Long-focus module calibration equipment

Abstract

The utility model relates to a telephoto module calibration device. The telephoto module calibration device comprises a frame; the jig carrying table is rotatably arranged on the rack; the calibration jig is used for fixing a telephoto lens module to be calibrated; the test box is arranged on the jig carrying table and is connected with the calibration jig through a test box adapter plate, and the test box adapter plate and the calibration jig are matched to realize signal interaction between the test box and the telephoto lens module; the display screen is arranged on the rack and is used for displaying a calibration result; the relay lens is arranged on the rack and located right in front of the jig carrying table, and can be adjusted in the front-back direction; the light source plate is arranged on the rack, located right in front of the relay lens and used for providing a light source in the calibration process; and the control host is respectively connected with the test box, the light source plate and the display screen and is used for controlling the operation of the whole test equipment. According to the utility model, a plurality of different focal lengths of the same telephoto lens module can be calibrated, and the stability and the accuracy of production detection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automated testing equipment, in particular to a telephoto module calibration device. Background Art

[0002] With the rapid development of optical technology, telephoto camera modules are increasingly used in surveillance, photography, scientific research, and other fields. As the core component of a camera, the imaging performance of a telephoto lens module directly affects the image quality and functionality of the entire system. Therefore, accurate calibration of telephoto lens modules is particularly important.

[0003] Traditional telephoto module calibration methods typically rely on fixed-position calibration devices, which often lack sufficient flexibility and accuracy when dealing with multiple focal lengths of the same telephoto lens module. Because telephoto lens modules exhibit varying imaging characteristics and aberrations at different focal lengths, fixed-position calibration devices struggle to accurately calibrate telephoto lens modules at all focal lengths.

[0004] Furthermore, traditional calibration methods suffer from low production efficiency and insufficient detection stability. The complex and time-consuming calibration process often leads to low production efficiency. Furthermore, the stability and accuracy of the calibration results cannot be fully guaranteed, thus affecting the consistency of product quality.

[0005] Therefore, there is an urgent need for a new telephoto module calibration device. Summary of the Invention

[0006] The purpose of the utility model is to provide a telephoto module calibration device, which can calibrate multiple different focal lengths of the same telephoto lens module, thereby improving the stability and accuracy of production detection.

[0007] The telephoto module calibration device described in the present invention includes:

[0008] frame;

[0009] A fixture carrier, rotatably disposed on the frame;

[0010] Calibration fixture, used to fix the telephoto lens module to be calibrated;

[0011] A test box is placed on the fixture platform and connected to the calibration fixture via a test box adapter plate. The test box adapter plate and the calibration fixture cooperate to achieve signal interaction between the test box and the telephoto lens module.

[0012] A display screen, provided on the frame, for displaying calibration results;

[0013] A relay mirror is provided on the frame and is located directly in front of the fixture carrier, and the relay mirror can be adjusted in the front-back direction;

[0014] A light source board, disposed on the frame and located directly in front of the relay mirror, for providing a light source during the calibration process;

[0015] The control host is connected to the test box, light source board and display screen respectively, and is used to control the operation of the entire test equipment.

[0016] Optionally, the jig carrier is mounted on a base via bearings, and the base is mounted on the frame. The jig carrier can be rotated forward 90°±2°, that is, when loading and unloading, the jig carrier is in a horizontal state, and when calibrating, the jig carrier can be rotated so that the upper surface of the jig carrier faces the relay mirror.

[0017] Optionally, the device further comprises a manual rotating handle fixedly connected to the fixture carrier, providing an operator with a convenient means of rotating the fixture carrier.

[0018] Optionally, a material clamping device is further included, the material clamping device is fixed on the fixture carrier, and the test box is fixedly mounted on the material clamping device, which is used to clamp and fix the test box, thereby improving the stability and reliability of the test box.

[0019] Optionally, the test box adapter plate is fixed to the test box via a pin header slot, thereby achieving a fast and stable connection between the test box adapter plate and the test box, as well as signal interaction.

[0020] Optionally, the rack has two front and rear platforms of different heights, namely a high platform and a low platform, thereby optimizing the layout of the equipment and space utilization, so that various components can be reasonably distributed on the rack.

[0021] Optionally, the display screen is fixed to the high table of the rack via a display screen bracket and is located on the left side of the relay mirror. The display screen is used to display test information, such as calibration results, calibration progress, etc., to facilitate operator monitoring and recording.

[0022] Optionally, the light source board is arranged on a low table surface of the rack through a light source board bracket.

[0023] Optionally, a lens holder is further included, wherein the lens holder is provided with an elongated hole extending in the front-to-back direction, the lens holder being fixed to the elevated surface of the frame via the elongated hole, and the relay lens being mounted on the lens holder. The provision of the elongated hole is a specific means of adjusting the relay lens in the front-to-back direction, thereby adjusting the distance between the relay lens and the light source board.

[0024] Optionally, the rack is constructed from a profile frame and a sheet metal housing, with feet and casters mounted on the bottom of the rack. The feet are used to adjust the height of the equipment, ensuring stability and levelness on different surfaces. The casters are used to move the equipment to different test locations.

[0025] The utility model has the following advantages:

[0026] This utility model proposes a telephoto module calibration device that, through the rational layout of its various components, enables precise calibration of the imaging performance of telephoto camera modules. Equipped with a relay lens that can be flexibly adjusted forward and backward, the telephoto module calibration device can easily adjust the spacing between the relay lens and the light source board. This feature enables accurate calibration of the same type of telephoto lens modules at different focal lengths. This telephoto module calibration device not only significantly improves the stability and accuracy of production testing, ensuring consistent product quality, but also effectively accelerates production efficiency and optimizes the overall manufacturing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the overall structure of the telephoto module calibration device described in the embodiment of the present application;

[0028] Figure 2 A schematic structural diagram of a fixture carrier and parts mounted on the fixture carrier in an embodiment of the present application;

[0029] Figure 3 This is a structural diagram of a display screen and a display screen bracket in an embodiment of the present application;

[0030] Figure 4 This is a schematic structural diagram of the relay mirror and lens bracket in an embodiment of the present application;

[0031] Figure 5 This is a structural diagram of the light source board and the light source board bracket in an embodiment of the present application;

[0032] Figure 6 This is a principle block diagram of the control part of the telephoto module calibration device described in the embodiment of the present application;

[0033] Description of the reference numerals in the accompanying drawings:

[0034] In the figure: 1. Rack, 1a. High table, 1b. Low table, 2. Control host, 3. Light source board, 4. Display screen, 5. Relay mirror, 6. Fixture carrier, 7. Material area, 8. Casters, 9. Foot cup, 10. Manual rotating handle, 11. Material clamping device, 12. Test box, 13. Test box adapter plate, 14. Calibration fixture, 15. Bearing, 16. Base, 17. Display screen bracket, 18. Lens bracket, 18a, long strip hole, 19. Light source board bracket, 20. Power module. DETAILED DESCRIPTION

[0035] The following describes the implementation of the technical solution of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the contents disclosed in this specification. The present invention may also be implemented or applied through different specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0036] like Figures 1 to 6 As shown, in an embodiment of the present application, a telephoto module calibration device includes a frame 1, a fixture carrier 6, a calibration fixture 14, a test box 12, a display screen 4, a relay lens 5, a light source board 3, and a control host 2. The fixture carrier 6 is rotatably mounted on the frame 1; the calibration fixture 14 is used to secure the telephoto lens module to be calibrated. The test box 12 is mounted on the fixture carrier 6 and connected to the calibration fixture 14 via a test box adapter plate 13. The test box adapter plate 13 and the calibration fixture 14 cooperate to enable signal exchange between the test box 12 and the telephoto lens module. The display screen 4 is mounted on the frame 1 to display the calibration results. The relay lens 5 is mounted on the frame 1 and located directly in front of the fixture carrier 6. The relay lens 5 can be adjusted in the front-to-back direction. The light source board 3 is mounted on the frame 1 and located directly in front of the relay lens 5 to provide a light source for the calibration process. The control host 2 is connected to the test box 12 , the light source board 3 and the display screen 4 respectively, and is used to control the operation of the entire test equipment.

[0037] like Figure 6 As shown, in a possible embodiment, a telephoto module calibration device further requires a power module 20, which is connected to the control host and is used to power the telephoto module calibration device.

[0038] like Figure 2 As shown, in one possible embodiment, the jig carrier 6 is mounted on a base 16 via a bearing 15, and the base 16 is mounted on the frame 1. The jig carrier 6 can be rotated forward 90°±2°, that is, when loading and unloading, the jig carrier 6 is in a horizontal state, so as to facilitate the installation of the telephoto lens module into the calibration jig 14 and the removal of the telephoto lens module from the calibration jig 14. When calibrating, the jig carrier 6 can be rotated so that the upper surface of the jig carrier 6 faces the relay lens 5, that is, the lens of the telephoto lens module is facing the relay lens 5.

[0039] like Figure 2As shown, in one possible embodiment, a telephoto module calibration device further includes a manual rotating handle 10 fixedly connected to the jig stage 6. This provides an operator with a convenient means of rotating the jig stage 6. When the jig stage 6 needs to be rotated, the operator simply grasps the manual rotating handle 10 and applies external force.

[0040] like Figure 2 As shown, in one possible embodiment, a telephoto module calibration device further includes a material clamping device 11, which is fixed to the fixture carrier 6. A test box 12 is fixedly mounted on the material clamping device 11 and is used to clamp and secure the test box 12. The material clamping device 11 is used to clamp and secure the test box 12 to prevent the test box 12 from slipping during rotation, thereby improving the stability and reliability of the test box 12.

[0041] like Figure 2 As shown, in a possible embodiment, the test box adapter board 13 is fixed to the test box 12 through the pin header slot, thereby achieving a fast and stable connection between the test box adapter board 13 and the test box 12, as well as signal interaction.

[0042] like Figure 1 As shown, in a possible embodiment, the rack 1 has two front and rear platforms of different heights, namely a high platform 1a and a low platform 1b. By optimizing the layout and space of the equipment, various components can be reasonably distributed on the rack 1.

[0043] like Figure 1 and Figure 3 As shown, in one possible embodiment, the display screen 4 is fixed to the high table 1a of the rack 1 via a display screen bracket 17 and is located to the left of the relay mirror 5. The display screen 4 is used to display test information, such as calibration results and calibration progress, to facilitate operator monitoring and recording.

[0044] like Figure 1 and Figure 5 As shown, in a possible embodiment, the light source board 3 is disposed on the low table 1 b of the rack 1 through a light source board bracket 19 .

[0045] like Figure 1 and Figure 4As shown, in one possible embodiment, a telephoto module calibration device further includes a lens holder 18 having an elongated hole 18a extending in the front-to-back direction (enabling a 15mm front-to-back movement tolerance adjustment range). The lens holder 18 is fixed to the high table 1a of the frame 1 via the elongated hole 18a, and the relay lens 5 is mounted on the lens holder 18. The provision of the elongated hole 18a is a specific means for adjusting the relay lens 5 in the front-to-back direction. By adjusting the position of the relay lens 5 in the front-to-back direction, the distance between the relay lens 5 and the light source board 3 can be adjusted.

[0046] like Figure 1 As shown, in one possible embodiment, a rack 1 is constructed of a profile frame and a sheet metal housing. Feet 9 and casters 8 are mounted on the bottom of the rack 1. Feet 9 are used to adjust the height of the device, ensuring stability and levelness on different surfaces. Casters 8 are used to move the device to different testing locations.

[0047] like Figure 5 As shown, in one possible embodiment, the test box 12 is a device for testing camera modules (including telephoto lens modules). It integrates multiple testing functions and interfaces, can simulate various conditions in actual camera module usage scenarios, and perform comprehensive testing of the camera modules. The test box 12 is conventional technology and will not be described in detail here.

[0048] like Figure 5 As shown, in one possible embodiment, the test box adapter board 13 performs signal switching and transmission. It transmits test signals output by the test box 12 to the telephoto lens module via the circuits and interfaces on the test box adapter board 13. It also transmits signals generated by the telephoto lens module (such as image signals and control signals) back to the test box 12 for analysis and processing. The test box adapter board 13 is conventional technology and will not be described in detail here.

[0049] like Figure 1 As shown, in one possible embodiment, a calibration jig 14 is used to fix the telephoto lens module and is also provided with wiring that enables signal exchange between the telephoto lens module and the test box adapter board 13. The calibration jig 14 belongs to the prior art and will not be described in detail here.

[0050] like Figure 1 As shown, the process of testing the telephoto lens module using the telephoto module calibration device of the embodiment of the present application is as follows:

[0051] S1. Pick up the telephoto lens module from the material area 7 on the left hand side, fix the telephoto lens module in the calibration fixture 14 by manual loading, and then push the manual rotating handle 10 to make the lens of the telephoto lens module face the repeater 5.

[0052] S2. Adjust the distance between the relay lens 5, the telephoto lens module and the light source board 3, and then start calibration. The calibration result is displayed on the display screen 4.

[0053] S3. After calibration is completed, remove the telephoto lens module and place it in the material area 7 on the right hand side.

[0054] The above embodiments are preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A telephoto module calibration device, characterized in that: include: Rack (1); A fixture carrier (6) is rotatably arranged on the frame (1); A calibration fixture (14) for fixing the telephoto lens module to be calibrated; A test box (12) is arranged on a fixture carrier (6) and is connected to a calibration fixture (14) via a test box adapter plate (13), wherein the test box adapter plate (13) and the calibration fixture (14) cooperate to realize signal interaction between the test box (12) and the telephoto lens module; A display screen (4) is provided on the frame (1) and is used to display calibration results; A relay mirror (5) is provided on the frame (1) and is located directly in front of the fixture carrier (6), and the relay mirror can be adjusted in the front-back direction; A light source board (3) is arranged on the frame (1) and located directly in front of the relay mirror (5), and is used to provide a light source during the calibration process; The control host (2) is connected to the test box (12), the light source board (3) and the display screen (4) respectively, and is used to control the operation of the entire test equipment.

2. The telephoto module calibration device according to claim 1, characterized in that: The fixture carrier (6) is mounted on a base (16) via a bearing (15), and the base (16) is mounted on the frame (1).

3. The telephoto module calibration device according to claim 1, characterized in that: It also includes a manual rotating handle (10) fixedly connected to the fixture carrier (6).

4. The telephoto module calibration device according to claim 1, characterized in that: It also includes a material clamping device (11), the material clamping device (11) is fixed on the fixture carrier (6), and the test box (12) is fixedly mounted on the material clamping device (11) and is used to clamp and fix the test box (12).

5. The telephoto module calibration device according to claim 1, characterized in that: The test box adapter plate (13) is fixed on the test box (12) through the pin header slot.

6. The telephoto module calibration device according to claim 1, characterized in that: The frame (1) has two front and rear tabletops of different heights, namely a high tabletop (1a) and a low tabletop (1b).

7. The telephoto module calibration device according to claim 6, characterized in that: The display screen (4) is fixed on the high table (1a) of the frame (1) via a display screen bracket (17) and is located on the left side of the relay mirror (5).

8. The telephoto module calibration device according to claim 6, characterized in that: The light source panel (3) is arranged on the low table (1b) of the frame (1) via a light source panel bracket (19).

9. The telephoto module calibration device according to claim 6, characterized in that: It also includes a lens bracket (18), wherein the lens bracket (18) is provided with an elongated hole (18a) extending in the front-back direction, the lens bracket (18) is fixed to the high table (1a) of the frame (1) through the elongated hole (18a), and the relay mirror (5) is mounted on the lens bracket (18).

10. The telephoto module calibration device according to claim 1, characterized in that: The frame (1) is composed of a profile frame and a sheet metal shell, and a foot cup (9) and casters (8) are installed at the bottom of the frame (1).

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