JPH0521053Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to porroprism type binoculars equipped with a magnifying glass that can be used to magnify insects, stamps, letters, figures, etc.

"Prior Art" Binoculars are equipped with an interpupillary distance adjustment mechanism for adjusting the eyepiece to the left and right eye widths, and these include those with a uniaxial structure and those with a biaxial structure.

The binoculars shown in FIG. 8 are an example of a single-axis type. The support arm 11 of the lens barrel 11 on the right side in the drawing
b and a support arm 12b of the left lens barrel 12 provided in the same way are rotatably provided in a support tube 14 into which a central focusing shaft 13 is inserted. Support arm 11 at the fulcrum
b, 12b are bent to adjust the interpupillary distance.

The central shaft 13 slides vertically within the support tube 14 in accordance with the rotation of the screw-coupled operating wheel 15.
The right lever 16 is rotatably connected to its tip.
and a similar left lever 17 are moved in the same direction, and by moving each lever 16, 17, the left and right eyepiece lens barrels 11a, 12a are moved.
The lens optical system is displaced and focused.

The binoculars shown in FIGS. 9 and 10 are an example of a two-axis type.

The lens barrel 21 on the left side of the drawing is pivotable about a transmission shaft 23 provided on one side of the coupling body 22, and the lens barrel 24 on the right side is pivotable about a transmission shaft 25 on the other side of the coupling body 22. The left and right lens barrels 2 are connected using two transmission shafts 23 and 25.
The structure is such that the intervals of 1 and 24 can be adjusted.

That is, the transmission shaft 23 enters into the hinge portion 21a of the left lens barrel 21 near the objective lens,
A small ball 30 is provided on the hinge portion 21b closer to the eyepiece, and these hinge portions 21a and 21b constitute a supporting shaft portion. The right lens barrel 24 also has a similar configuration.

Each of the above-mentioned transmission shafts 23 and 25 has a connecting body 2.
The end portions of a horizontal plate 26 provided within 2 are engaged with each other, and this horizontal plate 26 is further threadedly connected to a spindle 28 which rotates together with an operating wheel 27.

When the operating wheel 27 is rotated, the spindle 28
The horizontal plate 26 moves with the rotation of the transmission shaft 23,
25 in the vertical direction. The sliding movement of the transmission shaft 23 causes the objective lens optical system of the left lens barrel 21 to be displaced and focused via the interlocking arm 29. The same applies to the focus alignment of the right lens barrel 24.

``The problem that the invention attempts to solve'' The single-axis type binoculars shown in Figure 8 are
In addition to the dual axis of the support tube 14 that bendably supports the left and right lens barrels 11 and 12 and the central axis 13 for focusing, the central axis 13 has a right lever 16 and a left lever 17 that control focusing. It is an interpupillary distance adjustment mechanism that provides the following functions. For this reason, the interpupillary distance adjustment mechanism is integrated with the focus matching mechanism, which complicates the configuration and makes it difficult to assemble each component.

A similar problem exists with biaxial type binoculars as shown in FIGS. 9 and 10. That is, the two transmission shafts 23 and 25 serve as support shafts for adjusting the interpupillary distance, and they also serve as driving force transmission members for focus alignment, so that the interpupillary distance adjustment mechanism and the focus alignment mechanism are integrated. It is structured as follows.

In view of the above-mentioned problems, the present invention aims to simplify the interpupillary distance adjustment mechanism by separating the eyepiece lens barrel related to interpupillary distance adjustment and the objective lens barrel related to focus alignment, and to simplify the interpupillary distance adjustment mechanism. The main purpose of this invention is to simplify the focusing mechanism by using one objective lens barrel common to the mechanism, and to additionally configure a magnifying glass by using the objective lens.

"Means for solving the problem" In order to achieve the above object, the present invention has a cylinder shaft rotatably attached to the main body of the binoculars, and can be rotated using this cylinder shaft as a rotation axis. It is equipped with a left and right optical system mechanism consisting of an erecting image chamber body and an eyepiece lens barrel fixed to the rotating eccentric part of this erecting image chamber body, and the viewing light is transmitted from the cylinder axis of the left and right erecting image chamber bodies. The binoculars have one objective lens installed in the binoculars body so that the cylindrical axis of the erecting image chamber body is not located. We propose binoculars with a magnifying glass, characterized in that the magnifying glass is configured with a magnifying glass and a magnifying glass.

"Operation" When the erecting image chamber body is rotated so that the eyepiece portion is adjusted to the naked eye width, the eyepiece lens barrel rotates around the rotation axis of the erecting image chamber body.

Therefore, these binoculars have an interpupillary distance adjustment mechanism that can be separated from the objective lens barrel and change the distance between the left and right eyepiece lens barrels.

Regarding focus matching, it is possible to control the focus of each of the left and right optical system mechanisms by displacing the objective lens of one objective lens barrel.

Further, the above binoculars can be used as magnifying glasses by looking through the objective lens barrel. In other words, when used as a magnifying glass,
Place the object to be observed near the eyepiece lens barrel and look into it from the objective lens barrel side.

The object to be observed can be seen as a magnified image through the through hole of the binocular body and the objective lens.

"Example" Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a partially cutaway plan view of the binoculars, and FIG. 2 is a rear view (eyepiece side) of the binoculars.

In these figures, 31 is the main body of the binoculars, 32
3 is an objective lens barrel, 33 is an erecting image chamber body, and 34 is an eyepiece lens barrel.

The binocular body 31 is disc-shaped, and has a helicoid thread (male thread) 31a carved around its periphery, and a helicoid thread (female thread) 32 carved into the helicoid thread 31a on the rear inner surface of the objective lens barrel 32.
A is engaged.

The objective lens barrel 32 is equipped with an objective lens 35, and the above-mentioned helicoid screw 31 is rotated.
a, 32a, and is fed out in the front-rear direction (first
It is configured to move vertically (in the figure). A shaft hole 31b having a funnel surface is provided at a position in the binocular body 31 through which the optical axis 36 near one side of the objective lens 35 passes. It is rotatably fitted into the shaft hole 31b, and a nut screw 37 is screwed onto the tip of the funnel cylinder part 33a to prevent it from coming off.

This retainer is not limited to the nut screw 37, but other fixing means such as a ring retainer can be used. The erecting image chamber body 33 has an oval shape, and is equipped with known prisms 38 and 39 for erecting the image, and the above-mentioned funnel tube part 33 is provided on one side of the erecting image chamber body 33.
A is formed to protrude so as to serve as a supporting shaft.

An eyepiece lens barrel 34 having an eyepiece lens 40 is fixed to the back surface of the other side of the erecting image chamber body 33, and this lens barrel 34 is configured to rotate as the erecting image chamber body 33 rotates. It's summery.

Although the optical system mechanism on the left side has been described, the optical system mechanism on the right side has a similar configuration, and 41 is an erect image chamber body having a rotation axis on the optical axis line on the other side of the objective lens 35, and 42 is an erect image chamber body having a rotation axis on the optical axis line on the other side of the objective lens 35. This is an eyepiece lens barrel fixed to a rotating eccentric portion of the standing image chamber body 41.

On the other hand, a through hole 43 is formed in the center of the binocular body 31, and this through hole 43 and the objective lens 35 constitute a magnifying glass. Further, it is preferable that a lid 43a for dustproofing is provided in the through hole 43, and the lid 43a is removed only when the lens is used as a magnifying glass.

When the binoculars with magnifying glasses described above are used as binoculars, the left and right erecting image chamber bodies 33, 41 are rotated so that the eyepieces are aligned with the distance between the eyepieces.
As a result, one erect image chamber body 33 is connected to the funnel tube portion 3.
3a as a support axis, and the other erect image chamber body 41 also rotates in the same way, and as a result, the eyepiece lens barrels 34 and 42 move in the direction of the arrow shown in FIG. 2 (or in the opposite direction). You can adjust your interpupillary distance by turning, and in this state you can peer into your field of vision.

Note that during this operation, the funnel tube portion 33a is inserted into the shaft hole 3.
In order to slide on the funnel surface of 1b, the erect image chamber body 33,
41 rotates with appropriate moderation.

When the objective lens barrel 32 is rotated, the lens barrel 32 moves back and forth in accordance with the helicoid screws 31a and 32a, and the position of the objective lens 35 changes.

Therefore, both the left optical system mechanism including the eyepiece lens barrel 34 and the right optical system mechanism including the eyepiece lens barrel 42 are controlled to focus as the position of the objective lens 35 changes.

On the other hand, when the binoculars are used as magnifying glasses, the left and right eyepiece lens barrels 34, 42 are connected to the mounting table 60 for the observation object 60, as shown by chain lines in FIG.
1, etc., and the observation object 60 is made to face the through hole 43. In this case, the dustproof cover 43
Remove a. In the above set state, the objective lens 35
If you look from above, you can see the enlarged observation object 60.

In other words, it can be used as a so-called loupe that can magnify insects, stamps, fossils, letters, figures, etc.

FIG. 3 is a rear view of binoculars showing another embodiment in which the position of the through hole 43 for the magnifying glass is changed.

As shown in the figure, if the through hole 43 is formed near the periphery of the binocular body 31, the erect image chamber bodies 33, 41
The diameter of the objective lens barrel 32 can be reduced by pivoting the objective lens barrel 32 in close proximity to each other.

FIG. 4 is a partially cutaway plan view of binoculars showing another embodiment including a zoom lens barrel 44 as the objective lens barrel.

In this embodiment, a fixed barrel 31c is integrally formed with the binocular body 31, and a second lens support frame 45 is slidably provided on the inner surface of the fixed barrel 31c, and a movable barrel 46 is slidably provided on the outer surface of the fixed barrel 31c.

The second lens support frame 45 includes a second objective lens 47 and a cam pin 48 projecting from the outer circumference.

The fixed cylinder 31c is formed with an elongated guide hole 31d for guiding the cam pin 48, and a keyway 31e for causing the movable cylinder 46 to move straight without rotating.

The above-mentioned movable cylinder 46 is equipped with an elongated cam hole 46a for pushing the cam pin 48 and a key 46b inserted into the key groove 31e, and a helicoid on the forward side thereof to which the first lens support frame 49 is screwed. A screw 46c is provided. Further, the movable tube 46 is provided with a threaded portion 46d with a small pitch interval carved along the circumferential direction, and the internal thread 50a of the operating tube 50 is screwed into this threaded portion 46d. is the stopper pin 5 of the operation tube 50.
A stopper convex portion 46e is provided that can be brought into contact with the stopper convex portion 46e to determine the range of rotation of the operating barrel 50.

The operation barrel 50 described above is movable in the front and back direction together with the movable barrel 46, and the projecting pin 50c provided on the inner surface near the tip of the operating barrel 50 is inserted into the straight groove 49b of the first lens support frame 49.
It's starting to move.

The first lens support frame 49 has a helicoid screw 49a formed on its cylindrical inner surface screwed into a helicoid screw 46c of the movable tube 46, and moves in the front-rear direction when rotationally driven by the operation tube 50. Then, the position of the first objective lens 51 supported by this is changed.

Note that the cylindrical portion 52 fixed to the binocular body 31 so as to protrude between the movable tube 46 and the operation tube 50 is a cover.

The operation of the zoom lens barrel 44 described above will be explained with reference to FIGS. 5 and 6. In addition, FIG. 5 is a simple mirror showing the positional relationship of the fixed barrel 31c, second lens support frame 45, and movable barrel 46 during telephoto operation, and FIG. 6 is a simple mirror showing the positional relationship of each of these members during wide-angle operation. It is a developed view of the cylinder.

When the operating barrel 50 is at its most retracted position as shown in FIG. 4, each member is in the positional relationship shown in FIG. 5, and the distance between the first objective lens 51 and the second objective lens 47 is narrowed. It is in working condition.

When the operation barrel 50 is moved forward, the movable barrel 46 screwed together with the screws 46d and 50a moves forward together, and the cam pin 48 is pushed by the cam hole 46a. At this time, the key 46b is
The movable cylinder 46 is kept non-rotating.

That is, the cam pin 48 pushed by the cam hole 46a is guided by the guide hole 31d of the fixed cylinder 31c, and moves forward while rotating. With this action,
The distance between the second lens support frame 45, which moves forward integrally with the cam pin 48, and the first lens support frame 49, which moves forward together with the movable barrel 46, gradually increases, and a zooming operation corresponding to the movement position of the operation barrel 50 is performed. becomes. When the operating barrel 50 is moved most forward, each member assumes the positional relationship shown in FIG. 5, resulting in a wide-angle operation state in which the distance between the first objective lens 51 and the second objective lens 47 is increased.

In this wide-angle operating state, if the operation barrel 50 is moved backward in the opposite direction to the above, the first objective lens 50
The distance between the lens 1 and the second objective lens 47 gradually narrows, leading to an operation toward a telephoto operation state.

On the other hand, when the operating barrel 50 is rotated, the operating barrel 50 rotates around the movable barrel 46 within the range where the stopper pin 50b is limited by the stopper convex portion 46e. That is, the non-rotating threaded portion 46
The operating cylinder 50 rotates while the inner screw 50a is engaged with the inner screw 50a.

As a result, the first lens support frame 49 is rotationally driven by the rotation of the protruding pin 50c inserted into the straight groove 49b, and the first lens support frame 49 is extended by the action of the helicoid screws 46c and 49a. That is, the first objective lens 51 changes its position in accordance with the rotational operation of the operation tube 50, and the focal points of the left optical system mechanisms 33 and 34 and the right optical system mechanisms 41 and 42 are aligned.

Similar to the embodiment shown in FIG. 1, the binoculars equipped with the zoom lens barrel 44 described above can also be used as a magnifying glass, and the magnification of the observation object 60 can be changed by a zooming operation.

FIG. 7 is a rear view of binoculars showing an embodiment in which the left and right erect image chamber bodies 33 and 41 are linked.

As shown in the figure, each of the erecting image chamber bodies 33, 41 is provided with toothed plates 53a, 53b inwardly, and an interlocking mechanism is provided in which these toothed plates 53a, 53b are meshed.

In this embodiment, when one of the eyepiece lens barrels, for example, the eyepiece lens barrel 34, is rotated, the other eyepiece lens barrel 42 is rotated in conjunction.

In addition, there is a through hole 4 for a magnifying glass provided in the binocular body.
The hole 3 is not limited to a circular shape but may be square, and the hole diameter can be arbitrarily determined.

"Effect of the invention" As described above, in the binoculars according to the invention, each of the left and right optical system mechanisms has an eyepiece lens barrel located at the rotationally eccentric part of the erecting image chamber that is rotatably pivoted to the binoculars body. Because of the fixed configuration, the interpupillary distance adjustment mechanism for adjusting the distance between the left and right eyepiece lens barrels can be configured separately from the focusing mechanism, and this adjustment mechanism has a simple configuration. The binoculars are easy to produce with a small number of parts.

In addition, since the binoculars of the present invention are provided with one objective lens barrel common to the left and right optical system mechanisms, this lens barrel can be operated to function as a focus matching mechanism for focusing, and the zoom lens When equipped with a lens barrel, there is no need to provide a zooming mechanism on the left and right objective lens barrels as in the conventional case.
Its configuration becomes simple.

Furthermore, the binoculars of the present invention are equipped with a magnifying glass consisting of a through hole in the binocular body and an objective lens, so it has a telephoto function for peering into the distance and a magnifying view for observing objects such as insects and stamps. These are extremely convenient binoculars with a magnification function.

[Brief explanation of the drawing]

1 to 7 show embodiments of the present invention.
Figure 2 is a partially cutaway plan view of the binoculars, Figure 2 is a rear view of the binoculars, and Figure 3 is a rear view of the binoculars showing another embodiment in which the position of the magnifying glass through hole provided in the binocular body is changed. , FIG. 4 is a partially cutaway plan view of binoculars showing another embodiment equipped with a zoom lens barrel, and FIGS. 5 and 6 are simplified mirrors for explaining the operation of the zoom lens barrel. A developed view of the barrel, FIG. 7 is a rear view of binoculars showing another embodiment in which the left and right erect image chamber bodies are linked together, FIGS. 8 to 10 show conventional examples, and FIG. 8 is a single-axis type binocular. FIG. 9 is a partially cutaway plan view showing two-axis binoculars, and FIG. 10 is a cross-sectional view taken along line A--A in FIG. 9. 31... Binocular body, 31a... Helicoid screw, 31b... Shaft hole, 32... Objective lens barrel,
32a... Helicoid screw, 33... Erecting image chamber body, 33a... Funnel tube section, 34... Eyepiece lens barrel, 41... Erecting image chamber body, 42... Eyepiece lens barrel, 43... Magnifying glass Through hole for 44...zoom lens barrel.

Claims (1)

[Scope of utility model registration request] It has a cylindrical shaft that is rotatably attached to the binocular body,
Each left and right optical system mechanism is comprised of an erect image chamber body that can be rotated about this cylinder axis as a rotation axis, and an eyepiece lens barrel that is fixed to a rotating eccentric portion of this erect image chamber body. In addition, one objective lens is provided on the binocular body so that the viewing light enters from the cylindrical axis of the left and right erecting image chamber bodies, and an objective lens is provided in the part of the binocular body where the cylindrical axis of the erecting image chamber body is not located. 1. Binoculars with a magnifying glass, characterized in that a through hole communicating with the lens is formed, and the through hole and an objective lens constitute a magnifying glass.