Optical axis consistency adjusting device and method

Abstract

The invention discloses an optical axis consistency adjusting device and method. The optical axis consistency adjusting device comprises a frame body, a fixing piece arranged on the frame body, a sliding piece sliding along the fixing piece, a positioning support arranged on the sliding piece, a positioning mandrel arranged on the frame body, a first positioning assembly and a second positioning assembly, and the positioning mandrel, the first positioning assembly and the second positioning assembly are arranged on the positioning support. Through the first positioning assembly and the second positioning assembly, the axis of the positioning mandrel coincides with the optical axis of the lens on the positioning support, the method can achieve adjustment of a zoom lens set and a compensation lens set, and the problems that the optical axis consistency of an optical system needs multiple times of adjustment, the equipment price is high, time is long, the success rate is low, and the cost is high are solved. And batch installation and adjustment cannot be realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of optical systems, and particularly relates to an optical axis consistency adjusting device and method. BACKGROUND

[0002] A variable optical system can realize continuous change of target image size, and has wide application in photoelectric tracking and reconnaissance systems. A multi-view field is switched through a continuous variable mechanism to meet the requirements of the optical system under different use conditions, and has the advantages of large view field target search and tracking and small view field target identification and aiming. During the continuous variable process, if there is a large optical axis deviation or jumping, the tracking target will be lost and the target cannot be accurately aimed and attacked, so the optical axis consistency in the continuous variable optical system is an important index. The optical axis consistency of the commonly used continuous variable optical system is required to be within 2 pixels.

[0003] The continuous variable optical system is usually composed of a front lens group, a variable lens group, a compensation lens group, a focusing lens group and a rear fixed group. The continuous change of the focal length value of the optical system is realized through the regular movement of the variable lens group and the compensation lens group, and the whole process can be realized clearly during the variable process. A wider temperature range is covered through the focusing lens group to ensure that the imaging is clear in the whole temperature range within-40℃ to +70℃ through the axial movement of the focusing lens group.

[0004] In the prior art, a visible light center deviation measuring instrument is used to accurately position the guide rail. The visible light center deviation measuring instrument measures the deviation of the curvature radius of the upper surface of the lens from the rotation reference axis of the visible light center deviation measuring instrument, and the guide rail is finely adjusted by adjusting the guide rail screws connecting the linear guide rail and the mounting surface to meet the positioning accuracy requirements of the guide rail. However, the price is high and it is difficult to realize mass production. The guide rail is directly positioned through the lens center deviation measurement, which is only applicable to the optical system with only one lens on one guide rail. In actual products, the guide rail is fixed to the main housing through several screws, and the screws are mainly used for fixing. The center deviation measuring instrument has high precision, and it is often difficult to adjust the center deviation of the lens group through the screws. In a study on the installation and adjustment technology of a continuous zoom television optical system, a mechanical centering device is used to make the center axis of the moving component parallel to the guide rod axis, and then a double light path center deviation measuring instrument is used to adjust the coaxiality based on the projection optical axis of the front lens group. However, the mechanical centering device is designed based on the lens barrel of the front lens group, and the focusing group is not considered, so the whole stroke adjustment of the variable group and the compensation group cannot be realized. In addition, the center deviation measuring instrument is also needed during the debugging process, and mass production cannot be realized, and the efficiency is low.

[0005] A kind of infrared light machine system is in the observation field of view switching, continuous zoom, zoom process optical axis consistency debugging method, debugging method needs to be in order, in narrow field of view or long focus field of view, wide field of view or short focus field of view, middle field of view or middle focus field of view, narrow field of view or long focus field of view, wide field of view or short focus field of view, optical axis consistency is adjusted, but at least 6 times field of view needs to be switched, and the precision of optical axis consistency is improved, needs to be repeated multiple times, and the efficiency is relatively low.

[0006] Therefore, it is urgent to develop a kind of optical axis consistency adjustment device and method. SUMMARY

[0007] In view of the above problems, the present application provides an optical axis consistency adjustment device and method, and the technical scheme adopted by the embodiments of the present application is as follows.

[0008] In one aspect, the present application provides an optical axis consistency adjustment device, comprising: a frame; a fixing member provided on the frame; a sliding member sliding along the fixing member; a positioning support provided on the sliding member and a positioning mandrel provided on the frame; a first positioning assembly for positioning the fixing member; a second positioning assembly provided on the positioning support; the axis of the positioning mandrel coincides with the optical axis of the lens on the positioning support through the first positioning assembly and the second positioning assembly. The first positioning assembly is used to make the fixing member parallel to the axis of the positioning mandrel along the straight line in the sliding direction of the sliding member.

[0009] In one specific embodiment, the frame comprises a base, a first support assembly provided on the base and a second support assembly provided on the base; the first support assembly comprises a focusing lens group centering mandrel sleeve support and a focusing lens group centering mandrel sleeve; the second support assembly comprises a front lens group centering mandrel sleeve support and a front lens group centering mandrel sleeve; the focusing lens group centering mandrel sleeve is arranged on the focusing lens group centering mandrel sleeve support; the front lens group centering mandrel sleeve is arranged on the front lens group centering mandrel sleeve support. The first support assembly and the second support assembly are used to fix the positioning mandrel on the frame.

[0010] In one specific embodiment, the fixing member is a guide rail or a lead screw; the sliding member is a sliding block or a lead screw; the guide rail is arranged on the base, and a plurality of sliding blocks are arranged on the guide rail; or, the lead screw is arranged on the base, and a plurality of lead screws are arranged on the lead screw. The movement of the components mounted on the sliding block or the lead screw is realized by the sliding of the sliding block or the lead screw.

[0011] In one specific embodiment, the positioning mandrel is arranged through the focusing lens group centering mandrel sleeve and the front lens group centering mandrel sleeve. The positioning mandrel is fixed on the frame by the focusing lens group centering mandrel sleeve and the front lens group centering mandrel sleeve.

[0012] In one specific embodiment, the first positioning assembly is a fixing member positioning bracket for positioning the fixing member and the positioning mandrel. The fixing member positioning bracket is configured such that the fixing member is parallel to the axis of the positioning mandrel along a straight line in the sliding direction of the sliding member.

[0013] In one specific embodiment, the positioning bracket comprises a first lens group bracket and a second lens group bracket. The first lens group bracket is a zoom lens group bracket. The second lens group bracket is a compensation lens group bracket. The zoom lens group bracket and the compensation lens group bracket are both provided with a positioning boss surface. The positioning boss surface is arranged at the bottom of the zoom lens group bracket and the compensation lens group bracket. The positioning boss surface is integrally formed with the zoom lens group bracket or the compensation lens group bracket. The zoom lens group bracket and the compensation lens group bracket are positioned on the sliding blocks through the positioning boss surface.

[0014] The zoom lens group bracket and the compensation lens group bracket are positioned on the sliding blocks through the positioning boss surface, so that the zoom lens group bracket and the compensation lens group bracket can slide relative to the fixing member.

[0015] In one specific embodiment, the second positioning assembly is arranged on the positioning mandrel. The second positioning assembly cooperates with the positioning mandrel to position the optical axis of the lens on the second positioning assembly.

[0016] In one specific embodiment, the second positioning assembly comprises a first centering shaft sleeve and a second centering shaft sleeve. The first centering shaft sleeve is a zoom centering shaft sleeve arranged on the zoom lens group bracket. The second centering shaft sleeve is a compensation centering shaft sleeve arranged on the compensation lens group bracket. The first centering shaft sleeve and the second centering shaft sleeve cooperate with the positioning mandrel to finely adjust the position of the optical axis of the lens on the second positioning assembly.

[0017] In one specific embodiment, the zoom lens group bracket and the compensation lens group bracket are arranged on the sliding blocks or the lead screws. The zoom lens group bracket and the compensation lens group bracket can slide on the guide rails or the lead screws through the sliding blocks or the lead screws.

[0018] In another aspect, the application also provides an optical axis consistency adjustment method, characterized in that the method is used for the optical axis consistency adjustment device, and the steps are as follows.

[0019] S1: the center line of the mounting hole on one side of the frame body and the center line of the mounting hole on the other side are connected to form a reference axis;

[0020] S2: the positioning mandrel is arranged in the mounting hole on one side of the frame body and the mounting hole on the other side, so that the axis of the positioning mandrel coincides with the reference axis;

[0021] S3: the first positioning assembly is used to make the fixing member parallel to the axis of the positioning mandrel along a straight line in the sliding direction of the sliding member;

[0022] S4: fixing the positioning mandrel and the fixing member on the frame body, and removing the first positioning assembly;

[0023] S5: threading the second positioning assembly on the positioning mandrel, and fixing the second positioning assembly on the sliding member;

[0024] S6: aligning the optical axis of the lens on the positioning support, the axis of the positioning mandrel and the reference axis by the second positioning assembly and the positioning mandrel.

[0025] The technical scheme provided by the embodiment of the application has at least the following beneficial effects: the adjustment of the zoom lens group and the compensation lens group on the guide rail solves the problem that the optical axis consistency of the continuous zoom optical system needs to be adjusted for multiple times, which is time-consuming and has a low success rate, and cannot be mass produced and adjusted; the mechanical axis centering device reduces the use of the high-priced center deviation measuring instrument, reduces the production and adjustment cost, and facilitates mass production and adjustment; the special adjustment link is designed to improve the success rate of one-time adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 : the zoom / compensation lens group optical axis consistency adjustment schematic diagram of the embodiment of the application;

[0027] Figure 2 : the fixing member and the positioning mandrel adjustment schematic diagram of the embodiment of the application;

[0028] Figure 3 : the zoom / compensation lens group optical axis consistency adjustment sectional view schematic diagram of the embodiment of the application;

[0029] Figure 4 : the guide rail positioning adjustment schematic diagram of the embodiment of the application;

[0030] Figure 5 : the eccentric shaft sleeve installation schematic diagram of the embodiment of the application;

[0031] Figure 6 : the zoom / compensation lens group installation schematic diagram of the embodiment of the application;

[0032] Figure 7 : the optical axis consistency adjustment method flowchart of the embodiment of the application. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the application more clear, the embodiment of the application will be further described in detail below with reference to the drawings.

[0034] The term "a plurality" as referred to herein means two or more. In the description of the application, it is to be understood that the orientations or positional relationships indicated by the terms "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are merely intended for convenience of description and simplification of description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the application. In addition, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality" is two or more, unless otherwise specified.

[0035] In the description of the application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0036] The following will be described in detail in combination with the accompanying drawings Figures 1-7 The application will be further described in detail.

[0037] The application provides an optical axis consistency adjusting device, comprising: a frame body 100, a fixing piece 200 arranged on the frame body 100, a sliding piece 300 sliding along the fixing piece 200, a positioning support 400 arranged on the sliding piece 300, a positioning mandrel 500 arranged on the frame body 100, a first positioning assembly 600, and a second positioning assembly 700. The fixing piece 200 is arranged on the frame body 100 through a detachable structure, the sliding piece 300 and the fixing piece 200 are slidingly connected, the positioning support 400 is arranged on the sliding piece 300 through a detachable structure, the first positioning assembly 600 is used for positioning the fixing piece 200, and the second positioning assembly 700 is arranged on the positioning support 400. The axial center line of the positioning mandrel 500 coincides with the optical axial center line of a lens (zooming / compensation lens group) on the positioning support 400 through positioning of the first positioning assembly 600 and the second positioning assembly 700, and the fixing piece 200 is parallel to the axial center line of the positioning mandrel 500 along a straight line in the sliding direction of the sliding piece 300 through the first positioning assembly 600.

[0038] The front lens group, the variable magnification lens group, the compensation lens group and the focusing lens group are coaxial light paths, wherein the variable magnification lens group and the compensation lens group are lens groups that move axially in a large range along the reference axis, and the coaxiality is determined by the coaxiality of the sliding member 300 and the optical axis and the accuracy of the coaxiality during the axial movement of the lens group moving in a large range. The assembly process mainly consists of two parts: guide rail and optical axis positioning assembly, variable magnification / compensation lens group optical axis consistency assembly.

[0039] The guide rail and optical axis positioning assembly is as follows: Figure 2 The assembly diagram of the fixed member and the positioning mandrel of the embodiment of the application is as follows: Figure 4 The guide rail positioning assembly diagram of the embodiment of the application is shown in the following schematic diagram.

[0040] The variable magnification lens group and the compensation lens group are fixed on the sliding member 300, and the parallelism of the fixed member 200 and the optical axis is the primary guarantee target of the optical axis consistency. For the assembly requirement of the high-precision fixed member 200, a special fixed member positioning support 600 is designed, a mechanical shaft positioning scheme is adopted, the center line of the installation hole of the front lens group centering shaft sleeve support 131 and the focusing lens group centering shaft sleeve support 121 is taken as the reference axis, the optical axis of the lens on the positioning support 400 is approximately equivalent positioned by the reference axis, the centering shaft sleeve (including the front lens group centering shaft sleeve 132 and the focusing lens group centering shaft sleeve 122) and the positioning mandrel 500 are designed, the upper part of the fixed member positioning support is a shaft positioning groove, and the lower part of the two sides is a fixed member 200 positioning surface, the positioning surface is parallel to the shaft positioning groove, the parallelism of the straight line in the sliding direction of the fixed member along the sliding member 300 and the reference axis is ensured by the positioning surface of the fixed member positioning support, and the consistency of the moving direction axis of the sliding member 300 and the reference axis during the variable magnification process is ensured.

[0041] The frame 100 includes a base 110, a first support assembly 120 disposed on the base 110, and a second support assembly 130 disposed on the base 110. The first support assembly 120 includes a focusing lens group centering shaft sleeve support 121 and a focusing lens group centering shaft sleeve 122, and the second support assembly 130 includes a front lens group centering shaft sleeve support 131 and a front lens group centering shaft sleeve 132. The focusing lens group centering shaft sleeve 122 is disposed on the focusing lens group centering shaft sleeve support 121, and the front lens group centering shaft sleeve 132 is disposed on the front lens group centering shaft sleeve support 131.

[0042] The first support assembly 120 and the second support assembly 130 are used to fix the positioning mandrel 500 on the frame 100.

[0043] The positioning mandrel 500 is disposed on the focusing lens group centering shaft sleeve 122 and the front lens group centering shaft sleeve 132.

[0044] The positioning mandrel 500 is fixed on the frame 100 by the focusing lens group centering shaft sleeve 122 and the front lens group centering shaft sleeve 132.

[0045] The fixing member 200 is a guide rail, and the sliding member 300 is a sliding block. The guide rail is arranged on the base 110, and a plurality of sliding blocks are arranged on the guide rail. Movement of the components arranged on the sliding blocks or the lead screws is realized through sliding of the sliding blocks or the lead screws.

[0046] The first positioning assembly 600 is the fixing member positioning support 400, which is used for positioning the fixing member 200 and the positioning mandrel 500.

[0047] Through the fixing member positioning support 400, the fixing member 200 is parallel to the axis of the positioning mandrel 500 along the straight line in the sliding direction of the sliding member 300.

[0048] The zooming / compensation lens group optical axis consistency assembly is shown in FIG. 1. Figure 1 The zooming / compensation lens group optical axis consistency assembly of the embodiment of the present application is shown in FIG. 1. Figure 3 The zooming / compensation lens group optical axis consistency assembly of the embodiment of the present application is shown in FIG. 1.

[0049] The center connecting line of the former lens group centering shaft sleeve support 131 and the focusing lens group centering shaft sleeve support 121 is used as the reference axis. The optical axis of the lens on the positioning support 400 is approximately equivalent to the reference axis. The positioning mandrel 500 is designed with the axis of the reference axis as the axis of the positioning mandrel. The zooming centering shaft sleeve and the compensation centering shaft sleeve are arranged on the zooming lens group support 411 and the compensation lens group support 421. The zooming centering shaft sleeve and the compensation centering shaft sleeve are separated by a 0.5 mm gap in the circumferential direction, which is used as the centering allowance (for adjusting the position of the optical axis of the lens on the positioning support 400). The positioning mandrel 500 is matched with the zooming centering shaft sleeve and the compensation centering shaft sleeve (i.e., the positioning mandrel just passes through the zooming centering shaft sleeve and the compensation centering shaft sleeve). The small gap between the positioning mandrel 500 and the zooming centering shaft sleeve and the compensation centering shaft sleeve is realized through the turning process. The gap matching refers to the matching with a gap (including the minimum gap equal to zero). At this time, the tolerance band of the hole on the zooming centering shaft sleeve and the compensation centering shaft sleeve is above the tolerance band of the positioning mandrel 500. The actual size of the hole on the zooming centering shaft sleeve and the compensation centering shaft sleeve is always greater than or equal to the actual size of the positioning mandrel 500.

[0050] In assembly, the variable magnification centering axle sleeve and the compensation centering axle sleeve pass through the positioning mandrel 500 to ensure smooth axial movement along the reference axis in the entire stroke range. The variable magnification centering axle sleeve and the compensation centering axle sleeve are connected to the variable magnification lens group support and the compensation lens group support through a detachable structure. To make the structure more stable, the screw is preferably used for fixing and tightening. Then the variable magnification lens frame and the compensation lens frame are respectively fixed on the variable magnification centering axle sleeve and the compensation centering axle sleeve. The variable magnification lens frame and the compensation lens frame are matched with the variable magnification centering axle sleeve and the compensation centering axle sleeve through the centering turning process to realize small gap fitting. That is, the size of the hole on the variable magnification centering axle sleeve is always greater than or equal to the actual size of the variable magnification lens frame, and the size of the hole on the compensation centering axle sleeve is always greater than or equal to the actual size of the compensation lens frame. In this way, the optical axis of the variable magnification lens group and the compensation lens group is coaxial with the reference axis in the entire stroke range, and the consistency of the optical axis is ensured during the variable magnification process.

[0051] The positioning support 400 comprises a first lens group support and a second lens group support. The first lens group support is a variable magnification lens group support 411. The second lens group support is a compensation lens group support 421. The variable magnification lens group support 411 and the compensation lens group support 421 are both provided with a positioning boss surface 412. The positioning boss surface 412 is located at the bottom of the variable magnification lens group support 411 and the compensation lens group support 421. The variable magnification lens group support 411 and the compensation lens group support 421 are arranged on a plurality of sliders through the positioning boss surface 412. The variable magnification lens group support 411 and the compensation lens group support 421 can slide relative to the fixed part 200.

[0052] The positioning boss surface 412 is arranged at the bottom of the variable magnification lens group support 411 and the compensation lens group support 421. The positioning boss surface 412 is integrally formed with the variable magnification lens group support 411 and the compensation lens group support 421. During installation, the positioning boss surface 412 abuts against the sliding part 300 to reduce system error.

[0053] The second positioning assembly 700 is arranged on the positioning mandrel 500. The second positioning assembly 700 cooperates with the positioning mandrel 500 to position the optical axis of the lens on the second positioning assembly 700. The second positioning assembly 700 comprises a first centering axle sleeve 720 and a second centering axle sleeve 710. The first centering axle sleeve 720 is a variable magnification centering axle sleeve arranged on the variable magnification lens group support 411. The second centering axle sleeve 710 is a compensation centering axle sleeve arranged on the compensation lens group support 421.

[0054] The first centering axle sleeve and the second centering axle sleeve cooperate with the positioning mandrel 500 to finely adjust the position of the optical axis of the lens on the second positioning assembly 700.

[0055] The variable magnification lens group support 411 and the compensation lens group support 421 are arranged on several sliders or lead screws.

[0056] The variable magnification lens group support 411 and the compensation lens group support 421 can slide relatively on the guide rails or lead screws through the sliders or lead screws.

[0057] The application provides a variable magnification and compensation lens group mounting method. Figure 6 The variable magnification and compensation lens group mounting method is shown in the schematic diagram of the embodiment of the application.

[0058] The variable magnification lens frame and the compensation lens frame are mounted into the variable magnification lens frame and the compensation lens frame through the centering turning process. Figure 6 The detachable structure is arranged in the respective centering shaft sleeve in the direction shown, and 2 groups of M3 screws are preferably used for fixation to make the structure more stable, and no other adjustment is needed.

[0059] The application also provides an optical axis consistency adjustment method. Figure 7 The optical axis consistency adjustment method is shown in the flowchart of the embodiment of the application.

[0060] The steps are as follows, S1: the center line of the mounting hole on one side of the frame body and the center line of the mounting hole on the other side are connected to form a reference axis; S2: the positioning mandrel 500 is arranged in the mounting hole on one side of the frame body 100 and the mounting hole on the other side, so that the axis of the positioning mandrel 500 coincides with the reference axis; S3: the first positioning assembly 600 is used to make the straight line in the sliding direction of the fixing member 200 parallel to the axis of the positioning mandrel 500; S4: the positioning mandrel 500 and the fixing member 200 are fixed on the frame body 100, and the first positioning assembly 600 is removed; S5: the second positioning assembly 700 is arranged on the positioning mandrel 500, and the second positioning assembly 700 is fixed on the sliding member 300; S6: the second positioning assembly 700 and the positioning mandrel 500 are used to make the optical axis of the lens on the positioning support 400 coincide with the axis of the positioning mandrel 500.

[0061] Before installation, the front lens group centering shaft sleeve and the focusing lens group centering shaft sleeve are ensured to be tightly fitted with the corresponding holes on the frame body, that is, the front lens group centering shaft sleeve and the focusing lens group centering shaft sleeve are respectively fitted with the front lens group centering shaft sleeve support and the focusing lens group centering shaft sleeve support with a small gap, the positioning mandrel 500 is inserted, and the positioning mandrel 500 is ensured to be tightly fitted with the front lens group centering shaft sleeve and the focusing lens group centering shaft sleeve, and a small gap is achieved. At this time, the center line of the frame body front lens group centering shaft sleeve support and the focusing lens group centering shaft sleeve support mounting hole is the reference axis, which is approximately equal to the optical axis of the lens on the positioning support 400. The upper part of the fixing part positioning support is a shaft positioning groove, and the center axis of the positioning mandrel is transmitted to the guide rail positioning support through the locking nut. The lower part of the guide rail positioning support is a guide rail positioning surface, and the positioning surface is parallel to the shaft positioning groove. The guide rail positioning surface is tightly attached to the guide rail positioning surface of the guide rail positioning support, so as to ensure that the straight line of the fixing part 200 along the sliding direction of the sliding part 300 is parallel to the reference axis, and the optical axis of the lens on the positioning support 400 is consistent with the reference axis during zooming.

[0062] The positioning mandrel 500 used for positioning the guide rail and the optical axis during assembly and adjustment and the positioning mandrel 500 used for assembly and adjustment of the consistency of the zooming / compensation lens group optical axis can be different positioning mandrels, but the manufacturing methods are the same, and the reference axis is used as the axis center line of the positioning mandrel 500.

[0063] The fixing part and the sliding part can be replaced by a lead screw and a lead screw, respectively. For example, the guide rail can be one, and the fixing part positioning support needs to be adaptively turned.

[0064] The technical scheme provided by the embodiment of the application has at least the following beneficial effects. The adjustment of the zooming lens group and the compensation lens group on the guide rail solves the problem of long time and low success rate of multiple adjustment of the optical axis consistency of the continuous zooming optical system, and the problem of batch assembly and adjustment cannot be solved. Through the mechanical shaft centering device, the use of the high-priced center deviation measuring instrument is reduced, the production and assembly cost is reduced, and batch production and assembly of products are facilitated. Through the design of a special adjustment link, the success rate of one-time adjustment is improved.

[0065] The specific embodiment is only an explanation of the application, and is not a limitation of the application. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as the modifications are within the scope of the claims of the application, they are protected by the patent law.

Claims

1. An optical axis uniformity adjustment device, characterized by comprising: a first optical axis uniformity adjustment device; a second optical axis uniformity adjustment device; and a third optical axis uniformity adjustment device. The device comprises: a frame (100); a fixing member (200) arranged on the frame (100); a sliding member (300) sliding along the fixing member (200); a positioning support (400) arranged on the sliding member (300) and a positioning mandrel (500) arranged on the frame (100); a first positioning assembly (600) for positioning the fixing member (200); a second positioning assembly (700) arranged on the positioning support (400); the optical axis of the lens on the positioning support (400) coincides with the axis of the positioning mandrel (500) through the first positioning assembly (600) and the second positioning assembly (700).

2. The optical axis alignment device of claim 1, wherein: The frame (100) further comprises a base (110), a first support assembly (120) arranged on the base, and a second support assembly (130) arranged on the base (110); the first support assembly (120) comprises a focusing lens group centering mandrel support (121) and a focusing lens group centering mandrel (122); the second support assembly (130) comprises a front lens group centering mandrel support (131) and a front lens group centering mandrel (132); the focusing lens group centering mandrel (122) is arranged on the focusing lens group centering mandrel support (121); the front lens group centering mandrel (132) is arranged on the front lens group centering mandrel support (131).

3. The optical axis consistency adjusting device according to claim 2, wherein: the fixing member (200) is a guide rail or a lead screw; the sliding member (300) is a sliding block or a lead screw; the guide rail is arranged on the base (110), and a plurality of sliding blocks are arranged on the guide rail; or, the lead screw is arranged on the base (110), and a plurality of lead screws are arranged on the lead screw.

4. The optical axis uniformity adjustment device according to claim 2, characterized by: the positioning mandrel (500) is arranged on the focusing lens group centering mandrel (122) and the front lens group centering mandrel (132).

5. The optical axis alignment device of claim 1, wherein: the first positioning assembly (600) is a fixing member positioning support for positioning the fixing member (200) and the positioning mandrel (500).

6. The optical axis uniformity adjustment device according to claim 3, wherein the positioning support (400) comprises a first lens group support (410) and a second lens group support (420); the first lens group support is a zoom lens group support (411); the second lens group support is a compensation lens group support (421); the zoom lens group support (411) and the compensation lens group support (421) are both provided with a positioning boss surface (412); the positioning boss surface (412) is arranged at the bottom of the zoom lens group support (411) and the compensation lens group support (421), and the positioning boss surface (412) is integrally formed with the zoom lens group support (411) or the compensation lens group support (421); the zoom lens group support (411) and the compensation lens group support (421) are arranged on a plurality of sliding blocks through the positioning boss surface.

7. The optical axis uniformity adjustment device according to claim 3, characterized by: the second positioning assembly (700) is arranged on the positioning mandrel (500).

8. The optical axis uniformity adjustment device according to claim 7, wherein The second positioning assembly (700) comprises a first centering shaft sleeve (720) and a second centering shaft sleeve (710); The first centering shaft sleeve (720) is a variable magnification centering shaft sleeve, which is arranged on the variable magnification lens group support (411); The second centering shaft sleeve (710) is a compensation centering shaft sleeve, which is arranged on the compensation lens group support (421).

9. The optical axis uniformity adjustment device according to claim 8, wherein The variable magnification lens group support (411) and the compensation lens group support (421) are arranged on the plurality of sliders.

10. A method for optical axis consistency calibration, characterized in that: The method is used for the optical axis consistency adjusting device in any one of claims 1-9, and the steps are as follows, S1: the center line of the mounting hole on one side of the frame (100) and the mounting hole on the other side is the reference axis; S2: the positioning mandrel (500) is arranged in the mounting hole on one side and the mounting hole on the other side of the frame (100), so that the axis of the positioning mandrel (500) and the reference axis are coincident; S3: the first positioning assembly (600) is used to make the straight line in the sliding direction of the sliding part (300) and the axis of the positioning mandrel (500) parallel; S4: the positioning mandrel (500) and the fixed part (200) are fixed on the frame (100), and the first positioning assembly (600) is removed; S5: the second positioning assembly (700) is arranged on the positioning mandrel (500), and the second positioning assembly (700) is fixed on the sliding part (300); S6: the second positioning assembly (700) and the positioning mandrel (500) are used to make the optical axis of the lens on the positioning support (400), the axis of the positioning mandrel (500) and the reference axis coincident.

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