KR810001298Y1 - Optical adjustment kanob with spaced apart platforms - Google Patents

Abstract

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Description

Binoculars Focal Length Adjuster

1 is a plan view of the binoculars according to the present invention.

2 is a cross-sectional view taken along the line 2-2 of FIG.

3 is a plan view of the hinge pin.

4 is a perspective view of an adjustment knob.

5 is a cross-sectional view taken along the line 5-5 of FIG.

6 is a perspective view of another example of the adjustment knob.

FIG. 7 is a sectional view similar to FIG. 5 showing another example of the adjustment knob. FIG.

The present invention relates to a focal length controller for binoculars.

Conventional binoculars focus on objects at different distances by rotating a circular knob or a focus wheel to adjust the position of the eyepiece until the magnified image is clearly visible. Many users find it difficult to adjust because the focus adjustment knob is slow and inconvenient to operate, and sometimes the hand has to be moved from the normal grip position to rotate the knob.

Since the human eye has a unique tendency to focus on a slightly different point of focus, it is also difficult to focus precisely with a single adjustment. This action is caused by involuntary modification of the aqueous body of the eye to clarify the injuries on the retina. The lens is slow to focus and accurate adjustments are often only possible when the binoculars are removed from the eye and put back on.

These problems are described in more detail in US Pat. No. 3,540,792, the disclosure of which is incorporated herein by reference. The solution presented in this patent is the rotational installation of a single stroke focusing ring on one of the eyepiece lances.

The inventors have found that binocular users can use the two-fingered fingertips to adjust the focusing mechanism with the opposite force of the two-handed fingers. One finger presses the force in one direction to move the adjustment knob, and the other hand applies the opposite force to adjust the magnification so that it is not excessive.

When the adjustment knob passes the clear focal position, the control knob returns the control knob to the correct position immediately with the fingers of the other hand, without having to alter the grip position of the hand. Those skilled in the adjustment of optics find it convenient to control by these opposing forces. This is because a clear focus can be obtained only by repeating several focusing operations in order to meet the standard at the time of correct adjustment.

The binoculars described herein utilize a focusing knob located at the center thereof, which is different from the conventional center focusing wheel in many respects. First, the knob is coupled to the eyepiece by a tilting cam or similar means of moving the eyepiece to a sufficient focusing range with relatively small movement. Secondly, the top of the adjustment knob is generally flat and extends laterally, such that a pedal or seasaw type with platform surfaces that come at the tip of the user's fingertips when viewed in hand as usual. Form a "rocking" knob. Since these surfaces are on opposite sides of the knob's axis of rotation, the fingertip movement is reversed during the focal length adjustment operation and is completely vertical and can be accurately focused without losing the firmness of the hand holding the binoculars. In another form, the platform surfaces the fingers touched were arranged parallel to the sides of the tab extending radially from the axis of rotation of the knob.

In short, the present invention relates to an improved optical control knob having a flat pair of platforms arranged to move the optical member in the telescope by rotating the knob in the opposite direction vertically and vertically with both fingers. In one form, the adjustment knob is coupled to a binocular with a pair of known monocular telescopes fixed by a telescope and connected by a frame with brackets centered by hinge pins. The control knob has a hub that is pivotally mounted on the frame between the two telescopes, and also forms a pair of flats that are horizontally held when the control knob is in the center and the binoculars are in the normal viewing position. It has a finger ground. These platforms can rotate the adjustment knobs on opposite sides of the rotating side of the hub by moving the fingers placed on both platforms in the opposite direction of the vertical direction. The adjusting knob is connected to a movable optical focal length adjusting element such as a lens in the telescope by connecting means such as a bridge member and a pin.

In addition, the connecting means has inclined cam means connected between the bridge pin and the knob to move the movable lenses to a sufficient range by a short rotational stroke of the adjusting knob. In a preferred form, the cam means has a cam pin extending radially from and fixed to the pin through the lateral slot of the hinge pin and the cam slot of the adjusting knob, the cam slot being adjustable It extends to the outer surface of the knob so that the campin can be accessed from the outside during binocular assembly or use.

When the present invention is described in detail according to the accompanying drawings as follows.

A prismatic binocular 10 is shown in FIG. 1, the structure of which is generally known except for the focusing mechanism described below. The binocular 10 is composed of a monocular prism telescope 11 having an objective lens barrel 12 and an eyepiece barrel 13 provided at both ends of the central body portion 14, which support a normal prism (not shown). The path of light rays passing through the telescope is shown by dashed line 15, which forms the optical axis of the objective and the eyepiece.

One of the eyepiece barrels is the eyepiece focusing ring 16, which is used to correct the difference in vision between the user's eyes. The binocular lens barrel 13 is installed in a known manner so as to be able to move axially with respect to the central body portion 14 for focus adjustment, and the eyepiece barrels are connected to each other by a known bridge member 17 hinged at the center portion. It moves simultaneously during focusing. The central body portion 14 is also connected by a known bracket 18 hinged at the center portion. Because these linking members hinge at the center, the telescopes can move closer or further away from each other to match the distance between the pupils.

In Figures 2 and 3, the inner end of each bracket 18 is perforated to receive a hollow cylindrical hinge pin 21. The pin 21 is located between the objective lens barrels in the front end, and has a screw groove formed therein to accommodate the retaining screw 22 having a flange 23 supported on the front bracket 18. The rear end of the pin 21 has an inclined portion 24 accommodated in an inclined hole passing through each of the rear brackets 18. The rear end of the pin 21 also has a flange 25 which is supported on the rear side of the rear bracket 18 and extends radially.

The flange 25 has a threaded groove formed therein so that the cover 29 can be screwed in. The flange 25 also has a slot 30 which receives the support pin 31 fixed to one side of the rear bracket 18 and extends in a radial direction. A linear slot 32 extending in the axial direction is formed through the wall at the center of the pin 21, and is opened through the pin to the cylindrical inner hole 33.

The eyepiece red bridge member 17 is slidably coupled to the hinge pin 21 by a bridge pin 37 which extends through the central opening of the cover 29 and is fitted into the hole 33 of the hinge pin 21. The rear end of the bridge pin 37 has a small diameter and extends into the circular opening of the bridge member. The bridge pin and the bridge member are attached to each other by retaining screws 42.

The focus adjusting knob 46 (first, second, fourth and fifth degrees) is preferably molded three-dimensionally from plastic, but may be made of metal. Adjustment knob 46 has a central hub 47 located between the central body parts 14 of the telescope. The central cylindrical hole 48 extends through the hub to accommodate the hinge pin 21 as shown in FIG. An annular recess 49 is formed on the rear surface of the hub around the hole 48 to accommodate the front end of the inclined portion 24 of the hinge pin. An annular boss 50 (FIG. 2) is integrally formed on the rear face of the hub 47 adjacent to the recess 49, which in turn supports the support surface for the knob when the knob is rotated with respect to the rear bracket 18. to provide.

An annular corrugated spring 53 is installed between the front end of the hub 47 and the front bracket 18, which spring is located in the recess 54 in the front of the hub. The spring 53 closely contacts the boss 50 toward the rear bracket 18 and increases the torsional resistance of the hub 47 against rotation on the hinge pin 21. Such frictional braking is important in ensuring that binocular focusing is not impeded when the eyepiece is in close contact with the user's eyes.

The top surface of the knob extends laterally, forming a pair of platforms 55 and 56 joined by a flat central portion 57. The upper surfaces of the platforms 55 and 56 are preferably provided with a plurality of ribs 58 extending in the axial direction for good contact with the user's fingers. The top surface of the knob is generally flat, but it is better to be slightly concave when viewed in the axial direction for better finger grounding and appearance.

The cam slot 60 has a knob inclined at an angle of about 40 degrees with respect to the rotation axis, and extends from the upper surface of the center portion 57 into the hole 48 of the hub. The cam pin 61 (FIG. 2) has a cylindrical upper surface, and its lower end with a threaded groove is accommodated in the screw hole 62 close to the front end of the bridge pin 37. The cylindrical body portion of the cam pin extends upwardly through slot 32 in the hinge pin and is axially movable within the slot. This cam-pin body portion also extends upwards into cam slot 60 of knob 46. The upper end of the cam pin is recessed to accommodate the screw driver. A decorative longitudinal cover plate 64 is fixed in the engaging recess in the upper surface of the center portion 57 of the adjusting knob, so that the cam pin and the cam slot are covered after assembling the binoculars.

In use, the user holds the telescope body 14 with both left and right hands to hold the binoculars in the usual manner. If focus adjustment is required, place the fingertips on platforms 55 and 56 and press down on one side of the platform to rotate the adjustment knob. A finger placed on the other platform can provide a slight resistance to upward movement of this platform when the adjustment knob is rotated so that the focusing adjustment can be made smoothly but quickly. If the use has passed the correct focus, the adjustment knob can simply be reversed by applying downward force to the other platform.

The hub 47 of the knob can rotate, but the action perceived by the user's finger when viewing the binoculars in the normal horizontal observation position is completely straight and vertical (as indicated by arrow 66 in FIG. 5).

The inventors found that this action is natural and convenient for the majority of binoculars users, and that the binoculars can be quickly and accurately focused without any inconvenience while holding the binoculars firmly with both hands.

When the knob knob is rotated by the complete vertical movement of the user's finger, the cam pin 61 moves along the cam slto 60, thus the bridge pin 37 moves axially within the hinge pin 21. The movement of such bridge pins is transmitted to the bridge member 17, which imparts axial movement to the eyepieces. Rapid single stroke focusing is achieved by inclining cam slot 60 with respect to the axis of rotation of the adjusting knob. If the angle of rotation of the adjusting knob is about 40 degrees, about 3/16 inch (about 4.8 mm) over the entire focusing range. It is enough to move the eyepieces in the axial direction.

The main advantage of this structure is that the assembly of binoculars is quick and easy, and the speed of disassembly during repair is also fast. The binoculars of the present invention are assembled by inserting a pinch 21 through bracket 18 and knob 46 to hinge the two monocular telescopes. The hinge pin is positioned so that the slot 32 is in the proper rotational position by placing the pin 31 in the slot 30. This hinge pin is held in place by a retaining screw 22 and a cover 29 is installed.

Next, the braze pin 37 is connected to the bridge member 17 as in FIG. 2 and the briffin is held in the hole 33 of the hinge pin so that the screw hole 62 is positioned below the slot 32 and the cam slot 60. Next, a cam pin 61 is installed through slots 32 and 60 and screwed into the screw hole 62. Install cover plate 64 in place to complete the assembly operation. The cam slot 60 extends up to the top of the adjusting knob, allowing easy access to the cam pins, allowing simple removal of the cover plate 64, making it easy to assemble and disassemble the binoculars without the need for special jigs or fixtures.

The present invention can also be used in the form of a 70-speed quick action adjusting knob shown in FIGS. 6-7. The adjusting knob 70 has a hub 47A that substantially corresponds to the hub 47. The only difference is that the cam slot 60A and the cover plate 64A are installed lower than the upper surface of the hub. Tab 71 extends radially from the hub, the opposing sides of the tab forming a pair of parallel planar platforms 55A and 56A. As shown by arrow 66A in FIG. 7, these platforms are in contact with both fingers when the binoculars are held in the normal way, and the knobs are rotated in one direction by the straight and opposite motion of the finger, thus providing quick and accurate focusing. It can be done in a short time.

In the above, the center-focused binoculars which can adjust a focus accurately and quickly by convenient vertical movement of a user's finger were described. Telescopes used in the binoculars are conventional, and the novel central hinge and focusing cam mechanism may be readily employed in many different types of binoculars. The cam mechanism may also be used to adjust the magnification in “zoom” binoculars by coupling the bridge member to the appropriate optical members in each telescope. Similarly, the above-described regulator knobs are useful for adjusting movable optical members of monocular instruments such as observation telescopes and the like.

Claims (1)

It consists of a body part 14 and the 1st and 2nd telescopes which respectively consist of the eyepiece barrel 13 which is movable with respect to the body part, and it mounts so that it may pivot about a hinge pin 21 and its hinge pin. A connecting member made of a bracket 18 is installed on the body to connect the first and second telescopes to each other, and an adjusting knob 46 is rotated on the hinge pin 21 between the body parts. In the binoculars provided, the coupling means consisting of a hinged bridge member 17 for connecting the optical members to each other and a bridge pin 37 attached to the bridge member is connected to connect the knob to the optical member. A hub portion 47 coupled to the hinge pin so that the knob 46 rotates about the longitudinal axis of the hinge pin 21, and first and second finger contacts 55 and 56 formed on the upper surface of the hub portion. ) And a cam slot 60 inclined with respect to the axis of rotation of the knob, Binoculars focal distance regulator, characterized in that it is mounted on the cam pins 61, the pin bridge 37 to the bridge to drive the pin in response to rotation of the knob to engage with the slotted cam.