JPH1039234A - Foldable binoculars - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the antidazzle characteristic of foldable binoculars and to cut off specially direct light beams from the both left and right sides on the front face of an objective lens. SOLUTION: In the binoculars, see-through holes 4, 5 for left and right binoculars are formed on an objective lens mounting surface 2 and an eyepiece lens mounting surface 3 as a pair of opposite surfaces of a square-shaped paper box foldable in the flat state back and forth and the objective lenses 6 made of synthetic resin plate are mounted in a set of see-through holes. Eyepiece lenses 7 made of the same synthetic resin are mounted in other set of the see- through holes 5, a vertical pair of eaves 8, 9 protruded forward is provided on the upper and lower edges of the objective lens mounting surface 2 of the box 1 and a rectangular net-like antidazzle filter 10 is freely attachably detachably mounted on the objective lens mounting surface 2 so as to cover the objective lenses 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art As disclosed in Japanese Utility Model Publication No. 4-12488, a sheet of paper that can be assembled in a box shape and a plastic lens plate that can be attached to a transparent hole formed in the paper. 2. Related Art Foldable binoculars made of paper are known.

Referring to FIG. 1, such folding binoculars have a pair of opposing surfaces of a rectangular box 1 made of paper. The objective lens 6 is attached to the pair of transparent holes 4, 4, and the eyepiece 7 is attached to the other pair of transparent holes 5, 5, and protrudes forward from the upper and lower edges of the objective lens mounting surface 2 of the box 1. A pair of upper and lower eaves 8 and 9 are provided.

In the folding binoculars described above, the left and right engagement flaps 14 and 15 are respectively arranged along the fold line 18 along the box 1.
Are folded inward, and the main body upper surface 11 and the main body bottom surface are each bent outwardly of the box body 1 along the fold line to be folded flat in the front-rear direction.

[0005]

However, in the above-mentioned conventional folding binoculars, a pair of upper and lower eaves portions cut direct light from above and below to improve the anti-glare property. When direct light enters from the side or obliquely forward, the eaves cannot cut the direct light that enters the objective lens from those directions. There is a problem that it is easy to cause.

[0006] In recent years, such problems are particularly likely to occur when watching sports or drama at night in a facility where the performance of lighting equipment has been improved and the illuminance has increased.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to improve the anti-glare property of the folding binoculars, and particularly to cut off direct light from both the left and right sides and the left and right front of the front surface of the objective lens. .

[0008]

In order to solve the above-mentioned problems, according to the present invention, a pair of opposing surfaces of a foldable paper rectangular box are provided with left and right binocular see-through holes, respectively. An objective lens is attached to a pair of perspective holes on the opposite surface, and an eyepiece is attached to another pair of perspective holes on the opposite surface, and protrudes forward from upper and lower edges of the objective lens attachment surface of the box, respectively. In the folding binoculars provided with a pair of upper and lower eaves, the anti-glare filter in the form of a net is provided on the mounting surface of the objective lens or the eaves of the box so as to cover the front of the objective lens. .

The net-shaped anti-glare filter arranged as described above restricts not only the light incident from the vertical direction but also the light intensity incident from both the left and right sides and the left and right front. Only the light reflected from the direction can be recognized, and the anti-glare property of the foldable binoculars is enhanced without directly looking at light such as sunlight or sunlight from both left and right sides and the front and left.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. First, the net-shaped anti-glare filter used in the present invention restricts the amount of light from the front to a required amount (for example, about 50%) and allows the light to pass through. The back surface is colored black so as to easily absorb light.

The material of the mesh forming the anti-glare filter is not particularly limited. For example, synthetic fibers such as glass fibers (organic fibers or inorganic fibers) or natural fibers may be used. Examples thereof include those obtained by spinning and weaving into a plain weave or other structure to form a net, or those obtained by forming a synthetic resin into a lattice.

Further, a preferable result has been obtained by employing an anti-glare filter in which a silver paint is applied to one side of a net made of glass fibers coated with a black paint. The anti-glare filter having the same function can be manufactured by knitting and weaving aluminum-deposited yarn in a net shape and applying a black paint containing carbon or the like to one surface of the net.

As shown in FIGS. 1 to 3, the foldable binoculars according to the embodiment have an objective lens mounting surface 2 which is a pair of opposing surfaces of a rectangular box 1 made of paper which can be folded flat in the front-rear direction. And the left and right binocular perspective holes 4 and 5 are formed on the eyepiece mounting surface 3 respectively, and the objective lens 6 made of a synthetic resin plate is attached to one set of the transparent holes 4 and the other set of the transparent holes 5 is provided. An eyepiece 7 made of the same synthetic resin is attached, and a pair of upper and lower eaves 8 and 9 protruding forward are provided on upper and lower edges of the objective lens mounting surface 2 of the box 1, respectively. Both ends of a rectangular net-shaped anti-glare filter 10 are detachably mounted inside the parts 8 and 9, and are provided so as to cover the front of the objective lens 6.

The paper box 1 is formed by folding a paper (blank) cut into the shape shown in FIG. 2 along a fold line and bonding important points. That is,
Each of the blanks in FIG.
a, a horizontally long side in which parts including an objective lens mounting surface 2, an upper eaves lower piece 8b, an upper eaves upper piece 8a, a main body upper surface 11, an eyepiece mounting surface 3, a main body bottom surface 12, and a lower eaves lower piece 9b are sequentially connected. It comprises a main body 13 having a shape, and two sets of engaging flaps 14 and 15 which are respectively continuous with both ends of the objective lens mounting surface 2 and the eyepiece mounting surface 3.

As shown by the dashed lines in the drawing, the objective lens mounting surface 2 and the eyepiece mounting surface 3 are each an objective lens in which a lens portion is integrally formed on a plate made of a synthetic resin having good translucency such as methacrylic resin. The eyepiece 6 or the eyepiece 7 is fixed by adhesion (or adhesion). Also, fold lines 20 and 21 are formed in the longitudinal direction at the boundaries between the components, the main body upper surface 11 and the main body bottom surface 12, and slits 16 are formed in the engagement flaps 14.

As shown in FIGS. 2 and 3, a strip-shaped surface fastener 17 is attached to the lower eaves upper piece 9a and the upper eaves lower piece 8b, and the back surface of the anti-glare filter 10 (black side). The other piece of the hook-and-loop fastener 17 is also adhesively fixed to the position corresponding to the above. Although not shown, the back surface of the anti-glare filter 10 can of course be attached directly to the main part of the objective lens attachment surface 2 by bonding or other means.

At the time of assembling these parts, bends are made along each fold line shown by a solid line in the figure, and the lower and upper pieces (8a and 8b, 9a and 9b) of each eave are adhered and stacked. The edges of the engaging flaps 15 are inserted into the slits 16 of the two sets of engaging flaps 14 and joined together, and assembled as shown in FIG.

Then, the back surface of the anti-glare filter 10 on which the black paint is applied is fixed to the lower eaves upper piece 9a and the upper eaves lower piece 8b with a hook-and-loop fastener 17.

The assembled foldable binoculars are bent inside the box 1 along the fold lines 18 of the engagement flaps 14, respectively, and the main body upper surface 11 and the main body bottom surface 1 are folded.
2 can be bent outward along the fold lines 20 and 21, respectively, of the box body 1 and can be folded in the front-rear direction in a thin and flat state.

Note that, as shown in FIG.
Plastic rivet 1
9 can also be employed. Such rivets 19
The anti-glare filter 10 can be appropriately attached and detached by adopting a male / female piece that can be snap-joined.

The foldable binoculars according to the embodiment having the above-described configuration includes the upper eaves 8 of the pair of upper and lower eaves 8 and 9.
Is formed slightly longer and has an anti-glare filter 10. When this is used outdoors (day and night) by a large number of panelists, it is hardly affected by direct sunlight and lighting equipment, and has an anti-glare property. It was confirmed to be very excellent.

The anti-glare filter 10 shown in FIG.
Is a design drawing printed on the surface thereof. For example, an advertisement or a trademark can be adopted as the design, and in this case, the anti-glare function is not impaired. In this way, the problem of the conventional product that the front surface of the foldable binoculars cannot be printed due to the presence of the objective lens 6 can be solved. Function can be enhanced. In order to sufficiently exhibit such a function, it is preferable to provide the anti-glare filter 10 as close to the tip of the eaves 8 and 9 as possible.

[0023]

As described above, according to the present invention, a net-like anti-glare filter for covering the front of the objective lens is provided on the objective lens mounting surface or the eaves of the foldable binoculars. In particular, there is an advantage that direct light from both left and right sides and right and left front of the front surface of the objective lens can be cut.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment.

FIG. 2 is an exploded view of a rectangular box made of paper according to the embodiment.

FIG. 3 is a side view showing an example of mounting the anti-glare filter of the embodiment.

FIG. 4 is a side view showing another example of mounting the anti-glare filter of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box 2 Objective lens mounting surface 3 Eyepiece mounting surface 4, 5 Transparent hole 6 Objective lens 7 Eyepiece 8 Eave portion 8a Upper eave upper part 8b Upper eave lower part 9 Eave 9a Lower eave upper part 9b Lower eave Subordinate piece 10 Anti-glare filter 11 Main body top surface 12 Main body bottom surface 13 Main body 14, 15 Engagement flap 16 Slit 17 Surface fastener 18, 20, 21 Folded line 19 Rivet

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] August 5, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

Claims (2)

[Claims] 1. A pair of opposing surfaces of a foldable paper square box are formed with left and right binocular see-through holes, respectively.
Attach an objective lens to one set of perspective holes of the facing surface, and attach an eyepiece to another set of perspective holes of the facing surface,
In a folding binocular provided with a pair of upper and lower eaves protruding forward at upper and lower edges of an objective lens mounting surface of the box, a net-like anti-glare filter is provided on the objective lens mounting surface or the eaves of the box. Is provided so as to cover the front of the objective lens. 2. The folding binoculars according to claim 1, wherein the net-shaped anti-glare filter is formed by applying a silver paint on one side of a net coated with a black paint.