Medical binocular magnifier device

Abstract

A binocular loupe device capable of adjusting focus according to the vision and physical condition of the wearer is proposed. 【Solution means】The left and right loupe parts 3 supported by the connecting part attached to the head mounting part are configured such that the eyepiece barrel member 22 having the eyepiece lens 31 and the objective lens barrel member 23 having the objective lens 41 arranged opposite to the eyepiece lens 31 are screwed together with the first screwed cylinder part 32 of the eyepiece barrel member 22 and the second screwed cylinder part 42 of the objective lens barrel member 23 being relatively screwable in the front-rear direction. With this configuration, by relatively screwing the eyepiece barrel member 22 and the objective lens barrel member 23, the lens interval between the eyepiece lens 31 and the objective lens 41 can be changed to adjust the focus.

Description

Technical Field

[0001] The present invention relates to a binocular loupe device that can be worn on the head of a wearer to magnify an object for the wearer.

Background Art

[0002] For example, Patent Document 1 proposes a loupe used in a medical field. Such a conventional configuration includes a pair of support portions provided on a spectacle frame and a loupe main body detachably fixed to the support portions by a fixing mechanism. The loupe main body is composed of an eyepiece barrel and an objective barrel, and incorporates a magnifying lens system having a predetermined focal length.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The conventional loupe described in the above-mentioned Patent Document 1 uses a loupe body with a fixed focal length fixed to the support part of the spectacle frame. Therefore, it may be necessary to replace the loupe body according to the condition of the user. For example, medical workers use a loupe when performing highly precise manual work, and there are individual differences in the distance to the hand (object). Therefore, the above-mentioned loupe body that matches this distance is required. In addition, since human eyesight changes depending on physical condition, fatigue, etc., it is necessary to replace the loupe body according to the condition of medical workers, 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 eyesight is different between the left and right, or where the change in eyesight due to physical condition and fatigue is different between the left and right eyes, and in these cases, it may also be necessary to replace the loupe body. For these reasons, in the above-mentioned conventional configuration, there are problems that a plurality of loupe bodies must be prepared, and the work during use becomes complicated because the loupe body needs to be replaced according to the condition of the user.

[0005] The present invention proposes a binocular loupe device that can be adjusted according to the wearer.

Means for Solving the Problems

[0006] The first aspect of the present invention includes a connecting part connected to a head mounting part mounted on the head of the wearer, and a pair of left and right loupe parts supported by the connecting part and respectively arranged in front of both eyes of the wearer. The left and right loupe parts each include an eyepiece barrel member having an eyepiece lens and a substantially cylindrical first screwing cylinder part, an objective lens oppositely arranged in front of the eyepiece lens, and a substantially cylindrical second screwing cylinder part screwed to the first screwing cylinder part so as to be screwingly advanced in the front-rear direction. One of the eyepiece barrel member and the objective lens barrel member is supported by the connecting part, and the other is provided so as to be rotatable by the wearer, and is screwed in the front-rear direction with respect to the one by the rotation operation of the wearer. It is a binocular loupe device characterized by this.

[0007] In such a configuration, the eyepiece barrel member and the objective lens barrel member can be relatively moved in the front-rear direction, and as the distance between the eyepiece lens and the objective lens (hereinafter referred to as the inter-lens distance) changes with this movement, focusing adjustment can be performed. And this focusing adjustment can be easily performed by the rotation operation of the wearer. For these reasons, this configuration can focus on each object when the distances to the objects are different, and can also perform focusing adjustment according to the change even when the vision changes due to physical condition, fatigue, etc. Furthermore, since the focusing adjustment can be performed separately at the left and right loupe parts, even when the vision is different between the left and right or when the vision changes are different between the left and right, the focusing adjustment can be performed according to the vision of the left and right respectively. Therefore, according to the configuration of the present invention, the focusing adjustment can be easily performed according to the state of the wearer, so it is easy for medical staff to perform high-precision manual work by using it, and the work efficiency of the manual work can be dramatically improved.

[0008] In the binocular loupe device of the present invention described above, a configuration is proposed in which the loupe part is such that the objective lens barrel member is supported by the connecting part, and the eyepiece barrel member is screwed forward and backward with respect to the objective lens barrel member by the rotation operation of the wearer.

[0009] In such a configuration, by screwing the eyepiece barrel member backward, the eyepiece lens approaches the wearer's eye, so that the object can be made to appear larger by focusing adjustment. This makes it easier for medical staff to perform the above-mentioned manual work.

[0010] A second aspect of the present invention is a head-mounted device having a shield portion that is mounted on the head of the wearer and covers both eyes of the wearer, and a pair of left and right loupe portions provided on the shield portion so as to be respectively positioned in front of both eyes of the wearer. The left and right loupe portions each have an eyepiece lens and a substantially cylindrical first threaded cylinder portion, an eyeglass barrel member fixed to the shield portion, an objective lens disposed opposite to the front of the eyepiece lens, and a substantially cylindrical second threaded cylinder portion that is screwed into the first threaded cylinder portion so as to be capable of screwing forward and backward in the front-rear direction. The objective lens barrel member is provided so as to be rotatable by the wearer, and is screwed forward and backward in the front-rear direction with respect to the eyeglass barrel member by the rotation operation of the wearer. It is a binocular loupe device characterized by the above.

[0011] In such a configuration, the objective lens barrel member can be moved in the front-rear direction with respect to the eyeglass barrel member, and the lens interval changes as the objective lens barrel member moves, so that focusing adjustment can be performed. And this focusing adjustment can be easily performed by the rotation operation of the wearer. For these reasons, even in the configuration of the second invention, the same operational effects as those of the first invention described above can be achieved.

Effects of the Invention

[0012] In the binocular loupe device of the first invention described above, since the left and right loupe portions can be individually focused while the wearer is wearing them, focusing can be easily adjusted according to the left and right visual acuity differences and physical conditions. Therefore, the work efficiency can be dramatically improved when used by medical personnel.

[0013] In the binocular loupe device of the second invention described above, the same operational effects as those of the first invention described above are achieved.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0015] Examples 1 and 2 embodying the present invention will be described with reference to the accompanying drawings. In Examples 1 and 2, the front-rear direction indicates the front-rear direction of the wearer, and the left-right direction indicates the left-right direction of the wearer as well. Further, in the examples, the front surface and the front side are used in the same meaning, and the rear surface and the rear side are used in the same meaning.

Examples

[0016] As shown in FIGS. 1 and 2, the binocular loupe device 1 of Example 1 is attached to and used with a protective glasses 101 that is worn on the head of the wearer. Here, the protective glasses 101 include a frame part 102 that is hung on both ears of the wearer and a transparent (or light-transmissive) shield part 103 that covers both eyes. By being worn on the head of the wearer, the shield part 103 is disposed in front of both eyes of the wearer. Since a protective glasses 101 having a general configuration can be applied, details are omitted. In Example 1, the protective glasses 101 correspond to the head-mounted part according to the present invention.

[0017] The binocular loupe device 1 includes a connecting part 2 detachably attached to the frame part 102 of the protective glasses 101, a pair of left and right loupe parts 3, 3 arranged in front of the shield part 103 of the protective glasses 101 via the connecting part 2, and a light part 4 disposed between the loupe parts 3, 3. The connecting part 2 includes a clip part 11 detachably attached to the protective glasses 101, a movable part 12 rotatably provided in the vertical direction on the clip part 11, and a support rod part 13 extending left and right from the movable part 12. The left and right loupe parts 3, 3 are supported on both left and right sides of the support rod part 13. In this binocular loupe device 1, in a state of being attached to the protective glasses 101, the left and right loupe parts 3, 3 and the light part 4 can be integrally rotated in the vertical direction by the movable part 12. Thereby, the height position of the loupe parts 3, 3 can be appropriately changed, and the vertical inclination angle of the loupe parts 3, 3 can be appropriately changed. Further, the light part 4 is disposed on the movable part 12, and a cable 5 for supplying power from a battery (not shown) is provided on the light part 4.

[0018] The support rod part 13 of the connecting part 2 is fixed to the movable part 12 at the central part in the left - right direction, and long hole parts (not shown) penetrating in the vertical direction are symmetrically formed on both left and right sides thereof. A screw rod part 25 (see FIG. 3) provided on the loupe part 3 is inserted into each long hole part from below, and a fixing part 26 is screwed onto the upper part of the screw rod part 25, whereby the left and right loupe parts 3, 3 are supported by the support rod part 13.

[0019] In the binocular loupe device 1 of the first embodiment, in a state of being attached to the protective glasses 101, the left and right loupe parts 3, 3 are arranged to incline inwardly with respect to each other (see FIG. 2). This is because the binocular loupe device 1 is for medical use mainly by doctors and the like, and is for magnifying an object at a distance closer than that of ordinary binoculars.

[0020] Next, the main part of the present invention will be described. As shown in FIGS. 3 and 4, the magnifying glass portion 3 is composed of an eyepiece barrel member 22 in which an eyepiece 31 is disposed and an objective lens barrel member 23 in which an objective lens 41 is disposed, and the eyepiece barrel member 22 is screwed to the rear portion of the objective lens barrel member 23. That is, the magnifying glass portion 3 of the present embodiment is composed of two members, namely, an eyepiece barrel member 22 and an objective lens barrel member 23.

[0021] As shown in FIGS. 4 to 6, the objective lens barrel member 23 is integrally formed with a cylindrical second screw portion 42 to which the eyepiece barrel member 22 is screwed, an inclined cylinder portion 43 whose diameter is enlarged forward from the second screw portion 42, and a ring-shaped lens holding portion 44 provided in front of the inclined cylinder portion 43. The objective lens 41 is disposed in the lens holding portion 44. A male screw (not shown) is formed on the outer peripheral surface of the second screw portion 42. Further, a support base portion 45 is provided on the upper portion of the lens holding portion 44, and the screw rod portion 25 inserted into the long hole portion of the support rod portion 13 projects upward from the support base portion 45.

[0022] The eyepiece barrel member 22 is provided with a cylindrical first screwed barrel portion 32 screwed to the second screwed barrel portion 42 of the objective lens barrel member 23 and a cylindrical inner barrel portion 33 disposed inside the first screwed barrel portion 32 concentrically and integrally. The eyepiece lens 31 is disposed on the inner barrel portion 33. On the inner peripheral surface of the first screwed barrel portion 32, a female screw (not shown) screwed to the male screw of the second screwed barrel portion 42 is formed. And a gap 35 allowing the second screwed barrel portion 42 to be screwed in is provided around between the first screwed barrel portion 32 and the inner barrel portion 33. That is, the eyepiece barrel member 22 has a double structure in which the inner barrel portion 33 is disposed inside the first screwed barrel portion 32 with the gap 35 therebetween. Further, an O-ring 36 is externally fitted on the outer peripheral surface of the inner barrel portion 33. In a state where the first screwed barrel portion 32 and the second screwed barrel portion 42 are screwed together, this O-ring 36 is in close contact with the inner peripheral surface of the second screwed barrel portion 42. Thus, when the first screwed barrel portion 32 and the second screwed barrel portion 42 are relatively rotated (screwed in the front-rear direction), since the O-ring 36 serves as a resistance, rotation stops due to this resistance. For this reason, even if the eyepiece barrel member 22 is rotated vigorously, rotation can be stopped, so that it is possible to prevent the screwing engagement between the first screwed barrel portion 32 and the second screwed barrel portion 42 from being released due to continuous rotation without rotation stop.

[0023] Furthermore, on the outer peripheral surface of the first screwed barrel portion 32 of the eyepiece barrel member 22, anti-slip portions 37, 37 protruding intermittently in the circumferential direction are formed. By these anti-slip portions 37, the wearer can easily rotate the eyepiece barrel member 22 without looking at their hands.

[0024] By screwing the first threaded cylinder portion 32 of the eyepiece barrel member 22 and the second threaded cylinder portion 42 of the objective lens barrel member 23 together, as shown in FIG. 4, the loupe portion 3 of the present embodiment is configured. In this loupe portion 3, the eyepiece lens 31 and the objective lens 41 are arranged to face each other with a space therebetween in the front-rear direction, and by rotating the eyepiece barrel member 22, it can be screwed forward and backward with respect to the objective lens barrel member 23, and the distance (lens interval) between the eyepiece lens 31 and the objective lens 41 can be changed along with this screwing. Here, in the present embodiment, the female screw of the first threaded cylinder portion 32 and the male screw of the second threaded cylinder portion 42 are formed with a relatively narrow pitch between them. Specifically, this pitch distance is formed to be less than 1 mm (preferably, 0.5 mm or less). Thereby, it is easy to finely adjust the lens interval, and the focus can be adjusted with high precision according to the eyesight of the wearer.

[0025] As described above, the loupe portion 3 of the first embodiment is attached to the connecting portion 2 by inserting the screw 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 respectively attached to the left and right long hole portions of the support rod portion 13 can be positioned and fixed by tightening the fixing portion 26, and the left and right positions can be changed by releasing the tightening.

[0026] In the binocular magnifier device 1 of the present Example 1, with the protective glasses 101 attached, the protective glasses 101 are worn on the wearer's head, and the left and right magnifier parts 3, 3 are positioned in front of both eyes of the wearer, so that the wearer can view the object in an enlarged manner. Then, while the wearer is looking at the object, by rotating the eyepiece barrel members 22, 22 of the left and right magnifier parts 3, 3 respectively, the object can be focused. This focusing adjustment can be performed individually for the left and right magnifier parts 3, 3 and can also be performed according to the distance from the objective lens 41 to the object (so-called working distance). That is, according to the configuration of the present Example, when the vision of the left and right eyes is different, the focusing adjustment can be made separately for the left and right eyes, and the focusing adjustment can be made according to the working distance used by the wearer. For example, when used by a doctor, the focusing adjustment can be performed according to the vision of the left and right eyes and the distance to the object (hand position) that is easy for the doctor to use. Further, since the above focusing adjustment can be performed by rotating the eyepiece barrel member 22, the focusing adjustment can be easily performed according to the physical condition, fatigue, etc. even during use.

[0027] Also, since the magnifier part 3 is configured such that the objective lens barrel member 23 is supported by the connecting part 2 and the eyepiece barrel member 22 is screwed in by a rotation operation, the eyepiece barrel member 22 moves back and forth behind the objective lens barrel member 23 to enable the above focusing adjustment. Thereby, when performing the focusing adjustment, by moving the eyepiece barrel member 22 backward, the eyepiece lens 31 approaches the wearer's eye, so that the wearer can view the object larger. For this reason, when used by medical staff (doctors) etc., there is an advantage that it becomes easier to perform handwork.

[0028] Also, as described above, the magnifier part 3 can stop the rotation of the eyepiece barrel member 22 due to the resistance of the O-ring 36, and can prevent the eyepiece barrel member 22 from accidentally coming off the objective lens barrel member 23. Further, since the O-ring 36 closes the space between the objective lens 41 and the eyepiece lens 31, there is also an excellent advantage that it can prevent dust etc. from entering this closed space.

[0029] Since the configuration of the first embodiment is detachable from the protective glasses 101, it can be attached to and used with various glasses. For example, it can also be attached to the glasses for vision correction of the wearer. In the configuration of the first embodiment, since the loupe part 3 is detachable from the connecting part 2, it is also possible to replace the loupe part 3 provided with objective lenses and eyepieces with different magnifications.

Embodiment

[0030] In the binocular loupe device 51 of the second embodiment, as shown in FIGS. 7 and 8, it includes protective glasses 101 worn on the wearer's head 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 the second embodiment is, like the aforementioned first embodiment, mainly for medical use by doctors and the like. In the second embodiment as well, the directions of front, rear, left, and right are defined and described in the same manner as in the first embodiment.

[0031] The protective glasses 101 of the second embodiment include a frame part 102 and a shield part 103 similar to those of the aforementioned first embodiment. And in this shield part 103, openings 65, 65 are formed to open at positions immediately in front of both eyes of the wearer, and the loupe parts 53, 53 are fixedly connected to the respective openings 65, 65. Here, since the binocular loupe device 51 of the second embodiment is for medical use, the left and right loupe parts 53, 53 are respectively attached to the shield part 103 so as to be inclined inward and downward with respect to each other. In the second embodiment, the protective glasses 101 correspond to the head-mounted part according to the present invention.

[0032] The loupe part 53 is composed of two members, an eyepiece barrel member 62 and an objective lens barrel member 63, and the objective lens barrel member 63 is screwed onto the eyepiece barrel member 62. The objective lens barrel member 63 includes a second screwed cylinder part 42, an inclined cylinder part 43, and a lens holding part 44, and an objective lens 41 is disposed in the lens holding part 44, in the same manner as in the aforementioned first embodiment (see FIGS. 3 to 6). The objective lens barrel member 63 of this second embodiment is the same as that of the first embodiment except that it does not include a support base part and a screw rod part. The same reference numerals are given to the same components and the description thereof is omitted.

[0033] The eyepiece barrel member 62 includes a first screwed cylinder part 32 and an inner cylinder part 33, in the same manner as in the aforementioned first embodiment, and an eyepiece 31 and an O-ring 36 are disposed in the inner cylinder part 33 (see FIGS. 3 to 6). Further, the eyepiece barrel member 62 of the second embodiment is provided with a substantially cylindrical attachment cylinder part 64 extending rearward from the rear end of the first screwed cylinder part 32. The attachment cylinder part 64 has a substantially beveled cylindrical shape (a shape in which the cylinder is cut substantially obliquely with respect to the central axis) having a rear end opening edge following the surface form of the shield part 103, and the rear end opening edge is fitted and fixed into the opening 65 of the shield part 103. Note that the eyepiece barrel member 62 of the second embodiment is the same as that of the first embodiment except for the attachment cylinder part 64. The same reference numerals are given to the same components and the description thereof is omitted.

[0034] In the binocular magnifier device 51 of the second embodiment, when the protective glasses 101 are worn on the wearer's head, the left and right magnifier parts 53, 53 are positioned in front of both eyes of the wearer. In this worn state, the wearer can view the object in an enlarged manner. Then, while the wearer is looking at the object, by rotating the objective lens barrel members 63, 63 of the left and right magnifier parts 3, 3 respectively, the object can be focused. Also in the second embodiment, similar to the first embodiment, the focus can be adjusted individually with the left and right magnifier parts 53, 53, and the focus can be adjusted according to the distance (operating distance) to the object. Therefore, the focus adjustment can be performed in the same manner as in the first embodiment. Further, also in the configuration of the second embodiment, since the O-ring 36 is provided, the rotation of the objective lens barrel member 63 can be stopped by the resistance of the O-ring 36, and it is possible to prevent the objective lens barrel member 63 from accidentally coming off from the eyepiece barrel member 62. And there is also an excellent advantage that it is possible to prevent dust or the like from entering the closed space between the objective lens 41 and the eyepiece lens 31.

[0035] The present invention is not limited to the above-described embodiments, and can be appropriately modified within the scope not departing from the gist of the present invention. For example, the dimensional shapes of the respective parts in the above-described embodiments can be appropriately changed.

[0036] In the first embodiment, the objective lens barrel member is configured to be supported by the connecting part, but it is not limited to this, and the eyepiece barrel member can also be configured to be supported by the connecting part.

[0037] In the first embodiment, the protective glasses are configured to have a detachable connecting part, but it is not limited to this, and the connecting part may be configured to be fixed to the frame part of the protective glasses. Also, the connecting part may be configured to be fixed to a head belt part worn on the wearer's head.

[0038] In the second embodiment, the protective glasses may be configured to be provided with a light part.

[0039] In Examples 1 and 2, a female screw is provided on the first screwed cylinder portion of the eyepiece barrel member and a male screw is provided on the second screwed cylinder portion of the objective lens barrel member. However, the present invention is not limited thereto, and a configuration in which a female screw is provided on the second screwed cylinder portion and a male screw is provided on the first screwed cylinder portion may also be adopted.

[0040] Example 1 illustrates a configuration for mounting on protective glasses. However, as described above, it can be mounted on various glasses other than protective glasses. Similarly, in Example 2 as well, a configuration in which the loupe portion is attached to various glasses other than protective glasses (for example, prescription glasses, etc.) may be adopted.

Explanation of Reference Numerals

[0041] 1,51 binocular loupe member 2 connecting portion 3,53 loupe portion 22,62 eyepiece barrel member 23,63 objective lens barrel member 31 eyepiece 32 first screwed cylinder portion 41 objective lens 42 second screwed cylinder portion 101 protective glasses (head mounting portion) 103 shield portion

Claims

1. A connecting part connected to a head-mounted part to be mounted on the head of the wearer, A pair of left and right loupe parts supported by the connecting part and respectively arranged in front of both eyes of the wearer It is provided with, The left and right loupe parts are, An eyepiece barrel member having an eyepiece lens and a substantially cylindrical first screwed cylinder part, An objective lens disposed opposite to the front of the eyepiece lens, and an objective lens barrel member having a substantially cylindrical second screwed cylinder part screwed into the first screwed cylinder part so as to be axially movable Each having, One of the eyepiece barrel member and the objective lens barrel member is supported by the connecting part, and the other is provided so as to be rotatable by the wearer, and is screwed axially with respect to the one by the rotation operation of the wearer. Yes, And, The left and right loupe parts are arranged so as to be inclined inward with respect to each other, The eyepiece barrel member is provided with the first screwed cylinder part and an inner cylinder part disposed inside the first screwed cylinder part concentrically and integrally. An O-ring is externally fitted to the outer peripheral surface of the inner cylinder part. The O-ring is in close contact with the inner peripheral surface of the second screwed cylinder part in a state where the first screwed cylinder part and the second screwed cylinder part are screwed together. When the first screwed cylinder part and the second screwed cylinder part rotate relative to each other, the O-ring becomes a resistance and the relative rotation of the first screwed cylinder part and the second screwed cylinder part stops. A binocular loupe device for medical use characterized by that.

2. The loupe part is, The objective lens barrel member is supported by the connecting part, and the eyepiece barrel member is screwed axially with respect to the objective lens barrel member by the rotation operation of the wearer. The binocular loupe member for medical use according to claim 1, characterized in that.

3. A head-mounted part that is mounted on the head of the wearer and has a shield part that covers both eyes of the wearer, A pair of left and right loupe parts provided on the shield part so as to be respectively positioned in front of both eyes of the wearer It is provided with, The left and right loupe parts are, An eyepiece barrel member having an eyepiece lens and a substantially cylindrical first screwed cylinder part, and fixed to the shield part, An objective lens disposed opposite to the front of the eyepiece lens, and an objective lens barrel member having a substantially cylindrical second screwed cylinder part screwed into the first screwed cylinder part so as to be axially movable Each having, The objective lens barrel member is provided so as to be rotatable by the wearer, and is screwed axially with respect to the eyepiece barrel member by the rotation operation of the wearer. Yes, And, The left and right loupe parts are arranged so as to incline inwardly with respect to each other. The eyepiece barrel member is provided with a first screwed cylinder part and an inner cylinder part disposed inside the first screwed cylinder part in a concentric and integral manner. An O-ring is externally fitted on the outer peripheral surface of the inner cylinder part. The O-ring is in close contact with the inner peripheral surface of the second screwed cylinder part when the first screwed cylinder part and the second screwed cylinder part are screwed together. When the first screwed cylinder part and the second screwed cylinder part rotate relative to each other, the O-ring serves as a resistance to stop the relative rotation between the first screwed cylinder part and the second screwed cylinder part. A binocular loupe device for medical use is characterized by this.

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