Auxiliary device for lens shadow correction calibration

Abstract

The utility model provides an auxiliary device for lens shadow correction and calibration. The auxiliary device comprises a supporting table, a first lifting mechanism, a second lifting mechanism and a fixing piece. The first lifting mechanism is arranged on the supporting table; the second lifting mechanism is arranged on the side, away from the supporting table, of the first lifting mechanism. A testing area is arranged on one side, far away from the supporting table, of the first lifting mechanism; the lifting end of the fixing piece is connected with the lifting end of the second lifting mechanism, and the fixing end of the fixing piece is used for placing a light equalizing sheet and enabling the light equalizing sheet to face the test area. The light equalizing plate is fixed on the fixing piece and is connected with the second lifting mechanism in a lifting manner, so that the fixing piece and the light equalizing plate can be driven to ascend and descend through the second lifting mechanism, and the light equalizing plate is tightly attached to the lens; the second lifting mechanism is arranged to adjust the distance between the lens and the light source, the requirements of different lenses for different incident light amounts are met, and therefore correction can be effectively carried out.

Description

Technical Field

[0001] This utility model relates to the field of lens correction technology, and in particular to an auxiliary device for lens shadow correction calibration. Background Technology

[0002] Lenses typically require lens shading correction (LSC) before use. Because a lens's structure is similar to a convex lens, it focuses light towards the center. This focusing effect causes the light passing through the lens to have a greater intensity at the center of the CIS (CMOS Image Sensor) than at the corners, resulting in an image that appears brighter in the center and darker at the corners, thus creating lens shading. Therefore, lens shading correction is necessary for a lens to function properly.

[0003] Currently, the conventional calibration method involves placing a light diffuser directly onto the lens of the product for correction. However, the light diffuser is prone to slipping during the correction process; and when the product structure is irregular, the light diffuser cannot fully fit the lens and is difficult to fix, resulting in an ineffective correction effect. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an auxiliary device for lens shadow correction calibration, so that the light diffuser fits the lens and can be effectively corrected.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An auxiliary device for lens shading correction calibration includes a support platform, a first lifting mechanism, a second lifting mechanism, and a fixing member; the first lifting mechanism is disposed on the support platform; the second lifting mechanism is disposed on the side of the first lifting mechanism away from the support platform; a test area is provided on the side of the first lifting mechanism away from the support platform; the lifting end of the fixing member is connected to the lifting end of the second lifting mechanism, and the fixing end of the fixing member is used to place a light-diffusing sheet and to make the light-diffusing sheet face the test area.

[0007] Furthermore, the first lifting mechanism includes a support plate, a motor, a first lead screw, a connecting block, and an X-shaped connecting rod; the first lead screw is horizontally mounted on the support platform; the drive end of the motor is rotatably connected to one end of the first lead screw; the connecting block is threadedly connected to the first lead screw; the two ends of the first side of the X-shaped connecting rod are respectively connected to the support platform and the support plate; the two ends of the second side of the X-shaped connecting rod are respectively slidably connected to the support platform and the support plate, and the connecting block is also connected to the two ends of the second side of the X-shaped connecting rod.

[0008] Furthermore, the surface of the support platform and the bottom surface of the support plate are both provided with slide rails; pulleys are provided at both ends of the second side of the X-shaped connecting rod; the pulleys are slidably connected to each other.

[0009] Furthermore, a limiting component is provided on the support platform; the limiting component is located at both ends of the moving direction of the connecting block.

[0010] Furthermore, the edge of the support plate is provided with protruding ridges.

[0011] Furthermore, a button is provided on the support platform; the button is connected to the motor.

[0012] Furthermore, the test area is equipped with positioning elements for placing the lens to be tested.

[0013] Furthermore, the second lifting mechanism includes a second lead screw and a support frame; the support frame is disposed on the first lifting mechanism; the second lead screw is vertically disposed on the side of the support frame facing the test area and is rotatably connected to the support frame; the fixing member is vertically disposed with the second lead screw and is threadedly connected to the second lead screw.

[0014] Furthermore, it also includes a guide rod and a bearing; the guide rod is disposed on both sides of the second lead screw; the bearing is sleeved on the guide rod, and the outer peripheral side of the bearing is connected to the fixing member.

[0015] Furthermore, handles are provided on both sides of the support platform.

[0016] The beneficial effects of this utility model are as follows: by fixing the light diffuser to the fixing member, and the fixing member being connected to the second lifting mechanism in a lifting manner, the second lifting mechanism can drive the fixing member and the light diffuser to rise and fall, so that the light diffuser is in close contact with the lens; at the same time, the second lifting mechanism can adjust the distance between the lens and the light source to meet the needs of different lenses for different incident light amounts, thereby effectively correcting the light. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an auxiliary device for lens shadow correction calibration according to an embodiment of the present utility model;

[0018] Figure 2 This is a side view of an auxiliary device for lens shadow correction calibration according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the second lifting mechanism of an auxiliary device for lens shadow correction calibration in an embodiment of the present invention;

[0020] Label Explanation:

[0021] 1. Support platform; 11. Limiting component; 12. Button; 13. Handle;

[0022] 2. First lifting mechanism; 21. Support plate; 211. Protruding rib; 22. Motor; 23. First lead screw; 24. Connecting block; 25. X-shaped connecting rod; 26. Pulley;

[0023] 3. Second lifting mechanism; 31. Second lead screw; 32. Support frame; 33. Guide rod; 34. Bearing;

[0024] 4. Fixing components; 5. Slide rails; 6. Positioning components; 7. Light diffuser; 8. Products to be tested. Detailed Implementation

[0025] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0026] Please refer to Figure 1 An auxiliary device for lens shading correction calibration includes a support platform, a first lifting mechanism, a second lifting mechanism, and a fixing member; the first lifting mechanism is disposed on the support platform; the second lifting mechanism is disposed on the side of the first lifting mechanism away from the support platform; a test area is provided on the side of the first lifting mechanism away from the support platform; the lifting end of the fixing member is connected to the lifting end of the second lifting mechanism, and the fixing end of the fixing member is used to place a light-diffusing sheet and to make the light-diffusing sheet face the test area.

[0027] As can be seen from the above description, the beneficial effects of this utility model are as follows: by fixing the light diffuser to the fixing member, and the fixing member being vertically connected to the second lifting mechanism, the second lifting mechanism can drive the fixing member and the light diffuser to rise and fall, so that the light diffuser is closely fitted to the lens; at the same time, the second lifting mechanism can adjust the distance between the lens and the light source to meet the needs of different lenses for different incident light amounts, thereby effectively correcting the light.

[0028] Furthermore, the first lifting mechanism includes a support plate, a motor, a first lead screw, a connecting block, and an X-shaped connecting rod; the first lead screw is horizontally mounted on the support platform; the drive end of the motor is rotatably connected to one end of the first lead screw; the connecting block is threadedly connected to the first lead screw; the two ends of the first side of the X-shaped connecting rod are respectively connected to the support platform and the support plate; the two ends of the second side of the X-shaped connecting rod are respectively slidably connected to the support platform and the support plate, and the connecting block is also connected to the two ends of the second side of the X-shaped connecting rod.

[0029] As described above, the first lifting mechanism consists of a support plate, a motor, a first lead screw, a connecting block, and an X-shaped connecting rod. The motor drives the first lead screw to rotate, which in turn moves the connecting block on the first lead screw. This causes the connecting block to move the second side of the X-shaped connecting rod, thereby adjusting the distance between the second side and the first side of the X-shaped connecting rod. When the second side of the X-shaped connecting rod moves away from its first side, the height of the support plate decreases, and vice versa.

[0030] Furthermore, the surface of the support platform and the bottom surface of the support plate are both provided with slide rails; pulleys are provided at both ends of the second side of the X-shaped connecting rod; the pulleys are slidably connected to each other.

[0031] As described above, by setting slide rails on the surface of the support platform and the bottom surface of the support plate, and by setting pulleys at both ends of the second side of the X-shaped connecting rod, the support plate becomes more stable during the height adjustment process through the cooperation of the pulleys and slide rails.

[0032] Furthermore, a limiting component is provided on the support platform; the limiting component is located at both ends of the moving direction of the connecting block.

[0033] As can be seen from the above description, by setting limiting parts at both ends of the moving direction of the connecting block, it is possible to prevent the connecting block from exceeding the movable range, which would prevent the X-shaped connecting rod from effectively supporting the support plate.

[0034] Furthermore, the edge of the support plate is provided with protruding ridges.

[0035] As described above, by setting protruding ridges on the edge of the support plate, the ridges can act as a stop when the lens accidentally falls off, preventing the lens from falling off the support plate.

[0036] Furthermore, a button is provided on the support platform; the button is connected to the motor.

[0037] As described above, by setting a button connected to the motor on the support platform, the rotation of the motor can be controlled via the button, making operation more convenient.

[0038] Furthermore, the test area is equipped with positioning elements for placing the lens to be tested.

[0039] As described above, by setting a positioning component for fixing the lens within the test area, the lens can be fixed in place, preventing it from slipping off.

[0040] Furthermore, the second lifting mechanism includes a second lead screw and a support frame; the support frame is disposed on the first lifting mechanism; the second lead screw is vertically disposed on the side of the support frame facing the test area and is rotatably connected to the support frame; the fixing member is vertically disposed with the second lead screw and is threadedly connected to the second lead screw.

[0041] As described above, by connecting the fixing member to the second lead screw, rotating the second rod can drive the fixing member and the light-diffusing plate to move up and down, so that the light-diffusing plate fits into the lens.

[0042] Furthermore, it also includes a guide rod and a bearing; the guide rod is disposed on both sides of the second lead screw; the bearing is sleeved on the guide rod, and the outer peripheral side of the bearing is connected to the fixing member.

[0043] As can be seen from the above description, by setting guide rods on both sides of the second lead screw and connecting the fixing component to the guide rods through bearings, the stability of the fixing component during the lifting process is improved.

[0044] Furthermore, handles are provided on both sides of the support platform.

[0045] As can be seen from the above description, by installing handles on both sides of the support platform, it is convenient for testers to move the device.

[0046] The auxiliary device for lens shadow correction calibration provided by this utility model can be applied to lens shadow correction scenarios, such as shadow correction of lenses or bare lenses on mobile phones. The following is a detailed description of the specific implementation method:

[0047] Example 1

[0048] Please refer to Figure 1An auxiliary device for lens shading correction calibration includes a support platform 1, a first lifting mechanism 2, a second lifting mechanism 3, and a fixing member 4. The first lifting mechanism 2 is disposed on the support platform 1. The second lifting mechanism 3 is disposed on the side of the first lifting mechanism 2 away from the support platform 1. A test area is provided on the side of the first lifting mechanism 2 away from the support platform 1. The lifting end of the fixing member 4 is connected to the lifting end of the second lifting mechanism 3, and the fixing end of the fixing member 4 is used to place a light-diffusing sheet 7 and to make the light-diffusing sheet 7 face the test area. The first lifting mechanism 2 is used to control the lifting of the product 8 to be debugged, and the second lifting mechanism 3 is used to adjust the position of the light-diffusing sheet 7 and the lens of the product 8 to be debugged. Different product lenses have different requirements for the amount of light incident on the lens when performing lens shadow correction calibration. One way is to achieve this by adjusting the automatic exposure time of the lens's ISP (Image Signal Processing) parameters. Another way is to adjust the amount of light incident on the lens by adjusting the distance between the lens and the light source. When the AE (Auto Exposure) parameters cannot meet the calibration function, the brightness requirement for calibration is adjusted by adjusting the illumination distance between the lens and the light box.

[0049] Please refer to Figure 1 as well as Figure 2 The first lifting mechanism 2 includes a support plate 21, a motor 22, a first lead screw 23, a connecting block 24, and an X-shaped connecting rod 25; the first lead screw 23 is horizontally mounted on the support platform 1; the drive end of the motor 22 is rotatably connected to one end of the first lead screw 23; the connecting block 24 is threadedly connected to the first lead screw 23; and a button 12 is provided on the support platform 1, which is connected to the motor 22. Figure 1 As shown, the support platform 1 is equipped with two buttons 12, which are used to control the raising and lowering of the support plate 21, respectively. The two ends of the first side of the X-shaped connecting rod 25 are connected to the support platform 1 and the support plate 21, respectively. The edge of the support plate 21 is provided with protruding ridges 211; as shown... Figure 1As shown, the support plate 21 is rectangular, with protruding ribs 211 on three sides. The protruding rib 211 is omitted on the other side due to the presence of the second lifting mechanism 3. A positioning element 6 is provided in the test area for placing the lens to be tested. The two ends of the second side of the X-shaped connecting rod 25 are slidably connected to the support platform 1 and the support plate 21, respectively, and the connecting block 24 is also connected to the two ends of the second side of the X-shaped connecting rod 25. Slide rails 5 are provided on the surface of the support platform 1 and the bottom surface of the support plate 21. Pulleys 26 are provided at both ends of the second side of the X-shaped connecting rod 25, and these pulleys 26 are slidably connected to each other. A limiting element 11 is provided on the support platform 1, located at both ends of the connecting block 24 in the direction of movement. Handles 13 are also provided on both sides of the support platform 1.

[0050] Please refer to Figure 3 The second lifting mechanism 3 includes a second lead screw 31, a support frame 32, a guide rod 33, and a bearing 34. The support frame 32 is mounted on the first lifting mechanism 2. The second lead screw 31 is vertically mounted on the side of the support frame 32 facing the test area and is rotatably connected to the support frame 32. The fixing member 4 is vertically mounted to the second lead screw 31 and is threadedly connected to the second lead screw 31. A knob is provided at the top of the lead screw for easy rotation and height adjustment. The guide rod 33 is mounted on both sides of the second lead screw 31. The bearing 34 is sleeved on the guide rod 33, and the outer periphery of the bearing 34 is connected to the fixing member 4.

[0051] The working principle of the above-mentioned auxiliary device for lens shadow correction calibration is as follows:

[0052] Pressing the up button 12 controls the motor 22 to rotate clockwise, causing the first lead screw 23 to rotate clockwise. This moves the connecting block 24 and pulley 26 towards the motor 22, thereby causing the X-shaped connecting rod 25 to retract and raise the support plate 21. Once the designated position is reached, releasing the up button 12 stops the upward movement. For downward movement, the motor 22 is reversed, causing the first lead screw 23 to rotate counterclockwise, which in turn stretches the X-shaped connecting rod 25 and lowers the support plate 21. When controlling the raising and lowering of the light-diffusing plate 7, the second lead screw 31 is controlled to rotate clockwise or counterclockwise, causing the fixing component 4 to raise or lower the light-diffusing plate 7, thus aligning it with the lens of the product 8 to be tested.

[0053] Place the device in a standard color temperature light box, connect the power switch, and place the product under test in the designated position. Connect the product to the computer via USB, turn on the standard light source of the light box, and shield the external interference light sources from the light box. According to the debugging requirements, take raw images of the lens under different light color temperatures and brightness levels, such as raw images of a 4000K TL84 light source and a 6500K D65 light source at 1x gain, 2x gain, and 4x gain. After taking all raw images, turn off the light box lights and remove the product under test and the device.

[0054] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An auxiliary device for lens shading correction calibration, characterized in that, Includes a support platform, a first lifting mechanism, a second lifting mechanism, and fixing components; The first lifting mechanism is mounted on the support platform; The second lifting mechanism is located on the side of the first lifting mechanism away from the support platform; A test area is provided on the side of the first lifting mechanism away from the support platform; The lifting end of the fixing member is connected to the lifting end of the second lifting mechanism. The fixing end of the fixing member is used to place the light homogenizing sheet and to make the light homogenizing sheet face the test area.

2. The auxiliary device for lens shading correction calibration according to claim 1, characterized in that, The first lifting mechanism includes a support plate, a motor, a first lead screw, a connecting block, and an X-shaped connecting rod; The first lead screw is horizontally mounted on the support platform; The drive end of the motor is rotatably connected to one end of the first lead screw; The connecting block is threadedly connected to the first lead screw. The two ends of the first side of the X-shaped connecting rod are respectively connected to the support platform and the support plate; The two ends of the second side of the X-shaped link are slidably connected to the support platform and the support plate, respectively, and the connecting block is also connected to the two ends of the second side of the X-shaped link.

3. The auxiliary device for lens shading correction calibration according to claim 2, characterized in that, The surface of the support platform and the bottom surface of the support plate are both provided with slide rails; The two ends of the second side of the X-shaped connecting rod are provided with pulleys; The pulleys are slidably connected to each other.

4. The auxiliary device for lens shading correction calibration according to claim 2, characterized in that, Limiting components are provided on the support platform; The limiting members are located at both ends of the moving direction of the connecting block.

5. The auxiliary device for lens shading correction calibration according to claim 2, characterized in that, The support plate has raised ridges along its edges.

6. The auxiliary device for lens shading correction calibration according to claim 2, characterized in that, A button is provided on the support platform; The button is connected to the motor.

7. The auxiliary device for lens shading correction calibration according to claim 1, characterized in that, The test area is equipped with positioning elements for placing the lens to be tested.

8. The auxiliary device for lens shading correction calibration according to claim 1, characterized in that, The second lifting mechanism includes a second lead screw and a support frame; The support frame is mounted on the first lifting mechanism; The second lead screw is vertically disposed on the side of the support frame facing the test area and is rotatably connected to the support frame; The fixing member is vertically arranged with the second lead screw and is threadedly connected to the second lead screw.

9. The auxiliary device for lens shading correction calibration according to claim 8, characterized in that, It also includes guide rods and bearings; The guide rods are disposed on both sides of the second lead screw; The bearing is sleeved on the guide rod, and the outer peripheral side of the bearing is connected to the fixing member.

10. The auxiliary device for lens shading correction calibration according to claim 1, characterized in that, Handles are also provided on both sides of the support platform.

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