JP2019184805A - Binocular loupe and binocular loupe device - Google Patents

Abstract

To provide a medical binocular loupe which can respond quickly to a case where the observation function is compromised by dirt on an objective lens side and needs to be recovered or a case where the optical characteristics of the binocular loupe needs to be changed according to the situation or the application during an observation.SOLUTION: A binocular loupe 10 includes: a bracket 20; a pair of lens barrels 30 attached to the bracket 20; and a plate loupe 40 having two lenses 41 corresponding to a pair of barrels 30, the plate loupe being removably attached to the bracket 20 to cover the protection target side of the pair of barrels 30 when the plate loupe is being used.SELECTED DRAWING: Figure 1

Description

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

  Binocular loupes called medical loupes, surgical loupes, surgetel loupes, and the like are used in medical fields such as medical treatment, ophthalmology, dental treatment, and surgery. By utilizing a binocular loupe, it is possible to use a narrow and fine area that cannot be observed in detail if it is in the normal naked eye state (including not only purely naked eye but also wearing contact lenses or glasses). Even if it exists, the said site | part can be expanded and it can observe in detail (for example, refer patent document 1).

FIG. 8 is a perspective view for explaining a conventional binocular loupe 910.
As shown in FIG. 8, the conventional binocular loupe 910 includes a bracket 920 and a pair of left and right lens barrels 930 </ b> L and 930 </ b> R attached to the bracket 920. The user can enlarge and observe the observation target on the objective lens 933L, 933R side within a predetermined range by looking into the lens barrels 930L, 930R from the eyepiece lens 932L, 932R side.

JP 2005-257802 A

  By the way, in the medical field, the observation function of the binocular loupe may be impaired when the objective lens side is contaminated with splashes of body fluids or chemicals. In some cases, it is desired to change the optical characteristics of the binocular loupe during observation according to the situation and application.

  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 respectively by pressing parts or the like. Therefore, the objective lenses 933L and 933R can be replaced in a short time. Is difficult. For this reason, the conventional binocular loupe 910 provides the optical characteristics of the binocular loupe according to the situation and application when it is desired to restore the observation function when the observation function is impaired due to contamination of the objective lens side. There is a problem that it is difficult to cope with changes in a short time.

  Therefore, the present invention has been made to solve the above-described problem, and when the observation function is impaired when the objective lens side is soiled, the observation function is restored, or the situation / use during observation An object of the present invention is to provide a medical binocular loupe that is easy to deal with in a short time when the optical characteristics of the binocular loupe are to be changed according to the situation.

[1] The binocular loupe of the present invention is a medical binocular loupe used for magnifying and observing an observation target, and includes a bracket, a pair of lens barrels attached to the bracket, and the pair of lens mirrors. Two lenses corresponding to the tube are formed, and a plate loupe is detachably attached to the bracket so as to cover the observation target side of the pair of lens barrels when used. To 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. A plate loupe position switching mechanism that switches between a use position and a retracted position of the plate loupe including the plate loupe mounting part and the linking part. Preferably it is.

[3] In the binocular loupe according to the present invention, when at least a part of the peripheral part of the plate loupe on the observation target side is covered, a visual field changing member that expands a part of the visual field of the peripheral part to the outside, and the pair It is preferable to further include a field-of-view changing member support that is attached to at least one of the lens barrels or the bracket and supports the field-of-view changing member in a switchable manner between a use position and a retracted position. .

[4] It is preferable that the visual field 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, when the observation target side of the plate loupe is covered, a second plate loupe that changes the magnification of the binocular loupe and at least one of the pair of lens barrels A second plate loupe support that is attached to the lens barrel or the bracket and supports the second plate loupe so as to be switchable between a use position and a retracted position may be further provided.

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

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

[9] A binocular loupe device according to the present invention includes a stand, an arm having one or a plurality of joints, the arm attached to the stand and configured to be freely movable to a user's desired position, and the arm A binocular loupe device comprising: an arm stay held at the tip of the binocular loupe; and a binocular loupe having the bracket fixed to the arm stay, the binocular loupe according to any one of [1] to [8] The binocular loupe is described.

[10] The binocular loupe device of the present invention further includes a lighting device or an imaging device attached to the binocular loupe, and the arm has a hollow wiring insertion portion into which an electric cable of the lighting device or the imaging device can be inserted. It is preferable.

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

  The binocular loupe of the present invention includes a plate loupe attached to the bracket so as to cover the observation target side of the pair of lens barrels in use. Becomes a shield, and the objective lens side of the lens barrel is difficult to get dirty. Further, since the plate loupe is detachably attached to the bracket, it can be replaced in a short time. Further, the plate loupe can be formed at a lower cost than the lens barrel. For this reason, it is realistic to configure the plate loupe as a disposable part. As a result, according to the present invention, when it is desired to restore the observation function when the observation function is impaired due to contamination of the objective lens side (plate loupe), a medical binocular loupe that can be easily handled in a short time. Can be provided.

  In addition, the binocular loupe of the present invention is formed with two lenses corresponding to a pair of lens barrels on the plate loupe, and optical characteristics (magnification, working distance, depth of focus) according to the power of the lens of the plate loupe. Or the like). That is, if a plurality of types of plate magnifiers having different lens powers are prepared, the optical characteristics of the binocular magnifier can be easily changed by exchanging the plate magnifiers. As described above, since the plate loupe is detachably attached to the bracket, it can be replaced in a short time. As a result, according to the present invention, it is possible to provide a medical binocular loupe that can be easily handled in a short time when it is desired to change the optical characteristics of the binocular loupe according to the situation / use during observation.

1 is a perspective view of a binocular loupe 10 according to Embodiment 1. FIG. In FIG. 1, a portion attached to the binocular loupe 10 is also drawn with a two-dot chain line. 1 is a three-view diagram of a binocular loupe 10 according to Embodiment 1. FIG. 2A is a top view, FIG. 2B is a front view, and FIG. 2C is a side view. In FIG. 2B and FIG. 2C, the part attached to the binocular loupe 10 is also drawn with a two-dot chain line. It is a side view which shows the state which switched the plate loupe 40 and the visual field change member 50 of the binocular loupe 10 which concern on Embodiment 1 to the retracted position. It is a figure explaining the binocular loupe device 1 concerning Embodiment 1. FIG. FIG. 4A is a perspective view of the binocular loupe device 1. FIG. 4B is a diagram illustrating the wiring insertion portion 72 c in the arm 72. FIG. 4C is a diagram illustrating the wiring fixing portion 172c in the arm 172 which is a modified example. It is a figure explaining the attachment procedure of the plate loupe 40 in Embodiment 1. FIG. The mounting operation is performed in the order of FIGS. It is a figure explaining the adjustment method of the width and angle of the lens barrel 30 of the binocular loupe 10 according to the first embodiment. FIG. 6A shows the width adjustment of the lens barrel 30. FIG. 6B shows the angle adjustment of the lens barrel 30. 6 is a perspective view of a binocular loupe 110 according to Embodiment 2. FIG. It is a perspective view for demonstrating the conventional binocular loupe 910. FIG.

  Hereinafter, a binocular loupe and a binocular loupe device including the binocular loupe of the present invention will be described with reference to the drawings. The binocular loupe has a loupe (magnifying glass) corresponding to each of the user's eyes. In this specification, the “left” and “right” directions are used with reference to the left-right direction viewed from the user at the time of use. Represents. In the drawings, “L” after the reference sign represents the left eye of the user, and “R” after the reference sign represents the right eye of the user. Moreover, each drawing does not necessarily reflect actual dimensions.

[Embodiment 1]
1. Configuration of Binocular Magnifier 10 According to Embodiment 1 FIG. 1 is a perspective view of a binocular loupe 10 according to Embodiment 1. FIG. In FIG. 1, a portion attached to the binocular loupe 10 is also drawn with a two-dot chain line.
FIG. 2 is a three-view diagram of the binocular loupe 10 according to the first embodiment. 2A is a top view, FIG. 2B is a front view, and FIG. 2C is a side view. In FIG. 2B and FIG. 2C, 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 where the plate loupe 40 and the visual field changing member 50 of the binocular loupe 10 according to the first embodiment are switched to the retracted position.
As shown in FIGS. 1 and 2A to 2C, the binocular loupe 10 according to the first embodiment includes a bracket 20, a pair of left and right lens barrels 30 (30L, 30R), a plate loupe 40, and a field changing member. 50 and a visual field changing member support 60, and in a medical field such as medical, ophthalmology, dental treatment, and surgery, a user looks into the lens barrel 30 to enlarge and observe an observation object on the plate loupe 40 side. Is an observation instrument. The binocular loupe 10 is configured so that the plate loupe 40 and the field-of-view changing member 50 can be switched between the use position and the retracted position. However, in the following description, there is no description that the position is in the retracted position. In the following description, it is assumed that the plate loupe 40 and the visual field changing member 50 are in the use position.

  A bracket joins two or more components and can be configured in various forms. In the first embodiment, for example, the bracket 20 is configured by combining a plurality of members. Two or more other parts can be attached. Specifically, the bracket 20 includes a lens barrel mounting portion 21 for mounting a pair of lens barrels 30, a plate loupe mounting portion 22 for mounting a plate loupe 40, a lens barrel mounting portion 21 and a plate loupe. A connecting portion 23 that connects the attaching portion 22 is provided. In addition, 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 for allowing the fixing screws 21a to pass when the lens barrels 30L and 30R are mounted. Two fixing screws 21a are passed through each of the long holes 21b. The length and width of the long holes 21b are set so that the fixing screws 21a can move within the long 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 is substantially cylindrical and extends in the left-right direction. A part of the periphery of the rotating shaft 22a is formed with a plate loupe mounting surface 22d that extends in the left-right direction (the axial direction of the rotating shaft 22a) and is processed into a flat shape.
The knob 22b has a substantially cylindrical shape and extends along the left-right direction (the axial direction of the rotation shaft 22a) from the tip of the rotation shaft 22a. Knob 22b is formed around knob 22b.
The fixing claw 22c is composed of a pair of members having the same shape, and is fixed in the vicinity of the center of the plate loupe mounting surface 22d of the rotating shaft 22a with an interval in a bilaterally symmetric direction. The fixed claw 22c is an overall plate-like member extending along the plate loupe mounting surface 22d. The inner side of the fixed claw 22c as viewed as a pair on the surface of the plate loupe attachment surface 22d is fixed to the plate loupe attachment 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. Further, the outer side of the fixed claw 22c as viewed as a pair on the surface of the plate loupe mounting surface 22d has a gap between the plate loupe mounting surface 22d and a part of the projection protruding toward the plate loupe mounting surface 22d. (Not shown) is formed.
Although the details will be described later, the plate loupe mounting portion 22 holds the plate loupe 40 by fitting a part of the plate loupe 40 into the gap between the plate loupe mounting surface 22d and the fixing claw 22c. Yes.

  The connecting portion 23 has a substantially rectangular shape having 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 a bearing portion 23 a penetrating in the left-right direction is formed through the rotation shaft 22 a at the other end. A lock screw 23b capable of pressing the rotating shaft 22a through the bearing portion 23a is attached to the connecting portion 23. The connecting portion 23 is combined with the plate loupe attaching portion 22 to constitute a plate loupe position switching mechanism. The plate loupe position switching mechanism rotatably supports the rotation shaft 22a of the plate loupe mounting portion 22 by the bearing portion 23a of the connecting portion 23. As a result, the plate loupe 40 attached to the plate loupe attaching portion 22 is rotated in a direction perpendicular to the left-right direction so that the use position and the retreat position of the plate loupe 40 can be switched (for the retreat position). (See FIG. 3).

  The device mounting portion 24 is formed at the center of the lens barrel mounting portion 21. In the first embodiment, since the illumination device 80 or the imaging device 90 is attached via an arm stay 73 described later, the attachment surface of the arm stay 73 and the fixing of the arm stay 73 are fixed to the device attachment portion 24. A hole through which a screw passes is formed.

  The lens barrel 30 includes a pair of a lens barrel 30L for the user's left eye and a lens barrel 30R for the right eye. The lens barrels 30L and 30R are fixed to the lens frames 31L and 31R, the eyepieces 32L and 32R fixed to one side of the lens frames 31L and 31R, and the other side of the lens frames 31L and 31R. Objective lenses 33L and 33R are included. The lens barrels 30L and 30R are so-called Galileo optical systems each including an eyepiece and an objective lens, and are magnifying mirrors called telescopes and the like that have an infinite working distance. The lens barrels 30L and 30R are attached to the bracket 20 via a spacer by a fixing screw 21a that passes through a long hole 21b formed in the lens barrel attachment portion 21 and sandwiches a spring washer. Hereinafter, the cases corresponding to both the left and right will be described by omitting “L” and “R” after the reference numerals.

  The lens frame 31 is formed by combining a plurality of substantially cylindrical cylinders with the center axis aligned, and is roughly divided into an eyepiece side frame 31 a for fixing the eyepiece lens 32 and an object side frame 31 b for fixing the objective lens 33. It is configured. In the lens frame 31, the objective side frame 31b is attached to the bracket 20, and the eyepiece side frame 31a can be varied in the axial direction with respect to the objective side frame 31b. The lens frame 31 has a bracket mounting surface 31c that is processed into a flat surface at a part of the side surface. Further, the lens frame 31 has an optional mounting surface that is processed into a flat surface at a position rotated on the side surface by 90 ° in the axial direction with respect to the bracket mounting surface 31c (in the opposite direction between the lens frame 31L and the lens frame 31R). 31d is formed.

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

The plate loupe 40 is a thin plate-like plastic convex lens integrally formed with two lenses 41 (41L, 41R) corresponding to a pair of lens barrels 30L, 30R (arranged so that the optical axes coincide with each other). is there. The plate loupe 40 has a flat side surface that is attached to the plate loupe attaching portion 22 of the bracket 20. Further, the plate loupe 40 is formed with fitting protrusions 42 protruding in a gate shape at two left and right sides of the side surface of the bracket 20 on the side to be attached to the plate loupe attaching portion 22. Further, the plate loupe 40 has a notch or hole 43 (notch 43 in FIG. 1) formed at the boundary between the two lenses 41L and 41R. This notch or hole 43 prevents the illumination light from the illumination device 80 or the incident light to the image capture device 90 from being lost when the illumination device 80 and the imaging device 90 described later are disposed between the lens barrels 30L and 30R. Is provided.
The optical characteristics of the plate loupe 40 may be set as appropriate so as to obtain desired optical characteristics for the binocular loupe 10 in consideration of the combination with the lens barrel 30. As an example, the binocular loupe 10 having a working distance of 40 cm to 100 cm at a magnification of 2.6 times may be configured by forming the plate loupe 40 at a magnification of 1.7 times and combining with the lens barrel 30. . Alternatively, the binocular loupe 10 having a working distance of 30 cm to 45 cm at a magnification of 3 times may be configured by forming the plate loupe 40 at a magnification of 2 times and combining with the lens barrel 30 of the previous example.

  The field-of-view changing member 50 is a Fresnel-type plastic prism plate (a type that is formed into a thin plate shape by dividing a normal optical component into strip-like or concentric regions and offsetting the surface). The field-of-view changing member 50 has the Fresnel surface facing the plate loupe 40 and covers at least a part of the peripheral part on the observation target side of the plate loupe 40 (in FIG. 1, covers a part of the left peripheral part) The peripheral visual field through the visual field changing member 50 is arranged so as to spread outward. Supplementally, since the light passing through the prism is bent, the outer side can be seen more than the case where the visual field changing member 50 is not arranged depending on the arrangement direction. The angle of the slope of the prism surface may be set as appropriate according to the field of view to be expanded.

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

  The field 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 fastening the flange portion with a fixing screw. Further, the visual field changing member support base portion 61 is formed with a pin 61a protruding in a cylindrical shape from the outer surface and a screw hole near the pin 61a.

  The visual field changing member support temple portion 62 has an elongated and substantially rectangular parallelepiped shape, and extends in a direction perpendicular to the left and right direction so as to cross the side of the plate loupe 40. The field-of-view changing member support temple portion 62 is formed with a pin notch 62a that can be sandwiched between the pins 61a of the field-of-view changing member support base portion 61 at the base side end. In addition, the visual field changing member support temple portion 62 is formed with an angle fixing long hole 62b in the vicinity of the pin notch 62a. As shown in FIG. 2C, the visual field changing member support temple portion 62 is passed through the angle fixing long hole 62b with the pin notch 62a sandwiching the pin 61a of the visual field changing member support base portion 61. Then, the visual field changing member 50 is fixed at an angular position at which the visual field changing member 50 is used by a fixing screw 61b that is screwed into the screw hole of the visual field changing member support base 61. Further, the visual field changing member support temple portion 62 is screwed into the screw hole of the visual field changing member support base portion 61 from a state where the pin notch 62a is shifted to a position where the pin 61a of the visual field changing member support base portion 61 is not sandwiched. 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 part 63 is fixed to the distal end side end part of the field-of-view changing member supporting temple part 62, extends along the outer side surface of the field-of-view changing member 50, and has two corners outside 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 Binocular Loupe Device 1 According to Embodiment 1 FIG. 4 is a diagram illustrating the binocular loupe device 1 according to the first embodiment. FIG. 4A is a perspective view of the binocular loupe device 1. FIG. 4B is a diagram illustrating the wiring insertion portion 72 c in the arm 72. FIG. 4C is a diagram illustrating the wiring fixing portion 172c in the arm 172 which is a modified example.
As shown in FIGS. 4A and 4B (see FIG. 1 as appropriate), the binocular loupe device 1 according to the first embodiment includes the binocular loupe 10 described above, an installation table 70, a lighting device 80, and the like. And an imaging device 90.

  The installation table 70 includes a stand 71, an arm 72, and an arm stay 73. The binocular loupe 10, the illumination device 80, and the imaging device 90 are placed at a predetermined position and a position so that the user can easily observe the observation target. Support in the direction.

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

  The arm 72 is attached so that the base side thereof can move up and down with respect to the pole 71b of the stand 71 and is rotatable about the pole 71b. The arm 72 is a so-called multi-joint arm having a plurality of joints J1 to J4. The arm 72 has a distal end portion 72a formed in a gate shape. The arm 72 has a rod-like 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 user can move the tip 72a to a desired position by gripping and moving the grip 72b. The arm 72 has a distal end portion 72a formed of a hollow pipe member, and an inner side of the distal end portion 72a serves as a wiring insertion portion 72c through which wiring or the like can be inserted.

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

  The illumination device 80 is a device that irradiates illumination light toward an observation target, and is disposed between the lens barrel 30L and the lens barrel 30R via an illumination device fixture 81 (see FIG. 2). It is attached to the arm stay 73. The illumination light of the illumination device 80 passes through the notch 43 of the plate loupe 40 and is irradiated to the observation target. Further, the electric cable 80 a of the lighting device 80 is inserted into the wiring insertion portion 72 c of the arm 72 and subjected to wiring processing.

  The imaging device 90 is a camera that includes a lens attached to the tip and records a still image or a moving image. The imaging device 90 is attached to the arm stay 73 via an imaging device attachment 91. The imaging device 90 is configured to be able to adjust the inclination or the like by the imaging device mounting tool 91 so that an observation target can be captured. Further, the electric cable 90 a of the imaging device 90 is inserted into the wiring insertion 72 c of the arm 72 and subjected to wiring processing.

3. Method of Using Binocular Loupe Device 1 According to Embodiment 1 Although it differs depending on the medical site, the binocular loupe device 100 is generally used as follows. In some cases, sterilization or the like may be required, but description of sterilization or the like is omitted.

(1) Setting of the plate loupe 40 FIG. 5 is a diagram for explaining the mounting procedure of the plate loupe 40 in the first embodiment. The mounting operation is performed in the order of FIGS.
First, the plate loupe 40 is attached to the bracket 20. When a plurality of plate magnifiers having different optical characteristics are prepared, the planned observation contents are examined, and a plate magnifier 40 having optical characteristics suitable for observation is selected and attached to the bracket 20. To attach the plate loupe 40 to the bracket 20, first, as shown in FIG. 5A, attach the finger of one hand to the vicinity of the fixed claw 22 c on the side far from the knob 22 b of the plate loupe attaching portion 22. The corresponding fitting protrusion 42 of the plate loupe 40 held in the hand is inserted into the gap between the fixed claw 22c with the finger attached and the plate loupe mounting surface 22d. After confirming that the inserted fitting projection 42 is fitted into the fixing claw 22c, as shown in FIG. 5 (b), hold the knob 22b with one hand, and insert the fitting projection 42 not yet inserted into the knob 22b side. Insert into the gap between the fixing claw 22c and the plate loupe mounting surface 22d. The operation of attaching the plate loupe 40 to the bracket 20 is completed after confirming that the fitting protrusion 42 inserted later is fitted into the fixing claw 22c on the knob 22b side.
In order to remove the plate loupe 40 from the bracket 20, the knob 22b side is opened on both sides, the fitting projection 42 on the knob 22b side is removed, and then the side far from the knob 22b is opened and the other fitting projection 42 is removed. Good.

(2) Adjustment of Eye Width and Angle of Lens Barrel 30 FIG. 6 is a diagram illustrating a method for adjusting the width and angle of the lens barrel 30 of the binocular loupe 10 according to the first embodiment. FIG. 6A shows the width adjustment of the lens barrel 30. FIG. 6B shows the angle adjustment of the lens barrel 30.
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. Do. In the first embodiment, the lens barrel 30 is attached to the bracket 20 by a fixing screw 21a sandwiching a spring washer, and the position is held by the reaction force of the spring washer. For this reason, in any of the adjustments, a force greater than the force held in the lens barrels 30L and 30R is applied by hand and moved in the left-right direction indicated by the arrow in FIG. 6A, or FIG. By rotating inward and outward as indicated by the arrow, the desired width or angle is adjusted.

(3) Set of field-of-view changing member 50 Next, the scheduled observation contents are examined, and the field-of-view changing member 50 is attached to the side where the field of view is to be expanded, such as the side where the assistant is located.

(4) Adjustment of the position of the binocular loupe 10 Next, the arm 72 is moved up and down with respect to the stand 71, or the grip 72b of the arm 72 is moved to adjust the position and orientation of the binocular loupe 10 that is easy to observe. (See FIG. 4a).

(5) Observation of observation target and adjustment during observation Next, the user looks into the binocular loupe 10 from the eyepiece 32 side and magnifies the observation target. The user appropriately adjusts exchange 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, when the plate lens 40 becomes dirty during observation and obstructs observation, the plate lens 40 is replaced with a new one. In addition, when it is desired to change the optical characteristics of the binocular loupe 10 during observation, the plate lens 40 is switched to the retracted position, or the plate lens 40 is replaced with a plate lens having another optical characteristic. Further, when it is not necessary to widen the visual field range during observation, the visual field changing member 50 is switched to the retracted position. In addition, the observation point is changed by gripping the grip 72b of the arm 72.

4). Effects of Embodiment 1 Since the binocular loupe 10 according to Embodiment 1 includes the plate loupe 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 body fluids, chemicals, etc., and the objective lens side of the lens barrel 30 is difficult to get dirty. Further, since the plate loupe 40 is detachably attached to the bracket 20, it can be replaced in a short time. Further, the plate loupe 40 can be formed at a lower cost than the lens barrel 30. For this reason, it is realistic to configure the plate loupe 40 as a disposal part. As a result, according to the first embodiment, when it is desired to restore the observation function when the observation function is impaired due to contamination of the objective lens side (plate loupe), the medical binocular that can be easily handled in a short time. A loupe can be provided.

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

  In the binocular loupe 10 according to the first embodiment, a plate loupe position switching mechanism for switching between the use position and the retracted position of the plate loupe 40 is configured by the plate loupe mounting portion 22 and the connecting portion 23 of the bracket 20. Therefore, when it is determined that the observation of only the lens barrel 30 is more suitable for the situation than the observation of the binocular loupe 10 through the plate loupe 40, the binocular loupe is retracted to switch to the observation of only the lens barrel 30. Make it possible. Thereby, it is possible to provide a medical binocular loupe that is easy to cope with the use situation.

In addition, the binocular loupe 10 according to the first embodiment includes the visual field changing member 50 that covers a part of the peripheral portion of the plate loupe 40 and expands the visual field of the peripheral portion to the outside at the use position. It is possible to detect movement in a range farther from the observation target. For example, it is possible to detect a scalpel or the like that has been instrumented by a third party during surgery from a position that is safely away from the hand. Thereby, the medical binocular loupe which can observe more safely can be provided.
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, and supports the visual field changing member 50 so that the use position and the retracted position can be switched. Since the visual field changing member support 60 is provided, the visual field changing member 50 can be retracted when it is not necessary to widen the peripheral visual field. Thereby, it is possible to provide a medical binocular loupe that is easy to cope with the use situation.

  In the first embodiment, since the visual field changing member 50 is a prism, the peripheral visual field can be expanded according to the angle of the prism surface. The prism is preferable as the visual field changing member 50 because it can be easily adjusted to a desired peripheral visual field range simply by setting the angle of the prism surface.

  In the first embodiment, the field-of-view changing member 50 is a Fresnel type prism plate, and thus is formed thin and light. Therefore, it is possible to easily switch between the use position and the retracted position of the visual field changing member 50 and to configure the compact plate loupe 10.

  In the first embodiment, the plate loupe 40 has a notch or hole 43 formed at the boundary between the two lenses 41 (41L and 41R), and therefore irradiates illumination light through the notch or hole 43. Thus, it becomes possible to irradiate the observation target with illumination light having a small inclination with respect to the optical axis of the lens barrel 30. Thereby, a clear observation can be performed with less shadow on the observation target.

  In the first embodiment, 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. On the other hand, the positional relationship of the illumination device 80 or the imaging device 90 can be made constant. Thereby, stable observation or stable recording can be performed.

  The binocular loupe device 1 according to the first embodiment includes a stand 71, an arm 72 that is attached to the stand 71 and configured to freely move the tip 72 a to a user's desired position, and the tip of the arm 72. Since the binocular loupe 10 having the arm stay 73 held by 72a and the bracket 20 fixed to the arm stay 73 is provided, the binocular loupe 10 can be placed at a desired spatial position of the user. It is not necessary for the person to wear it. Thereby, the binocular loupe 10 with various effects can be used easily.

  In the first embodiment, the arm 72 has a hollow wiring insertion portion 72c into which the electric cable 80a of the illumination device 80 or the electric cable 90a of the imaging device 90 can be inserted. Therefore, the electric cables 80a and 90a are the arms 72. Wiring is processed along the line. As a result, it is possible to avoid the possibility that the wiring may interfere with the observation.

[Embodiment 2]
1. 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 is an observation instrument for magnifying and observing an observation object on the plate loupe 40 side when a user looks into the lens barrel 30. In the binocular loupe 110 according to the second embodiment, the visual field changing member 50 of the binocular loupe 10 according to the first embodiment and the visual field changing member support 60 that supports the visual field changing member 50 are replaced with the second plate loupe 140 and the second plate. The second plate loupe support 160 that supports the loupe 140 is replaced. Below, the part substituted with respect to the binocular loupe 10 is demonstrated, and description of another part is abbreviate | omitted. Note that 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. Further, the binocular loupe 110 is attached to the illumination 80 on the side opposite to the side on which the lens barrel 30 is attached to the bracket 20.

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

  The second plate loupe support 160 is a second plate loupe 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 loupe support temple portion 162 extending from the second plate loupe support base portion 161, and a second plate loupe holding portion that is fixed to the tip of the second plate loupe support temple portion 162 and holds the second plate loupe 140 163. The second plate loupe support base portion 161 and the second plate loupe support temple portion 162 are the same as the field-of-view changing member support base portion 61 and the field-of-view changing member support temple portion 62 of the first embodiment, and thus description thereof is omitted.

  Each second plate loupe holding portion 163 holds the second plate loupe 140 by fixing the outer ridge line portion of the second plate loupe 140 with a fixing screw.

2. Effects of Second Embodiment A binocular loupe 110 according to the second embodiment includes a second plate loupe 140 that covers the plate loupe 40 and changes the magnification of the binocular loupe 110 in a use position, and a pair of lens barrels 30L and 30R. A second plate loupe support 160 is provided that is attached to at least one of the lens barrel or the bracket 20 and supports the second plate loupe 140 so that the use position and the retracted position can be switched. Therefore, depending on the situation, the binocular loupe 110 may be viewed through the plate loupe 40, when viewed through the second plate loupe 140, when viewed 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 optical characteristics such as magnification. Thereby, it is possible to provide a medical binocular loupe that is easy to cope with the use situation.

  As mentioned above, although this invention was demonstrated based on said embodiment, this invention is not limited to said embodiment. The present invention can be implemented in various modes without departing from the spirit thereof, and for example, the following modifications are possible.

(1) The number, material, shape, position, size, angle, optical characteristics, etc. of the constituent elements described in the above embodiment are exemplifications, and can be changed within a range not impairing the effects of the present invention.

(2) The binocular loupe 10 according to the first embodiment is configured such that the illumination device 80 or the imaging device 90 is indirectly attached to the device mounting portion 24 of the bracket 20 via the arm stay 73. Is not limited to this. For example, the mounting part of the illumination device 80 or the imaging device 90 may be formed on the bracket, and the illumination device 80 or the imaging device 90 may be directly attached.

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

(4) In the first embodiment, the plate loupe position switching mechanism has a structure in which the plate loupe mounting portion 22 is rotatably supported by the connecting portion 23, and the plate loupe 40 is rotated in a direction perpendicular to the left-right direction. Although the use position and the retracted position of the plate loupe 40 can be switched, the present invention is not limited to this as long as the use position and the retracted position of the plate loupe 40 can be switched. . For example, the plate loupe switching mechanism may be configured so that the plate loupe mounting portion can slide with respect to the connecting portion, and the plate loupe can be switched between the use position and the retracted position by sliding the plate loupe. . Further, the plate loupe switching mechanism has a structure in which the plate loupe mounting portion can be attached to and detached from the connecting portion, and the plate loupe 40 can be switched between the use position and the retracted position by detaching the plate loupe. Good.

(5) In the first embodiment, the lens barrel 30 is a so-called Galileo optical system including the eyepiece 32 and the objective lens 33, but the present invention is not limited to this. For example, a so-called Kepler type (prism type) in which the lens barrel includes an objective lens, a prism, and an eyepiece may be used. Note that an intermediate lens may be included between the eyepiece lens and the objective lens.

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

(7) In the first embodiment, 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 or objective lens may be a lens other than a general spherical lens such as a cemented lens, an aspheric lens, or a Fresnel lens. A plastic lens may also be used.

(8) In the first embodiment, 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-like prism instead of a Fresnel-type prism plate, or may be a glass member. Further, the visual field changing member may be a bent lens, a half mirror, or a mirror.

(9) In the first embodiment, the visual field changing member 50 covers the left peripheral portion of the plate loupe 40 and widens the visual field to the outside (left side), but the present invention is not limited to this. For example, if you want to expand the lower peripheral field of view, you can place a field-of-view changing member on the lower side, and if you want to expand the peripheral field of view on both the left and right sides, Good.

(10) In the first embodiment, the visual field changing member support 60 holds the visual field changing member 50 in the visual field changing member holding part 63 by a fixing screw. In the second embodiment, the second plate loupe support 160 holds the second plate loupe 140 by the fixing screw in the second plate loupe holding part 163, but the present invention is not limited to this. Absent. For example, a claw may be formed in the visual field changing member holding part, and the visual field changing member holding part may hold the visual field changing member 50 by fitting a part of the visual field changing member 50 into the claw. A claw is formed in the second plate loupe holding part, and the second plate loupe holding part holds the second plate loupe 140 by fitting a part of the second plate loupe 140 into the claw. Also good.

(11) The visual field changing member support 60 in the first embodiment or the second plate loupe support 160 in the second embodiment is attached to the lens barrel 30, but the present invention is not limited to this. For example, the bracket 10 may be attached.

(12) The field-of-view changing member support 60 in the first embodiment or the second plate loupe support 160 in the second embodiment is rotated with respect to the lens barrel 30 to use the field-of-view changing member 50 or the second plate loupe 140. Although the position and the retracted position are switched, the present invention is not limited to this. For example, when the visual field changing member support 60 or the second plate loupe support 160 slides with respect to the lens barrel 30, the use position and the retracted position of the visual field changing member 50 or the second plate loupe 140 are switched. There may be. In addition, the field-of-view changing member support 60 or the second plate loupe support 160 is detachably attached to the lens barrel 30, thereby switching between the use position and the retracted position of the field-of-view changing member 50 or the second plate loupe 140. It may be a thing.

(13) The plate loupe 40 in the first embodiment or the second plate loupe 140 in the second embodiment is a thin plate-like plastic convex lens, but the present invention is not limited to this. For example, the plate loupe may be glass or a concave lens as long as the magnifying glass can be configured when combined with other optical components. Further, it may be a Fresnel lens.

(14) In the second embodiment, the second plate loupe 140 has the two lenses 141 (141L, 141R) formed integrally, 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 (especially inward and outward) can be adjusted.

(15) In the first embodiment, the arm 72 is a multi-joint arm, but it is sufficient that the user can 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 employed for 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 illumination device 80 and the electric cable 90a of the imaging device 90 into the wiring insertion portion 72c of the arm 72. In order to obtain an effect that does not interfere with observation, the following modification is also effective. In this modified example, as shown in FIG. 4C, a wiring fixing portion 172 c for fixing the electric cable 80 a of the lighting device 80 or the electric cable 90 a of the imaging device 90 is provided along the arm 172. . The wiring fixing part 172c is not particularly limited as long as the wiring can be fixed. For example, the wiring fixing part 172c may be a cable band in which a cable is detachable.

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

  DESCRIPTION OF SYMBOLS 1 ... Binocular loupe device 10, 110 ... Binocular loupe, 20 ... Bracket, 21 ... Lens barrel attachment part, 22 ... Plate loupe attachment part, 23 ... Connection part, 24 ... Equipment attachment part, 30 (30L, 30R) ... Lens barrel, 40 ... Plate loupe, 41 (41L, 41R) ... (Plate loupe) lens, 43 ... Notch or hole, 50 ... Field changing member, 60 ... Field changing member support, 70 ... Installation base, 71 ... Stand, 72, 172 ... Arm, 72a, 172a ... (Arm) tip, 72c ... Wiring insertion part, 172c ... Wiring fixing part, 73 ... Arm stay, 80 ... Lighting equipment, 80a ... Electricity (of lighting equipment) Cable, 90 ... imaging device, 90a ... electric cable (of imaging device), 140 ... second plate loupe, 160 ... second plate loupe support, J1-J4 ... (arm) ) Joint

Claims (11)

A medical binocular loupe used for magnifying observation objects,
A bracket,
A pair of lens barrels attached to the bracket;
Two lenses corresponding to the pair of lens barrels are formed, and a plate loupe that is detachably attached to the bracket so as to cover the observation target side of the pair of lens barrels in use. A binocular loupe characterized by comprising. The bracket is
A lens barrel mounting portion for mounting the pair of lens barrels;
A plate loupe attaching portion for attaching the plate loupe;
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 a use position and a retracted position of the plate loupe includes the plate loupe mounting portion and the connecting portion. When covering at least a part of the peripheral part on the observation target side of the plate loupe, a visual field changing member that expands the visual field of a part of the peripheral part to the outside,
And a visual field changing member support that is attached to at least one of the pair of lens barrels or the bracket and supports the visual field changing member so as to be switchable between a use position and a retracted position. The binocular loupe according to claim 1 or 2.   The binocular loupe according to claim 3, wherein the visual field changing member is a prism.   The binocular loupe according to claim 4, wherein the prism is a Fresnel type prism plate. A second plate loupe that changes the magnification of the binocular loupe when the observation target side of the plate loupe is covered;
And a second plate loupe support that is attached to at least one of the pair of lens barrels or the bracket and supports the second plate loupe so as to be switchable between a use position and a retracted position. The binocular loupe according to claim 1 or 2.   The binocular loupe according to any one of claims 1 to 6, wherein the plate loupe has a notch or a hole formed in a boundary portion between the two lenses.   8. The device according to claim 1, wherein the bracket is formed with a device mounting portion for mounting a lighting device or an imaging device directly or indirectly toward the observation target. 9. Binocular loupe. With a stand,
An arm having one or a plurality of joints and attached to the stand so as to be movable to a user's desired position;
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,
The binocular loupe is the binocular loupe according to any one of claims 1 to 8. It further comprises an illumination device or an imaging device attached to the binocular loupe,
The binocular loupe device according to claim 9, wherein the arm has a hollow wiring insertion portion through which an electric cable of the illumination device or the imaging device can be inserted. It further comprises an illumination device or an imaging device attached to the binocular loupe,
The binocular loupe device according to claim 9, wherein the arm has a wiring fixing portion that can fix an electric cable of the illumination device or the imaging device along the arm.

Images