WO2019229837A1

WO2019229837A1 - Optical device and method for focusing optical device

Info

Publication number: WO2019229837A1
Application number: PCT/JP2018/020510
Authority: WO
Inventors: 中村　昌弘
Original assignee: 株式会社ニコンビジョン
Priority date: 2018-05-29
Filing date: 2018-05-29
Publication date: 2019-12-05
Also published as: JP6990304B2; JPWO2019229837A1

Abstract

[Problem] To switch between independently adjusting a right and a left focusing mechanism and integrally adjusting the right and the left focusing mechanism. [Solution] An optical device includes: a right and a left lens barrel each having an optical system for forming the image of an object; and a focusing mechanism for moving the optical system along the optical axis of the optical system to thereby focus the object. The focusing mechanism is capable of switching between integrally driving the optical systems of the right and left lens barrels along the optical axis direction and driving the optical systems independently of each other.

Description

Optical device and method of focusing optical device

The present invention relates to an optical device and a focusing method of the optical device.

An optical device such as binoculars is provided with a focusing mechanism that focuses an object by moving the left and right eyepieces in the optical axis direction in conjunction with each other (see Patent Document 1).

U.S. Pat. No. 4,277,130

In the first aspect of the present invention, left and right lens barrels each provided with an optical system for forming an image of an object, and focusing for moving the optical system in the optical axis direction of the optical system and focusing on the object The focusing mechanism is capable of switching between the integral driving of the respective optical systems of the left and right lens barrels and the independent driving of the respective optical systems along the optical axis direction. An optical instrument is provided.

In the second aspect of the present invention, the optical system that forms the image of the object disposed in each of the left and right lens barrels is moved in the optical axis direction of the optical system to focus on the object, Provided is a method for focusing an optical device, which includes switching an integrated drive of the optical systems of the left and right lens barrels along the axial direction and an independent drive of each of the optical systems. .

It is a perspective view which shows an example of the binoculars (optical apparatus) which concerns on this embodiment. It is a top view which shows an example of binoculars. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. It is a figure which expands and shows a part of binoculars shown in FIG. FIG. 3 is a cross-sectional view taken along line BB in FIG. 2. FIG. 6 is a cross-sectional view taken along the line CC in FIG. 5. FIG. 6 is a cross-sectional view taken along the line DD in FIG. 5. It is a figure which expands and shows a part of clutch (switching part) shown in FIG. It is a perspective view which shows an example of a rotational force transmission part. It is the disassembled perspective view which decomposed | disassembled the rotational force transmission part shown in FIG. (A) And (B) is a perspective view which shows an example of a rotational force transmission part. It is sectional drawing which shows the state which cancelled | released connection of clutch members. FIG. 13 is a cross-sectional view taken along the line EE in FIG. 12. FIG. 13 is a cross-sectional view taken along line FF in FIG. 12. It is a figure which expands and shows a part of clutch shown in FIG.

In Patent Document 1 described above, the left and right focusing mechanisms cannot be adjusted independently. Therefore, the present embodiment provides an optical device that can switch between a case where the left and right focusing mechanisms are adjusted independently and a case where the left and right focusing mechanisms are adjusted together, and a method for focusing the optical device. The purpose is that.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the contents described below. Further, in the drawings, in order to describe the embodiment, there are cases where the scale is appropriately changed and expressed, for example, a part is enlarged or emphasized. In the following description, directions will be described using the XYZ coordinate system shown in each drawing as appropriate. In each of the X direction, the Y direction, and the Z direction, it is assumed that the direction indicated by the arrow in the figure is the + direction (eg, + X direction) and the opposite direction is the − direction (−X direction).

FIG. 1 is a perspective view showing an example of binoculars (optical apparatus) 100 according to the present embodiment. FIG. 2 is a plan view showing an example of the binoculars 100. When the binoculars 100 are used, the vertical direction is the Z direction, the + Z direction is the upward direction, and the −Z direction is the downward direction. When the binoculars 100 are used, the left-right direction is the X direction, the left direction is the -X direction, and the right direction is the + X direction. The Y direction is a direction when the binoculars 100 are directed toward the observation object, the + Y side is the observation object side, and the −Y side is the observer side.

As shown in FIGS. 1 and 2, the binoculars 100 includes a main body 11 and a gantry 12. The main body 11 includes a left lens barrel 10 L and a right lens barrel 10 R, a connecting portion 13, and a focusing mechanism 20. Hereinafter, the left barrel 10L and the right barrel 10R may be collectively referred to as the left and right barrels 10 (or barrels 10) as appropriate. In the left lens barrel 10L and the right lens barrel 10R, the

ends

7L and 7R are provided at the ends in the direction close to the viewpoint of the observer (the −Y direction), respectively. The connecting portion 13 integrally connects the left lens barrel 10L and the right lens barrel 10R. The connection part 13 is provided in the center part of the main body part 11 in the Y direction.

The main body 11 is mounted on the gantry 12. The gantry 12 includes a pedestal portion 12a, a first shaft portion 12b, an arm portion 12c, a second shaft portion 12d, and a bearing 12e. The pedestal portion 12a is fixed to a surface parallel to a horizontal surface such as a desk or a table using a fastening member such as a bolt. The first shaft portion 12b is supported on the pedestal portion 12a so as to be rotatable about the axis of the vertical rotation axis AX1 perpendicular to or substantially perpendicular to the horizontal plane with respect to the pedestal portion 12a. In the present embodiment, the vertical rotation axis AX1 is parallel to the Z axis, for example, but is not limited to being perpendicular to the horizontal plane, and may be set in a direction inclined with respect to the horizontal plane.

The arm portion 12c is provided integrally with the first shaft portion 12b, and is provided by bending the tip extending in the + X direction and the −X direction from the first shaft portion 12b upward (+ Z direction). Yes. Bearings 12e are provided at the tips (upper ends) of the two arm portions 12c, respectively. The bearing 12e rotatably supports the second shaft portion 12d. The second shaft portion 12d is rotatable about the axis of the horizontal rotation axis AX2 that is parallel or substantially parallel to the horizontal direction with respect to the bearing 12e. In the present embodiment, the horizontal rotation axis AX2 is parallel to the X direction. The two second shaft portions 12d are respectively disposed at the upper ends of the arm portions 12c, and are attached to the −X side end portion and the + X direction end portion of the connecting portion 13 of the main body portion 11.

The binoculars 100 can rotate the main body 11 around the axis of the vertical rotation axis AX1 by rotating the first shaft part 12b of the gantry 12 around the axis of the vertical rotation axis AX1. Further, the binoculars 100 can rotate the main body 11 around the horizontal rotation axis AX2 by rotating the second shaft portion 12d of the gantry 12 around the horizontal rotation axis AX2. As a result, the observer can freely set the orientation of the main body 11 in the respective movable ranges around the vertical rotation axis AX1 and the horizontal rotation axis AX2. In this embodiment, the vertical rotation axis AX1 and the horizontal rotation axis AX2 are configured to intersect with each other. However, the present invention is not limited to this configuration, and the vertical rotation axis AX1 and the horizontal rotation axis AX2 do not intersect with each other. May be. The left and right lens barrels 10 are integrated with the main body 11 around the vertical rotation axis AX1 and the horizontal rotation axis AX2 as the main body 11 rotates about the vertical rotation axis AX1 and the horizontal rotation axis AX2. Rotate.

FIG. 3 is a sectional view taken along line AA in FIG. FIG. 3 is a cross-sectional view showing the internal configuration of the left barrel 10L and the connecting portion 13. As shown in FIG. In FIG. 3, the inside of the left barrel 10L is illustrated, but the inside of the right barrel 10R has substantially the same configuration as the left barrel 10L.

As shown in FIG. 3, the lens barrel 10L (10R) has an optical system 2L (2R), respectively. Since the optical system 2L on the left side and the optical system 2R on the right side are respectively the optical system 2, they are denoted by reference numerals 2L (2) and 2R (2) (see FIGS. 1 and 2). The binoculars 100 set the direction of the optical axis 3L of the left optical system 2L and the direction of the optical axis 3R of the right optical system 2R according to the in-focus positions (focal lengths) of the left and right

optical systems

2L and 2R or the optical system 2 Depending on the zoom position or the like, a configuration that can be changed in a horizontal plane may be applied. Hereinafter, when the optical axis 3L and the optical axis 3R are not distinguished, they are appropriately expressed as the optical axis 3. The optical axis 3L of the left optical system 2L and the optical axis 3R of the right optical system 2R are arranged symmetrically with respect to the Y axis. For example, when the binoculars 100 are set to the telephoto mode, the optical axes 3L and 3R of the left and right

optical systems

2L and 2R are set parallel to the Y direction, respectively.

The left optical system 2L includes an objective lens 16, a focusing lens 14, an erecting prism 15, and an eyepiece 17 as shown in FIG. The optical system 2L may include a zoom lens member. As the zoom lens member, at least one or more of the objective lens 16, the focusing lens 14, and the eyepiece lens 17 may be used, or the objective lens 16, the focusing lens 14, and the eyepiece may be used. A lens member different from the lens 17 may be disposed on the optical axis 3L. The zoom lens member is provided so as to be movable along the optical axis 3L, and zooms the observation object by adjusting the focal length to the observer's viewpoint.

The objective lens 16 is held in the lens barrel 10L (10). The objective lens 16 includes a plurality of lens members (one concave lens and two convex lenses in the drawing), but may be one or two lens members, or may be four lens members. The objective lens 16 is not limited to a combination of a convex lens and a concave lens, and may be configured to combine a plurality of convex lenses, for example. Light from the observation object enters the objective lens 16. The objective lens 16 guides the incident light to the focusing lens 14. The objective lens 16 is fixed on the optical axis 3L, but may be movable along the optical axis 3L.

The focusing lens 14 is held in the lens barrel 10L (10). The focusing lens 14 includes a plurality of lens members (one concave lens and one convex lens in the drawing), but may be a single lens member (for example, a convex lens), or a configuration in which a plurality of convex lenses are combined. May be. The focusing lens 14 adjusts the focal position and focal length of the optical system 2L (2). For example, the focusing lens 14 is disposed in the optical path from the objective lens 16 to the eyepiece 17. The focusing lens 14 is moved in a direction along the optical axis 3L (3) by a focusing mechanism 20 described later, and adjusts the focal position at the observer's viewpoint in the optical system 2L (2).

The erecting prism 15 is held in the lens barrel 10L (10). The erecting prism 15 converts the inverted image formed by the objective lens 16 into an erecting image. For example, the erecting prism 15 is disposed in the optical path from the objective lens 16 to the eyepiece 17 (in the optical path from the focusing lens 14 to the eyepiece 17). The observer can observe the erect image converted from the inverted image by the erecting prism 15 through the eyepiece 17. A plurality of lens members may be used instead of using the erecting prism 15. In this case, an observer can observe an erect image through the eyepiece 17 by forming an intermediate image with a plurality of lens members.

The eyepiece 17 is held in the lens barrel 10L (10) or the eyepiece 7L. The eyepiece 17 includes a plurality of lens members (two convex lenses in the drawing), but may be a single lens member or a combination of a convex lens and a concave lens. The eyepiece 17 may be movable along the optical axis 3L or may be fixed on the optical axis 3L. When the eyepiece 17 is movable along the optical axis 3L, the position of the eyepiece 17 of the eyepiece 7L and the position of the eyepiece 17 of the eyepiece 7R can be changed. With this configuration, the diopter difference between the left and right sides of the observer can be adjusted. When the eyepiece 17 is fixed, the

eyesight

7L and 7R may be formed of an elastic body, and the diopter difference in the observer may be adjusted by, for example, folding back the eyepiece portion according to the observer.

In the drawing, the left optical system 2L is shown, but the right optical system 2R has the same configuration as the left optical system 2L.

The focusing mechanism 20 moves at least one of the plurality of lens members constituting the optical system 2L (2) in the optical axis direction (Y direction) of the optical axis 3. In the present embodiment, the focusing mechanism 20 moves two focusing lenses 14 (that is, all the focusing lenses 14 at the same time) among the plurality of lens members along the optical axis 3L (in the Y direction).

FIG. 4 is an enlarged view showing a part of the binoculars 100 shown in FIG. FIG. 5 is a sectional view taken along line BB in FIG. FIG. 6 is a cross-sectional view taken along the line CC of FIG. As shown in FIGS. 4 to 6, the focusing mechanism 20 includes a rotating shaft portion 21, a focusing knob 22, a lens holding member 23, a rotational force transmitting portion 24, and a clutch (switching portion) 25. . When the left side configuration of the rotary shaft portion 21, the focusing knob 22, the lens holding member 23, the rotational force transmitting portion 24, and the clutch 25 constituting the focusing mechanism 20 is shown, it is denoted by reference numeral 21L (21), etc. In this case, reference numeral 21R (21) is shown.

The rotary shaft portion 21 is, for example, a rod-shaped member having a circular cross section perpendicular to the longitudinal direction, and is arranged corresponding to each of the left and right lens barrels 10. The left rotation shaft portion 21L is disposed in the left lens barrel 10L. The left and right rotating shaft portions 21 are disposed along a direction perpendicular or substantially perpendicular to the optical axis direction (Y direction) of the optical axis 3 in the horizontal plane (XY plane), that is, the X direction. The rotating shaft portion 21L is rotatably supported by two bearings 18AL and 18BL (18) provided in the lens barrel 10L. The rotating shaft portion 21R is rotatably supported by two bearings 18AR and 18BR (18) provided in the lens barrel 10R.

The left and right rotation shaft portions 21 are arranged coaxially with respect to the rotation center axis AX3 parallel to the X direction, and rotate around the rotation center axis AX3 while being supported by the two bearings 18. The left and right rotating shaft portions 21 rotate around the rotation center axis AX3 to move some lens members of the optical system 2 in the optical axis direction (Y direction) of the optical axis 3. The rotating shaft portion 21L and the rotating shaft portion 21R have the same length, but the lengths may be different. Moreover, the same member may be used for the rotating shaft part 21L and the rotating shaft part 21R. By making the rotating shaft portion 21L and the rotating shaft portion 21R the same member, the number of parts to be manufactured can be reduced, and an increase in manufacturing cost can be suppressed.

The focusing knob 22 is provided at the end of each of the left and right rotating shafts 21 opposite to the side where the rotating shafts 21 face each other. The left focusing knob 22L is provided at the −X side end of the rotating shaft 21L in a state of protruding from the left lens barrel 10L to the −X side. The right focusing knob 22R is provided at the + X side end of the rotating shaft 21R in a state of protruding from the right lens barrel 10R to the + X side. The left focusing knob 22L is rotatable around the rotation center axis AX3 integrally with the left rotation shaft portion 21L. The right focusing knob 22R can rotate around the rotation center axis AX3 integrally with the right rotation shaft portion 21R.

Rotating the left and right focusing knobs 22 about the rotation center axis AX3 causes the rotation shaft portions 21 to rotate about the rotation center axis AX3, respectively. The left and right focusing knobs 22 can be gripped from outside the binoculars 100. The focusing knob 22 is disposed on the eyepiece 17 side of the horizontal rotation axis AX2 (see FIGS. 1 and 2) and in the range of the objective side from the erecting prism 15 (see FIG. 3). That is, the focusing knob 22 is disposed between the horizontal rotation axis AX2 and the erecting prism 15 in the Y direction. With this arrangement, the focusing lens 14 can be arranged in the vicinity of the erecting prism 15. Further, since the focusing knob 22 is arranged closer to the observer, the adjustment work when the observer grasps the focusing knob 22 while looking through the binoculars for diopter adjustment becomes easy.

The lens holding member 23 is disposed inside each of the left and right lens barrels 10. The lens holding member 23 has a cylindrical shape, for example, and holds the focusing lens 14 in the optical system 2. The lens holding member 23 is supported by the left and right lens barrels 10 so as to be movable in the optical axis direction of the optical axis 3. The left lens holding member 23L is guided by a guide portion 19L (19) provided in the lens barrel 10L and is movable along the optical axis 3L. The right lens holding member 23R is guided by a guide portion 19R (19) provided in the lens barrel 10R and is movable along the optical axis 3R. The focusing mechanism 20 moves the focusing lens 14 in the optical axis direction of the optical axis 3 by moving the lens holding member 23 holding the focusing lens 14 in the optical axis direction (Y direction) of the optical axis 3. be able to.

The rotational force transmitting unit 24 transmits the rotational force around the axis of the rotating shaft 21 to the lens holding member 23 to move the lens holding member 23 in the optical axis direction of the optical axis 3. The rotational force transmission unit 24 uses a rack and pinion mechanism, and includes a pinion 27 and a rack 28. The pinion 27 is provided in each of the left and right rotating shaft portions 21. The left pinion 27L is provided on the left rotation shaft portion 21L. The right pinion 27R is provided on the right rotating shaft 21R. The pinion 27 has a configuration in which a part of the outer diameter of the rotating shaft portion 21 is enlarged and teeth are formed on the outer peripheral surface. However, the pinion 27 is not limited to this configuration, and is created separately from the rotating shaft portion 21. The structure by which the made pinion is attached to the rotating shaft part 21 may be sufficient. The pinion 27 rotates around the rotation center axis AX3 integrally with the rotation shaft portion 21 as the rotation shaft portion 21 rotates. Teeth formed on the outer peripheral surface of the pinion 27 mesh with the rack 28.

The rack 28 is provided on the lens holding member 23 in each of the left and right lens barrels 10. The left rack 28L is provided on the left lens holding member 23L. The right rack 28R is provided on the right lens holding member 23R. The rack 28 is provided on the outer periphery of the lens holding member 23 and has a plurality of teeth along the optical axis direction of the optical axis 3. In the rack 28, a plurality of teeth mesh with teeth on the outer peripheral surface of the pinion 27. With this configuration, the rotational force transmission unit 24 transmits the rotational force of the pinion 27 due to the rotation of the rotational shaft portion 21 about the axis to the rack 28 to move the lens holding member 23 in the optical axis direction. The configuration is not limited to this, and a configuration in which a rack created separately from the lens holding member 23 is attached to the lens holding member 23 may be used.

It should be noted that the rotational force transmission unit 24 is not limited to using a rack and pinion mechanism. Any rotation / linear motion conversion mechanism capable of converting the rotation of the rotation shaft portion 21 into the linear movement of the lens holding member 23 may be used. Further, the lens holding member 23 may be moved by a driving force such as an electric motor.

The clutch 25 is a switching unit that performs switching between rotation around the axis of the pair of rotating shafts 21 and rotation independent of each other. The clutch 25 connects (links) and releases the pair of rotating shaft portions 21. The clutch 25 includes a clutch member 29, an elastic body 30, a clutch slide 31, and a connection / release member 32. FIG. 7 is a cross-sectional view taken along the line DD in FIG. FIG. 8 is an enlarged view of a part of the clutch 25 shown in FIG. FIG. 9 is a perspective view showing an example of the clutch 25. FIG. 10 is an exploded perspective view in which the clutch 25 shown in FIG. 9 is disassembled.

7 to 10, the clutch member 29 is a disk-shaped member, and the pair of rotating shaft portions 21 are respectively attached to the end portions facing each other. The left clutch member 29L is attached to the + X side end of the left rotation shaft portion 21L and rotates integrally with the rotation shaft portion 21L. Further, the right clutch member 29R is attached to the −X side end of the right rotation shaft portion 21R, and rotates integrally with the rotation shaft portion 21R.

The clutch 25 is arranged such that the + X side end surface 29La of the left clutch member 29L and the −X side end surface 29Ra of the right clutch member 29R face each other. The clutch 25 can be set to a connected state in which the clutch member 29L and the clutch member 29R come into contact with each other and rotate as a unit and a released state in which the clutch member 29L and the clutch member 29R are separated from each other. In the connected state, the clutch member 29L and the clutch member 29R are coupled to transmit the rotation of one of the

rotating shaft portions

21L and 21R to the other of the

rotating shaft portions

21L and 21R. In the released state, even if any one of the

rotation shaft portions

21L and 21R is rotated, the rotation is not transmitted to any one of the

rotation shaft portions

21L and 21R.

The outer edge portion of the end surface 29La of the clutch member 29L and the outer edge portion of the end surface 29Ra of the clutch member 29R are provided with tooth molds 29t that mesh with each other when they come into contact with each other. The tooth molds 29t are provided along the outer peripheries of the end faces 29La and 29Ra, respectively. The provision of the tooth mold 29t prevents the tooth mold 29t of the clutch member 29L and the tooth mold 29t of the clutch member 29R from meshing with each other in the above-described connected state, thereby preventing slippage between the two. 21L and the rotating shaft portion 21R can be rotated together.

When the clutch member 29L and the clutch member 29R are in the connected state, the rotation about the rotation center axis AX3 is transmitted between the clutch member 29L and the clutch member 29R, and the pair of

rotation shaft portions

21L and 21R are integrated. As the rotation center axis AX3. In addition, since the clutch member 29L and the clutch member 29R are in the released state, rotation is not transmitted between the clutch member 29L and the clutch member 29R, so that the

rotation shaft portions

21L and 21R (the pair of rotation shaft portions 21) Each can independently rotate about the axis of the rotation center axis AX3. As described above, the pair of rotation shaft portions 21 can rotate integrally around the rotation center axis AX3 and can rotate independently of each other.

The right clutch member 29R has an insertion hole 29Rb penetrating along the rotation center axis AX3 in the center portion. The right rotation shaft portion 21R is provided with a small diameter portion 21a at the tip on the −X side. The small diameter portion 21a is inserted into the insertion hole 29Rb of the clutch member 29R. The small diameter portion 21a is a state where the outer diameter of the tip portion on the −X side of the rotating shaft portion 21R is reduced at the stepped portion 21b. A screw member 33R is attached to the −X side end face of the small diameter portion 21a. The clutch member 29R is restricted from coming off in the −X direction at the small diameter portion 21a by the screw member 33R. The head of the screw member 33R is formed with a diameter that does not interfere with the tooth mold 29t provided on the end surface 29Ra of the right clutch member 29R. This clutch member 29R is movable in the direction of the rotation center axis AX3 (X direction) between the step portion 21b and the screw member 33R.

The small diameter portion 21a has an orientation flat portion 21f. On the other hand, the insertion hole 29Rb of the clutch member 29R has a flat portion corresponding to the orientation flat portion 21f. Accordingly, since the flat surface portion of the insertion hole 29Rb corresponds to the orientation flat portion 21f, the clutch member 29R can move between the step portion 21b and the screw member 33R in the small diameter portion 21a, while the rotation center axis AX3 is Rotation around the axis is restricted.
In addition, it is good also as a structure which forms a key groove in each of the small diameter part 21a and the clutch member 29R, and inserts a key in the key groove of both members.

Further, the left clutch member 29L has an insertion hole 29Lb penetrating along the rotation center axis AX3 in the center portion. The left rotation shaft portion 21L is provided with a small diameter portion 21c at the tip on the + X side. The small diameter portion 21c is inserted into the insertion hole 29Lb. The small diameter portion 21c is a state in which the outer diameter of the tip portion on the + X side of the rotation shaft portion 21L is reduced at the step portion 21d. A screw member 33L is attached to the + X side end face of the small diameter portion 21c. The clutch member 29L is restricted from coming off in the + X direction at the small diameter portion 21c by the screw member 33L. The left clutch member 29L is disposed in contact with the screw member 33L.

A spacer 34 is disposed between the clutch member 29L and the step portion 21d. By this spacer 34, the clutch member 29L is in a state in which movement in the X direction is restricted. The clutch member 29L is sandwiched between the spacer 34 and the screw member 33L, so that the movement in the direction of the rotation center axis AX3 (X direction) is restricted. Thus, by using the spacer 34, the configuration of the small diameter portion 21c and the step portion 21d in the left rotation shaft portion 21L is made the same as the configuration of the small diameter portion 21a and the step portion 21b of the right rotation shaft portion 21R. Can do. Therefore, it is not necessary to design the left and right rotating shaft portions 21 and the left and right clutch members 29 separately on the left and right sides, and the right and left common members can be used, thereby reducing the design burden and the manufacturing cost. Can do.

Further, the small diameter portion 21c of the rotation shaft portion 21L has an orientation flat portion, like the small diameter portion 21a of the rotation shaft portion 21R. On the other hand, the insertion hole 29Lb of the clutch member 29L has a flat portion in the same manner as the insertion hole 29Rb of the clutch member 29R. Accordingly, since the flat portion of the insertion hole 29Lb corresponds to the orientation flat portion, the clutch member 29L is restricted from rotating around the rotation center axis AX3 at the small diameter portion 21c.

In the above configuration, the left clutch member 29L is restricted from moving in the direction of the rotation center axis AX3, and the right clutch member 29R is movable in the direction of the rotation center axis AX3. However, the present invention is not limited to this configuration. For example, the clutch 25 may be configured such that the right clutch member 29R is restricted from moving in the direction of the rotation center axis AX3 and the left clutch member 29L is movable in the direction of the rotation center axis AX3. Both the member 29L and the right clutch member 29R may be movable in the direction of the rotation center axis AX3.

The clutch 25 connects the clutch members 29 by moving the right clutch member 29R in the −X direction and bringing it into contact with the left clutch member 29L. In the present embodiment, the tooth mold 29t of the right clutch member 29R is set to mesh with the tooth mold 29t of the left clutch member 29L at a position where the end surface 29Ra abuts or substantially abuts on the screw member 33R. Hereinafter, the position in the connected state in which the right clutch member 29R is connected to the left clutch member 29L is referred to as a connection position (connection position) P1.

Also, the clutch 25 moves the right clutch member 29R in the + X direction and separates it from the left clutch member 29L, thereby releasing the connection between the clutch members 29. Hereinafter, the position in the released state where the right clutch member 29R is disconnected from the left clutch member 29L is referred to as a release position P2.

The elastic body 30 applies an elastic force in the −X direction toward the left clutch member 29L to the movable right clutch member 29R. For example, a spring member is used as the elastic body 30. In the present embodiment, the elastic body 30 is a coil spring and is mounted on the outer periphery of the rotating shaft portion 21R between the clutch member 29R and the right pinion 27R. The + X side end of the elastic body 30 is supported by the right pinion 27R. The −X side end of the elastic body 30 is in contact with the + X side surface of the right clutch member 29R. With this configuration, the elastic body 30 applies an elastic force in the −X direction to the right clutch member 29R.

The clutch slide 31 has a base portion 31a, two arm portions 31b, and two

guide grooves

31c and 31d. The base 31a has a rectangular plate shape and is arranged in contact with the inner surface 13a on the + Z side of the connecting portion 13. The arm portion 31b is provided to protrude in the −Z direction from the + Y side and the −Y side at the + X side end of the base portion 31a. The two arm portions 31b are inserted into the −X side surface side of the flange portion 29f provided on the + X side of the clutch member 29R.

The

guide grooves

31c and 31d have an oval shape and are provided so as to extend in the X direction.

Projection portions

13c and 13d provided on the inner surface 13a of the connecting portion 13 are inserted into the

guide grooves

31c and 31d, respectively. The

protrusions

13c and 13d are provided side by side in the X direction. The clutch slide 31 is moved in the X direction (rotation center axis AX3 direction) by the

guide grooves

31c and 31d being guided by the

protrusions

13c and 13d, so that the movement in the Y direction and the rotation around the axis in the Z direction are performed. Be regulated. Note that the present invention is not limited to using the two

guide grooves

31c and 31d. For example, one oval guide groove is provided and both the two

protrusions

13c and 13d are inserted. May be.

Further, the clutch slide 31 can slide in the direction of the rotation center axis AX3 by the size of the

guide grooves

31c and 31d. By moving the clutch slide 31, the clutch member 29R into which the two arm portions 31b are inserted can be moved in the direction of the rotation center axis AX3. That is, the clutch slide 31 moves integrally with the clutch member 29R in the direction of the rotation center axis AX3.
Note that the

guide grooves

31c and 31d have a sufficiently long dimension, and the position where the clutch member 29R comes into contact with each of the screw member 33R (−X direction) and the stepped portion 21b (+ X direction) is defined as a restriction position. The clutch slide 31 may be slidable inside.

Further, the clutch member 29R is given an elastic force in the −X direction by the elastic body 30. Therefore, the clutch slide 31 is in a state where an elastic force is applied in the −X direction by the elastic body 30 via the clutch member 29R. The clutch slide 31 can slide in the + X direction against the elastic force of the elastic body 30, and the clutch member 29R can be moved in the + X direction by this slide. Further, the clutch slide 31 after sliding to the + X side slides in the −X direction as the clutch member 29R moves in the −X direction by the elastic force of the elastic body 30.

The clutch 25 moves in the −X direction by the elastic force of the elastic body 30 when the clutch slide 31 is not slid in the + X direction. In this state, the clutch member 29L and the clutch member 29R are connected. . Further, when the clutch 25 slides the clutch slide 31 in the + X direction against the elastic force of the elastic body 30, the clutch member 29R moves in the + X direction, and the clutch member 29R is released from the clutch member 29L. Become.

The connection / release member 32 switches so that the clutch member 29R is in the connection position P1 or the release position P2. The connection / release member 32 is provided in the connecting portion 13 in the main body portion 11. The connection / release member 32 includes a clutch knob 32a and a cam portion 32b. The clutch knob 32 a is disposed outside the connecting portion 13, for example, on the + Z side surface of the connecting portion 13. The clutch knob 32a is a part that is manually operated by an observer. The clutch knob 32a is rotatable around a knob center axis AX4 (see FIG. 11). The knob center axis AX4 is parallel or substantially parallel to the Z direction, but may be set to be inclined with respect to the Z direction. The cam portion 32b is provided integrally with the clutch knob 32a on the −Z side of the clutch knob 32a. The cam portion 32b is integrated with the clutch knob 32a and rotates about the knob central axis AX4.

FIGS. 11A and 11B are perspective views showing an example of the rotational force transmission unit 24 and the clutch 25. FIG. FIGS. 11A and 11B show an example in which the cam portion 32b rotates around the knob central axis AX4. As shown in FIGS. 11A and 11B, the cam portion 32b has a shape in which the straight portion C1 and the circular portion C2 are combined in a plan view, and the cam along the outer peripheral surface of this shape. A surface 32c is provided. The straight line portion C1 and the circular portion C2 are provided so as to be connected smoothly. The cam portion 32b is disposed so that the cam surface 32c contacts the −X side end of the clutch slide 31. The cam surface 32 c receives the elastic force of the elastic body 30 through the clutch slide 31. The cam surface 32c receives the clutch slide 31 that moves in the -X direction, and defines the position of the clutch slide 31 in the X direction.

The distance from the knob center axis AX4 is L1 in the straight part C1 of the cam surface 32c, and the distance from the knob center axis AX4 is L2 in the circular part C2. The distance L1 is set smaller than the distance L2. By switching the position of the cam surface 32c in contact with the clutch slide 31 between the linear portion C1 and the circular portion C2, the clutch slide 31 is moved relative to the knob central axis AX4 fixed to the main body portion 11 (connecting portion 13). The position in the X direction can be switched between the distance L1 and the distance L2. That is, the position of the clutch slide 31 can be changed by rotating the clutch knob 32a about the knob central axis AX4. With the change of the position of the clutch slide 31, the position of the clutch member 29R in the X direction is changed.

In this embodiment, as shown in FIG. 11A, when the straight portion C1 of the cam surface 32c contacts the clutch slide 31, the clutch slide 31 is pushed by the elastic body 30 and arranged on the −X side. As a result, the right clutch member 29R is disposed at the connection position P1, and is brought into a connected state by contacting the left clutch member 29L. Further, as shown in FIG. 11B, when the circular portion C2 of the cam surface 32c contacts the clutch slide 31, the clutch slide 31 moves to the + X side against the elastic force of the elastic body 30. As a result, the clutch member 29R is disposed at the release position P2, and is released from the clutch member 29L.

The clutch knob 32a is rotatable between a rotation position R1 when the right clutch member 29R is disposed at the connection position P1 and a rotation position R2 when the right clutch member 29R is disposed at the release position P2. is there. The clutch knob 32a is provided in a teardrop shape so that an observer can visually recognize the state where the clutch knob 32a is rotating to the rotation position R1 or the rotation position R2. The clutch knob 32a is provided with a holding member, a holding mechanism, or the like so that the clutch knob 32a holds each position in a state where the clutch knob 32a is disposed at each of the rotation position R1 and the rotation position R2, for example. Also good. Note that, at the rotation position R1, since the straight portion C1 is in contact with the clutch slide 31, the rotation of the cam portion 32b (clutch knob 32a) is restricted. Note that the linear portion C1 and the clutch slide 31 may be non-contact at the rotational position R1. In this case, since an elastic force acts on the clutch slide 31 in the −X direction side by the elastic body 30 via the clutch member 29R, the clutch slide 31 is fixed at a position where movement in the −X direction side is restricted. The In addition, since the circular portion C2 is in contact with the clutch slide 31 at the rotational position R2, the distance L2 that is the radius of the circular portion C2 is maintained even if the cam portion 32b rotates slightly. Is regulated.

When rotating the rotation shaft portion 21L and the rotation shaft portion 21R as a unit (with the left and right rotation shaft portions 21) integrated, the clutch knob 32a is disposed at the rotation position R1 described above. In this case, as shown in FIG. 11A, since the straight portion C1 of the cam surface 32c contacts the clutch slide 31, the right clutch member 29R is disposed at the connection position P1. As a result, the clutch member 29L and the clutch member 29R are connected (the left and right clutch members 29 are connected).

In this state, by rotating one of the left and right focusing knobs 22 about the rotation center axis AX3, the rotation shaft portion 21 to which the focusing knob 22 is attached rotates about the rotation center axis AX3. This rotation is transmitted to the other rotation shaft portion 21 via the clutch 25. Therefore, the left and right rotating shaft portions 21 rotate together.

Rotating the left and right rotating shafts 21 together causes the left and right pinions 27 to rotate together. Due to the rotation of the left and right pinions 27, the same rotational force is transmitted to the left and right racks 28, and the left and right lens holding members 23 move in the Y direction in a similar or substantially similar manner. As the left and right lens holding members 23 move, the left and right focusing lenses 14 move in the axial direction (Y direction) of the optical axis 3 in the same or almost the same manner. For this reason, focusing in the left and right optical systems 2 is performed simultaneously or substantially simultaneously. When either one of the left and right focusing knobs 22 is rotated, the other focusing knob 22 also rotates, so that the observer can select the other focusing knob 22 (the focusing knob 22 that is not operated). ), It can be easily confirmed that the left and right rotating shaft portions 21 are rotating together.

When rotating the rotation shaft portion 21L and the rotation shaft portion 21R independently (the left and right rotation shaft portions 21), the clutch knob 32a is disposed at the rotation position R2 described above. In this case, as shown in FIG. 11B, since the circular portion C2 of the cam surface 32c contacts the clutch slide 31, the clutch slide 31 moves in the + X direction, and the clutch member 29R is disposed at the release position P2. . As a result, the clutch member 29R is separated from the clutch member 29L, and the left and right clutch members 29 are disconnected from each other.

12 to 15 are diagrams showing a released state in which the connection between the left and right clutch members 29 is released. FIG. 12 corresponds to FIG. 13 is a cross-sectional view taken along the line EE of FIG. 12, and corresponds to FIG. FIG. 14 is a cross-sectional view taken along line FF in FIG. 12, and corresponds to FIG. 15 is an enlarged view of a part of the clutch shown in FIG. 13, and corresponds to FIG. 12 to 15, the same members and the like as those described above are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIGS. 12 to 15, one of the left and right focusing knobs 22 L and 22 R is rotated around the axis of the rotation center axis AX 3 in the released state where the connection between the left and right clutch members 29 L and 29 R is released. As a result, one of the

rotation shaft portions

21L and 21R rotates around the rotation center axis AX3. Here, since the connection between the left and right

clutch members

29L and 29R is released, even if one of the rotating shaft portions 21 (for example, the clutch member 29R) is rotated, this rotation is performed on the other rotating shaft portion 21 (for example, the rotating shaft portion 21). It is not transmitted to the clutch member 29L). Therefore, it is possible to independently rotate the

rotation shaft portions

21L and 21R that rotate the focusing

knobs

22L and 22R among the left and right

rotation shaft portions

21L and 21R.

When the left and right

rotating shaft portions

21L and 21R rotate independently, the left and

right pinions

27L and 27R rotate integrally and independently with the

rotating shaft portions

21L and 21R. For example, when the left focusing knob 22L is rotated, the left pinion 27L is rotated and the rotation is transmitted to the left rack 28L. When the right focusing knob 22R is rotated, the right pinion 27R is rotated and the rotation is transmitted to the right rack 28R. As described above, the rotation is independently transmitted to the left and

right racks

28L and 27R, whereby the left and right

lens holding members

23L and 23R are independently moved in the Y direction. By the independent movement of the left and right

lens holding members

23L and 23R, the left and right focusing lenses 14 are independently moved in the directions of the optical axes 3L and 3R (Y direction). As a result, the focusing operation is performed independently in the left and right

optical systems

2L and 2R.

From the state shown in FIGS. 12 to 15, the clutch knob 32a is disposed at the rotational position R1 described above. Since the straight portion C1 of the cam surface 32c contacts the clutch slide 31, the right clutch member 29R is disposed at the connection position P1. As a result, the clutch member 29L and the clutch member 29R are connected (the left and right clutch members 29 are connected), and the state shown in FIG. 5 can be obtained.

In the above-described clutch 25, the form of the cam portion 32b is not limited to the form shown in the figure. For example, the cam portion 32b may be an elliptical cam portion in plan view or a circular cam portion in plan view. When an elliptical cam portion is used, the distance from the knob central axis AX4 can be changed between the long axis side and the short axis side by rotating the cam portion. When a circular cam portion is used, the distance from the knob center axis AX4 can be changed depending on the rotational position of the cam portion by decentering the knob center axis AX4 with respect to the cam portion.

Note that the observer may directly operate the clutch slide 31 by hand without using the cam portion. In this case, the clutch member 29R can be fixed at the release position by sliding the clutch slide 31 to the release position P2 and fixing the clutch slide 31 with a separately provided fixing member. On the other hand, when the clutch slide 31 is removed from the fixing by the fixing member, the clutch member 29R moves to the position where movement in the −X direction is restricted by the elastic force of the elastic body 30, that is, the connection position P1, and the clutch slide 31 is also slid to the connection position P1. At this time, the elastic force by the elastic body 30 always acts on the clutch slide 31 in the −X direction.

Further, the clutch 25 as the switching unit is not limited to the above-described configuration, and any mechanism capable of integrating the left and right rotating shafts 21 (connecting the left and right clutch members 29) or disengaging them is used. be able to. Further, the present invention is not limited to the configuration in which the sliding of the clutch slide 31 is performed by the rotation of the cam portion 32b of the connection / release member 32, and the configuration in which the clutch slide 31 is moved using a driving force such as an electric motor. It may be.

Further, for example, instead of the clutch 25, magnets having a strong magnetic force may be attached to the left and right rotating shaft portions 21. By attaching an N-pole magnet to one of the rotating shaft portions 21 and an S-pole magnet to the other rotating shaft portion 21 and moving the left and right magnets close to each other, the left and right rotating shaft portions 21 are simultaneously rotated by magnetic force. Can be made. On the other hand, the left and right rotating shaft portions 21 can be independently rotated by separating the left and right magnets to a position where the mutual magnetic force is weakened.

Next, a method for focusing the binoculars 100 described above will be described. The focusing method of the binoculars 100 is such that the focusing lens 14 of the

optical systems

2L and 2R that form the image of the object, which is disposed in each of the left and right lens barrels 10L and 10R, is rotated around the rotation axis AX3 along the X direction. For each of the

optical systems

2L and 2R, the pair of

rotary shafts

21L and 21R arranged coaxially with each other are rotated independently of each other to move in the optical axis direction (Y direction) of the respective optical axes 3L and 3R. By focusing on the object and rotating the pair of

rotating shaft portions

21L and 21R as a unit, the focusing lens 14 of the

optical systems

2L and 2R is moved in the optical axis direction (Y And simultaneously focusing the object in both

optical systems

2L and 2R.

When using the above-described binoculars 100, the observer first adjusts the left-right diopter difference. In the following description, for example, a procedure for adjusting the left-right diopter difference by performing the focusing on the left eye after the focusing on the right eye, which is the dominant eye, will be described. The observer rotates the focusing

knobs

22R and 22L on the left and right while looking through the eye 7R of the binoculars 100 with the right eye while the clutch knob 32a is disposed at the rotational position R1. The left and right

rotating shaft portions

21L and 21R are integrally rotated, and the positions of the left and right focusing lenses 14 are integrally adjusted simultaneously. At this time, since the positions of the left and right focusing lenses 14 are adjusted at the same time, there is a possibility that the left eye is not in focus even though the right eye is in focus.

Thereafter, the observer places the clutch knob 32a at the rotational position R2. In this state, the observer rotates the focusing shaft 22L by rotating the focusing knob 22L while looking through the eye 7L of the binoculars 100 with a left eye with respect to a predetermined object, and the focusing lens 14 in the optical system 2L is rotated. Adjust the position. At this time, the focusing knob 22R may be held by hand so as not to rotate, or may not be touched. In addition, the binoculars 100 described above may be provided with a holding mechanism that holds the rotational positions of the

rotary shaft portions

21L and 21R. By rotating the focusing knob 22L in a state where the rotation shaft portion 21R is held by the holding mechanism, the rotation of the rotation shaft portion 21R can be regulated while rotating the rotation shaft portion 21L.

In this manner, the focal positions of the right and left eyes of the observer are adjusted to adjust the diopter difference between the left and right eyes. In the above example, the focal position is adjusted first for the right eye, but the focal position may be adjusted first from the left eye. Thereafter, the observer places the clutch knob 32a at the rotational position R1. For example, when observing another object, when the focus position is adjusted with respect to the object, the observer observes the object with both the left and right eyes, while focusing on one of the left and right focusing knobs 22L, The focusing operation is performed by rotating 22R. By this operation, the left and right

rotating shaft portions

21L and 21R rotate integrally, and the positions of the left and right focusing lenses 14 are integrally adjusted simultaneously. In other words, it is possible to perform the focusing operation on the object at the same time on the left and right while maintaining the diopter difference between the left and right.

When readjustment of the left / right diopter difference is made, the observer places the clutch knob 32a at the rotation position R2 and rotates the focusing

knobs

22L and 22R on the side where the focus position is to be readjusted. The rotation of the focusing

knobs

22L and 22R causes the

rotation shafts

21L and 21R on the side where the focus position is to be readjusted, and the rotation of the focusing lens 14 moves the readjustment of the focus position. Is possible. Thereafter, the observer sets the clutch knob 32a at the rotation position R1 and rotates one of the focusing

knobs

22L and 22R, so that the left-right diopter difference is readjusted, The focusing operation on the object can be performed simultaneously on the left and right.

According to the binoculars 100 and the focusing method according to the present embodiment, when the left and right optical systems 2 are focused on an object, the left and right optical systems 2 are moved together in the optical axis direction of the optical axis 3; The operation of moving the left and right optical systems 2 independently of each other in the direction of the optical axis of the optical axis 3 can be switched.

As mentioned above, although embodiment of this invention was described, the technical scope of this invention is not limited to the aspect demonstrated by above-described embodiment. One or more of the requirements described in the above-described embodiments may be omitted. In addition, the requirements described in the above-described embodiments and the like can be combined as appropriate.

In the above-described embodiment, the focusing lens 14 has been described as an example of the optical system 2 to be moved in the optical axis direction of the optical axis 3 by the focusing mechanism 20, but is not limited to this configuration. For example, a part or all of the eyepiece lens 17 may be moved in the optical axis direction of the optical axis 3 by the focusing mechanism 20, and a part or all of the objective lens 16 may be moved in the optical axis direction of the optical axis 3. It may be configured to move to. In this case, the focusing mechanism 20 is arranged in accordance with the eyepiece 17 or the objective lens 16, but the focusing knob 22 is arranged in a range that can be reached by an observer.

In the above-described embodiment, the left and right

rotation shaft portions

21L and 21R have been described by taking the configuration in which they are arranged coaxially as an example. However, the present invention is not limited to this configuration. For example, the left and right

rotating shaft portions

21L and 21R may be arranged so as to be shifted from the same axis.

In the above-described embodiment, the configuration in which the left and right focusing knobs 22 are disposed outside the left and right lens barrels 10L and 10R has been described as an example. However, the present invention is not limited to this configuration, and is disposed at other positions. May be. Further, for example, a focusing knob 22L for rotating the left rotating shaft portion 21L and a focusing knob 22R for moving the right rotating shaft portion 21R may be arranged in one of the lens barrels 10L and 10R. You may arrange | position in the center part (for example, connection part 13) between right-and-left lens-

barrel

10L, 10R.

In the above-described embodiment, the focusing mechanism 20 and the focusing knob 22 are exemplified as a configuration that is disposed on the eyepiece 17 side of the horizontal rotation axis AX2 and in the range of the objective side from the erecting prism 15. Although described above, it is not limited to this configuration. For example, at least one of the focusing mechanism 20 and the focusing knob 22 may be disposed on the objective side with respect to the horizontal rotation axis AX2, or may be disposed on the eyepiece 17 side with respect to the erecting prism 15.

In the above-described embodiment, the focusing lens 14 is held by the lens holding member 23, and the configuration in which focusing is performed by moving the lens holding member 23 in the Y direction has been described as an example. It is not limited to. For example, a configuration in which the focusing lens 14 is not held by the lens holding member 23 and the focusing lens 14 is directly moved in the Y direction may be applied.

In the above-described embodiment, the configuration of the rotational force transmitting unit 24 has been described by taking as an example the configuration having the same pinion 27 and rack 28 in the left and right lens barrels 10L, 10R, but is not limited to this configuration. For example, as long as the rotational force of the rotating shaft portion 21 can be transmitted to the lens holding member 23, the rotational force transmitting portions 24 having different configurations may be applied to the left and right lens barrels 10L and 10R. For example, the contact portion between the rotation shaft portion 21 and the lens holding mechanism 23 is formed of an elastic material such as rubber, and the rotation force when the rotation shaft portion 21 is rotated is converted into the friction force at the contact portion to hold the lens. It may be configured to transmit to the mechanism 23. In addition, as far as permitted by law, the disclosure of all documents cited in this specification is incorporated as part of the description of the text.

P1 ... Connection position, P2 ... Release position, R1, R2 ... Rotation position, AX1 ... Vertical rotation axis, AX2 ... Horizontal rotation axis, AX3 ... Rotation center axis, AX4 ... Knob center axis, AX5 ... cam center axis, 100 ... binoculars (optical equipment), 2, 2L, 2R ... optical system, 2c, 12c, 31b ... arm, 3, 3L, 3R ... Optical axis, 10, 10L, 10R ... Lens barrel, 11 ... Main body part, 13 ... Connection part, 13a ... Inner surface, 13c, 13d ... Projection part, 14 ... Focusing lens, 15 ... erecting prism, 16 ... objective lens, 17 ... eyepiece, 20 ... focusing mechanism, 21, 21L, 21R ... rotating shaft, 22, 22L, 22R: Focusing knob, 23, 23L, 23R ... Lens holding member, 24 ... Rotational force transmission part 25 ... Clutch (switching part), 27, 27L, 27R ... Pinion, 28, 28L, 28R ... Rack, 29, 29L, 29R ... Clutch member, 29t ... Tooth type, 29La, 29Ra ... end face, 30 ... elastic body, 31 ... clutch slide, 32 ... connection / release member, 32a ... clutch knob, 32b ... cam part, 32c ... cam surface

Claims

Left and right lens barrels each equipped with an optical system for forming an image of the object;
A focusing mechanism for moving the optical system in the optical axis direction of the optical system to focus on the object;
With
The focusing mechanism is capable of switching between integral driving of the optical systems of the left and right lens barrels along the optical axis direction, and independent driving of the optical systems. Optical equipment.
The focusing mechanism is a pair of rotating shafts arranged corresponding to each of the left and right lens barrels along a direction perpendicular or substantially perpendicular to a plane including the optical axis direction, and the rotation mechanism A rotating shaft that moves the optical system in the direction of the optical axis by rotating around the axis of the shaft;
The optical apparatus according to claim 1, further comprising: a switching unit configured to switch between a rotation of the pair of rotating shafts around the axis and a rotation independent of each other.
3. The optical apparatus according to claim 2, wherein each of the pair of rotating shaft portions is disposed coaxially corresponding to each of the left and right lens barrels.
The focusing knob for rotating the rotating shaft portion around the axis is provided on the opposite side of the pair of rotating shaft portions to the side where the rotating shaft portions face each other. The optical apparatus according to claim 3.
The optical apparatus according to claim 4, wherein the focusing knob can be gripped from outside the optical apparatus.
The left and right lens barrels are supported so as to be rotatable around a horizontal rotation axis that is parallel or substantially parallel to the horizontal direction,
5. The focusing mechanism and the focusing knob are arranged on an eyepiece lens side with respect to the horizontal rotation axis and in a range closer to an object side than an erecting prism arranged as the optical system. Item 6. The optical instrument according to Item 5.
The focusing mechanism is
A lens holding member that is arranged inside each of the left and right lens barrels and holds the optical system;
The rotational force transmission part which transmits the rotational force of the said rotating shaft part around the said axis | shaft to the said lens holding member, and moves the said lens holding member to the said optical axis direction, The any one of Claim 2-6 An optical device according to any one of the above.
The rotational force transmission part is
A pinion provided on each of the pair of rotating shaft portions;
A rack that is provided on the lens holding member in each of the left and right lens barrels and meshes with each of the pinions,
The optical apparatus according to claim 7, wherein the rotation force of the pinion due to the rotation of the rotation shaft portion around the axis is transmitted to the rack to move the lens holding member in the optical axis direction.
The switching unit has a clutch for connecting and releasing the pair of rotating shafts,
The clutch has a clutch member on a side where the pair of rotating shaft portions face each other, and the pair of rotating shaft portions rotate integrally around the shaft by connecting the clutch members, and the clutch members The optical apparatus according to any one of claims 2 to 8, wherein each of the pair of rotating shaft portions independently rotates around the axis by releasing the rotation.
At least one of the clutch members is slidable along the length direction of the rotation shaft portion with respect to the rotation shaft portion, and rotation around the shaft relative to the rotation shaft portion is restricted. Attached to the rotating shaft,
The clutch member is slid along the length direction of the rotating shaft portion, and the clutch member is released by separating from the other clutch member,
The optical apparatus according to claim 9, wherein the clutch members are connected to each other by sliding the clutch members along a length direction of the rotating shaft portion and bringing the clutch members into contact with any one of the other clutch members.
11. The optical apparatus according to claim 10, wherein a portion of the clutch member facing each other has a tooth shape that engages when the clutch members are connected to each other.
The clutch is
An elastic body that applies an elastic force to at least one of the clutch members along the length direction of the rotating shaft portion toward the other clutch member;
A clutch slide that slides the clutch member to which an elastic force is applied by the elastic body along the length direction of the rotating shaft portion,
The clutch members are released by sliding the clutch member along the length direction of the rotating shaft portion against the elastic force of the elastic body by sliding the clutch slide. Or the optical instrument of Claim 11.
13. The optical apparatus according to claim 12, wherein the clutch includes a positioning member for sliding the clutch slide and fixing the clutch slide at a position where the clutch members are released from each other.
The clutch is
A clutch slide that slides at least one of the clutch members along the length direction of the rotating shaft;
11. A positioning member that positions the clutch slide so that the clutch member is fixed at a connection position or a release position between the clutch members by sliding the clutch slide. 11. The optical apparatus according to 11.
15. The optical apparatus according to claim 13, wherein the positioning member is disposed in a connecting portion that connects the left and right lens barrels.
The optical system includes a plurality of lenses,
The optical apparatus according to claim 1, wherein the focusing mechanism moves at least one of the plurality of lenses in the optical axis direction.
The optical device according to claim 16, wherein the plurality of lenses include a focusing lens.
The optical device according to claim 16 or 17, wherein the lens that moves in the optical axis direction by the focusing mechanism is disposed in the lens barrel and is not exposed to the outside.
Moving the optical system that forms the image of the object in each of the left and right lens barrels in the optical axis direction of the optical system to focus on the object;
Focusing of the optical apparatus, including switching the integrated driving of the optical systems of the left and right lens barrels along the optical axis direction and the independent driving of the optical systems. Method.