An optical reference calibration device for fine tracking imaging coaxial conjugation

Abstract

The application relates to the technical field of laser orientation equipment, in particular to a fine tracking imaging coaxial conjugate optical reference calibration device, which comprises a rotating table, a tracking frame, a pitching shaft frame and a telescope barrel, the tracking frame is rotationally assembled on the rotating table and the rotation axis is vertically arranged, the pitching shaft frame is installed on the tracking frame, the telescope barrel is rotationally assembled on the pitching shaft frame and the rotation axis is horizontally arranged, a guide light source and a filter are arranged in the rotating table, a camera combination is installed on the telescope barrel, the camera combination comprises an infrared camera, an optical axis synchronous camera and a visible light camera, an optical path mirror group is arranged between the camera combination and the guide light source, and the optical path mirror group is installed in the tracking frame and the telescope barrel. The fine tracking imaging coaxial conjugate optical reference calibration device can ensure that a target tracking point and a laser striking point are the same point, the calibration method is relatively simple, external equipment is not needed, the fine tracking calibration process is simple, and the cost is low.

Description

Technical Field

[0001] This application relates to the field of laser directional energy equipment technology, and in particular to an optical reference calibration device for fine tracking imaging coaxial conjugate. Background Technology

[0002] The beam control and directed emission system (BDS) is an important component of laser directed energy equipment. Its function is to acquire and stably track the target, and then emit a laser beam onto the target through an off-axis emission telescope to destroy the target.

[0003] The precision tracking imaging system is designed for accurate target tracking. The beam emission optics and the precision tracking imaging optics employ a common optical path design, achieving a tracking accuracy of less than 10 μrad. For example... Figure 3 The fine tracking imaging system shown often consists of multiple optical tracking devices (such as fine tracking imagers), and each optical tracking device has its own tracking center and field of view. It is difficult to ensure that the target tracking point and the laser strike point are the same point. Moreover, external calibration or mathematical assurance is generally used. The calibration method is complicated and requires the use of external equipment, which makes the fine tracking calibration process more complicated and costly. Summary of the Invention

[0004] This application provides a coaxial conjugate optical reference calibration device for fine tracking imaging to improve the following technical problems:

[0005] Common precision tracking imaging systems cannot guarantee that the target tracking point and the laser strike point are the same point. The calibration method is complicated and requires the use of external equipment, which makes the precision tracking calibration process more complicated and costly.

[0006] This application provides a coaxial conjugate optical reference calibration device for fine tracking imaging, which adopts the following technical solution:

[0007] A precision tracking imaging coaxial conjugate optical reference calibration device includes a turntable, a tracking frame, an elevation axis frame, and a telescope tube. The tracking frame is rotatably mounted on the turntable with its rotation axis arranged vertically. The elevation axis frame is mounted on the tracking frame, and the telescope tube is rotatably mounted on the elevation axis frame with its rotation axis arranged horizontally. A guide light source and a filter are disposed inside the turntable. The guide light source is coaxial with the main laser. The filter is used to allow visible or infrared guide light to pass through. A camera assembly is mounted on the telescope tube. The camera assembly includes an infrared camera, an optical axis synchronized camera, and a visible light camera. An optical path mirror group is disposed between the camera assembly and the guide light source. The optical path mirror group is installed inside the tracking frame and the telescope tube. The guide light emitted by the guide light source passes through the filter and is reflected or transmitted through the optical path mirror group to the camera assembly.

[0008] Furthermore, the optical path mirror assembly includes: a first mirror, a second mirror, a third mirror, a fourth mirror, and a fifth mirror installed in the tracking frame, and a sixth mirror, a seventh mirror, an eighth mirror, a ninth mirror, and a tenth mirror installed in the telescope tube;

[0009] As can be seen, the guide light is reflected sequentially through the first mirror, the second mirror, the third mirror, the fifth mirror, the fourth mirror, the sixth mirror, the seventh mirror, the eighth mirror, and the ninth mirror to the optical axis synchronization camera;

[0010] The visible light guide light is reflected sequentially through the first mirror, the second mirror, the third mirror, the fourth mirror, the fifth mirror, the sixth mirror, and the seventh mirror, and then transmitted through the eighth mirror and reflected by the tenth mirror before reaching the visible light camera.

[0011] The infrared guiding light is reflected sequentially through the first mirror, the second mirror, the third mirror, the fourth mirror, the fifth mirror, the sixth mirror, and the seventh mirror, and then transmitted sequentially through the eighth mirror and the tenth mirror to the infrared camera;

[0012] The infrared guiding light is reflected sequentially through the first mirror, the second mirror, the third mirror, the fourth mirror, the fifth mirror, the sixth mirror, and the seventh mirror, and then transmitted through the eighth mirror and reflected by the tenth mirror before reaching the visible light camera.

[0013] Furthermore, the first mirror, the third mirror, the fifth mirror, and the ninth mirror are all electrically adjustable mirrors. The electrically adjustable mirrors can be adjusted by sending commands to change the path of light. The adjustment frequency of the electrically adjustable mirrors is 60Hz.

[0014] Furthermore, the second mirror, the fourth mirror, and the sixth mirror are fixed mirrors.

[0015] Furthermore, the seventh mirror is a fast-response mirror and can be adjusted at high frequencies, with the adjustment frequency of the fast-response mirror being 500Hz.

[0016] Furthermore, both the eighth and tenth mirrors are high-reflection lenses, which can reflect a portion of the light and transmit a portion of the light. Both high-reflection lenses are electrically adjustable with an adjustment frequency of 60Hz.

[0017] Furthermore, the infrared camera, the optical axis synchronized camera, and the visible light camera are arranged at intervals on a horizontal plane, with the optical axis synchronized camera located between the infrared camera and the visible light camera.

[0018] Furthermore, the rotation angle of the tracking frame is between 0 and 360 degrees.

[0019] Furthermore, the rotation angle of the telescope tube is between 0 and 85 degrees.

[0020] Furthermore, the tracking frame, the pitch axis frame, and the telescope tube are all made of carbon silicon aluminum material, and the outer shell of the turntable is made of high-strength alloy material.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] The optical axis synchronous camera is coaxial with the main laser optical path and serves as the observation camera for laser strikes. The visible light camera serves as the tracking camera of the fine tracking system, mainly for accurately tracking the target area. It generally works better when there is sufficient light. The infrared camera serves as the tracking camera of the fine tracking system, mainly for accurately tracking the target area. It generally works better when used at night.

[0023] It can ensure that the target tracking point and the laser strike point are the same point. The calibration method is relatively simple and does not require external equipment, which simplifies the fine tracking calibration process and reduces costs. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a coaxial conjugate optical reference calibration device for fine tracking imaging according to an embodiment of this application.

[0026] Figure 2 This is a schematic diagram of the optical path of a coaxial conjugate optical reference calibration device for fine tracking imaging according to an embodiment of this application.

[0027] Figure 3 This is a schematic diagram of the optical path for emission and the optical path for fine tracking imaging in a tracking aiming system in related technologies.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Turntable; 2. Tracking frame; 3. Pitch axis frame; 4. Telescope; 5. Guide light source; 6. Filter; 7. Infrared camera; 8. Optical axis synchronous camera; 9. Visible light camera; 101. First lens; 102. Second lens; 103. Third lens; 104. Fourth lens; 105. Fifth lens; 106. Sixth lens; 107. Seventh lens; 108. Eighth lens; 109. Ninth lens; 110. Tenth lens. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0031] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0034] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0035] This application discloses an optical reference calibration device for coaxial conjugate precision tracking imaging. (Refer to...) Figure 1 and Figure 2A precision tracking imaging coaxial conjugate optical reference calibration device includes a turntable 1, a tracking frame 2, a pitch axis frame 3, and a telescope 4. The tracking frame 2 is rotatably mounted on the turntable 1 with its rotation axis arranged vertically, and the rotation angle of the tracking frame 2 is between 0 and 360 degrees. The pitch axis frame 3 is mounted on the tracking frame 2. The telescope 4 is rotatably mounted on the pitch axis frame 3 with its rotation axis arranged horizontally, and the rotation angle of the telescope 4 is between 0 and 85 degrees. A guide light source 5 and a filter 6 are provided inside the turntable 1. The guide light source 5 is coaxial with the main laser. The filter 6 is used to allow visible or infrared guide light to pass through. A camera assembly is mounted on the telescope 4. The camera assembly includes an infrared camera 7, an optical axis synchronous camera 8, and a visible light camera 9. An optical path mirror group is provided between the camera assembly and the guide light source 5. The optical path mirror group is installed inside the tracking frame 2 and the telescope 4. The guide light emitted by the guide light source 5 is reflected or transmitted into the camera assembly after passing through the filter 6 and the optical path mirror group.

[0036] To facilitate the smooth entry of visible or infrared guide light into the camera assembly, the infrared camera 7, the optical axis synchronous camera 8, and the visible light camera 9 are arranged at intervals on the horizontal plane, with the optical axis synchronous camera 8 located between the infrared camera 7 and the visible light camera 9. This layout design is more reasonable.

[0037] The optical path mirror assembly includes: a first mirror 101, a second mirror 102, a third mirror 103, a fourth mirror 104 and a fifth mirror 105 installed in the tracking frame 2, and a sixth mirror 106, a seventh mirror 107, an eighth mirror 108, a ninth mirror 109 and a tenth mirror 110 installed in the telescope tube 4.

[0038] As can be seen, the guide light is reflected sequentially through the first mirror 101, the second mirror 102, the third mirror 103, the fourth mirror 104, the fifth mirror 105, the sixth mirror 106, the seventh mirror 107, the eighth mirror 108 and the ninth mirror 109 into the optical axis synchronization camera 8;

[0039] The visible guide light is reflected sequentially through the first mirror 101, the second mirror 102, the third mirror 103, the fourth mirror 104, the fifth mirror 105, the sixth mirror 106, and the seventh mirror 107, and then transmitted through the eighth mirror 108 and reflected by the tenth mirror 110 to the visible light camera 9.

[0040] The infrared guiding light is reflected sequentially through the first mirror 101, the second mirror 102, the third mirror 103, the fourth mirror 104, the fifth mirror 105, the sixth mirror 106, and the seventh mirror 107, and then transmitted sequentially through the eighth mirror 108 and the tenth mirror 110 to the infrared camera 7.

[0041] The infrared guiding light is reflected sequentially through the first mirror 101, the second mirror 102, the third mirror 103, the fourth mirror 104, the fifth mirror 105, the sixth mirror 106, and the seventh mirror 107, and then transmitted through the eighth mirror 108 and reflected by the tenth mirror 110 to the visible light camera 9.

[0042] Specifically, the first mirror 101, the third mirror 103, the fifth mirror 105, and the ninth mirror 109 are all motorized mirrors. The motorized mirrors can be adjusted by sending commands to change the path of light. The adjustment frequency of the motorized mirrors is 60Hz.

[0043] Specifically, the second mirror 102, the fourth mirror 104, and the sixth mirror 106 are fixed mirrors.

[0044] Specifically, the seventh mirror 107 is a fast-response mirror and can be adjusted at high frequencies. The adjustment frequency of the fast-response mirror is 500Hz.

[0045] Specifically, the eighth lens 108 and the tenth lens 110 are both high-reflection high-lens lenses. High-reflection high-lens lenses can reflect part of the light and transmit part of the light. Both high-reflection high-lens lenses are electrically adjustable and the adjustment frequency is 60Hz.

[0046] The optical path mirror assembly designed above offers convenient adjustment, higher precision, and easier operation.

[0047] Specifically, the tracking frame 2, the pitch axis frame 3, and the telescope tube 4 are all made of carbon silicon aluminum material, which has the characteristics of light weight, high strength, and strong thermal stability; the outer shell of the turntable 1 is made of high-strength alloy material, which has the characteristics of high structural strength and not easy to deform.

[0048] The beneficial technical effects of the coaxial conjugate optical reference calibration device for fine tracking imaging according to the embodiments of this application are roughly as follows:

[0049] The optical axis synchronization camera 8 is coaxial with the main laser optical path and serves as the observation camera for laser strikes. The visible light camera 9 serves as the tracking camera of the fine tracking system, mainly for accurately tracking the target area. It generally works better when there is sufficient light. The infrared camera 7 serves as the tracking camera of the fine tracking system, mainly for accurately tracking the target area. It generally works better when used at night.

[0050] It can ensure that the target tracking point and the laser strike point are the same point. The calibration method is relatively simple and does not require external equipment, which simplifies the fine tracking calibration process and reduces costs.

[0051] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An optical fiducial calibration apparatus for precision tracking imaging coaxial conjugate, characterized in that, The system includes a turntable (1), a tracking frame (2), a pitch axis frame (3), and a telescope (4). The tracking frame (2) is rotatably mounted on the turntable (1) with its rotation axis arranged vertically. The pitch axis frame (3) is mounted on the tracking frame (2). The telescope (4) is rotatably mounted on the pitch axis frame (3) with its rotation axis arranged horizontally. A guide light source (5) and a filter (6) are provided inside the turntable (1). The guide light source (5) is coaxial with the main laser. The filter (6) is used for... A camera assembly is mounted on the telescope tube (4) using visible or infrared guiding light. The camera assembly includes an infrared camera (7), an optical axis synchronization camera (8), and a visible light camera (9). An optical path mirror group is provided between the camera assembly and the guiding light source (5). The optical path mirror group is installed inside the tracking frame (2) and the telescope tube (4). The guiding light emitted by the guiding light source (5) passes through the filter (6) and is reflected or transmitted through the optical path mirror group to the camera assembly. The optical path mirror assembly includes: a first mirror (101), a second mirror (102), a third mirror (103), a fourth mirror (104), and a fifth mirror (105) installed in the tracking frame (2); and a sixth mirror (106), a seventh mirror (107), an eighth mirror (108), a ninth mirror (109), and a tenth mirror (110) installed in the telescope tube (4). The visible guide light is reflected sequentially through the first mirror (101), the second mirror (102), the third mirror (103), the fourth mirror (104), the fifth mirror (105), the sixth mirror (106), the seventh mirror (107), the eighth mirror (108), and the ninth mirror (109) to the optical axis synchronization camera (8). 6) After being reflected by the seventh mirror (107), the infrared guiding light is transmitted through the eighth mirror (108) and reflected by the tenth mirror (110) in sequence to the visible light camera (9); the infrared guiding light is reflected by the first mirror (101), the second mirror (102), the third mirror (103), the fourth mirror (104), the fifth mirror (105), the sixth mirror (106), and the seventh mirror (107) in sequence, and then transmitted through the eighth mirror (108) and the tenth mirror (110) in sequence to the infrared camera (7); the infrared guiding light is reflected by the first mirror (101), the second mirror (102), the third mirror (103), the fourth mirror (104), the fifth mirror (105), the sixth mirror (106), and the seventh mirror (107) in sequence, and then transmitted through the eighth mirror (108) and the tenth mirror (110) in sequence to the visible light camera (9); The first mirror (101), the third mirror (103), the fifth mirror (105), and the ninth mirror (109) are all electrically adjustable mirrors. The electrically adjustable mirrors can change the path of light by sending commands to adjust their angles. The adjustment frequency of the electrically adjustable mirrors is 60Hz. The second mirror (102), the fourth mirror (104), and the sixth mirror (106) are fixed mirrors. The seventh mirror (107) is a fast-response mirror and can be adjusted at high frequencies. The adjustment frequency of the fast-response mirror is 500Hz. The eighth mirror (108) and the tenth mirror (110) are both high-reflection high-resolution lenses. The high-reflection high-resolution lenses can reflect part of the light and transmit part of the light. The high-reflection high-resolution lenses are all electrically adjustable mirrors with an adjustment frequency of 60Hz.

2. An optical fiducial calibration apparatus for precision tracking imaging coaxial conjugate according to claim 1, characterized in that, The infrared camera (7), the optical axis synchronous camera (8), and the visible light camera (9) are arranged at intervals on a horizontal plane, with the optical axis synchronous camera (8) located between the infrared camera (7) and the visible light camera (9).

3. The optical reference calibration device for precise tracking imaging coaxial conjugate according to claim 1, characterized in that, The rotation angle of the tracking frame (2) is between 0 and 360 degrees.

4. The optical reference calibration device for coaxial conjugate precision tracking imaging according to claim 1, characterized in that, The rotation angle of the telescope tube (4) is between 0 and 85 degrees.

5. The optical reference calibration device for coaxial conjugate precision tracking imaging according to claim 1, characterized in that, The tracking frame (2), the pitch axis frame (3), and the telescope tube (4) are all made of carbon silicon aluminum material, and the outer shell of the turntable (1) is made of high-strength alloy material.

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