JP2020184047A - Binocular loupe - Google Patents

Abstract

To provide a binocular loupe having high versatility and good wearability, and excellent in not only enlarged field of view but also normal field of view.SOLUTION: A binocular loupe 1 is configured to comprise: a frame 10 that has a nose hook part 11 that hangs on the user's nose, a pair of ear hook parts 13 that hang on the ears, and an under rim 12 that bulges downward and curves so as to extend along the cheekbones from the nose hook part to each of the pair of ear hook parts; and a pair of loupe bodies 20 respectively supported by the under rim on both sides of the nose hook part.SELECTED DRAWING: Figure 1

Description

The present invention relates to a binocular loupe.

As a conventional binocular loupe, a spectacle-integrated loupe (for example, see Patent Document 1) in which a loupe body is fitted in each of two lenses (carrier lenses) of spectacles, and an arm supporting a pair of loupe bodies. Has a locking tool such as a clip, and a spectacle apron type loupe that can be detachably attached to the frame of the spectacles with the locking tool can be mentioned (see, for example, Patent Document 2).

The loupe with integrated spectacles may be made to order by adjusting the mounting position and angle of the loupe body with respect to the carrier lens according to the user's eye width, eyesight, and required working distance, and selecting the lens magnification. Since there are many, it is not versatile and expensive. Further, since the loupe body fixed to the carrier lens is located in front of the user's eyes, there is a problem that a normal field of view, which is not a magnified field of view, is narrow and it is difficult to see an object in a situation where it is not magnified.

On the other hand, the spectacle apron type loupe often has a mechanism that can adjust the distance between the pair of loupe bodies according to the eye width, which has the advantage of high versatility, but because the center of gravity is located in front. When I was working with my head tilted so that my eyes were pointing downwards, my glasses sometimes slipped down and I sometimes felt the weight of the loupe as a burden. In addition, since the eyepiece lens is located between the eyepiece of the loupe body and the user's eye, the eyepiece is separated from the eye, and the loupe body itself enters the field of view, making it difficult to see the enlarged field of view and the loupe in front of the eye. Since the main body and the arm supporting the main body are in a suspended state, there is a problem that it is difficult to see an object in a normal field of view other than a magnified field of view.

Japanese Unexamined Patent Publication No. 2018-400121 Japanese Unexamined Patent Publication No. 2011-2642

Therefore, in view of the above circumstances, it is an object of the present invention to provide a binocular loupe that is highly versatile, has a good fit, and has a good normal field of view that is not a magnified field of view.

In order to solve the above problems, the binocular loupe according to the present invention
"The nose hook that hangs on the user's nose, the pair of ear hooks that hang on the ears, and the pair of ear hooks that hang from the nose hook are curved downward so as to extend along the cheekbones. With a frame that has an under rim,
Each is provided with a pair of loupe bodies supported by the under rim on both sides of the nose hook. "

Conventionally, with respect to a binocular loupe, it has been considered that the distance between a pair of loupe bodies must be "adjusted" according to the eye width (interpupillary distance) of the user. Further, in the manufacture of the conventional spectacle-integrated loupe, the loupe body has been adapted to the visual acuity of the user and the desired working distance. Contrary to the common sense of those skilled in the art, as a scene in which a binocular loupe is used, there is no problem even if the distance between the loupe bodies and the working distance are not strictly adjusted and set. I focused on not a few. In other words, for binocular loupes used in scenes where highly precise work such as surgical loupes is required to be performed in an upright posture, the distance between the loupe bodies can be adjusted to match the user's eye width. It is important to set the loupe body to adapt to the user's eyesight and the desired working distance. On the other hand, as a binocular loupe used for daily work and handicraft work, the benefit of increasing versatility is not greater than the disadvantage of abstracting such strict adjustments and settings. The present inventor thought.

The present invention has been made from the above viewpoint, and the loupe body is supported by the under rim on both sides of the nose hook. Since the pair of loupe bodies are located on both sides of the nose hook, even if the user's eye width is different, most people can fine-tune the position and angle of the nose hook with respect to the user's nose. It is possible to magnify through the loupe body. In addition, the working distance can be adjusted according to the posture of the user, and as a result of examination, the difference in the visual acuity of the user is determined by setting the lens magnification of the loupe body and the angle formed by the optical axes of each pair of loupe bodies. It was found that if the above is a general range, the working distance can be set to a range of 35 cm to 45 cm, which is not so different.

In the binocular loupe of this configuration, the under rim bulges downward and curves along the cheekbone of the user, so that the loupe body supported by the under rim is located below the eyes. Therefore, with the binocular loupe of this configuration, it is possible to magnify the field of view when the line of sight is directed downward, and when the field of view is directed to the front, the loupe body does not enter the field of view, which is not a magnified field of view. You can see things with (hereinafter sometimes referred to as "normal visual field" or "normal visual field").

The binocular loupe according to the present invention has the above configuration in addition to the above configuration.
It can be said that "the frame does not support a configuration corresponding to a spectacle lens".

In this configuration, the loupe body is supported by the under rim and is located below the eye, and since it does not have a configuration equivalent to a spectacle lens, there is nothing to block the front of the eye. Therefore, the field of view is usually extremely good even when the binocular loupe is worn. Here, the term "configuration corresponding to a spectacle lens" means that in addition to a spectacle lens having a visual acuity correction function, a protective lens having no visual acuity correction function and a lens-shaped shield are included. It is used in.

Since it does not have a configuration equivalent to a spectacle lens, unlike a conventional spectacle-integrated loupe or a spectacle-mounted loupe, a frame for holding the spectacle lens so as to surround it is unnecessary, and ordinary spectacles are used. Then, it is possible to configure the structure without an upper frame located around the user's eyebrows. Therefore, it is possible to make a binocular loupe with a novel design that has never been seen before, as well as a clean face and a comfortable fit.

The binocular loupe according to the present invention has the above configuration in addition to the above configuration.
It can be assumed that "the pair of the loupe bodies are each connected to the under rim at the eyepiece side end and connected to each other at the objective side end".

In a binocular loupe, it is necessary to set each angle so that the optical axes of each pair of loupe bodies intersect at the focal point of each lens system. In this configuration, since the pair of loupe bodies are connected to each other at the end on the side not connected to the under rim, that is, the end on the objective side which is the free end, the angle of each optical axis is set. Easy to maintain.

The binocular loupe according to the present invention has the above configuration in addition to the above configuration.
It can be assumed that "the pair of ear hooks each have a hook at an end".

In this configuration, since each pair of ear hooks has hooks at the ends, the binocular loupe can be fixed to the head by using a belt or band attached to the hooks, and the binocular loupe is attached. The state can be easily stabilized. Also, if you hang the strap attached to the hook around your neck, you can carry the binocular loupe with it removed when not in use.

As described above, according to the present invention, it is possible to provide a binocular loupe that is highly versatile, has a good fit, and has a good normal field of view that is not a magnified field of view.

It is a perspective view of the binocular loupe which is one Embodiment of this invention. It is a front view of the binocular loupe of FIG. It is a left side view of the binocular loupe of FIG. It is explanatory drawing of the optical axis in the binocular loupe of FIG. It is explanatory drawing of the magnified field of view and the normal field of view by the binocular loupe of FIG.

Hereinafter, the binocular loupe 1 according to the embodiment of the present invention will be specifically described with reference to the drawings. The binocular loupe 1 has a pair of loupe bodies 20 supported by a frame 10, and is integrally molded with resin except for the lens system inside the loupe body 20.

The frame 10 has a nose hook portion 11, a pair of under rims 12, and a pair of ear hook portions 13. The nose hook portion 11 has an inverted V shape and is hooked on the user's nose bridge from above. The pair of under rims 12 are curved and extended so as to bulge downward on both sides of the nose hook portion 11, respectively, and have a shape along the cheekbone of the user. Each of the pair of ear hook portions 13 extends upward continuously from the end of the under rim 12, and then the tips thereof are bent downward through the substantially linear portion 13s. A hook 13f is formed at the tip of each of the pair of ear hooks 13. The hook 13f is a flat ring with a part open.

Each of the pair of loupe bodies 20 has a lens system held in a truncated cone-shaped case whose diameter increases from the eyepiece side end E1 to the objective side end E2. In each loupe body 20, the side peripheral surfaces of the eyepiece side end portion E1 are fixed to the under rim 12 on both sides of the nose hook portion 11. The loupe body 20 is fixed to the under rim 12 at an angle at which the optical axis L of the lens system is tilted downward when the loupe body 20 is worn by the user. Specifically, the optical axis L of the loupe body 20 is set to form an angle α of 25 degrees ± 2 degrees with respect to the tangent line N of the substantially linear portion 13s of the ear hook portion 13 (FIG. 2). reference).

Further, the pair of loupe bodies 20 are fixed to the under rim 12 so as to face each other inward so that the optical axes L of the respective lens systems intersect at the focal point. Specifically, the optical axes L of each of the pair of loupe bodies 20 form an angle β of 8 degrees ± 1 degree in a field of view corresponding to a state in which the binocular loupe 1 mounted on the user is looked down from above the user. (See Fig. 4). The objective side end portions E2 of each of the pair of loupe main bodies 20 are connected to each other by a short connecting arm 27, and the mounting angle at which the respective optical axes L form an angle β is stably maintained.

The distance W of the optical axes L of each of the pair of loupe bodies 20 at the eyepiece side end E1 is set to 55 mm ± 2 mm (see FIG. 3).

As a result of the examination, by setting the angle α, the angle β, and the distance W as described above, for example, if the lens magnification is 3.5 times, even if the user's eye width and visual acuity are different in a general range. The working distance can be kept in the range of 35 cm to 45 cm.

In the binocular loupe 1 having the above configuration, the loupe body 20 supported by the under rim 12 is located below the user's eyes. Therefore, as schematically shown in FIG. 5, the loupe body 20 is enlarged in the downward line-of-sight V1. It can be seen, and it can be normally seen with the line of sight V2 facing the front. Therefore, without removing the binocular loupe 1, the magnifying glass and the normal vision can be repeated with the binocular loupe 1 attached.

In addition, unlike the conventional spectacle-integrated loupe and spectacle-mounted loupe, the binocular loupe 1 does not have a configuration equivalent to a spectacle lens, and naturally has a frame that surrounds the spectacle lens so as to hold it. Since there is nothing to block the front of the eye, the field of vision is usually very good.

Further, since the configuration corresponding to the spectacle lens does not have a frame surrounding the spectacle lens so as to hold the spectacle lens, the face circumference is neat in the worn state, and the wearing feeling is good. Furthermore, the loupe body 20 is supported by the under rim 12 that bulges downward and curves, which is a novel and sophisticated design that has never been seen before.

Further, since the hooks 13f are provided at the ends of each of the pair of ear hooks 13 and the hooks 13f have a flat annular shape with a part open, the belt or band can be easily attached and detached, and the belt can be easily attached. The binocular loupe 1 can be stably fixed to the head by a band or a band. Further, the strap can be detachably attached to the hook 13f, and if the strap is hung on the neck, the binocular loupe 1 in the removed state can be carried when not in use.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to the above embodiments, and as shown below, various improvements are made without departing from the gist of the present invention. And the design can be changed.

For example, in the above embodiment, the frame 1 is continuous from the under rim 12 to the ear hook portion 13, and unlike the frame of ordinary eyeglasses, it does not have a hinge portion for folding the frame. doing. This is because the normal field of view is good with the binocular loupe 1 attached, so it is not necessary to remove it during work, and when not in use, it can be carried with a band or the like attached to the hook 13f, so the frame 10 is folded in the first place. It is not necessary so much, it can be manufactured at low cost with a simple structure because there is no hinge part, and it has a neat design. However, it is not limited to such a configuration, and a foldable frame may be provided by providing a hinge portion between the under rim and the ear hook portion, and the frame may be stored in a folded state and stored. Can be carried.

Further, in the above embodiment, the case where the frame 10 and the loupe body 20 are integrally molded with resin except for the lens system is illustrated, but the present invention is not limited to this. For example, a loupe body molded separately from the frame can be integrated by attaching it to the frame.

Further, the binocular loupe 1 of the embodiment has one of the advantages that it does not have a configuration corresponding to a spectacle lens, but the present invention of the superordinate concept does not exclude a configuration corresponding to a spectacle lens. Depending on the application of the binocular loupe, a protective lens or a lens-shaped shield can be supported by the under rim.

1 Binocular loupe 10 Frame 11 Nose hook 12 Under rim 13 Ear hook 13f Hook 20 Magnifier body E1 Eyepiece side end E2 Objective side end L Optical axis

Claims (4)

A nose hook that hangs on the user's nose, a pair of ear hooks that hang on the ears, and an under that bulges downward and curves so as to extend along the cheekbones from the nose hook to each of the pair of ear hooks. With a frame that has a rim,
A binocular loupe including a pair of loupe bodies supported by the under rim on both sides of the nose hook. The binocular loupe according to claim 1, wherein the frame does not support a configuration corresponding to a spectacle lens. The binocular loupe according to claim 1 or 2, wherein each of the pair of loupe bodies is connected to the under rim at the eyepiece side end and is connected to each other at the objective side end. .. The binocular loupe according to any one of claims 1 to 3, wherein each of the pair of ear hooks has a hook at an end thereof.

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