JP7109052B2 - Binocular Loupes and Binocular Loupe Devices - Google Patents

Description

The present invention relates to a binocular loupe and a binocular loupe device including the binocular loupe.

2. Description of the Related Art Binocular loupes called medical loupes, surgical loupes, surgical loupes, etc. are used in medical fields such as medical, ophthalmic, dental treatment, and surgical operations. By using a binocular loupe, you can see narrow and minute areas that cannot be observed in detail with normal naked eyes (not just with the naked eye, but also with contact lenses or glasses). Even if there is, the site can be enlarged and observed in detail (see Patent Document 1, for example).

FIG. 8 is a perspective view for explaining a conventional binocular loupe 910. FIG.
A conventional binocular loupe 910 has a bracket 920 and a pair of left and right lens barrels 930L and 930R attached to the bracket 920, as shown in FIG. By looking into the lens barrels 930L and 930R from the side of the eyepieces 932L and 932R, the user can enlarge and observe the observation target on the side of the objective lenses 933L and 933R within a predetermined range.

Japanese Patent Application Laid-Open No. 2005-257802

By the way, in the medical field, the observation function of the binocular magnifier may be impaired when the objective lens side becomes dirty due to splashes of bodily fluids, chemical liquids, and the like. In addition, there are cases where it is desired to change the optical characteristics of the binocular magnifier according to the situation and application during observation.

However, in the conventional binocular loupe 910, it is necessary to replace the objective lenses 933L and 933R fixed to the lens frames 931L and 931R by pressing parts or the like. is difficult. For this reason, the conventional binocular magnifier 910 can be used to restore the observation function when the observation function is impaired due to dirt on the objective lens side, or to adjust the optical characteristics of the binocular loupe according to the situation and application during observation. There is a problem that when it is desired to change, it is difficult to deal with it in a short time.

Therefore, the present invention has been made to solve the above-described problems. To provide a binocular magnifying glass for medical use which can be easily dealt with in a short time when the optical characteristics of the binocular loupe are desired to be changed according to the situation.

[1] A binocular loupe of the present invention is a medical binocular loupe used for magnifying and observing an observation object, comprising a bracket, a pair of lens barrels attached to the bracket, and the pair of lens mirrors. Two lenses corresponding to the barrel are formed, and a plate magnifier is detachably attached to the bracket so as to cover the observation target side of the pair of lens barrels during use. do.

[2] In the binocular loupe of the present invention, the bracket includes a lens barrel mounting portion for mounting the pair of lens barrels, a plate loupe mounting portion for mounting the plate loupe, and the lens barrel mounting portion. A plate magnifier position switching mechanism for switching between a use position and a retracted position of the plate magnifier includes the plate magnifier mounting part and the connecting part. preferably.

[3] In the binocular loupe of the present invention, a visual field changing member that, when covering at least a part of the peripheral part of the plate loupe on the observation target side, widens the field of view of the peripheral part to the outside; and a field-of-view changing member support attached to at least one of the lens barrels or the bracket to support the field-of-view changing member switchably between a use position and a retracted position. .

[4] Preferably, the field-of-view changing member is a prism.

[5] In this case, the prism is preferably a Fresnel type prism plate.

[6] In the binocular loupe of the present invention, at least one of a second plate loupe for changing the magnification of the binocular loupe and the pair of lens barrels when the observation target side of the plate loupe is covered. A second plate magnifier support may be further provided which is attached to the lens barrel or the bracket and supports the second plate magnifier switchably between a use position and a retracted position.

[7] In the binocular magnifier of the present invention, it is preferable that the plate magnifier has a notch or a hole formed at the boundary between the two lenses.

[8] In the binocular magnifying glass of the present invention, it is preferable that the bracket is formed with a device mounting portion for directly or indirectly mounting a lighting device or an imaging device toward the observation object.

[9] The binocular loupe device of the present invention comprises a stand, an arm having one or more joints and attached to the stand so that the tip portion can be freely moved to a desired position of the user, and the arm and a binocular loupe with the bracket fixed to the arm stay, wherein the binocular loupe has any one of the above [1] to [8] It is the binocular loupe described above.

[10] The binocular magnifying device of the present invention further includes lighting equipment or imaging equipment attached to the binocular loupe, and the arm has a hollow wire insertion portion through which an electric cable of the lighting equipment or imaging equipment can be inserted. is preferred.

[11] The binocular magnifying device of the present invention further includes a lighting device or an imaging device attached to the binocular loupe, and the arm includes wiring capable of fixing an electric cable of the lighting device or the imaging device along the arm. It is preferable to have a fixed part.

The binocular magnifier of the present invention has a plate magnifier attached to the bracket so as to cover the observation target side of the pair of lens barrels when in use. serves as a shield, and the objective lens side of the lens barrel is less likely to get dirty. Also, since the plate magnifier is detachably attached to the bracket, it can be replaced in a short time. Also, the plate loupe can be manufactured at a lower cost than the lens barrel. Therefore, it is realistic to configure the plate magnifier as a disposable part. As a result, according to the present invention, a medical binocular loupe that can be easily handled in a short time when the observation function is impaired due to the dirt on the objective lens side (plate loupe) is desired to be restored. can be provided.

In the binocular magnifier of the present invention, the plate magnifier is formed with two lenses corresponding to the pair of lens barrels, and the optical characteristics (magnification, working distance, depth of focus) corresponding to the power of the lens of the plate magnifier are etc.). In other words, if a plurality of types of plate loupes with different lens powers are prepared, the optical characteristics of the binocular loupe can be easily changed by exchanging the plate loupe. Also, as described above, the plate magnifier is detachably attached to the bracket, so that it can be replaced in a short period of time. As a result, according to the present invention, it is possible to provide a binocular magnifier for medical use that can be easily changed in a short time when it is desired to change the optical characteristics of the binocular magnifier according to the situation and application during observation.

1 is a perspective view of a binocular loupe 10 according to Embodiment 1. FIG. In FIG. 1, the part attached to the binocular loupe 10 is also drawn with a two-dot chain line. 3A and 3B are trihedral views of the binocular loupe 10 according to Embodiment 1. FIG. 2(a) is a top view, FIG. 2(b) is a front view, and FIG. 2(c) is a side view. In FIGS. 2(b) and 2(c), the part attached to the binocular loupe 10 is also drawn with a two-dot chain line. 4 is a side view showing a state in which the plate loupe 40 and the visual field changing member 50 of the binocular loupe 10 according to Embodiment 1 are switched to retracted positions. FIG. 1 is a diagram for explaining a binocular loupe device 1 according to Embodiment 1. FIG. FIG. 4(a) is a perspective view of the binocular loupe device 1. FIG. FIG. 4(b) is a diagram illustrating the wire insertion portion 72c of the arm 72. As shown in FIG. FIG. 4(c) is a diagram illustrating a wiring fixing portion 172c in the arm 172, which is a modified example. 4A and 4B are diagrams illustrating a procedure for attaching the plate loupe 40 according to the first embodiment; FIG. The mounting work is carried out in the order shown in FIGS. 5(a) to (b). 4A and 4B are diagrams illustrating a method of adjusting the width and angle of the lens barrel 30 of the binocular loupe 10 according to the first embodiment; FIG. FIG. 6(a) shows the width adjustment of the lens barrel 30. FIG. FIG. 6(b) shows the angle adjustment of the lens barrel 30. FIG. 11 is a perspective view of a binocular loupe 110 according to Embodiment 2. FIG. FIG. 11 is a perspective view for explaining a conventional binocular loupe 910;

A binocular loupe and a binocular loupe apparatus having the binocular loupe according to the present invention will be described below with reference to the drawings. A binocular loupe has loupes (magnifiers) corresponding to both eyes of the user. represent. Further, in the drawings, when "L" is attached after the reference numeral, it indicates that it is for the left eye of the user, and when "R" is attached after the reference numeral, it indicates that it is for the right eye of the user. Also, each drawing does not necessarily strictly reflect the actual dimensions.

[Embodiment 1]
1. Configuration of Binocular Loupe 10 According to Embodiment 1 FIG. 1 is a perspective view of a binocular loupe 10 according to Embodiment 1. FIG. In FIG. 1, the part attached to the binocular loupe 10 is also drawn with a two-dot chain line.
FIG. 2 is a trihedral view of the binocular loupe 10 according to the first embodiment. 2(a) is a top view, FIG. 2(b) is a front view, and FIG. 2(c) is a side view. In FIGS. 2(b) and 2(c), the part attached to the binocular loupe 10 is also drawn with a two-dot chain line.
FIG. 3 is a side view showing a state in which the plate loupe 40 and the visual field changing member 50 of the binocular loupe 10 according to Embodiment 1 are switched to their retracted positions.
The binocular loupe 10 according to Embodiment 1, as shown in FIGS. 50, and a field-of-view changing member support 60, a user looks into the lens barrel 30 to enlarge and observe an observation object on the side of the plate magnifier 40 in a medical field such as medical, ophthalmic, dental treatment, or surgical operation. It is an observation instrument for The binocular magnifier 10 is configured so that the plate magnifier 40 and the visual field changing member 50 can be switched between the use position and the retracted position. , the plate loupe 40 and the visual field changing member 50 are assumed to be in the use position.

A bracket connects two or more component parts together, and can be configured in various forms. As an example, in Embodiment 1, the bracket 20 is configured by combining a plurality of members. , to which two or more other parts can be attached. Specifically, the bracket 20 includes a lens barrel mounting portion 21 for mounting the pair of lens barrels 30, a plate loupe mounting portion 22 for mounting the plate magnifier 40, and a lens barrel mounting portion 21 and the plate magnifier. It has a connecting portion 23 that connects with the mounting portion 22 . Also, the bracket 20 is formed with a device mounting portion 24 for directly or indirectly mounting an external device such as a lighting device or an imaging device toward the observation target.

The lens barrel mounting portion 21 has a substantially rectangular parallelepiped shape with a certain thickness and extends in the left-right direction. The lens barrel mounting portion 21 is formed with elongated holes 21b at both left and right ends thereof through which the fixing screws 21a pass when the lens barrels 30L and 30R are mounted. Two fixing screws 21a are passed through each of the elongated holes 21b, and the length and width of the elongated holes 21b are set so that the fixing screws 21a can move within the elongated holes 21b to some extent.

The plate loupe mounting portion 22 includes a rotating shaft 22a, a knob 22b, and a fixed claw 22c.
The rotating shaft 22a has a substantially cylindrical shape and extends in the left-right direction. A plate magnifier mounting surface 22d that extends in the left-right direction (the axial direction of the rotating shaft 22a) and is machined into a flat shape is formed on a part of the periphery of the rotating shaft 22a.
The knob 22b has a substantially cylindrical shape and extends from the tip of the rotating shaft 22a in the left-right direction (the axial direction of the rotating shaft 22a). Knurling is formed around the knob 22b.
The fixed claw 22c is composed of a pair of members having the same shape, and is symmetrically spaced apart and fixed near the center of the plate magnifier mounting surface 22d of the rotating shaft 22a. The fixed claw 22c is a generally plate-shaped member extending along the plate loupe mounting surface 22d. The inner side of the fixed claw 22c on the plate loupe mounting surface 22d side when viewed as a pair is fixed to the plate loupe mounting surface 22d via an elastic member. As a result, the fixed claw 22c is slightly movable with respect to the plate loupe mounting surface 22c. In addition, when viewed as a pair on the surface of the fixed claw 22c on the side of the plate magnifier mounting surface 22d, there is a gap between the outer side and the plate magnifier mounting surface 22d, and a part of the projection protrudes toward the plate magnifier mounting surface 22d. (not shown) are formed.
Although the details will be described later, the plate magnifier mounting portion 22 holds the plate magnifier 40 by fitting a portion of the plate magnifier 40 into the gap between the plate magnifier mounting surface 22d and the fixed claw 22c. there is

The connecting portion 23 has a substantially rectangular parallelepiped shape with a certain thickness and extends in a direction perpendicular to the left-right direction. One end of the connecting portion 23 is fixed to the lens barrel mounting portion 21, and the other end is formed with a bearing portion 23a penetrating in the left-right direction through which the rotating shaft 22a is passed. A lock screw 23b is attached to the connecting portion 23 so as to hold the rotating shaft 22a passing through the bearing portion 23a. The connection portion 23 is combined with the plate magnifier mounting portion 22 to form a plate magnifier position switching mechanism. The plate magnifier position switching mechanism rotatably supports the rotary shaft 22a of the plate magnifier mounting portion 22 with the bearing portion 23a of the connecting portion 23. As shown in FIG. As a result, the plate magnifier 40 attached to the plate magnifier mounting portion 22 can be rotated in a direction perpendicular to the left-right direction to switch the use position and the retracted position of the plate magnifier 40 (the retracted position is See Figure 3).

The device mounting portion 24 is formed in the central portion of the lens barrel mounting portion 21 . In the first embodiment, since the illumination device 80 or the imaging device 90 is attached via the arm stay 73, which will be described later, the attachment surface of the arm stay 73 and the arm stay 73 are fixed to the device attachment portion 24. A hole for passing a screw is formed.

The lens barrel 30 is a pair of a lens barrel 30L for the user's left eye and a lens barrel 30R for the right eye. Each of the lens barrels 30L and 30R includes lens frames 31L and 31R, eyepiece lenses 32L and 32R fixed to one side of the lens frames 31L and 31R, and fixed to the other side of the lens frames 31L and 31R. It has objective lenses 33L and 33R. The lens barrels 30L and 30R are so-called Galilean optical systems each including an eyepiece lens and an objective lens, and are magnifiers called telescopes with an infinite working distance. The lens barrels 30L and 30R pass through long holes 21b formed in the lens barrel attachment portion 21 and are attached to the bracket 20 via spacers by fixing screws 21a sandwiching spring washers. In the following, the case corresponding to both the left and right will be explained by omitting the "L" and "R" after the reference numerals.

The lens frame 31 is formed by combining a plurality of substantially cylindrical tubes with their central axes aligned. It is configured. In the lens frame 31, an object side frame 31b is attached to the bracket 20, and the eyepiece side frame 31a can be changed in the axial direction with respect to the object side frame 31b. The lens frame 31 has a flat bracket mounting surface 31c formed on a part of the side surface thereof. On the side surface of the lens frame 31, the option mounting surface is machined into a plane at a position axially rotated by 90° with respect to the bracket mounting surface 31c (the lens frame 31L and the lens frame 31R are rotated in the opposite direction). 31d is formed.

The eyepiece lens 32 is a spherical glass lens and is fixed within an eyepiece side frame 31 a of the lens frame 31 . The objective lens 33 is a spherical glass lens and is fixed inside the objective side frame 31 b of the lens frame 31 .

The plate magnifying glass 40 is a thin plastic convex lens integrally formed with two lenses 41 (41L, 41R) corresponding to the pair of lens barrels 30L, 30R (the optical axes of which are arranged to coincide with or be close to each other). be. The side surface of the plate magnifier 40 that is to be attached to the plate magnifier attachment portion 22 of the bracket 20 is processed to be flat. In addition, the plate magnifier 40 is formed with fitting projections 42 protruding in a gate shape at two positions on the left and right sides of the side surface of the bracket 20 to be attached to the plate magnifier mounting portion 22 . The plate loupe 40 also has a notch or hole 43 (the notch 43 in FIG. 1) formed at the boundary between the two lenses 41L and 41R. The notch or hole 43 is formed so that the illumination light from the lighting device 80 and the incident light to the imaging device 90 are not shaded when the lighting device 80 and the imaging device 90, which will be described later, are arranged between the lens barrels 30L and 30R. is provided.
The optical characteristics of the plate loupe 40 may be appropriately set so that the binocular loupe 10 has desired optical characteristics in consideration of the combination with the lens barrel 30 . As an example, the plate loupe 40 may be formed with a magnification of 1.7 times and combined with the lens barrel 30 to form the binocular loupe 10 with a magnification of 2.6 times and a working distance of 40 cm to 100 cm. . Alternatively, the plate loupe 40 may be formed with a magnification of 2× and combined with the lens barrel 30 of the previous example to form the binocular loupe 10 with a magnification of 3× and a working distance of 30 cm to 45 cm.

The field-of-view changing member 50 is a Fresnel type plastic prism plate (a thin plate formed by dividing a normal optical component into strip-shaped or concentric regions and offsetting the surfaces). The field-of-view changing member 50 has a Fresnel surface facing the plate magnifier 40 side, and covers at least a part of the periphery of the plate magnifier 40 on the observation target side (covers a part of the left periphery in FIG. 1), It is arranged in such a direction that the peripheral field of view through the field of view changing member 50 spreads outward. Supplementally, since the prism bends the light passing through it, depending on the direction in which it is arranged, the outside can be seen more than when the field-of-view changing member 50 is not arranged. The angle of the slope of the prism surface may be appropriately set according to the field of view to be widened.

The visual field changing member support 60 includes a visual field changing member supporting base portion 61 attached to at least one of the lens barrels 30L and 30R (the lens barrel 30L for the left eye in FIG. 1); It has a field-of-view changing member supporting temple portion 62 extending from a field-of-view changing member supporting base portion 61 and a field-of-view changing member holding portion 63 fixed to the distal end of the field-of-view changing member supporting temple portion 62 to hold the field-of-view changing member 50 . .

The field-of-view changing member support base portion 61 is a substantially rectangular parallelepiped block having a flange, and is attached to the option attachment surface 31d of the lens frame 31 by fixing the flange portion with a fixing screw. The field-of-view changing member supporting base portion 61 is formed with a pin 61a projecting cylindrically from the outer surface and a screw hole near the pin 61a.

The field-of-view changing member supporting temple portion 62 has an elongated substantially rectangular parallelepiped shape and extends in a direction perpendicular to the left-right direction so as to cross the side of the plate loupe 40 . The visual field changing member supporting temple portion 62 is formed with a pin notch 62 a that can be sandwiched between the pins 61 a of the visual field changing member supporting base portion 61 at the root side end. Further, in the field-of-view changing member supporting temple portion 62, an angle fixing long hole 62b is formed in the vicinity of the pin notch 62a. As shown in FIG. 2(c), the field-of-view changing member supporting temple portion 62 is passed through the angle fixing oblong hole 62b in a state in which the pin notch 62a sandwiches the pin 61a of the field-of-view changing member supporting base portion 61. The field-of-view changing member 50 is fixed at the angular position corresponding to the use position by a fixing screw 61b screwed into the threaded hole of the field-of-view changing member supporting base portion 61. As shown in FIG. Further, the visual field changing member supporting temple portion 62 is screwed into the screw hole of the visual field changing member supporting base portion 61 in a state in which the pin notch 62a does not pinch the pin 61a of the visual field changing member supporting base portion 61. By rotating around the fixing screw 61b, the visual field changing member 50 as shown in FIG. 3 can be switched to the retracted position.

The field-of-view changing member holding portion 63 is fixed to the distal end portion of the field-of-view changing member support temple portion 62 , extends along the outer side surface of the field-of-view changing member 50 , and extends along two outer corners of the field-of-view changing member 50 . The visual field changing member 50 is held by being fixed with a fixing screw.

2. Configuration of the Binocular Loupe Device 1 According to the First Embodiment FIG. 4 is a diagram for explaining the binocular loupe device 1 according to the first embodiment. FIG. 4(a) is a perspective view of the binocular loupe device 1. FIG. FIG. 4(b) is a diagram illustrating the wire insertion portion 72c of the arm 72. As shown in FIG. FIG. 4(c) is a diagram illustrating a wiring fixing portion 172c in the arm 172, which is a modified example.
As shown in FIGS. 4A and 4B (see FIG. 1 as well), the binocular loupe device 1 according to the first embodiment includes the above-described binocular loupe 10, a mounting table 70, and an illumination device 80. , and an imaging device 90 .

The installation table 70 includes a stand 71, an arm 72, and an arm stay 73, and positions the binocular magnifier 10, the illumination device 80, and the imaging device 90 at predetermined positions and positions so that the user can easily observe the observation target. Orientation is supported.

The stand 71 consists of a base 71a with casters attached to its lower surface and a pole 71b extending upward from the upper surface of the base 71a, and is installed on the floor.

The base of the arm 72 is attached to a pole 71b of the stand 71 so as to be vertically movable and rotatable about the pole 71b. The arm 72 is a so-called multi-joint arm having multiple joints J1 to J4. The arm 72 has a gate-shaped tip portion 72a. The arm 72 has a rod-shaped grip 72b protruding from the base side of the distal end portion 72a so that the user can easily grip it. The arm 72 is configured such that the tip portion 72a can be moved to a desired position by the user gripping and moving the grip 72b. The arm 72 has a tip portion 72a formed of a hollow pipe member, and the inner side of the tip portion 72a serves as a wire insertion portion 72c through which a wire or the like can be inserted.

The arm stay 73 is an elongated substantially rectangular parallelepiped block member, and is held at the tip end portion 72 a of the arm 72 . The bracket 20 of the binocular loupe 10 is fixed to the arm stay 73 on the side opposite to the side held by the arm 72 (see FIG. 1).

The lighting device 80 is a device that irradiates illumination light toward an observation target, and is arranged between the lens barrels 30L and 30R via a lighting device fixture 81 (see FIG. 2). It is attached to the arm stay 73 . Illumination light from the illumination device 80 passes through the notch 43 of the plate magnifier 40 and irradiates the observation target. Also, the electric cable 80a of the lighting device 80 is inserted through the wire insertion portion 72c of the arm 72 and wired.

Imaging device 90 is a camera that includes a tip-mounted lens and records still or moving images. The imaging device 90 is attached to the arm stay 73 via an imaging device fixture 91 . The imaging device 90 is configured to be able to adjust the tilt and the like by means of an imaging device fixture 91 so as to capture an observation target. Also, the electric cable 90a of the imaging device 90 is inserted through the wiring insertion 72c of the arm 72 and wired.

3. How to use the binocular loupe device 1 according to the first embodiment Although different depending on the medical site, the binocular loupe device 100 is generally used as follows. In some cases, work such as sterilization may be required, but the description of the work such as sterilization is omitted.

(1) Setting the Plate Loupe 40 FIGS. 5A and 5B are diagrams for explaining the procedure for attaching the plate loupe 40 according to the first embodiment. The mounting work is carried out in the order shown in FIGS. 5(a) to (b).
First, the plate loupe 40 is attached to the bracket 20 . When a plurality of plate magnifiers with different optical characteristics are prepared, the contents of observation to be planned are examined, and the plate magnifier 40 with the optical characteristics suitable for observation is selected and attached to the bracket 20 . To attach the plate magnifier 40 to the bracket 20, first, as shown in FIG. The fitting protrusion 42 corresponding to the plate magnifying glass 40 held in the hand is inserted into the gap between the fixing claw 22c with the finger and the plate magnifying glass mounting surface 22d. After confirming that the inserted fitting projection 42 has been fitted into the fixing claw 22c, as shown in FIG. It is inserted into the gap between the fixed claw 22c and the plate loupe mounting surface 22d. After confirming that the fitting protrusion 42 inserted later has been fitted into the fixing claw 22c on the side of the knob 22b, the work of attaching the plate loupe 40 to the bracket 20 is completed.
To remove the plate loupe 40 from the bracket 20, open the knob 22b side to both sides and remove the fitting projection 42 on the knob 22b side, then open the far side from the knob 22b and remove the fitting projection 42 on the other side. good.

(2) Adjustment of Interpupillary Width and Angle of Lens Barrel 30 FIGS. 6A and 6B are diagrams for explaining a method of adjusting the width and angle of the lens barrel 30 of the binocular loupe 10 according to the first embodiment. FIG. 6(a) shows the width adjustment of the lens barrel 30. FIG. FIG. 6(b) shows the angle adjustment of the lens barrel 30. FIG.
Next, the width of the lens barrel 30 is adjusted as shown in FIG. 6A, and the angle of the lens barrel 30 is adjusted as shown in FIG. conduct. In Embodiment 1, the lens barrel 30 is attached to the bracket 20 with a fixing screw 21a with a spring washer interposed therebetween, and is held in position by the reaction force of the spring washer. For this reason, any adjustment is performed by manually applying a force greater than the force held by the lens barrels 30L and 30R to move the lens barrels in the horizontal direction indicated by the arrows in FIG. 6(a), or in FIG. 6(b). Adjust to the desired width or angle by rotating inwards and outwards as indicated by the arrows.

(3) Setting of the visual field changing member 50 Next, the observation content to be planned is examined, and the visual field changing member 50 is attached to the side where the visual field is desired to be widened, such as the side where the assistant is positioned.

(4) Adjusting the position of the binocular loupe 10 Next, move the arm 72 up and down with respect to the stand 71, or grip and move the grip 72b of the arm 72 to adjust the position and orientation of the binocular loupe 10 for easy observation. (see Figure 4a).

(5) Observation of Observation Target and Adjustment During Observation Next, the user looks into the binocular loupe 10 from the side of the eyepiece 32 to enlarge and observe the observation target. The user appropriately adjusts replacement of the plate lens 40, switching between the use position and the retracted position of the plate lens 40, switching between the retracted position and the use position of the visual field changing member 50, and the like, according to the situation. For example, if the plate lens 40 becomes dirty during observation and interferes with observation, the plate lens 40 is replaced with a new one. If the optical characteristics of the binocular loupe 10 are to be changed during observation, the plate lens 40 is switched to the retracted position or the plate lens 40 is replaced with a plate lens having different optical characteristics. Further, when there is no need to widen the visual field range during observation, the visual field changing member 50 is switched to the retracted position. In addition, the grip 72b of the arm 72 is gripped to change the observation point.

4. Effect of Embodiment 1 The binocular magnifier 10 according to Embodiment 1 includes the plate magnifier 40 attached to the bracket 20 so as to cover the observation target side of the pair of lens barrels 30 during use. The plate loupe 40 serves as a shield against splashes of bodily fluids, chemicals, etc., and the objective lens side of the lens barrel 30 is less likely to get dirty. Further, since the plate loupe 40 is detachably attached to the bracket 20, it can be replaced in a short time. Also, the plate loupe 40 can be manufactured at a lower cost than the lens barrel 30 . Therefore, it is realistic to construct the plate loupe 40 as a disposable part. As a result, according to the first embodiment, when the observation function is impaired due to the dirt on the objective lens side (plate magnifier), the medical binocular can be easily recovered in a short time. A loupe can be provided.

In the binocular loupe 10 according to the first embodiment, the plate loupe 40 is formed with two lenses 41 (41L, 41R) corresponding to the pair of lens barrels 30, and the power of the lens 41 of the plate loupe 40 is It is possible to configure the binocular loupe 10 with corresponding optical characteristics (magnification, working distance, depth of focus, etc.). In other words, if a plurality of types of plate loupes 40 having lenses 41 with different powers are prepared, the optical characteristics of the binocular loupe 10 can be easily changed by exchanging the plate loupe 40 . Further, as described above, the plate magnifying glass 40 is detachably attached to the bracket 10, so that it can be replaced in a short period of time. As a result, according to the first embodiment, it is possible to provide a medical binocular loupe that can be easily changed in a short period of time when it is desired to change the optical characteristics of the binocular loupe according to the situation and application during observation.

Further, in the binocular loupe 10 according to the first embodiment, the plate loupe mounting portion 22 and the joint portion 23 of the bracket 20 constitute a plate loupe position switching mechanism for switching the use position and the retracted position of the plate loupe 40 . Therefore, when it is determined that observation with only the lens barrel 30 is more suitable for the situation than observation with the binocular loupe 10 through the plate magnifier 40, the binocular loupe is retracted and observation is switched to observation with only the lens barrel 30. make it possible. As a result, it is possible to provide a medical binocular magnifier that is easy to adapt to usage conditions.

Further, the binocular loupe 10 according to the first embodiment includes the field-of-view changing member 50 that covers a part of the periphery of the plate loupe 40 in the position of use and widens the field of view of the periphery outward. It is possible to detect movement in a range farther away from the observation target. For example, it is possible to sense a scalpel or the like brought out by a third party during an operation from a position safely away from the operator's hand. This makes it possible to provide a medical binocular loupe that allows safer observation.
Further, the binocular loupe 10 according to the first embodiment is attached to at least one of the pair of lens barrels 30L and 30R or to the bracket 20, and supports the visual field changing member 50 so as to be switchable between the use position and the retracted position. Since the field-of-view changing member support 60 is provided, the field-of-view changing member 50 can be retracted when there is no need to widen the peripheral field of view. As a result, it is possible to provide a medical binocular magnifier that is easy to adapt to usage conditions.

Further, in Embodiment 1, since the visual field changing member 50 is a prism, the peripheral visual field can be widened according to the angle of the prism surface. A prism is preferable as the visual field changing member 50 because it is easy to match the desired peripheral visual field range simply by setting the angle of the prism surface.

Further, in Embodiment 1, the field-of-view changing member 50 is a Fresnel type prism plate, so it is formed thin and light. Therefore, switching between the use position and the retracted position of the field-of-view changing member 50 can be easily performed, and the compact plate magnifier 10 can be configured.

Further, in the first embodiment, the plate magnifier 40 has a notch or hole 43 formed at the boundary between the two lenses 41 (41L, 41R). This makes it possible to irradiate the observation target with illumination light that is less inclined with respect to the optical axis of the lens barrel 30 . As a result, it is possible to reduce shadows on the observation target and perform clear observation.

Further, in Embodiment 1, the bracket 20 is formed with the device mounting portion 24 for directly or indirectly mounting the lighting device 80 or the imaging device 90 toward the observation target. , the positional relationship of the illumination device 80 or the imaging device 90 can be kept constant. This enables stable observation or stable recording.

The binocular magnifying device 1 according to the first embodiment includes a stand 71, an arm 72 attached to the stand 71 and having a distal end portion 72a movable to a desired position of the user, and a distal end portion of the arm 72. Since the arm stay 73 held by 72a and the binocular magnifier 10 having the bracket 20 fixed to the arm stay 73 are provided, the binocular magnifier 10 can be arranged at a spatial position desired by the user. person does not need to wear it. As a result, the binocular loupe 10 with various effects can be used easily.

In Embodiment 1, the arm 72 has a hollow wiring insertion portion 72c through which the electric cable 80a of the lighting device 80 or the electric cable 90a of the imaging device 90 can be inserted. Wiring is processed neatly along. As a result, it is possible to avoid the possibility that the wiring will interfere with the observation.

[Embodiment 2]
1. Configuration of Binocular Loupe 110 According to Second Embodiment FIG. 7 is a perspective view of the binocular loupe 110 according to the second embodiment.
As shown in FIG. 7, the binocular loupe 110 according to the second embodiment includes a bracket 20, a pair of left and right lens barrels 30 (30L, 30R), a plate loupe 40, a second plate loupe 140, and a second plate loupe support. 160 , the user looks into the lens barrel 30 to magnify and observe an object to be observed on the side of the plate loupe 40 . The binocular loupe 110 according to the second embodiment includes the field changing member 50 of the binocular loupe 10 according to the first embodiment and the field changing member support 60 for supporting the field changing member 50 in a second plate loupe 140 and the second plate. It is replaced with a second plate magnifying glass support 160 that supports the magnifying glass 140 . In the following, the parts replaced with respect to the binocular loupe 10 will be explained, and the explanation of other parts will be omitted. The switching between the use position and the retracted position of the second plate loupe 140 is the same as that of the visual field changing member 50 of the first embodiment. Also, the binocular loupe 110 is attached to the bracket 20 on the side opposite to the side on which the lens barrel 30 is attached to the illumination 80 .

The second plate magnifying glass 140 is a thin plate-shaped plastic integrally formed with two lenses 141 (141L, 141R) corresponding to the pair of lens barrels 30L, 30R (the optical axes are arranged to coincide with or be close to each other). is the lens. The optical characteristics of the plate magnifier 140 may be appropriately set so that the binocular loupe 110 has desired optical characteristics in consideration of the combination with the lens barrel 30 and the plate magnifier 40 . At this time, neither the plate loupe 40 nor the second plate loupe 40 is retracted, only the plate loupe 40 is retracted, only the second plate loupe 140 is retracted, and both the plate loupe 40 and the second plate loupe 140 are retracted. However, in either case, it is preferable to be able to set it so that it can be used as an optical loupe.

The second plate magnifier support 160 includes a second plate magnifier support base portion 161 attached to at least one of the lens barrels 30L and 30R (both lens barrels 30L and 30R in FIG. 7). a second plate magnifier support temple portion 162 extending from the second plate magnifier support base portion 161; 163. The second plate magnifier support base portion 161 and the second plate magnifier support temple portion 162 are the same as the field-of-view changing member supporting base portion 61 and the field-of-view changing member supporting temple portion 62 of the first embodiment, and therefore description thereof is omitted.

Each of the second plate magnifier holding portions 163 holds the second plate magnifier 140 by fixing the outer edge of the second plate magnifier 140 with a fixing screw.

2. Effect of Second Embodiment The binocular loupe 110 according to the second embodiment covers the plate loupe 40 in the use position, and includes the second plate loupe 140 that changes the magnification of the binocular loupe 110 and the pair of lens barrels 30L and 30R. A second plate magnifier support 160 is provided which is attached to at least either the lens barrel or the bracket 20 and supports the second plate magnifier 140 so as to be switchable between the use position and the retracted position. For this reason, the binocular loupe 110 can be used depending on the situation when observing through the plate loupe 40, when observing through the second plate loupe 140, when observing through the plate loupe 40 and the second plate loupe 140, and when observing through the plate loupe 40 and the second plate loupe 140. By switching the observation without passing through the two-plate loupe 140, it is possible to switch the optical characteristics such as magnification. As a result, it is possible to provide a medical binocular magnifier that is easy to adapt to usage conditions.

Although the present invention has been described based on the above embodiments, the present invention is not limited to the above embodiments. It can be implemented in various aspects without departing from the spirit thereof, and for example, the following modifications are also possible.

(1) The number, materials, shapes, positions, sizes, angles, optical characteristics, etc. of the constituent elements described in the above embodiments are examples, and can be changed within a range that does not impair the effects of the present invention.

(2) The binocular loupe 10 according to Embodiment 1 is configured such that the illumination device 80 or the imaging device 90 is indirectly attached to the device attachment portion 24 of the bracket 20 via the arm stay 73. is not limited to this. For example, the bracket may be configured to have a mounting portion for the lighting device 80 or the imaging device 90 so that the lighting device 80 or the imaging device 90 can be directly mounted.

(3) In the first embodiment, the plate magnifier mounting portion 22 of the bracket 20 has the plate magnifier 40 mounted thereon by fitting the fitting protrusion 42 of the plate magnifier 40 into the gap between the plate magnifier mounting surface 22d and the fixed claw 22c. However, the present invention is not limited to this. For example, the plate magnifier may be mounted by screwing or clipping a part of the plate magnifier to the plate magnifier mounting portion 22 .

(4) In the first embodiment, the plate magnifier position switching mechanism has a structure in which the plate magnifier mounting portion 22 is rotatably supported by the connecting portion 23, and the plate magnifier 40 is rotated in a direction perpendicular to the left-right direction. Although the use position and the retracted position of the plate magnifier 40 are switchable, the present invention is not limited to this as long as the plate magnifier 40 can be switched between the use position and the retracted position. . For example, the plate magnifier switching mechanism may have a structure in which the plate magnifier mounting portion can be slid with respect to the connecting portion, and the plate magnifier can be switched between the use position and the retracted position by sliding the plate magnifier. . In addition, even if the plate magnifier switching mechanism has a structure in which the plate magnifier mounting portion can be attached to and detached from the connecting portion, and the plate magnifier 40 can be switched between the use position and the retracted position by attaching and detaching the plate magnifier. good.

(5) In Embodiment 1, the lens barrel 30 is a so-called Galilean optical system including the eyepiece 32 and the objective lens 33, but the present invention is not limited to this. For example, the lens barrel may be of a so-called Keplerian type (prism type) composed of an objective lens, a prism, and an eyepiece. An intermediate lens may be included between the eyepiece lens and the objective lens.

(6) In the first embodiment, the lens barrel 30 has an optical characteristic of an infinite working distance called a telescope, but the present invention is not limited to this. For example, the lens barrel may be a magnifying glass with a finite working distance, and the working distance may be changed by attaching a plate loupe.

(7) In Embodiment 1, the eyepiece lens 32 and the objective lens 33 of the lens barrel 30 are spherical glass lenses, but the present invention is not limited to this. For example, the eyepiece lens or objective lens may be a lens other than a general spherical lens such as a cemented lens, an aspherical lens, or a Fresnel lens. Moreover, a plastic lens may be used.

(8) In Embodiment 1, the field-of-view changing member 50 is a Fresnel type plastic prism plate, but the present invention is not limited to this. For example, the field-of-view changing member may be a block-shaped prism instead of a Fresnel type prism plate, or may be a glass member. Also, the field-of-view changing member may be a bending lens, a half mirror, or a mirror.

(9) In Embodiment 1, the field-of-view changing member 50 covers the left peripheral portion of the plate loupe 40 to widen the field of view outward (to the left), but the present invention is not limited to this. For example, if you want to widen your peripheral vision on the lower side, you can place a visual field changing member on the lower side, and if you want to widen your peripheral vision on both the left and right sides, you can place two visual field changing members on both the left and right sides. good.

(10) In the first embodiment, the field-of-view changing member supporter 60 holds the field-of-view changing member 50 in the field-of-view changing member holding portion 63 with a fixing screw. Further, in Embodiment 2, the second plate magnifier support 160 holds the second plate magnifier 140 on the second plate magnifier holding portion 163 with a fixing screw, but the present invention is not limited to this. do not have. For example, a claw may be formed in the visual field changing member holding portion, and the visual field changing member holding portion may hold the visual field changing member 50 by fitting a part of the visual field changing member 50 into the claw. Further, the second plate magnifier holding portion is formed with claws, and the second plate magnifier holding portion holds the second plate magnifier 140 by fitting a part of the second plate magnifier 140 into the claws. good too.

(11) The field-of-view changing member support 60 in Embodiment 1 or the second plate loupe support 160 in Embodiment 2 is attached to the lens barrel 30, but the present invention is not limited to this. For example, it may be attached to the bracket 10 .

(12) The field-of-view changing member support 60 in Embodiment 1 or the second plate loupe support 160 in Embodiment 2 rotates with respect to the lens barrel 30 so that the field-of-view changing member 50 or the second plate loupe 140 can be used. Although the position and the retracted position are switched, the present invention is not limited to this. For example, by sliding the field-of-view changing member support 60 or the second plate loupe support 160 with respect to the lens barrel 30, the field-of-view changing member 50 or the second plate loupe 140 can be switched between the use position and the retracted position. There may be. Further, by making the field-of-view changing member support 60 or the second plate loupe support 160 detachable from the lens barrel 30, the field-of-view changing member 50 or the second plate loupe 140 can be switched between the use position and the retracted position. can be anything.

(13) The plate magnifier 40 in Embodiment 1 or the second plate magnifier 140 in Embodiment 2 is a thin plastic convex lens, but the present invention is not limited to this. For example, the plate loupe may be made of glass, or may be a concave lens if it can form a magnifying glass when combined with other optical components. Moreover, it may be a Fresnel lens.

(14) In the second embodiment, the second plate magnifying glass 140 has two lenses 141 (141L, 141R) integrally formed, but the present invention is not limited to this. For example, the left and right lenses may be separated so that the overall width and angle (particularly inward and outward) can be adjusted.

(15) In Embodiment 1, the arm 72 is a multi-joint arm, but the user only needs to be able to move the distal end portion 72a to a desired position according to the intended use, and the present invention is limited to this. is not. For example, a flexible joint may be adopted as the joint, and the tip may be moved with a high degree of freedom even with one joint.

(16) The binocular loupe device 1 according to the first embodiment is wired by inserting the electric cable 80a of the lighting device 80 and the electric cable 90a of the imaging device 90 into the wire insertion portion 72c of the arm 72. The following modification is also effective in order to obtain the effect of not interfering with observation. In this modification, as shown in FIG. 4(c), a wire fixing portion 172c for fixing the electric cable 80a of the lighting device 80 or the electric cable 90a of the imaging device 90 is provided along the arm 172. . The wiring fixing part 172c is not particularly limited as long as it can fix the wiring, but for example, it may be a cable band to which a cable can be attached and detached.

(17) The binocular loupe 10 according to Embodiment 1 is installed on the floor by the stand 71 in the binocular loupe device 1, but the present invention is not limited to this. For example, ear hooks may be attached to the bracket and worn by the user like eyeglasses.

REFERENCE SIGNS LIST 1 Binocular loupe device 10, 110 Binocular loupe 20 Bracket 21 Lens barrel mounting portion 22 Plate loupe mounting portion 23 Connecting portion 24 Device mounting portion 30 (30L, 30R) Lens barrel 40 Plate loupe 41 (41L, 41R) Lens (of plate loupe) 43 Notch or hole 50 Visual field changing member 60 Visual field changing member support 70 Installation base 71 ... Stand 72, 172 ... Arm 72a, 172a ... Tip (of arm) 72c ... Wiring insertion portion 172c ... Wiring fixing portion 73 ... Arm stay 80 ... Lighting device 80a ... Electricity (of lighting device) Cable 90 Imaging device 90a Electric cable (of imaging device) 140 Second plate loupe 160 Second plate loupe support J1 to J4 Joints (of arm)

Claims (9)

A medical binocular loupe used for magnifying and observing an observation target,
a bracket;
a pair of lens barrels attached to the bracket;
a plate loupe having two lenses corresponding to the pair of lens barrels and detachably attached to the bracket so as to cover the observation target side of the pair of lens barrels during use ;
a field-of-view changing member that expands a field of view of a part of the periphery of the plate magnifying glass outward when covering at least a part of the periphery of the plate magnifier on the observation target side;
and a field-of-view changing member support that is attached to at least one of the pair of lens barrels or the bracket and supports the field-of-view changing member so as to be switchable between a use position and a retracted position. Binocular magnifying glass. The bracket is
a lens barrel mounting portion for mounting the pair of lens barrels;
a plate magnifier mounting portion for mounting the plate magnifier;
a connecting portion connecting the lens barrel mounting portion and the plate loupe mounting portion;
2. The binocular loupe according to claim 1, wherein a plate loupe position switching mechanism for switching between the use position and the retracted position of the plate loupe includes the plate loupe mounting portion and the connecting portion. 3. The binocular magnifying glass according to claim 1 , wherein said visual field changing member is a prism. 4. A binocular loupe according to claim 3 , wherein said prism is a Fresnel type prism plate. The binocular loupe according to any one of claims 1 to 4 , wherein the plate loupe has a notch or a hole formed at the boundary between the two lenses. 6. The bracket according to any one of claims 1 to 5 , wherein the bracket is formed with a device mounting portion for directly or indirectly mounting a lighting device or an imaging device toward the observation object. Binocular Loupe. a stand;
an arm having one or more joints and configured to be attached to the stand so that the tip portion can be moved to a desired position of the user;
an arm stay held at the tip of the arm;
A binocular loupe device comprising a binocular loupe in which the bracket is fixed to the arm stay,
A binocular loupe device, wherein the binocular loupe is the binocular loupe according to any one of claims 1 to 6 . further comprising a lighting device or imaging device attached to the binocular loupe;
8. The binocular magnifying device according to claim 7 , wherein the arm has a hollow wire insertion portion through which an electric cable of the lighting equipment or the imaging equipment can be inserted. further comprising a lighting device or imaging device attached to the binocular loupe;
8. The binocular magnifying device according to claim 7 , wherein the arm has a wiring fixing portion capable of fixing an electric cable of the lighting device or the imaging device along the arm.

Images