JPH10104496A - Binoculars - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide binoculars whose optical axes can be adjusted without being disassembled. SOLUTION: Screws 103 for fixing a prism holder 64 and through holes 101 into which the screws are inserted are so formed that the through holes 101 are larger than the screws 103 and while it is made possible to adjust the positions of the screws 103 in the through holes 101 within a specific range, a decoration tube 68 and eye pad rubber 68a are detached to enable the screws 103 to be operated from outside through the gap between the external case and lens barrel 66 of the binoculars.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to binoculars.

[0002]

2. Description of the Related Art At the time of shipping inspection of binoculars, a deviation of an optical axis due to a mounting position error of each optical component or the like may be found. Conventionally, when a deviation of the optical axis is found, the above-mentioned deviation of the optical axis is corrected by disassembling the binoculars once and adjusting a mounting position of a predetermined lens.

[0003]

However, in recent years,
In order to improve work efficiency, binoculars that can adjust the optical axis without disassembling the binoculars are desired.

[0004] In view of the above circumstances, it is an object of the present invention to provide binoculars capable of adjusting the optical axis without disassembling the binoculars.

[0005]

In order to achieve the above object, the binoculars of the present invention adjust the position of the erecting optical system in a plane orthogonal to the optical axis of the optical system from outside the binoculars. It is configured to be able to do so. With this configuration, it is possible to adjust the optical axis without disassembling the binoculars.

Further, in the binoculars of the present invention, the erecting optical system is held by a holding member, the holding member is supported by a supporting member, and the holding member is attached to the supporting member in a plane perpendicular to the optical axis. By adjusting the position, a configuration in which the position of the erecting optical system in a plane orthogonal to the optical axis is adjusted is also possible. With this configuration,
With a simpler configuration, the position of the erecting optical system in a plane perpendicular to the optical axis can be adjusted.

In addition, a wall portion perpendicular to the optical axis is provided on the support member, a screw hole is formed on a surface of the holding member facing the wall portion, and a screw is passed through a through hole formed in the wall portion. By screwing into the screw hole, the holding member is configured to be fixed to the support member, and by making the through hole larger by a predetermined amount than the screw, the movement of the screw in the through hole can be adjusted. . With this configuration, the position of the erecting optical system can be easily adjusted by adjusting the position of the screw in the through hole.

The above-mentioned screw is rotatable from either the objective side or the eyepiece side of the binoculars, and the screw is hidden by an exterior member (for example, a rubber band or a decorative ring) provided detachably on the binoculars. You can also. With such a configuration, the screw does not normally appear outside the binoculars, so that the external shape is not complicated.

[0009]

Embodiments of the present invention will be described below. The binoculars of the present embodiment are configured to adjust the interpupillary distance by moving the left and right telescopic optical systems symmetrically with respect to the center in the width direction of the binoculars, regardless of the distance between the two eyepieces. Instead, the operation member for focus adjustment is configured to be located at the center in the width direction of the binoculars. The details will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the binoculars 1 of the present embodiment. The binoculars 1 include a pair of left and right mirrors (casings) 21 that can move symmetrically with respect to the widthwise center of the binoculars.
22 and a support frame 25 for supporting both mirror bodies are provided.

FIG. 2 is a diagram showing an optical system of the binoculars 1. The binoculars 1 are so-called roof prism type binoculars in which an eyepiece and an objective lens are arranged on the same straight line. As shown in FIG. 2, left and right mirrors 21 and 22 of the binoculars 1
2 houses a pair of left and right telephoto optical systems 10L and 10R. Each of the telephoto optical systems 10L and 10R is provided with a first lens 1 along an incident optical axis OAL and OAR indicated by a chain line
1L, 11R, auxiliary prisms 12L, 12R, roof prisms 13L, 13R, and second lenses 14L, 14R,
It consists of eyepieces 15L and 15R.

The first lenses 11L and 11R and the second lenses 14L and 14R each form an objective optical system, and a field frame 16 is formed at a position where an image is formed by the objective optical system.
L, 16R are provided. The image formed by the objective optical system is enlarged by the eyepieces 15L and 15R,
To be observed.

Next, a pair of right and left mirror bodies 21 and 2 shown in FIG.
A configuration for enabling the lens 2 to move symmetrically with respect to the center in the width direction of the binoculars will be described. In the following description, the objective side (the side closer to the subject) of the binoculars is called the front, and the eyepiece side (the side closer to the observer) is called the rear. The direction parallel to the optical axes OAL and OAR in FIG. 2 is simply referred to as “optical axis direction”.

FIG. 3 is an exploded perspective view showing the frame structure of the binoculars 1. The support frame 25 (FIG. 1) for movably supporting the pair of left and right mirror bodies 21 and 22 includes a bottom plate 41 and a top plate 42, which are two parallel plate members, and a bottom plate 41.
A horizontal H-shaped frame is formed by a central support 45 provided between the camera and the top plate 42 and serving as a column in the height direction of the binoculars.

Left and right telephoto optical systems 10L, 10R (FIG. 2)
Each lens and prism (in FIG. 3, the optical axes OAL and O
AR) are supported by a pair of left and right slide frames 31 and 32 movably provided in the width direction of the binoculars between the bottom plate 41 and the top plate 42. Further, a pair of left and right exterior cases 51 and 52, which are parts gripped by the observer, are fixed to the slide frames 31 and 32. The left and right slide frames 31, 32 and the outer cases 51, 52
Constitute the mirror bodies 21 and 22 of FIG.

FIG. 4 shows left and right slide frames 31 and 3.
FIG. 2 is a perspective view showing a bottom plate 41 supporting two slide frames. The slide frames 31 and 32 are a pair of left and right plate-like members having openings 312 and 322 formed in the center, respectively. The ends of the slide frames 31 and 32 corresponding to the left and right ends of the binoculars, respectively, are bent vertically upward to form side walls 311 and 321.

At the front end and the rear end of the slide frame 31, a pair of upright portions 313 and 314 that stand upright in the vertical direction are formed at a predetermined distance from the side wall portion 311. The left telephoto optical system 10L (FIG. 2) is held between the side wall portion 311 and the upright portions 313 and 314. Similarly,
Upright portions 323, 324 are formed at the front end and the rear end of the holding portion 320 of the slide frame 32, and between the side wall portion 321 and the upright portions 323, 324, the right telephoto optical system 10R.
(FIG. 2) is retained.

The upright portions 313 of the slide frame 31,
A guide shaft 315 extending in the front-rear direction is stretched between the 314 and the both upright portions 323 and 32 of the slide frame 32.
4, a guide shaft 325 extending in the front-rear direction is stretched. The two guide shafts 315 and 325 provide guidance when the eyepiece optical system and the prism are moved in the front-rear direction (details will be described later).

Guide grooves 310a, 310b extending in the width direction of the binoculars are provided near the front end and the rear end of the slide frame 31.
Are formed respectively. Similarly, slide frame 32
Guide grooves 320a and 320b extending in the width direction of the binoculars are formed near the front end and the rear end, respectively.

At the four corners of the bottom plate 41, four pins 413,
414, 415, 416 are implanted, and engage with the guide grooves 310a, 310b of the slide frame 31 and the guide grooves 320a, 320b of the slide frame 32, respectively. Guide grooves 310a, 310b, 320a, 320b and pins 41
By the engagement with 3,414,415,416, the position of the slide frames 31,32 is restricted on the bottom plate 41 so as to be movable only in the binoculars width direction.

From the right end of the slide frame 31, a pair of extending portions 331,
332 extends from the left end of the slide frame 32 toward the slide frame 31.
1,342 extend. Engaging grooves 333 and 334 extending in the width direction of the binoculars are respectively formed in the extending portions 331 and 332, and similarly, the engaging grooves 34 and 334 are formed in the extending portions 341 and 342.
3,344 are respectively formed.

FIG. 5 shows a state where the slide frames 31 and 32 are attached to the bottom plate 41. Slide frame 3
When the slide frames 1 and 32 are attached to the bottom plate 41, the extension portions 331 and 332 of the slide frame 31 and the extension portions 341 and 342 of the slide frame 32 are disposed so as to overlap with the slide frame 32 side facing up.

A pin 411 planted at the center of the bottom plate 41 in the width direction of the binoculars is engaged with the engagement groove 333 of the slide frame 31 and the engagement groove 343 of the slide frame 32. And slide frame 3
A pin 412 planted at the center of the bottom plate 41 in the width direction of the binoculars is engaged with the second engagement groove 344. Pins 411, 4
12 and the respective engagement grooves, the slide frame 31,
32 is guided in the width direction of the binoculars.

The center support 45 is disposed at the center in the width direction of the bottom plate 41 so as to straddle the respective extending portions of the slide frames 31 and 32. Racks 335 and 345 are formed on the extension 331 of the slide frame 31 and the extension 342 of the slide frame 32 so as to face each other.
Is engaged with a pinion 36 provided at a lower portion of the first member.

As shown in FIG. 3, upper end surfaces 313a, 313a of upright portions 313, 314 of slide frame 31 are provided.
4a and upright portions 323, 32 of the slide frame 32
The upper end surfaces 323a and 324a of the 4 are abutting surfaces that abut on the lower surface of the top plate 42. As described above, the positions of the slide frames 31 and 32 are regulated in the vertical direction by the bottom plate 41 and the top plate 42. Thus, the slide frame 31,
32 is slidably supported in the width direction of the binoculars by a horizontal H-shaped support frame 25 including a bottom plate 41, a top plate 42, and a central support 45.

FIG. 6 is a plan view showing the sliding state of the slide frames 31, 32 on the bottom plate 41. The slide frames 31 and 32 include the pins 413, 414, 415 and 416 implanted in the bottom plate 41 and the guide grooves 310 a and
The engagement with 310b, 320a, 320b enables sliding only in the binoculars width direction. Further, the pinion 36 is connected to the rack 33 of the slide frames 31 and 32.
5 and 345, the slide frames 31 and 32 can move by the same amount in opposite directions, as shown in FIGS. 6 (a) and 6 (b).

Next, the mounting structure of the slide frame and the outer case will be described. FIG. 7 is a perspective view showing an attachment structure of the right slide frame 32 and the outer case 52. In FIG. 7, the bottom plate 41 and the top plate 42 (FIG. 3) located above and below the slide frame 32 are omitted.

The outer case 52 is formed in a box shape opened inside the binoculars in the width direction. A vertical wall 521 is formed at the front end of the outer case 52, and the first lens 11 of the objective optical system is formed.
An opening 522 for guiding incident light to R (FIG. 2) is formed. On the other hand, the entire rear end of the outer case 52 is an opening, and an outer edge 523 for attaching the rear end cover 529 is formed on the inner periphery of the opening in the binoculars width direction.

A pair of upright portions 32 of the slide frame 32
3, 324, a contact portion 346 that protrudes horizontally forward and contacts the wall 521 of the outer case 52 is formed in the front standing portion 323. The rear upright portion 324 is bent rearward, and upper and lower ends of the bent portion serve as contact portions 347 that contact the outer edge portion 523 of the outer case 52.

Further, a screw hole 348 is formed in the upright portion 323, and a through hole 524 is formed in a predetermined position of the exterior case 52 corresponding to the screw hole 348. Further, a screw hole 324a is formed in the upright portion 324, and the outer case 5
A through-hole 526 is formed at a position corresponding to the screw hole 324a in the rear end cover 529 that is fitted into the outer edge portion 523 of the second. A screw hole 349 is formed at a predetermined position of the side wall portion 321, and a through hole 525 is formed at a predetermined position of the exterior case 52 corresponding to the screw hole 347.

As described above, the slide frame 32 and the outer case 52 are in contact with the contact portions 346 and 347 and the wall 521 and the outer edge portion 523, and the screw holes 348, 324a,
It is fixed by tightening a screw to the 349. That is, the bottom plate 41 and the top plate 4 are located above and below the slide frame 32.
2, the slide frame 32 and the outer case 52 are fixed at locations other than the top and bottom of the slide frame 32, that is, at the front and rear ends and side ends. In addition, the left mirror body 21 and the slide frame 31 are fixed similarly.

With the above-described configuration, the right and left mirror bodies 21 and 22 formed by the slide frames 31 and 32 and the outer cases 51 and 52 are supported by the horizontal H-shaped support frame 25. As shown in the schematic cross-sectional views of FIGS.

In the binoculars of the present embodiment, the left and right mirror bodies (casings) 21 and 22 composed of the slide frames 31 and 32 and the outer cases 51 and 52 constitute boxes (shells), respectively. Is obtained. In order to further increase the rigidity of the left and right mirror bodies 21 and 22, the slide frames 31 and 32 and the outer cases 51 and 52 are made of metal.

The left and right mirrors 21 and 22 are connected to the bottom plate 41.
As shown in FIG. 8B, the binoculars are supported even when the distance between the left and right mirror bodies 21 and 22 is widened as shown in FIG. 1 The overall rigidity is maintained. In order to further increase the rigidity of the entire binoculars 1, the bottom plate 41 and the top plate 42 are made of metal.

Next, a configuration for holding the optical system in the left and right mirrors will be described. The binoculars of the present embodiment include an eyepiece 15 from the auxiliary prisms 12L and 12R of the left and right telephoto optical systems 10L and 10R shown in FIG.
The units up to L and 15R are left and right movable units (moving units 6a and 6b), and the units are moved along the optical axes OAL and OAR so as to perform storage / projection of the eyepiece and focus adjustment. It is configured.

FIG. 9 is a perspective view showing the right moving unit 6b. As shown in FIG. 9, the slide frame 32 is provided with a moving unit 6b that holds each prism and lens and that can move along the optical axis. The left moving unit 6a (omitted in FIG. 9) is configured symmetrically with the right moving unit 6b with respect to the center in the width direction of the binoculars. A first lens frame 19 for holding the first lens 11R of the objective optical system is supported in front of the slide frame 32 so as to be movable in the optical axis direction for adjusting diopter difference. Description is omitted.

The right moving unit 6b includes a prism holder 64 for holding a prism (to be described later), a lens barrel 66 for holding a lens group (to be described later), and a moving body 62 for supporting these. A makeup ring 68, which is an exterior member of the eyepiece, is attached to the tip of the lens barrel 66, and an eyepiece rubber 68a is provided at the tip of the makeup ring 68.

FIG. 10 is an exploded perspective view showing the moving unit 6b. As shown in FIG. 10, the moving body 62 includes a base plate 62a on which the prism holder 64 is mounted and a base plate 6
2a, two vertical walls 62b provided at the rear end and the left end,
62c. The two vertical walls 62b, 62c form an L-shaped frame in plan view, and a lens barrel 66 is attached to the vertical wall 62b from behind.

In order to fix the lens barrel 66 to the movable body 62, the lens barrel 66 is formed with a flange 110 attached to the vertical wall 62b of the movable body 62. A screw hole 102 is formed in the vertical wall 62b to screw the flange 110 to the moving body 62.
Is formed with a through hole 111. By fixing the screw 112 to the screw hole 102 through the through hole 111,
The lens barrel 66 is fixed to the moving body 62.

In order to fix the prism holder 64 to the moving body 62, a screw hole 104 is formed in the rear end face 645 of the prism holder 64, and a through hole 101 is formed in the vertical wall 62b of the moving body 62. . By fixing the screw 103 to the screw hole 104 via the through hole 101, the prism holder 64 is fixed to the moving body 62.

The prism holder 64 is moved to the moving body 62.
A small projection 646 protrudes from the rear end surface 645 of the prism holder 64 to roughly position the prism holder 64. The small protrusion 646 is fitted into a concave portion 629 (FIG. 11) formed in the vertical wall 62b of the moving body 62, and thereby, the prism holder 64 is roughly positioned with respect to the moving body 62.

As shown in FIG. 10, in order to attach the makeup tube 68 to the lens barrel 66 with one touch, the lens barrel 6
A protrusion 114 is provided on the outer circumference of the tube 6, and a clamp 115 for clamping the protrusion 114 is provided at a front end of the decorative tube 68. The clamp portion 115 has a U-shaped groove extending in the front-rear direction and opening at the front end, and the U-shaped groove is configured to engage with the protrusion 114. Therefore, the makeup tube 68 is
When pulled backward, it is detached from the lens barrel 66, and when pushed forward, it is attached to the lens barrel 66.

Further, an engagement groove 116 for mounting the eye rubber 68a is provided on the outer periphery near the rear end of the lens barrel 66.
Are formed. An engaging portion 117 that engages with the signal groove 116 is formed in the opening of the eye rubber 68a.
Since the target rubber 68a is formed of a relatively soft rubber, the target rubber 68a can be attached to the lens barrel 66 by fitting the engaging portion 117 into the engaging groove 116.

The vertical wall 62c is formed with insertion holes 621 and 622 for inserting the guide shaft 325 (FIG. 9) of the slide frame 32, and the right end of the vertical wall 62b has a side wall 321 of the slide frame 32. Is provided with an abutting portion 623 that contacts from above. Therefore, as shown in FIG. 9, the moving body 62 is supported by the slide frame 32 so as to be movable in the front-rear direction.

FIG. 11 is a perspective view showing a structure for holding the prism. As shown in FIG. 11, the prism holder 64 is formed in a box shape with an open front end.
Inside the auxiliary prism 12R and the roof prism 13
R is attached. Auxiliary prism 12R and roof prism 1
The 3R is fixed to the prism holder 64 by pouring an adhesive into adhesive openings 642 formed at several places in the prism holder 64.

Note that first and second light shielding plates 641 and 643 for preventing stray light are attached between the auxiliary prism 12R and the roof prism 13R and at the front end of the prism holder 64. The first and second light-shielding plates 641 and 643 each have an opening at the center (the opening of the first light-shielding plate 641 is not shown), and block stray light around the opening.

FIG. 12 is a perspective view showing a structure for holding a lens group. A second lens 14R, a field frame 16R, and an eyepiece 15R are mounted on the lens barrel 66 from the front to the rear. The second lens 14R is held by the second lens frame 120 (details will be described later). By attaching the second lens frame 120 to the lens barrel 66 (details will be described later), the eyepiece 15R and the field frame 16
R is sandwiched between the lens barrel 66 and the second lens frame 120 and its position is regulated.

The binoculars of the embodiment are configured so that the deviation of the optical axis can be adjusted by finely adjusting the angle of the prism from outside the binoculars. That is, in FIG. 10, the diameter of the through hole 101 provided in the moving body 62 for fixing the prism holder 64 to the moving body 62 is configured to be larger by a predetermined amount than the threaded portion of the screw 103.
01 is configured so that the position of the screw 103 can be adjusted within a predetermined range.

By adjusting the position of the screw 103 in the through hole 101, the mounting angle of the prism holder 64 in the vertical plane (that is, in the plane perpendicular to the optical axis) can be finely adjusted. Fine adjustment of the mounting angle of the prism holder 64 changes the angles of the auxiliary prism 12R and the roof prism 13R (FIG. 11) around the optical axis, thereby making it possible to adjust the deviation of the optical axis.

Since the prism holder 64 is screwed at two positions on the diagonal line of the rear end surface 645, a wider range of adjustment is possible by adjusting the position of the screw 103 at the two positions.

Here, in order to enable the screw 103 to be operated by a tool such as a screwdriver, a through hole 113 through which the tool is inserted is formed in the flange 110 located behind the screw 103. The outer diameter of the through hole 113 is formed smaller than the outer diameter of the head of the screw 103.

A recess 628 is formed around the through hole 101 on the rear end surface of the vertical wall 62b.
The head of the screw 103 is accommodated between the flange 103 and the flange 110. Further, the length of the screw portion of the screw 103 is set such that the screw portion does not come out of the screw hole 104 even when the screw 103 is loosened until its head comes into contact with the flange portion 110. That is, the flange portion 110 functions as a stopper so that the screw 103 does not fall out even if the screw 103 is excessively loosened.

FIG. 13 is a perspective view showing the internal structure of the binoculars, and FIG. 14 is a front view showing the eyepiece of the binoculars. As shown in FIGS. 13 and 14, when the cosmetic tube 68 and the eyepiece rubber 68a are removed, the screw 103 can be operated from the outside via the gap between the exterior 52 of the binoculars 1 and the lens barrel 66.

As described above, according to the binoculars 1 of the present embodiment, it is possible to finely adjust the mounting angle of the prism holder 64 in the vertical plane from the outside of the binoculars 1 simply by removing the cosmetic tube 68 and the eyepiece rubber 68a. it can. This makes it possible to finely adjust the angle of each prism around the optical axis and adjust the deviation of the optical axis.

As shown in FIG. 13, the binoculars of this embodiment are configured so that the prism holder 64 can be easily replaced simply by removing the outer case and the top plate 42 (omitted in FIG. 13). As shown in FIG. 10, the prism holder 64 is fixed to the moving body 62 only at the rear end surface 645. Then, as shown in FIG. 14, the rear end face 645 is used to attach the prism holder 64 to the moving body 62.
The screw 112 fixed to the rubber tube 6 includes
If 8a (FIG. 13) is removed, it can be operated from outside the binoculars 1.

Accordingly, as shown in FIG. 13, the outer case 52 and the top plate 42 located above the prism holder 64 are provided.
If (not shown in FIG. 13) is removed, the cosmetic tube 68 and the target rubber 68a are removed, and the screw 112 is loosened, the prism holder 64 can be pulled out upward as it is. That is, the prism holder 64 can be easily removed.

Next, the lens barrel 66 and the second lens frame 12
The mounting structure of No. 0 will be described. FIG. 15 is a perspective view showing the lens barrel 66 and the second lens frame 120. An engagement protrusion 125 for fixing is formed on the upper surface of the second lens frame 120, and the engagement protrusion 125 is provided on the rear end of the lens barrel 55.
Are provided.

FIG. 16 shows the engagement protrusion 125 and the arm 13.
It is a top view which shows 1,132. The engagement protrusion 125 has a hexagonal shape in plan view, and has two opposing sides (125a, 125a).
b) is a block facing the front and rear, and has a U-shaped groove 126 extending in the front-rear direction and opening at the rear end. The angle formed between the pair of inclined ends 127 sandwiching the front end 125a of the engaging projection 125 and the front-rear direction is 45 °, and the angle formed between the pair of inclined ends 128 sandwiching the rear end 125b and the front-rear direction is 45 °.
Less than °.

On the other hand, the arm portions 131 and 132
It is formed in a U-shape, and is disposed on the left and right so that the openings of the U-shape face each other. One ends (rear ends) of the U-shaped arms 131 and 132 are fixed ends fixed to the lens barrel 66, and the other ends (front ends) of the U-shaped are configured as free ends 133 and 134. In addition, the free ends 133 and 134 are formed of curved surfaces.

When the second lens frame 120 (FIG. 15) is pushed into the lens barrel 66, the inclined end 1 of the engagement projection 125
28 are free ends 133 and 134 of the arm portions 131 and 132
In sliding contact with Due to the inclination of the inclined end 128, both arm portions 1
31 and 132 are elastically deformed, and the interval gradually widens. The inclined end 128 has a gentle inclination, and the free ends 133, 13
Since 4 is a curved surface, the sliding contact between the two is performed smoothly.

The second lens frame 120 (FIG. 15) is further pushed into the lens barrel 66, and the arms 131, 13
When the two free ends 133, 134 reach the inclined end 127,
The arms 131 and 132 move in a direction to reduce the distance between the two arms by their own elastic restoring force. As a result, the inclined end 127 of the engagement protrusion 125 is pressed rearward, and FIG.
As shown in (b), the engagement protrusion 125 is
1,132.

With this configuration, the engaging projection 125 can be pushed between the arm portions 131 and 132 with a small force. That is, the second lens frame 120 (FIG. 15)
Can be attached to the lens barrel 66 with a light force.
Further, even when the position of the engagement protrusion 125 is shifted due to the dimensional tolerance of the engagement protrusion 125 (or the accumulation of the dimensional tolerance of other parts), the arms 131 and 132 press and hold the same with a substantially constant force. .

The jig for removal is engaged with the U-shaped groove 126 of the engagement projection 125, and the second lens frame 120 (FIG. 1)
By pulling 5) forward, the arm portions 131, 132 are pushed by the inclined ends 127, 127 and are spread out, and the second
The lens frame 120 (FIG. 15) can be easily removed from the lens barrel 66.

Next, the mounting structure of the second lens 14R and the second lens frame 120 will be described. FIG. 17 is a perspective view showing the second lens 14R and the second lens frame 120. A pair of engaging projections 14 is provided on both side ends of the second lens 14R.
1 is protruded, and on both front ends of the second lens frame 120,
A pair of grip portions 121 for gripping the projection 141
Is provided.

FIG. 18 shows the engagement projection 141 and the grip 1
It is a side view which shows the engagement state of 21. Each grip part 12
1 is a J-shaped arm 122 that projects horizontally forward,
It consists of 122. The arm parts 122, 122
The short sides of the letter are arranged so as to face each other, the long sides of the letter J are fixed to the second lens frame 120, and the ends of the short sides of the letter J are free ends 123, 123.

On the other hand, the engagement projection 141 is a substantially rectangular shape when viewed from the side, and is a block in which two opposing sides face forward and backward. Two corners 143 and 143 sandwiching the rear end 142 of the engagement protrusion 141 have a predetermined curvature.

When the second lens 14R is pushed into the second lens frame 120 in the direction of the arrow in FIG.
2 and the engagement protrusion 141 are in sliding contact. Arm parts 122 and 12
In FIG. 2, a predetermined inclination is provided at a position where it first comes into sliding contact with the engagement protrusion 141, and as the second lens 14R is pushed in, the two arms 122, 122 are elastically deformed, and the interval gradually widens.

The second lens 14R is further moved to the second lens frame 1
20, the free ends 1 of both arms 122, 122
23, 123 are corners 143, 1 of the second lens 14R.
When it reaches 43, both arms 122, 122 move in a direction to reduce the distance between both arms by their own elastic restoring force. As a result, the engagement protrusion 141 is pressed rearward.

The peripheral edge 144 at the rear end of the second lens 14R is attached to the abutting portion (not shown) provided inside the second lens frame 120 with the urging force of the arms 122, 122 due to the elastic restoring force. Abut. Thus, the second lens 14
R is held by the second lens frame 120.

In each of the arms 122, 122, the portions of the second lens 14R that come into contact with the corners 143, 143 have a predetermined curvature, and the center positions of the respective curvatures are as shown in FIG. The state shown in FIG. 18B does not match, and the state shown in FIG.

The second lens 14R is connected to the second lens frame 1
When removing from the engagement projection 141, a tool such as a flathead screwdriver is inserted into the gap C between the engagement projection 141 of the second lens 14R and the second lens frame 120.
By urging the lens forward, the second lens 14R can be easily removed.

Next, a configuration for moving the left and right moving bodies 61 and 62 configured as described above in the optical axis direction will be described. FIG. 19 is a sectional view showing the internal configuration of the binoculars 1. Arms 614 and 624 extend from the left and right moving bodies 61 and 62 toward the center of the binoculars in the width direction.
A focus adjustment drive mechanism 70 for driving the arms 614 and 624 in the optical axis direction is provided at the center of the binoculars in the width direction. The focus adjustment drive mechanism 70 is provided with a rotating wheel 71 which is an operating member for focus adjustment, and a driving ring 71a is fixed inside the rotating wheel 71, and a driving ring 71a is provided on an inner surface of the driving ring 71a.
Two projections 76 and 77 are provided.

The projection 7 is provided inside the driving ring 71a.
There is provided a screw 73 having a screw groove which engages with 6,77. At the tip of the screw 73, a slider 74 for guiding the screw 73 in the front-rear direction so as not to rotate around the axis is attached.
4 moves straight. Then, the arms 614 and 624 move back and forth via a lever 75 described later provided on the slider 74 to move the moving bodies 61 and 62.

In the state shown in FIG. 19, the first lens 11
L, 11R and the mobile units 6a, 6b are in the closest state. In this state, the moving units 6a and 6b are housed in the exterior cases 51 and 52 of the binoculars 1 except for the rear ends. FIG. 20 shows a state where the moving units 6a and 6b are farthest from the first lenses 11L and 11R.
In the state shown in FIG. 13, the eyepieces 15a and 15b of the moving units 6a and 6b, the makeup rings 67 and 68, and the eyepiece rubbers 67a and 68a are the outer cases 51 and 52 of the binoculars 1.
From the rear (observer side).

In the binoculars according to the embodiment, as shown in FIG. 19, the moving units 6a and 6b are the first lenses 11L and 11L.
Observation is not possible in the state close to R (storage state). Thus, the moving units 6a and 6b including the eyepiece optical system
Becomes the first lens 1 until the observation becomes impossible (storage state).
Since the binoculars 1 are configured so as to be close to 1L and 11R, the size of the binoculars 1 becomes smaller when not in use.

Next, the lens barrel 66 and the second lens frame 12
Another example of the mounting structure of No. 0 will be described with reference to FIG. As shown in FIG. 21, an engagement protrusion 225 having a shape in which a triangular prism is turned sideways is formed on the upper surface of the second lens frame 120. The engaging projection 225 is formed so that its height becomes higher toward the front.

The lens barrel 66 is provided with an annular locking portion 230 that engages with the engaging projection 225. The annular locking portion 230 is formed in a horizontal substantially M-shape with both ends fixed to the lens barrel 66. Then, the second lens frame 120
Is pushed into the lens barrel 66, the annular locking portion 230 is elastically deformed upward and rides over the engaging projection 225, and the annular locking portion 230 contacts the front end of the engaging projection 225. As shown in FIG. 20B, the second lens frame 120 is held by the lens barrel 66.

Finally, the relationship between the features of the present invention and the embodiment will be described. In FIG. 10, the diameter of the through hole 101 provided in the moving body 62 for fixing the prism holder 64 to the moving body 62 is configured to be larger than the screw portion of the screw 103 by a predetermined amount. Is configured to be adjustable within a predetermined range. By adjusting the position of the screw 103 in the through hole 101, the mounting angle of the prism holder 64 in the vertical plane (that is, in the plane perpendicular to the optical axis) can be finely adjusted. By such fine adjustment of the mounting angle of the prism holder 64, the angles of the auxiliary prism 12R and the roof prism 13R (FIG. 11) around the optical axis change, so that the deviation of the optical axis can be adjusted.

As shown in FIGS. 13 and 14, when the cosmetic tube 68 and the eyepiece rubber 68a are removed, the screw 103 is operated from the outside via the gap between the exterior 52 of the binoculars 1 and the lens barrel 66. It becomes possible. That is, without disassembling the binoculars 1, it is possible to finely adjust the angle of each prism in the prism holder 64 around the optical axis and adjust the deviation of the optical axis.

[0080]

As described above, according to the binoculars of the present invention, by adjusting the position in the plane perpendicular to the optical axis of the erecting optical system from outside the binoculars, the light can be adjusted without disassembling the binoculars. It is possible to adjust the displacement of the shaft.

[Brief description of the drawings]

FIG. 1 is a perspective view of binoculars of the present embodiment.

FIG. 2 is a diagram showing an optical system of the binoculars of FIG.

FIG. 3 is an exploded perspective view of the binoculars of FIG.

FIG. 4 is a perspective view showing a slide frame and a bottom plate.

FIG. 5 is a perspective view showing a state where a slide frame is attached to a bottom plate.

FIG. 6 is a perspective view showing a sliding operation of a slide frame.

FIG. 7 is a perspective view showing a structure for attaching an outer case to a slide frame.

FIG. 8 is a cross-sectional view showing a sliding operation of right and left mirror bodies.

FIG. 9 is a perspective view showing a structure of a moving unit.

FIG. 10 is a perspective view illustrating a structure of a moving unit.

FIG. 11 is a perspective view showing a configuration change for holding a prism.

FIG. 12 is a perspective view showing a configuration transition for holding a lens group.

FIG. 13 is a perspective view showing the internal structure of the binoculars.

FIG. 14 is a front view showing an eyepiece of the binoculars.

FIG. 15 is a perspective view showing an attachment structure of a second lens frame to a lens barrel.

FIG. 16 is a plan view showing an engagement state between an engagement protrusion and an arm.

FIG. 17 is a perspective view showing a structure for attaching a second lens to a second lens frame.

FIG. 18 is a side view showing an engagement state between an engagement protrusion and an arm.

FIG. 19 is a plan view showing the internal structure of the binoculars.

FIG. 20 is a plan view showing the internal structure of the binoculars.

FIG. 21 is a perspective view showing another example of the mounting structure of the second lens frame to the lens barrel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Binoculars 12L, 12R Auxiliary prism 13L, 13R Dach prism 14L, 14R Second lens 15L, 15R Eyepiece 21, 22, Mirror 31, 32 Slide frame 41 Bottom plate 51, 52 Outer case 61, 62 Moving body 64 Prism holder 66 Lens mirror Cylinder 68 Makeup ring 68a Target rubber 101, 111, 113 Through hole 102, 104 Screw hole 103, 112 Screw 110 Flange part 120 Second lens frame 125 Engagement projection 122, 122 Arm part 131, 132 Arm part 141 Engagement projection

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[Procedure amendment]

[Submission date] August 5, 1997

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG. 13

Claims (8)

[Claims] 1. The binoculars characterized in that the position of the erecting optical system in a plane perpendicular to the optical axis of the optical system can be adjusted from outside the binoculars. 2. The erecting optical system is held by a holding member, and the holding member is supported by a supporting member, and a mounting position of the holding member with respect to the supporting member in a plane perpendicular to the optical axis is adjusted. The binoculars according to claim 1, wherein the position of the erecting optical system in a plane perpendicular to the optical axis is adjusted. 3. The binoculars according to claim 2, wherein the mounting angle is adjustable from any one of an objective side and an eyepiece side of the binoculars. 4. The binoculars according to claim 2, wherein the support member and the holding member are fixed on a surface perpendicular to the optical axis. 5. The support member is provided with a wall portion orthogonal to the optical axis, and a screw hole is formed in a surface of the holding member facing the wall portion, and a screw is formed in the through hole formed in the wall portion. By penetrating the hole and screwing into the screw hole, the holding member is configured to be fixed to the support member, and the through hole is formed larger than the screw by a predetermined amount, so that the inside of the through hole is formed. The binoculars according to claim 4, wherein the movement of the screw can be adjusted. 6. The binoculars according to claim 5, wherein the screw is rotatable from one of an objective side and an eyepiece side of the binoculars. 7. The binoculars according to claim 6, wherein the screws are hidden by an exterior member detachably provided on the binoculars. 8. The binocular according to claim 6, wherein the screw is rotatable from the eyepiece side of the binoculars and is concealed by the exterior member provided on the eyepiece side of the binoculars. Binoculars.