Manual focus device

Abstract

The present application relates to a manual focusing device, including a test fixture, the test fixture is equipped with a camera tooling for fixing a camera module; a magnifying glass is rotatably installed on the top of the test fixture, the magnifying glass is located above the camera tooling, and when the camera module is fixed to the camera tooling, a structural gap is formed between the magnifying glass and the camera module; the manual focusing device also includes a focusing disk, the thickness of the focusing disk is less than the width of the structural gap; a mounting hole is provided in the middle of the focusing disk, the mounting hole is used to match and snap-fit ​​with the rotating lens of the camera module, and when the focusing disk is mounted on the rotating lens through the mounting hole, the focusing disk and the rotating lens are circumferentially linked. A manual focusing device of the present application can quickly complete the focusing operation of the camera module and improve the efficiency of the camera module focusing test.

Description

Technical Field

[0001] The present application relates to the technical field of camera assembly and testing, and in particular to a manual focusing device. Background Art

[0002] Camera, also known as computer camera, computer eye, electronic eye, etc., is a video input device, which is widely used in video conferencing, telemedicine and real-time monitoring. With the development of modern technology, camera module technology is becoming more and more mature. Camera modules are small in size and powerful in function, and are widely used in various industries such as mobile phones.

[0003] After an existing camera is assembled, it is usually necessary to perform a focus test on the camera to determine the camera's imaging quality and production quality. When focusing, the camera module is usually placed on a test fixture with a magnifying glass, and then the magnifying glass is moved above the camera module to magnify the camera's imaging image, making it easier for people to determine the camera's imaging quality.

[0004] However, the distance between the magnifying glass and the camera module is small, and it is difficult for people to insert their fingers into the gap between the magnifying glass and the camera module and rotate the rotating lens of the camera module to focus. When focusing, it is often necessary to move the magnifying glass away from directly above the camera module, and then focus the camera; after focusing is completed, move the magnifying glass to directly above the camera, and then observe the imaging quality of the camera; the entire operation process is relatively cumbersome, which greatly reduces the efficiency of the camera module focusing test. Summary of the invention

[0005] In order to improve the efficiency of camera module focus testing, the present application provides a manual focusing device.

[0006] The manual focusing device provided in this application adopts the following technical solution:

[0007] A manual focusing device comprises a test fixture, wherein the test fixture is equipped with a camera fixture for fixing a camera module; a magnifying glass is rotatably installed on the top of the test fixture, wherein the magnifying glass is located above the camera fixture, and when the camera module is fixed to the camera fixture, a structural gap is formed between the magnifying glass and the camera module;

[0008] The manual focusing device also includes a focusing disk, the thickness of which is smaller than the width of the structural gap; a mounting hole is provided in the middle of the focusing disk, and the mounting hole is used to match and snap-fit ​​with the rotating lens of the camera module. When the focusing disk is mounted on the rotating lens through the mounting hole, the focusing disk and the rotating lens are circumferentially linked.

[0009] By adopting the above technical solution, after the camera module is installed on the camera tooling, the magnifying glass is rotated to move the magnifying glass to the top of the camera module, and people can observe the image of the camera module through the magnifying glass to determine the imaging quality of the camera. When it is necessary to rotate the rotating lens of the camera module for focusing, the focusing disk is passed through the structural gap between the magnifying glass and the camera module, and the mounting hole of the focusing disk is clamped on the outer peripheral side of the rotating lens. At this time, the outer ring of the focusing disk can be exposed in the structural gap, and the rotating lens can be easily driven to rotate by rotating the focusing disk, so that the focusing operation of the camera module can be completed quickly, greatly improving the efficiency of the camera module focusing test.

[0010] Optionally, an integrally formed outer protrusion is provided in the middle of the focusing disc, and the mounting hole is opened in the outer protrusion.

[0011] By adopting the above-mentioned technical solution, by setting an outer protrusion and opening a mounting hole on the outer protrusion, the outer protrusion can be directed downward when the focusing disk passes through the structural gap. The outer protrusion protruding downward can be more conveniently engaged with the outer peripheral side of the rotating lens, thereby further improving the convenience of installing the focusing disk on the camera module.

[0012] Optionally, an elastic mesh pad is provided between the test fixture and the magnifying glass, and the elastic mesh pad is arranged horizontally and wrapped around the outer peripheral side of the camera tooling; a support rod is fixed to the bottom of the elastic mesh pad, and one end of the support rod away from the elastic mesh pad is connected to the test fixture; when the mounting hole of the focusing disk is mounted on the rotating lens, the focusing disk is against the elastic mesh pad.

[0013] By adopting the above-mentioned technical solution, after the focusing disk passes through the structural gap and is installed on the rotating lens of the camera module, it can be pressed against the elastic mesh pad under the action of its own gravity. At this time, the friction between the elastic mesh pad and the focusing disk can reduce the possibility of arbitrary rotation of the focusing disk, thereby reducing the possibility of the rotating lens rotating when people observe the imaging quality of the camera module through a magnifying glass, thereby improving the accuracy of the focusing test results.

[0014] Optionally, an annular groove is provided on the upper surface of the test fixture, and the annular groove is arranged around the outer circumference of the camera tooling; an annular turntable is rotatably installed in the annular groove, and one end of the support rod away from the elastic mesh pad is fixedly connected to the annular turntable; the test fixture is provided with a hand-adjustable knob for driving the annular turntable to rotate.

[0015] By adopting the above technical solution, when people adjust the focal length of the camera module, directly rotating the annular turntable easily causes the rotating lens to rotate too much, exceeding the focal length that people need to adjust. The present application sets a manual adjustment knob to drive the annular turntable to rotate, and the rotation angle of the annular turntable driven by turning the manual adjustment knob is smaller, thereby making the rotation angle of the focus plate smaller, which is conducive to improving the accuracy of the camera module focus test and reducing the situation where people adjust the focus too much at one time and need to adjust the focus repeatedly.

[0016] Optionally, a side of the test fixture is provided with a clearance groove, and the clearance groove is partially connected to the annular groove; the manual adjustment knob is rotatably mounted in the clearance groove and partially exposed in the clearance groove, and a stop column is fixed on the side of the manual adjustment knob close to the annular turntable, and the stop column is eccentrically arranged with the manual adjustment knob;

[0017] A plurality of guide plates are provided at the edge of the annular turntable close to the manual adjustment knob, and all the guide plates are arranged equidistantly around the central axis of the annular turntable; a guide groove for a stop column to enter is provided on the side of each guide plate away from the annular turntable, and the extension direction of the guide groove is arranged in the same direction as the radial direction of the annular turntable; when the manual adjustment knob is rotated, the stop column intermittently enters the guide groove.

[0018] By adopting the above technical solution, the manual adjustment knob is partially exposed on the outer side of the test fixture. When people manually turn the manual adjustment knob, the stopper on the side of the manual adjustment knob can make a circular motion around the central axis of the manual adjustment knob, and the stopper can intermittently enter the guide groove of the guide plate and promote the circular rotation to a certain angle, which plays an effect of finely adjusting the focal length of the rotating lens. In addition, during the rotation of the stopper, the stopper can be intermittently rotated to a position exposed to the test fixture. After the focusing is completed, the stopper is kept on the outside of the test fixture. At this time, if people accidentally touch the manual adjustment knob and rotate the manual adjustment knob, it will not cause the rotation of the annular turntable, which is conducive to further improving the accuracy of the camera module focus test.

[0019] Optionally, the manual adjustment knob is embedded with a first magnet, and the first magnet and the stop post are symmetrically arranged on both sides of the central axis of the manual adjustment knob; a second magnet is installed inside the detection fixture, and the second magnet is located below the give way groove, and the magnetic pole of the second magnet is opposite to that of the first magnet; when the first magnet and the second magnet are magnetically attracted, the stop post is exposed on the outer side of the detection fixture.

[0020] By adopting the above-mentioned technical solution, the setting of the first magnet and the second magnet can keep the stop post exposed on the outer side of the detection fixture when the manual adjustment knob is normally kept, thereby reducing the rotation of the ring turntable when people accidentally touch the manual adjustment knob, thereby reducing the possibility of accidental rotation of the focusing disk and the rotating lens.

[0021] Optionally, the inner bottom wall of the give way slot is provided with a mounting slot, and the mounting slot passes through the outer side surface of the detection fixture; the middle part of the manual adjustment knob is rotatably connected with a rotating shaft, and the rotating shaft is matched and installed in the give way slot; an integrally formed baffle is provided in the middle part of the rotating shaft, and a first spring is also provided between the rotating shaft and the inner bottom wall of the give way slot. When the rotating shaft is installed in the give way slot, the first spring normally causes the baffle to rest against the top wall of the mounting slot, and at this time, the baffle column and the guide plate are at the same horizontal height.

[0022] By adopting the above-mentioned technical solution, when the focal length of the camera module that needs to be adjusted at one time is large, the manual adjustment knob can be moved downward together with the rotating shaft by pressing the manual adjustment knob and squeezing the first spring, so that the manual adjustment knob can be moved to the bottom of the guide plate; at this time, people can quickly drive the annular turntable to rotate by applying force to the annular turntable or the support rod, thereby quickly rotating the rotating lens, thereby improving the convenience of focusing test of the camera module.

[0023] Optionally, an annular baffle is fixed on the upper surface of the test fixture, the annular baffle is coaxially arranged with the annular turntable, and the inner diameter of the annular baffle is smaller than the outer diameter of the annular turntable; the annular baffle is installed with an elastic component, and the elastic component normally drives the annular turntable to move in a direction away from the annular baffle.

[0024] By adopting the above-mentioned technical solution, the setting of the annular baffle can play the role of fixing the annular turntable and reduce the possibility of the annular turntable detaching from the annular groove; the elastic component at the bottom of the annular baffle has a force that normally forces the annular turntable to move away from the annular baffle, which can play the role of fixing the annular baffle and reduce the possibility of the annular baffle rotating arbitrarily in the annular groove, thereby improving the accuracy of the camera module focusing test.

[0025] Optionally, a movable groove is provided on the bottom surface of the annular baffle, and the elastic component includes a top pressure block and a second spring, the top pressure block is movably installed in the movable groove, and the second spring is installed between the top pressure block and the movable groove; the second spring normally makes the top pressure block exposed in the movable groove.

[0026] By adopting the above technical solution, after the annular turntable is rotatably installed in the annular groove, the pressing block can always be pressed against the upper surface of the annular turntable under the elastic force of the second spring, thereby limiting the arbitrary rotation of the annular turntable.

[0027] Optionally, a plurality of limit blocks are protruding from the lower surface of the focusing disk, and each of the limit blocks is hemispherical.

[0028] By adopting the above-mentioned technical solution, when the focusing disk is installed on the rotating lens of the camera module, the limit block on the lower surface of the focusing disk can be embedded in the mesh holes of the elastic mesh pad, reducing the possibility of relative movement between the focusing disk and the elastic mesh pad, which is conducive to further improving the accuracy of the camera module focusing test.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. By setting a focusing disk, after the focusing disk passes through the structural gap between the magnifying glass and the camera module, the mounting hole of the focusing disk is clamped on the outer peripheral side of the rotating lens. By rotating the focusing disk, the rotating lens can be easily driven to rotate, thereby quickly completing the focusing operation of the camera module and improving the efficiency of the camera module focusing test;

[0031] 2. By setting the elastic mesh pad, the focusing plate can be connected to the outer peripheral side of the rotating lens through the mounting hole and can be pressed against the elastic mesh pad under the action of gravity itself, thereby reducing the possibility of the rotating lens rotating when people observe the imaging quality of the camera module through a magnifying glass, and improving the accuracy of the focusing test results;

[0032] 3. By setting a manual adjustment knob, when people turn the manual adjustment knob, the stopper can intermittently enter the guide groove and push the guide plate and the arc-shaped turntable to rotate, thereby adjusting the focal length of the rotating lens; after the focusing is completed, by keeping the stopper on the outside of the test fixture, when people accidentally touch the manual adjustment knob, it will not cause the rotation of the annular turntable, which is conducive to further improving the accuracy of the focus test of the camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall structure of Example 1;

[0034] Figure 2 is an installation diagram of the camera module in Example 1 installed on the camera tooling;

[0035] Figure 3 is a half-section view of the focusing disk in Example 1;

[0036] Figure 4 is a schematic diagram of the overall structure of Example 2;

[0037] Figure 5 yes Figure 4 Sectional view along AA direction;

[0038] Figure 6 is a schematic structural diagram of the focusing disk in Example 2;

[0039] Figure 7 yes Figure 5 The enlarged view of point B in the middle;

[0040] Figure 8 yes Figure 7 Enlarged view of point C in the middle;

[0041] Fig. 9 is a schematic diagram of the structure of the annular baffle and the manual adjustment knob in Example 2;

[0042] Fig.10 It is a schematic diagram of the matching relationship between the baffle column and the annular baffle plate in Example 2.

[0043] Explanation of the accompanying drawings: 1. test fixture; 11. camera tooling; 111. lower clamping plate; 112. upper clamping plate; 113. accommodating groove; 114. structural groove; 12. magnifying glass; 121. connecting rod; 13. structural gap; 14. annular groove; 15. clearance groove; 16. mounting groove; 161. stopper; 17. card slot; 2. focusing plate; 21. mounting hole; 22. outer protrusion; 23. limit block; 24. structural groove; 3. camera module; 31. rotating lens; 4. elastic mesh pad; 41. support rod; 42. annular turntable; 43. guide plate; 431. guide groove; 5. manual adjustment knob; 51. stop column; 52. first magnet; 53. rotating shaft; 531. stop platform; 54. first spring; 6. annular baffle plate; 61. movable groove; 7. elastic component; 71. top pressure block; 72. second spring. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-10 This application is described in further detail.

[0045] Example 1

[0046] The embodiment of the present application discloses a manual focusing device.

[0047] Reference Figure 1 , Figure 2 A manual focusing device comprises a test fixture 1 and a focusing disk 2; the test fixture 1 is equipped with a camera tooling 11 for fixing a camera module 3, and the camera tooling 11 of this embodiment comprises a lower clamping plate 111 fixed to the test fixture 1 and an upper clamping plate 112 hinged to the lower clamping plate 111 at one side, a receiving groove 113 for accommodating the camera module 3 is opened on the side of the lower clamping plate 111 facing the upper clamping plate 112, a structural groove 114 for allowing the camera module 3 to pass through is opened on the side of the upper clamping plate 112 facing the lower clamping plate 111, the structural groove 114 passes through the side of the upper clamping plate 112 away from the lower clamping plate 111, and the outer diameter of the structural groove 114 is greater than the outer diameter of the rotating lens 31 of the camera module 3. When the camera module 3 is installed in the receiving groove 113 , the upper clamping plate 112 is covered on the lower clamping plate 111 to jointly position the camera module 3 , and the rotating lens 31 of the camera module 3 can pass through the structural groove 114 and be partially exposed on the upper clamping plate 112 .

[0048] Reference Figure 1 , Figure 2 , a connecting rod 121 is fixed to the upper surface of the test fixture 1, and a magnifying glass 12 is rotatably connected to the upper end of the connecting rod 121; in this embodiment, the minimum distance between the magnifying glass 12 and the upper surface of the test fixture 1 is greater than the distance between the upper surface of the camera fixture 11 and the upper surface of the test fixture 1. When the camera module 3 is installed on the camera fixture 11, the magnifying glass 12 can be rotated to move the magnifying glass 12 to the top of the camera fixture 11, and a structural gap 13 is formed between the magnifying glass 12 and the camera module 3.

[0049] Reference Figure 3 The focusing disk 2 of the present embodiment is set in a disc shape, and an outer protrusion 22 protruding outward is provided at the center of the focusing disk 2. The outer protrusion 22 of the present embodiment is formed integrally with the focusing disk 2; the focusing disk 2 is also provided with a plurality of structural grooves 24, all of which are located on the outer peripheral side of the outer protrusion 22, and all of the structural grooves 24 are arranged equidistantly around the central axis of the focusing disk 2; the setting of the structural grooves 24 is used to reduce the weight of the focusing disk 2, which is convenient for people to take the focusing disk 2 and helps to reduce people's labor intensity.

[0050] Reference Figure 2 , Figure 3 The thickness of the focusing disk 2 is smaller than the width of the structural gap 13, so that the focusing disk 2 can smoothly enter between the magnifying glass 12 and the camera module 3; a mounting hole 21 is opened at the center position of the outer protrusion 22, and the shape of the mounting hole 21 is adapted to the shape of the rotating lens 31 of the camera module 3. When the focusing disk 2 is mounted on the rotating lens 31 through the mounting hole 21, the focusing disk 2 and the rotating lens 31 are circumferentially linked, so that the rotation of the focusing disk 2 can drive the rotating lens 31 to rotate, which is convenient for the focusing operation of the camera module 3.

[0051] Reference Figure 2 , Figure 3 In the present embodiment, the inner wall of the mounting hole 21 is provided with a serrated groove, and the outer peripheral wall of the rotating lens 31 is provided with a serrated pattern; after the focusing disk 2 is mounted on the rotating lens 31 through the mounting hole 21, the serrated groove and the serrated pattern can engage with each other, so that the rotation of the focusing disk 2 can drive the rotating lens 31 to rotate, thereby achieving the focusing effect.

[0052] The implementation principle of Example 1 of the present application is:

[0053] When it is necessary to perform a focus test on the camera module 3 to determine the imaging quality of the camera module 3, the camera module 3 is installed on the camera tooling 11, and the magnifying glass 12 is rotated to move the magnifying glass 12 to the top of the camera module 3, so as to magnify the image of the camera module 3, and facilitate people to observe the imaging quality of the camera. When it is necessary to rotate the rotating lens 31 to perform the focusing operation of the camera module 3, the focusing disk 2 is placed in the structural gap 13 and the mounting hole 21 of the focusing disk 2 is matched and snapped to the outer peripheral side of the rotating lens 31. At this time, the outer ring of the focusing disk 2 can be exposed in the structural gap 13, and the rotating lens 31 can be easily driven to rotate by rotating the focusing disk 2, so that the focusing operation of the camera module 3 can be completed quickly, greatly improving the efficiency of the focusing test of the camera module 3.

[0054] Example 2

[0055] The embodiment of the present application discloses a manual focusing device.

[0056] Reference Figure 4 , Figure 5 The difference between the manual focusing device disclosed in the embodiment of the present application and the embodiment 1 is that:

[0057] In this embodiment, an annular groove 14 is provided on the upper surface of the test fixture 1. The annular groove 14 is located on the outer peripheral side of the camera fixture 11, and the central axis of the annular groove 14 coincides with the central axis of the camera module 3 installed in the camera fixture 11. In this embodiment, the annular groove 14 is set as a stepped groove, and the diameter of the notch of the annular groove 14 is larger than the diameter of the bottom of the annular groove 14, so that a stepped surface is formed in the annular groove 14. An annular turntable 42 is rotatably installed in the annular groove 14, and the annular turntable 42 abuts against the stepped surface of the annular groove 14, and the annular turntable 42 can rotate circumferentially in the annular groove 14 and around the central axis of the annular groove 14.

[0058] Reference Figure 4 , Figure 5 , a plurality of support rods 41 are fixed on the upper surface of the annular turntable 42. In this embodiment, there are three support rods 41, which are arranged equidistantly around the central axis of the annular turntable 42; one end of each support rod 41 away from the annular turntable 42 is commonly connected to an elastic mesh pad 4, and the distance between the elastic mesh pad 4 and the test fixture 1 is smaller than the distance between the magnifying glass 12 and the test fixture 1, so that the elastic mesh pad 4 is located below the magnifying glass 12. The elastic mesh pad 4 is horizontally arranged and wound around the outer peripheral side of the camera module 3. The elastic mesh pad 4 of this embodiment is also arranged in a circular ring shape. The elastic mesh pad 4 is made of nylon yarn with a high damping coefficient, which is conducive to improving the friction resistance of the elastic mesh pad 4.

[0059] Reference Figure 4 , Figure 6In this embodiment, a limit block 23 protruding outward is provided on the lower surface of the focusing disk 2, and the limit block 23 and the outer protrusion 22 are located on the same side of the focusing disk 2; the shape of each limit block 23 is set to be hemispherical. When the focusing disk 2 passes through the structural gap 13 and the mounting hole 21 of the focusing disk 2 is matched and clamped on the outer peripheral side of the rotating lens 31, the focusing disk 2 can be pressed against the elastic mesh pad 4 under the action of its own gravity, and the limit block 23 on the lower surface of the focusing disk 2 can be embedded in the mesh holes of the elastic mesh pad 4, thereby reducing the possibility of relative movement between the focusing disk 2 and the elastic mesh pad 4, and improving the accuracy of the focusing test of the camera module 3.

[0060] Reference Figure 4 , Figure 7 , an annular baffle 6 is provided on the upper surface of the test fixture 1, and the annular baffle 6 is used to fix the annular turntable 42 in the annular groove 14 to reduce the possibility of the annular turntable 42 being separated from the annular groove 14; the annular baffle 6 of this embodiment is coaxially arranged with the annular turntable 42, the outer diameter of the annular baffle 6 is larger than the outer diameter of the annular turntable 42, and the inner diameter of the annular baffle 6 is smaller than the outer diameter of the annular turntable 42, so that the annular baffle 6 can partially block the annular turntable 42 and limit the annular baffle 6; the part of the annular baffle 6 exposed from the annular turntable 42 is fixedly connected to the test fixture 1 by fastening bolts.

[0061] Reference Figure 8 , a plurality of movable grooves 61 are provided on the bottom surface of the annular baffle 6. In the present embodiment, the number of movable grooves 61 is provided in three groups, and the three groups of movable grooves 61 are evenly distributed around the central axis of the annular baffle 6; an elastic component 7 is installed in each movable groove 61, and the elastic component 7 of the present embodiment comprises a top pressure block 71 and a second spring 72, wherein the top pressure block 71 is movably installed in the movable groove 61, and the second spring 72 is installed between the top pressure block 71 and the movable groove 61; the second spring 72 is normally in a compressed state, and can always generate an elastic force acting on the top pressure block 71 and force the top pressure block 71 to be partially exposed in the movable groove 61 and pressed against the annular turntable 42, thereby limiting the free rotation of the annular turntable 42; in the present embodiment, the end of the top pressure block 71 away from the second spring 72 is set as an arc surface, which is used to reduce the wear caused by friction between the top pressure block 71 and the annular turntable 42.

[0062] Reference Fig. 9 , Fig.10A plurality of guide plates 43 are fixed to the lower surface of the annular turntable 42. All guide plates 43 are arranged equidistantly around the central axis of the annular turntable 42, and each guide plate 43 is located at the edge of the annular turntable 42. In this embodiment, the number of guide plates 43 is set to six. In other embodiments, the number of guide plates 43 can also be three, four or five, which can be selectively set according to actual needs. A guide groove 431 is opened on one side of each guide plate 43 away from the central axis of the annular turntable 42, and the extension direction of the guide groove 431 is set in the same direction as the radial direction of the annular turntable 42.

[0063] Reference Figure 7 A clearance groove 15 is provided on the side of the test fixture 1. The clearance groove 15 is located below the stepped surface of the annular groove 14 and is partially connected to the annular groove 14. A rotatable hand-adjusting knob 5 is installed in the clearance groove 15, and the hand-adjusting knob 5 is partially exposed from the clearance groove 15. The hand-adjusting knob 5 is used to drive the annular turntable 42 to rotate, thereby driving the elastic mesh pad 4 and the focusing disk 2 resting on the upper surface of the elastic mesh pad 4 to rotate in a circumferential direction, thereby being able to finely focus the rotating lens 31.

[0064] Reference Figure 7 In this embodiment, the thickness of the manual adjustment knob 5 is less than the height of the clearance groove 15, so that the manual adjustment knob 5 can move up and down in the clearance groove 15. The inner bottom wall of the clearance groove 15 is provided with a mounting groove 16, and the mounting groove 16 passes through the outer side of the detection fixture; the middle part of the manual adjustment knob 5 is rotatably connected with a coaxially arranged rotating shaft 53, and the outer diameter of the rotating shaft 53 is set equal to the width of the mounting groove 16, so that the rotating shaft 53 can match and enter the mounting groove 16, and then the manual adjustment knob 5 can match and enter the clearance groove 15; after the rotating shaft 53 enters the mounting groove 16, the stopper 161 can block the notch of the mounting groove 16, which is used to reduce the possibility of the rotating shaft 53 being separated from the mounting groove 16 and causing the manual adjustment knob 5 to be separated from the clearance groove 15.

[0065] Reference Figure 7 , Fig. 9 , an integrally formed stopper 531 is provided on the outer peripheral side of the rotating shaft 53, and the outer diameter of the stopper 531 is larger than the outer diameter of the rotating shaft 53; a clamping groove 17 is provided on the side wall of the mounting groove 16, and the outer diameter of the clamping groove 17 is set equal to the outer diameter of the stopper 531, and the height of the clamping groove 17 is larger than the thickness of the stopper 531. A first spring 54 is fixed to the bottom of the mounting groove 16. When the rotating shaft 53 is matched and installed in the mounting groove 16, the first spring 54 is in a compressed state and generates an elastic force acting on the rotating shaft 53, so that the stopper 531 is pressed against the inner top wall of the clamping groove 17. When the manual adjustment knob 5 is pressed, the manual adjustment knob 5 can squeeze the first spring 54 and move downward.

[0066] Reference Figure 7 , Fig. 9An integrally formed stop column 51 is fixed to the upper surface of the manual adjustment knob 5, and the stop column 51 is eccentrically arranged with the rotating shaft 53; when the manual adjustment knob 5 is installed in the clearance groove 15, the manual adjustment knob 5 can normally be located at the same horizontal height with the guide plate 43 under the elastic force of the first spring 54.

[0067] Reference Fig. 9 , Fig.10 In this embodiment, the manual adjustment knob 5 is partially located directly below the annular turntable 42. When the manual adjustment knob 5 is rotated, the circular movement path of the blocking column 51 can simultaneously intersect with the guide grooves 431 of two adjacent guide plates 43, so that when the manual adjustment knob 5 is rotated, the blocking column 51 can intermittently enter the guide grooves 431 and push the next guide plate 43 to move to the position of the previous guide plate 43, thereby intermittently driving the annular turntable 42 to rotate.

[0068] Reference Figure 4 , Fig. 9 The upper surface of the manual adjustment knob 5 is also embedded with a first magnet 52, and the first magnet 52 and the stop column 51 are symmetrically arranged on both sides of the central axis of the manual adjustment knob 5; the second magnet is installed inside the detection fixture, and the second magnet is located below the clearance groove 15, and the second magnet has opposite magnetic poles to the first magnet 52. When the part of the manual adjustment knob 5 provided with the first magnet 52 rotates to the inside of the installation groove 16, the first magnet 52 and the second magnet can generate magnetic attraction, so that the part of the manual adjustment knob 5 provided with the first magnet 52 can stay in the installation groove 16, and the stop column 51 of the manual adjustment knob 5 can be exposed to the detection fixture. When people accidentally touch the manual adjustment knob 5, it is not easy to cause the annular turntable 42 to rotate, which is conducive to improving the accuracy of the focus test of the camera module 3.

[0069] The implementation principle of Example 2 of the present application is:

[0070] After the focusing disk 2 passes through the structural gap 13 and is clamped on the outer peripheral side of the rotating lens 31, it can be abutted against the elastic mesh pad 4. At this time, by turning the manual adjustment knob 5, the annular turntable 42 can be driven to rotate a certain angle, thereby driving the focusing disk 2 and the rotating lens 31 to rotate a certain angle, and the rotating lens 31 can be finely focused. In addition, when the rotating lens 31 needs to focus at a large angle, by pressing the manual adjustment knob 5, the blocking column 51 and the guide plate 43 are staggered in the height direction. At this time, people apply force to the annular turntable 42 or the support rod 41 to quickly drive the annular turntable 42 to rotate, which is conducive to improving the convenience of the camera module 3 for focusing test.

[0071] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A manual focusing device, characterized in that: The test jig (1) comprises a camera fixture (11) installed thereon for fixing a camera module (3); a magnifying glass (12) is rotatably installed on the top of the test jig (1), the magnifying glass (12) being located above the camera fixture (11); when the camera module (3) is fixed to the camera fixture (11), a structural gap (13) is formed between the magnifying glass (12) and the camera module (3); The manual focusing device further comprises a focusing disk (2), wherein the thickness of the focusing disk (2) is smaller than the width of the structural gap (13); a mounting hole (21) is provided in the middle of the focusing disk (2), wherein the mounting hole (21) is used to match and engage with a rotating lens (31) of a camera module (3); when the focusing disk (2) is mounted on the rotating lens (31) through the mounting hole (21), the focusing disk (2) and the rotating lens (31) are circumferentially linked; the test fixture ( An elastic mesh pad (4) is provided between the camera tooling (11) and the magnifying glass (12), the elastic mesh pad (4) being arranged horizontally and wrapped around the outer peripheral side of the camera tooling (11); a support rod (41) is fixed to the bottom of the elastic mesh pad (4), and one end of the support rod (41) away from the elastic mesh pad (4) is connected to the test fixture (1); when the mounting hole (21) of the focusing disk (2) is mounted on the rotating lens (31), the focusing disk (2) abuts against the elastic mesh pad (4).

2. The manual focusing device according to claim 1, characterized in that: An integrally formed outer convex portion (22) is provided in the middle of the focusing disk (2), and the mounting hole (21) is formed in the outer convex portion (22).

3. The manual focusing device according to claim 1, characterized in that: The upper surface of the test fixture (1) is provided with an annular groove (14), and the annular groove (14) is arranged around the outer circumference of the camera fixture (11); an annular turntable (42) is rotatably mounted in the annular groove (14), and one end of the support rod (41) away from the elastic mesh pad (4) is fixedly connected to the annular turntable (42); and the test fixture (1) is provided with a hand-adjustable knob (5) for driving the annular turntable (42) to rotate.

4. The manual focusing device according to claim 3, characterized in that: A clearance groove (15) is provided on the side of the test fixture (1), and the clearance groove (15) is partially connected to the annular groove (14); the manual adjustment knob (5) is rotatably mounted on the clearance groove (15) and partially exposed from the clearance groove (15); a stop column (51) is fixed on one side of the manual adjustment knob (5) close to the annular turntable (42), and the stop column (51) is eccentrically arranged with respect to the manual adjustment knob (5); A plurality of guide plates (43) are provided at an edge position of a side of the annular turntable (42) close to the manual adjustment knob (5), and all the guide plates (43) are arranged equidistantly around the central axis of the annular turntable (42); a guide groove (431) for a stopper column (51) to enter is provided on a side of each guide plate (43) away from the annular turntable (42), and an extension direction of the guide groove (431) is arranged in the same direction as a radial direction of the annular turntable (42); when the manual adjustment knob (5) is rotated, the stopper column (51) intermittently enters the guide groove (431).

5. The manual focusing device according to claim 4, characterized in that: The manual adjustment knob (5) is embedded with a first magnet (52), and the first magnet (52) and the blocking column (51) are symmetrically arranged on both sides of the central axis of the manual adjustment knob (5); a second magnet is installed inside the test fixture (1), and the second magnet is located below the clearance groove (15), and the second magnet and the first magnet (52) have opposite magnetic poles; when the first magnet (52) and the second magnet are magnetically attracted, the blocking column (51) is exposed on the outer side of the test fixture (1).

6. The manual focusing device according to claim 4, characterized in that: The inner bottom wall of the clearance groove (15) is provided with a mounting groove (16), and the mounting groove (16) passes through the outer side surface of the test fixture (1); the middle part of the manual adjustment knob (5) is rotatably connected to a rotating shaft (53), and the rotating shaft (53) is matched and installed in the clearance groove (15); the middle part of the rotating shaft (53) is provided with an integrally formed stopper (531), and a first spring (54) is further provided between the rotating shaft (53) and the inner bottom wall of the clearance groove (15); when the rotating shaft (53) is installed in the clearance groove (15), the first spring (54) normally causes the stopper (531) to abut against the top wall of the mounting groove (16), and at this time, the stopper column (51) and the guide plate (43) are located at the same horizontal height.

7. The manual focusing device according to claim 6, characterized in that: An annular baffle (6) is fixed to the upper surface of the test fixture (1); the annular baffle (6) is coaxially arranged with the annular turntable (42), and the inner diameter of the annular baffle (6) is smaller than the outer diameter of the annular turntable (42); the annular baffle (6) is installed with an elastic component (7), and the elastic component (7) normally drives the annular turntable (42) to move in a direction away from the annular baffle (6).

8. The manual focusing device according to claim 7, characterized in that: The bottom surface of the annular baffle (6) is provided with a movable groove (61), and the elastic component (7) comprises a top pressure block (71) and a second spring (72), wherein the top pressure block (71) is movably mounted in the movable groove (61), and the second spring (72) is mounted between the top pressure block (71) and the movable groove (61); the second spring (72) normally causes the top pressure block (71) to be exposed outside the movable groove (61).

9. The manual focusing device according to claim 1, characterized in that: A plurality of limit blocks (23) are protrudingly provided on the lower surface of the focusing disk (2), and each of the limit blocks (23) is arranged in a hemispherical shape.

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