Back focus test adjusting device

Abstract

The utility model belongs to the technical field of lens production equipment, and discloses back focus test adjusting equipment, which comprises a back focus measuring device used for measuring the back focus distance of a lens module; the first focusing torque measuring device is used for measuring whether the torque between the lens and the lens base is within a preset specification; the second focusing and torque measuring device is used for adjusting the depth of the lens screwed into the lens base so as to adjust the rear focus distance of the lens module; and the debugging transfer device comprises a debugging translation mechanism and a debugging clamping mechanism, the debugging clamping mechanism is used for clamping the lens module, and an execution end of the debugging translation mechanism is connected with the debugging clamping mechanism so as to drive the debugging clamping mechanism to translate along the second direction. The back focus test adjusting device provided by the utility model can automatically measure the back focus distance and the locking torque of the lens module, and adjust the back focus distance of the lens module according to the actual measurement result of the back focus measuring device, thereby improving the qualified rate and the production efficiency of the lens module.

Description

Technical Field

[0001] This utility model relates to the field of lens production equipment technology, and in particular to a back focus testing and adjustment device. Background Technology

[0002] One type of lens module on the market is assembled by threading a lens to a lens mount. The depth to which the lens is screwed into the lens mount affects the position of the lens elements, thus affecting the back focus of the lens module. Currently, after assembly, the back focus of each lens module needs to be measured individually. Modules that are not within specifications need to be removed from the production line for manual adjustment, which affects production efficiency.

[0003] Therefore, there is an urgent need for a back focus testing and adjustment device to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a back focus testing and adjustment device that automatically measures the back focus distance and locking torque of a lens module, and adjusts the back focus distance of the lens module according to the actual measurement results of the back focus measuring device, thereby improving the pass rate and production efficiency of the lens module.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A back focus testing and adjustment device is provided, including a back focus adjustment base plate and a plate disposed thereon:

[0007] Back focus measuring device, used to measure the back focus distance of the lens module;

[0008] The first focusing torque measuring device is located downstream of the back focus measuring device along the second horizontal direction. The first focusing torque measuring device is used to measure whether the torque between the lens and the lens mount is within the preset specification.

[0009] The second focusing and torque measuring device is located downstream of the first focusing and torque measuring device along the second direction. The second focusing and torque measuring device is used to adjust the depth of the lens screwed into the lens mount in order to adjust the back focal distance of the lens module.

[0010] The debugging and transfer device includes a debugging translation mechanism and a debugging clamping mechanism. The debugging clamping mechanism is used to clamp the lens module. The execution end of the debugging translation mechanism is connected to the debugging clamping mechanism to drive the debugging clamping mechanism to translate along the second direction.

[0011] Preferably, the back focus measuring device includes:

[0012] A rear-focus camera mechanism, including a rear-focus camera mount and a digital camera mounted thereon;

[0013] The back focus imaging mechanism includes a back focus test base, an imaging lifting assembly, and an imaging adjustment assembly. The back focus test base is used to fix the lens module directly below the digital camera. The imaging adjustment assembly is installed at the output end of the imaging lifting assembly and is located directly below the lens module to be tested. The imaging lifting assembly is used to drive the imaging adjustment assembly to move vertically up and down. The imaging adjustment assembly is used to clamp the imaging plate and adjust the tilt angle of the imaging plate.

[0014] The test pressing mechanism includes a pressing drive and a pressing rod. The pressing drive is mounted on the back focal length test base, and the pressing rod is connected to the actuating end of the pressing drive. The pressing drive is used to drive the pressing rod to press against the lens mount of the lens module from above.

[0015] Preferably, the first end of the pressing rod is connected to the actuating end of the pressing drive, and the second end of the pressing rod is provided with a pressing clearance notch, which is used to avoid the lens of the lens module;

[0016] The second end of the pressure rod is also provided with a buffer shaft and a buffer spring. The buffer shaft passes through the second end of the pressure rod, and the buffer spring is sleeved on the buffer shaft. The two ends of the buffer spring are respectively connected to or abut against the second end of the pressure rod and the buffer shaft. The pressure rod presses against the lens of the lens module through the buffer shaft.

[0017] Preferably, the first focusing torque measuring device includes:

[0018] The first focusing torque measuring seat is used to support the lens module, and the first focusing torque measuring seat can measure the torque on the lens module thereon.

[0019] The first rotary clamping mechanism includes a first torque rotary motor and a first torque gripper. The first torque gripper is mounted on the actuating end of the first torque rotary motor. The first torque gripper is used to clamp the lens of the lens module. The first torque rotary motor is used to drive the first torque gripper to rotate around a vertical axis.

[0020] The first torque lifting mechanism has a first torque rotary motor installed at the execution end of the first torque lifting mechanism. The first torque lifting mechanism can drive the first torque gripper to move downwards and press against the lens of the lens module.

[0021] Preferably, the second focusing torque measuring device includes:

[0022] The second focusing torque measuring seat is used to support the lens module, and the second focusing torque measuring seat can measure the torque on the lens module thereon.

[0023] The second rotary clamping mechanism includes a second torque rotary motor and a second torque gripper. The second torque gripper is mounted on the actuating end of the second torque rotary motor. The second torque gripper is used to clamp the lens of the lens module. The second torque rotary motor is used to drive the second torque gripper to rotate around the vertical axis.

[0024] The second torque lifting mechanism has a second torque rotary motor installed at the execution end of the second torque lifting mechanism. The second torque lifting mechanism can drive the first torque gripper to move downwards and press against the lens of the lens module.

[0025] Preferably, a first weight-adding block is mounted on the upper end of the first torque rotary motor, and a first support seat is mounted on the lower end of the body of the first torque gripper, the first support seat being able to press downward against the lens of the lens module; and / or

[0026] A second weight block is installed at the upper end of the second torque rotary motor, and a second support is installed at the lower end of the body of the second torque gripper. The second support can press down against the lens of the lens module.

[0027] Preferably, two back focus measuring devices are provided at intervals along the second direction;

[0028] Both the first focusing torsion measuring seat and the first rotating clamping mechanism are provided in two at intervals along the second direction;

[0029] The second focusing torsion measuring seat and the second rotating clamping mechanism are both provided in two at intervals along the second direction.

[0030] Preferably, the debugging clamping mechanism includes:

[0031] A testing and transport base is installed on the execution end of the testing and translation mechanism;

[0032] The debugging lifting assembly includes a debugging lifting drive and a debugging lifting plate, wherein the two ends of the debugging lifting drive are respectively connected to the debugging transport base and the debugging lifting plate;

[0033] The adjustment telescopic assembly includes an adjustment telescopic drive and an adjustment telescopic plate. The two ends of the adjustment telescopic drive are respectively connected to the adjustment lifting plate and the adjustment telescopic plate. The adjustment telescopic drive is used to drive the adjustment telescopic plate to move along a horizontal first direction to approach or move away from the back focus measurement station or the focus torque measurement station.

[0034] The adjustment gripper is installed on the adjustment telescopic plate and is used to hold the lens module.

[0035] Preferably, two adjustment telescopic components are provided, and the two adjustment telescopic components are installed at intervals along the second direction on the adjustment lifting plate; and / or

[0036] Two debugging grippers are installed on the debugging telescopic plate, and the two debugging grippers are installed at intervals along the second direction on the debugging telescopic plate.

[0037] Preferably, the debugging translation mechanism includes:

[0038] The debugging translation linear module has its execution end connected to the debugging transport base, which can drive the debugging transport base to move along the second direction;

[0039] The adjustment translation slide rail extends along the second direction and is arranged side by side with the adjustment translation linear module;

[0040] Two debugging translation sliders are slidably mounted on the debugging translation slide rail along the second direction, and the debugging transport base is mounted on the two debugging translation sliders.

[0041] The beneficial effects of this utility model are:

[0042] The back focus testing and adjustment equipment provided by this utility model first measures the back focus distance of the lens module using a back focus measuring device. After the measurement is completed, an adjustment and transfer device moves the lens module to a first focusing and torque measuring device. The first focusing and torque measuring device measures whether the locking torque between the lens and the lens mount of the lens module is within a preset specification, eliminating products with unqualified locking. Then, the adjustment and transfer device moves the lens module to a second focusing and torque measuring device. The second focusing and torque measuring device adjusts the depth to which the lens is screwed into the lens mount, thereby adjusting the back focus distance of the lens module according to the actual measurement results of the back focus measuring device. In summary, the back focus testing and adjustment equipment provided by this utility model can automatically measure the back focus distance and locking torque of the lens module, and adjust the back focus distance of the lens module according to the actual measurement results of the back focus measuring device, thereby improving the pass rate and production efficiency of the lens module. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of the back focus testing and adjustment device provided by this utility model;

[0044] Figure 2 This is a top view of the back focus testing and adjustment device provided by this utility model;

[0045] Figure 3 This is a schematic diagram of the structure of the back focus measuring device provided by this utility model;

[0046] Figure 4 This is a schematic diagram of the structure of the first focusing and torque measuring device provided by this utility model;

[0047] Figure 5 This is a schematic diagram of the structure of the first torque gripper provided by this utility model;

[0048] Figure 6 This is a schematic diagram of the structure of the second focusing and torque measuring device provided by this utility model;

[0049] Figure 7 This is a schematic diagram of the structure of the debugging and transfer device provided by this utility model.

[0050] In the picture:

[0051] 2001. Back focus adjustment base plate; 2002. Light-blocking plate;

[0052] 2100. Back focus measuring device; 2110. Back focus camera mechanism; 2111. Back focus camera frame; 2120. Back focus imaging mechanism; 2121. Back focus test stand; 2130. Test pressing mechanism; 2131. Pressing drive component; 2132. Pressing rod; 2133. Pressing clearance notch; 2134. Buffer spring; 2135. Buffer shaft;

[0053] 2200, First focusing and torque measuring device; 2210, First focusing and torque measuring seat; 2201, First focusing and torque measuring frame; 2220, First torque gripper; 2221, First torque three-jaw finger cylinder; 2222, First torque clamp; 2223, First support seat; 2230, First torque rotary motor; 2231, First weight block; 2240, First torque lifting mechanism; 2241, First torque lifting slide plate; 2242, First torque lifting slide rail;

[0054] 2300, Second focusing and torque measuring device; 2310, Second focusing and torque measuring seat; 2301, Second focusing and torque measuring frame; 2320, Second torque gripper; 2330, Second torque rotary motor; 2331, Second weight block; 2340, Second torque lifting mechanism; 2341, Second torque lifting slide plate; 2342, Second torque lifting slide rail;

[0055] 2400. Debug the transfer device; 2410. Debug the translation linear module; 2411. Debug the translation slide rail; 2412. Debug the translation slider; 2420. Debug the transport base; 2431. Debug the lifting drive; 2432. Debug the lifting plate; 2433. Hydraulic buffer seat; 2434. Hydraulic buffer; 2441. Debug the telescopic drive; 2442. Debug the telescopic plate; 2450. Debug the gripper;

[0056] 2500, Back focus test transition seat. Detailed Implementation

[0057] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0058] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0059] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0061] This embodiment provides a back focus testing and adjustment device for automatically measuring the back focus distance of a lens module, the locking torque between the lens and the lens mount, and adjusting the depth to which the lens is screwed into the lens mount.

[0062] like Figures 1-7As shown, the back focus testing and adjustment equipment includes a back focus adjustment base plate 2001 and a back focus measuring device 2100, a first focusing torque measuring device 2200, a second focusing torque measuring device 2300, and an adjustment transfer device 2400 mounted thereon. The back focus measuring device 2100 measures the back focus distance of the lens module. The first focusing torque measuring device 2200 and the second focusing torque measuring device 2300 are sequentially positioned downstream of the back focus measuring device 2100 along a horizontal second direction. The first focusing torque measuring device 2200 measures whether the torque between the lens and the lens mount is within a preset specification. The second focusing torque measuring device 2300 adjusts the depth to which the lens is screwed into the lens mount to adjust the back focus distance of the lens module. The adjustment transfer device 2400 includes an adjustment translation mechanism and an adjustment clamping mechanism. The adjustment clamping mechanism clamps the lens module, and the actuator of the adjustment translation mechanism is connected to the adjustment clamping mechanism to drive the adjustment clamping mechanism to translate along the second direction. The second direction is the Y-direction in the figure.

[0063] Specifically, the back focus testing and adjustment equipment provided in this embodiment first measures the back focus distance of the lens module using a back focus measuring device 2100. After measurement, a transfer device 2400 moves the lens module to a first focusing torque measuring device 2200. The first focusing torque measuring device 2200 measures whether the locking torque between the lens and the lens mount of the lens module is within a preset specification, eliminating products with unqualified locking. Then, the transfer device 2400 moves the lens module to a second focusing torque measuring device 2300. The second focusing torque measuring device 2300 adjusts the depth of the lens screwed into the lens mount to adjust the back focus distance of the lens module based on the actual measurement results of the back focus measuring device 2100. In summary, the back focus testing and adjustment equipment provided in this embodiment can automatically measure the back focus distance and locking torque of the lens module and adjust the back focus distance of the lens module based on the actual measurement results of the back focus measuring device 2100, thereby improving the pass rate and production efficiency of the lens module.

[0064] For example, such as Figure 3 As shown, the back focus measurement device 2100 includes a back focus camera mechanism 2110, a back focus imaging mechanism 2120, and a test pressing mechanism 2130.

[0065] The rear focus camera mechanism 2110 includes a rear focus camera frame 2111 and a digital camera (not shown in the figure) mounted on it, with the camera end of the digital camera set vertically downward.

[0066] For example, the back focus imaging mechanism 2120 includes a back focus test base 2121, an imaging lifting assembly (not shown in the figure), and an imaging adjustment assembly (not shown in the figure). The back focus test base 2121 is used to fix the lens module directly below the digital camera. The back focus test base 2121 is provided with a detection through hole that runs vertically through the camera. The imaging adjustment assembly is installed at the output end of the imaging lifting assembly and is located directly below the lens module to be tested. The imaging lifting assembly is used to drive the imaging adjustment assembly to move vertically up and down. The imaging adjustment assembly is used to clamp the imaging plate and adjust the tilt angle of the imaging plate.

[0067] Specifically, the imaging lifting assembly is configured as an electric push rod that can extend and retract in the vertical direction. The imaging lifting assembly is fixed on the back focus camera frame 2111 or the back focus adjustment base plate 2001. The imaging adjustment assembly includes an imaging fixed plate, an imaging movable plate, and an imaging pusher. The upper end of the imaging movable plate protrudes upward into the detection through hole of the back focus test base 2121. The imaging plate is fixed to the upper end of the imaging movable plate. The imaging fixed plate is installed at the lower end of the imaging movable plate. One end of the pusher is connected to the imaging fixed plate, and the other end is connected to the imaging movable plate. The pusher can drive the side of the imaging movable plate connected to the pusher to move in a direction close to or away from the imaging fixed plate to adjust the tilt angle of the imaging movable plate.

[0068] In this embodiment, the imaging pusher includes a first setter screw and a second setter screw. The first setter screw is radially disposed inside the second setter screw, with its inner ring fixed to the imaging fixed plate and its outer ring fixed to the imaging movable plate. Similarly, the inner ring of the second setter screw is fixed to the imaging fixed plate, and its outer ring is fixed to the imaging movable plate. It is understood that when the tilt angle of the imaging fixed plate is adjusted to the same value, the push-out distance of the first setter screw is less than that of the second setter screw. The first setter screw enables coarse adjustment, while the second setter screw enables fine adjustment. The coarse and fine adjustments work together to adjust the parallelism between the imaging plate and the lens, improving the leveling accuracy. Of course, in other embodiments, the imaging pusher can also be configured as a shim. The height and position of the shim can be selectively inserted between the imaging movable plate and the imaging fixed plate, which can also adjust the tilt angle of the imaging movable plate. Optionally, the back-focus imaging mechanism 2120 also includes two positioning posts (not shown in the figure). Two V-shaped grooves (not shown in the figure) are formed on the imaging movable plate. One end of each positioning post is fixed to the imaging fixed plate, and the other end is inserted into the two V-shaped grooves respectively, with the positioning posts abutting against the side walls of the V-shaped grooves. On the one hand, the cooperation between the positioning posts and the V-shaped grooves restricts the movement of the imaging movable plate along the first and second directions; on the other hand, the V-shaped grooves will not interfere with the upward or downward movement of the imaging movable plate, improving reliability. The first direction is the X direction in the figure, and the first direction is perpendicular to the second direction.

[0069] For example, the test pressing mechanism 2130 includes a pressing drive 2131 and a pressing rod 2132. The pressing drive 2131 is mounted on the back focus test base 2121, and the pressing rod 2132 is connected to the execution end of the pressing drive 2131. The pressing drive 2131 is used to drive the pressing rod 2132 to press against the lens mount of the lens module from above.

[0070] For example, such as Figure 3 As shown, the pressure drive 2131 is fixed to the back coke test seat 2121 by a connecting plate. The pressure drive 2131 is a rotary motor or a rotary cylinder.

[0071] For example, such as Figure 3 As shown, the first end of the pressure rod 2132 is connected to the execution end of the pressure drive 2131, and the second end of the pressure rod 2132 is provided with a pressure clearance notch 2133, which is used to avoid the lens element. Specifically, the pressure clearance notch 2133 is set as a semi-circular or U-shaped structure to adapt to cylindrical lenses.

[0072] For example, such as Figure 3 As shown, the second end of the pressure rod 2132 is also provided with a buffer shaft 2135 and a buffer spring 2134. The buffer shaft 2135 passes through the second end of the pressure rod 2132, and the buffer spring 2134 is sleeved on the buffer shaft 2135. The two ends of the buffer spring 2134 are connected to or abut against the second end of the pressure rod 2132 and the buffer shaft 2135, respectively. The pressure rod 2132 presses against the lens mount to be measured through the buffer shaft 2135. Specifically, a limiting boss is provided at one end of the buffer shaft 2135 away from the back focus measurement station, and a pressure boss is provided at the other end. The limiting boss is used to prevent the buffer shaft 2135 from detaching from the pressure rod 2132, and the pressure boss is used to press against the lens mount. The buffer spring 2134 is a compression spring, and its two ends abut against the pressure rod 2132 and the pressure boss, respectively. The lens module is elastically pressed by the buffer shaft 2135 and the buffer spring 2134, which on the one hand avoids damaging the lens module, and on the other hand prevents the lens module from shaking slightly, thereby further improving the accuracy of back focus measurement.

[0073] For example, such as Figure 3 As shown, there are two sets of buffer shaft 2135 and buffer spring 2134, and the two sets of buffer shaft 2135 and buffer spring 2134 are symmetrically arranged on the left and right sides of the pressure relief notch 2133.

[0074] For example, such as Figure 1 and Figure 2As shown, a light-blocking plate 2002 is also installed on the back focus adjustment base plate 2001. The light-blocking plate 2002 is located on the side of the adjustment and transfer device 2400 away from the back focus measuring device 2100. The light-blocking plate 2002 and the two back focus measuring devices 2100 are arranged opposite to each other in the first direction. The light-blocking plate 2002 is used to block external light from entering the digital camera and improve the accuracy of back focus measurement.

[0075] For example, such as Figure 4 and Figure 5 As shown, the first focusing and torque measuring device 2200 includes a first focusing and torque measuring seat 2210, a first rotary clamping mechanism, and a first torque lifting mechanism 2240. The first focusing and torque measuring seat 2210 is used to support the lens module and can measure the torque applied to the lens module. The first rotary clamping mechanism includes a first torque rotary motor 2230 and a first torque gripper 2220. The first torque gripper 2220 is mounted on the actuating end of the first torque rotary motor 2230 and is used to clamp the lens of the lens module. The first torque rotary motor 2230 drives the first torque gripper 2220 to rotate around a vertical axis. The first torque rotary motor 2230 is mounted on the actuating end of the first torque lifting mechanism 2240, which can drive the first torque gripper 2220 downwards to press against the lens of the lens module.

[0076] For example, the first focusing torque measuring base 2210 includes a first torque sensor and a first torque detection plate. The detection end of the first torque sensor is set vertically upward, and the first torque detection plate is installed on the detection end of the first torque sensor. The first torque detection plate is used to support the lens module.

[0077] For example, such as Figure 4 As shown, the first focusing and torque measuring device 2200 also includes a first focusing and torque measuring frame 2201, which is fixed to the rear focus adjustment machine base plate 2001. The first torque lifting mechanism 2240 adopts a linear module, which is fixed to the first focusing and torque measuring frame 2201 in the vertical direction. The first focusing and torque measuring frame 2201 is provided with two first torque lifting slide rails 2242 extending in the vertical direction. The first torque lifting slide rails 2242 are slidably mounted on the first torque lifting slide rails 2242 via sliders. The first torque lifting slide rails 2241 are connected to the execution end of the first torque lifting mechanism 2240. The first torque rotary motor 2230 is installed on the first torque lifting slide rails 2241.

[0078] For example, such as Figure 5As shown, the first torque gripper 2220 includes a first torque three-jaw finger cylinder 2221 and three first torque clamps 2222 respectively installed on its three execution ends. The first torque three-jaw finger cylinder 2221 drives the three first torque clamps 2222 to move closer to each other to clamp the lens module.

[0079] For example, such as Figure 4 and Figure 5 As shown, a first weight-adding block 2231 is installed on the upper end of the first torque rotary motor 2230, and a first support seat 2223 is installed on the lower end of the body of the first torque gripper 2220. The first support seat 2223 can press down against the lens of the lens module. A lens clearance groove is provided in the middle of the lower end of the first support seat 2223 to prevent damage to the lens on the lens.

[0080] Specifically, when measuring the locking torque between the lens and the lens mount, the adjustment and transfer device 2400 first moves the lens module to the corresponding position on the first torque detection plate. The first torque lifting mechanism 2240 drives the first rotating clamping mechanism to move downward, so that the first support seat 2223 presses against the lens from above. Then, after the first torque jaw 2220 clamps the lens, it drives the lens to rotate at a first preset angle. The first torque sensor measures the locking torque between the lens and the lens mount in real time.

[0081] For example, such as Figure 6 As shown, the second focusing and torque measuring device 2300 also includes a second focusing and torque measuring frame 2301, which is fixed to the rear focus adjustment machine base plate 2001. The second torque lifting mechanism 2340 adopts a linear module, which is fixed to the second focusing and torque measuring frame 2301 in the vertical direction. The second focusing and torque measuring frame 2301 is provided with two second torque lifting slide rails 2342 extending in the vertical direction. The second torque lifting slide rails 2342 are slidably mounted on the second torque lifting slide rails 2342 via sliders. The second torque lifting slide rails 2341 are connected to the execution end of the second torque lifting mechanism 2340. The second torque rotary motor 2330 is installed on the second torque lifting slide rails 2341.

[0082] For example, such as Figure 6 As shown, the second torque gripper 2320 includes a second torque three-jaw finger cylinder and three second torque clamps respectively installed on its three actuator ends. The second torque three-jaw finger cylinder drives the three second torque clamps to move closer to each other to clamp the lens module.

[0083] For example, such as Figure 6 As shown, a second weight block 2331 is installed on the upper end of the second torque rotary motor 2330, and a second support is installed on the lower end of the body of the second torque gripper 2320. The second support can press down against the lens of the lens module. A lens clearance groove is provided in the middle of the lower end of the second support to prevent damage to the lens on the lens.

[0084] Specifically, when adjusting the depth of the lens screwed into the lens mount, the adjustment and transfer device 2400 first moves the lens module to the corresponding position on the second torque detection plate. The second torque lifting mechanism 2340 drives the second rotating clamping mechanism to move downward, so that the second support seat presses against the lens from above. Then, after the second torque jaw 2320 clamps the lens, it drives the lens to rotate at the corresponding angle according to the measurement result of the back focus measuring device 2100. At the same time, the second torque sensor measures the torque between the lens and the lens mount in real time to avoid exceeding the upper limit and damaging the lens module. This completes the adjustment of the back focus distance of the lens module.

[0085] For example, such as Figure 7 As shown, the debugging clamping mechanism includes a debugging transport base 2420, and the debugging translation mechanism includes a debugging translation linear module 2410, a debugging translation slide rail 2411, and two debugging translation sliders 2412. The execution end of the debugging translation linear module 2410 is connected to the debugging transport base 2420, which can drive the debugging transport base 2420 to move along the second direction. The debugging translation slide rail 2411 extends along the second direction and is arranged side by side with the debugging translation linear module 2410. The two debugging translation sliders 2412 are both slidably mounted on the debugging translation slide rail 2411 along the second direction, and the debugging transport base 2420 is mounted on the two debugging translation sliders 2412.

[0086] Furthermore, such as Figure 7 As shown, the debugging clamping mechanism also includes a debugging lifting assembly and a debugging telescopic assembly. The debugging lifting assembly includes a debugging lifting drive 2431 and a debugging lifting plate 2432. The debugging lifting drive 2431 adopts a linear cylinder or an electric actuator, and its two ends are respectively connected to the debugging transport base 2420 and the debugging lifting plate 2432. The debugging telescopic assembly includes a debugging telescopic drive 2441 and a debugging telescopic plate 2442. The debugging telescopic drive 2441 adopts a linear cylinder, and its two ends are respectively connected to the debugging lifting plate 2432 and the debugging telescopic plate 2442. The debugging telescopic drive 2441 is used to drive the debugging telescopic plate 2442 to move along a first direction to approach or move away from the back focus measurement station or the focus and torque measurement station. The debugging gripper 2450 is installed on the debugging telescopic plate 2442 and is used to clamp the lens module. The debugging gripper 2450 consists of a pneumatic finger and a clamping fixture installed at its two execution ends.

[0087] For example, such as Figure 7As shown, two hydraulic buffer seats 2433 are fixed on the adjustment lifting plate 2432, and two vertically upward hydraulic buffers 2434 are correspondingly provided on the adjustment transport base 2420. The two hydraulic buffers 2434 are inserted through the adjustment lifting plate 2432. When the adjustment lifting drive component 2431 drives the adjustment lifting plate 2432 to descend to the limit position, the two hydraulic buffer seats 2433 can respectively press against the two hydraulic buffers 2434, thereby limiting the lowest position that the adjustment gripper 2450 and the lens module it holds can reach.

[0088] For example, such as Figures 1-3 As shown, two back focus measuring devices 2100 are arranged at intervals along the second direction. The back focus test and adjustment equipment can simultaneously measure the back focus distance of two lens modules, thereby improving production efficiency.

[0089] For example, such as Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, two first focusing torque measuring seats 2210 and two first rotating clamping mechanisms are each spaced apart along the second direction. Similarly, two second focusing torque measuring seats 2310 and two second rotating clamping mechanisms are also spaced apart along the second direction. The back focus testing and adjustment equipment can simultaneously measure the torque of two lens modules and adjust the lens screw-in depth of both modules, improving production efficiency.

[0090] For example, such as Figure 7 As shown, two debugging grippers 2450 are installed on the debugging telescopic plate 2442. The two debugging grippers 2450 are installed at intervals along the second direction on the debugging telescopic plate 2442, so that the debugging clamping mechanism can simultaneously clamp two lens modules located at the back focus measurement station or the focus and torque measurement station, and simultaneously move them to the downstream station under the drive of the debugging translation mechanism, thereby improving the transfer efficiency.

[0091] For example, such as Figure 7 As shown, there are two adjustment telescopic components. The two adjustment telescopic components are installed at intervals along the second direction on the adjustment lifting plate 2432, so that the adjustment clamping mechanism can simultaneously clamp two lens modules located at the back focus measurement station and two lens modules located at the focus and torque measurement station, and simultaneously move them to the downstream station under the drive of the adjustment translation mechanism, thereby improving the transfer efficiency.

[0092] For example, such as Figure 1 and Figure 2 As shown, two back focus test transition seats 2500 are also installed on the back focus adjustment machine base plate 2001 to receive the lens modules unloaded from the second focus adjustment and torque measurement device 2300, providing a transition function for the lens modules to be sent to the subsequent workstations to perform the next process.

[0093] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A back focus test adjustment apparatus characterized by, The rear focus adjustment machine base plate (2001) and the rear focus measuring device (2100) arranged thereon, The rear focus measuring device (2100) is used for measuring the rear focus distance of the lens module; The first focus measuring torque device (2200) is arranged at a downstream position of the rear focus measuring device (2100) along a horizontal second direction, and is used for measuring whether the torque between the lens and the lens seat is within a preset specification; The second focus measuring torque device (2300) is arranged at a downstream position of the first focus measuring torque device (2200) along the second direction, and is used for adjusting the depth of the lens rotating into the lens seat to adjust the rear focus distance of the lens module; The adjustment transfer device (2400) comprises an adjustment translation mechanism and an adjustment clamping mechanism, the adjustment clamping mechanism is used for clamping the lens module, and the execution end of the adjustment translation mechanism is connected with the adjustment clamping mechanism to drive the adjustment clamping mechanism to translate along the second direction.

2. The back focus test adjustment apparatus of claim 1, wherein, The rear focus measuring device (2100) comprises: The rear focus camera mechanism (2110) comprises a rear focus camera frame (2111) and a digital camera arranged on the rear focus camera frame (2111); The rear focus imaging mechanism (2120) comprises a rear focus test seat (2121), an imaging lifting assembly and an imaging adjusting assembly, the rear focus test seat (2121) is used for fixing the lens module directly below the digital camera, the imaging adjusting assembly is arranged at the output end of the imaging lifting assembly, and the imaging adjusting assembly is arranged directly below the lens module to be measured, the imaging lifting assembly is used for driving the imaging adjusting assembly to vertically lift, the imaging adjusting assembly is used for clamping an imaging plate and adjusting the inclination angle of the imaging plate; The test pressing mechanism (2130) comprises a pressing driving element (2131) and a pressing rod (2132), the pressing driving element (2131) is arranged on the rear focus test seat (2121), and the pressing rod (2132) is connected with the execution end of the pressing driving element (2131), the pressing driving element (2131) is used for driving the pressing rod (2132) to press against the lens seat of the lens module from above.

3. The back focus test adjustment apparatus of claim 2, wherein, The first end of the pressing rod (2132) is connected with the execution end of the pressing driving element (2131), the second end of the pressing rod (2132) is provided with a pressing accommodation notch (2133), and the pressing accommodation notch (2133) is used for avoiding the lens of the lens module; The second end of the pressing rod (2132) is further provided with a buffer shaft rod (2135) and a buffer spring (2134), the buffer shaft rod (2135) is arranged at the second end of the pressing rod (2132), the buffer spring (2134) is sleeved on the buffer shaft rod (2135), and the two ends of the buffer spring (2134) are respectively connected with or abut against the second end of the pressing rod (2132) and the buffer shaft rod (2135), and the pressing rod (2132) presses against the lens of the lens module through the buffer shaft rod (2135).

4. The back focus test adjustment apparatus of claim 2, wherein, The first focus measuring torque device (2200) comprises: The first focusing torque measuring seat (2210) is used for bearing the lens module, and the first focusing torque measuring seat (2210) can measure the torque borne by the lens module thereon; The first rotating clamping mechanism comprises a first torque rotating motor (2230) and a first torque clamping jaw (2220), the first torque clamping jaw (2220) is installed at the execution end of the first torque rotating motor (2230), the first torque clamping jaw (2220) is used for clamping the lens of the lens module, and the first torque rotating motor (2230) is used for driving the first torque clamping jaw (2220) to rotate around the vertical axis; The first torque lifting mechanism (2240), the first torque rotating motor (2230) is installed at the execution end of the first torque lifting mechanism (2240), and the first torque lifting mechanism (2240) can drive the first torque clamping jaw (2220) to approach and press against the lens of the lens module.

5. The back focus test adjustment apparatus of claim 4, wherein, The second focusing torque measuring seat (2310) is used for bearing the lens module, and the second focusing torque measuring seat (2310) can measure the torque borne by the lens module thereon; The second rotating clamping mechanism comprises a second torque rotating motor (2330) and a second torque clamping jaw (2320), the second torque clamping jaw (2320) is installed at the execution end of the second torque rotating motor (2330), the second torque clamping jaw (2320) is used for clamping the lens of the lens module, and the second torque rotating motor (2330) is used for driving the second torque clamping jaw (2320) to rotate around the vertical axis; The second torque lifting mechanism (2340), the second torque rotating motor (2330) is installed at the execution end of the second torque lifting mechanism (2340), and the second torque lifting mechanism (2340) can drive the first torque clamping jaw (2220) to approach and press against the lens of the lens module. The upper end of the first torque rotating motor (2230) is provided with a first weight block (2231), the lower end of the body of the first torque clamping jaw (2220) is provided with a first bearing seat (2223), and the first bearing seat (2223) can press downward against the lens of the lens module; and / or 6. The back focus test adjustment apparatus of claim 5, wherein, The upper end of the second torque rotating motor (2330) is provided with a second weight block (2331), the lower end of the body of the second torque clamping jaw (2320) is provided with a second bearing seat, and the second bearing seat can press downward against the lens of the lens module. The rear focus measuring device (2100) is arranged at intervals along the second direction; 7. The back focus test adjustment apparatus of claim 5, wherein, The first focusing torque measuring seat (2210) and the first rotating clamping mechanism are arranged at intervals along the second direction; The second focusing torque measuring seat (2310) and the second rotating clamping mechanism are arranged at intervals along the second direction. The debugging clamping mechanism comprises:

8. The back focus test adjustment apparatus of claim 1, wherein, A debugging transportation base (2420) is installed at the execution end of the debugging translation mechanism; ​ The debugging lifting assembly comprises a debugging lifting driving member (2431) and a debugging lifting plate (2432), two ends of the debugging lifting driving member (2431) are connected with the debugging transportation base (2420) and the debugging lifting plate (2432) respectively; The debugging telescopic assembly comprises a debugging telescopic driving member (2441) and a debugging telescopic plate (2442), two ends of the debugging telescopic driving member (2441) are connected with the debugging lifting plate (2432) and the debugging telescopic plate (2442) respectively, and the debugging telescopic driving member (2441) is used for driving the debugging telescopic plate (2442) to move along a horizontal first direction to approach or move away from the back focus measurement station or the focus measurement torque station; The debugging clamping jaw (2450) is installed on the debugging telescopic plate (2442) and is used for clamping the lens module.

9. The back focus test adjustment apparatus of claim 8, wherein, The debugging telescopic assembly is provided with two debugging telescopic assemblies, and the two debugging telescopic assemblies are installed on the debugging lifting plate (2432) in the second direction; and / or Two debugging clamping jaws (2450) are installed on the debugging telescopic plate (2442), and the two debugging clamping jaws (2450) are installed on the debugging telescopic plate (2442) in the second direction.

10. The back focus test adjustment apparatus of claim 8, wherein, The debugging translation mechanism comprises: The debugging translation linear module (2410) is connected with the debugging transportation base (2420) at an execution end and can drive the debugging transportation base (2420) to move in the second direction; The debugging translation sliding rail (2411) extends in the second direction and is arranged side by side with the debugging translation linear module (2410); Two debugging translation sliding blocks (2412) are slidably arranged on the debugging translation sliding rail (2411) in the second direction, and the debugging transportation base (2420) is installed on the two debugging translation sliding blocks (2412).

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