JP3040927U - Lateral slide type interpupillary adjustment mechanism for binocular optics - Google Patents

Abstract

(57) Abstract: In binoculars, a lens barrel in which a visible frame for composition setting is optically fixed is internally slid sideways by eliminating the contact / separation operation method by rotating two optical axis gap adjusting means. By adopting the method, the visible frame for composition setting can always be maintained in a normal state even if the two optical axis gaps are arbitrarily adjusted, and the adjusted optical axis gap can be maintained immovably until readjustment is performed. To do so. SOLUTION: A pair of left and right lens barrels 2, 2 arranged in a casing 1 of binoculars are independently slidable in opposite directions along at least two rows of guides 3 arranged in the transverse direction of these lens barrels 2. A rack 4 parallel to the guide 3 is provided on the opposite sides of the lens barrels 2 so as to face each other at a predetermined interval, and a pinion 5 is provided between the racks 4 and 4 of the left and right lens barrels 2 and 2. , And the operation knob 6 on the outside of the casing 1 is integrally rotatably connected to the pinion 5 so that the operation knob 6 is elastically pressed from the outside of the casing 1 via the friction sheet 7 and the spring plate 8. It is what makes me.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a lateral slide type interpupillary adjustment mechanism of a binocular optical device.

[0002]

[Technical background]

 The binocular optical device is configured so that each user can arbitrarily adjust the gap width between the optical axes of two lens barrels parallel to each other for different pupil widths.

[0003]

[Prior art]

 For binoculars whose optical axes are parallel to each other, between the two optical axes, one support shaft that is parallel to the optical axes is pivotally supported by the tips of the arms protruding from the outer circumference of the lens barrel, and Then, by rotating both arms, the gap width between the two optical axes can be arbitrarily adjusted.

[0004]

[Problems to be solved by the device]

 Recently, many binoculars used as assistants for telephoto cameras have appeared.

This is provided with a visible frame for composition setting in the lens barrel, and this visible frame is basically an optical interior means appealing to the eyes and is optically installed at a fixed position in the lens barrel. ing.

In the case where the visible frame for composition setting fixed in the lens barrel is installed in this way, when the above-mentioned rotary gap adjusting means is used for the optical axis gaps of the two lens barrels, It is assumed that the visible frame for composition setting may move together with the rotation of the lens barrel around the support shaft, and that a visible frame that tilts may appear. It is difficult to use.

This is to adjust the gap between the two optical axes with a radius of an arm which is a part of a lens barrel pivotally supported by a support shaft located in the middle, and rotate the lens barrel around the support shaft. However, since each of the lens barrels is operated to separate from and to adjust the distance between the optical axes, a visible frame for composition setting that is optically installed inside the lens barrel is formed integrally with the lens barrel. Due to this, the visible frame for composition setting moves together with the lens barrel that rotates around the support shaft, and the visible frame for composition setting maintains the normal position even if the gap between the two optical axes is adjusted. There are drawbacks that are often not possible.

In view of the above, the present invention eliminates the operation method of rotating the lens barrel in which the visible frame for composition setting is optically fixed inside the binoculars by rotating the two optical axis gap adjusting means, The main purpose of this method is to always maintain the normal state of the visible frame for composition setting even if the two optical axis gaps are adjusted arbitrarily.

In the casing, the gap adjusting means for the two lens barrels that can move laterally along the guide engages one pinion with each rack that is fixedly attached to one side of each lens barrel and protrudes. The purpose is to allow each lens barrel to be brought into and out of contact with each other by the rotational movement given to the pinion.

Further, an operation knob is attached to the pinion shaft, and a friction member is interposed between the casing for pivotally supporting the pinion shaft and the operation knob to externally rotate the pinion shaft. The purpose is to prevent natural rotation unless it is possible.

[0011]

[Means for Solving the Problems]

 As a means for achieving the above-mentioned object, the present invention provides a pair of left and right lens barrels arranged in a casing of binoculars in opposite directions along at least two rows of guides arranged in the transverse direction of these lens barrels. It is slidably engaged independently, and racks parallel to the guides are provided on opposite sides of these lens barrels so that they face each other with a predetermined gap, and a pinion is freely rotatable between the racks of the left and right lens barrels. The operation knob on the outside of the casing is integrally rotatably connected to the pinion.

In another invention, a pair of left and right lens barrels arranged in a casing of binoculars is slidable in opposite directions along at least two rows of guides arranged in the transverse direction of these lens barrels. The racks of the left and right lens barrels can be rotated forward and backward while the racks of the left and right lens barrels are independently engaged with each other and racks parallel to the guides are provided on opposite sides of the lens barrels so as to face each other at a predetermined interval. The operation knob on the outside of the casing is engaged with the pinion so as to rotate integrally, and the operation knob is elastically pressed from the outside of the casing via the friction sheet and the spring plate.

[0013]

[Embodiment of the invention]

 The guides 3 are installed in parallel in the lateral direction in the casing 1 of the binoculars, and the two lens barrels 2 and 2 that directly intersect with the guides 3 do not interfere with the optical action and are in a sliding state. So as to be parallel to the guides 3 and 3 from the opposing outer peripheral surfaces of the respective lens barrels 2 and 2 which are installed in parallel, that is, the respective light beams of both the lens barrels 2 and 2 are arranged. The racks 4 and 4 are configured to project in a direction orthogonal to the axis, and rack teeth 4a and 4a are formed on the facing surfaces of the racks 4 and 4, respectively.

Each of the rack teeth 4a, 4a facing each other in the racks 4, 4 is engaged with one pinion 5, the pinion shaft 5a of the pinion 5 is pivotally supported, and the casing 1 is penetrated. Then, the pinion 5 is formed so as to be rotatable at a fixed position by being installed so as to project outside the casing 1.

The pinion shaft 5a protruding from the outer surface of the casing 1 is provided with a plate-shaped friction sheet 7 made of a material having a large friction coefficient, such as leather, felt, rubber, synthetic resin, or a composite material thereof. Of the pinion shaft so that one surface of the spring plate 8 is brought into contact with the outer surface of the casing 1, and further, the spring plate 8 having a substantially mountain-shaped cross section can be brought into contact with the outer surface of the friction seat 7 at its low end. 5a, and further, the operation knob 6 is engaged with the pinion shaft 5a so as to cover the central portion of the outer surface of the spring plate 8, and the operation knob 6 and the pinion shaft 5a are fixed by the screw 6a, and The friction sheet 7 and the spring plate 8 provided with the intermediate layer are combined with each other by applying a pressure contact action. The cover plate 10 is fitted on the outer surface of the operation knob 6.

In the binoculars of the present invention as described above, the lens barrel 2 used has substantially the same structure as the lens barrel structure in the normal binoculars. That is, reference numeral 20 is an objective lens, 21 is an eyepiece lens, 22 is a prism for converting an image upright, and a visible frame 9 for composition setting is optically imaged in the telescopic field disclosed in FIG. Is.

Further, in the casing 1, reference numeral 23 denotes an entrance hole, which is opened in a substantially oval shape slightly larger in the lateral direction than the entrance diameter of the lens barrel 2. Further, reference numeral 24 denotes a lens barrel eyepiece projecting hole.

As described above, according to the present invention, both of the lens barrels 2 and 2 simultaneously move the same distance by the gap adjusting means between the optical axes of the two lens barrels 2 and 2 parallel to each other in the casing 1. In this way, the operation knob 6 is configured to be linked simultaneously by the rotation operation of one operation knob 6, and the rack 4 and pinion 5 system is adopted as the means for continuous operation, and the operation knob 6 is fixed to the pinion shaft 5a. However, when using these binoculars continuously, there is no need to readjust the gap between the optical axes of the two parallel lens barrels 2, 2; rather, once adjusted, it remains unchanged until the user changes. Since it is desirable to continue to maintain, the pinion 5 is prevented from rotating spontaneously except during operation.

As the immobility maintaining means, the structure described above is used to achieve the intended effect by interposing a resistor between the casing 1 and the operating knob 6 by means of a friction seed 7 and a spring plate 8.

[0020]

[Effect of the invention]

 As described above, according to the present invention, one pinion is meshed with each rack formed so as to project from both lens barrels to the gap adjusting means between the optical axes of the two lens barrels parallel to each other. It is possible to move the lens only in the lateral direction and at the same time at the same time, and by operating the operating knobs mounted on the shaft of one pinion, both lens barrels are linked so that they can be brought into contact with each other. It has the effect of being adjustable with one hand.

In addition, by interposing a friction sheet and a resistor made up of a spring plate between one surface of the operation knob fixed to the pinion shaft and the outer surface of the casing, the optical axis between the two parallel lens barrels is increased. Once the gap adjustment is performed, the set gap form is maintained until the next operation, and there is the effect that changes due to natural movement cannot occur.

[Brief description of the drawings]

FIG. 1 is a plan view showing the inside of the binoculars casing of the present invention with the half body removed.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is an enlarged plan view of an operation knob with a cover plate removed.

FIG. 5 is an enlarged cross-sectional view for explaining a disassembled configuration of the operation knob.

FIG. 6 is a telescopic view through the binoculars of the present invention.

[Explanation of symbols]

 1 Casing 2 Lens barrel 3 Guide 4 Rack 4a Rack teeth 5 Pinion 5a Pinion shaft 6 Operation knob 6a Screw 7 Friction sheet 8 Spring plate 9 Visible frame for composition setting 10 Cloth plate 20 Objective lens 21 Eyepiece lens 22 Prism 23 Entrance hole 24 Eyepiece projection hole

Claims (2)

[Utility model registration claims] 1. A pair of left and right lens barrels 2, 2 arranged in a casing 1 of binoculars are slidable independently in opposite directions along at least two rows of guides 3 arranged in the transverse direction of these lens barrels 2. Racks 4 parallel to the guide 3 are provided on opposite sides of the lens barrels 2 so as to face each other at a predetermined interval, and a pinion is provided between the racks 4 and 4 of the left and right lens barrels 2 and 2. 5. A lateral slide type interpupillary adjustment mechanism for a binocular optical device, characterized in that a pinion 5 and an operation knob 6 on the outside of the casing 1 are integrally and rotatably connected to each other so that the pinion 5 can be freely rotated. 2. A pair of left and right lens barrels 2, 2 arranged in a casing 1 of binoculars are slidable independently in opposite directions along at least two rows of guides 3 arranged in the transverse direction of these lens barrels 2. Racks 4 parallel to the guide 3 are provided on opposite sides of the lens barrels 2 so as to face each other at a predetermined interval, and a pinion is provided between the racks 4 and 4 of the left and right lens barrels 2 and 2. 5, the operation knob 6 outside the casing 1 is integrally rotatably connected to the pinion 5, and the operation knob 6 is elastically moved from the outside of the casing 1 through the friction sheet 7 and the spring plate 8. Lateral slide type interpupillary adjustment mechanism for binocular optical equipment characterized by pressure contact.