JP2012203155A - Variable power sighting telescope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel variable power sighting telescope which can provide high magnification though having a limited size.SOLUTION: An erect inner cylinder 5 is provided in a lens barrel body 1, and a variable power erecting lens system 4 which is guided by a moving screw 8 to linearly move forward and backward is provided in a linear long hole 7 which is formed on the erect inner cylinder 5 and is parallel with an optical axis, and a power varying cam cylinder 9 turning relative to the erect inner cylinder 5 is provided on the outside of the erect inner cylinder 5. An oblique cam long hole 10 in a direction crossing the linear long hole 7 is provided on the power varying cam cylinder 9, and the moving screw 8 is inserted into the oblique cam long hole 10, and the power varying cam cylinder 9 is turned by elastic force of a coil spring 14 built in the sighting telescope, whereby the variable power erecting lens system 4 is linearly moved from a front position for low magnification to a rear position for high magnification by action of the oblique cam long hole 10 on the moving screw.

Description

  The present invention relates to a variable sighting telescope used by being mounted on a gun.

  In an aiming telescope, it is difficult to find a target with a narrow field of view with high magnification. On the other hand, if a wide field of view with low magnification is used, it is easy to find a target. When shooting a target with a gun, it is preferable to increase the hit rate by shooting with a zoom lens having a high magnification. However, it is difficult to find a target with a high zoom lens magnification. Therefore, it would be advantageous if the target can be found in a state where the zoom lens has a low magnification that is easy for the target to find, and can be shot at a high magnification instantly while the target is found.

  A zoom device that simply switches between a wide field of view with a low magnification and a narrow field of view with a high magnification is known (for example, Patent Document 1).

  However, in the prior art of Patent Document 1, a variable power lens is provided between the objective lens and the imaging lens, the variable power lens is held by a lens holder, the lens holder is attached to an arm, and the arm is driven. The lens holder is moved on the guide rail in a direction along the optical axis so as to be able to advance and retreat.

  That is, there is a problem that a driving means must be provided separately from the lens system.

  In view of this problem, the applicant has developed and proposed a zooming device in which a zoom lens is built in the aiming telescope, and a winding spring is built in the aiming telescope, and the zoom lens is operated by the elasticity of this winding spring ( For example, Patent Document 2).

JP 2008-256782 A JP 2010-249895 A

  In the above-mentioned Patent Document 1, there is a problem that a driving means must be provided separately from the lens system as described above.

  Moreover, in the said patent document 2, since a zoom lens is incorporated in the limited size of an aiming telescope, there exists a subject that it is quite difficult to obtain the aiming telescope which can be made into high magnification.

  The present invention does not provide a separate driving means as in the above-mentioned Patent Document 1, and a winding spring is built in the aiming telescope as in Patent Document 2, so that even a sighting telescope of a limited size has a high magnification. A novel variable sighting telescope is provided.

  For this purpose, the zoom sighting telescope of the present invention is provided with an upright inner cylinder in the lens barrel body, and linearly moves back and forth by a guide of a moving screw in a linear elongated hole formed in the upright inner cylinder parallel to the optical axis. A variable magnification erecting lens system is provided, and a variable magnification cam cylinder that rotates relative to the erect inner cylinder is provided outside the erect inner cylinder, and the direction in which the variable magnification cam cylinder intersects the linear elongated hole is provided. Of the slant cam slot, the above-mentioned moving screw is inserted into this slant cam slot, the above-mentioned variable cam barrel is rotated by the elasticity of the winding spring incorporated in the aiming telescope, The zoom lens erecting lens system is linearly moved from the low magnification front position to the high magnification rear position by the action of the above.

  In the zoom sighting telescope of the present invention, an eyepiece lever member is fixed to the lens barrel body, and a zooming ring is rotatably provided on the outer side of the eyepiece collar member. Between the magnification ring and the eyepiece jumper member A spring is provided on the eyepiece, and a long hole for determining the rotation range of the zooming cam cylinder is formed in the eyepiece collar member. An inward zooming screw is provided in the zooming ring, and the zooming screw passes through the slot. The tip of the zooming screw is engaged with the engagement hole formed in the zooming cam cylinder, and the zooming ring is rotated within the range in which the zooming screw moves within the long hole by the elasticity of the winding spring. It is characterized by.

  Further, the zoom sighting telescope of the present invention is provided with a zoom pin having a protrusion tendency by a spring elasticity on the eyepiece jumper member, and an engagement receiver for receiving the zoom pin in the zoom ring. The engagement between the zoom pin and the engagement receiver is released by a pushing action, and the rotation of the zoom ring is started.

  The variable power aiming telescope of the present invention is characterized in that the low magnification is 1.0 and the high magnification is 10 times.

  The zoom sighting telescope of the present invention is provided with an upright inner cylinder in the barrel main body, and a linearly moving long hole parallel to the optical axis formed in the upright inner cylinder is moved back and forth linearly by the guide of a moving screw. A double erecting lens system is provided, and a variable magnification cam cylinder that rotates with respect to the erect inner cylinder is provided outside the erect inner cylinder, and the variable magnification cam cylinder is inclined in the direction intersecting the linear elongated hole. A cam slot is provided, the moving screw is inserted into the oblique cam slot, and the variable cam barrel is rotated by the elasticity of the winding spring incorporated in the aiming telescope. Since the variable magnification erecting lens system is linearly moved from the low magnification front position to the high magnification rear position, it is limited without providing driving means outside the lens system. A variable magnification sight that can scale from a low magnification to a high magnification even with a sighting telescope An effect can be obtained far mirror.

FIG. 2 is an overall view of a variable power aiming telescope according to the present invention, in which a main part is shown in cross section. It is sectional drawing which shows the detail of the variable magnification part of this invention variable sighting telescope. FIG. 5 is an enlarged cross-sectional view of a variable magnification ring portion of the variable magnification sighting telescope according to the present invention, showing a low magnification position. Similarly, in the enlarged cross-sectional view of the magnification ring portion, the state in which the magnification button is pressed in order to change the magnification to a high magnification is shown. Similarly, in the enlarged cross-sectional view of the variable magnification ring portion, the position of high magnification is shown. It is a figure which shows the relationship between an erect inner cylinder and a variable magnification cam cylinder, and the low magnification position is shown. Similarly, it is a diagram showing the relationship between the upright inner cylinder and the variable magnification cam cylinder, and shows a high magnification position.

  Details of the present invention will be described below with reference to embodiments shown in the drawings.

  In the figure, reference numeral 1 denotes a lens barrel body of the aiming telescope, and an objective lens system 2 is provided at the front end and an eyepiece lens system 3 is provided at the rear end. An erect inner cylinder 5 in which a variable power erecting lens system 4 is provided so as to be movable back and forth is fixed inside the intermediate body 1 of the lens barrel body 1. The upright inner cylinder 5 is fixed on the eyepiece system side of the barrel main body 1. The variable magnification erecting lens system 4 is incorporated in a variable magnification erecting lens frame 6, and the variable magnification erecting lens frame 6 is movable back and forth within the erecting inner cylinder 5.

  The erect inner cylinder 5 is provided with a linear elongated hole 7 parallel to the optical axis, and a moving screw 8 protruding from the variable magnification erecting lens frame 6 is inserted into the elongated linear hole 7. That is, the moving screw 8 is linearly guided into the straight elongated hole 7 so that the variable magnification erecting lens system 4 moves linearly back and forth within the erecting inner cylinder 5.

  A variable magnification cam cylinder 9 that rotates with respect to the upright inner cylinder 5 fixed on the outside of the upright inner cylinder 5 is provided, and the variable magnification cam cylinder 9 is provided with a straight elongated hole of the upright inner cylinder 5. 7 is provided with an oblique cam slot 10 in a direction intersecting with the axis 7, and the moving screw 8 is inserted into the oblique cam slot 10. That is, when the variable magnification cam cylinder 9 is rotated with respect to the upright inner cylinder 9, the moving screw 8 is linearly moved backward along the straight long hole 7 of the upright inner cylinder 5 by the cam action of the moving screw 8. The variable magnification erecting lens system 4 is linearly moved backward. A cam reinforcing ring 11 is provided at the rear end of the variable magnification cam cylinder 9.

  An eyepiece lever member 12 is fixed to the rear end of the lens barrel body 1, and a zooming ring 13 is provided on the outer side of the eyepiece lever member 12 so as to be rotatable with respect to the eyepiece lever member 12. A winding spring 14 is provided between the variable magnification ring 13 and the eyepiece collar member 12 so as to provide a rotational force for the variable magnification cam cylinder 9. That is, the winding spring 14 is incorporated in the aiming telescope, one end of which is connected and fixed to the zoom ring 13, and the other end is connected and fixed to the eyepiece jumper member 12.

  As shown in FIGS. 2 to 5, a cylindrical pin seat 15 having an open top is screwed and fixed to the eyepiece tabular member 12, and a projecting tendency is given to the pin seat 15 by the elasticity of the spring 16. The zooming pin 17 is provided so that the zooming pin 17 protrudes slightly from the surface of the eyepiece jumper member 12.

  On the other hand, the magnification changing ring 13 is provided with a magnification changing button 18 corresponding to the magnification changing pin 17. The magnification changing button 18 is vertically moved in a button seat 19 screwed to the magnification changing ring 13. The zooming pin 17 is pushed by pushing the zooming button 18.

  That is, the zoom pin 17 enters the button seat 19 in the protruding state and maintains the engaged state.

  An elastic force in a direction rotating in the direction indicated by an arrow in FIG. 4 is applied to the variable magnification ring 13 by a winding spring 14, and the variable magnification cam cylinder 9 is rotated by this rotational force. However, the engagement of the zooming pin 17 and the button seat 19 prevents the zooming ring 13 and the zooming cam barrel 9 from rotating, and the zooming erecting lens system 3 is held at the front end position.

  A magnification changing screw 20 is screwed inward and fixed to a position opposite to the magnification changing button 18 of the magnification changing ring 13, and a long hole 21 for determining a rotation range of the magnification changing cam cylinder 9 in the eyepiece tabular member 12. The variable magnification screw 20 is passed through the long hole 21, and the tip of the variable magnification screw 20 is locked in a locking hole formed in the cam reinforcing ring 11 and the variable magnification cam cylinder 9. The rotational power of the variable magnification ring 13 is transmitted to the variable magnification cam cylinder 9 via the variable magnification screw 20.

  1 to 4 and 6, the variable magnification erecting lens system 4 is at the front end position of the erecting inner cylinder 5 and has a wide field of view with low magnification. In the illustrated embodiment, the low magnification is 1.25 times.

  When the magnification button 18 is pushed from this state, the magnification pin 17 is pushed down against the elasticity of the spring 16 and the engagement with the button seat 19 is released. Therefore, the variable magnification ring 13 receiving the elasticity of the winding spring 14 is rotated in the direction of the arrow in FIG. Along with the rotation of the variable magnification ring 13, the variable magnification screw 20 screwed into the variable magnification ring 13 moves along the long hole 21 of the eyepiece collar member 12. The engaged variable power cam cylinder 9 rotates in the same direction.

  By the rotation of the magnification cam cylinder 9, the cam action of the oblique cam cylinder 10 provided on the magnification cam cylinder 9 acts on the moving screw 8, and this moving screw 8 is inserted into the straight elongated hole 7 of the upright inner cylinder 5. Move straight back along. As the moving screw 8 moves, the variable magnification erecting lens system 4 moves rearward in the erecting inner cylinder 5 to the state shown in FIGS. That is, the variable-magnification erecting lens system reaches the rear position indicated by the dotted line in FIGS. 1 and 2, and the field of view has a high magnification. In the embodiment of the present invention, the high magnification is 10 times, but in the design of the variable power erecting lens system, it can be made 8 times or 6 times, for example.

  To return from the high magnification to the low magnification, the magnification ring 13 is rotated in the direction of the arrow shown in FIG. 3, and the oblique cam slot 10 of the magnification cam cylinder 9 and the linear slot 7 of the upright inner cylinder 5 The variable power erecting lens system 4 is returned to the low magnification of the front end by the cam action with the moving screw 8.

DESCRIPTION OF SYMBOLS 1 Lens barrel body 2 Objective lens system 3 Eyepiece lens system 4 Variable magnification erecting lens system 5 Erecting inner cylinder 6 Variable magnification erecting lens frame 7 Straight elongated hole 8 Moving screw 9 Variable magnification cam cylinder 10 Oblique cam elongated hole 11 Cam Reinforcement ring 12 Eyepiece collar member 13 Scaling ring
14 Winding spring 15 Pin seat 16 Spring 17 Zooming pin 18 Zooming button 19 Button seat 20 Zooming screw 21 Long hole 22 Locking hole

Claims (4)

An erecting inner cylinder is provided in the lens barrel body, and a variable magnification erecting lens system that is moved back and forth linearly by the guide of a moving screw is provided in a linear elongated hole formed parallel to the optical axis formed in the erecting inner cylinder. A variable magnification cam cylinder that rotates with respect to the upright inner cylinder is provided on the outside of the vertical cylinder, and an oblique cam elongated hole is provided in the variable magnification cam cylinder in a direction crossing the linear elongated hole. The movable screw is inserted into the long hole, the variable magnification cam cylinder is rotated by the elasticity of the winding spring incorporated in the aiming telescope, and the variable magnification erecting lens system is lowered by the action of the oblique cam long hole on the movable screw. A zoom sighting telescope characterized by linearly moving from a front position of magnification to a rear position of high magnification. An eyepiece contact member is fixed to the lens barrel body, and a zooming ring is rotatably provided on the outside of the eyepiece contact member. A winding spring is provided between the zooming ring and the eyepiece contact member, A long hole that determines the rotation range of the variable magnification cam cylinder is formed, an inward variable magnification screw is provided in the variable magnification ring, and the variable magnification screw is passed through the elongated hole to vary the tip of the variable magnification screw. 2. The variable power ring according to claim 1, wherein the variable magnification ring is engaged with an engagement hole formed in the cam cylinder and the variable magnification ring is rotated within a range in which the variable magnification screw moves in the long hole by the elasticity of the winding spring. Variable magnification telescope. The eyepiece jumper member is provided with a magnification changing pin imparted with a projecting tendency by a spring elasticity, while a magnification receiving ring is provided with an engagement receiving for receiving the magnification changing pin, and the magnification changing button and the engagement receiving The variable power sighting telescope according to claim 1 or 2, characterized in that the engagement is released and the rotation of the variable magnification ring is activated. The variable power aiming telescope according to any one of claims 1 to 3, wherein the low magnification is 1.25 times and the high magnification is 10 times.

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