Optical null corrector and method of optical null correction

Abstract

The present disclosure relates to an optical zero correction instrument and an optical zero correction method. The optical zero correction instrument for correcting a sighting telescope comprises a theodolite, a base plate, a reticle assembly, a first support and a second support fixedly arranged on the base plate, and a field instrument arranged on the second support. When the reticle assembly is placed on the first support and limited by a limiting block on the first support, the second support adjusts the height of the field instrument. A rocker arm limiting seat is connected with a rocker arm of the sighting telescope and is used for limiting the rotation of the rocker arm of the sighting telescope. A sighting telescope comprehensive tester is connected with the sighting telescope and is used for correcting the corresponding relationship between the position of a rotary transformer of the sighting telescope and the predicted optical angle of a differentiation center of the field instrument in the sighting telescope. The position of the rotary transformer when the sighting telescope is aimed at the field instrument is taken as the position corresponding to the optical zero. Through the present disclosure, the positioning of the sighting telescope and the angle limitation of the mirror can be facilitated, and the accuracy of the correction result can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of optical correction technology, and in particular to an optical zero-position calibrator and an optical zero-position calibrator method. Background Technology

[0002] A sight can be equipped on weapons such as artillery shell launchers and bullet launchers, allowing aiming at targets and improving accuracy. The optical zero point of the sight needs to be calibrated to ensure it meets aiming requirements.

[0003] In related technologies, although the optical zero point of a sight can be corrected using a sight correction device, the sight moves during the correction process, and the angle of the sight's reflector also changes, resulting in inaccurate correction results. Furthermore, existing sight correction devices cannot be used to calculate synchronization errors, angle measurement accuracy, instrument accuracy, aiming range, image tilt, or zero-point movement.

[0004] Therefore, there is a need for an optical zero-position correction instrument and an optical zero-position correction method that can reduce or even avoid the movement of the sight and the angle change of the reflector during the optical zero-position correction process. Summary of the Invention

[0005] This disclosure provides an optical zero-position correction instrument and an optical zero-position correction method, which can facilitate the positioning of the aiming scope and the limitation of the reflector angle, and improve the accuracy of the correction results.

[0006] To achieve the above objectives, this disclosure provides an optical zero-position correction instrument for calibrating a sight, comprising: a theodolite; a base plate; a reticle assembly including a flat plate and multiple reticles disposed on the flat plate; a first bracket fixedly disposed on the base plate and fixedly disposed on a limiting block; a second bracket fixedly disposed on the base plate, the second bracket being provided with a field of view, used to adjust the height of the field of view when the reticle assembly is placed on the first bracket and limited by the limiting block, so that the refractive center of the theodolite, the refractive center of the field of view, and the refractive centers of the multiple reticles are aligned in a straight line; and a rocker arm limiting seat disposed on the base plate and connected to the rocker arm of the sight, used to adjust the height of the field of view when the sight is placed on the first bracket. When the scope's rocker arm rotates and the field of view refraction center observed through the eyepiece of the scope coincides with the field of view refraction center of the scope, it is fixed relative to the base plate to restrict the rotation of the scope's rocker arm. The scope's comprehensive testing instrument, connected to the scope, corrects the correspondence between the position of the scope's rotary transformer and the predicted optical angle of the field of view refraction center in the scope when the scope is placed on the first support, is limited by the limiting block, the field of view refraction center observed through the eyepiece of the scope coincides with the field of view refraction center of the scope, and the scope's rocker arm is limited by the rocker arm limiting seat. The current position of the scope's rotary transformer is taken as the position corresponding to the optical zero position.

[0007] Optionally, a reticle magnetic seat is provided on the plate. When the reticle magnetic seat is in the open state, it is attracted to the plate. A first sleeve is fixedly provided on the reticle magnetic seat. The first sleeve has a first limiting hole. The first sleeve is sleeved on the first connecting rod. The first connecting rod is fixedly connected to the reticle. When the first limiting bolt passing through the first limiting hole contacts the first connecting rod, the relative movement between the first connecting rod and the first sleeve is restricted.

[0008] Optionally, the first support includes: a first upright plate, fixedly mounted on the base plate; a first horizontal plate, fixedly connected to the two first upright plates, and a limit block fixedly mounted on the first horizontal plate, the limit block having a ball groove, and a ball being disposed in the ball groove.

[0009] Optionally, the second support includes: a second upright plate, fixedly mounted on the base plate; a second horizontal plate, fixedly connected to the two second upright plates; and a second sleeve, fixedly connected to the second horizontal plate. The second sleeve is fitted onto the second connecting rod, which is fixedly connected to the field of view. The second sleeve has a second limiting hole. When the second limiting bolt passing through the second limiting hole contacts the second connecting rod, the relative movement between the second connecting rod and the second sleeve is restricted.

[0010] Optionally, the rocker arm limiting seat includes a rocker arm limiting magnetic seat, which is attracted to the base plate in the open state; a third sleeve is fixedly installed on the rocker arm limiting magnetic seat; the third sleeve is sleeved on the third connecting rod; an adapter plate is fixedly connected to the third connecting rod; a bearing sleeve is fixedly connected to the adapter plate, and the bearing sleeve is sleeved on the bearing of the rocker arm; the bearing is sleeved on the first rotating shaft, which is located at one end of the rocker arm, and a second rotating shaft is located at the other end of the rocker arm.

[0011] This disclosure provides an optical zero-position correction method based on an optical zero-position corrector, comprising: placing a reticle assembly on a first support; limiting the position of the reticle assembly by a limiting block on the first support; adjusting the height of the field instrument on a second support so that the refractive center of the theodolite, the refractive center of the field instrument, and the refractive centers of the multiple reticles are aligned on the same straight line; removing the reticle assembly from the first support; placing a sight on the first support and limiting the position of the sight by a limiting block; swinging the rocker arm of the sight so that the refractive center of the field instrument observed through the eyepiece of the sight coincides with the refractive center of the eyepiece of the sight; fixing the rocker arm limiting seat connected to the rocker arm to the base plate to limit the rotation of the rocker arm; and correcting the correspondence between the position of the rotary transformer of the sight and the predicted optical angle of the refractive center of the field instrument in the sight by using a sight comprehensive tester, and taking the current position of the rotary transformer of the sight as the position corresponding to the optical zero position.

[0012] Optionally, the optical zero-position correction method further includes: releasing the rocker arm limit seat from the base plate; rotating the rocker arm and obtaining the position of the first rotary transformer of the aiming scope; obtaining the first visual angle of the field of view refraction center relative to the eyepiece refraction center of the aiming scope as observed through the eyepiece of the aiming scope; the aiming scope integrated tester calculates the first predicted optical angle corresponding to the position of the first rotary transformer based on the correspondence between the position of the rotary transformer of the aiming scope and the predicted optical angle of the field of view refraction center in the aiming scope; and calculating the difference between the first visual angle and the first predicted optical angle as the synchronization error.

[0013] Optionally, the optical zero-position correction method further includes: switching the sight to image-stabilized mode to control the position of the sight's rotary transformer using a sight integrated tester; calculating the position of the second rotary transformer corresponding to the second predicted optical angle based on the correspondence; controlling the sight's rotary transformer to reach the second rotary transformer position using the sight integrated tester; obtaining the second visual angle of the field of view's refraction center observed through the sight; and calculating the difference between the second predicted optical angle and the second visual angle as the angle measurement accuracy.

[0014] Optionally, the optical zero-position correction method further includes: switching the sight to the mounting mode to control the position of the rotary transformer of the sight via the rocker arm; rotating the rocker arm so that the field of view differentiation center observed by the sight is at the third visual angle; the sight integrated tester obtains the position of the third rotary transformer of the sight; based on the correspondence, the third predicted optical angle corresponding to the position of the third rotary transformer is determined; and the difference between the third visual angle and the third predicted optical angle is calculated as the mounting accuracy.

[0015] Optionally, the optical zero-position correction method further includes: by rotating the rocker arm to change the position of the rotary transformer, obtaining the visual angle range of the field of view refraction center relative to the field of view refraction center observed through the eyepiece of the aiming scope, as the aiming range; by rotating the rocker arm to change the position of the rotary transformer, obtaining the motion trajectory of the field of view refraction center observed through the eyepiece of the aiming scope, and calculating the image tilt value based on the motion trajectory; removing the aiming scope from the first support, subjecting the aiming scope to impact and vibration, then placing the aiming scope back on the first support, and limiting the position of the aiming scope by a limiting block, determining the distance between the field of view refraction center of the aiming scope and the field of view refraction center observed through the eyepiece of the aiming scope, as the zero-position movement amount.

[0016] In the above implementation of the embodiments of this disclosure, a reticle assembly can be used to simulate a sight, and the height of the field of view can be adjusted by the reticle assembly to adapt the field of view to the sight. A limiting block can restrict the position of the reticle assembly or the sight, facilitating the placement of the reticle assembly and the sight, and reducing changes in the sight's position during calibration, thereby improving the accuracy of the calibration results. The rotary transformer of the sight can be rotated by turning the rocker arm, and the rotation of the rotary transformer can change the angle of the reflector, thereby changing the pitch angle of the sight, i.e., changing the optical axis angle of the sight. The rocker arm limiting seat can restrict the rotation of the rocker arm, thereby reducing the probability of changes in the reflector's angle during calibration, thus reducing errors, improving the accuracy of the calibration results, and correspondingly improving the positioning accuracy of the sight. Attached Figure Description

[0017] Figure 1 A partial structural diagram of an optical null-point calibrator provided in this embodiment of the present disclosure. Figure 1 ;

[0018] Figure 2 This is a partial structural schematic diagram of a reticle assembly in an optical null calibration instrument provided in an embodiment of the present disclosure;

[0019] Figure 3 A partial structural diagram of an optical null-point calibrator provided in this embodiment of the present disclosure. Figure 2 ;

[0020] Figure 4 This is a schematic diagram of the structure of a rocker arm limiting seat in an optical zero-position calibrator provided in an embodiment of the present disclosure;

[0021] Figure 5 A partial structural diagram of an optical null-point calibrator provided in this embodiment of the present disclosure. Figure 3 ;

[0022] Figure 6 A partial structural diagram of an optical null-point calibrator provided in this embodiment of the present disclosure. Figure 4 ;

[0023] Figure 7 This is a schematic diagram of the structure of a sight provided in an embodiment of the present disclosure;

[0024] Figure 8 A schematic diagram of an eyepiece observation image provided in an embodiment of this disclosure;

[0025] Figure 9 A partial structural diagram of an optical null-point calibrator provided in this embodiment of the present disclosure. Figure 5 ;

[0026] Figure 10 A flowchart of an optical null-position correction method provided in an embodiment of this disclosure.

[0027] Figures 1 to 10 middle:

[0028] 1. Theodolite; 2. Base plate; 3. Reticle assembly; 31. Flat plate; 32. Reticle; 321. Reticle differentiation center; 33. Reticle magnetic base; 34. First sleeve; 35. First limiting hole; 36. First connecting rod; 4. First bracket; 41. Limiting block; 42. First vertical plate; 43. First horizontal plate; 44. Ball bearing; 5. Second bracket; 51. Field of view; 52. Second vertical plate; 53. Second horizontal plate; 54. Second sleeve; 55. Second connecting rod; 56. Second limiting hole; 6. Rocker arm limiting seat; 61. Rocker arm limiting magnetic base; 62. Third sleeve; 63. Third connecting rod; 64. Adapter plate; 65. Bearing sleeve; 7. Sight scope comprehensive tester; 100. Sight scope; 110. Rocker arm; 120. Bearing; 130. First rotating shaft; 140. Second rotating shaft. Implementation

[0029] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0030] In this disclosure, for ease of description, directional terms such as "upper" and "lower" generally refer to the "upper" and "lower" along the Z-axis direction in a three-dimensional coordinate system when the corresponding component is in use. Additionally, the directional terms "inner" and "outer" refer to the "inner" and "outer" relative to the contour of the corresponding component itself. Furthermore, the terms "first," "second," etc., used in this application are for distinguishing one element from another and do not have sequential or importance implications. In the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure.

[0031] See Figures 1 to 10 In this embodiment, an optical zero-position correction instrument is provided for calibrating a sight 100, comprising: a theodolite 1; a base plate 2; a reticle assembly 3, including a flat plate 31 and multiple reticles 32 disposed on the flat plate 31; a first bracket 4, fixedly disposed on the base plate 2, and fixedly disposed with a limiting block 41; a second bracket 5, fixedly disposed on the base plate 2, and the second bracket 5 is provided with a field of view 51, used to adjust the height of the field of view 51 when the reticle assembly 3 is placed on the first bracket 4 and limited by the limiting block 41, so that the refractive center of the theodolite 1, the refractive center of the field of view 51, and the refractive centers of the multiple reticles 32 are located on the same straight line; and a rocker arm limiting seat 6, disposed on the base plate 2 and connected to the rocker arm 110 of the sight 100, used to limit the sight 100 when it is placed on the first bracket 4 and limited by the limiting block 41. Furthermore, when the rocker arm 110 of the aiming scope 100 rotates so that the field of view differentiation center observed through the eyepiece of the aiming scope 100 coincides with the field of view differentiation center of the eyepiece of the aiming scope 100, it is fixed relative to the base plate 2 to limit the rotation of the rocker arm 110 of the aiming scope 100; the aiming scope comprehensive tester 7 is connected to the aiming scope 100. When the aiming scope 100 is placed on the first support 4 and limited by the limiting block 41, and the field of view differentiation center observed through the eyepiece of the aiming scope 100 coincides with the field of view differentiation center of the aiming scope 100, and the rocker arm 110 of the aiming scope 100 is limited by the rocker arm limiting seat 6, it corrects the correspondence between the position of the rotary transformer of the aiming scope 100 and the predicted optical angle of the field of view differentiation center in the aiming scope 100, and takes the current position of the rotary transformer of the aiming scope 100 as the position corresponding to the optical zero position.

[0032] It should be noted that the exemplary embodiments involve differentiation centers, such as the differentiation center of the theodolite 1, the differentiation center of the field of view 51, the differentiation center of the differentiation plate 32, and the differentiation center of the eyepiece of the aiming scope 100. The differentiation center can represent the center of the corresponding component. Such a component can be disc-shaped, and a cross mark can be present on the disc-shaped component. The intersection of the cross mark is the differentiation center. Furthermore, the differentiation center of the field of view 51 can be represented by the field of view differentiation center.

[0033] It should be further noted that the sight 100 may have a rotary transformer and a reflector; changing the position of the rotary transformer can cause a change in the angle of the reflector. The position of the rotary transformer can be controlled by the rocker arm 110 or the sight integrated tester 7.

[0034] In an exemplary embodiment, the field of view refraction center can be used as the target being aimed at. When the field of view refraction center observed by the aiming scope 100 coincides with the eyepiece refraction center of the aiming scope 100, the aiming scope 100 is at optical zero position. During the optical zero position correction process, the position of the rotary transformer of the aiming scope 100 can be changed by rotating the rocker arm 110, and correspondingly, the angle of the reflector of the aiming scope 100 can be changed. When the rotation of the rocker arm 110 is stopped, the position of the rotary transformer of the aiming scope 100 can be kept unchanged, and correspondingly, the angle of the reflector of the aiming scope 100 can be kept unchanged. The theodolite 1 can be used when adjusting the height of the field of view 51, and the theodolite 1 can be removed after the height adjustment is completed. The field of view 51, the reticle 32, and the theodolite 1 can be arranged sequentially, that is, the reticle 32 can be located between the field of view 51 and the theodolite 1. The reticle refraction centers 321 of the multiple reticles 32 can be preset to be located on the same straight line for easy operation. Multiple limiting blocks 41 can be set, for example, three limiting blocks 41. The limiting blocks 41 can restrict the position of the reticle assembly 3 or the sight 100, which facilitates the installation of the reticle assembly 3 and the sight 100, reduces installation errors, improves installation accuracy, reduces operation time, and improves efficiency. During the calibration process, the limiting blocks 41 can also reduce or even prevent the movement of the sight 100, thereby improving the accuracy of the calibration results. The rocker arm limiting seat 6 can restrict the rotation of the rocker arm 110, thereby reducing the probability of changes in the reflector angle of the sight 100, which can further improve the accuracy of the calibration results.

[0035] In an exemplary embodiment, the scope integrated tester 7 can be connected to the scope 100 via a cable to drive the scope 100 and perform optical zero-position correction on the scope 100. See also... Figure 8 To understand the scope 100, we can use the eyepiece image shown. Figure 8 In this context, the angle of the target relative to the eyepiece's center of differentiation can be represented by degrees.

[0036] Furthermore, a reticle magnetic seat 33 is provided on the plate 31. When the plate is open, the reticle magnetic seat 33 is attracted to the plate 31 and can be fixed relative to the plate 31. A first sleeve 34 is fixedly provided on the reticle magnetic seat 33. The first sleeve 34 has a first limiting hole 35. The first sleeve 34 is sleeved on the first connecting rod 36. The first connecting rod 36 is fixedly connected to the reticle 32. When the first limiting bolt passing through the first limiting hole 35 contacts the first connecting rod 36, the relative movement between the first connecting rod 36 and the first sleeve 34 is restricted.

[0037] In an exemplary embodiment, the first link 36 can extend or retract relative to the first sleeve 34 to change the height of the reticle 32, so that the reticle 32 can more accurately simulate the condition of the sight 100.

[0038] Furthermore, the first support 4 includes: a first upright plate 42, which is fixedly mounted on the base plate 2; a first horizontal plate 43, which is fixedly connected to the two first upright plates 42; a limit block 41 is fixedly mounted on the first horizontal plate 43; the limit block 41 has a ball groove; and a ball 44 is provided in the ball groove.

[0039] In an exemplary embodiment, three limiting blocks 41 may be provided, each limiting block 41 being provided with a corresponding ball bearing 44. The ball bearing 44 may be fixedly connected to the limiting block 41. Through the ball bearing 44, friction and collision can be reduced, thus improving service life; the movement of the reticle assembly 3 and the sight 100 on the first horizontal plate 43 can be made smoother, reducing the difficulty of operation.

[0040] Furthermore, the second support 5 includes: a second upright plate 52, fixedly mounted on the base plate 2; a second horizontal plate 53, fixedly connected to the two second upright plates 52; a second sleeve 54, fixedly connected to the second horizontal plate 53, the second sleeve 54 being sleeved on the second connecting rod 55, the second connecting rod 55 being fixedly connected to the field of view instrument 51, and the second sleeve 54 having a second limiting hole 56. When the second limiting bolt passing through the second limiting hole 56 contacts the second connecting rod 55, the relative movement between the second connecting rod 55 and the second sleeve 54 is restricted.

[0041] In an exemplary embodiment, the second link 55 is telescopic relative to the second sleeve 54. The second link 55 and the second sleeve 54 facilitate the adjustment and fixation of the height of the field of view device 51.

[0042] Furthermore, the rocker arm limiting seat 6 includes a rocker arm limiting magnetic seat 61, which, in the open state, is attracted to the base plate 2 and can be fixed relative to the base plate 2; a third sleeve 62 is fixedly installed on the rocker arm limiting magnetic seat 61; the third sleeve 62 is sleeved on the third connecting rod 63; the third connecting rod 63 is fixedly connected to the adapter plate 64; the adapter plate 64 is fixedly connected to the bearing sleeve 65, which is sleeved on the bearing 120 of the rocker arm 110; the bearing 120 is sleeved on the first rotating shaft 130, which is located at one end of the rocker arm 110, and a second rotating shaft 140 is located at the other end of the rocker arm 110.

[0043] In an exemplary embodiment, the base plate 2 can be a metal plate, such as an iron plate. When the rocker arm limiting magnetic seat 61 is opened, it can generate a magnetic force to attract the base plate 2. The magnetic force increases the friction between the base plate 2 and the rocker arm limiting magnetic seat 61, and may even fix the base plate 2 and the rocker arm limiting magnetic seat 61 relative to each other. The third link 63 can extend and retract relative to the third sleeve 62 to adjust and fix the height of the bearing sleeve 65. The rocker arm 110 can rotate around the second rotating shaft 140, and the bearing 120 can be fixedly connected to the first rotating shaft 130. The bearing 120 can rotate relative to the bearing sleeve 65. When the rocker arm limiting magnetic seat 61 is opened, the base plate 2 and the rocker arm limiting magnetic seat 61 are relatively fixed. Under the action of gravity and friction, the third link 63 can be relatively fixed to the third sleeve 62.

[0044] In another embodiment, an optical zero-position correction method based on an optical zero-position calibrator is provided, including steps S101 to S103.

[0045] In step S101, the height of the field instrument is adjusted by placing the reticle assembly 3 on the first support 4; the position of the reticle assembly 3 is restricted by the limiting block 41 on the first support 4; the height of the field instrument 51 on the second support 5 is adjusted so that the differentiation center of the theodolite 1, the differentiation center of the field instrument 51, and the differentiation centers of the multiple reticles 32 are on the same straight line.

[0046] In step S102, the aiming scope reflector is adjusted, and the reticle assembly 3 is removed from the first support 4; the aiming scope 100 is placed on the first support 4, and the position of the aiming scope 100 is restricted by the limiting block 41; the rocker arm 110 of the aiming scope 100 is swung so that the field of view refraction center observed through the eyepiece of the aiming scope 100 coincides with the eyepiece refraction center of the aiming scope 100; the rocker arm limiting seat 6 connected to the rocker arm 110 is fixed on the base plate 2 to restrict the rotation of the rocker arm 110.

[0047] In step S103, zero-position correction is achieved through correspondence correction. Specifically, the correspondence between the position of the rotary transformer of the aiming scope 100 and the predicted optical angle of the field of view distribution center in the aiming scope 100 is corrected by the aiming scope comprehensive tester 7. The current position of the rotary transformer of the aiming scope 100 is taken as the position corresponding to the optical zero position.

[0048] Furthermore, the optical zero-position correction method also includes: releasing the rocker arm limiting seat 6 from the base plate 2; rotating the rocker arm 110 and obtaining the position of the first rotary transformer of the aiming scope 110; obtaining the first visual angle of the field of view refraction center relative to the eyepiece refraction center of the aiming scope 100 as observed through the eyepiece of the aiming scope 100; the aiming scope comprehensive tester 7 calculates the first predicted optical angle corresponding to the position of the first rotary transformer based on the correspondence between the position of the rotary transformer of the aiming scope 100 and the predicted optical angle of the field of view refraction center in the aiming scope 100; and calculating the difference between the first visual angle and the first predicted optical angle as the synchronization error.

[0049] Furthermore, the optical zero-position correction method also includes: switching the sight 100 to image-stabilized mode, so as to control the position of the rotary transformer of the sight 100 through the sight integrated test instrument 7; calculating the position of the second rotary transformer corresponding to the second predicted optical angle according to the correspondence; controlling the rotary transformer of the sight 100 to reach the position of the second rotary transformer; obtaining the second visual angle of the field of view divergence center observed through the sight 100; and calculating the difference between the second predicted optical angle and the second visual angle as the angle measurement accuracy.

[0050] Under image stabilization conditions, the eyepiece image of the sight 100 is stable, and the position of the rocker arm 110 cannot be changed. In the process of calculating the angle measurement accuracy, 5°, 10°, 15°, etc. can be used as the second predicted optical angles. The corresponding angle measurement accuracy can be obtained through each second predicted optical angle, and the average value of each angle measurement accuracy can be used as the angle measurement accuracy calculation result.

[0051] Furthermore, the optical zero-position correction method also includes: switching the sight 100 to the instrumentation mode, so as to control the position of the rotary transformer of the sight 100 through the rocker arm 110; rotating the rocker arm 110 so that the field of view differentiation center observed by the sight 100 is at the third visual angle; the sight integrated tester 7 obtains the position of the third rotary transformer of the sight 100; determining the third predicted optical angle corresponding to the position of the third rotary transformer according to the correspondence; and calculating the difference between the third visual angle and the third predicted optical angle as the instrumentation accuracy.

[0052] In the calibrated state, considering the effect of gravity on weapon projectiles (e.g., bullets, shells), the optical axis of the sight is lowered to ensure a hit even under gravity. In the calibrated state, the position of the rotary transformer in the sight's integrated testing instrument 7 is uncontrollable. Third visual angles of 5°, 10°, and 15° can be obtained, and the corresponding calibrated accuracy can be acquired. The average of these calibrated accuracies can be used as the calculated calibrated accuracy.

[0053] Furthermore, the optical zero-position correction method also includes: by rotating the rocker arm 110 to change the position of the rotary transformer, obtaining the visual angle range of the field of view refraction center observed through the eyepiece of the aiming scope 100 relative to the eyepiece refraction center of the aiming scope 100, as the aiming range; by rotating the rocker arm 110 to change the position of the rotary transformer, obtaining the motion trajectory of the field of view refraction center observed through the eyepiece of the aiming scope 100, and calculating the image tilt value based on the motion trajectory; removing the aiming scope 100 from the first support 4, subjecting the aiming scope 100 to impact and vibration, then placing the aiming scope 100 back on the first support 4, and limiting the position of the aiming scope 100 by the limiting block 41, determining the distance between the eyepiece refraction center of the aiming scope 100 and the field of view refraction center observed through the eyepiece of the aiming scope 100, as the zero-position movement amount.

[0054] It should be noted that the difference between the maximum and minimum angles at which the field of view's center of divergence is located within the eyepiece of the sight 100 can be used to determine the range of the visually estimated angle. If the trajectory is along a vertical or horizontal direction, or along... Figure 8 If the linear motion in the image observed through the eyepiece of the sight is shown, then the image tilt value can be 0°.

[0055] In an exemplary embodiment, compared with known optical zero-position correction methods, the optical zero-position correction method of this disclosure can calculate indicators such as synchronization error, angle measurement accuracy, instrumentation accuracy, aiming range, image tilt value, and zero-position movement, and can exclude products with unqualified indicators as needed, thereby improving product quality. The optical zero-position correction method of this disclosure can also be applied to product testing and maintenance, providing convenience for product testing and maintenance.

[0056] The optical zero-position correction instrument used in the optical zero-position correction method of this embodiment can be implemented based on the above embodiment, and will not be described again here.

[0057] The optical zero-position correction instrument and method provided in this disclosure have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this disclosure. The descriptions of the embodiments above are only for the purpose of helping to understand the core ideas of this disclosure. It should be noted that those skilled in the art can make various improvements and modifications to this disclosure without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this disclosure.

Claims

1. An optical zero-position correction instrument for calibrating a sight (100), characterized in that, include: Theodolite (1); Base plate (2); The reticle assembly (3) includes a flat plate (31) and a plurality of reticles (32) disposed on the flat plate (31). The first bracket (4) is fixedly installed on the base plate (2), and a limit block (41) is fixedly installed thereon. The second support (5) is fixedly mounted on the base plate (2). The second support (5) is equipped with a field instrument (51) for adjusting the height of the field instrument (51) when the reticle assembly (3) is placed on the first support (4) and limited by the limiting block (41), so that the differentiation center of the theodolite (1), the differentiation center of the field instrument (51) and the differentiation centers of the multiple reticles (32) are located on the same straight line. A rocker arm limiting seat (6) is disposed on the base plate (2) and connected to the rocker arm (110) of the aiming scope (100). It is used to limit the rocker arm (110) of the aiming scope (100) when it is placed on the first bracket (4) and limited by the limiting block (41). When the rocker arm (110) of the aiming scope (100) rotates so that the field of view refraction center observed through the eyepiece of the aiming scope (100) coincides with the eyepiece refraction center of the aiming scope (100), it is fixed relative to the base plate (2) to limit the rotation of the rocker arm (110) of the aiming scope (100). The rocker arm limiting seat (6) includes a rocker arm limiting magnetic seat (61), which is attracted to the base plate (2) in the open state; a third sleeve (62) is fixedly provided on the rocker arm limiting magnetic seat (61); the third sleeve (62) is sleeved on the third connecting rod (63); the third connecting rod (63) is fixedly connected to a transition plate (64); the transition plate (64) is fixedly connected to a bearing sleeve (65), which is sleeved on the bearing (120) of the rocker arm (110); the bearing (120) is sleeved on a first rotating shaft (130), which is located at one end of the rocker arm (110), and a second rotating shaft (140) is located at the other end of the rocker arm (110). The scope comprehensive tester (7) is connected to the scope (100). When the scope (100) is placed on the first bracket (4) and limited by the limiting block (41), the field of view differentiation center observed through the eyepiece of the scope (100) coincides with the eyepiece differentiation center of the scope (100). When the rocker arm (110) of the scope (100) is limited by the rocker arm limiting seat (6), the correspondence between the position of the rotary transformer of the scope (100) and the field of view differentiation center in the scope (100) is corrected. The current position of the rotary transformer of the scope (100) is taken as the position corresponding to the optical zero position.

2. The optical zero-position calibrator as described in claim 1, characterized in that, A reticle magnetic seat (33) is provided on the plate (31). When the reticle magnetic seat (33) is in the open state, it is attracted to the plate (31). A first sleeve (34) is fixedly provided on the reticle magnetic seat (33). The first sleeve (34) has a first limiting hole (35). The first sleeve (34) is sleeved on the first connecting rod (36). The first connecting rod (36) is fixedly connected to the reticle (32). When the first limiting bolt passing through the first limiting hole (35) contacts the first connecting rod (36), the relative movement between the first connecting rod (36) and the first sleeve (34) is restricted.

3. The optical zero-position calibrator as described in claim 1, characterized in that, The first support (4) includes: The first upright plate (42) is fixedly installed on the base plate (2); The first horizontal plate (43) is fixedly connected to the two first vertical plates (42). The first horizontal plate (43) is fixedly provided with the limiting block (41). The limiting block (41) has a ball groove and a ball (44) is provided in the ball groove.

4. The optical zero-position calibrator as described in claim 1, characterized in that, The second support (5) includes: The second upright plate (52) is fixedly installed on the base plate (2); The second horizontal plate (53) is fixedly connected to the two second vertical plates (52); The second sleeve (54) is fixedly connected to the second horizontal plate (53). The second sleeve (54) is sleeved on the second connecting rod (55). The second connecting rod (55) is fixedly connected to the field instrument (51). The second sleeve (54) has a second limiting hole (56). When the second limiting bolt passing through the second limiting hole (56) contacts the second connecting rod (55), the relative movement between the second connecting rod (55) and the second sleeve (54) is restricted.

5. An optical zero-position correction method based on the optical zero-position corrector according to any one of claims 1 to 4, characterized in that, include: Place the reticle assembly (3) on the first support (4); restrict the position of the reticle assembly (3) by the limiting block (41) on the first support (4); adjust the height of the field instrument (51) on the second support (5) so that the differentiation center of the theodolite (1), the differentiation center of the field instrument (51) and the differentiation centers of the multiple reticles (32) are on the same straight line; Remove the reticle assembly (3) from the first bracket (4); place the sight (100) on the first bracket (4) and restrict the position of the sight (100) by the limiting block (41); swing the rocker arm (110) of the sight (100) so that the field of view refraction center observed through the eyepiece of the sight (100) coincides with the eyepiece refraction center of the sight (100); fix the rocker arm limiting seat (6) connected to the rocker arm (110) on the base plate (2) to restrict the rotation of the rocker arm (110); By using the scope comprehensive tester (7), the correspondence between the position of the rotary transformer of the scope (100) and the predicted optical angle of the field of view differentiation center in the scope (100) is corrected, and the current position of the rotary transformer of the scope (100) is taken as the position corresponding to the optical zero position.

6. The optical null-position correction method as described in claim 5, characterized in that, Also includes: Release the rocker arm limiting seat (6) from the base plate (2); Rotate the rocker arm (110) and obtain the position of the first rotary transformer of the sight (100); Obtain the first visual angle of the field of view refraction center relative to the eyepiece refraction center of the aiming scope (100) as observed through the eyepiece of the aiming scope (100); The scope comprehensive tester (7) calculates the first predicted optical angle corresponding to the position of the first rotary transformer based on the correspondence between the position of the rotary transformer of the scope (100) and the predicted optical angle of the field of view differentiation center in the scope (100). The difference between the first visually estimated angle and the first predicted optical angle is calculated as the synchronization error.

7. The optical null-position correction method as described in claim 5, characterized in that, Also includes: The aiming scope (100) is switched to image stabilization mode so that the position of the rotary transformer of the aiming scope (100) can be controlled by the aiming scope integrated tester (7); Based on the correspondence, calculate the position of the second rotary transformer corresponding to the second predicted optical angle; The scope integrated tester (7) controls the rotary transformer of the scope (100) to reach the position of the second rotary transformer; Obtain the second visual angle of the field of view differentiation center as observed through the aiming scope (100); The difference between the second predicted optical angle and the second visually estimated angle is calculated as the angle measurement accuracy.

8. The optical null-position correction method as described in claim 5, characterized in that, Also includes: The sight (100) is switched to the instrumentation mode so as to control the position of the rotary transformer of the sight (100) via the rocker arm (110); Rotate the rocker arm (110) so that the field of view differentiation center observed by the aiming scope (100) is at the third visual angle; The scope integrated tester (7) obtains the position of the third rotary transformer of the scope (100); Based on the correspondence, a third predicted optical angle corresponding to the position of the third rotary transformer is determined; The difference between the third visually estimated angle and the third predicted optical angle is calculated as the accuracy of the instrument.

9. The optical null-position correction method as described in claim 5, characterized in that, Also includes: By rotating the rocker arm (110), the position of the rotary transformer is changed, and the visual angle range of the field of view refraction center relative to the eyepiece refraction center of the aiming scope (100) observed through the eyepiece of the aiming scope (100) is obtained as the aiming range; By rotating the rocker arm (110), the position of the rotary transformer is changed, and the motion trajectory of the field instrument differentiation center observed through the eyepiece of the aiming scope (100) is obtained. The image tilt value is calculated based on the motion trajectory. The aiming scope (100) is removed from the first bracket (4) and subjected to impact and vibration. The aiming scope (100) is then placed back on the first bracket (4), and the position of the aiming scope (100) is restricted by the limiting block (41). The distance between the eyepiece refraction center of the aiming scope (100) and the field of view refraction center observed through the eyepiece of the aiming scope (100) is determined as the zero-position movement amount.

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