pad 9b, cover 7b, and stopper 6b are for the left eye. is shown.

The main rims 1 (1a, 1b) support the lenses 3 (3a, 3b) at the upper, nasal side and lower portions, and widen at the upper and lower portions and have a substantially arc shape near the nasal side. Although the part has a shape in which the upper part and the lower part are connected, it is not necessarily limited to this and can be changed as appropriate. For example, the overall shape may be approximately arcuate, rectangular, or hexagonal, and it is desirable that at least the distance between the upper portion and the lower portion be large enough to cover the pupil. As a result, the main rim 1 (1a, 1b) can be prevented from hitting the hollow of the eye or getting into the eye.

The side rims 2 (2a, 2b) support the lenses 3 (3a, 3b) on the ear side, and have a rounded shape that widens in the middle and gently narrows in the upper and lower portions. It is not limited to this and can be changed as appropriate. For example, the top and bottom may be more rounded than shown in FIG. 1, or the top and bottom may be tapered narrower. The top and bottom of the side rims 2 (2a, 2b) are rounded or tapered so that the side rims 2 (2a, 2b) hit the pillow and the spectacles 10 slip even when the spectacles 10 are worn sideways. prevent.

In the first embodiment, the frame 8 has the side rims 2 (2a, 2b). For example, the frame may be configured without one or both of the left and right side rims 2, and at least the upper and lower portions of the ear-side end portions of the frame and lens may be rounded or tapered.

Further, in Example 1, the main rim 1 (1a, 1b) and the side rim 2 (2a, 2b) are joined with an adhesive at the upper and lower portions of the ear-side end, but this is not necessarily the case. can be changed as appropriate. For example, the main rim 1 (1a, 1b) and the side rim 2 (2a, 2b) may be fitted together, or the main rim 1 (1a, 1b) and the side rim 2 (2a, 2b) may be integrated. may be

A nose pad 9 (9a, 9b) is provided on the nose side of the main rim 1 (1a, 1b) to support the frame 8 with the nose. Also, the main rim 1a and the main rim 1b are connected by a bridge 4 above the nose.

The covers 7 (7a, 7b) are provided along the main rims 1 (1a, 1b) so as to come into contact with the face. The covers 7 (7a, 7b) are provided to maintain a predetermined distance between the inner principal surfaces of the lenses 3 (3a, 3b) and the pupils I (Ia, Ib). Also, having the nose pads 9 (9a, 9b) makes it possible to keep the distance from the inner principal surfaces of the lenses 3 (3a, 3b) to the pupils constant. The predetermined distance (distance between corneal vertices) between the lens and the pupil in Example 1 is set to 12 mm. This allows the widest field of view.

In Example 1, the distance between the corneal vertices was set to 12 mm, but it is not necessarily limited to this and can be changed as appropriate. For example, it may be about 10 mm or 11 mm, which is slightly shorter than 12 mm, or about 13 mm.

In addition, in Example 1, the cover 7 (7a, 7b) is provided along the main rim 1 (1a, 1b) so as to be in contact with the face in order to keep the distance between the lens and the pupil at a predetermined distance. , is not necessarily limited to this, and can be changed as appropriate. For example, a cover 7 (7a, 7b) may be provided along a portion of the main rim 1 (1a, 1b), or a plurality of bar-like protrusions may be provided on each of the main rims 1a and 1b. At this time, the ends may be made larger or rounder so that the rod-like projections do not get into the eyes and cause injury.

The temples 5 (5a, 5b) are made of elastic rubber cords like those used in masks. As a result, even if the wearer wears the spectacles 10 and sleeps sideways, the temples do not dig into the face and cause pain. Moreover, stoppers 6 (6a, 6b) are provided so that the length of the rubber cord can be adjusted according to the size of each person's face. The stoppers 6 (6a, 6b) are made of synthetic resin and have two holes through which rubber strings pass, and the length can be adjusted by pulling the ends of the rubber strings. Frame 8 side ends of temples 5 (5a, 5b) made of rubber cords are connected to covers 7 (7a, 7b) through holes. Although the stopper 6 (6a, 6b) is configured to have two holes, it is not necessarily limited to this and can be changed as appropriate. For example, a clip may be used to stop the rubber cord.

In the first embodiment, the ends of the temples 5 (5a, 5b) made of rubber cords on the side of the frame 8 are connected to the covers 7 (7a, 7b) by opening holes in the covers 7 (7a, 7b). can be changed as appropriate. For example, it may be configured to be connected by screws, or configured to be hooked by providing projections on the main rim 1 (1a, 1b) and the side rims 2 (2a, 2b). As a result, the rubber cord can be easily replaced when it is stretched due to deterioration over time.

The lenses 3 (3a, 3b) may be for presbyopia, for myopia, or for hyperopia, as long as a book or a smartphone can be seen.

Next, the length between the ear-side ends of the left and right lenses 3 (3a, 3b) will be described. When you sleep and look at a book or a smartphone, the field of view may be limited. (3a, 3b) and the side rims 2 (2a, 2b) can be prevented from coming into contact with a pillow or the like and slipping off the face.

As a result of experiments over a year or more, it was found that the length between the left and right ends of the frame and the lenses should be at least shorter than (less than) the length between the corners of the eyes of the person wearing the spectacles ( less than C in FIG. 3(b)). As a result, even if you sleep on your back or side, you can read books and smartphones without your glasses slipping or hurting your face. More desirably, the length between the left and right ends of the lens is longer than the length between the left and right outer ends of the iris (B in FIG. 3(b)) when looking straight ahead, It is sufficient if it is less than the length between the eyes. FIG. 3A shows an image of the spectacles 10 in that state. Even for people who use one eye mainly to see things, a sufficient field of vision can be secured if the eye is 6.5 mm longer than the outer edge of the iris. (24-11)/2=6.5 mm for one side of the white of the eye).

In addition, if the length between the left and right ends of the lens is at least less than the distance between the corners of the eyes of the person wearing the spectacles, even if the side rims 2 (2a, 2b) are provided, when sleeping sideways. The spectacles 10 do not shift and the face does not hurt.

It is said that the average interpupillary distance (A in FIG. 3B) is 64 mm for Japanese men and 62 mm for Japanese women. Then, in the case of an average Japanese man, the length between the left and right ends of the lens is at least 75 mm, which is the length between the outer ends of the iris (the size of the iris of Japanese people is about 11 to 12.5 mm). If the interpupillary distance is plus 11 mm), and the length to the outer corner of both eyes is less than 88 mm (if the distance from the outer edge of the iris to the outer corner of the eye is 6.5 mm on each side) If the size of the glasses is the same, the glasses can be made into glasses that do not slip easily even when lying on one's back or sideways, and do not cause pain in the face.

In the case of an average Japanese male, the most desirable length between the left and right ends of the lens is an intermediate length that is equal to or greater than the length between the outer ends of the iris and less than the length to the corners of both eyes81. 5 mm. When the side rims 2 (2a, 2b) are provided, the distance between the side rims 2 (2a, 2b) (that is, the distance between the left and right frames) should be less than 88 mm between the corners of the eyes. (See Table 1.)

In the case of an average Japanese woman, at least the length between the left and right ends of the lens is 73 mm or more, which is the length between the outer ends of the iris (when the interpupillary distance is 62 mm plus 11 mm, as described above). ), and the length to the outer corner of both eyes is less than 86 mm (assuming that the distance from the outer edge of the iris to the outer corner of the eye is 6.5 mm on each side, as described above). The spectacles do not easily shift even when the wearer sleeps sideways, and the face does not hurt.

In the case of an average Japanese woman, the most desirable length between the left and right ends of the lens is an intermediate length that is equal to or greater than the length between the outer ends of the iris and less than the length to the corners of both eyes79. 5 mm. In addition, when the side rims 2 (2a, 2b) are provided, the distance between the side rims 2 (2a, 2b) should be less than 86 mm between the corners of the eyes. (See Table 1.)

Table 1 (unit: mm)
Interpupillary distance A Distance between iris edges B Distance between outer corners of eyes C Lens length between left and right edges Male average 64 75 88 81.5 Male large 70 81 94 87.5 Female average 62 73 86 79.5 Female small 56 67 80 73 .5
Note) ・Distance between the outer corners of the eye C = Distance between the edges of the iris B + 13 (when the distance from the outer edge of the iris to the inner corner of the eye is 6.5 mm on each side) ・Lens length between the left and right edges = Distance between the edges of the iris B + 13/2 (Intermediate length of BC)

For children and foreigners, the length between the left and right ends of the lens may be appropriately set. In other words, the distance between the outer edges of the iris and the distance between the outer corners of the eye can be estimated from the distance between the pupils of the person who wears the glasses, and spectacles having an ideal lens length between the edges in the left-right direction can be produced. That is, the spectacles have a lens length between the left and right ends that is equal to or greater than the distance between the outer ends of the irises on both sides of the wearer and less than the distance from the outer ends of the irises of both eyes to the corners of the eyes.

Thus, in Example 1, the spectacles are convenient for reading a book or a smartphone while lying down, and the length between the left and right ends of the frame and the lenses is at least the corner of the eyes of the person wearing the spectacles. Spectacles characterized by less than the length between them can be realized.

The spectacles of the present invention can be widely applied to fields where healthy people or people with lumbar spinal canal stenosis, etc., who are comfortable to lie down but cannot sleep on their backs, read books or smartphones while lying down.

1 (1a, 1b): main rim 2 (2a, 2b): side rim 3 (3a, 3b): lens 4: bridge 5 (5a, 5b): temple 6: stopper 7 (7a, 7b): cover 8: frame 9 (9a, 9b); nose pad 10: eyeglasses I (Ia, Ib): pupil J (Ja, Jb): outer corner of the eye A: interpupillary distance B: distance between the outer ends of the iris C: distance between the outer corners of the eye

In order to solve the above problems, the present invention is a method of using glasses that is convenient for looking at a book or a smartphone while sleeping,
To provide a method for using spectacles characterized by wearing spectacles in which the length between the left and right ends of a frame and lenses is at least less than the length between the corners of both eyes .

With this configuration, it is possible to use the spectacles so that the spectacles do not slip even when lying on one's back or sideways, and the face does not hurt.

A method of using spectacles, comprising a protrusion for maintaining a distance from the inner principal surface of the lens to the pupil ,
The protrusion may be configured to be worn by spectacles, which are covers provided along the frame .

With this configuration, the distance between the lens of the spectacles and the pupil can be kept constant, and the spectacles can be used in a way that the spectacles are less likely to shift .

In the method of using spectacles, the upper and lower portions of both ear-side end portions of the lenses may be rounded or tapered .

With this configuration, it is possible to realize spectacles that do not slip easily even when lying on one's back, sideways, or on one's stomach, and that do not cause pain in the face .

In the method of using spectacles, the temple may be configured to wear spectacles having a string-like temple made of an elastic material .

With this configuration, the frame and lenses of the spectacles can be adjusted and fixed according to the difference in the size of the face of each individual and the movement of the face when lying down so that the string is not too tight and does not slip. can.

Further, in order to solve the above problems, the present invention provides a method for manufacturing eyeglasses that is convenient for reading a book or a smartphone while lying down,
An interpupillary distance derivation step of deriving an interpupillary distance A of a target person;
an iris outer edge distance calculation step of calculating an iris outer edge distance B by adding a predetermined number a to the interpupillary distance A derived in the interpupillary distance derivation step;
a iris outer edge distance calculation step of calculating a iris outer edge distance C by adding a predetermined number b to the iris outer edge distance B calculated in the iris outer edge distance calculation step;
a spectacle making step of making spectacles in which the length between the left and right ends of the frame and the lens is less than the distance C between the outer corners of the eyes calculated in the above-mentioned distance between the outer corners of the eyes C;
To provide a method for manufacturing spectacles characterized by comprising:

With this configuration, it is possible to use the spectacles so that the spectacles do not slip even when lying on one's back or sideways, and the face does not hurt .

In the spectacle manufacturing method, the predetermined number a may be 11 mm and the predetermined number b may be 13 mm .

With this configuration, spectacles suitable for average Japanese adults can be manufactured .

Claims (6)

These glasses are convenient for reading books and smartphones while sleeping,
Spectacles, characterized in that the length between the left and right ends of the frame and the lenses is at least less than the length between the corners of the eyes of the wearer of the spectacles. 2. The spectacles according to claim 1, further comprising projections for maintaining a distance from the inner principal surface of the lens to the pupil. 3. The spectacles according to claim 2, wherein the protrusion is a cover provided along the frame. 4. The spectacles according to any one of claims 1 to 3, wherein upper and lower portions of the lenses on the ear side are rounded or tapered. The spectacles according to any one of claims 1 to 4, characterized in that the temples are string-shaped. 6. The spectacles according to claim 5, wherein said string-like temple is made of an elastic material.

Images