JP2003270547A - Adapter for preventing blur for binoculars - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an adapter which can prevent a blur during viewing with binoculars. <P>SOLUTION: The adapter for the binoculars comprises providing a front end face of an oblong flat cylindrical portion enclosing the circumferences of both eyes of a binocular observer and having recessed parts for the nose in the segments corresponding to the nose with an end rail section and forming eyepiece insertion tubes to be inserted with the right and left end eyepiece sections of the binoculars so as to project forward at the end rail section. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an adapter for preventing blurring when observing binoculars.

[0002]

2. Description of the Related Art Binoculars have a pair of left and right independent objective lenses and eyepieces, and at the time of observation, the rear end of an eyepiece tube containing the left and right eyepieces is brought close to the eye (usually Observe by abutting around the eyes). But,
It is difficult for the spectacle wearer to stabilize the binoculars because the spectacle lens or frame is located between the eyes and the rear end of the eyepiece tube. Even a person who does not wear spectacles suffers from pain when the rear end of the eyepiece tube is kept in strong contact with the periphery of the eye, and the periphery of the eye is relatively flexible, so that it is difficult to sufficiently stabilize it. If the binoculars cannot be stabilized with respect to the eyes, image blur occurs and it is difficult to observe. Image blur becomes more problematic with higher magnification binoculars.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an anti-shake adapter which is attached to and detached from binoculars to prevent or suppress image shake during binocular observation.

[0004]

SUMMARY OF THE INVENTION An anti-shake adapter for binoculars according to the present invention surrounds both eyes of a binocular observer and has a horizontally long flat cylindrical portion having a nose recess at a portion corresponding to the nose; A curtain plate part connected to the front end face;
And an eyepiece insertion tube into which the left and right eyepieces of the binoculars are inserted. With this configuration, the binoculars can be held in a stable state with respect to the eye by bringing the rear end of the horizontally long flat tubular portion into contact with the periphery of the orbit, particularly the forehead.

In order to improve the usability of spectacle wearers,
It is desirable to form a storage recess in the laterally elongated flat tubular portion for storing the vine portion of the spectacle wearing observer.

The anti-shake adapter for binoculars of the present invention can be configured to be coupled to the binoculars by the frictional force between the eyepiece tube of the binoculars and the eyepiece insertion tube of the adapter. Means are preferably provided. This coupling means can be composed of, for example, a female screw portion provided coaxially with the interpupillary distance adjusting axis of the binoculars and a male screw rotatably supported by the adapter and screwed into the female screw portion.

The eyepiece insertion tube can be provided with a pair corresponding to the left and right eyepieces of the binoculars. At this time, it is desirable that the pair of eyepiece insertion tubes be formed of non-circular cylinders that are long in the arc direction with the interpupillary adjustment axis of the binoculars as the center.

[0008]

1 to 6 show an embodiment of an anti-shake adapter for binoculars according to the present invention. The binoculars 10 of the present embodiment are of a type in which independent left and right lens frames 11 are supported so as to be openable and closable around an eye width adjusting shaft 12 as shown in FIG. The left and right lens frames 11 respectively support an objective lens, an erecting optical system (prism) and an eyepiece lens, which are not shown, and the eyepiece lens is located in an eyepiece tube 13 that projects rearward. A foldable eyecup 14 is provided at the rear end of the eyepiece tube 13. Reference numeral 15 is a focus ring, and 16 is a diopter adjustment ring. A female screw portion 12a is formed at the rear end portion of the interpupillary distance adjusting shaft 12.

The anti-shake adapter 20 of the present embodiment which is attached to and detached from the binoculars 10 described above has a horizontally long horizontally elongated cylindrical portion 21 surrounding the eyes of the binocular observer, and a front end of the horizontally elongated flat cylindrical portion 21. The curtain plate portion 22 connected to the surface, the eyepiece insertion tube 23 formed by projecting to the front on the left and right sides of the curtain board portion 22, and the projections between the left and right eyepiece insertion tube tubes 23. And a coupling cylinder 24. Horizontal flat tubular portion 21
Has a curved flange portion 21a corresponding to an average skeleton that surrounds the right and left orbits of a person on its rear end surface,
A nose recess 21b corresponding to the nose of the binocular observer is formed in the center of the lower portion. In addition, the horizontally long flat tubular portion 2
A pair of vine portion storage recesses 21c for storing the vine portion of the spectacle wearer are formed on the left and right of 1.

A pair of eyepiece insertion tubes 23 are provided so as to correspond to the pair of eyepiece tubes 13 of the binoculars 10. As shown in FIG. 2, the eyepiece insertion tube 23 has a coupling tube 24.
Is formed as an arc-shaped non-circular cylinder centered at,
When the left and right lens frames 11 (eyepiece tube 13) are rotated about the eye width adjustment shaft 12 to adjust the eye width, the eyepiece tube 13 can be moved within the eyepiece insertion tube 23. More specifically, the eyepiece insertion tube 23 is larger than the envelope of the outer circle of the eyepiece tube 13 centered on the arc 12x (FIG. 2) centered on the interpupillary distance adjustment axis 12.

The coupling tube 24 is a female screw portion 12 of the binoculars 10.
It has a cylindrical body corresponding to the position of a, and a fixing male screw 25 (FIG. 1) which can be screwed into the female screw portion 12a can be inserted into the central portion thereof.

Therefore, the shake prevention adapter 20 having the above structure
Is a state in which the eyepiece tube 13 of the binoculars 10 is inserted into the eyepiece insertion tube 23, and the distal end of the coupling tube 24 is brought into contact with the rear end portion of the interpupillary distance adjusting shaft 12 and inserted into the coupling tube 24 Male screw 2
By screwing 5 onto the female screw portion 12a, the female screw portion 12a can be fixed to the binoculars 10.

FIG. 6 shows a state in which the spectacle wearer is observing using the blurring prevention adapter 20 connected to the binoculars 10 as described above. Vines 3 of eyeglasses 30 of the eyeglass wearer
1 is inserted into the vine portion receiving recess 21c of the horizontally long flat tubular portion 21 of the shake prevention adapter 20, and the flange 21a at the rear end of the horizontally long flat tubular portion 21 is brought into contact with the periphery of the orbit including the forehead. The position of the binoculars 10 held by the flat tubular portion 21 can be stabilized. That is, without contacting the lens portion 32 of the eyeglasses 30 with the eyepiece tube 13, by contacting the flange portion 21a, in particular, the upper edge thereof with the forehead,
It is possible to stabilize the binoculars 10 against the eyes and observe an image without blurring. A person who does not wear glasses can obtain a similar feeling of use.

The anti-shake adapter for binoculars of the present invention is prepared according to the structural shape of the target binoculars 10. In the above embodiment, the pair of lens frames 11 (eyepiece tube 1
3) is composed of a completely separated tubular body, and therefore the eyepiece insertion tube 23 of the blur prevention adapter 20 is also provided with a pair corresponding to the pair of separated eyepiece tubes 13.
However, depending on the binoculars, the pair of lens frames 11 (eyepiece tube 1
Since 3) is not clearly separated from the outside in some cases, for such binoculars, the eyepiece insertion tube 23 is a single horizontally long flat tubular section including a pair of eyepieces. It is also possible to do so.

In FIG. 7, the pair of lens frames 11 (eyepiece tube 13) are not clearly separated in outer shape (appearance), and the lens frames 11 are slidable left and right (direction of arrow A), and binoculars 10B.
The combination with the blurring prevention adapter 20B which can be attached or detached with respect to this binoculars 10B is shown. The eyepiece insertion tube 23B of the adapter 20B is formed in a horizontally long shape into which the entire binoculars 10B can be inserted. This horizontal eyepiece insertion tube 2
The width of 3 is formed so that the rear part of the binoculars 10B on the eyepiece side can be inserted when the left and right lens frames 11 of the binoculars 10B are adjusted to the maximum eye width.

Further, in the embodiment of FIGS. 1 to 6, the coupling tube 24 is provided to fix the anti-vibration adapter 20 to the binoculars 10, but not all the binoculars have the female screw portion 12a. The fixing means of the blurring prevention adapter 20 to the binoculars can be determined according to the form of the binoculars. In the embodiment of FIG. 7, the fixing tongue piece 26 is formed so as to project from the lower center of the insertion tube 23 of the blurring prevention adapter 20 toward the front (binoculars 10B side).
6, a fixing screw hole 26a corresponding to a tripod screw hole provided in the binoculars 10B is formed. In addition, the eyepiece insertion tube 23 can be fixed by frictionally contacting the eyepiece tube 13. The blurring prevention adapter of the present invention can be made of a synthetic resin material, a rubber material, or a composite material thereof, and the eyepiece insertion tube 23 itself is elastically deformable when adjusting the interpupillary distance of the binoculars. You may comprise from.

[0017]

As described above, according to the blur preventing adapter for binoculars of the present invention, it is possible to easily prevent or suppress blur at the time of observation, particularly image blur at the time of observation by a spectacle wearer.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an anti-shake adapter for binoculars according to the present invention before coupling with binoculars.

FIG. 2 is a front view of the blurring prevention adapter.

FIG. 3 is a plan view of the same.

FIG. 4 is a bottom view of the same.

FIG. 5 is a right side view of FIG.

FIG. 6 is a front view illustrating the front shape of the binocular tubular portion receiving tube of the blurring prevention adapter for binoculars of FIGS. 1 to 5;

FIG. 7 is a perspective view showing another embodiment of an anti-shake adapter for binoculars according to the present invention.

[Explanation of symbols]

10 binoculars 11 mirror frame 12 Eye width adjustment axis 13 eyepiece 20 Anti-shake adapter 21 Horizontal oblong tubular part 21a Flange part 21b nose recess 21c Vine storage recess 22 Curtain board 23 Eyepiece insertion tube 24 coupling cylinder 25 Fixing Male Screw 26 Fixing tongue 30 glasses 31 vine

Claims (5)

[Claims] 1. A horizontally long flat cylindrical portion surrounding both eyes of a binocular observer and having a nose recess at a portion corresponding to the nose; a curtain plate portion connected to a front end face of the horizontally long flat cylindrical portion. And an eyepiece insertion tube into which the left and right eyepieces of the binoculars are inserted, formed on the curtain plate so as to project forward, and a blur prevention adapter for binoculars. 2. The anti-shake adapter for binoculars according to claim 1, wherein the horizontally elongated flat tubular portion is formed with a storage recess for accommodating a vine portion of the spectacles of an observer for wearing spectacles. . 3. The anti-shake adapter for binoculars according to claim 1 or 2, further comprising a coupling means with the binoculars. 4. An anti-shake adapter for binoculars according to claim 3, wherein the coupling means with the binoculars has a female screw portion provided coaxially with the eye width adjusting axis of the binoculars, and the female screw rotatably supported by the adapter. An anti-shake adapter for binoculars, which is composed of a male screw that is screwed into the body. 5. The anti-shake adapter for binoculars according to claim 4, wherein the eyepiece insertion tube is provided in a pair corresponding to the left and right eyepieces of the binoculars, and the pair of eyepiece insertion tubes is provided. , An anti-shake adapter for binoculars, which is made of a non-circular cylinder that is long in an arc direction around the eye width adjustment axis of the binoculars.