Auxiliary installation and adjustment system for infrared lens

Abstract

The utility model discloses an auxiliary installation and adjustment system for an infrared lens, and the system comprises a collimator system which is used for providing a heat source and parallel light; the optical platform is used for placing the collimator system; an infrared lens; the lens bracket is used for mounting the infrared lens, so that the perpendicular bisector of the infrared lens is perpendicular to the perpendicular bisector of the light outlet of the collimator system; the reflecting mirror is arranged above the infrared lens; and the reflector bracket is used for mounting the reflector, so that the parallel light emitted by the collimator system is reflected to the infrared lens. According to the scheme, the light emitted by the collimator system is changed from the horizontal direction to the vertical direction through the reflector, and then the light is reflected to the infrared lens. According to the scheme, the influence caused by inclination of the lens on the infrared lens in the installation and adjustment process can be reduced, the installation and adjustment efficiency is improved, and the imaging quality can be observed in real time.

Description

Technical Field

[0001] The present disclosure generally relates to the field of infrared lens technology, and more specifically, to an infrared lens auxiliary assembly and adjustment system. Background Art

[0002] Infrared lens is one of the key components in infrared imaging technology and is widely used in military, security, aerospace, medical and industrial fields. The installation and adjustment of infrared lens mainly involves the precise centering and positioning control of optical components. In other words, how to ensure the consistency of the optical axis of optical components and other components, as well as the appropriate spatial spacing are the biggest problems encountered during the installation and adjustment process.

[0003] The common basic scheme for adjusting infrared lenses at present is usually to use the mechanical housing of the lens as the reference and completely rely on mechanical precision to ensure the image quality of the lens, or to use a dual-optical path centering instrument to center each single side of the lens. For example, a method for adjusting infrared lenses with publication number CN110908132A controls the position difference or angle difference between the tooling mirror assembly and the reference, and performs assembly and centering of the infrared lens after adjustment, but the requirements for the grinding of the tooling mirror are high and the time efficiency is low. For another example, a method for adjusting infrared lenses with publication number CN102998767A uses a dual-optical path centering instrument to measure the spherical center image shake of the two mirror surfaces of the infrared single lens assembly, adjusts the translation and tilt of the infrared single lens assembly and monitors the spherical center image shake, and installs each infrared single lens assembly into the lens barrel in turn to complete the lens adjustment. The dual-optical path system improves the accuracy of infrared lens adjustment, but the optical system still requires a high-precision lens mechanical housing to ensure the image quality of the optical system, and the adjustment time efficiency is low.

[0004] In view of this, there is an urgent need to provide an infrared lens auxiliary assembly and adjustment system solution to improve the assembly and adjustment efficiency and imaging quality of the infrared lens. Utility Model Content

[0005] In order to at least solve one or more of the technical problems mentioned above, the present disclosure proposes an infrared lens auxiliary assembly and adjustment system solution in multiple aspects.

[0006] In the first aspect, the present disclosure provides an infrared lens auxiliary adjustment system, including: a collimator system for providing a heat source and parallel light; an optical platform for placing the collimator system; an infrared lens; a lens bracket for mounting the infrared lens so that the midpoint perpendicular line of the infrared lens and the midpoint perpendicular line of the light outlet of the collimator system are perpendicular to each other; a reflector arranged above the infrared lens; and a reflector bracket for mounting the reflector so that the parallel light emitted by the collimator system is reflected onto the infrared lens.

[0007] In some embodiments, the optical platform is arranged horizontally, and the infrared lens is arranged vertically on the lens bracket;

[0008] The infrared lens is horizontally arranged on the infrared camera lens, and the position of the infrared lens is adjusted to observe the imaging quality.

[0009] In some embodiments, the reflector bracket includes: the reflector bracket is fixedly mounted on the optical platform, and a first reflector bracket is fixedly mounted on the optical platform and has a certain extension height in the vertical direction; a sliding mechanism is installed on the upper part of the first reflector bracket; a second reflector bracket is connected to the sliding mechanism, and the reflector is installed on the second reflector bracket; the sliding mechanism approaches or moves away from the parallel light tube system so that the line passing through the center of the reflector and the perpendicular horizontal plane coincides with the midline of the infrared lens.

[0010] In some embodiments, the center of the light outlet of the collimator is on the same horizontal line as the center of the reflector.

[0011] In some embodiments, the second reflector bracket includes a U-shaped connector, and the end of the U-shaped connector opposite to the open end is rotatably connected to the sliding mechanism; the reflector is installed on a reflector fixing tool, and the two ends of the reflector fixing tool are respectively connected to the two side walls of the U-shaped connector.

[0012] In some embodiments, the U-shaped connector has a rotatable buckle and an angle fixing member that pass through the side wall; the rotatable buckle includes a rotating part arranged on the outside of the side wall and a mounting part arranged on the inside of the side wall, and the rotating part drives the mounting part to rotate; wherein the reflector fixing tool is fixedly connected to the mounting part; the angle fixing member includes a screw and a nut; the screw passes through the reflector fixing tool and the side wall of the U-shaped connector in turn, and is locked by a nut.

[0013] In some embodiments, the sliding mechanism includes two parallel slide rail slots and two linear slide rails moving along the slide rail slots; one end of the U-shaped connecting member opposite to the open end is rotatably connected to the frame through a rotating connecting member, and the frame is fixedly connected to the linear slide rails.

[0014] In some embodiments, the lens holder is fixedly mounted on an optical platform, and the lens holder includes a holder panel and at least two I-shaped profiles; the holder panel has a hollow portion in the middle for cooperating with a lens fixing tool to fix the infrared lens; the I-shaped profile includes two fixed surfaces symmetrically arranged and a support column connecting the two fixed surfaces; one of the fixed surfaces is fixedly connected to the optical platform, and the other fixed surface is fixedly connected to the holder panel.

[0015] In some embodiments, the infrared lens auxiliary assembly and adjustment system further includes an infrared detector, which is installed directly below the infrared lens via an infrared detector tooling; wherein the infrared detector tooling is fixedly connected to the bracket panel.

[0016] In some embodiments, the infrared detector tooling includes a first height tooling and a second height tooling; the upper end of the first height tooling is fixedly connected to the bracket panel, and has threaded holes arranged at intervals in the height extension direction of the first height tooling, and the distance between the infrared detector and the infrared lens is fixedly adjusted on the second height tooling by screws and different threaded holes; wherein the second height tooling is connected to the infrared detector through a detector fine-tuning mechanism.

[0017] Through the infrared lens auxiliary adjustment system provided above, the disclosed embodiment sets the perpendicular midline of the infrared lens and the perpendicular midline of the collimator light outlet perpendicular to each other, and reflects the light emitted by the collimator to the infrared lens through a reflector. This design can change the light emitted by the collimator system from the horizontal direction to the vertical direction. This design can not only reduce the impact of the lens tilt on the infrared lens during the adjustment process, but also provide great convenience for the fine adjustment of the lens, reduce the skill requirements of the operator, and improve the adjustment efficiency. Further, in some embodiments, the optical platform is set horizontally, the infrared lens is vertically set on the lens bracket, and the infrared lens is horizontally set on the infrared lens. When using, the user adjusts the position of the infrared lens and can observe the imaging quality in real time. Further, in some embodiments, by making the sliding mechanism approach or move away from the collimator system, the line passing through the center of the reflector and the perpendicular midline of the infrared lens coincide with the perpendicular midline, so that the parallel light passing through the reflector can be reflected to the infrared lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description below with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0019] Figure 1 is a structural schematic diagram of an infrared lens auxiliary assembly and adjustment system according to the present disclosure;

[0020] Figure 2 is a schematic diagram of the structure of a first reflector bracket according to the present disclosure;

[0021] Figure 3 is a front view of a second reflector support structure according to the present disclosure;

[0022] Figure 4 is a side view of a second reflector support structure according to the present disclosure;

[0023] Figure 5 is a schematic diagram of a structure in which a lens according to the present disclosure is installed on a lens bracket;

[0024] Figure 6 It is a structural schematic diagram of an infrared detector according to the present disclosure being installed on a lens bracket through an infrared detector tooling.

[0025] In the figure: 100, infrared lens auxiliary assembly and adjustment system;

[0026] 1. Collimator system; 2. Optical platform; 3. Reflector; 4. Reflector bracket; 5. Infrared lens; 6. Lens bracket; 7. Infrared detector; 8. Infrared detector tooling; 9. Detector fine-tuning mechanism;

[0027] 301, reflector fixing tool;

[0028] 401, first reflector bracket; 402, second reflector bracket; 403, sliding mechanism;

[0029] 4021, U-shaped connector; 4022, rotating connector; 4023, frame; 4024, rotatable buckle; 4025, angle fixing member;

[0030] 4031, slide rail slot; 4032, linear slide rail; 4033, locking structure;

[0031] 501, lens fixing tooling;

[0032] 601, bracket panel; 602, I-shaped profile;

[0033] 801, first height tooling; 802, second height tooling. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0035] It should be understood that the terms "include" and "comprising" used in the specification and claims of the present disclosure indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0036] It should also be understood that the terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in this disclosure and claims, the singular forms of "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in this disclosure and claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations.

[0037] As used in this specification and claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0038] The specific implementation of the present disclosure is described in detail below with reference to the accompanying drawings.

[0039] Exemplary application scenarios

[0040] like Figure 1-6 As shown, the utility model provides an infrared lens auxiliary adjustment system, comprising: a collimator system 1, used for providing a heat source and collimated light; an optical platform 2, used for placing the collimator system 1; an infrared lens 5; a lens bracket 6, used for mounting the infrared lens 5, so that the mid-perpendicular line of the infrared lens 5 and the mid-perpendicular line of the light outlet of the collimator system 1 are perpendicular to each other; a reflector 3, arranged above the infrared lens 5; and a reflector bracket 4, used for mounting the reflector, so that the parallel light emitted by the collimator system 1 is reflected onto the infrared lens 5.

[0041] In the solution provided by the utility model, the collimator system 1 and the infrared lens 5 can no longer be arranged on the same horizontal plane, but the collimator system 1 is arranged horizontally, and the infrared lens 5 is arranged vertically so that the lens on the infrared lens 5 is parallel to the horizontal plane, and then the reflector is used to reflect the light emitted by the collimator system 1 to the infrared lens 5. This solution can not only reduce the influence caused by the tilt of the lens on the infrared lens 5 during the installation and adjustment process, but also provide great convenience for the fine adjustment of the lens, reduce the skill requirements of the operator, and improve the installation and adjustment efficiency.

[0042] Example 1

[0043] Based on the above discussion, the disclosed embodiment provides an infrared lens auxiliary adjustment system 100. Specifically, the infrared lens auxiliary adjustment system 100 includes: a collimator system 1, which is used to provide a heat source and collimated light; an optical platform 2, which is used to place the collimator system 1; an infrared lens 5; a lens bracket 6, which is used to install the infrared lens 5, so that the mid-perpendicular line of the infrared lens 5 and the mid-perpendicular line of the light outlet of the collimator system 1 are perpendicular to each other; a reflector 3, which is arranged above the infrared lens 5; and a reflector bracket 4, which is used to install the reflector so that the parallel light emitted by the collimator system 1 is reflected onto the infrared lens 5.

[0044] In the solution of this embodiment, the infrared lens auxiliary adjustment system 100 includes a collimator system 1 placed on an optical platform 2 , an infrared lens 5 mounted on a lens bracket 6 , and a reflector 3 mounted on a reflector bracket 4 .

[0045] The optical platform 2 refers to an operating plane structure with a certain height from the ground, and the plane structure is arranged parallel to the horizontal plane. The collimator system 1 includes a differential black body, a four-rod target and a collimator arranged on the optical platform 2 in sequence.

[0046] In one embodiment, the differential black body has the function of providing uniform thermal radiation, and its effective temperature range is about -70°C-+100°C. When used, the differential black body can transmit the shape of the four-bar target to the collimator through thermal radiation. As an example, the four-bar target can play the role of a target in an optical system. When used, the user can select a four-bar target of a suitable size according to the focal length of the infrared lens 5. Further, the collimator, as a collimation system, has the function of transmitting the thermal radiation of the four-bar target through the self-collimation system to emit parallel light.

[0047] like Figure 1 As shown, the lens holder 6 is arranged on the right side of the collimator system 1, the infrared lens 5 is vertically mounted on the lens holder 6, and the lens is mounted on the infrared lens 5 parallel to the horizontal plane. In other words, the perpendicular midline of the infrared lens 5 and the perpendicular midline of the light outlet of the collimator are perpendicular to each other.

[0048] The reflector is arranged opposite to the light outlet of the collimator and above the infrared lens 5. The reflector irradiates the light emitted by the collimator system 1 onto the reflector 3, and then reflects the light onto the infrared lens 5 through the reflector 3, so that the horizontal light is changed into the vertical light.

[0049] In the solution provided by this embodiment, the differential black body in the collimator system 1 can not only meet the use of installation and adjustment, but also can realize the testing of NETD and MRTD during the installation and adjustment process, meeting the requirements of lens imaging quality. In addition, in this solution, the infrared lens 5 is no longer horizontally arranged, but vertically arranged on the lens bracket 6, and then the reflector 3 folds the optical path, so that the infrared lens installation and adjustment operation is simple, the influence of gravity on the installation and adjustment is reduced, and the installation and adjustment efficiency of the infrared lens is greatly improved.

[0050] In a specific solution of this embodiment: the optical platform 2 is horizontally arranged, the infrared lens 5 is vertically arranged on the lens bracket 6; the infrared lens is horizontally arranged on the infrared lens 5, and the position of the infrared lens is adjusted to observe the imaging quality. That is to say, in this solution, the infrared lens on the infrared lens 5 is on the horizontally arranged infrared lens. When in use, the user fine-tunes the position of the infrared lens, and can observe the imaging quality in real time through the infrared lens by lowering the head, which is more convenient to operate.

[0051] The solution of this embodiment also includes fixing the reflector bracket 4 on the optical platform 2, and fixing the lens bracket 6 on the optical platform 2. In order to achieve movement, a sliding mechanism 403 may be provided on the reflector bracket 4 and / or the lens bracket 6 of this embodiment. Thus, the sliding mechanism 403 can drive the reflector and / or the infrared lens 5 to move, so that the line passing through the center of the reflector and the vertical horizontal plane coincides with the mid-perpendicular line of the infrared lens 5.

[0052] In the solution of this embodiment, the reflector bracket 4 and the lens bracket 6 are both fixedly mounted on the optical platform 2. The sliding mechanism 403 can be arranged only on the reflector bracket 4, or only on the lens bracket 6, or on both the reflector bracket 4 and the lens bracket 6. These three solutions can adjust the infrared lens 5 or the reflector so that the line passing through the center of the reflector and the perpendicular horizontal plane coincide with the mid-perpendicular line of the infrared lens 5.

[0053] In a preferred solution, the optical platform 2 of this embodiment can be an air-floating platform, and the lens bracket 6 and the reflector bracket 4 are both fixedly connected to the air-floating platform.

[0054] The solution of this embodiment also includes that the reflector bracket 4 includes: a first reflector bracket 401, which is fixedly mounted on the optical platform 2 and has a certain extension height in the vertical direction; a sliding mechanism 403 is installed on the upper part of the first reflector bracket; a second reflector bracket 402, which is connected to the sliding mechanism 403, and the reflector is installed on the second reflector bracket 4; the sliding mechanism 403 approaches or moves away from the parallel light tube system 1 so that the line passing through the center of the reflector and the perpendicular bisector of the infrared lens 5 coincide with each other.

[0055] The center of the light outlet of the collimator is on the same horizontal line as the center of the reflector. The second reflector bracket 402 includes a U-shaped connector 4021, and the end of the U-shaped connector 4021 opposite to the open end is rotatably connected to the sliding mechanism 403; the reflector is installed on the reflector fixing fixture 301, and the two ends of the reflector fixing fixture 301 are respectively connected to the two side walls of the U-shaped connector 4021.

[0056] The U-shaped connector 4021 has a rotatable buckle 4024 and an angle fixing member 4025 that pass through the side wall; the rotatable buckle 4024 includes a rotating part arranged on the outer side of the side wall and a mounting part arranged on the inner side of the side wall, and the rotating part drives the mounting part to rotate; wherein the reflector fixing fixture 301 is fixedly connected to the mounting part; the angle fixing member 4025 includes a screw and a nut; the screw passes through the reflector fixing fixture 301 and the side wall of the U-shaped connector 4021 in turn, and is locked by a nut.

[0057] The sliding mechanism 403 includes two parallel sliding rail slots 4031 and two linear sliding rails 4032 moving along the sliding rail slots 4031; the end of the U-shaped connecting member 4021 opposite to the open end is rotatably connected to the frame 4023 through a rotating connecting member 4022, and the frame 4023 is fixedly connected to the linear sliding rails 4032.

[0058] like Figure 1 As shown, in this scheme, the situation where the sliding mechanism 403 is only installed on the reflector bracket 4 is described in detail. The reflector bracket 4 includes a first reflector bracket 401 and a second reflector bracket 402. Among them, the first reflector bracket 4 is a bracket surrounded by a plurality of aluminum alloy profiles connected by screws, and has a certain extension height in the vertical direction, and its height is about 200-800mm. The bottom end of the first reflector bracket 401 is fixedly installed on the optical platform 2, and the sliding mechanism 403 is installed on the upper part. In a specific scheme of this embodiment, the height of the first reflector bracket 401 is 500mm.

[0059] like Figure 2 As shown, the sliding mechanism 403 includes two parallel slide rail slots 4031 and two linear slide rails 4032 moving along the slide rail slots 4031, and the linear slide rails 4032 can move away from or close to the collimator system 1. A locking structure 4033 is provided on the slide rail slots 4031, and is used to fix the linear slide rails 4032 when the linear slide rails 4032 are adjusted to the extended position.

[0060] In the solution of this embodiment, the height of the linear guide rail 4032 is higher than the height of the collimator light outlet, and the center of the collimator light outlet is on the same horizontal line as the center of the reflector. In other words, the center of the collimator light outlet is at the same height as the center of the reflector.

[0061] like Figure 3 and Figure 4 As shown, the second reflector bracket 402 includes a U-shaped connector 4021, and the U-shaped connector 4021 is a first side wall, an end wall and a second side wall connected in sequence. Among them, the first side wall and the second side wall are arranged opposite to each other, and an open end is arranged on the opposite side of the end wall. During installation, the reflector is first installed on the reflector fixing fixture 301, and then the two ends of the reflector fixing fixture 301 are respectively fixedly connected to the first side wall and the second side wall of the U-shaped connector 4021, so that the reflector is connected to the second reflector bracket 402. In this solution, the U-shaped connector 4021 is connected to the linear slide rail 4032 on the sliding mechanism 403. Specifically, the end wall of the U-shaped connector 4021 is rotatably connected to the frame 4023 through the rotating connector 4022, and the frame 4023 is fixedly connected to the linear slide rail 4032. Of course, in other solutions of this embodiment, the U-shaped connector 4021 can be directly fixedly connected to the linear slide rail 4032.

[0062] In this solution, the U-shaped connector 4021 is made of steel, and the size of the opening of the open end thereof is adapted to the size of the light outlet of the collimator, which is approximately 100 mm-400 mm.

[0063] The reflector fixing fixture 301 includes a rectangular plate-like structure with a certain extension length, and has connecting parts arranged perpendicular to the plate-like structure at two extension ends. The side wall of the U-shaped connector 4021 has a rotatable buckle 4024 and an angle fixing member 4025 arranged therethrough. The rotatable buckle 4024 includes a rotating part arranged on the outer side of the side wall and a mounting part arranged on the inner side of the side wall, and the rotating part can drive the mounting part to rotate. During installation, the reflector is first pasted and fixed on the reflector fixing fixture 301, and the reflector fixing fixture 301 is placed between the first side wall and the second side wall of the U-shaped connector 4021. The two connecting parts on the reflector fixing fixture 301 are respectively fixedly connected with the mounting parts arranged on the inner sides of the two side walls of the U-shaped connector 4021. Then, the angle of the reflector is adjusted by rotating the rotating part on the side wall. When the reflector is adjusted to a suitable angle, the screw serving as the angle fixing part 4025 passes through the reflector fixing fixture 301 and the side wall of the U-shaped connecting part 4021 in sequence, and is then tightened by a nut, so that the center of the reflector is in a vertical line with the center of the infrared lens 5.

[0064] When in use, first adjust the extension distance of the linear slide rail 4032 so that the reflector is located directly above the infrared lens 5, and the locking structure 4033 on the slide rail slot 4031 fixes the linear slide rail 4032. Then, adjust the rotating part to drive the reflector to rotate, and when the reflector is adjusted to a suitable angle, use the angle fixing member 4025 to fix the reflector.

[0065] The solution of this embodiment also includes: the lens bracket 6 includes a bracket panel 601 and at least two I-shaped profiles 602. The bracket panel 601 has a hollow portion in the middle, which is used to cooperate with the lens fixing tooling 501 to fix the infrared lens 5; the I-shaped profile 602 includes two fixed surfaces symmetrically arranged with each other and a support column connecting the two fixed surfaces; one of the fixed surfaces is fixedly connected to the optical platform 2, and the other fixed surface is fixedly connected to the bracket panel 601.

[0066] like Figure 5 As shown, the lens bracket 6 is arranged on one side of the optical platform 2 and is fixedly connected to the optical platform 2 through a fixing member. Specifically, the lens bracket 6 includes a bracket panel 601 and two I-shaped profiles 602. The two I-shaped profiles 602 are fixed to the optical platform 2 using screws. The two I-shaped profiles 602 need to be kept parallel and about 100-800 mm apart. The I-shaped profiles 602 and the bracket panel 601 are fixed with screws. The bracket panel 601 is a plate with a length of about 100-800 mm, a width of about 100-800 mm, and an internal hollow of about 100-700 mm.

[0067] In a specific solution of this embodiment, the support panel 601 is a plate structure with a length of about 500 mm, a width of 500 mm, and an internal hollow of about 200 mm. The hollow portion is a through hole for placing the infrared lens 5. The I-shaped profile 602 includes two fixed surfaces symmetrically arranged and a support column connecting the two fixed surfaces. Among them, one fixed surface is fixedly connected to the optical platform 2 by screws, and the other fixed surface is fixedly connected to the support panel 601 by screws.

[0068] When in use, the infrared lens 5 is fixed on the lens bracket 6 through the lens fixing fixture 501. Specifically, the infrared lens 5 is first fixed on the lens fixing fixture 501, and the infrared lens 5 is placed upward so that the lens on the infrared lens 5 is placed on the bracket panel 601 by gravity. Among them, the diameter of the lens is Φ200mm.

[0069] In other specific solutions of this embodiment, the bracket panel 601 and the hollow portion may be of other sizes, and the diameter of the lens may also be of other sizes.

[0070] In the solution of this embodiment, the hollow design in the middle of the bracket panel 601 can not only meet the needs of installing and adjusting infrared lenses 5 of different calibers, but also reduce the caliber of the lens fixing tool 501, thereby greatly improving the practicality of a single bracket panel 601.

[0071] The solution of this embodiment also includes: the infrared lens auxiliary adjustment system 100 also includes an infrared detector 7, and the infrared detector 7 is installed directly below the infrared lens 5 through an infrared detector tooling 8; wherein the infrared detector tooling 8 is fixedly connected to the bracket panel 601.

[0072] The infrared detector tooling 8 includes a first height tooling 801 and a second height tooling 802; the upper end of the first height tooling 801 is fixedly connected to the bracket panel 601, and has threaded holes arranged at intervals in the height extension direction of the first height tooling 801, and the second height tooling 802 is fixedly adjusted with screws and different threaded holes through screws and different threaded holes; wherein, the second height tooling 802 is connected to the infrared detector through a detector fine-tuning mechanism 9.

[0073] In the solution of this embodiment, the infrared lens auxiliary adjustment system 100 further includes an infrared detector 7. The infrared detector 7 is installed directly below the infrared lens 5 through an infrared detector tooling 8.

[0074] In one embodiment, the infrared detector tooling 8 comprises a first height tooling 801 and a second height tooling 802. The first height tooling 801 is a U-shaped aluminum alloy plate with a length of 500 mm, the upper end of which is fixedly connected to the bracket panel 601 on the lens bracket 6, and the lower end is connected to the second height tooling 802. Among them, the height of the second height tooling 802 is 50 mm, and it is fixed at 50 mm from the bottom of the infrared lens 5. The infrared detector 7 is fixedly connected to the second height tooling 802. More specifically, there are a plurality of threaded holes arranged at intervals in the height extension direction of the first height tooling 801, and the second height tooling 802 is fixed to different threaded holes by screws, so as to adjust the distance between the infrared detector installed on the second height tooling 802 and the infrared lens 5. In a specific scheme of this embodiment, the center of the receiving position of the infrared detector 7 is 100 mm away from the surface of the first height tooling 801.

[0075] In a further solution of this embodiment, the second height fixture 802 is fixedly connected to the detector fine-tuning mechanism 9, and the detector fine-tuning mechanism 9 is fixedly connected to the infrared detector. The detector fine-tuning mechanism 9 can also adjust the distance between the infrared detector 7 and the infrared lens 5. Among them, the detector fine-tuning mechanism 9 can play a role of fine-tuning, and its adjustable stroke is ±10mm.

[0076] In this solution, the adjustment stroke of the detector fine-tuning mechanism 9 can cover the adjustable range of the thread pitch on the first height fixture 801. In other words, the adjustment stroke of the detector fine-tuning mechanism 9 is slightly greater than or equal to the distance between the two threaded holes, so that the infrared detector can be adjusted in the full stroke in the vertical direction, increasing the wide adaptability of the detector and the lens.

[0077] In the solution provided in this embodiment, the design of the detector fine-tuning mechanism 9 can not only meet the needs of adjusting lenses of different calibers, but also meet the needs of lenses of different back focal lengths, making the system more widely applicable.

[0078] The disclosed embodiment also provides a method for adjusting an infrared lens using the infrared lens auxiliary adjustment system 100. The method comprises the following steps:

[0079] First, turn on the collimator, then set the differential black body in the collimator system 1 to 5°C and keep it at a constant temperature for 10 minutes, and select a four-bar target with a width of 0.67mm. Fix the infrared lens 5 on the bracket panel 601 using the lens fixing tool 501. Place the first lens group lens of the first lens to be installed on the corresponding lens block of the lens.

[0080] Then adjust the infrared detector fixture 8, and then fix the infrared detector on the detector fine-tuning mechanism 9, fine-tune the distance between the infrared detector 7 and the infrared lens 5, and fix the detector at the back focus position of the infrared lens 5. Adjust the extension distance of the reflector by moving the linear slide 4032. After adjustment, use the locking structure 4033 to fix the linear slide 4032 so that the center of the reflector and the center of the infrared lens 5 are on a vertical line. Then adjust the rotating connector 4022 and the rotatable buckle 4024 so that the target image emitted by the parallel light tube system 1 can pass through the reflector vertically into the infrared lens 5 to be installed. Fine-tune the position of the first lens group of the first lens, and observe the imaging quality of the infrared lens 5 to be installed in real time, and fix the lens position when the optical imaging quality to be installed is the best.

[0081] Finally, turn off the infrared detector and the collimator system 1, and remove the infrared lens 5.

[0082] The infrared lens auxiliary adjustment system 100 provided in this embodiment uses a differential black body and a characteristic target as target objects, and deflects the light path through a reflector, so that the infrared lens adjustment operation is simple, the influence of gravity on the adjustment is reduced, and the imaging quality and adjustment efficiency of the infrared lens are greatly improved.

[0083] Although multiple embodiments of the present disclosure have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art may think of many changes, modifications, and alternatives without departing from the thought and spirit of the present disclosure. It should be understood that in the process of practicing the present disclosure, various alternatives to the embodiments of the present disclosure described herein may be adopted. The attached claims are intended to define the scope of protection of the present disclosure, and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. An infrared lens auxiliary assembly and adjustment system, characterized in that: include: A collimator system, used to provide a heat source and collimated light; An optical platform, used for placing the collimator system; Infrared lens; A lens bracket, used for mounting the infrared lens, so that the midline of the infrared lens and the midline of the light outlet of the parallel light pipe system are perpendicular to each other; A reflector, arranged above the infrared lens; The reflector bracket is used to install the reflector so that the parallel light emitted by the collimator system is reflected onto the infrared lens.

2. The infrared lens auxiliary adjustment system according to claim 1, characterized in that: The optical platform is arranged horizontally, and the infrared lens is arranged vertically on the lens bracket; The infrared lens is horizontally arranged on the infrared camera lens, and the position of the infrared lens is adjusted to observe the imaging quality.

3. The infrared lens auxiliary adjustment system according to claim 1 or 2, characterized in that: The reflector bracket is fixedly mounted on the optical platform, and the reflector bracket comprises: A first reflector bracket is fixedly mounted on the optical platform and has a certain extension height in the vertical direction; a sliding mechanism is mounted on the upper part of the first reflector bracket; The second reflector bracket is connected to the sliding mechanism, and the reflector is installed on the second reflector bracket; the sliding mechanism approaches or moves away from the parallel light tube system so that the line passing through the center of the reflector and the perpendicular horizontal plane coincide with the midline of the infrared lens.

4. The infrared lens auxiliary adjustment system according to claim 3, characterized in that: The center of the light outlet of the collimator is on the same horizontal line as the center of the reflector.

5. The infrared lens auxiliary adjustment system according to claim 4, characterized in that: The second reflector bracket comprises a U-shaped connecting piece, and an end of the U-shaped connecting piece opposite to the open end is rotatably connected to the sliding mechanism; The reflector is mounted on a reflector fixing fixture, and two ends of the reflector fixing fixture are respectively connected to two side walls of the U-shaped connecting piece.

6. The infrared lens auxiliary adjustment system according to claim 5, characterized in that: The U-shaped connecting piece has a rotatable buckle and an angle fixing piece that are arranged through the side wall; The rotatable buckle includes a rotating portion arranged on the outer side of the side wall and a mounting portion arranged on the inner side of the side wall, and the rotating portion drives the mounting portion to rotate; wherein the reflector fixing fixture is fixedly connected to the mounting portion; The angle fixing member includes a screw and a nut; the screw passes through the reflector fixing fixture and the side wall of the U-shaped connecting member in sequence and is locked by a nut.

7. The infrared lens auxiliary adjustment system according to claim 5, characterized in that: The sliding mechanism comprises two slide rail slots arranged in parallel, and two linear slide rails moving along the slide rail slots; One end of the U-shaped connecting piece which is arranged opposite to the open end is rotatably connected to the frame through a rotatable connecting piece, and the frame is fixedly connected to the linear slide rail.

8. The infrared lens auxiliary adjustment system according to claim 2, characterized in that: The lens bracket is fixedly mounted on the optical platform, and the lens bracket comprises a bracket panel and at least two I-shaped profiles; The bracket panel has a hollow portion in the middle, which is used to cooperate with the lens fixing tool to fix the infrared lens; The I-shaped profile includes two fixed surfaces symmetrically arranged with each other and a support column connecting the two fixed surfaces; one of the fixed surfaces is fixedly connected to the optical platform, and the other fixed surface is fixedly connected to the bracket panel.

9. The infrared lens auxiliary adjustment system according to claim 8, characterized in that: The infrared lens auxiliary assembly and adjustment system further includes an infrared detector, which is installed directly below the infrared lens through an infrared detector tooling; Wherein, the infrared detector tooling is fixedly connected to the bracket panel.

10. The infrared lens auxiliary adjustment system according to claim 9, characterized in that: The infrared detector tooling includes a first height tooling and a second height tooling; The upper end of the first height tooling is fixedly connected to the bracket panel, and threaded holes are arranged at intervals in the height extension direction of the first height tooling, and the second height tooling is fixed to adjust the distance between the infrared detector and the infrared lens through screws and different threaded holes; Wherein, the second height tooling is connected to the infrared detector through a detector fine-tuning mechanism.

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