JP4704207B2 - Diopter correction finder aids - Google Patents

Description

  The present invention relates to a diopter correction finder auxiliary tool used by being connected to an eyepiece of a telescope, binoculars, a microscope, a camera, a surveying instrument, and other various optical devices, and more particularly to a diopter correction finder auxiliary tool for astigmatic eyes. .

Conventionally, there are diopter correction tools for myopic and hyperopic eyes in telescopes, binoculars, microscopes, cameras, surveying instruments, and other various optical devices. For example, in Japanese Utility Model Laid-Open No. 5-41271 (Patent Document 1), as a finder that enables diopter adjustment to a near-sighted eye or a far-sighted eye to be applied to a lens barrel opening of an optical device, an ocular lens is formed by a helical groove. A finder for moving and adjusting the lens in the optical axis direction is disclosed.
Japanese Utility Model Publication No. 5-41271

  As described above, there are diopter correction instruments for attaching a lens for a myopic eye or a hyperopic eye to a finder portion for various optical devices, but there is no diopter correction tool effective for astigmatic eyes. In an astigmatic eye, two types of myopia with different powers exist in one eye, so the intraocular focus position differs between the strong main meridian direction of the cornea and the lens and the weak main meridian direction perpendicular to it. The situation is happening. Therefore, the astigmatism correction needs to be focused so that each point becomes one point according to the front focal line and the rear focal line of each main meridian.

An object of the present invention is to provide a diopter correction finder auxiliary tool for astigmatic eyes that can be easily attached to various optical devices as they are or using a connection adapter.
Another object of the present invention is to easily change and set lenses having different powers according to the degree of myopia, hyperopia, and astigmatism of the optical device user. To provide a diopter correction finder auxiliary tool that can easily follow a lens focusing angle once set and can maintain the lens focusing angle even when the position and the vertical position frequently change.

The diopter correction finder assisting tool according to claim 1 of the present invention is such that the astigmatism correction lens sleeve (1), the angle adjustment rotary seat (10), and the click rotary seat (20) rotate in order from the eyepiece position. A diopter correction finder auxiliary tool that is movably engaged. The astigmatism correction lens sleeve (1) has an astigmatism correction lens (6) fixedly mounted therein, and an outer periphery of the astigmatism correction lens sleeve (1). The angle semi-fixing bolt (8) inserted in the angle semi-fixing ring groove (11) provided on the side is engaged with the angle adjusting rotary seat (10) opposite to the eyepiece side in a semi- fixed state, The angle adjusting rotary seat (10) is engaged with the click stop ring groove (21) of the click rotary seat (20) by a click stop bolt (12) screwed to the outer periphery thereof so that the click stop can be stopped at every 90 ° angle. Characterized by being combined .

  The diopter correction finder auxiliary tool according to claim 2 is a click rotary seat (1) according to claim 1, which is engaged by tightening a fixing bolt (13) screwed to the outer periphery of the opening of the angle adjusting rotary seat (10). 20) is fixed.

  The diopter correction finder auxiliary tool according to claim 3 is the diopter correction eyepiece according to claim 1 or 2, wherein the diopter correction eyepiece is formed on the outer periphery of the opening of the click rotation seat (20) by a screw portion (22) for connecting optical equipment. 30) is further added.

According to the present invention, it is possible to correct an astigmatism eye of an observer, and a diopter correction of a myopic eye or a hyperopic eye in various optical devices.
Further, even when the finder peeping posture is changed by 90 °, the proper astigmatism correction angle can be easily followed and maintained.
Furthermore, the diopter correction finder auxiliary tool of the present invention has a simple structure, can be easily attached to various optical devices directly or by using a connection adapter, and is easy to use.

<Embodiment 1>
FIG. 1 is an assembled sectional view showing a diopter correction finder auxiliary tool according to a first embodiment of the present invention.
As shown in FIG. 1, the diopter correction finder auxiliary tool A of Embodiment 1 rotates the astigmatism correction lens sleeve 1, the angle adjustment rotary seat 10, and the click rotary seat 20 in order from the upper eyepiece position in FIG. It is configured to engage freely.

The astigmatism correction lens sleeve 1 includes a cylindrical astigmatism correction lens sleeve body 1 a, and a rotation angle display ring 4 is fixed to the periphery of the eyepiece side opening by a ring fixing bolt 5.
An astigmatism correction lens 6 is fixedly attached to the inside of the astigmatism correction lens sleeve body 1 a by a lens fixing ring 7 through a spacer ring 3.
The astigmatism correction lens sleeve 1 is engaged in a semi-fixed state with the angle adjustment rotary seat 10 below by an angle semi-fixing bolt 8 screwed into the other end opening of the astigmatism correction lens sleeve body 1a.

  That is, an angle semi-fixing ring groove 11 is provided on the outer periphery of the eyepiece side opening of the angle adjusting rotary seat 10, and the tip of the angle semi-fixing bolt 8 of the astigmatism correction lens sleeve body 1a is the angle half-fixed. The astigmatism correction lens sleeve 1 is inserted into the fixing ring groove 11 and the angle adjustment rotary seat 10 below it is engaged in a semi-fixed state.

The angle adjusting rotary seat 10 is engaged with a click stop ring groove 21 of the click rotary seat 20 so as to be click-stopped every 90 ° by a click stop bolt 12 screwed on the outer periphery thereof.
Furthermore, the click rotation seat 20 can be fixed so as not to rotate with respect to the click rotation seat 20 as necessary. That is, the angle adjusting rotary seat 10 is screwed and tightened with a fixing bolt 13 (two diametrically opposed in FIG. 1) provided near the other end opening on the side opposite to the eyepiece side. Fixed to.
Further, a connection screw portion 22 is provided on the outer periphery of the click rotation seat 20 in the vicinity of the other end opening so that it can be screwed and connected to an eyepiece (not shown) of various optical devices.

Next, main components of the diopter correction finder auxiliary tool A according to the first embodiment of the present invention will be described in more detail with reference to FIGS.
FIG. 2 is a perspective view for explaining an assembly structure of components of the astigmatism correction lens sleeve 1. Each component is displayed separately in the optical axis direction (vertical direction in the drawing).

  As shown in FIG. 2, a ring set step 1b having a slightly smaller outer diameter is formed on the eyepiece side of the astigmatism correction lens sleeve body 1a, and the rotation angle display ring 4 is inserted into the ring set step 1b. Then, the ring fixing bolt 5 can be screwed from the side surface of the rotation angle display ring 4 to be fixed to the ring set step 1b. On the upper surface of the rotation angle display ring 4, angle scales 4a are drawn at equal intervals so that the rotation angle adjusted appropriately can be grasped.

  The astigmatism correction lens sleeve body 1a is provided with a stepped lens support 2 having a slightly larger inner diameter. The astigmatism correction lens 6 is set via the spacer ring 3, and the lens fixing ring 7 is screwed from the upper opening. By assembling, the astigmatism correction lens 6 can be fixed inside. At the upper part of the lens fixing ring 7, an attaching / detaching tool groove 7a, which is four grooves in the diameter direction, is provided. A tool for rotating the lens fixing ring 7 is brought into contact with the tool groove 7a, and the lens is exchanged by attaching / detaching. it can.

The angle semi-fixing bolt 8 screwed into the screw hole at the lower part of the astigmatism correcting lens sleeve body 1a has an internal structure as shown in FIG. That is, a hollow 8d is provided inside the angle semi-fixing bolt 8, and a spring 8a and a pressing mandrel 8b are inserted into the hollow 8d.
A semi-fixed blade 8c shaped like a blade of a flat-blade screwdriver is attached to the tip of the pressing mandrel 8b, and biased by a spring elasticity to the fine groove 14 at the bottom of the angle semi-fixed ring groove 11 on the outer periphery of the angle adjusting rotary seat 10. Has been.
In this way, the tip of the semi-fixed blade 8c bites into the concave portion of the fine groove 14, and a light rotational resistance is generated with respect to the rotation of the angle adjustment rotary seat 10. Therefore, the astigmatism correction lens sleeve body 1a is placed on the angle adjustment rotary seat 10. On the other hand, although it can rotate 360 °, once it stops, it does not rotate due to slippage due to vibration or the like unless it is operated lightly by hand.
Here, semi-fixed means adjusting the tightening of the angle semi-fixing bolt 8 (adjusting the biasing force of the spring 8a) to fix the astigmatism correcting lens sleeve 1 to the angle adjusting rotary seat 10 at an arbitrary angular position. The mechanism to do.

  FIG. 3 is a perspective view illustrating a schematic structure of the angle adjusting rotary seat 10. An angle semi-fixing ring groove for inserting and engaging the angle semi-fixing bolt 8 of the astigmatism correction lens sleeve body 1a shown in FIG. 2 on the outer periphery of the angle adjusting rotary seat 10 near the upper opening 10b. 11 is provided in a circumferential shape, and a plurality of fine grooves 14 are provided in the vertical direction at the bottom thereof.

A screw hole 10 a into which the click stop bolt 12 is screwed is provided on the outer periphery of the lower portion of the angle adjusting rotary seat 10.
FIG. 4B shows a cross-sectional structure of the click stopping bolt 12 screwed into the screw hole 10a (shown in FIG. 3). The inside of the click stopping bolt 12 is also provided with a cavity 12d, similar to the angle semi-fixing bolt 8 described above, and a spring 12a and a pressing mandrel 12b are inserted into the cavity 12d. A click ball 12c is attached to the tip of the pressing mandrel 12b, and is urged by a spring elastic force to the bottom of the click stop ring groove 21 on the outer periphery of the click rotation seat 20 shown in FIG. At the bottom of the click stop ring groove 21, four click holes 24 are provided at 90 ° angle intervals in the X direction and Y direction positions that intersect at right angles in FIG. 5.

  When the angle adjusting rotary seat 10 is rotated and the click ball 12c matches the position of the click hole 24, the click ball 12c is dropped into the hole, and the rotation of the angle adjusting rotary seat 10 is performed at that position by the biasing force of the spring 12a. Temporarily stopped. That is, since the angle adjusting rotary seat 10 is temporarily stopped every 90 ° rotation, a 90 ° change in the rotation angle can be easily felt. Since the click ball 12c is dropped into the hole, it is possible to prevent the angle-adjusting rotary seat 10 that has been stopped from rotating again due to vibration or the like.

FIG. 5 is a perspective view illustrating the structure of the click rotation seat 20. A click stop ring groove 21 for inserting and engaging the click stop bolt 12 of the angle adjusting rotary seat 10 is provided on the outer periphery of the click rotary seat 20 near the upper opening 20a. In the bottom of the groove, click holes 24 are provided at intervals of 90 °. As described above, a part of the click ball 12c shown in FIG. 4B is dropped into the click hole 24 and the rotation of the angle adjusting rotary seat 10 is stopped.
Further, as shown in FIG. 5, two bolt insertion holes 23 are provided in the lower portion of the outer periphery of the click rotation seat 20 at positions facing each other in the diameter direction (Z direction). The bolt 13 shown in FIG. 3 can be screwed into the bolt insertion hole 23 to fix the angle adjusting rotary seat 10 so as not to rotate with respect to the click rotary seat 20 as necessary.

  FIG. 6 is a cross-sectional view illustrating a state in which the diopter correction finder auxiliary tool A according to the first embodiment is attached to the eyepiece of the optical device 50. If the eyepiece of the optical device 50 has a finder connection threading portion having the same diameter as the diopter correction finder auxiliary tool A of the first embodiment, the connection screw portion 22 of the click rotation seat 20 is screwed as it is. However, if there is no threaded portion for connection, it is attached to the optical device 50 via the connection adapter 40 shown in FIG. The connection adapter 40 is provided with a fixing bolt 41 for fixing to the optical device 50. Even if the outer diameter of the eyepiece portion of the optical device 50 is different from the inner diameter of the connection adapter 40, the fixing bolt 41 is screwed. By adjusting the allowance, the connection can be securely fixed. The connection adapter 40 can be applied to various optical devices 50 by preparing several sizes.

Next, a case where the diopter correction finder auxiliary tool of the present invention is used by being connected to a camera which is the optical device 50 will be described. First, the click rotation seat 20 is directly attached to the finder of the camera or attached via the connection adapter 40 by adjusting the attachment angle of the connection adapter. When the camera is held in a horizontal composition (horizontal direction) that is a normal use posture, the direction (XX or YY) connecting the pair of click holes 24 facing in the diametrical direction is horizontal. Therefore, the direction connecting the other pair (YY or XX) is vertical (see FIG. 5). In this state, the astigmatism correction lens sleeve 1 is rotated by looking through the viewfinder and set to an appropriate astigmatism correction angle of the user.
When the camera is changed from a horizontal composition to a vertical composition (longitudinal direction), the appropriate astigmatism correction angle of the user can be easily adjusted by grasping the angle adjusting rotary seat 10 and rotating the click position by 90 °. .
When using again in the horizontal composition, the angle adjusting rotary seat 10 can be grasped and rotated 90 ° to easily return to the original position.

<Embodiment 2>
FIG. 7 is an assembled cross-sectional view showing the diopter correction finder auxiliary tool according to the second embodiment of the present invention. As shown in FIG. 7, most of the diopter correction finder auxiliary tool B of the second embodiment is the same as the diopter correction finder auxiliary tool A of the second embodiment, but below the click rotation seat 20. Further, it is different in that the diopter correction eyepiece 30 is rotatably engaged.
The diopter correction eyepiece incorporates a nearsighted eye lens, a farsighted eye lens, and the like. In addition to the correction by the astigmatism correction lens 6 in the astigmatism correction lens sleeve 1, optics for myopia, hyperopia, and binocular use of perspective eyes Improvement of the binocular vision function using the prism lens in the apparatus can be performed at the same time.

FIG. 8 is a perspective view illustrating the structure of the diopter correction eyepiece 30. A connection female screw portion 31 for connecting to the connection screw portion 22 of the click rotation seat 20 (see FIG. 7) is provided in the opening on the eyepiece side above the diopter correction eyepiece 30.
A diopter correction lens 33 (correction lens for nearsightedness, farsightedness, etc.) sealed by an O-ring 32 is incorporated in the body of the diopter correction eyepiece 30.
On the other hand, on the outer periphery of the body of the diopter correction eyepiece 30, the angle semi-fixing ring groove 11 (see FIG. 3) provided on the outer periphery of the angle adjusting rotary seat 10 (see FIG. 7) and the angle semi-fixing of the same shape. An annular groove 35 is provided.
Further, the click rotation seat 20 can be omitted by providing the click hole 24 as shown in FIG. 5 in the ring groove 35 for semi-fixing the angle and directly engaging the astigmatism correction lens sleeve 1a.

  The above description is merely an example of the embodiment for explaining the diopter correction finder auxiliary tool of the present invention. The present invention is a diopter correction finder auxiliary tool in which an astigmatism correction lens sleeve, an angle adjustment rotation seat, and a click rotation seat are each rotatably engaged in order from the top, the astigmatism correction lens sleeve, The astigmatism correction lens is fixedly mounted inside, and the angle adjustment rotary seat below it is semi-fixed by the angle semi-fixation bolt inserted into the angle semi-fixation ring groove provided on the outer periphery of the astigmatism correction lens sleeve. The engaged and angle-adjusting rotary seat is engaged so that the click stop ring groove of the click rotary seat can be click-stopped every 90 ° by a click stop bolt screwed to the outer periphery thereof. And Therefore, it is within the technical scope of the present invention to make various changes, modifications, or additions of the above-described embodiments in accordance with the technical idea or principle of the present invention. For example, the diopter correction finder auxiliary tool of the present invention is also applied to an optical apparatus using a prism instead of a lens when the eyepiece is binocular or a lens. Further, it can be applied to a flat lens, a deflection filter, or the like instead of the astigmatism correction lens.

According to the diopter correction finder auxiliary tool of the present invention, it is possible to easily correct the astigmatism of the user in various optical devices. In addition, diopter correction for myopic or hyperopic eyes can also be simplified.
Furthermore, even when the finder peeping posture is changed by 90 °, the appropriate astigmatism correction angle can be easily followed and maintained.
Furthermore, the diopter correction finder auxiliary tool of the present invention has a simple structure and can be easily attached directly to various optical devices or by using a connection adapter.

FIG. 3 is an assembled configuration sectional view of the diopter correction finder auxiliary tool A according to the first embodiment. 3 is a perspective view illustrating the structure of an astigmatism correction lens sleeve according to Embodiment 1. FIG. FIG. 3 is a perspective view illustrating the structure of the angle adjusting rotary seat according to the first embodiment. FIG. 3 is a cross-sectional view of the angle semi-fixing bolt and the click stop bolt according to the first embodiment. FIG. 3 is a perspective view illustrating the structure of the click rotation seat of the first embodiment. FIG. 3 is a connection configuration cross-sectional view of the diopter correction finder auxiliary tool A and the optical device according to the first embodiment. FIG. 10 is a connection cross-sectional view of a diopter correction finder auxiliary tool B and an optical device according to a second embodiment. 10 is a perspective view of a diopter correction eyepiece in the diopter correction finder auxiliary tool B of Embodiment 2. FIG.

Explanation of symbols

A: Diopter correction finder auxiliary tool B according to the first embodiment B: Diopter correction finder auxiliary tool 1 according to the second embodiment ... Astigmatism correction lens sleeve 1a ... Astigmatism correction lens sleeve body 1b -Ring set step 2 ... Lens support 3 ... Spacer ring 4 ... Rotation angle display ring 4a ... Angle scale 5 ... Ring fixing bolt 6 ... Astigmatism correction lens 7 Lens fixing ring 7a ... Detachable tool groove 8 ... Angle semi-fixing bolt 8a ... Spring 8b ... Pressing mandrel 8c ... Semi-fixing blade 8d ... Cavity 10 ... Angle adjustment Rotating seat 10a ... Screw hole 10b ... Upper opening 11 ... Angle semi-fixed ring groove 12 ... Click stop bolt 12a ... Spring 12b ... Pressing mandrel 12c ... Click ball 12 ... Cavity 13 ... Fixing bolt 14 ... Fine groove 20 ... Click rotation seat 20a ... Upper opening 21 ... Click stop ring groove 22 ... Connection screw part 23 ... Insertion Hole 24 ... Click hole 30 ... Diopter correction eyepiece 31 ... Connection female screw part 32 ... O-ring 33 ... Diopter correction lens 34 ... Connection screw part 35 ... Angle Ring groove 40 for semi-fixation ... Connection adapter 41 ... Fixing bolt 50 ... Optical instrument

Claims (3)

A diopter correction finder auxiliary tool in which an astigmatism correction lens sleeve (1), an angle adjustment rotary seat (10), and a click rotary seat (20) are respectively rotatably engaged in order from the eyepiece position ,
The astigmatism correction lens sleeve (1) has an astigmatism correction lens (6) fixedly mounted therein, and is inserted into an angle semi-fixing ring groove (11) provided on the outer periphery of the astigmatism correction lens sleeve (1). The angle adjusting rotary seat (10) opposite to the eyepiece side is engaged with the angle semi-fixing bolt (8) in a semi- fixed state,
The angle adjusting rotary seat (10) can be clicked and stopped every 90 ° in the click stop ring groove (21) of the click rotary seat (20) by a click stop bolt (12) screwed to the outer periphery thereof. A diopter correction finder auxiliary tool characterized by being engaged. Diopter correction according to claim 1, characterized in that the click rotary seat (20) to be engaged is fixed by tightening a fixing bolt (13) screwed onto the outer periphery of the opening of the angle adjusting rotary seat (10). Finder aids. The diopter according to claim 1 or 2, wherein a diopter correcting eyepiece (30) is further added to an outer periphery of the opening of the click rotation seat (20) by a screw portion (22) for connecting an optical device. Correction finder aids.

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