JP5875893B2 - Optical device, method for adjusting optical component, and method for manufacturing optical device - Google Patents

Description

  The present invention relates to an optical device, a method for adjusting an optical component, and a method for manufacturing an optical device. More specifically, the optical component is arranged in one lens barrel so as to share one optical axis with a small and simple configuration. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical device, a method for manufacturing the same, and a method for adjusting an optical component in which an optical component arranged in one lens barrel can be adjusted and arranged to share one optical axis with a small and simple configuration.

  According to one classification example, a telescope as an optical apparatus can be roughly classified into an astronomical telescope and a terrestrial telescope. The terrestrial telescope is classified into a monocular, a Galilean binocular without a prism, and a prism binocular with a prism. In such an optical apparatus, an objective lens group composed of a plurality of lenses, an eyepiece lens group composed of a plurality of lenses, and an erecting prism composed of a plurality of prisms, if desired, are generally spaced apart from each other as optical components. It is placed in the lens barrel. Here, the monocular is composed of a single lens barrel in which these optical components are arranged and housed, and the binoculars are composed of two lens barrels in which these optical components are arranged and housed and parallel to each other.

  In such an optical device, it is important that each optical component arranged at a predetermined position in the lens barrel shares one optical axis, whether it is monocular or binoculars. It is also important that the optical axes arranged in each of the lens barrels are parallel.

  However, in the assembled optical device, components such as the optical component and the holding component are not accurately arranged at the designed positions due to the respective arrangement errors of the optical components, and the optical axis may be shifted. is there. Since the optical component whose optical axis is shifted does not satisfy the required optical performance, the arrangement position of the optical component is adjusted or replaced with a different optical component. Binoculars have been proposed that can adjust the arrangement position of optical components without resolving such an optical axis shift.

  For example, Patent Document 1 describes “binoculars characterized in that the position of an erecting optical system in a plane perpendicular to the optical axis of the optical system can be adjusted from the outside of the binoculars”. . Specifically, “a wall portion perpendicular to the optical axis is provided in the support member, a screw hole is formed in a surface of the holding member facing the wall portion, and a screw is passed through the wall portion. The holding member is fixed to the support member by passing through the hole and screwed into the screw hole, and the through hole is formed to be larger than the screw by a predetermined amount. The feature is that the movement of the screw can be adjusted ”(claim 5, column 0078, column 0079 and FIG. 10). Patent Documents 2 to 4 describe techniques similar to Patent Document 1.

  By the way, due to the shape error and / or dimensional error of the component, the optical component may be inclined in the lens barrel so that the axis of the component is inclined with respect to the optical axis. For example, as shown in FIG. 9, the objective lens group 42 is configured, and the focus lens 42 a disposed in the lens barrel 41 is moved forward and backward in the optical axis direction so as to be focused and provided with an in-focus objective lens group. In the binoculars 40, the focus lens 42a arranged to be able to move forward and backward is easy to be arranged in a state where the axis of the focus lens 42a is inclined with respect to the optical axis due to its configuration. FIG. 9 shows the binoculars 40 in which the focus lens 42a is inclined with respect to the optical axis at an inclination angle θ. In prism binoculars, a plurality of prisms that are usually composed of a plurality of prisms are inclined and arranged in an inclined state. Although the optical performance of the optical device in which the optical components are inclined as described above is remarkably deteriorated, in Patent Documents 1 to 4, “the mounting angle in the vertical plane (that is, in the plane perpendicular to the optical axis) is set. Even if “fine adjustment” can be performed, the tilted arrangement of the optical components cannot be finely adjusted.

  There is a method to improve the shape accuracy and dimensional accuracy of component parts in order to prevent such tilted arrangement of optical components, but in reality, some form error is caused by complicated manufacturing technology and high manufacturing cost. And / or dimensional errors must be allowed.

  Although it is not a method of preventing the optical components from being inclined, there is a method of checking the performance of the assembled optical device and replacing the components disposed in an inclined manner when the requirements are not satisfied. However, in this method, it is necessary to repeatedly replace the components until the performance of the optical equipment satisfies the requirements, which increases labor and time, and the replacement components are not used, so that the manufacturing cost increases. Become.

  Another method for adjusting the tilted arrangement of the optical components is described in Patent Document 5. According to this technique, “in binoculars, the vertical movement of the optical axis adjustment of the left and right optical system is performed by one optical system of the left and right optical systems, and the horizontal movement of the optical axis adjustment is performed by the other of the left and right optical systems. (Prior art 1 etc.), “The prism holder 28 is urged to one side by the urging spring 31 and the adjustment screw 30 on the side opposite to the urging direction”. In this manner, a technique of “adjusting the optical axis by tilting eccentricity of a prism as an optical element” (columns 0036 to 0037 and FIG. 11) is described.

  However, since the technique of Patent Document 5 adjusts the “prism tilt eccentricity” using the “adjustment screw 30”, the vicinity of the “adjustment screw 30” in the lower left of FIG. The inclination of the prism can be adjusted only in the circumferential direction substantially along the axial direction of the “adjustment screw 30”. As described above, in the technique of Patent Document 5, the inclination of the prism can be adjusted only in this one direction, and the actual inclination arrangement may not be sufficiently supported. In addition, in the technique of Patent Document 5, since adjustment is performed with two sets of “biasing spring and adjustment screw 30”, the number of parts is large, and the optical device itself may be required to be large as well as the adjustment mechanism.

  Although it is a technique related to “focus adjustment and optical axis adjustment” of a catadioptric telescope, Patent Document 6 describes “a tube assembly having a front cell and a rear cell, and a hollow telescope having a base end and a distal end. A tube assembly comprising a tube, the rear cell at the proximal end of the telescope, and the front cell at the distal end of the telescope tube; disposed in the rear cell of the tube assembly; A primary mirror; a correction plate cell that houses a correction plate distal to the front cell of the tube assembly; and a secondary mirror that is centrally located and fixed to the correction plate of the correction plate cell And at least one electric actuator attached to the front cell and the correction plate cell to mechanically connect the correction plate cell to the front cell, wherein the correction plate cell is An actuator that is movable relative to the front cell of the assembly and that is controllably movable such that the correction plate and secondary mirror can be moved relative to the primary mirror; and electrically to the motorized actuator A catadioptric telescope comprising a control electronic device connected to the control electronic device, the control electronic device having an output that transmits to the electric actuator to control movement of the actuator. Yes. This catadioptric telescope needs to have at least one “actuating device” or the like outside the telescope, and three in FIG. 3 in order to effectively adjust the focus and adjust the optical axis.

  Normally, the catadioptric telescope is large and placed on a tripod 110 or the like, so that even if a differential or the like is attached to the outside, no serious problems will occur, but a smaller and simple structure is preferable. Needless to say. Considering the operability of binoculars and the like that are often used without being placed on a tripod or the like, it is a matter that should be avoided to attach the actuator to the outside of the lens barrel even if it is small. Thus, there is a need for an apparatus, a structure, and the like that can adjust the optical axis that can be mounted inside a lens barrel with a small and simple configuration even for a relatively large telescope.

Japanese Patent Laid-Open No. 10-104496 JP-A-10-123404 Japanese Patent Laid-Open No. 10-123431 Japanese Patent Laid-Open No. 10-123432 JP-A-9-304704 Special table 2008-507740

  An object of the present invention is to provide an optical device in which an optical component is arranged in one lens barrel so as to share one optical axis with a small and simple configuration, and a manufacturing method thereof.

  It is another object of the present invention to provide an optical component adjustment method capable of adjusting and arranging optical components arranged in one lens barrel so as to share one optical axis with a small and simple configuration.

Means for solving the above-mentioned problem is an optical apparatus including an optical component including an objective lens group, a prism, and an eyepiece lens group arranged at a distance from each other on the object side,
The optical components and interior holding at least one inner frame having at least one inner frame holes on the circumferential surface, and, to interior of the inner frame has an outer frame hole on a peripheral surface that communicates with the frame hole At least one set of the inner frame hole and the outer frame hole, which has an outer frame and communicates with each other, extends in a direction intersecting the axis of the lens barrel with one having a circular hole and the other having a width different from the diameter of the circular hole. An adjustment frame that is a long hole,
And a fixing member for fixing the said outer frame and said inner frame,
The fixing member is disposed in the elongated hole and has a cylindrical base portion having a rotated operation portion at one end, and has a diameter different from that of the cylindrical base portion and extends from the other end of the cylindrical base portion in the axial direction of the cylindrical base portion. along extend to eccentrically relative to the cylindrical base portion, an optical device which comprises an eccentric pin having said cylindrical leg portion disposed in a circular hole.

It means for solving the above problems, the optical instrument from the object side to the lens barrel mutually arranged at a distance the objective lens group, prisms and the claims 1-6 of the optical components, including eyepiece group The arrangement state of the optical component held internally in the adjustment frame according to any one of claims 1 to 6 , wherein the arrangement state of the optical component is inserted into the outer frame hole and the inner frame hole. A method of adjusting an optical component, comprising: adjusting the eccentric pin by rotating the eccentric pin.

Means for solving the above-mentioned problem is the step of disposing optical components including an objective lens group, a prism and an eyepiece lens group in a lens barrel of an optical apparatus at a distance from the object side,
The optical component according to claim 7 or 8 , wherein, after the step of arranging, the arrangement state of the optical component that is internally held by the adjustment frame according to any one of claims 1 to 6 among the optical components. And a step of adjusting by an adjustment method .

  The optical apparatus according to the present invention includes an adjustment frame having an inner frame and an outer frame, and a fixing member for fixing the inner frame and the outer frame, so that the optical apparatus is inclined by the inner frame hole and the outer frame hole, which are small and simple configurations. The optical component is arranged and fixed in the lens barrel in a state where the arrangement and the angle around the optical axis are both adjusted. Therefore, according to the present invention, it is possible to provide an optical apparatus in which optical components are arranged in one lens barrel so as to share one optical axis with a small and simple configuration.

  Further, the method for adjusting an optical component according to the present invention includes a step of adjusting the arrangement state of the optical component internally held in the adjustment frame by rotating the eccentric pin inserted and disposed in the outer frame hole and the inner frame hole. Therefore, it is possible to adjust the inclination and the angle around the optical axis of the inner frame that holds the optical component internally with the inner frame hole and the outer frame hole, which are small and simple configurations. Therefore, according to the present invention, it is possible to provide an optical component adjustment method capable of adjusting and arranging optical components arranged in one lens barrel so as to share one optical axis with a small and simple configuration.

  Furthermore, the manufacturing method of the optical device according to the present invention includes a step of arranging the optical component in the lens barrel and a step of adjusting the arrangement state of the optical component held in the adjustment frame by the optical component adjusting method according to the present invention. Therefore, it is possible to adjust the inclination and the angle around the optical axis of the inner frame in which the optical component is internally held by the inner frame hole and the outer frame hole, which are small and simple configurations. Therefore, according to the present invention, it is possible to provide a method of manufacturing an optical device in which optical components are arranged in one lens barrel so as to share one optical axis with a small and simple configuration.

FIG. 1 is a schematic longitudinal sectional view showing a first lens barrel of prism binoculars which is an example of an optical apparatus according to the present invention. FIG. 2 is a schematic cross-sectional view showing the AA cross section of FIG. FIG. 3 is a schematic view showing an arrangement state of the eccentric pins in the prism binoculars which is an example of the optical apparatus according to the present invention. FIG. 4 is a diagram showing an eccentric pin of prism binoculars which is an example of the optical apparatus according to the present invention, FIG. 4 (a) is a bottom view of the eccentric pin, and FIG. 4 (b) is a diagram of the eccentric pin. FIG. 4C is a side view, and FIG. 4C is a top view of the eccentric pin. FIG. 5 is a schematic plan view showing prism binoculars which is an example of the optical apparatus according to the present invention. FIG. 6 is a schematic view showing a modification of the adjustment frame in the optical apparatus according to the present invention. FIG. 7 is a schematic cross-sectional view showing a prism binocular which is another example of the optical apparatus according to the present invention. FIG. 8 is a schematic perspective view showing a part of a first lens barrel in prism binoculars which is another example of the optical apparatus according to the present invention. FIG. 9 is a schematic longitudinal sectional view showing a state in which the focus lens is inclined in the conventional binoculars.

  The optical apparatus according to the present invention includes an adjustment frame for holding at least one of the optical components and a fixing member, and the adjustment frame can be displaced so that each axis is inclined and can be fixed after the displacement. It has a technical feature that it has an inner frame and an outer frame. Therefore, the optical apparatus according to the present invention can be configured basically in the same manner as the conventional optical apparatus except for the adjustment frame and the fixing member.

  A basic configuration of the optical apparatus according to the present invention will be described. As shown in FIG. 5, a prism binocular 1 that is an example of an optical apparatus according to the present invention has a first lens barrel 3, a second lens barrel 4, a first lens barrel 3, and a second lens barrel 4 in parallel. And a rotary support 5 that is rotatably supported and a focus ring 6. This prism binocular 1 is a prism binocular provided with an in-focus objective lens group. The prism binoculars 1 are basically the same as the conventionally known prism binoculars except that the prism binoculars 1 include the adjustment frame 11 and the fixing member 12 as described above. In the prism binoculars 1, the object side, that is, the side on which the objective lens group is disposed (the lower side in FIG. 1) is referred to as “front”, and the side on which the eyepiece group is disposed (the upper side in FIG. 1). Is referred to as "rear".

  As shown in FIG. 5, the first lens barrel 3 and the second lens barrel 4 are basically the same except that they are bilaterally symmetric. Therefore, the first lens barrel 3 will be described below. As shown in FIG. 5, the first lens barrel 3 includes a lens barrel body 3 a in which optical components are incorporated, and an adjustment window 3 c that protrudes in a radial direction from a substantially center in the axial direction and opens on the upper surface. It has the support part 3b which has. As shown in FIGS. 1 and 2, the lens barrel body 3a has three adjustment holes 3d that are drilled at equal intervals in the circumferential direction and communicate with outer frame holes 18a to 18c described later. The lens barrel body 3a includes an objective lens group 7, a prism 8, and an eyepiece lens group 9 as optical components arranged at a distance from the object side to the eyepiece side, that is, from the front to the rear. ing. In the prism binoculars 1, as will be described later, the axes of the objective lens group 7, the prism 8, and the eyepiece lens group 9 are coincident with each other, and the axis of the first lens barrel 3, that is, the lens barrel body 3a is the same. I'm doing it. Therefore, in the prism binoculars 1, the objective lens group 7, the prism 8, and the eyepiece lens group 9 share one optical axis (indicated by a one-dot chain line in FIG. 1).

  The objective lens group 7, the prism 8, and the eyepiece lens group 9 can adopt a conventionally known configuration. In the prism binoculars 1, as shown in FIG. 1, the objective lens group 7 includes a first lens 7 a composed of a convex lens and a concave lens, and a second lens (also referred to as a focus lens) that is internally held in an adjustment frame 11 described later. ) 7b. This objective lens group 7 employs an in-focus objective lens including a second lens 7b that can be moved forward and backward with respect to the optical axis to adjust the focus. The prism 8 is a formation prism composed of a roof prism 8a and an auxiliary prism 8b, and the eyepiece lens group 9 is composed of two convex lenses and one concave lens.

  The first lens 7a, the prism 8 and the eyepiece 9 are directly arranged and fixed in the first lens barrel 3, but are arranged and fixed in the first lens barrel 3 via a member such as a lens frame or a prism frame, for example. Also good.

  The prism binoculars 1 includes a focus mechanism that moves the second lens 7b forward and backward with respect to the optical axis. This focus mechanism can adopt a conventionally known configuration. Specifically, the focus mechanism in the prism binoculars 1 is provided in the first lens barrel 3 and the focus ring 6 disposed on the axis of the rotation support 5 as shown in FIGS. 1 and 5. It has a wedge-shaped or L-shaped transmission mechanism component 6a disposed on the rotary support 5 side, one end connected to the focus ring 6 and the other end connected to an outer frame 16 described later.

  The prism binoculars 1 includes an adjustment frame 11 that holds at least one of the optical components internally, and a fixing member 12 that fixes the adjustment frame 11.

  As shown in FIGS. 1 to 4 and 6A, the adjustment frame 11 includes a cylindrical inner frame 15 that holds the second lens 7b so that the axis is preferably common, and an inner frame. 15 and a cylindrical outer frame 16 which is externally provided at intervals, and in some cases, in cooperation with a fixing member 12 which will be described later so that the axis of the second lens 7b coincides with the optical axis. The inclination of the second lens 7b with respect to a plane perpendicular to the optical axis, in other words, the parallelism with other optical components is adjusted.

  The inner frame 15 has three inner frame holes 17a to 17c perforated at equal intervals on the same circumference extending in a direction perpendicular to the axis of its own, and the outer frame 16 is defined with respect to its own axis. Three outer frame holes 18a to 18c drilled at equal intervals on the same circumference extending in the orthogonal direction are provided on the peripheral surface. Each of the three outer frame holes 18a to 18c is drilled at a position communicating with each of the inner frame holes 17a to 17c. Thus, since the inner frame holes 17a to 17c and the outer frame holes 18a to 18c are arranged at equal intervals, as shown in FIG. 2, the central angle between adjacent holes on a plane perpendicular to the optical axis is shown. Is 120 °.

  In the three sets of the inner frame holes 17a to 17c and the outer frame holes 18a to 18c communicating with each other, one of them is a circular hole and the other has a width different from the diameter of the circular hole and intersects the axis of the first barrel 3 It is a long hole extending to Specifically, as shown in FIGS. 2, 3 and 6A, in all the sets, the inner frame holes 17a to 17c are circular holes, and the outer frame holes 18a to 18c are inner frame holes 17a to 17a. It is a long hole extending in a direction perpendicular to the axis of the first barrel 3 with a width larger than the diameter of 17c. At this time, the diameter of the inner frame holes 17a to 17c and the width of the outer frame holes 18a to 18c are determined by the difference between the diameter of the inner frame holes 17a to 17c and the width of the outer frame holes 18a to 18c. For example, this difference is set to 0.2 to 2 mm. Further, the extending length of the outer frame holes 18a to 18c is appropriately determined so that the angle around the optical axis of the second lens 7b can be adjusted, and is set to 2 to 20 mm, for example, and is set to 5 mm in this example. ing.

  The inner frame 15 is housed inside the outer frame 16 so that the inner frame holes 17a to 17c communicate with the outer frame holes 18a to 18c. The outer diameter of the inner frame 15 and the inner diameter of the outer frame 16 are set so that there is a gap between the outer peripheral surface of the inner frame 15 and the inner peripheral surface of the outer frame 16 when the outer frame 16 is sheathed with the inner frame 15. Have been adjusted. That is, the inner frame 15 is loosely inserted into the outer frame 16 as shown in FIG. This gap is a space for allowing the inclination of the inner frame 15 with respect to the outer frame 16, and is appropriately determined in consideration of the difference between the diameter of the inner frame holes 17a to 17c and the width of the outer frame holes 18a to 18c. To be determined. The difference between the outer diameter of the inner frame 15 and the inner diameter of the outer frame 16, that is, the gap amount is set to 0.02 to 0.2 mm, for example.

  The outer frame 16 with the inner frame 15 provided therein is arranged directly on the first lens barrel 3 or via a fixed frame (not shown) so that one end of the transmission mechanism component 6a is connected and can be moved back and forth in the optical axis direction. Has been. Therefore, the second lens 7b housed in the adjustment frame 11 moves forward and backward by rotating the focus ring 6, and adjusts the focus.

  As shown in FIGS. 1 to 4 and FIG. 6A, the fixing member 12 includes a cylindrical base portion 22 having a rotated operation portion 24 at one end, and a cylindrical base portion 22 having a smaller diameter than the cylindrical base portion 22. An eccentric pin 21 having a cylindrical leg portion 23 extending so as to be eccentric with respect to the cylindrical base portion 22 along the axial direction of the cylindrical base portion 22 is included. The prism binoculars 1 includes three eccentric pins 21 a to 21 c as a fixing member 12.

  The eccentric pin 21 is composed of two cylindrical bodies that are stacked in the axial direction so that their axis lines are parallel to each other and do not coincide with each other. The cylindrical base portion 22 of the eccentric pin 21 is a large-diameter cylindrical body and is disposed in the outer frame holes 18a to 18c which are long holes, and the cylindrical leg portion 23 is a small-diameter cylindrical body which is a circular hole. It arrange | positions in the frame holes 17a-17c. Therefore, the outer diameter of the cylindrical leg portion 23 is the same as or slightly smaller than the diameter of the inner frame holes 17a to 17c, and the outer diameter of the cylindrical base portion 22 is larger than the diameter of the inner frame holes 17a to 17c. It is the same as or slightly smaller than the width of 18c. The difference in outer diameter between the cylindrical base 22 and the cylindrical leg 23 and the amount of displacement of the axis between the cylindrical base 22 and the cylindrical leg 23 are determined by the outer diameter of the cylindrical base 22 and the outer diameter of the cylindrical leg 23. There is no particular limitation as long as it is set as described above.

  A hexagonal hole is arranged at one end of the cylindrical base portion 22 as a rotated operation portion 24 for rotating the eccentric pin 21.

  The eccentric pin 21 in which the cylindrical base portion 22 is disposed in the outer frame holes 18 a to 18 c and the cylindrical leg portion 23 is disposed in the inner frame holes 17 a to 17 c cooperates with the adjustment frame 11 by rotating. The inclination angle of the inner frame 15 with respect to the outer frame 16 is adjusted, and the angle around the optical axis is adjusted by sliding in the outer frame holes 18a to 18c, and the outer frame 16 and the inner frame 15 are fixed.

  This prism binocular 1 has an eccentric pin 21 as the fixing member 12, but after adjusting the inclination angle of the inner frame 15 relative to the outer frame 16 and the angle around the optical axis, the outer frame 16 and the inner frame 15 In order to strengthen the fixed state, in addition to the eccentric pin 21, an adhesive filling portion (not shown in FIGS. 1 to 4) filled and hardened in the gap between the outer frame holes 18a to 18c and the eccentric pin 21 is provided. You may have.

  An optical component adjusting method according to the present invention and an optical apparatus manufacturing method according to the present invention will be described by taking an optical axis adjusting method in the prism binoculars 1 and a prism binoculars 1 manufacturing method as examples.

  In order to manufacture the prism binoculars 1, first, the first lens barrel 3, the second lens barrel 4, the rotation support 5, the focus ring 6, the transmission mechanism component 6 a, the objective lens group 7, the prism 8 and the eyepiece lens group 9 are assembled. Each is produced by a conventionally known material and method. At this time, since the second lens 7b can be adjusted in the prism binoculars 1, components such as the optical components of the objective lens group 7, the prism 8 and the eyepiece lens group 9, the transmission mechanism component 6a, particularly the objective lens group 7 and the transmission mechanism component. 6a does not have to have extremely high shape accuracy and dimensional accuracy, can accept a relatively large error than the components used in the conventional prism binoculars 1, can avoid the complexity of the manufacturing technique, and can be manufactured at a low cost. Can be reduced.

  In addition, the inner frame 15 and the outer frame 16 are made of a material such as resin or metal, and the eccentric pin 21 is made of resin, preferably metal. Since the prism binoculars 1 can adjust the second lens 7b as described above, the inner frame 15, the outer frame 16, and the eccentric pin 21 have extremely high shape accuracy and dimensional accuracy as in the case of the optical component and component. It does not have to be. The shapes and dimensions of the inner frame 15, the outer frame 16, and the eccentric pin 21 are as described above.

  In the manufacturing method of the prism binoculars 1, the manufactured optical component and component are then placed in the first lens barrel 3. Specifically, a step of arranging optical components including the objective lens group 7, the prism 8, and the eyepiece lens group 9 in the first lens barrel 3 at a distance from the object side is performed. In carrying out this step, first, the adjustment frame 11 is assembled. Specifically, after the second lens 7b is held internally on the inner frame 15, the outer frame 16 is externally mounted on the inner frame 15, and the inner frame hole 17a to the inner frame 15 are communicated by relatively rotating the inner frame 15 and the outer frame 16. Eccentric pins 21a to 21c are inserted into the respective groups of 17c and outer frame holes 18a to 18c. In this way, the adjustment frame 11 in which the inner frame 15 and the outer frame 16 are held in the loosely inserted state by the eccentric pin 21 can be assembled.

  Next, in the method for manufacturing the prism binoculars 1, the first lens 7 a, the adjustment frame 11, the prism 8, and the objective lens group 9 of the objective lens group 7 are arranged in the first lens barrel 3. The adjustment frame 11 is basically the same as the second lens in the conventional prism binoculars except that the lens frame holding the second lens 7b has a double structure of the inner frame 15 and the outer frame 16. It is arranged in the lens barrel 3. Specifically, the adjustment frame 11 is arranged inside the first lens barrel 3 in a state where the outer frame 16 is connected to the transmission mechanism component 6a arranged in the support portion 3b. The first lens 7a, the prism 8 and the eyepiece lens group 9 are arranged in the first lens barrel 3 in the same manner as conventional prism binoculars.

  In this way, the optical components are arranged on the first lens barrel 3 and the second lens barrel 4, and are rotatably supported by the rotation support member 5 so that the first lens barrel 3 and the second lens barrel 4 are parallel to each other. .

  Next, in the method for manufacturing the prism binoculars 1, a step of confirming the optical performance of the prism binoculars 1 is performed. The optical performance to be confirmed is that the optical axes of the respective barrels 3 and 4 are coincident with each other, the two optical axes are parallel to each other, and the like.

  If the optical axes are not coincident and / or the two optical axes are not parallel in this confirmation step, a step of adjusting the second lens 7b in the optical component, prism binoculars 1 is performed. That is, the adjusting step is a step of adjusting the arrangement state of the second lens 7b that is internally held by the inner frame 15 with the outer frame 16 mounted on the exterior. One of the arrangement states adjusted in this step is the inclination of the second lens 7b with respect to a plane perpendicular to the optical axis, that is, the inclination of the inner frame 15 with respect to the outer frame 16, and specifically, is perpendicular to the optical axis. An angle formed by the plane and a plane perpendicular to the axis of the second lens 7b (corresponding to the inclination angle θ shown in FIG. 9), and the two directions of the second lens 7b shown in FIG. 1 with respect to the plane perpendicular to the optical axis This is the degree of inclination of the arrow B in one direction. The other of the arrangement states is an angle around the optical axis of the second lens, specifically, a rotation angle around the optical axis in the cross section shown in FIG. In this adjusting step, at least one of these arrangement states is adjusted. In the adjusting step, the second lens 7b is adjusted by rotating or sliding at least one of the eccentric pins 21a to 21c inserted and arranged in the outer frame holes 18a to 18c and the inner frame holes 17a to 17c. . Specifically, a hexagon wrench or the like inserted from the adjustment hole 3d drilled in the lens barrel body 3a of the first lens barrel 3 is engaged with the rotated operation portion 24 of the eccentric pin 21, and the outer frame holes 18a to 18a. It is slid in the extending direction in 18 c and / or rotated around the axis of the cylindrical base 22.

  When at least one of the eccentric pins 21a to 21c is moved in the extending direction within the outer frame holes 18a to 18c, the angle around the optical axis of the inner frame 15 with respect to the outer frame 16 is set to the extended length of the outer frame holes 18a to 18c. It can be adjusted within the range.

  On the other hand, when at least one of the eccentric pins 21a to 21c is rotated, the inclination of the second lens 7b with respect to a plane perpendicular to the optical axis can be adjusted. For example, when the eccentric pin 21a inserted and arranged in the outer frame hole 18a and the inner frame hole 17a is rotated around the axis of the cylindrical base portion 22, the outer diameter of the cylindrical base portion 22 is the same as the width of the outer frame hole 18a or Since it is slightly smaller, the cylindrical leg portion 23 rotates eccentrically with the axis of the cylindrical base portion 22 as the cylindrical base portion 22 rotates. Then, the inner frame hole 17a in which the cylindrical leg portion 23 is inserted and arranged is indicated by a double-pointed arrow B shown in FIG. 1 along the optical axis with the imaginary line L connecting the inner frame holes 17b and 17c as the center. Go back and forth in one direction. When the vicinity of the inner frame hole 17a of the inner frame 15 is moved back and forth in the optical axis direction in this way, the inner frame 15 is inclined relative to the outer frame 16 by the amount of movement of the inner frame hole 17a, and at the same time, the inner frame The second lens 7b held internally by 15 is also inclined relative to the plane perpendicular to the optical axis together with the inner frame 15. At this time, since the outer frame 16 is disposed and fixed to the first lens barrel 3, the inner frame 15 and the second lens 7 b are inclined with respect to the first lens barrel 3. For example, it is assumed that the binoculars 40 shown in FIG. 9 in which the focus lens 42a is disposed at an inclination angle θ with respect to a plane perpendicular to the optical axis includes the adjustment frame 11 and the fixing member 12 according to the present invention. Similarly, the eccentric pin 21a is rotated in one direction so as to cancel the inclination angle θ, and the inclination θ with respect to the plane perpendicular to the optical axis of the focus lens 42a can be adjusted to 0 °.

  Similarly, when the eccentric pin 21b is rotated, the inclination angles of the inner frame 15 and the second lens 7b can be adjusted around the imaginary line connecting the inner frame holes 17a and 17c. The inclination angle of the inner frame 15 and the second lens 7b can be adjusted around the imaginary line connecting the frame holes 17a and 17b. In this way, the inclination angles of the inner frame 15 and the second lens 7b can be adjusted as desired by rotating at least one of the eccentric pins 21a to 21c. In this specific adjustment step, the eccentric pins 21b and 21c are not simultaneously rotated when the eccentric pin 21a is rotated. However, the second lens 7b can be adjusted even if a plurality of eccentric pins 21 are simultaneously rotated. It is.

  In this way, by rotating or sliding the three eccentric pins 21a to 21c, the inclination with respect to the plane perpendicular to the optical axis of the second lens 7b and / or the angle around the optical axis of the second lens 7b is made as desired. After the adjustment, the method for adjusting an optical component according to the present invention is completed.

  In the manufacturing method of the prism binoculars 1, the arrangement state of the second lens 7 b is also adjusted for the second lens barrel 4 in the same manner as the first lens barrel 3 if desired. In the method for manufacturing the prism binoculars 1, the first lens barrel 3 and the second lens barrel 4 in addition to the optical axes of the first lens barrel 3 and / or the second lens barrel 4 as described above, if desired. The arrangement state of the second lens 7b is adjusted so that the respective optical axes are parallel to each other.

  In the method of manufacturing the prism binoculars 1, the cylindrical leg 23 arranged in the inner frame hole 17a rotates spontaneously because the outer diameter of the cylindrical leg 23 is substantially the same as the diameter of the inner frame hole 17a. The eccentric pin 21a can fix the inner frame 15 to the outer frame 16 in a state where the inclination angle of the second lens 7b is adjusted. Accordingly, the eccentric pins 21a to 21c exhibit a function as a fixing member of the adjustment frame 11 in addition to a function as an adjustment member of the second lens 7b, and can be fixed almost simultaneously with the adjustment of the inner frame 15. That is, in the manufacturing method of the prism binoculars 1, the step of fixing the inner frame 15 and the outer frame 16 with the eccentric pin 21 is performed almost simultaneously with the step of adjusting with the eccentric pin 21.

  By the way, in the manufacturing method of the prism binoculars 1, when the inner frame 15 and the outer frame 16 are firmly fixed, the outer frame holes 18 a to 18 c are adjusted after the step of adjusting the second lens 7 b, that is, the inner frame 15, is performed. A process of fixing the inner frame 15 and the outer frame 16 by filling an adhesive in the gap with the eccentric pin 21 and curing it may be performed, or after the process of adjusting the inner frame 15 is performed, the eccentric pins 21a to 21c. 21c is removed from the outer frame holes 18a to 18c and the inner frame holes 17a to 17c, and the outer frame holes 18a to 18c and the inner frame holes 17a to 17c are filled with an adhesive and cured to form the inner frame 15 and the outer frame 16. The step of fixing may be carried out, and furthermore, after the step of adjusting the inner frame 15 is carried out, the eccentric pins 21a to 21c are removed from the outer frame holes 18a to 18c and the inner frame holes 17a to 17c, and the outer frame hole 18a. -18c and inner frame hole 17 Fasteners for fastening the ～17C, may be performed the step of attaching or fastening the example bolts.

  In the manufacturing method of the prism binoculars 1, the optical component can be obtained by adjusting and fixing the arrangement state of the first lens barrel 3 and / or the second lens 7 b of the second lens barrel 4 of the prism binoculars 1 in this way. The prism binoculars 1 sharing one optical axis in the first lens barrel 3 and / or the second lens barrel 4 and having the optical axes arranged in parallel are manufactured.

  In the prism binoculars 1 manufactured as described above, the lens frame that holds the second lens 7b is constituted by the inner frame 15 and the outer frame 16, and the eccentric pin 21 is disposed inside these lenses. Therefore, the prism binoculars 1 are not complicated or large in structure as compared with the conventional configuration having the second lens 7b and the lens frame, and have a simple and small structure. In particular, the small inner frame 15, outer frame 16, and eccentric pin 21 having a simple shape do not need to be mounted outside the lens barrel as in Patent Document 6, and are housed in a small space inside the lens barrels 3 and 4. it can.

  As described above, since the arrangement of the second lens 7b is adjusted by the inner frame holes 17a to 17c, the outer frame holes 18a and 18c, and the eccentric pins 21a to 21c, the first lens 7a and the second lens 7b are adjusted. Even if there is a dimensional error and a shape error in the lens 7b and the adjustment frame 11 and the like, the optical components arranged in the respective barrels 3 and 4 have one optical axis which is parallel to each other. Therefore, the prism binoculars 1 exhibit high optical characteristics as designed.

  Further, in the prism binoculars 1 provided with the internal focusing objective lens group 7, two lenses constituting the objective lens group 7, that is, the first lens 7a and the second lens 7b are adjusted and arranged and fixed substantially in parallel. Even if the second lens 7b is moved forward and backward, and even if there are dimensional errors and shape errors in the first lens 7a and the second lens 7b and the adjustment frame 11 etc., they are arranged in the respective barrels 3 and 4, respectively. The optical component has one optical axis that is parallel to each other. Therefore, the prism binoculars 1 exhibit high optical characteristics as designed.

  As described above, according to the present invention, it is possible to provide an optical apparatus in which an optical component is arranged in one lens barrel so as to share one optical axis with a small and simple configuration, and a manufacturing method thereof. In addition, according to the present invention, the optical components are arranged in a small and simple configuration so as to share one optical axis in one lens barrel and so that the optical axes of the pair of lens barrels are parallel to each other. Optical devices and manufacturing methods thereof, and optical components arranged in a pair of lens barrels with a small and simple configuration so as to share one optical axis in one lens barrel, and light of the pair of lens barrels The object of providing an adjustment method of an optical component that can be adjusted and arranged so that axes are parallel to each other can be achieved.

  In particular, since the prism binoculars 1 are provided with the eccentric pins 21a to 21c, even if the second lens 7b is moved back and forth many times and the arrangement state of the second lens 7b is changed, as described above, It can be adjusted and high optical properties as designed can be exhibited. That is, according to the present invention having the eccentric pin as one of the fixing members, the optical component is arranged so as to share one optical axis even when the configuration is small and simple, and when necessary, The object of providing an optical apparatus capable of adjusting the arrangement and a method for manufacturing the same can be achieved.

  The optical apparatus according to the present invention is not limited to the above-described embodiments, and various modifications can be made within a range in which the object of the present invention can be achieved.

  For example, the prism binocular 1 is an optical device having two lens barrels 3 and 4, but since the optical device according to the present invention can adjust the arrangement state of the optical components arranged in each lens barrel, one lens barrel May be a monocular such as an astronomical telescope or a ground telescope.

  In the prism binoculars 1, the adjustment frame 11 holds the second lens 7 b internally. However, in this invention, the optical component that the adjustment frame holds internally is not limited to the second lens. For example, the objective lens group, the first lens It may be a lens, a prism, or an eyepiece lens group. In particular, it is composed of a second lens that moves forward and backward at the time of focusing, or usually a plurality of optical components that are easily inclined and can be arranged as desired. It is preferable that the prism is used. In the present invention, the number of optical components held by the adjustment frame is not limited to one, but may be a plurality of, for example, the prism 8 including the roof prism 8a and the auxiliary prism 8b.

  The prism binoculars 1 have a gap between the outer peripheral surface of the inner frame 15 and the inner peripheral surface of the outer frame 16. In the present invention, an elastic member such as rubber is interposed in the gap. Also good. When such an elastic member or the like is interposed in the gap, the inner frame is almost immovably mounted on the outer frame.

  The prism binoculars 1 has three inner frame holes 17a to 17c and outer frame holes 18a to 18c communicating with each of the inner frame 15 and the outer frame 16, but in this invention, the inner frame holes and The outer frame holes are not limited to three sets, and may be one set, two sets, or four sets or more, and are appropriately selected depending on the number of directions for adjusting the inclination of the optical component. For example, the inner frame hole and the outer frame hole communicating with each other may be one set or two sets when the inclination of the optical component is adjusted only in the direction indicated by the double arrow B shown in FIG. When adjusting the inclinations in a plurality of directions including the direction indicated by B, it is sufficient that the number of sets is three or more, but considering the ease of adjustment and the like, the number is preferably three.

  The prism binocular 1 has three inner frame holes 17a to 17c and outer frame holes 18a to 18c that are drilled at equal intervals in the circumferential direction. In the present invention, the inner frame hole and the outer frame hole are The inner frame and the outer frame may be perforated and arranged at different distances in the circumferential direction. For example, when drilling two inner frame holes and two outer frame holes, the center angle may be drilled and arranged at a distance of 180 °, one being less than 180 ° and the other being 180 ° or more. It may be perforated and arranged. In addition, when three inner frame holes and three outer frame holes are drilled, as shown in FIG. 2, they may be drilled and arranged at a distance at which the central angle between adjacent holes is 120 °. It may be perforated and arranged at such a distance that one central angle is 90 °, 90 ° and 180 °. When three inner frame holes and outer frame holes are drilled and arranged at such distances, the inclination of the optical components can be adjusted in the orthogonal direction with the two most distant inner frame holes and outer frame holes. Sexuality is improved.

  In the prism binoculars 1, the three inner frame holes 17a to 17c and the outer frame holes 18a to 18c communicate with each other. However, in the present invention, at least one pair of the inner frame holes and the outer frame holes communicate with each other. The numbers of inner frame holes and outer frame holes that are perforated in the inner frame and the outer frame may not be the same.

  In the prism binoculars 1, the inner frame holes 17 a to 17 c and the outer frame holes 18 a to 18 c that communicate with each other can be adjusted in the arrangement state of the inner frame 15 by circular holes and long holes. It is sufficient that at least one pair of the inner frame hole and the outer frame hole that communicate with each other has a circular hole and a long hole, and the arrangement state of the inner frame can be adjusted. It may not be possible to adjust the arrangement state. For example, the inner frame hole and the outer frame hole that communicate with each other are at least one of the inner frame hole and the outer frame hole that communicate with each other when the inclination of the optical component is adjusted only in the direction indicated by the double-headed arrow B shown in FIG. It is only necessary that the set is adjustable, and the remaining sets need not be adjustable. Further, when adjusting the inclination in a plurality of directions including the direction indicated by the double arrow B, one set out of at least three sets of the inner frame hole and the outer frame hole communicating with each other may not be adjustable. .

  In the prism binoculars 1, the inner frame holes 17a to 17c are small holes and the outer frame holes 18a to 18c are long holes having a width larger than the diameter of the inner frame holes 17a to 17c. One of the inner frame hole and the outer frame hole may be a circular hole and the other may be a long hole having a width different from the diameter of the circular hole, that is, a small width or a large width. For example, as shown in FIG. 6A, the inner frame hole 17a is a small-diameter circular hole and the outer frame hole 18a is a long hole having a width larger than the diameter of the inner frame hole 17a. As shown in FIG. 6C, the outer frame hole 33a may be a large-diameter circular hole, and the inner frame hole 31a may be a long hole having a width smaller than the diameter of the outer frame hole 33a. Thus, the inner frame hole 31b may be a large-diameter circular hole, and the outer frame hole 33b may be a long hole having a width smaller than the diameter of the inner frame hole 31b. Further, as shown in FIG. The outer frame hole 33c may be a small-diameter circular hole, and the inner frame hole 31c may be a long hole having a width larger than the diameter of the outer frame hole 33c.

  In the present invention, the shape and the insertion direction of the eccentric pin are selected so as to correspond to the inner frame hole and the outer frame hole. For example, the cylindrical leg portion of the eccentric pin may have a diameter different from the cylindrical base portion, that is, a large diameter or a small diameter so as to correspond to the inner frame hole or the outer frame hole. Specifically, the eccentric pin 21 inserted and disposed in the inner frame hole 17a and the outer frame hole 18a shown in FIG. 6A and the inner frame hole 31a and the outer frame hole 33a shown in FIG. 6B are inserted. As for the eccentric pin 35a to be arranged, the large-diameter cylindrical base portion 22 having the rotated operation portion 24 is arranged in the outer frame holes 18a and 33a, and the inner frame hole 31b and the outer frame hole 33b shown in FIG. The eccentric pin 35b inserted and arranged, and the eccentric pin 35c inserted and arranged in the inner frame hole 31c and the outer frame hole 33c shown in FIG. Arranged in the frame holes 31b and 31c.

  Here, the eccentric pins 35b and 35c shown in FIG. 6 (c) and FIG. 6 (d) may have a rotated operation portion on the end surface of the small-diameter cylindrical leg portion. That is, the eccentric pins 35b and 35c may have the rotated operation portion 24 on both end surfaces thereof. In this case, the eccentric pins 35b and 35c can be rotated from the adjustment hole drilled in the lens barrel. On the other hand, the eccentric pins 35 b and 35 c can be rotated from the inner side of the inner frame 15 without forming the rotated operation portion on the end face of the cylindrical leg portion. A prism binocular using an eccentric pin 35c instead of the eccentric pin 21 is taken as an example, and a method of adjusting the arrangement state of the second lens 7b by rotating or sliding the eccentric pin 35c from the inner side of the inner frame 15 is specifically described. explain. As shown in FIG. 8, the prism binoculars have an inner frame 15 and an outer frame 16 in which adjustment holes 27a and 27b are formed so as to communicate with each other in addition to the inner frame hole 31c and the outer frame hole 33c. In addition, the prism binoculars 1 is basically the same as the prism binoculars 1 except that the eccentric pin 35c is provided. In this prism binoculars, a tool such as a hexagon wrench 28 that engages with the rotated operation unit 24 is inserted into the inner frame 15 and the outer frame 27a and 27b via the adjustment window 3c (see FIG. 5). The eccentric pin 35c for rotating the tip is engaged with the rotated operation portion 24. While maintaining this engaged state, the tool 28 is rotated to rotate the eccentric pin 35c, and / or the tool 28 is slid and moved within the inner frame hole 31c. In this way, it is possible to adjust the arrangement state of the second lens 7b held internally in the inner frame 15. Although not shown in FIG. 8, the second lens 7b is disposed on the rear side of the inner frame hole 31c and the adjustment holes 27a and 27b. When the adjustment holes 27a and 27b are drilled in the inner frame 15 and the outer frame 16 so that the eccentric pins 35b and 35c are rotated from the inner side of the inner frame 15 in this way, an adjustment hole for tool insertion ( The prism binocular 1 corresponds to the adjustment hole 3d.) It is preferable in that the appearance is excellent and the inside of the lens barrel can be sealed.

  The prism binoculars 1 have long holes extending in the direction perpendicular to the optical axis as the outer frame holes 18a to 18c. In the present invention, the long hole as the outer frame hole or the inner frame hole is a light beam. You may extend in the direction which cross | intersects an optical axis diagonally at an angle which exceeds 0 degree and less than 90 degrees with respect to the axis | shaft.

  In this invention, the rotated operation portion provided on the eccentric pin is not limited to a hexagonal hole, and may be, for example, a square hole, a cross groove, a linear groove (slit) or a hexagonal column, a square column that fits a tool, The shape may be easily gripped manually.

  The prism binoculars 1 have eccentric pins 21 a to 21 c that function as adjustment members for adjusting the arrangement state of the second lens 7 b as the fixing member 12. In this invention, the fixing members are an inner frame and an outer frame. May be a member having only a function of fixing the bolt, and examples thereof include a fastener such as a bolt and an adhesive. For example, in FIG. 7, after the step of adjusting the inner frame 15 is performed, the eccentric pins 21 a to 21 c are removed from the outer frame holes 18 a to 18 c and the inner frame holes 17 a to 17 c to remove the outer frame holes 18 a to 18 c and the inner frame holes. Eccentric pins 21a to 21c in which the inner frame 15 and the outer frame 16 are fixed by the adhesive filling portion 19 by performing a process of fixing the inner frame 15 and the outer frame 16 by filling and curing the adhesive 17a to 17c. The prism binoculars 2 that do not have the are shown.

  The prism binoculars 1 includes an adjustment frame 11 having an inner frame 15 and an outer frame 16 for internally holding the second lens 7b. In the present invention, the adjustment frame is disposed on the inner side and on the outer side. The third frame may be provided on the innermost side, the middle, or the outermost side as long as the arrangement state with the frame can be adjusted. For example, you may have the holding frame which hold | maintains an optical component internally, the inner frame which carries out external fitting to the holding frame, and fixes and hold | maintains a holding frame, and the outer frame which is armored by an inner frame.

1, 2 Prism binoculars 3 First lens barrel 3a Lens barrel body 3b Support portion 3c Adjustment window 3d Adjustment hole 4 Second lens barrel 4a Lens barrel body 4b Support portion 4c Adjustment window 5 Rotating support body 6 Focus ring 6a Transmission mechanism component 7 Objective lens group 7a First lens 7b Second lens (focus lens)
8 Prism 8a roof prism 8b auxiliary prism 9 eyepiece lens group 11 adjustment frame 12 fixing member 15 inner frame 16 outer frames 17a, 17b, 17c, 31a, 31b, 31c inner frame holes 18a, 18b, 18c, 33a, 33b, 33c outer frame Hole 19 Adhesive filling part 21, 21a, 21b, 21c, 35a, 35b, 35c Eccentric pin 22 Cylindrical base 23 Cylindrical leg 24 Rotated operation part 27a, 27b Adjusting hole 28 Tool 40 Binoculars 41 Lens tube 42 Objective lens Group 42a Focus lens 43 Prism 44 Eyepiece group

Claims (11)

An optical apparatus including optical components including an objective lens group, a prism, and an eyepiece lens group arranged at a distance from each other on the object side,
The optical components and interior holding at least one inner frame having at least one inner frame holes on the circumferential surface, and, to interior of the inner frame has an outer frame hole on a peripheral surface that communicates with the frame hole At least one set of the inner frame hole and the outer frame hole, which has an outer frame and communicates with each other, extends in a direction intersecting the axis of the lens barrel with one having a circular hole and the other having a width different from the diameter of the circular hole. An adjustment frame that is a long hole,
And a fixing member for fixing the said outer frame and said inner frame,
The fixing member is disposed in the elongated hole and has a cylindrical base portion having a rotated operation portion at one end, and has a diameter different from that of the cylindrical base portion and extends from the other end of the cylindrical base portion in the axial direction of the cylindrical base portion. An optical device comprising an eccentric pin having a cylindrical leg extending along the cylindrical hole and extending in an eccentric manner with respect to the cylindrical base . The optical device according to claim 1, wherein the fixing member includes a cured product of an adhesive or a fastener. Is the inner frame hole and the outer frame hole communicate with each other, according to claim 1 or 2, characterized in that it is arranged two sets or three sets at a distance in the circumferential direction of the inner frame and the outer frame Optical equipment. The optical apparatus according to claim 3 , wherein at least one of the distances is different from the remaining distance. All set of optical apparatus according to the deviation of claims 1-4 which is one of the other in the circular hole of the long hole of the inner frame hole and the outer frame hole communicate with each other. The optical component, the prism or the optical apparatus according to any one of claims 1 to 5, which is a focus lens constituting the objective lens group to be furnished retained in the frame. The adjustment frame according to any one of claims 1 to 6 , out of optical components including an objective lens group, a prism, and an eyepiece lens group arranged at a distance from each other in the lens barrel of the optical device. The arrangement state of the optical component held internally is adjusted by rotating the eccentric pin according to any one of claims 1 to 6 , which is inserted and arranged in the outer frame hole and in the inner frame hole. A method for adjusting an optical component, comprising the step of: The process simultaneously with or subsequent to the adjustment, in claim 7, characterized in that it comprises a step of fixing the said outer frame and said inner frame by the fixing member according to any one of claims 1 to 6 The adjustment method of the optical component of description. Placing optical components including an objective lens group, a prism, and an eyepiece lens group in a lens barrel of an optical device at a distance from the object side;
The optical component according to claim 7 or 8 , wherein, after the step of arranging, the arrangement state of the optical component that is internally held by the adjustment frame according to any one of claims 1 to 6 among the optical components. And a method of adjusting by an adjustment method. The process simultaneously with or subsequent to the adjusting, to claim 9, characterized in that it comprises a step of fixing the said outer frame and said inner frame by the fixing member according to any one of claims 1 to 6 The manufacturing method of the optical apparatus of description. The method of manufacturing an optical apparatus according to claim 9 , further comprising a step of removing the eccentric pin after the adjusting step.

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