Rifle sight with integrated laser rangefinder and its optical axis synchronization adjustment method

Abstract

This invention provides a rifle scope integrating a laser rangefinder and a method for synchronously adjusting its optical axis. The rifle scope includes: a scope optical assembly whose aiming optical axis can be driven to swing to achieve ballistic compensation; a laser rangefinder module whose rangefinding optical axis is independent of the aiming optical axis; and a dual-optical-axis synchronous drive system, comprising: an operation input unit for receiving ballistic adjustment operations from a user; a first drive unit that, in response to the operation input unit, drives the scope optical assembly to deflect its aiming optical axis; and a second drive unit that, in response to the operation input unit, drives the laser rangefinder module to deflect its rangefinding optical axis. The first and second drive units are coupled through a preset transmission matching relationship, ensuring that the aiming optical axis and the rangefinding optical axis remain parallel during deflection. This invention, through mechanical synchronization design, ensures that the optical axes of the scope and the laser rangefinder automatically remain parallel under any ballistic compensation adjustment.

Description

Technical Field

[0001] This invention relates to the field of aiming technology, and in particular to a rifle aiming scope with an integrated laser rangefinder and a method for synchronously adjusting its optical axis. Background Technology

[0002] In the field of firearms shooting, to improve shooting accuracy, rifle scopes often need to be combined with rangefinding components so that users can quickly obtain the target distance and perform ballistic compensation, thereby achieving accurate shooting. Currently, there are three main ways to implement rangefinding functionality in rifle scopes: I. Mounting Structure of Stand-on Independent Laser Rangefinder like Figure 1 As shown, this solution involves fixing an independent laser rangefinder 1000 to the outside of a conventional rifle scope 2000 using a dedicated bracket 3000. The rifle scope 2000 and the laser rangefinder 1000 are independent devices, each using its own optical path system. They are physically combined only through a mechanical bracket, without any coordinated control or linkage structure. For example... Figure 3 As shown, during use, the optical axis 2100 of the rifle scope 2000 and the optical axis 1100 of the laser rangefinder 1000 are kept parallel through the initial installation calibration. The user needs to point the crosshairs of the rifle scope at the target and then complete the distance measurement by operating the laser rangefinder independently.

[0003] like Figure 5 As shown, the rifle scope 2000 requires frequent adjustments to its ballistic compensation adjuster based on factors such as shooting distance and environment during actual use. These adjustments directly cause the optical axis 2100 of the rifle scope 2000 to swing, while the optical axis 1100 of the laser rangefinder 1000 remains fixed on the bracket 3000. This results in the optical axes 2100 and 1100 of the rifle scope 2000 and laser rangefinder 1000 deviating from parallel. Consequently, the target pointed to by the crosshairs of the rifle scope 2000 is not the same as the target actually measured by the laser rangefinder 1000. To ensure accurate ranging, the ballistic compensation adjuster must be reset to its initial calibration position before each range measurement, a cumbersome operation that severely impacts shooting efficiency and causes significant inconvenience in practical applications. Furthermore, the bracket 3000 has insufficient stability; long-term use may lead to vibration, collisions, or other factors causing the laser rangefinder to loosen, further exacerbating the optical axis misalignment problem.

[0004] II. The rangefinding module structure built into the scope housing like Figure 2As shown, a laser rangefinder mounting cavity 5000 is directly formed on the housing 4000 of a conventional rifle scope, integrating the laser rangefinder module (not shown in the figure) into the cavity, simplifying the external structure. Unlike Scheme 1, in this scheme, the rifle scope and the laser rangefinder module share a control system, but their optical path systems remain independent, such as... Figure 4 As shown, during initial assembly, parallel calibration of the optical axes 4100 and 5100 of both is also required.

[0005] Its fundamental flaw is the same as that of Scheme 1: adjusting the ballistic compensation adjuster will disrupt the initial calibration's optical axis parallelism. For example... Figure 6 As shown, because the ranging module is fixed to the scope housing, its optical axis cannot swing synchronously with the operation of the ballistic compensation adjuster. When the scope's optical axis deflects due to ballistic compensation requirements, the center of the crosshairs deviates from the target being measured by the ranging module. Users still need to reset the ballistic compensation adjuster before ranging; otherwise, ranging accuracy cannot be guaranteed, resulting in poor usability. Furthermore, while the integrated design reduces external components, the built-in ranging module does not solve the optical axis linkage problem and increases the complexity of the housing structure, requiring higher assembly precision.

[0006] III. Built-in beam splitter structure in the optical path This solution abandons the idea of ​​an external or cavity-built independent ranging module. Instead, two sets of optical prisms are set between the objective lens and the first focal plane on the optical axis of the sight. One set is used to emit ranging lasers, and the other set is used to receive lasers reflected from the target. The ranging laser transceiver unit is arranged outside the field of view of the sight, thus realizing the fusion of the optical path of ranging and aiming functions.

[0007] However, this solution has a drawback: the addition of a beam splitter significantly reduces the system's light transmittance. The light transmittance of a rifle scope directly determines its observation performance in low-light environments (such as dusk, dawn, and dense forests). In this solution, the beam splitter causes significant light energy loss through refraction and reflection, resulting in insufficient brightness in the scope's field of view, blurred target imaging, and severely limiting the product's applicability in complex lighting conditions. Furthermore, the installation of the beam splitter requires modification of the scope's original optical path, potentially affecting its optical accuracy and mechanical stability, increasing the difficulty of product design and manufacturing.

[0008] In summary, none of the existing methods mentioned above can simultaneously meet the comprehensive requirements of ranging accuracy, ease of operation, and optical performance, making them unsuitable for the core demands of rapid ranging and precise aiming in actual combat. Therefore, the industry urgently needs an integrated rangefinder sight technology solution that can achieve synchronous linkage of the optical axis without affecting the optical performance of the sight and without requiring frequent recalibration. Summary of the Invention

[0009] In view of the background art, one object of the present invention is to provide a novel rifle scope with laser rangefinding function, which can keep the optical axis of the rifle scope parallel to the optical axis of the rangefinder regardless of how the ballistic compensation adjuster is adjusted to make the optical axis of the rifle scope swing, without requiring any changes to the optical path of the scope and without affecting the light transmittance.

[0010] To achieve the above objectives, the present invention adopts the following technical solution: A rifle scope integrating a laser rangefinder, comprising: The scope's optical assembly, whose aiming optical axis can be driven to swing to achieve ballistic compensation; the laser rangefinder module, whose rangefinding optical axis is independent of the aiming optical axis; and the dual-optical-axis synchronous drive system, which includes: an operation input unit for receiving the user's ballistic adjustment operation; The first drive unit, in response to the operation of the operation input unit, drives the sight optical assembly to deflect the aiming optical axis; The second drive unit, in response to the operation input unit, drives the laser ranging module to deflect the ranging optical axis; wherein, the first drive unit and the second drive unit are coupled through a preset transmission matching relationship, so that the aiming optical axis and the ranging optical axis remain parallel during the deflection process.

[0011] Furthermore, the aiming scope optical assembly includes an objective lens group, a focusing group, an image-establishing system that can swing around a fulcrum, and an eyepiece group arranged sequentially along the optical axis. The first driving unit acts on the image-establishing system to drive its swing.

[0012] Furthermore, the first drive unit includes a main shaft connected to the operation input unit and configured to generate axial movement during rotation to drive the sight optical assembly; the second drive unit includes a transmission assembly coupled to the main shaft, the transmission assembly being configured such that for every unit axial displacement generated by the main shaft, the transmission assembly generates a corresponding fixed unit displacement to drive the laser rangefinder module to swing.

[0013] Furthermore, the transmission assembly includes: A drive system support is fixedly installed and connected to the main shaft via a first threaded pair. The laser lifting ring rotates synchronously with the main shaft in the circumferential direction and is axially limited. The laser lifting platform is connected to the laser lifting ring via a second threaded pair and is constrained to move only axially; wherein, the axial movement of the laser lifting platform drives the laser ranging module to swing.

[0014] Furthermore, the preset transmission matching relationship is specifically as follows: the ratio of the pitch P1 of the first threaded pair to the pitch P2 of the second threaded pair satisfies: P1 / P2=(L1 / L2)(S1 / S0), where L1 is the equivalent focal length of the objective lens group and the focusing group, L2 is the swing arm length of the laser ranging unit, S1 is the distance from the swing fulcrum of the image erecting system to the first focal plane of the aiming lens, and S0 is the length of the driving force arm of the main shaft on the image erecting system.

[0015] Furthermore, the laser lifting platform cooperates with the drive system support through a limiting mechanism, which is configured to allow the laser lifting platform to move axially but restrict its circumferential rotation.

[0016] Furthermore, the laser ranging module is mounted on a universal swing assembly, which is configured to allow the laser ranging module to swing in both pitch and horizontal directions, and is connected to the output end of the second drive unit.

[0017] Furthermore, the omnidirectional swing assembly includes: a range-measuring pitch disk, rotatably connected to an integrated housing via a first rotating connection structure to achieve pitch swing; the integrated housing is fixedly connected to the scope barrel of the aiming scope body and is used to support at least a portion of the laser range-measuring module and the dual optical axis synchronous drive system; a range-measuring module support for mounting the laser range-measuring module, the range-measuring module support being rotatably nested to the range-measuring pitch disk via a second rotating connection structure to achieve horizontal swing; wherein the axes of the first rotating connection structure and the second rotating connection structure intersect perpendicularly in space, and the range-measuring module support and the range-measuring pitch disk are stacked in the direction perpendicular to the optical axis of the laser range-measuring module.

[0018] Furthermore, the first rotating connection includes a horizontal shaft pin fixedly connected at one end to the integrated housing and a bushing disposed on the ranging pitch disk. The other end of the horizontal shaft pin is provided with a tapered or cylindrical smooth surface, inserted into the bushing and tightly fitted to the inner wall of the bushing, or the horizontal shaft pin and the bushing are interference fit, and the gap is eliminated by the compression between the horizontal shaft pin and the inner wall of the bushing; and / or, the second rotating connection includes a vertical shaft pin threadedly connected to the ranging module support; a gap-eliminating O-ring is provided between the ranging module support and the ranging pitch disk, and the gap of the second rotating connection is eliminated by tightening the vertical shaft pin and compressing the gap-eliminating O-ring.

[0019] Furthermore, a pitch spring is provided between the universal swing assembly and the integrated housing. The pitch spring is used to apply a biasing force to the universal swing assembly so that the universal swing assembly keeps in contact with the output end of the second drive unit to eliminate transmission backlash.

[0020] Furthermore, a drive bushing is provided between the output end of the second drive unit and the universal swing assembly. The drive bushing has a spherical, arc-shaped, or convex structure to achieve point contact or line contact.

[0021] Furthermore, it also includes a dual-optical-axis parallel calibration system for calibrating the parallelism between the aiming optical axis and the ranging optical axis, which includes a pitch calibration unit for calibrating the vertical parallelism and a horizontal calibration unit for calibrating the horizontal parallelism.

[0022] Furthermore, the pitch adjustment unit includes a laser pitch adjustment ring and an interlocking component. The laser pitch adjustment ring is circumferentially linked with the laser lifting ring, and the interlocking component is used to lock or separate the laser pitch adjustment ring from the operation input unit to achieve independent adjustment of the pitch angle of the aiming optical axis and the ranging optical axis.

[0023] Furthermore, the laser lifting ring and the laser pitch adjustment ring are concentrically nested on the outside of the main shaft. The laser lifting ring is driven to rotate circumferentially by the laser pitch adjustment ring through the groove and the boss, and is axially limited by the pressure ring. The interlocking component is a screw, which is used to radially lock the laser pitch adjustment ring to the main shaft.

[0024] Furthermore, the horizontal adjustment unit includes a horizontal adjustment pin and a horizontal spring. The horizontal spring causes the laser ranging module to tend to move towards an initial position. Rotating the horizontal adjustment pin can push the laser ranging module to overcome the elastic force of the horizontal spring and swing horizontally.

[0025] Furthermore, an O-ring is provided between the leveling pin and the integrated housing for sealing and preventing loosening.

[0026] Furthermore, the ranging module support and the laser ranging module are either separately connected or integrally formed.

[0027] Furthermore, the pitch spring and / or the horizontal spring are helical springs or leaf springs.

[0028] Furthermore, the main shaft can be an integral structure or a split structure.

[0029] On the other hand, the present invention also provides a method for synchronously adjusting the optical axis of a rifle scope with an integrated laser rangefinder, comprising: receiving a ballistic adjustment operation acting on a single operation input component; converting the operation input into two drive outputs having a fixed proportional relationship; using the first drive output to drive the image-aligning system of the scope's optical assembly to oscillate, thereby changing the aiming optical axis; simultaneously, using the second drive output to drive the laser rangefinder module to oscillate, thereby changing the rangefinding optical axis; wherein the fixed proportional relationship is configured such that the rangefinding optical axis always follows the aiming optical axis in synchronous deflection and remains parallel.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: The optical path systems of the rifle scope and the laser rangefinder module of this invention are independent of each other, ensuring that the optical axis of the rifle scope and the optical axis of the laser rangefinder module remain parallel when adjusting the ballistic compensation adjuster. That is, at any ballistic compensation position, the optical axis of the rifle scope remains parallel to the optical axis of the laser rangefinder, guaranteeing that when using the rifle scope as a viewfinder, the target pointed to by the center of the reticle of the rifle scope is the target being ranged. Furthermore, the independence of the optical path systems of the rifle scope and the laser rangefinder module in this invention also maintains the high light transmittance of the original rifle scope, without affecting its optical performance or mechanical functions.

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a rifle scope with a laser rangefinder mounted in the first technical solution of this invention. Figure 2 yes Figure 1 The diagram shows the calibration optical axis of the rifle scope and laser rangefinder in the scheme shown. Figure 3 yes Figure 1 A schematic diagram showing the deviation between the rifle scope and the optical axis of the laser rangefinder in the illustrated scheme; Figure 4 This is a three-dimensional structural diagram of the rifle scope integrated laser rangefinding module according to the second technical solution of the present invention. Figure 5 yes Figure 4 The diagram shows the calibration optical axis of the rifle scope and the built-in laser rangefinder module. Figure 6 yes Figure 4 The diagram shows the deviation between the optical axis of the rifle scope and the built-in laser rangefinder module. Figure 7 This is a schematic diagram of the module structure of the rifle scope of the integrated laser rangefinder according to an embodiment of the present invention; Figure 8 yes Figure 7 The diagram shows the principle of calibrating the optical axis of a rifle scope. Figure 9 yes Figure 7 The diagram shows the optical axis synchronization principle of a rifle scope. Figure 10 This is a schematic diagram of the optical principle structure of the rifle scope of the integrated laser rangefinder according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the product structure of the rifle scope with an integrated laser rangefinder according to an embodiment of the present invention; Figure 12 yes Figure 11 The diagram shows the structure of the ballistic adjustment system in the rifle scope. Figure 13 yes Figure 12 A schematic diagram of the universal swing mechanism along section AA in the rifle scope shown. Figure 14 yes Figure 13 The exploded structural diagram of the universal swing mechanism shown; Figure 15 yes Figure 12 A schematic diagram of the dual optical axis synchronous drive system in the rifle scope shown. Figure 16 yes Figure 15 The diagram shows the exploded structure of the dual-optical-axis synchronous drive system. Figure 17 yes Figure 12 A schematic diagram of the horizontal adjustment mechanism in the rifle scope shown. Figure 18 yes Figure 17 The diagram shows the structure of the horizontal adjustment mechanism along the BB section. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0034] This embodiment provides a rifle scope with an integrated laser rangefinder, the basic structure of which is as follows: Figure 7 As shown, a mechanical synchronization mechanism 200, a laser rangefinder mounting cavity 5, and a laser rangefinder module 4 mounted in the laser rangefinder mounting cavity 5 are arranged at the position of the ballistic compensation adjuster 51 of a conventional rifle scope 250. Through this mechanical synchronization mechanism 200, the laser rangefinder module 4 and the ballistic compensation adjuster 51 of the rifle scope 2 are kept in tandem. Figure 8 As shown, during production and assembly, the optical axis 210 of the rifle scope 250 and the ranging optical axis 410 of the laser ranging module 4 are calibrated to be parallel; as Figure 9 As shown, when the ballistic compensation adjuster 51 is adjusted to any adjustment amount, under the action of the mechanical synchronization mechanism, the rangefinding optical axis 410 and the optical axis 210 of the rifle scope always remain parallel.

[0035] like Figure 11 As shown, the rifle scope of this embodiment is structurally divided into two main functional systems: the scope body system 15 and the ballistic adjustment system 16. That is, in Figure 7 Based on the conventional rifle scope 2, a ballistic adjustment system 16 is integrated to realize the mechanical synchronization mechanism.

[0036] Among them, such as Figure 10 As shown, the main body system 15 of the scope has the same structure and function as a conventional rifle scope 2, providing basic optical observation, imaging, and ballistic adjustment functions. It includes an objective lens group 12, a focusing group (not shown in the figure), a first focal plane 40, an image-establishing system 13, a second focal plane 50, and an eyepiece group 14 arranged sequentially along the optical axis 210. The image-establishing system 13 has a ball joint 100 at one end near the second focal plane 50 as a pivot point for the image-establishing system 13. The ballistic adjustment system 16 is integrated as a complete system into the ballistic compensation adjuster position of the main body system 15 of the scope.

[0037] like Figure 7 and Figure 11 As shown, the ballistic adjustment system 16 in this embodiment is fixedly installed on the scope barrel shell of the main body system 15, specifically located at the ballistic compensation adjuster mounting position of the main body system 15.

[0038] More specifically, such as Figure 12 As shown, the ballistic adjustment system 16 uses the rangefinding housing 24 as its core structure. The rangefinding housing 24 is directly and fixedly connected to the main body of the scope system 15. The rangefinding housing 24 is connected to the scope barrel of the main body of the scope system 15 by fasteners, covering the position of the ballistic compensation adjustment handwheel of the main body of the scope system 15. The main shaft 9 of the ballistic adjustment system 16 extends downward, and its end directly abuts against or connects to the drive arm of the image-establishing system 13 inside the main body of the scope system 15, i.e., the second driven point 1, to achieve direct drive of the optical axis 210 of the main body of the scope system 15.

[0039] The ballistic adjustment system 16 includes a laser ranging module 4 and several subsystems for adjusting and controlling the laser ranging module 4: a omnidirectional oscillation system, a dual-optical-axis synchronous drive system, and a dual-optical-axis parallel calibration system. The laser ranging module 4 uses an existing, mature laser ranging module. The subsystems work together to achieve synchronous oscillation and parallel calibration of the dual optical axes without altering the original optical path of the sight, ensuring high light transmittance. Through the optical axis synchronization mechanism, the laser ranging module and the ballistic compensation adjuster maintain linkage.

[0040] like Figure 12 As shown, the omnidirectional swing system, the dual-optical-axis synchronous drive system, and the dual-optical-axis parallel adjustment system are integrated inside and outside the ranging housing 24. The ranging housing 24 provides a support structure for the omnidirectional swing system, serves as the mounting base for the dual-optical-axis synchronous drive system, provides an operating interface for the dual-optical-axis parallel adjustment system, and forms a laser ranging mounting cavity 5 within the ranging housing 24.

[0041] like Figure 8 As shown, during production and assembly, the optical axis of the main sight system 15 and the optical axis of the laser rangefinder module 4 are first aligned to be parallel; as Figure 9 As shown, regardless of the adjustment amount of the ballistic compensation adjuster during subsequent use, the ballistic adjustment system 16 ensures that the optical axis of the laser rangefinder module 4 remains parallel to the optical axis of the rifle scope, guaranteeing that when using the rifle scope as a rangefinder viewfinder, the target pointed to by the center of the crosshairs of the rifle scope is the rangefinder target.

[0042] Specifically, such as Figure 10 As shown, the laser rangefinder module 4 is fixed on the rangefinder module support 11. One end of the rangefinder module support 11 is provided with a rotating shaft 220, and the other end serves as the first driven point 2. Driving the first driven point 2 can cause the rangefinder module support 11 to swing around its rotating shaft 220. The other end of the image-setting system 13 of the scope body system 15, opposite to the rotating ball joint 100, is provided as the second driven point 1. Driving the second driven point 1 can cause the image-setting system 13 to swing around its ball joint 100. There are two additional drive units, namely the main spindle 9 and the laser lifting platform 7. The laser lifting platform 7 and the main spindle 9 are nested coaxially. When the main spindle 9 rotates, it pushes the second driven point 1 to move. At the same time, the main spindle 9 also drives the laser lifting platform 7 to push the first driven point 2 to move. Thus, the main spindle 9 and the laser lifting platform 7 drive the laser ranging module 4 and the image straightening system 13 to swing according to specific and equal angular deflection amounts according to different translation amounts, ensuring that the optical axis of the laser ranging module 4 and the optical axis of the aiming scope main body system 15 always remain parallel.

[0043] The optical principle for adjusting the ballistic compensation amount in the main body system 15 of the sight is as follows: when the optical axis of the image-setting system 13 coincides with the optical axis of the objective lens group 12, the center of the crosshairs on the image-setting system 13 is directly opposite the center of the field of view of the objective lens group 12. When the main shaft 9 pushes the image-setting system 13, causing the image-setting system 13 to swing around its ball joint 100, theoretically, the trajectory of the center of the reticle is an arc. After the swing, the center point of the crosshairs is no longer on the first focal plane 40, but within the small swing angle during normal operation, it is approximately considered that the center point of the crosshairs is still on the first focal plane 40. Assuming the distance from the center point of the crosshairs to the optical axis of the objective lens group 12 is d1, the position of the reticle center corresponds to the field of view direction of the objective lens group 12 at an angle 'a' away from its optical axis. The direction pointed to by the center point of the crosshairs through the eyepiece is the direction at an angle 'a' away from the optical axis of the objective lens group 12. This angle 'a' is the ballistic compensation amount, usually expressed as MOA (Minute of Arc) or MIL (Milliradians). At this point, the equivalent optical axis of the rifle scope is deflected by an angle 'a' relative to its original position. The equivalent optical axis is the virtual axis perceived by the shooter for aiming, as observed through the eyepiece 14, and its deflection angle 'a' is the ballistic compensation amount.

[0044] The structure of each subsystem is described below: like Figure 13 and 14 As shown, the omnidirectional swing system adopts a dual-axis cross-layered arrangement structure, including a ranging module support 11 and a dual-axis gapless omnidirectional swing assembly. Combined with... Figure 10 and 11 As shown, the ranging module support 11 is used to mount and fix the laser ranging module 4. The dual-axis backlash-free omnidirectional swing assembly includes a ranging pitch disk 17 and a backlash-free mechanism, which includes: a bushing 27, a horizontal axis pin 28, a vertical axis pin 19, a backlash-free washer 18, and a backlash-free O-ring 20. The ranging module support 11 and the ranging pitch disk 17 are arranged in a nested, stacked configuration, which allows the ranging module support 11 to swing omnidirectionally. The laser ranging module 4, fixed on the ranging module support 11, can then swing arbitrarily within the working cone angle. The nested arrangement of the ranging module support 11 and the ranging pitch disk 17 minimizes the system volume. By setting the gap-free structure at the rotational engagement part between the ranging pitch disk 17 and the ranging housing 24, and at the nested engagement part between the ranging module support 11 and the ranging pitch disk 17, the laser ranging module 4 can be made to swing without gap, ensuring that the ranging optical axis is accurately pointing to the target and maintaining the parallel state between the ranging optical axis and the aiming optical axis of the sight.

[0045] After the laser ranging module 4 is fixedly installed on the ranging module support 11, the two are installed together into the laser ranging mounting cavity 5. Specifically, the laser ranging module 4 is fixedly installed on the ranging module support 11 with screws. The two can adopt a separate assembly structure or an integrated molding design. The integrated molding design can further improve structural stability and reduce assembly gaps. The ranging module support 11 is preferably made of high-strength aluminum alloy, taking into account both structural strength and lightweight requirements, providing a stable load-bearing and swing foundation for the laser ranging module 4.

[0046] One end of the ranging module support 11 is provided with a rotating shaft 220, and the other end serves as a first driven point 2. Driving the first driven point 2 can cause the ranging module support 11 to swing around its rotating shaft 220. The other end of the imaging system 13 opposite to the ball joint 100 serves as a second driven point 1. Driving the second driven point 1 can cause the imaging system 13 to swing around the ball joint 100.

[0047] The specific structure of the gap-eliminating mechanism is as follows: A countersunk hole is machined at each end of the ranging pitch disk 17, and the two countersunk holes are coaxial. A bushing 27 is press-fitted into each of the two countersunk holes. One end of the horizontal shaft nail 28 is fixed to the ranging housing 24 by a thread, and the other end is designed with a conical or cylindrical smooth surface structure, inserted into the bushing 27, so that the conical or cylindrical smooth surface fits tightly against the inner wall of the bushing 27. The elastic deformation of the bushing 27 fills the gap, achieving gapless pitching and oscillation. The ranging module support 11 and the ranging pitch disk 17 are nested together via a circular mating surface. The front end of this circular mating surface is machined with a 45° bevel, and a gap-eliminating O-ring 20 is coaxially fitted onto the bevel to fill the radial gap after the two are nested. The vertical shaft pin 19 is machined with external threads and screwed into the pre-set threaded hole of the ranging module support 11. A gap-eliminating shim 18 is fitted between the vertical shaft pin 19 and the ranging pitch disk 17. The gap-eliminating shim 18 is made of the same material as or has similar physical properties to the bushing 27 and has self-lubricating properties. By gradually tightening the vertical shaft pin 19, the gap-eliminating shim 18 and the ranging pitch disk 17 can be moved axially. The gap-eliminating O-ring 20 is squeezed by the inclined surface, so that it fits against the mating end face and circular surface of the ranging module support 11, automatically aligning with the mating axis and eliminating radial and axial clearances. Through the cross-layered arrangement of the above-mentioned pitch swing mechanism and horizontal swing mechanism, the ranging module support 11 can drive the laser ranging module 4 to achieve omnidirectional swing in any direction within a working cone angle of ±5°.

[0048] like Figure 15 and 16 As shown, the dual-optical-axis synchronous drive system adopts a coaxial nested transmission structure, including a drive mechanism, a drive system support 6, a laser lifting ring 8, a laser pitch adjustment ring 25, a limit screw 21, a drive bushing 22, and a pitch spring 10.

[0049] The drive mechanism includes two cooperating drive units as described above: the main shaft 9 and the laser lifting platform 7, which are used to ensure that the optical axis of the rangefinding module and the optical axis of the rifle scope remain parallel at all times.

[0050] The drive system support 6 is fixed to the main housing of the sight. It has internal threads that are machined inside, which are paired with the external threads of the main shaft 9 to form a thread pairing of P1=1mm, where P1 is the first pitch. The laser lifting ring 8 and the laser pitch adjustment ring 25 are concentrically nested on the outside of the main shaft 9. The outer side of the laser lifting ring 8 is axially limited by the pressure ring 23, so that the laser lifting ring 8 can only rotate circumferentially and cannot move axially. The inner side of the laser lifting ring 8 has internal threads that are paired with the external threads of the laser lifting platform 7 to form a thread pairing of P2=0.347mm, where P2 is the second pitch. A radial threaded hole is machined on one side of the laser lifting platform 7. After the limiting screw 21 is screwed into this hole for fixation, its end is embedded in the oblong hole on one side of the drive system support 6. When the laser lifting platform 7 attempts to rotate circumferentially, the limiting screw 21 is blocked by the long walls on both sides of the oblong hole. However, when the laser lifting platform 7 needs to move axially, the limiting screw 21 can slide freely within the length of the oblong hole. Therefore, this structure restricts the laser lifting platform 7 to only move axially and prohibits its circumferential rotation. The inner wall of the laser lifting ring 8 is provided with an axial groove, and the outer wall of the laser pitch adjustment ring 25 is provided with a corresponding boss. The groove and the boss slide together to achieve synchronous circumferential movement and relative axial movement. The laser pitch adjustment ring 25 and the main shaft 9 are interlocked by a radially installed screw 29: the screw 29 is screwed in radially along the laser pitch adjustment ring, passes through its boss, and is embedded in the slot of the main shaft 9. When locked, the two move synchronously circumferentially and axially; when loosened, the interlock is released. A drive bushing 22 is installed between the laser lifting platform 7 of the dual-optical-axis synchronous drive system and the ranging module support 11 of the omnidirectional swing system. One end of the drive bushing 22 abuts against the drive end face of the laser lifting platform 7, and the other end abuts against the first driven point 2 of the ranging module support 11, realizing point contact transmission and improving swing accuracy. A pitch spring 10 is installed between the ranging module support 11 and the ranging housing 24. The pitch spring 10 is always in a compressed state, and its elastic force pushes the ranging module support 11 and the drive bushing 22 to fit tightly together. The drive bushing 22 then makes tight contact with the end face of the laser lifting platform 7, forming a rigid contact chain of spring, module support, bushing, and lifting platform, completely eliminating transmission backlash.

[0051] The distance from the principal point of the image side of the objective lens group 12 to the first focal plane 40 is defined as the focal length L1 of the objective lens group 12. The distance from the rotation axis 220 of the rangefinding module support 11 to the first driven point 2 at its other end is defined as L2. The distance from the first focal plane 40 of the objective lens group 12 to the center of the ball joint 100 of the image erecting system 13 is defined as S1. The distance from the contact point between the main axis 9 and the image erecting system 13, i.e. the second driven point 1, to the center of the ball joint 100 of the image erecting system 13 is defined as S0. When P1 / P2=(L1 / L2)(S1 / S0), the optical axis of the rifle scope and the optical axis of the rangefinder always remain parallel.

[0052] like Figure 17 and Figure 18 As shown, the dual-optical-axis parallel calibration system includes a pitch calibration mechanism and a horizontal calibration mechanism, which respectively realize the parallel calibration of the optical axes in the vertical and horizontal directions.

[0053] The pitch adjustment mechanism relies on the interlocking / unlocking structure of the main shaft 9 and the laser pitch adjustment ring 25. Tightening the screw 29 achieves synchronous movement between the main shaft 9 and the laser pitch adjustment ring 25; loosening it disengages the synchronization. During adjustment, the main shaft 9 can be kept stationary (i.e., the sight optical axis is fixed), and the laser pitch adjustment ring 25 can be rotated, causing the laser lifting ring 8 to rotate circumferentially, thereby pushing the laser lifting platform 7 to move axially and driving the ranging module support 11 to pitch and swing until the laser ranging optical axis and the sight optical axis are parallel in the pitch direction. Alternatively, the laser pitch adjustment ring 25 can be kept stationary (i.e., the laser optical axis is fixed), and the main shaft 9 can be rotated to push the image-aligning system 13 to pitch and swing until the two optical axes are parallel. After confirming that the two optical axes are parallel, the screw 29 can be tightened again.

[0054] The horizontal adjustment mechanism includes a horizontal adjustment pin 32, a horizontal spring 30, a horizontal spring limiting pin 31, and an O-ring 33. A threaded hole is machined on the side of the ranging module support 11. After the horizontal spring limiting pin 31 is screwed into the threaded hole, the horizontal spring 30 is fitted onto its outer side. The two ends of the horizontal spring 30 abut against the inner wall of the ranging housing 24 and the side of the ranging module support 11, respectively. In the initial state before adjustment, the elastic force of the horizontal spring 30 keeps the side of the ranging module support 11 in close contact with the end face of the horizontal adjustment pin 32. When the horizontal adjustment pin 32 is screwed in, it pushes the ranging module support 11 to overcome the spring force and cause displacement. A stepped hole is machined on one side of the ranging housing 24. The inner section of the hole is set with an internal thread, and the outer section is a smooth cylindrical surface. The horizontal adjustment pin 32 is screwed into the threaded section, and its end face contacts the side of the ranging module support 11. A sealing groove is machined on the other end, and an O-ring 33 is fitted. The O-ring 33 is interference-fitted with the smooth outer section of the stepped hole. During calibration, rotate the horizontal calibration pin 32, and its threaded section moves axially along the stepped hole of the ranging housing 24, pushing the ranging module support 11 to swing horizontally against the elastic force of the horizontal spring 30. Observe the horizontal alignment of the crosshair center of the aiming scope with the laser ranging target point, and continuously fine-tune the horizontal calibration pin 32 until the dual optical axes are parallel in the horizontal direction. After calibration, the elastic force of the horizontal spring 30 ensures that the side of the ranging module support 11 is always in close contact with the end face of the horizontal calibration pin 32, eliminating horizontal swing back. The friction generated by the O-ring 33 being squeezed can prevent the horizontal calibration pin 32 from loosening, and the horizontal calibration pin 32 is exposed on the product surface, which is convenient for calibration during production and use.

[0055] The operation of the rifle scope of the integrated laser rangefinder includes two parts: ballistic compensation adjustment and dual-optical-axis synchronization, and dual-optical-axis parallel adjustment. The specific process is as follows: Ballistic compensation adjustment and dual optical axis synchronization process: When the user adjusts the ballistic compensation amount by rotating the ballistic handwheel 26, the ballistic handwheel 26 drives the main shaft 9 to rotate around its own axis. The main shaft 9 moves axially at an amplitude of P1 / turn through the threaded engagement with the drive system support 6 (in this embodiment, the first pitch P1 = 1mm, that is, for every rotation, the main shaft 9 moves axially by 1mm); the axial movement of the main shaft 9 directly acts on the second driven point 1 of the image-establishing system 13, pushing the image-establishing system 13 to swing around the ball joint 100, causing the optical axis of the sight to deflect by an angle α. Simultaneously, the main shaft 9 drives the laser pitch adjustment ring 25 to rotate synchronously circumferentially via the screw 29. The laser pitch adjustment ring 25 drives the laser lifting ring 8 to rotate circumferentially through the cooperation of the boss and the groove. The laser lifting ring 8, through its threaded engagement with the laser lifting platform 7, pushes the laser lifting platform 7 to move axially at an amplitude of P2 / turn (in this embodiment, the second thread pitch P2 = 0.347mm). The laser lifting platform 7, through the driving bushing 22, acts on the first driven point 2 of the ranging module support 11, pushing the ranging module support 11 to swing around its rotation axis 220. Since P1 / P2 = (L1 / L2)(S1 / S0), the swing angle of the ranging module support 11 is completely consistent with the swing angle α of the image straightening system 13, thereby ensuring that the optical axis of the laser ranging module 4 and the optical axis of the sight remain parallel at all times.

[0056] Throughout the adjustment process, the pitch spring 10 always provides clamping force to ensure that the laser lifting platform 7, the drive bushing 22 and the ranging module support 11 are in close contact without gaps, achieving zero backlash and ensuring accurate optical axis pointing.

[0057] Dual optical axis parallel adjustment process: When adjusting the pitch direction, loosen screw 29 to release the interlock between the main shaft 9 and the laser pitch adjustment ring 25, and independently adjust the main shaft 9 or the laser pitch adjustment ring 25 until the dual optical axes are parallel, then tighten screw 29; When adjusting the horizontal direction, rotate the exposed horizontal adjustment pin 32 to push the ranging module support 11 to swing horizontally until the dual optical axes are parallel in the horizontal direction. The horizontal spring 30 and the O-ring 33 respectively ensure that the horizontal swing has no backlash and prevent the horizontal adjustment pin 32 from loosening.

[0058] The structure of this invention is not limited to the embodiments described above. Alternative structures or modifications that can achieve the functions of each part are also within the scope of protection of this invention. For example: The ranging module support 11 and the laser ranging module 4 can be changed from separate assembly to an integrated design, further improving structural rigidity and coaxiality.

[0059] The pitch spring 10 and the horizontal spring 30 can be replaced with leaf springs to reduce the axial installation space and improve the stability of the spring force.

[0060] The drive bushing 22 can be replaced with a steel ball, a split convex point or an arc structure, which reduces transmission friction and improves adjustment smoothness through point contact or line contact.

[0061] The limiting screw 21 of the laser lifting platform 7 can be replaced with a keyway structure. That is, an axial keyway is machined on the outer cylindrical surface of the laser lifting platform 7, and a matching flat key is fixed on the inner wall of the drive system support 6, or a raised key is directly fabricated on the inner wall of the drive system support 6. During assembly, the keyway of the laser lifting platform 7 must be aligned with the flat key or raised key of the drive system support 6 before installation, allowing the laser lifting platform 7 to slide freely along the direction of the key. However, because the key is stuck in the keyway, circumferential rotation is not possible. The limiting screw 21 of the laser lifting platform 7 can also be replaced with a guide groove and guide boss structure, which also achieves circumferential limiting and axial guiding functions: one or more sets of axial bosses and grooves are provided on the mating surfaces of the laser lifting platform 7 and the drive system support 6. For example, two axial protrusions are provided on the outer wall of the laser lifting platform 7 as guide bosses, and two corresponding grooves are machined on the inner wall of the drive system support 6 as guide grooves, or vice versa, with the boss on the drive system support 6 and the groove on the laser lifting platform 7. The boss is embedded in the groove, and the two form a tight sliding fit. Similar to the principle of a keyway, this structure only allows the laser lifting platform 7 to move axially, but prevents circumferential rotation by the side engagement of the boss and the groove.

[0062] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A rifle scope integrating a laser rangefinder, characterized in that, include: The optical components of the sight, whose aiming optical axis can be driven to swing to achieve ballistic compensation; The laser ranging module has a ranging optical axis that is independent of the aiming optical axis. And a dual optical axis synchronous drive system, which includes: an operation input unit for receiving the user's ballistic adjustment operation; The first drive unit, in response to the operation of the operation input unit, drives the sight optical assembly to deflect the aiming optical axis; The second drive unit, in response to the operation input unit, drives the laser ranging module to deflect the ranging optical axis; wherein, the first drive unit and the second drive unit are coupled through a preset transmission matching relationship, so that the aiming optical axis and the ranging optical axis remain parallel during the deflection process.

2. The rifle sight with an integrated laser rangefinder according to claim 1, characterized in that, The optical components of the sight include an objective lens group, a focusing group, an image-establishing system that can swing around a fulcrum, and an eyepiece group arranged sequentially along the optical axis. The first driving unit acts on the image-establishing system to drive its swing.

3. The rifle sight with an integrated laser rangefinder according to claim 2, characterized in that, The first drive unit includes a main shaft connected to the operation input unit and configured to generate axial movement during rotation to drive the aiming scope optical assembly; the second drive unit includes a transmission assembly coupled to the main shaft, the transmission assembly being configured such that for every unit axial displacement generated by the main shaft, the transmission assembly generates a corresponding fixed unit displacement to drive the laser ranging module to swing.

4. The rifle scope with an integrated laser rangefinder according to claim 3, characterized in that, The transmission assembly includes: A drive system support is fixedly installed and connected to the main shaft via a first threaded pair. The laser lifting ring rotates synchronously with the main shaft in the circumferential direction and is axially limited. The laser lifting platform is connected to the laser lifting ring via a second threaded pair and is constrained to move only axially; wherein, the axial movement of the laser lifting platform drives the laser ranging module to swing.

5. The rifle sight with an integrated laser rangefinder according to claim 4, characterized in that, The preset transmission matching relationship is set as follows: the ratio of the pitch P1 of the first threaded pair to the pitch P2 of the second threaded pair satisfies: P1 / P2=(L1 / L2)(S1 / S0), where L1 is the equivalent focal length of the objective lens group and the focusing group, L2 is the swing arm length of the laser ranging module, S1 is the distance from the swing fulcrum of the image erecting system to the first focal plane of the aiming lens, and S0 is the length of the driving force arm of the main shaft on the image erecting system.

6. The rifle sight with an integrated laser rangefinder according to claim 5, characterized in that, The laser lifting platform is connected to the drive system support via a limiting mechanism. The limiting mechanism is configured to allow the laser lifting platform to move axially but restrict its circumferential rotation.

7. The rifle sight with an integrated laser rangefinder according to claim 5, characterized in that, The laser ranging module is mounted on a universal swing assembly, which is connected to the output end of the second drive unit, and the universal swing assembly is configured to allow the laser ranging module to swing in both pitch and horizontal directions.

8. The rifle sight with an integrated laser rangefinder according to claim 7, characterized in that, The omnidirectional oscillation assembly includes: a range-measuring pitch disk, rotatably connected to an integrated housing via a first rotating connection structure to achieve pitch oscillation; the integrated housing is fixedly connected to the scope barrel of the aiming scope body and is used to support at least a portion of the laser range-measuring module and the dual optical axis synchronous drive system; and a range-measuring module support for mounting the laser range-measuring module, the range-measuring module support being rotatably nested to the range-measuring pitch disk via a second rotating connection structure to achieve horizontal oscillation; wherein the axes of the first rotating connection structure and the second rotating connection structure intersect perpendicularly in space, and the range-measuring module support and the range-measuring pitch disk are stacked in the direction perpendicular to the optical axis of the laser range-measuring module.

9. The rifle sight with an integrated laser rangefinder according to claim 8, characterized in that, The first rotating connection structure includes a horizontal shaft pin fixedly connected at one end to the integrated housing and a bushing disposed on the ranging pitch disk. The other end of the horizontal shaft pin is provided with a tapered or cylindrical smooth surface, inserted into the bushing and tightly fitted to the inner wall of the bushing, or the horizontal shaft pin and the bushing are interference fit, and the gap is eliminated by the compression between the horizontal shaft pin and the inner wall of the bushing; and / or, the second rotating connection structure includes a vertical shaft pin threadedly connected to the ranging module support, and a gap-eliminating O-ring is provided between the ranging module support and the ranging pitch disk. The gap of the second rotating connection structure is eliminated by tightening the vertical shaft pin and compressing the gap-eliminating O-ring.

10. The rifle sight with an integrated laser rangefinder according to claim 8, characterized in that, A pitch spring is provided between the universal swing assembly and the integrated housing. The pitch spring is used to apply a biasing force to the universal swing assembly so that the universal swing assembly keeps in contact with the output end of the second drive unit to eliminate transmission gap.

11. The rifle sight with an integrated laser rangefinder according to claim 10, characterized in that, A drive bushing is provided between the output end of the second drive unit and the universal swing assembly. The drive bushing has a spherical, arc-shaped, or convex structure to achieve point contact or line contact.

12. The rifle sight of the integrated laser rangefinder according to any one of claims 8, 10, and 11, characterized in that, It also includes a dual-optical-axis parallel calibration system for calibrating the parallelism between the aiming optical axis and the ranging optical axis, which includes a pitch calibration unit for calibrating the vertical parallelism and a horizontal calibration unit for calibrating the horizontal parallelism.

13. The rifle sight with an integrated laser rangefinder according to claim 12, characterized in that, The pitch adjustment unit includes a laser pitch adjustment ring and an interlocking component. The laser pitch adjustment ring is circumferentially linked with the laser lifting ring. The interlocking component is used to lock or separate the laser pitch adjustment ring from the operation input unit to achieve independent adjustment of the pitch angle of the aiming optical axis and the ranging optical axis.

14. The rifle sight with an integrated laser rangefinder according to claim 13, characterized in that, The laser lifting ring and the laser pitch adjustment ring are concentrically nested on the outside of the main shaft. The laser lifting ring is driven to rotate circumferentially by the laser pitch adjustment ring through the groove and the boss, and is axially limited by the pressure ring. The interlocking component is a screw, which is used to radially lock the laser pitch adjustment ring to the main shaft.

15. The rifle sight with an integrated laser rangefinder according to claim 12, characterized in that, The horizontal adjustment unit includes a horizontal adjustment pin and a horizontal spring. The horizontal spring causes the laser ranging module to tend to move towards an initial position. Rotating the horizontal adjustment pin can push the laser ranging module to overcome the elastic force of the horizontal spring and swing horizontally.

16. The rifle sight with an integrated laser rangefinder according to claim 15, characterized in that, An O-ring is provided between the horizontal adjustment pin and the integrated housing for sealing and preventing loosening.

17. The rifle sight with an integrated laser rangefinder according to claim 8, characterized in that, The ranging module support and the laser ranging module are either separately connected or integrally formed.

18. The rifle sight with an integrated laser rangefinder according to claim 3, characterized in that, The main shaft can be an integral structure or a split structure.

19. A method for synchronously adjusting the optical axis of a rifle scope with an integrated laser rangefinder, applied to the rifle scope of the integrated laser rangefinder according to any one of claims 1-18, characterized in that, include: Receives ballistic adjustment operations applied to a single operational input component; converts the operational input into two drive outputs with a fixed proportional relationship; The first drive output drives the image-aligning system of the sight's optical assembly to oscillate, thereby changing the aiming optical axis; simultaneously, the second drive output drives the laser rangefinder module to oscillate, thereby changing the rangefinding optical axis; wherein the fixed proportional relationship is configured such that the rangefinding optical axis always follows the aiming optical axis in synchronous deflection and remains parallel.

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