JP7034241B1 - Eyeglass shield for visual acuity measurement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spectacle shield that can be easily worn and does not easily damage a spectacle frame or a lens when measuring visual acuity while wearing spectacles. SOLUTION: This is a spectacle shield for shielding one of the left and right spectacle lenses 51 when measuring eyesight with the spectacles 50 on, and covers the front side 51f of the spectacle lens 51 at the time of use. The portion 10 is laid horizontally between the front side 51f and the rear side 51r of the spectacle lens 51 above the spectacle lens 51 and the hanging portion 20 hung on the upper part of the spectacle 50 on the rear side 51r of the spectacle lens 51. It has a connecting portion 30 that connects the shielding portion 10 and the hanging portion 20, and the shielding portion 10, the hanging portion 20, and the connecting portion 30 form a space S1 in which the lower part is open in a free state, and the space S1 is formed. The space S1 allows the connecting portion 30 to be placed on the spectacles 50 from above with respect to the spectacles 50. [Selection diagram] Fig. 1

Description

The present invention relates to a spectacle shield for visual acuity measurement . More specifically, the present invention relates to a visual acuity measuring spectacle shield for shielding one of the left and right spectacle lenses when the visual acuity is measured while wearing spectacles.

Generally, in ophthalmology, in order to confirm whether the spectacles used by spectacle users such as patients are appropriate, the left and right eyes are shielded with the spectacles on, and the visual acuity is measured using a visual acuity chart or the like. It is carried out.

As a tool for shielding each of the left and right eyes while wearing glasses, the eye shield 100 as seen in Non-Patent Documents 1 and 3 and the eyeglass shield as seen in Non-Patent Documents 2 and 4. 200 is known.

The eyeglass shield 100 is applied by the eyeglass user himself / herself from above the eyeglasses for each of the left and right eyes, and the visual acuity is measured separately for the right and left eyes.

In such an eye shield 100, since the spectacle user himself puts it on the spectacles, some users such as young spectacle users cannot shield one eye of the spectacles well and may see through a gap. Therefore, accurate measurement may not be expected.

Since the spectacle shield 200 is attached by the examiner to the upper part of one eye of the spectacles such as a patient by sandwiching it with a clip 201, the spectacle lens one eye can be satisfactorily shielded and accurate visual acuity measurement becomes possible. ..

However, since the eyeglass shield 200 is attached to the upper part of one eye of the eyeglass by sandwiching it with a clip 201, it has the following drawbacks.
1. 1. Since it sandwiches the eyeglass frame and lens, it is easy to damage the eyeglass frame and lens.
2. 2. Although the clip 201 is covered with the vinyl tube 202, if the vinyl tube 202 becomes old and deteriorates, and is damaged, displaced, or detached, the metal fittings of the clip are exposed and directly hit the lens, and the lens is used. There is a risk of scratching the surface.
3. 3. If the upper part of the spectacle frame is thick and thick, or if the frame is decorated, it may not be easy to attach.
4. When removing the spectacle shield 200 from the spectacles, if the clip 201 is weakly opened, the spectacles may be caught (pulled) and displaced.

"Eye shield" Internet <URL: https://www.futaba-ltd.co.jp/item/eyesight01/> "Shielder for glasses" Internet <URL: https://www.futaba-ltd.co.jp/item/eyesight04/>

An object to be solved by the present invention is to provide a spectacle shield for visual acuity measurement that can be easily worn and does not easily damage the spectacle frame or the lens when the visual acuity is measured while wearing the spectacles.

In order to solve the above problems, the eyeglass shield for visual acuity measurement of the present invention is used.
It is a spectacle shield for visual acuity measurement to shield either the left or right spectacle lens when measuring the visual acuity with the spectacles on.
A shield that covers the front side of the spectacle lens during use,
A hanging part that can be hung on the upper part of the spectacles on the rear side of the spectacle lens during use,
A connecting portion that is laid horizontally between the front side and the rear surface side of the spectacle lens and connects the shielding portion and the hanging portion above the spectacle lens during use.
A knob portion provided on the upper part of the shielding portion and extending upward from the upper portion of the hanging portion, and a knob portion.
Have,
A space is formed in which the lower part is open in a free state by the shielding portion, the hanging portion, and the connecting portion, and in the space, the connecting portion can be placed on the spectacles from above with respect to the spectacles by pinching the knob portion. As well as being a space
When the connecting portion) is placed on the spectacles, the lower portion of the shielding portion abuts on the frame of the spectacle lens to be supported on the spectacles.

Since this eyeglass shield for visual acuity measurement has the above configuration, the following effects can be obtained.
When measuring eyesight while wearing spectacles, for example, the examiner holds the spectacles shield for visual acuity measurement so that the front side of the spectacle lens on the side to be shielded is covered with the shielding portion, and the spectacle lens. It can be attached to the spectacles by placing the connecting portion on the spectacles from above so that the hanging portion hangs on the rear surface side, and one eye of the spectacles can be covered with the shielding portion to measure the visual acuity. ..

Then, a space is formed in which the lower part is open in a free state by the shielding portion, the hanging portion, and the connecting portion, and the space becomes a space in which the connecting portion can be placed on the spectacles from above with respect to the spectacles. Therefore, the eyeglass shield for visual acuity measurement of the present invention can be easily attached only by placing it on the upper part of the eyeglasses.

Also, unlike conventional shields, it is not configured to be clipped, so it does not easily damage the spectacle frame or lens.

As described above, according to the visual acuity measuring spectacle shield of the present invention, there is an effect that the spectacle frame and the lens are not easily damaged when the visual acuity is measured while wearing the spectacles.
Moreover, since it is placed on the upper part of the spectacles instead of being clipped, even if the upper part of the spectacle frame is thick and thick or the frame is decorated, it can be easily attached as compared with the conventional case.
In addition, since it is placed on the upper part of the glasses instead of being clipped, there is no risk of the glasses being hooked (pulled) and displaced because it is only necessary to raise them upward when removing them from the glasses.
Further, in the conventional shield, the opening / closing operation of the clip at the time of putting on and taking off may give some fear to the spectacle wearer such as a patient, but according to the present invention, there is no possibility of giving such fear. (At least less likely to give).

In this eyeglass shield for visual acuity measurement ,
The connecting portion may be configured to be formed of two rod-shaped bodies provided at intervals in the left-right direction.
With this configuration, when attached to the spectacles, the spectacle shield for visual acuity measurement is placed on the upper part of the spectacles at two points by the two rod-shaped bodies, so that it is satisfactorily placed on the upper part of most spectacles. Can be placed.

In this eyeglass shield for visual acuity measurement ,
At least the contact portion of the connecting portion with the spectacles may be provided with a non-slip portion formed of a soft member.
With this configuration, the non-slip portion of the connecting portion allows the eyeglass shield for visual acuity measurement to be placed on the upper part of the eyeglasses in a stable state.

In this eyeglass shield for visual acuity measurement ,
The connecting portion may be configured to include a tube made of a soft member and a bolt inserted into the tube.
With this configuration, the two rod-shaped bodies and the non-slip portion on the surface thereof can be easily configured, and the distance between the shielding portion and the hanging portion can be adjusted by the bolt.

In this eyeglass shield for visual acuity measurement ,
The grip portion may be configured to be a thin plate-shaped grip portion extending upward from the upper portion of the hanging portion at the upper portion of the shielding portion .
With this configuration, the spectacle shield for visual acuity measurement can be easily attached to and detached from the spectacles by pinching the knob.

It is a figure which shows the embodiment of the eyeglass shield for visual acuity according to this invention, (a) is a front view, (b) is a right side view, (c) is a rear view, (d) is a front view which shows the use state. FIG. 1 (e) is a schematic right side view of FIG. (D). The exploded right side view of the same embodiment. The figure which shows the conventional example. The figure which showed the front and back of another conventional example at the same time.

Hereinafter, embodiments of the eyeglass shield for visual acuity measurement according to the present invention will be described with reference to the drawings. In each figure, the same parts or corresponding parts are designated by the same reference numerals.

The eyeglass shield 1 for visual acuity measurement according to the embodiment shown in FIG. 1 is
It is a spectacles shield for visual acuity measurement for shielding one of the left and right spectacle lenses 51 (L, R) when measuring the visual acuity with the spectacles on.
A shielding portion 10 that covers the front side 51f of the spectacle lens 51 during use,
A hanging portion 20 that is hung on the upper part of the spectacles 50 on the rear surface side 51r of the spectacle lens 51 during use.
A connecting portion 30 that is laid horizontally between the front side 51f and the rear side 51r of the spectacle lens 51 and connects the shielding portion 10 and the hanging portion 20 above the spectacle lens 51 during use.
have.
A space S1 in which the lower part is open in a free state is formed by the shielding portion 10, the hanging portion 20, and the connecting portion 30, and the connecting portion 30 can be placed on the spectacles 50 from above with respect to the spectacles 50. It is a space S1 (FIG. 1 (e)).

Since the visual acuity measuring eyeglass shield 1 has the above configuration, the following effects can be obtained.
When measuring the spectacles while wearing the spectacles 50, for example, an examiner (not shown) holds the spectacle shield 1 for spectacles for measuring the spectacles, and the spectacle lens 51 on the side to be shielded (FIGS. 1 (d) (e). ), The front side 51f of the left spectacle lens 51 (L)) is covered with the shielding portion 10, and the hanging portion 20 is hung on the rear side 51r of the spectacle lens 51 from above with respect to the spectacle 50. By placing the connecting portion 30, it can be attached to the spectacles 50 as shown in FIGS. 1 (d) and 1 (e), and one eye (51 (L)) of the spectacles 50 is covered with the shielding portion 10 to measure the visual acuity. It can be performed.

Then, a space S1 whose lower portion is open in a free state is formed by the shielding portion 10, the hanging portion 20, and the connecting portion 30, and the space S1 places the connecting portion 30 on the spectacles 50 from above with respect to the spectacles 50. Since it is a space S1 that can be placed, the eyeglass shield 1 for visual acuity measurement can be easily attached only by placing it on the upper part of the eyeglasses 50. Here, it is said that "a space S1 whose lower part is open in a free state is formed" because the lower part is opened when the clip is opened even in the conventional shield (FIG. 4). This is to exclude.

Unlike the conventional shield (FIG. 4), the visual acuity measuring spectacle shield 1 is not configured to be sandwiched by clips, so that the spectacle frame 52 and the lens 51 are not easily damaged.

As described above, according to the visual acuity measuring spectacles shield 1, when the visual acuity is measured with the spectacles 50 worn, the effect that the spectacles frame 52 and the lens are not easily damaged can be obtained.

Moreover, since it is placed on the upper part of the spectacles 50 instead of being clipped, even if the upper part of the spectacle frame 52 is thick and thick or the frame is decorated, it is easier to attach than before. be able to.

Further, since it is placed on the upper part of the spectacles 50 instead of being clipped, it is only necessary to raise it upward when removing it from the spectacles 50. Therefore, there is no risk of hooking (pulling) the glasses 50 and shifting them.

Further, in the conventional shield, the opening / closing operation of the clip 201 at the time of attachment / detachment may give some fear to the user (examinee) of the eyeglasses 50 such as a patient . According to the spectacle shield 1, there is no risk of giving such fear (at least, the risk of giving is reduced).

As shown in FIG. 1 (c) and the like, the connecting portion 30 is formed of two rod-shaped bodies provided at intervals in the left-right direction.

With this configuration, when attached to the spectacles 50, as shown in FIG. 1 (d), the spectacle shield 1 for visual acuity measurement is 2 on the upper part of the spectacles 50 by the two rod-shaped bodies (30, 30). Since it is placed at a point, it can be placed on the upper part of most of the spectacles 50 in a well-stabilized state.

A non-slip portion 32 formed of a soft member (rubber, elastomer, etc.) is provided at least at the contact portion of the connecting portion 30 with the eyeglasses 50.

With this configuration, the non-slip portion 32 of the connecting portion 30 allows the visual acuity measuring spectacle shield 1 to be stably placed on the upper portion of the spectacles 50. That is, it becomes difficult for the eyeglass shield 1 for visual acuity measurement to move left and right on the eyeglass frame 52.

As shown in FIG. 2, the connecting portion 30 includes a tube 32 made of a soft member and a bolt 31 inserted into the tube 32.

With this configuration, the two rod-shaped bodies (30, 30) and the non-slip portion (32) on the surface thereof can be easily configured, and the distance W1 between the shielding portion 10 and the hanging portion 20 by the bolt 31 ( FIG. 1 (b)) can also be adjusted.

A knob portion 11 extending upward from the upper portion of the hanging portion 20 is provided on the upper portion of the shielding portion 10.

With this configuration, the spectacle shield 1 for visual acuity measurement can be easily attached to and detached from the spectacles 50 by pinching the knob portion 11.

The shielding portion 10 is arbitrary as long as it can cover the front side 51f of the spectacle lens 51 at the time of use, but a circular or elliptical shape in front view is suitable.
The shielding portion 10 of this embodiment is composed of a substantially circular thin plate having a knob portion 11 integrally at the upper portion.
As the size of the shielding portion 10, any size can be adopted as long as it can satisfactorily shield one eye of the spectacles and the visual acuity chart or the like cannot be seen from the gap.

The hanging portion 20 may have any shape as long as it can be hung on the upper part of the spectacles 50 on the rear surface side 51r of the spectacle lens 51 at the time of use.
The hanging portion 20 of this embodiment is formed of an inverted U-shaped thin plate so as to avoid the eye portion of the spectacle wearer.

If the connecting portion 30 is laid horizontally above the spectacle lens 51 at the time of use between the front side 51f and the rear side 51r of the spectacle lens 51 to connect the shielding portion 10 and the hanging portion 20. Any shape can be adopted. Not limited to a rod shape, it can also be a plate shape.

The shielding portion 10, the hanging portion 20, and the connecting portion 30 can all be made of an appropriate material, for example, synthetic resin, thick paper, or the like. Desirably, it can be made of a soft synthetic resin, a hard silicon material (including silicon rubber), rubber or the like.
The shielding portion 10, the hanging portion 20, and the connecting portion 30 can be integrally formed of a synthetic resin or the like.

When the connecting portion 30 includes a tube 32 made of a soft member and a bolt 31 inserted into the tube 32 as in this embodiment, the tube 32 is composed of a rubber tube and a silicon rubber tube. be able to.
In FIG. 1 and the like, 33 is a cap nut to be coupled to the tip of the bolt 31.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be appropriately modified within the scope of the gist of the present invention. for example,

When the connecting portion 30 is integrally formed with the shielding portion 10 and the hanging portion 20, the bolt 31 and the cap nut 33 are not required.

In FIGS. 1 (d) and 1 (e), the visual acuity measuring spectacle shield 1 is placed on the frame 52 of the spectacles 50, but when the spectacles have no rim, it is placed on the lens 51.

In this embodiment, the non-slip portion is made of a tube 32 made of a soft material, but the non-slip portion may be provided only at the lower part of the connecting portion 30 which is a contact portion with the eyeglasses. In this case, a soft material (for example, a sheet) can be adhered or attached, or in the case of integral molding, it can be formed by two-color molding.

1: Eyeglass shield for visual acuity measurement 10: Shield 20: Hanging part 20
30: Connecting part 30
31: Bolt 32: Tube S1: Space

Claims (5)

It is a spectacles shield for visual acuity measurement for shielding one of the left and right spectacle lenses (51L, 51R) when measuring the visual acuity with the spectacles (50) on.
A shielding portion (10) that covers the front side (51f) of the spectacle lens (51) during use,
A hanging portion (20) that can be hung on the upper part of the spectacles on the rear surface side (51r) of the spectacle lens (51) during use.
At the time of use, above the spectacle lens (51), it is laid horizontally between the front side (51f) and the rear side (51r) of the spectacle lens (51), and the shielding portion (10) and the hanging portion (20). With the connecting portion (30) that connects the
A knob portion (11) provided on the upper portion of the shielding portion (10) and extending upward from the upper portion of the hanging portion (20).
Have,
The shielding portion (10), the hanging portion (20), and the connecting portion (30) form a space (S1) in which the lower part is open in a free state, and the space (S1) is the grip portion (11). It is a space (S1) that allows the connecting portion (30) to be placed on the spectacles (50) from above with respect to the spectacles (50).
When the connecting portion (30) is placed on the spectacles (50), the lower portion of the shielding portion (10) comes into contact with the frame of the spectacle lens (51) and is supported on the spectacles. Eyeglass shield for measurement. In claim 1,
The connecting portion (30) is a visual acuity measuring eyeglass shield that is formed of two rod-shaped bodies (30) provided at intervals in the left-right direction. In claim 1 or 2,
A spectacles shield for visual acuity measurement, characterized in that a non-slip portion formed of a soft member is provided at least at a contact portion of the connecting portion (30) with the spectacles (50). In claim 2,
The connecting portion (30) is a visual acuity measuring eyeglass shield that includes a tube (32) made of a soft member and a bolt (51) that is inserted into the tube (32). In any one of claims 1 to 4,
The spectacle shielding tool for visual acuity measurement is characterized in that the knob portion (11) is a thin plate-shaped knob portion (11) extending upward from the upper portion of the hanging portion (20) at the upper portion of the shielding portion (10). ..

Images