JPS58184909A - Focusing device of binoculars - Google Patents

Abstract

PURPOSE:To obviate the change in the space between operating bodies and lens bodies even if the eye width changes by mounting a cam plate to a guide plate freely slidably and fixing right and left operating buttons to the front edge thereof so that when one button is depressed eyepiece lens barrel advances and when the other button is pushed the lens barrel retreats. CONSTITUTION:The user matches the eye width to the binoculars by opening right and left lens bodies 1, 1', brings the binoculars on the eye by holding the lens bodies with both hands or one hand, puts the fingertips on both or one of operating buttons 10, 10' and focuses the lenses by pressing the operating buttons. The projecting length of the buttons 10, 10' which are operating bodies from the bodies 1, 1' is irrelevant of the eye width and is determined unequivocally by the optical axis distance of eyepiece lenses. Therefore, if the optical axis distance between the eyepiece lenses and objective lenses is set at a standard distance when the projecting length of the buttons 10, 10' is the same, the focusing is possible simply by adjusting the buttons 10, 10' finely even if the eye width changes.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device □ for instantaneously adjusting the focus of binoculars.

A device that allows you to adjust the focus at once by placing your finger on the wing-shaped operating body of binoculars, such as the device disclosed in Japanese Utility Model Publication No. 53-460'29, is very convenient, but it is difficult to adjust the distance between the eyes.
When one of the castings is rotated around the central axis, the distance between the rotated mirror body and the end of the wing-like operating body on which the finger is applied also changes. Therefore, depending on the interpupillary distance, there is a problem in that the distance between the mirror and the end of the operating body on which the finger is applied becomes too wide, making it difficult to perform focus adjustment operations with the finger.

An object of the present invention is to provide a focus adjustment device for binoculars in which the distance between the operating body and the bell body does not change even if the interpupillary distance is changed.

In order to achieve the above object, the gist of the device of the present invention is that a central shaft is passed through upper and lower bearings that connect the upper and lower arms of the left and right iron bodies so as to be able to move up and down, and that the left and right eyepiece tubes are attached to the central shaft. It is mounted so that it can be raised and lowered integrally, and the left and right radially protruding bins are attached to its central axis so that they can be rotated in relative angles. Fit into the guide hole extending up and down the guide plate,
The left and right cam plates are attached to the left and right guide plates fixed to the left and right castings so that they can slide back and forth, and the left and right operation buttons are fixed to the front edge.When one button is lowered, the other button rises and comes into contact with the center shaft. The reason is that the eyepiece tube advances from the mirror body, and when the other button is pressed, the eyepiece tube retracts and enters.

The apparatus of the present invention will be explained based on the embodiment shown in the drawings.

As shown in Figure 1, left and right operation buttons 10.10 project outward from left and right bell bodies 1.1 of the binoculars, respectively.

The tip of the button 10.1o" has a concave surface 19 on which you can put your fingertip,
A 9° angle is formed.

When one of the buttons 10.10 is pressed down, the other button is raised and the left and right eyepiece tubes 2.21 are advanced from the left and right mirror bodies 1.1; conversely, when the other button is pressed, the eyepiece tubes 2.21 .2
° enters and exits.

As shown in Figure 8 and 2, the upper arms 4.
The lower arms 5.5 degrees of the lower arms are connected through upper bearings 6 and lower bearings 7 so as to be relatively rotatable, and the center 111 is connected to the upper and lower bearings.
3 can be slid up and down. A connecting shaft 8 is fixed to the upper end of the central shaft 3 protruding from the upper bearing 6, and the arms of the left and right eyepiece barrels are fitted to the connecting shaft so as to be relatively rotatable at 9.9 degrees. A cam pin 11 projecting in the radial direction is implanted on the central shaft 3, and the cam pin is fitted into an oblique cam hole 2 of a cam plate 13. Cam plate 13
Guide Th15. on the guide board 14. , - is slidably fitted, and the operating button 10 is integrally fixed to its edge. Information board 13
is fixed to the bell body l or the upper and lower arms 4.5 via screws 21 or the like. A guide hole 16 extending in the vertical direction is provided in the guide plate 14, and the tip of the cam bin 11 protruding from the cam hole 12 is fitted into the guide hole.

A collar 17 is rotatably fitted onto the central shaft 3, and a cam bin 11 is fitted into a circumferential slit 18 provided in the collar. The other radially extending cam bin 20 is implanted in the collar 17. The position of the cam bin 20 with respect to the central axis 3 is the same as that of the cam bin 11. Insert the cam bin 20 into the cam hole 12 of the cam plate 13, and insert the cam plate 13° into the guide 1 of the guide plate 14.
Slide it into s15. The tip of the cam bin 20 protruding from the cam hole 2 is inserted into the guide hole 1B in the vertical direction of the guide plate 14''. An operation button 10 is located on the edge of the cam plate 13.
" are fixed together, and the guide plate 14° is fixed to the lock l or its arms 4' and 5' via screws 21 etc.The left and right cam holes 12 and 12' have opposite inclinations, but can be operated Button 10.
10', the cam plate 13.13', the guide plate 14.14°, and the guide hole 16.16° are all symmetrical.Next, we will examine focus adjustment using the device of the present invention. First, open the left and right bells 1.1 of the binoculars, adjust the distance between your eyes, and hold the bells with both hands or one hand and place them on your eyes. Next, put your fingertips on both or one of the operating buttons 10.10 and press the operating buttons to focus. The device of the present invention includes:
Even if the optical axis distance between the eyepiece and objective lens is the same, the relative position between one unit and the operating body changes depending on the interpupillary distance, that is, the opening angle of the left and right mirrors with respect to the central axis. is different from the operation button 1O110 which is the operation object.
The protrusion length from the lock body 1.1" of ' is determined by the front axis distance between the eyepiece and the objective lens, regardless of the interpupillary distance. Therefore, when the protrusion length of the operation button 10.10 is the same, By setting the optical axis distance between the eyepiece and objective lens 7 to be the same, even if the interpupillary distance changes depending on the user,
By simply finely adjusting the operating buttons 10° and 10', it is possible to adjust the focus to suit each individual's eyes. In addition, in conventional binoculars, depending on the interpupillary distance, the end of the operating body on which the finger is placed is too far away from the mirror body, making it difficult to adjust the focus with the finger, but the operating button 10. body 1
．． Not only is it in a position where the fingers of the 1° hand can easily reach it, but the upper edge is also recessed so that it is easy to place the fingers.
Therefore, focus adjustment can be performed extremely easily regardless of the size of the interpupillary distance.

[Brief explanation of the drawing]

FIG. 1 is a top view of binoculars looking down on the device of one embodiment of the present invention, and FIG. 2 is an exploded perspective view of the essential parts of the binoculars shown in FIG. 1: 9 bodies 2: Eyepiece tube 3: Central axis 4.5
: ps6.7: @Uke 9: Arm 10: i-made button U: Cam bottle 12 = Cam hole 13: Cam plate
14: Inner plate 15: Guide groove 16: Guide hole
17: KA-18 Nislit 20: Kambin applicant Otsuka Optical Co., Ltd.

Claims (1)

[Scope of Claims] 1) The upper and lower arms of the left and right mirror bodies are mutually rotatably connected via upper and lower bearings, and a central shaft is passed through the upper and lower bearings so as to be vertically slidable. The arms of the left and right eyepiece tubes are connected to the upper end so that they can rotate together and can be raised and lowered integrally, and left and right cam bins that are concentric with the central axis and protrude in the radial direction are attached, and one of the left and right cam bins is rotated relative to the other. The left and right guide plates are fixed to the left and right cast bodies, vertical guide holes are formed in the guide plates, and the left and right cam bins are provided in the left and right cam plates so that mutually opposing forces' are provided. The cam plate was attached to the guide plate so as to be slidable back and forth, and an operation button was identified on the front edge of the cam plate. The focus adjustment lid of binoculars is characterized by: 2) Fix one cam bin to the center $1+, rotatably fit a collar to the central shaft, fix the other cam bin to the collar, and insert the one from the circumferential slit provided in the collar. A focus adjustment method for binoculars according to claim 1, characterized in that the cam bin is protruded, the guide plate is provided with a U-shaped guide groove extending back and forth, and a cam plate is provided in the guide groove. Cover. 3) The focus adjustment device for binocular stirrups as set forth in claim 71 or claim 2, characterized in that the upper end of the operation button is formed into a concave surface to make it easier to put a finger on it.