JP7712009B1 - Medical binocular loupe device - Google Patents

Abstract

To propose a binocular loupe device capable of adjusting the focus according to the wearer's eyesight, physical condition, etc.
[Solution] The left and right loupes 3 supported on a connecting section attached to the head mounting section are configured so that an eyepiece tube member 22 having an eyepiece 31 and an objective tube member 23 having an objective lens 41 arranged opposite the eyepiece 31 are screwed together such that a first screw-type tube portion 32 of the eyepiece tube member 22 and a second screw-type tube portion 42 of the objective tube member 23 can be screwed forward and backward relative to each other. With this configuration, by screwing the eyepiece tube member 22 and the objective tube member 23 relative to each other, the inter-lens distance between the eyepiece 31 and the objective lens 41 can be changed to adjust the focus.
[Selected Figure] Figure 4

Description

The present invention relates to a binocular loupe device that is attached to the head of a wearer, allowing the wearer to view an object in a magnified view.

For example, Patent Document 1 proposes a loupe for use in medical settings. This conventional configuration includes a pair of supports attached to an eyeglass frame and a loupe body that is detachably fixed to the supports by a fixing mechanism. The loupe body is made up of an eyepiece tube and an objective tube, and has a built-in magnifying lens system with a predetermined focal length.

JP 2004-138870 A

The conventional loupes described in the above-mentioned Patent Document 1 use a loupe body with a fixed focal length fixed to a support part of an eyeglass frame, and therefore the loupe body may need to be replaced depending on the user's condition. For example, medical personnel use loupes when performing high-precision manual work, and because there are individual differences in the distance to the object at hand, the loupe body needs to be adjusted to this distance. In addition, since human eyesight changes depending on physical condition and fatigue, it is necessary to replace the loupe body according to the medical personnel's condition, and it may also be necessary to replace the loupe body according to changes in physical condition and fatigue during use. Furthermore, there are cases where the left and right eyes have different visual acuity, or changes in visual acuity due to physical condition and fatigue differ between the left and right eyes, and in response to these, it may be necessary to replace the loupe body. For these reasons, the above-mentioned conventional configuration has the problem of having to prepare multiple loupe bodies, and the problem of the need to replace the loupe body depending on the user's condition, which makes the work during use more complicated.

The present invention proposes a binocular loupe device that can be adjusted to suit the wearer.

The first aspect of the present invention is a binocular loupe device that includes a connecting section that is connected to a head mounting section that is mounted on the wearer's head, and a pair of left and right loupe sections that are supported by the connecting section and placed in front of the wearer's eyes, respectively. The left and right loupe sections each include an eyepiece tube member having an eyepiece lens and a substantially cylindrical first screw-on tube section, and an objective tube member having an objective lens arranged in front of and facing the eyepiece lens, and a substantially cylindrical second screw-on tube section that is screwed into the first screw-on tube section so that it can be screwed forward and backward, and one of the eyepiece tube member and the objective tube member is supported by the connecting section, and the other is provided so that it can be rotated by the wearer, and is screwed forward and backward relative to the one when rotated by the wearer.

In this configuration, the eyepiece tube member and the objective tube member can be moved relatively forward and backward, and the distance between the eyepiece lens and the objective lens (hereinafter referred to as the lens distance) changes with this movement, allowing focus adjustment. This focus adjustment can be easily performed by the wearer's rotation operation. As a result, this configuration can focus on each object when the distance to the object is different, and can also adjust the focus according to changes in vision caused by physical condition, fatigue, etc. Furthermore, since focus adjustment can be performed separately for the left and right loupe parts, focus adjustment can be performed according to the left and right vision, respectively, even if the vision of the left and right differs or the vision changes differently between the left and right. Therefore, according to the configuration of the present invention, focus adjustment can be easily performed according to the wearer's condition, so that medical personnel can easily perform high-precision manual work by using it, and the work efficiency of the manual work can be dramatically improved.

In the binocular loupe device of the present invention described above, a configuration is proposed in which the loupe section has the objective lens barrel member supported by the connecting portion, and the eyepiece barrel member is screwed forward and backward relative to the objective lens barrel member when rotated by the wearer.

In this configuration, by screwing the eyepiece barrel backward, the eyepiece lens is brought closer to the wearer's eye, allowing the subject to be made to look larger by adjusting the focus. This makes it easier for medical personnel to perform the manual tasks.

The second aspect of the present invention is a binocular loupe device that includes a head attachment part that is attached to the wearer's head and has a shield part that covers both of the wearer's eyes, and a pair of left and right loupe parts that are provided on the shield part so as to be positioned in front of the wearer's eyes, respectively. The left and right loupe parts each include an eyepiece tube member that has an eyepiece lens and a substantially cylindrical first screw-on tube part and is fixed to the shield part, and an objective tube member that has an objective lens that is arranged in front of and facing the eyepiece lens, and a substantially cylindrical second screw-on tube part that is screwed into the first screw-on tube part so as to be capable of being screwed forward and backward, and the objective tube member is provided so as to be rotatable by the wearer, and is screwed forward and backward relative to the eyepiece tube member when rotated by the wearer.

In this configuration, the objective barrel member can be moved forward and backward relative to the eyepiece barrel member, and the lens distance changes as the objective barrel member moves, allowing focus adjustment. This focus adjustment can be easily performed by the wearer by rotating the lens. As a result, the configuration of the second invention can achieve the same effects as the configuration of the first invention described above.

The binocular loupe device of the first invention described above allows the wearer to adjust the focus of the left and right loupe parts individually while wearing the device, making it easy to adjust the focus to suit the difference in vision between the left and right eyes and physical condition. Therefore, when used by medical professionals, it can dramatically improve work efficiency.

The binocular loupe device of the second invention described above has the same effect as the configuration of the first invention described above.

1 is a perspective view showing a state in which the binocular loupe device 1 of the first embodiment is attached to protective glasses 101. FIG. 1 is a plan view of the binocular loupe device 1 attached to protective glasses 101. FIG. 3A is a front view, FIG. 3B is a side view, and FIG. 3C is a rear view showing the magnifying glass part 3. FIG. FIG. 2 is a side view showing an eyepiece barrel member 22 and an objective barrel member 23 separated from each other. FIG. 2 is a vertical cross-sectional view showing an eyepiece barrel member 22 and an objective barrel member 23 separated from each other. FIG. FIG. 11 is a perspective view showing a binocular loupe device 51 according to a second embodiment. FIG. 2 is a plan view of the binocular loupe device 51.

Examples 1 and 2 embodying the present invention will be described with reference to the attached drawings. In Examples 1 and 2, the front-to-back direction refers to the front-to-back direction of the wearer, and left-to-right similarly refers to the left-to-right direction of the wearer. Furthermore, in the examples, the front and front sides are used in the same sense, and the rear and rear sides are used in the same sense.

The binocular loupe device 1 of Example 1 is used by attaching it to protective glasses 101 that are worn on the wearer's head, as shown in Figures 1 and 2. Here, the protective glasses 101 are provided with a frame portion 102 that is hung over both ears of the wearer and a transparent (or translucent) shield portion 103 that covers both eyes, and when worn on the wearer's head, the shield portion 103 is positioned in front of the wearer's both eyes. Since a general configuration can be applied for this protective glasses 101, details are omitted. In Example 1, the protective glasses 101 correspond to the head-mounted portion according to the present invention.

The binocular loupe device 1 comprises a connecting part 2 that is detachably attached to the frame part 102 of the protective glasses 101, a pair of left and right loupe parts 3, 3 that are arranged in front of the shield part 103 of the protective glasses 101 via the connecting part 2, and a light part 4 arranged between the loupe parts 3, 3. The connecting part 2 comprises a clip part 11 that is detachably attached to the protective glasses 101, a movable part 12 that is provided on the clip part 11 so as to be rotatable in the vertical direction, and a support rod part 13 that extends left and right from the movable part 12. The loupe parts 3, 3 are supported on both the left and right sides of the support rod part 13. In this binocular loupe device 1, when attached to the protective glasses 101, the left and right loupe parts 3, 3 and the light part 4 can be rotated up and down together by the movable part 12. This allows the height position of the magnifying glass parts 3, 3 to be appropriately changed, and the vertical inclination angle of the magnifying glass parts 3, 3 to be appropriately changed. In addition, the light part 4 is disposed on the movable part 12, and the light part 4 is provided with a cable 5 that supplies power from a battery (not shown).

The support rod 13 of the connecting part 2 is fixed to the movable part 12 at the left-right center, and long holes (not shown) that penetrate in the vertical direction are formed symmetrically on both left and right sides. A threaded rod 25 (see Figure 3) provided on the magnifying glass part 3 is inserted from below into each long hole, and a fixing part 26 is screwed into the upper part of the threaded rod 25, so that the left and right magnifying glass parts 3, 3 are supported by the support rod 13.

When the binocular loupe device 1 of this embodiment 1 is attached to the protective glasses 101, the left and right loupe sections 3, 3 are arranged so that they are inclined inward toward each other (see Figure 2). This is because the binocular loupe device 1 is for medical use, primarily used by doctors and the like, and is intended to magnify objects that are closer than ordinary binoculars.

Next, the main part of the present invention will be described.
3 and 4, the loupe section 3 is made up of an eyepiece tube member 22 in which an eyepiece lens 31 is disposed, and an objective tube member 23 in which an objective lens 41 is disposed, and the eyepiece tube member 22 is screwed into the rear part of the objective tube member 23. That is, the loupe section 3 in this embodiment is made up of two members, the eyepiece tube member 22 and the objective tube member 23.

As shown in Figures 4 to 6, the objective lens barrel member 23 is integrally formed with a cylindrical second screw-on barrel portion 42 into which the eyepiece barrel member 22 is screwed, an inclined barrel portion 43 that expands in diameter forward from the second screw-on barrel portion 42, and a ring-shaped lens holder portion 44 provided in front of the inclined barrel portion 43, and the objective lens 41 is disposed in the lens holder portion 44. A male screw (not shown) is formed on the outer circumferential surface of the second screw-on barrel portion 42. A support base portion 45 is provided on the upper portion of the lens holder portion 44, and the threaded rod portion 25 that is inserted into the long hole portion of the support rod portion 13 is provided to protrude upward from the support base portion 45.

The eyepiece tube member 22 is a concentrically integrated structure of a cylindrical first screw tube portion 32 that is screwed into the second screw tube portion 42 of the objective tube member 23, and a cylindrical inner tube portion 33 that is disposed inside the first screw tube portion 32. The eyepiece lens 31 is disposed in the inner tube portion 33. The inner peripheral surface of the first screw tube portion 32 is formed with a female screw (not shown) that is screwed into the male screw of the second screw tube portion 42. A gap 35 is provided between the first screw tube portion 32 and the inner tube portion 33, allowing the second screw tube portion 42 to be screwed. In other words, the eyepiece tube member 22 has a double structure in which the inner tube portion 33 is disposed inside the first screw tube portion 32 through the gap 35. Furthermore, an O-ring 36 is fitted onto the outer peripheral surface of the inner tube portion 33. This O-ring 36 comes into close contact with the inner peripheral surface of the second screw-on tube portion 42 when the first screw-on tube portion 32 and the second screw-on tube portion 42 are screwed together. As a result, when the first screw-on tube portion 32 and the second screw-on tube portion 42 are rotated relative to each other (threaded forward and backward), the O-ring 36 acts as a resistance, causing the rotation to stop due to this resistance. Therefore, even if the eyepiece tube member 22 is rotated forcefully, the rotation can be stopped, and it is possible to prevent the first screw-on tube portion 32 and the second screw-on tube portion 42 from becoming disengaged due to the rotation continuing without stopping.

Furthermore, the eyepiece tube member 22 has anti-slip portions 37, 37 that protrude intermittently in the circumferential direction formed on the outer peripheral surface of the first screw-on tube portion 32. These anti-slip portions 37 allow the wearer to easily rotate the eyepiece tube member 22 without having to look at his or her hands.

The first screw-on tube portion 32 of the eyepiece tube member 22 and the second screw-on tube portion 42 of the objective tube member 23 are screwed together to form the loupe portion 3 of this embodiment, as shown in FIG. 4. In this loupe portion 3, the eyepiece lens 31 and the objective lens 41 are arranged facing each other with a gap in the front-rear direction, and can be screwed forward and backward relative to the objective tube member 23 by rotating the eyepiece tube member 22, and the distance between the eyepiece lens 31 and the objective lens 41 (lens distance) can be changed with this screwing. Here, in this embodiment, the female screw of the first screw-on tube portion 32 and the male screw of the second screw-on tube portion 42 are formed with a relatively narrow pitch. Specifically, this pitch distance is less than 1 mm (preferably 0.5 mm or less). This makes it easy to fine-tune the lens distance, and allows for high-precision focus adjustment to suit the wearer's eyesight.

As described above, the loupe portion 3 of this embodiment 1 is attached to the connecting portion 2 by inserting the threaded rod portion 25 from below into the long hole portion provided in the support rod portion 13 of the connecting portion 2 and screwing the fixing portion 26 (see FIG. 1). The left and right loupe portions 3, 3 attached to the left and right long hole portions of the support rod portion 13 in this way can be positioned and fixed by tightening the fixing portion 26, and the left and right positions can be changed by releasing the tightening.

In the binocular loupe device 1 of this embodiment 1, the protective glasses 101 are attached to the head of the wearer, and the left and right loupe parts 3, 3 are positioned in front of the wearer's eyes, so that the wearer can magnify the object. Then, while the wearer is looking at the object, the eyepiece tube members 22, 22 of the left and right loupe parts 3, 3 can be rotated to focus on the object. This focus adjustment can be performed individually for the left and right loupe parts 3, 3, and can be performed according to the distance from the objective lens 41 to the object (so-called working distance). In other words, according to the configuration of this embodiment, when the vision of the left and right eyes is different, the focus can be adjusted to the left and right, and the focus can be adjusted to the working distance used by the wearer. For example, when used by a doctor, the focus can be adjusted according to the vision of the left and right eyes and the distance to the hand (object) that is easy for the doctor to use. Furthermore, the focus adjustment can be performed by rotating the eyepiece tube member 22, so even during use, focus adjustment can be easily performed according to physical condition, fatigue, etc.

In addition, the loupe section 3 is configured such that the objective tube member 23 is supported by the connecting section 2 and the eyepiece tube member 22 is screwed forward by rotating it, so that the focus can be adjusted by moving the eyepiece tube member 22 back and forth behind the objective tube member 23. As a result, when adjusting the focus, the eyepiece lens 31 is brought closer to the wearer's eye by moving the eyepiece tube member 22 backward, allowing the wearer to see the object in a larger size. This has the advantage that it is easier for medical professionals (doctors) to perform manual operations.

As mentioned above, the resistance of the O-ring 36 in the loupe portion 3 can stop the rotation of the eyepiece tube member 22, preventing the eyepiece tube member 22 from accidentally coming off the objective lens tube member 23. Furthermore, the O-ring 36 closes the space between the objective lens 41 and the eyepiece lens 31, which has the excellent advantage of preventing dust and other foreign matter from entering this closed space.

The configuration of this Example 1 can be attached to and detached from the protective glasses 101, and therefore can be attached to a variety of glasses for use. For example, it can be attached to the wearer's personal vision correction glasses. In addition, in the configuration of Example 1, since the loupe portion 3 can be detached from the connecting portion 2, it is also possible to replace the loupe portion 3 with one equipped with an objective lens and an eyepiece lens of different magnifications.

As shown in Figures 7 and 8, the binocular loupe device 51 of Example 2 comprises protective glasses 101 worn on the head of the wearer, and a pair of left and right loupe parts 53, 53 attached to the shield part 103 of the protective glasses 101. The configuration of Example 2 is for medical use, mainly used by doctors, as in Example 1 described above. Note that, in Example 2 as well, the front, back, left and right directions are defined and explained as in Example 1.

The protective glasses 101 of the second embodiment include a frame portion 102 and a shield portion 103 similar to those of the first embodiment described above. The shield portion 103 has openings 65, 65 formed in front of the wearer's eyes, and the loupe portions 53, 53 are fixed to the openings 65, 65. Since the binocular loupe device 51 of the second embodiment is for medical use, the left and right loupe portions 53, 53 are attached to the shield portion 103 with each of them inclined inward and downward. In the second embodiment, the protective glasses 101 correspond to the head-mounted portion according to the present invention.

The loupe section 53 is composed of two members, an eyepiece tube member 62 and an objective tube member 63, which is screwed into the eyepiece tube member 62. As in the first embodiment, the objective tube member 63 includes a second screw-on tube portion 42, an inclined tube portion 43, and a lens holder 44, and the objective lens 41 is disposed in the lens holder 44 (see Figures 3 to 6). The objective tube member 63 of the second embodiment is the same as that of the first embodiment, except that it does not include a support base portion and a threaded rod portion. The same components are denoted by the same reference numerals and descriptions thereof will be omitted.

The eyepiece tube member 62, like the first embodiment, has a first screw-on tube portion 32 and an inner tube portion 33, and the eyepiece lens 31 and O-ring 36 are arranged in the inner tube portion 33 (see Figs. 3 to 6). Furthermore, the eyepiece tube member 62 of the second embodiment has a substantially cylindrical mounting tube portion 64 extending rearward from the rear end of the first screw-on tube portion 32. The mounting tube portion 64 is formed in a substantially obliquely cut cylindrical shape (a shape in which a cylinder is cut approximately obliquely with respect to the central axis) with a rear end opening edge that follows the surface shape of the shield portion 103, and the rear end opening edge is fitted and fixed in an opening 65 of the shield portion 103. The eyepiece tube member 62 of the second embodiment is the same as that of the first embodiment except for the mounting tube portion 64, and the same components are designated by the same reference numerals and will not be described.

In the binocular loupe device 51 of this embodiment 2, the protective glasses 101 are worn on the wearer's head, so that the left and right loupe sections 53, 53 are positioned in front of the wearer's eyes. In this worn state, the wearer can view the object in a magnified view. Then, while the wearer is looking at the object, the objective lens barrel members 63, 63 of the left and right loupe sections 3, 3 can be rotated to focus on the object. In this embodiment 2, as in the first embodiment, the left and right loupe sections 53, 53 can be individually focused, and the focus can be adjusted according to the distance to the object (working distance). Therefore, the focus can be adjusted in the same way as in the first embodiment. In addition, in the configuration of this embodiment 2, since the O-ring 36 is provided, the resistance of the O-ring 36 can stop the rotation of the objective lens barrel member 63, and the objective lens barrel member 63 can be prevented from accidentally coming off the eyepiece barrel member 62. Another great advantage is that it prevents dust and other foreign matter from getting into the closed space between the objective lens 41 and the eyepiece lens 31.

The present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the spirit of the present invention. For example, the dimensions and shapes of each part in the above-described embodiment can be modified as appropriate.

In the first embodiment, the objective lens barrel member is supported by the connecting portion, but this is not limited thereto, and the eyepiece barrel member may also be supported by the connecting portion.

In the first embodiment, the protective glasses are provided with a detachable connecting part, but the present invention is not limited to this. The connecting part may be fixed to the frame part of the protective glasses. The connecting part may also be fixed to a head belt part that is attached to the wearer's head.

In the second embodiment, the protective glasses may be provided with a light unit.

In Examples 1 and 2, a female screw is provided on the first screw-on tube of the eyepiece tube member, and a male screw is provided on the second screw-on tube of the objective tube member, but this is not limited thereto, and a female screw may be provided on the second screw-on tube member, and a male screw may be provided on the first screw-on tube member.

In Example 1, a configuration in which the magnifying glass is attached to safety glasses is illustrated, but as mentioned above, the magnifying glass can be attached to various glasses other than safety glasses. Similarly, in Example 2, the magnifying glass can be attached to various glasses other than safety glasses (e.g., prescription glasses, etc.).

Reference Signs List 1, 51 Binocular loupe member 2 Connection portion 3, 53 Loupe portion 22, 62 Eyepiece barrel member 23, 63 Objective barrel member 31 Eyepiece lens 32 First screw-on barrel portion 41 Objective lens 42 Second screw-on barrel portion 101 Protective glasses (head-mounted portion)
103 Shield part

Claims (3)

A connection part that is connected to a head mounting part that is mounted on the wearer's head;
A pair of left and right loupe parts supported by the connecting part and placed in front of both eyes of the wearer,
The left and right loupe portions are
an eyepiece barrel member having an eyepiece lens and a substantially cylindrical first screw-fitting barrel portion;
an objective lens barrel member having an objective lens disposed in front of and facing the eyepiece lens, and a substantially cylindrical second screw-on barrel portion screwed into the first screw-on barrel portion so as to be capable of being screwed forward and backward,
one of the eyepiece barrel member and the objective barrel member is supported by the connecting portion, and the other is provided so as to be rotatable by the wearer, and is threadedly advanced in a forward and backward direction relative to the other by the wearer's rotation ,
and,
The left and right magnifying glass portions are arranged so as to be inclined inwardly with respect to each other,
The eyepiece tube member is formed by concentrically and integrally forming the first threaded tube portion and an inner tube portion disposed inside the first threaded tube portion, an O-ring is fitted onto the outer peripheral surface of the inner tube portion, and when the first threaded tube portion and the second threaded tube portion are threadedly engaged with each other, the O-ring is in close contact with the inner peripheral surface of the second threaded tube portion, and when the first threaded tube portion and the second threaded tube portion rotate relatively to each other, the O-ring provides resistance, stopping the relative rotation between the first threaded tube portion and the second threaded tube portion . The magnifying glass portion is
2. The medical binocular loupe member according to claim 1, wherein the objective lens barrel member is supported by the connecting portion, and the eyepiece barrel member is screwed forward and backward relative to the objective lens barrel member by a rotation operation by the wearer. A head-mounted part that is mounted on the wearer's head and has a shield part that covers both eyes of the wearer;
a pair of loupe sections provided on the shield section so as to be positioned in front of the wearer's eyes,
The left and right loupe portions are
an eyepiece barrel member having an eyepiece lens and a substantially cylindrical first screw-fitting barrel portion and fixed to the shield portion;
an objective lens barrel member having an objective lens disposed in front of and facing the eyepiece lens, and a substantially cylindrical second screw-on barrel portion screwed into the first screw-on barrel portion so as to be capable of being screwed forward and backward,
the objective lens barrel member is provided so as to be rotatable by the wearer, and is threadedly advanced in a forward and backward direction relative to the eyepiece barrel member by the wearer's rotational operation,
and,
The left and right magnifying glass portions are arranged so as to be inclined inwardly with respect to each other,
The eyepiece tube member is formed by concentrically and integrally forming the first threaded tube portion and an inner tube portion disposed inside the first threaded tube portion, an O-ring is fitted onto the outer peripheral surface of the inner tube portion, and when the first threaded tube portion and the second threaded tube portion are threadedly engaged with each other, the O-ring is in close contact with the inner peripheral surface of the second threaded tube portion, and when the first threaded tube portion and the second threaded tube portion rotate relatively to each other, the O-ring provides resistance, stopping the relative rotation between the first threaded tube portion and the second threaded tube portion .