JPS63161424A - Supporting mechanism for lens-barrels of binocular telescope - Google Patents

Abstract

PURPOSE:To always set the optical axis of an objective lens to a certain position by supporting the eyepiece lens side of each lens-barrel on the optical axis of the objective lens through a bearing plate by a coupling member so that the lens-barrel is turned around the optical axis of the objective lens. CONSTITUTION:A lens-barrel 6 is freely turnably supported in a holding hole 2 so that an optical axis l of the objective lens coincides with an axial line (k) of the holding hole 2. The eyepiece lens-side end face placed on the optical axis l of an objective lens storage part 6b is pierced by a reception hole 8. A bearing plate 11 provided with a reception hole 10a which cooperates the reception hole 8 to freely rotatably support a ball 9 has through holes 12a-12d positioned correspondingly to tapped holes 4a-4d of a coupling part 1 and is fixed to the coupling part 1 by a screw 13 to support the lens-barrel 6 by the coupling member 1 freely rotatably around the optical axis l of the objective lens. Thus, respective optical axes of objective lenses are only rotated in the same positions and the distance between optical axes is not changed though the distance between respective optical axes of eyepiece lenses is changed for the purpose of adjusting the width between eyes.

Description

[Detailed Description of the Invention] The present invention relates to binoculars, particularly binoculars using a Porro prism or a Porro mirror. This invention relates to a support mechanism for a mirror body in a mirror.

The pair of left and right mirror bodies of conventional binoculars of this type are generally supported by a coupling member so as to be rotatable about an axis parallel to the optical axes of the objective lens and eyepiece lens. be.

Therefore, when each mirror body is rotated in the direction toward and away from each other in order to adjust the interpupillary distance, the optical axes of the objective lenses also move in the direction toward and away from each other, and the distance between the axes increases. The distance changes, so
It is difficult to accurately adjust the optical axis during assembly, and there is also the drawback that it is impossible to mount flat polarizing filters or the like inside the left and right sides.

An object of the present invention is to provide a support mechanism for mirror bodies in binoculars that eliminates such drawbacks.

+1 In binoculars using Porro prisms or Porro mirrors for fortune-telling, each objective lens side of a pair of left and right mirrors is rotatably supported on a coupling member at the periphery, that is, the outer periphery or the inner periphery, while The optical axis of each mirror body is the axis of the objective lens,
The eyepiece side of each mirror body is supported by the coupling member on the optical axis of each objective lens through a bearing plate, respectively, so as to be able to rotate.

Since each mirror body was supported without rotating around the optical axis of its objective lens, even if the distance between the optical axes of each eyepiece is changed to adjust the interpupillary distance, the light of each objective lens remains unchanged. The axes only rotate in the same position, and the distance between them does not change.

BRIEF DESCRIPTION OF THE DRAWINGS Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Here, Fig. 1 is a partially cutaway plan view showing the entire binoculars, and Fig. 2 is the same (a side view showing the eyepiece side,
3 is a side view showing the objective lens side, FIG. 4 is a schematic exploded view of the main parts, and FIG. 5 is a side view showing the objective lens side of the mirror body.

As shown in FIG. 4, the joint 1 has a pair of retaining holes 2 and 3 extending parallel to each other's axes and having a part of the peripheral wall broken at one end. There is. As shown in FIG. 1, the inner circumferential surfaces of the unbroken side ends of these holding holes 2.3 are tapered surfaces 2a (however, the holding holes 2.3
(Only shown in the figure), and two pairs of upper and lower screw holes 4a, 4b, 4CI4 are provided on the fractured end surface of the joint l for screwing the bearing plate and the cover plate, which will be described later, respectively.
d, 5a, 5b, 5c, and 5d are drilled.

As is clear from FIGS. 1 and 3, each holding hole 2.3 has a pair of left and right mirror bodies 6.7 on the objective lens side.
They are rotatably fitted in such a way that their axes are aligned with each other, and the outer circumferential surface of the fitting tip of each mirror body 6.7 is connected to each of the holding holes 2.7.
The tapered surface 6a follows the tapered surface 2a of No. 3 (however, only the mirror body 6 is shown).
The objective lens side of each mirror body 6.7 is rotatably supported by the coupling member 1 at its outer periphery, and by joining the tapered surfaces 2a, 6a, each mirror body 6. 7 can be smoothly rotated with respect to each holding hole 2, 3.Next, the structure of each mirror body 6.7 will be described in detail together with its support mechanism. Since they have the same configuration except for the difference in orientation due to the difference, only the mirror body 6 will be described.

As shown in FIG. 4, the mirror body 6 has an objective lens housing section 6b.
and an eyepiece storage section 6C, and each of these storage sections 5
Although not shown, an optical lens system including an objective lens, an eyepiece lens, and a Porro prism is built into the lenses b and 5c. The mirror body 6 is rotatably supported by the holding hole 2 so that the optical axis 1 of the objective lens is aligned with the axis of the holding hole 2. Further, a receiving hole 8 is provided in the eyepiece side end surface located on the optical axis l of the objective lens storage portion 6b.
is transparent. The mirror body 6 has a receiving hole 10aG (which rotatably supports the ball 9 together with the receiving hole 8).
The rounded bearing plate 11 has its respective through holes 12a, 12b, 12
c, 12d are each screw hole 4” of joint part l + 4b, 4c
, 4d, and is fixed to the coupling portion 1 with screws 13, thereby being supported by the coupling member 1 in a freely rotatable state about the optical axis 1 of the objective lens. This rotation range is such that both ends of the protruding edge portion 14 protruding from the outer periphery of the objective lens storage portion 6b of the mirror body 6 along the eyepiece storage portion 6C shown in FIG. It is regulated by coming into contact with the edges la and lb. Further, an eyepiece cover 15 is provided on the end face of the eyepiece housing portion 6C of the mirror body 6.

The mirror body 7 also has the same configuration as above, and the support mechanism corresponds to the receiving hole lOb of the bearing plate 11 instead of the receiving hole 10a.

In addition, as shown in FIG. 1 and the second surface, in order to hide the bearing plate 11, the cover plate 16 is inserted into each screw hole 5a of the joint part 1,
5b, 5c, and 5d with screws 17, and
As shown in the figure, a front cover 18 is fitted on the side of the coupling portion 1 opposite to the cover plate 16. Further, the lever 19 provided on the upper surface of the connecting portion 1 shown in FIGS. 1 to 4 is connected to a pair of eyepiece frames (not shown), and by rotating the lever 19, Move the eyepiece frame in the axial direction within the mirror body 6.7,
This is used to adjust the focus.

Since this embodiment is configured as described above, when adjusting the interpupillary distance, the distance between the optical axes of the eyepieces can be changed by rotating the eyepiece storage sections 6C and 7C of the respective mirror bodies 6 and 7. However, since its rotation axis coincides with the optical axis 1.1' of the objective lens, the optical axes 1, 1' are always at a constant position, and the distance between the axes does not change.

Note that the present invention is not limited to the above-mentioned embodiments; for example, an optical lens system having a Porro mirror may be used, and the mirror body 6.7 can be rotatably supported by the bearing plate 11. It is also possible to use a shaft body in addition to the ball 9, and furthermore, the coupling member 1 may be rotatably supported on the inner peripheral surface of each mirror body 6.7, as long as it does not deviate from the technical idea. Of course, many modifications can be made within the system.

As is clear from the above explanation, according to the present invention, the optical axis of the objective lens is always at a fixed position, so flat polarizing filters, etc. can be mounted on the left and right sides. In addition, it is easy to align the optical axis tA during assembly, and since the connecting members that support each mirror remain stationary even when adjusting the interpupillary distance, it is also possible to provide a hole on the bottom surface for attaching a tripod. It can produce many excellent effects.

[Brief explanation of the drawing]

The figures show a preferred embodiment of the present invention, and Fig. 1 is a partially cutaway plan view showing the entire binoculars, Fig. 2 is the same (side view showing the eyepiece side), and Fig. 3 is the same (side view showing the objective lens side). FIG. 4 is a schematic exploded view of the main parts, and FIG. 5 is a side view showing the objective lens side of the mirror body. 1...Joining portion 2.3...Holding hole 6 .7...
Mirror body 6a...Tapered surfaces 6b, 7b...Objective lens storage section 6c. 7C...Eyepiece storage part 8...Hole 9...
・Balls 10a, 10b...Receiving hole 11...Bearing plate 14...Protruding edge Figure 1 Original Figure 3 Procedural Amendment (Voluntary April 1b, 1988, 4th Patent Office aM Black 1) Akira m till rl: emotion;
Mouse; Door 1, Indication of the case 1986 Patent Application No. 310427 2, Name of the invention Support mechanism for the mirror body in double IN SN 3, Person making the amendment Relationship with the case 1 person who issued the patent Address Kitakatsu Shin, Saitama Prefecture 1-9-23 Sugito, Sugito-cho, Gun
Name Vetri Kogyo Co., Ltd. Company Representative Teruo Kusama 4, Agent ■103 Address 4-6-136, Nihonbashi Honseki-cho, Chuo-ku, Tokyo Specification subject to amendment ■1 Name of the invention Mirror in binoculars Body Support Mechanism 2, Claims In a binocular using a Porro prism or a Porro mirror, each objective lens side of a pair of left and right mirror bodies is rotatably supported on a coupling member at its periphery, while each of the mirror bodies is The eyepiece lens side of each mirror body is supported by the coupling member on the optical axis of each objective lens through a bearing plate so that the mirror body can rotate about the optical axis of the objective lens. !
A support mechanism for the mirror body in a mirror. 3. Detailed Description of the Invention The present invention relates to a binocular mirror, and more particularly to a support mechanism for a mirror body in binoculars using a porroprism or a porromirror. The left and right mirror bodies of this type of conventional binoculars are generally supported by a coupling member so as to be rotatable about an axis parallel to the optical axes of the objective and eyepiece lenses. . Therefore, when each mirror body is rotated in the direction toward and away from each other in order to adjust the interpupillary distance, the optical axes of the objective lenses also move in the direction toward and away from each other, and the distance between the axes increases. The distance changes, so
There are disadvantages in that it is difficult to accurately adjust the optical axis during assembly, and it is impossible to mount flat plate-shaped polarizing filters or the like within the left and right sides. An object of the present invention is to provide a support mechanism for mirror bodies in binoculars that eliminates such drawbacks. In binoculars using Porro prisms or Porro mirrors for divination, each objective lens side of a pair of left and right mirror bodies is rotatably supported on a coupling member at its periphery, that is, its outer periphery or inner periphery. , the eyepiece side of each mirror is supported by the coupling member on the optical axis of each objective lens through a bearing plate, so that each mirror body can be rotated about the optical axis of the objective lens; It is characterized by Since each mirror body is supported to rotate around the optical axis of its objective lens, even if the distance between the optical axes of each eyepiece is changed to adjust the interpupillary distance, the distance between the optical axes of each eyepiece can be adjusted. The optical axes simply rotate at the same position, and the distance between the axes does not change. DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Here, Fig. 1 is a partially cutaway plan view showing the entire binoculars, Fig. 2 is a side view similarly showing the eyepiece side,
FIG. 3 is a side view showing the objective lens side, FIG. 4 is a schematic exploded view of the main parts, and FIG. 5 is a side view showing the objective lens side of the mirror body. As shown in FIG. 4, the joint 1 has a pair of retaining holes 2°3 extending parallel to each other's axes, and having a part of the peripheral wall broken at the -width part. ing. As shown in FIG. 1, the inner circumferential surfaces of the unbroken side ends of these holding holes 2.3 are tapered surfaces 2a (however, the holding holes 2.3
(Only shown in the figure), and two pairs of upper and lower screw holes 4a, 4b, 4c are provided on the broken end surface of the coupling portion 1 for screwing a bearing plate and a cover plate, which will be described later, respectively. 4d, 5a, 5b, 5c, and 5d are drilled. As is clear from FIGS. 1 and 3, each holding hole 2.3 has a pair of left and right mirror bodies 6.7 on the objective lens side.
They are rotatably fitted in such a way that their axes are aligned with each other, and the outer circumferential surface of the fitting tip of each mirror body 6.7 is connected to each of the holding holes 2.7.
The tapered surface 6a follows the tapered surface 2a of No. 3 (however, only the mirror body 6 is shown).
The objective lens side of each mirror body 6.7 is rotatably supported by the coupling member 1 at its outer periphery, and by joining the tapered surfaces 2a and 5a, each mirror body 6.7 is rotatably supported by the coupling member 1. 7 can be smoothly rotated with respect to each holding hole 2, 3.Next, the structure of each mirror body 6, 7 will be described in detail together with its supporting structure, but both of them have a fitting position. Only the mirror body 6 will be described because it has the same configuration except for the difference in hand due to the difference in left and right sides. As shown in FIG. 4, the mirror body 6 has an objective lens housing section 6b.
and an eyepiece storage section 6C, and each of these storage sections 5
Although not shown, an optical lens system including an objective lens, an eyepiece lens, and a Porro prism is built into the lenses b and 5c. The mirror body 6 is rotatably supported by the holding hole 2 so that the optical axis l of the objective lens coincides with the axis of the holding hole 2. Further, a receiving hole 8 is provided in the eyepiece side end surface located on the optical axis 1 of the objective lens storage portion 6b.
is transparent. The mirror body 6 has a bearing plate 11 provided with a receiving hole 10a that rotatably supports the ball 9 in cooperation with the receiving hole 8, and each of the through holes 12a, 12b, 12c.
, 12d are the respective screw holes 4a, 4b, 4c, 4d of the joint part 1
By being fixed to the coupling part 1 with a screw 13 at a position corresponding to , the objective lens is supported by the coupling member 1 in a rotatable state about the optical axis 1 of the objective lens. This rotation range is determined by a projecting edge portion 1 provided on the outer periphery of the objective lens housing portion 6b of the mirror body 6 along the eyepiece lens housing portion 6C shown in FIG.
4 is regulated by coming into contact with the broken edges 1a and 1b of the joint portion 1. Further, an eyepiece cover 15 is provided on the end surface of the eyepiece housing portion 6C of the mirror body 6. The mirror body 7 also has the same configuration as described above, and the supporting mechanism corresponds to the receiving hole 10b of the bearing plate 11 instead of the receiving hole 10a. Note that, as shown in FIGS. 1 and 2, in order to hide the bearing plate 11, the cover plate 16 is inserted into each screw hole 5a of the coupling part 1.
5b, 5c, and 5d with screws 17, and
As shown in the figure, a front cover 18 is fitted on the side of the coupling portion l opposite to the cover plate 16. Further, a lever 19 provided on the upper surface of the coupling portion 1 shown in FIGS. 1 to 4 is connected to a pair of objective lens frames (not shown), and by rotating the lever 19, Focus adjustment is performed by moving the objective lens frame in the axial direction within the mirror body 6.7. Since this embodiment is configured as described above, when adjusting the interpupillary distance, the distance between the optical axes of the eyepieces can be changed by rotating the eyepiece storage sections 6c and 7c of each mirror body 6.7. However, since its rotation axis is parallel to the optical axis 1.1" of the objective lens, the optical axis 1.1" is always at a constant position, and the distance between the axes does not change. However, the present invention is not limited to the above-mentioned embodiments. For example, an optical lens system having a Porro mirror can be used, and the rotatable support of the mirror bodies 6 and 7 by the bearing plate 11 is supported by the balls 9. It is also possible to use a shaft body in addition to the above, and furthermore, the coupling member 1 may be rotatably supported on the inner peripheral surface of each mirror body 6.7, without departing from the technical idea. Of course, many modifications can be made.Kanny-ChestnutAs is clear from the above explanation, according to the present invention, the optical axis of the objective lens is always at a fixed position. In addition, it is easy to adjust the optical axis during assembly, and the connecting member that supports each mirror remains stationary even when adjusting the interpupillary distance, making it unnecessary to attach a tripod to the bottom surface. 4. A simple explanatory diagram of the drawings shows a preferred embodiment of the present invention, and FIG. FIG. 2 is a side view showing the eyepiece side, FIG. 3 is a side view similarly showing the objective lens side, FIG. 4 is a schematic exploded view of the main parts, and FIG. The figure is a side view showing the objective lens side of the mirror body. 1... Connecting portion 2.3... Holding hole 6.7...
Mirror body 6a...Tapered surfaces 6b, 7b...Objective lens storage section 6c.

Claims (1)

[Claims] In binoculars using Porro prisms or Porro mirrors, each objective lens side of a pair of left and right mirrors is rotatably supported on a coupling member at its periphery, and each mirror body is rotated around the optical axis of the objective lens. A support mechanism for mirror bodies in binoculars, characterized in that the eyepiece side of each mirror body is supported by the coupling member via a bearing plate on the optical axis of each objective lens so as to be rotatable.