A camera module aa device

Abstract

The application discloses a camera module AA device, which comprises a base, a rotating seat embedded in the mounting groove, a ring-shaped rotating disc horizontally arranged on the upper end surface of the rotating seat, a rotating handle arranged on the outer periphery of the rotating disc, and an adjusting hole arranged on the rotating disc; and a positioning mechanism, which comprises a rear seat fixing block, a centering translation block, a P plate fixing block and a springing pressing block. The mechanical mechanism for converting the rotating motion into the linear motion is realized in a small space range.

Description

A camera module AA device Technical Field

[0001] This invention relates to the field of camera active alignment tooling technology, and in particular to a camera module AA device. Background Technology

[0002] AA (Active Alignment) is used to ensure the relative positions of components during assembly. In the camera module packaging process, multiple assembly steps are required, and the cumulative errors from each assembly lead to a growing number of product problems. Traditional threaded lens assembly cannot adjust for these errors, potentially resulting in images that are off-center or have varying degrees of sharpness in different areas.

[0003] During assembly in AA equipment, the relative positions of the lens and CMOS image sensor are freely adjustable. By acquiring and analyzing imaging data in real time, not only the relative height of the lens and sensor can be adjusted, but also the horizontal position and the tilt angle of the lens. This ensures that the entire image is clear, and that the focal point of the optical axis and the image plane is centered in the image.

[0004] Camera active alignment (AA) equipment is the core equipment that ensures the precise assembly of the lens and image sensor, and is an important piece of equipment required for the assembly of image sensor modules. With the rapid increase in the penetration rate of autonomous driving systems in my country's automotive industry, the demand for automotive image sensor modules such as automotive cameras, millimeter-wave radar, and lidar has risen sharply, and automotive camera AA equipment, as an upstream component of the industry chain, has also experienced significant growth.

[0005] The current technology that uses an integrated lens structure (lens and fixture as a single unit) for active alignment onto the P-plate has the following drawbacks:

[0006] 1. The integrated lens is larger than the P board, so the product cannot be pressed using a conventional flip-pressing mechanism; otherwise, the product cannot be removed after AA (anti-reflection).

[0007] 2. Due to the limitations of equipment space dimensions and control, it is difficult to add additional electric or pneumatic power to this device;

[0008] 3. The product is small but has many components, which requires high standards for protecting the components and for operators to be proficient in coaxial insertion. Summary of the Invention

[0009] To address the above problems, this invention provides a camera module AA device, which is implemented as follows:

[0010] A camera module AA device includes:

[0011] The base has a mounting groove and an alignment hole. An assembly table for placing a camera is also provided on the side of the mounting groove on the base.

[0012] A rotating mechanism includes a rotating seat embedded in the mounting groove, a fixing hole in the middle of the rotating seat, a pair of coaxial sliding grooves symmetrically formed on the rotating seat, an annular turntable horizontally rotatably mounted on the upper surface of the rotating seat, a rotating handle on the outer periphery of the turntable, and an adjustment hole at a 30-50° angle to the radial direction at a position corresponding to the sliding groove on the turntable.

[0013] Alignment mechanism, the alignment mechanism comprising:

[0014] The rear seat fixing block is adapted to be embedded in the rotating seat with the fixing hole. A step is provided in the middle of the rear seat fixing block. An assembly hole is opened at the corresponding position of the step and the fixing hole. Guide slopes are respectively opened on the outer wall of the rear seat fixing block and the two slides on the same side.

[0015] The centering and translating block includes a movable part horizontally disposed in the slide groove, one end of the movable part near the rear seat fixing block is vertically folded upward to form a guide part, an adjustment part adapted to the guide inclined surface is provided on the side surface of the guide part near the rear seat fixing block, and an adjustment rod adapted to the adjustment hole is provided on the movable part extending upward.

[0016] The P-plate fixing block is placed on the upper surface of the rear seat fixing block, and a lifting spring is provided between the P-plate fixing block and the rear seat fixing block. The P-plate fixing block is provided with a receiving hole for accommodating the lens P-plate.

[0017] A spring-loaded pressure block is provided on the upper surface of the guide portion near the rear seat fixing block by means of a clamping spring, and the spring-loaded pressure block extends in the direction of approaching the rear seat fixing block to form a clamping portion that can clamp the lens P plate.

[0018] Preferably, the adjustment hole is an arc-shaped elongated oval hole.

[0019] As a further improvement, the rotating base is a square base adapted to the mounting groove, and the upper surface of the rotating base is provided with at least four limiting platforms, and each limiting platform has a circular guide surface of the same arc on its inner side surface.

[0020] As a further improvement, a plurality of guide holes are provided in the mounting groove at the periphery of the alignment hole and at a position not exceeding the projection of the fixing hole onto the upper surface of the mounting groove. A guide sleeve is embedded in the guide hole, and a guide rod is movably disposed in the guide sleeve. The guide rod passes through the rear seat fixing block and at least partially extends out of the upper surface of the rear seat fixing block. A lifting groove adapted to the guide rod is provided on the lower surface of the P plate fixing block, and at least part of the portion of the guide rod extending out of the rear seat fixing block is accommodated in the lifting groove.

[0021] As a further improvement, the lifting spring is wound around the outer periphery of the guide rod.

[0022] As a further improvement, the upper end of the guide is provided with a positioning hole, and the side surface of the spring-loaded pressure block near the centering translation block is provided with a positioning block that matches the positioning hole.

[0023] As a further improvement, the lens cap is placed on the stepped part of the rear mounting block.

[0024] As a further improvement, a part-retrieving port is provided on the side wall of the assembly table away from the mounting slot. After the robotic arm reaches into the assembly table through the part-retrieving port, it moves upward to take out the camera and place it on the lens P plate that has been properly aligned for active alignment.

[0025] The beneficial effects of this invention are as follows:

[0026] 1. Through the rotation mechanism and the alignment mechanism, the large-amplitude rotational motion is converted into a small-distance, high-precision linear motion, so that the centering translation block centers the position of the P-board fixing block, the P-board fixing block limits the position of the P-board, and the spring-loaded pressure block presses the P-board tightly, thus realizing the positioning of the P-board. Then, the robot arm operates to perform the insertion and camera assembly. The AA process can be completed without adding a new drive mechanism, ensuring the assembly of the integrated lens in a small space.

[0027] 2. After the position is adjusted by the rotating mechanism and the alignment mechanism, the insertion can be completed without the need for additional work by the staff. Attached Figure Description

[0028] Figure 1 is a schematic diagram of the overall structure of the present invention under assembly.

[0029] Figure 2 is a schematic diagram of the overall structure of the invention in an explosion-proof configuration.

[0030] Figure 3 is a schematic diagram of the overall structure of the base of the present invention.

[0031] Figure 4 is a schematic diagram of the overall structure of the rotary seat of the present invention.

[0032] Figure 5 is a schematic diagram of the overall structure of the turntable of the present invention.

[0033] Figure 6 is a schematic diagram of the overall structure of the P-plate fixing block of the present invention.

[0034] Figure 7 is a schematic diagram of the overall structure of the rear seat fixing block of the present invention.

[0035] Figure 8 is a schematic diagram of the overall structure of the centering translation block of the present invention.

[0036] Figure 9 is a schematic diagram of the overall structure of the spring-loaded pressure block of the present invention. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0038] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0039] A camera module AA device includes:

[0040] The base 1 has a mounting groove 12 and an alignment hole 13. The mounting groove 12 is also provided with an assembly table 11 for placing the camera 41 on the side of the mounting groove 12.

[0041] The rotating mechanism 2 includes a rotating seat 21 embedded in the mounting groove 12. A fixing hole 211 is opened in the middle of the rotating seat 21. A pair of coaxial sliding grooves 212 are symmetrically opened on the rotating seat 21. An annular turntable 22 is horizontally rotatably arranged on the upper surface of the rotating seat 21. A rotating handle 222 is arranged on the outer periphery of the turntable 22. An adjustment hole 221 is opened on the turntable 22 at an angle of 30~50° with the radial direction at a position corresponding to the sliding groove 212.

[0042] Alignment mechanism 3, the alignment mechanism 3 comprising:

[0043] The rear seat fixing block 31 is adapted to be embedded in the rotating seat 21 with the fixing hole 211. The rear seat fixing block 31 has a stepped part 311 in the middle. The stepped part 311 and the fixing hole 211 are respectively provided with assembly holes 312 at the corresponding positions. The outer wall of the rear seat fixing block 31 and the two sliding grooves 212 on the same side are respectively provided with guide slopes 313.

[0044] The centering and translation block 32 includes a moving part 321 horizontally disposed in the slide groove 212. One end of the moving part 321 near the rear seat fixing block 31 is vertically folded upward to form a guide part 322. An adjustment part 323 adapted to the guide inclined surface 313 is provided on the side surface of the guide part 322 near the rear seat fixing block 31. An adjustment rod 325 adapted to the adjustment hole 221 extends upward from the moving part 321.

[0045] P-plate fixing block 34, the P-plate fixing block 34 is placed on the upper surface of the rear seat fixing block 31, and a lifting spring 316 is provided between the P-plate fixing block 34 and the rear seat fixing block 31. The P-plate fixing block 34 is provided with a receiving hole 341 for accommodating the lens P-plate 42.

[0046] A spring-loaded pressure block 33 is provided on the upper surface of the guide portion 322 near the rear seat fixing block 31 by a clamping spring 332, and the spring-loaded pressure block 33 extends in the direction near the rear seat fixing block 31 to form a clamping portion 331 that can clamp the lens P plate 42.

[0047] If the radial angle between the guide hole 14 and the turntable 22 is too large, the centering translation block 32 will move a long distance when the turntable 22 rotates at a small angle, which does not meet the requirements for precision assembly. If the radial angle between the adjustment holes 221 and the turntable 22 is too small, the turntable 22 needs to rotate at a large angle during AA, which does not meet the design requirements for small spaces. Preferably, the radial angle between the adjustment holes 221 and the turntable 22 is 45°.

[0048] Preferably, the adjustment hole 221 is an arc-shaped elongated oval hole.

[0049] Preferably, the tilt angle of the adjusting part 323 and the guide slope 313 is 25~50°.

[0050] As a further improvement, the rotating seat 21 is a square base 1 adapted to the mounting groove 12. The upper surface of the rotating seat 21 is provided with at least four limiting platforms 213, and each limiting platform 213 has a circular guide surface of the same arc on its inner side surface.

[0051] As a further improvement, the mounting groove 12 is provided with a plurality of guide holes 14 at the periphery of the alignment hole 13 and at the position of the fixed hole 211 projected onto the upper surface of the mounting groove 12. A guide sleeve 314 is embedded in the guide hole 14, and a guide rod 315 is movably disposed in the guide sleeve 314. The guide rod 315 passes through the rear seat fixing block 31 and at least partially extends out of the upper surface of the rear seat fixing block 31. A lifting groove adapted to the guide rod 315 is provided on the lower surface of the P plate fixing block 34. At least part of the portion of the guide rod 315 extending out of the rear seat fixing block 31 is accommodated in the lifting groove.

[0052] As a further improvement, the lifting spring 316 is wound around the outer periphery of the guide rod 315.

[0053] As a further improvement, the upper end of the guide portion 322 is provided with a positioning hole 324, and the side surface of the spring-loaded pressure block 33 near the centering translation block 32 is provided with a positioning block 333 that is adapted to the positioning hole 324.

[0054] As a further improvement, the lens rear cover 43 is placed on the stepped portion 311 of the rear seat fixing block 31.

[0055] As a further improvement, a part-removal port is provided on the side wall of the assembly table 11 away from the mounting groove 12. The robot arm extends into the assembly table 11 through the part-removal port and moves upward to remove the camera 41 and place it on the lens P plate 42 that has been inserted for active alignment.

[0056] As a further improvement, the outer periphery of the turntable 22 extends outward to form a protrusion, and a limit block is provided on the limiting platform 213 of the rotating seat 21. The protrusion will be blocked by the limit block to prevent the lens P plate 42 from being damaged due to improper operation by the operator.

[0057] Working principle:

[0058] The lens P-plate 42 is manually placed into the receiving hole 341 of the P-plate fixing block 34 by the staff, and the lens rear cover 43 is placed in the rear seat fixing block 31. The rotating handle 222 of the turntable 22 is rotated, and the adjusting rod 325 on the centering translation block 32 moves horizontally with the rotation of the guide hole 14. The spring-loaded pressure block 33 moves towards the centering translation block 32 as it moves. Subsequently, the rear seat fixing block 31 is lifted upwards by the adjusting part 323 of the centering translation block 32, thereby driving the lens P-plate 42 upwards. This ensures that the lifting height of the P-plate within the tolerance thickness is consistent, while also ensuring accuracy during AA (alignment adjustment). As the turntable 22 continues to move, the spring-loaded pressure block 33 is limited and stationary by the lens P-plate 42. Through the compression of the lifting spring 316, the remaining parts continue to lift, achieving automatic insertion and power connection between the lens P-plate 42 and the lens rear cover 43. After completion, the robotic arm removes the camera 41 for alignment with the lens P-plate 42. Once completed, the P-plate fixing block 34 can be removed to take out the product.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A camera module AA device, characterized in that, include: The base has a mounting groove with an alignment hole, and an assembly table for placing a camera is provided on the side of the mounting groove. The rotating mechanism includes a rotating seat embedded in the mounting groove, a fixing hole in the middle of the rotating seat, a pair of coaxial sliding grooves symmetrically provided on the rotating seat, an annular turntable horizontally rotatable on the upper surface of the rotating seat, a rotating handle on the outer periphery of the turntable, and an adjustment hole at a 30-50° angle to the radial direction at a position corresponding to the sliding groove on the turntable. Alignment mechanism, comprising: a rear seat fixing block, which is adapted to be embedded in the rotating seat and fitted with the fixing hole; a stepped portion is provided in the middle of the rear seat fixing block; assembly holes are provided at corresponding positions of the stepped portion and the fixing hole; guide slopes are respectively provided on the outer wall of the rear seat fixing block and the two slides on the same side; and a centering translation block, which includes a moving part horizontally disposed in the slide, the end of the moving part near the rear seat fixing block being vertically folded upward to form a guide part; the surface of the guide part near the rear seat fixing block being provided with a surface that corresponds to the... An adjustment part adapted to the guide slope, wherein an adjustment rod adapted to the adjustment hole extends upward on the moving part; a P-plate fixing block, wherein the P-plate fixing block is placed on the upper surface of the rear seat fixing block, and a lifting spring is provided between the P-plate fixing block and the rear seat fixing block, and the P-plate fixing block is provided with a receiving hole for accommodating the lens P-plate; a spring-loaded pressure block, wherein the spring-loaded pressure block is disposed on the upper surface of the guide part near the rear seat fixing block by means of a clamping spring, and the spring-loaded pressure block extends in the direction close to the rear seat fixing block to form a clamping part for clamping the lens P-plate.

2. The camera module AA device as described in claim 1, characterized in that, The adjustment hole is an arc-shaped oblong hole.

3. The camera module AA device as described in claim 1, characterized in that, The rotating base is a square base adapted to the mounting slot. The upper surface of the rotating base is provided with at least four limiting platforms. Each limiting platform has a circular guide surface of the same arc on its inner side surface.

4. The camera module AA device as described in claim 1, characterized in that, A plurality of guide holes are provided in the mounting groove at the periphery of the alignment hole and at a position not exceeding the projection of the fixing hole on the upper surface of the mounting groove. A guide sleeve is embedded in the guide hole, and a guide rod is movably disposed in the guide sleeve. The guide rod passes through the rear seat fixing block and at least partially extends out of the upper surface of the rear seat fixing block. A lifting groove adapted to the guide rod is provided on the lower surface of the P plate fixing block, and at least part of the portion of the guide rod extending out of the rear seat fixing block is accommodated in the lifting groove.

5. The camera module AA device as described in claim 4, characterized in that, The lifting spring is wound around the outer periphery of the guide rod.

6. The camera module AA device as described in claim 1, characterized in that, The upper end of the guide is provided with a positioning hole, and the side surface of the spring-loaded pressure block near the centering translation block is provided with a positioning block that matches the positioning hole.

7. The camera module AA device as described in claim 1, characterized in that, The lens cap is placed on the stepped part of the rear mounting block.

8. The camera module AA device as described in claim 1, characterized in that, The assembly table has a part-retrieving port on the side wall away from the mounting slot. The robotic arm extends into the assembly table through the part-retrieving port and moves upward to take out the camera and place it on the lens P plate that has been properly aligned for active alignment.

Images