High-precision lens group core adjusting device

Abstract

The utility model provides a high-precision lens group core adjusting device, which relates to the technical field of lens core adjusting, and comprises a conveying mechanism and a detection lens group, the conveying mechanism comprises a fixing tool used for bearing a lens and a first linear screw rod module used for driving the fixing tool to move, the first linear screw rod module is used for transferring the fixing tool to the detection lens group so as to detect the lens; the detection lens group comprises a bottom plate, the bottom plate is horizontally and slidably connected with a transverse plate, the transverse plate is fixedly connected with a vertical plate, and the vertical plate is slidably connected with a mounting plate in a lifting manner; 6-8 support arms are annularly and uniformly distributed on the mounting plate along the center, and the included angle between every two adjacent support arms is 45-60 degrees; the plurality of support arms extend towards the station direction of the sliding table in an arc shape, and the arc curvature radius of the support arms is 140-160mm; and each support arm is provided with a detection camera mechanism. The utility model has the beneficial effects that the flexible adjustment of the detection camera at multiple positions can be realized during core adjustment, and the requirements of core adjustment of different lenses can be better met.

Description

Technical Field

[0001] This utility model relates to the field of lens alignment technology, and in particular to a high-precision lens group alignment device. Background Technology

[0002] In today's era of rapid technological development, optical lenses, as a key precision optical component, are widely used in many imaging fields such as automotive, security, intelligent manufacturing, photography and videography, and medical equipment. The quality of their imaging directly affects the performance and application effect of related equipment and systems.

[0003] Lens image quality is a comprehensive indicator influenced by various factors, among which coaxiality plays a crucial role. Coaxiality refers to the degree of coincidence between the lens's central optical axis and the lens surface normal. Poor lens coaxiality can lead to a series of serious problems. For example, light cannot travel along an ideal path when passing through the lens, resulting in blurring, distortion, and chromatic aberration, significantly reducing image sharpness, contrast, and color reproduction. In applications with extremely high image quality requirements, such as high-end security monitoring that needs to clearly identify the features of distant targets, and medical imaging diagnosis that needs to accurately observe the fine structures of internal human tissues, even a slight coaxiality deviation can have serious consequences, affecting the accuracy of monitoring and the reliability of diagnosis.

[0004] In lens alignment equipment, the inspection camera plays a crucial role. Using high-precision imaging technology, it captures the positional information of the lens module or optical components in real time, ensuring the lens center is aligned with the optical axis. In lens alignment equipment, the inspection camera typically has a certain degree of position adjustment capability to ensure accurate capture of the lens module's positional information and optical performance. However, currently, many alignment equipment inspection cameras cannot meet the needs of multiple position adjustments, resulting in some critical positions of the lens module not being detected, thus affecting alignment accuracy and consistency.

[0005] In conclusion, developing a lens alignment device that is more conducive to camera adjustment has become an urgent task and has extremely important practical significance. It will effectively solve the pain points of existing alignment devices in camera adjustment and promote the development of the lens inspection industry. Utility Model Content

[0006] This invention overcomes the shortcomings of the prior art and provides a high-precision lens group alignment device that can flexibly adjust the detection camera in multiple positions and better adapt to the alignment needs of different lenses.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] A high-precision lens group alignment device includes a conveying mechanism and a testing lens group. The conveying mechanism includes a fixing fixture for carrying the lens and a first linear screw module for driving the fixing fixture to move. The first linear screw module is used to move the fixing fixture to the testing lens group for lens testing. The testing lens group includes a base plate, a horizontal plate slidably connected to the base plate, a vertical plate fixedly connected to the horizontal plate, and a mounting plate slidably connected to the vertical plate. Six to eight support arms are evenly distributed in a ring around the center of the mounting plate, with an included angle of 45 to 60° between adjacent support arms. The support arm extends in an arc shape towards the sliding table position, with a radius of curvature of 140-160mm. Each support arm is equipped with a detection camera mechanism, which includes a first connecting plate, a second connecting plate, and a detection camera, with the detection camera fixed to the second connecting plate. A first guide groove is formed along the length of the support arm, and a second guide groove is formed along the length of the first connecting plate. The first connecting plate is slidably connected to the first guide groove, and the second connecting plate is slidably connected to the second guide groove. A scale is provided on the support arm next to the first guide groove.

[0009] Furthermore, a second linear screw module is provided on the base plate, and the output end of the second linear screw module is connected to the horizontal plate; a guide rail is provided on the base plate, and a slider is correspondingly provided on the horizontal plate, and the horizontal plate is connected to the base plate through the sliding cooperation of the slider and the guide rail.

[0010] Furthermore, a third linear screw module is provided on the upright plate, and the output end of the third linear screw module is connected to the mounting plate.

[0011] Furthermore, it also includes a first screw knob and a second screw knob, the first screw knob passing through the first guide groove and forming a threaded connection with the first connecting plate, and the second screw knob passing through the second guide groove and forming a threaded connection with the second connecting plate.

[0012] Furthermore, the mounting plate is provided with a central plate, a third connecting plate is provided on the central plate, and a detection camera is provided on the third connecting plate; it also includes a third screw knob, which passes through the third connecting plate and is connected to the central plate.

[0013] Furthermore, it also includes a housing, one side of which has an inlet / outlet, with the end of the first linear screw module extending out and exposed in the inlet / outlet.

[0014] Furthermore, the housing is equipped with a side door, the position of which corresponds to the detection mirror assembly; the side door is connected to the housing via a hinge, the hinge's rotation angle range being 0 to 150°.

[0015] Furthermore, the housing is equipped with a mounting rod, and a control unit is connected to the mounting rod via a rotating joint; the rotation angle range of the rotating joint is 0 to 360°, which can realize the all-round adjustment of the control unit.

[0016] Furthermore, the bottom of the box is equipped with four height-adjustable support feet and four casters arranged in a rectangular pattern.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention allows for flexible adjustment of the first, second, and third connecting plates by using a first screw knob, a second screw knob, and a third screw knob to adjust the positions of the camera in multiple positions, thus better adapting to the needs of different lens alignment. The scale on the support arm helps operators accurately determine the position of the camera, improving the positional accuracy of the camera in each support arm and thereby enhancing the accuracy of lens alignment. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and, together with the embodiments of the present invention, are used to explain the present invention. They do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is an overall diagram of a high-precision lens group alignment device.

[0021] Figure 2 This utility model is an overall view of the upper housing of a high-precision lens group alignment device.

[0022] Figure 3 This is a schematic diagram of the conveying mechanism;

[0023] Figure 4 This is a schematic diagram of the detection lens assembly.

[0024] In the picture:

[0025] 1. Conveying mechanism; 101. Fixed fixture; 102. First linear screw module; 2. Inspection lens assembly; 201. Base plate; 202. Horizontal plate; 203. Vertical plate; 204. Mounting plate; 205. Support arm; 2051. First guide groove; 2052. Scale; 206. First connecting plate; 2061. Second guide groove; 207. Second connecting plate; 208. Inspection camera; 3. Second linear screw module; 4. Guide rail; 5. Slider; 6. Third linear screw module; 7. First screw knob; 8. Second screw knob; 9. Center plate; 10. Third connecting plate; 11. Third screw knob; 12. Housing; 1201. Inlet / outlet; 1202. Side door; 1203. Mounting rod; 13. Control platform; 14. Support leg; 15. Rolling wheel. Detailed Implementation

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] like Figures 1 to 4 As shown, this utility model claims protection for a high-precision lens group alignment device, including a conveying mechanism 1 and a testing lens group 2. The conveying mechanism 1 includes a fixing fixture 101 for carrying lenses and a first linear screw module 102 for driving the fixing fixture 101 to move. The first linear screw module 102 is used to move the fixing fixture 101 to the testing lens group 2 for lens testing. It also includes a housing 12, one side of which has an inlet / outlet 1201. The end of the first linear screw module 102 extends and protrudes into the inlet / outlet 1201. An external mechanism assists in placing the lens into the fixing fixture 101 and inputting it into the testing lens group 2 for testing via the first linear screw module 102, or after testing, moving the lens from the fixing fixture 101 to the inlet / outlet 1201 under the action of the first linear screw module 102 for removal.

[0028] The housing 12 is provided with a side door 1202, the position of which corresponds to the inspection mirror assembly 2. The side door 1202 is connected to the housing 12 via a hinge, the hinge's rotation angle range is 0 to 150°, which facilitates opening and closing the side door 1202 to operate and maintain the inspection mirror assembly 2.

[0029] The housing 12 is provided with a mounting rod 1203, and the mounting rod 1203 is connected to the control unit 13 via a rotating joint. In this embodiment, the rotating joint is a shaft-hole connection structure, and the control unit 13 is provided with corresponding holes, which are rotatably connected to the mounting rod 1203. In this embodiment, the rotation angle range of the rotating joint is 0 to 360°, which can realize the all-round adjustment of the control unit 13 and adapt to the practical needs of different personnel.

[0030] The inspection mirror assembly 2 includes a base plate 201, a horizontal plate 202 slidably connected to the base plate 201, a vertical plate 203 fixedly connected to the horizontal plate 202, and a mounting plate 204 slidably connected to the vertical plate 203. A second linear screw module 3 is provided on the base plate 201, and the output end of the second linear screw module 3 is connected to the horizontal plate 202. A guide rail 4 is provided on the base plate 201, and a slider 5 is correspondingly provided on the horizontal plate 202. The horizontal plate 202 is connected to the base plate 201 through the sliding cooperation between the slider 5 and the guide rail 4. Therefore, the second linear screw module 3 drives the horizontal plate 202 to move relative to the base plate 201. A third linear screw module 6 is provided on the vertical plate 203, and the output end of the third linear screw module 6 is connected to the mounting plate 204. Therefore, the third linear screw module 6 can drive the mounting plate 204 to move up and down.

[0031] In this embodiment, the first linear screw module 102, the second linear screw module 3, and the third linear screw module 6 all include a screw, a nut, a linear guide rail, and a slide. Rotating the screw ultimately moves the slide, which is existing technology for linear screw modules. Taking the first linear screw module 102 as an example, a movable fixed fixture 101 is connected to the slide, and rotating the screw ultimately controls the movement of the fixed fixture 101. The applications of the second linear screw module 3 and the third linear screw module 6 are similar to those of the first linear screw module 102, and will not be elaborated here. The difference lies in that the screw of the first linear screw module 102 is connected to a motor, driven by the motor for rapid control of the connected slide; while the screws of the second linear screw modules 3 and the third linear screw module 6 are connected to a handwheel, controlled manually by rotating the handwheel. This simple and intuitive operation eliminates the need for a complex electrical control system, significantly reducing equipment cost and energy consumption.

[0032] The mounting plate 204 has 6 to 8 support arms 205 evenly distributed in a ring around its center, with an included angle of 45 to 60° between adjacent support arms 205. Several support arms 205 extend in an arc shape towards the slide table position, with an arc radius of 140 to 160 mm. Each support arm 205 is equipped with a detection camera mechanism, which includes a first connecting plate 206, a second connecting plate 207, and a detection camera 208, with the detection camera 208 fixed to the second connecting plate 207. A first guide groove 2051 is formed along the length of the support arm 205, and a second guide groove 2061 is formed along the length of the first connecting plate 206. The first connecting plate 206 is slidably connected to the first guide groove 2051, and the second connecting plate 207 is slidably connected to the second guide groove 2061. A scale 2052 is provided on the support arm 205 next to the first guide groove 2051.

[0033] It also includes a first screw knob 7 and a second screw knob 8. The first screw knob 7 passes through the first guide groove 2051 and forms a threaded connection with the first connecting plate 206. The second screw knob 8 passes through the second guide groove 2061 and forms a threaded connection with the second connecting plate 207.

[0034] As can be seen from the above connection structure, after adjusting the position of the first connecting plate 206, the first screw knob 7 passes through the first guide groove 2051 and is tightened and fixed to the first connecting plate 206; similarly, after adjusting the position of the second connecting plate 207, the second screw knob 8 passes through the second guide groove 2061 and is fixed to the second connecting plate 207, which helps to adjust the detection camera 208 in multiple positions; in addition, the setting of the scale 2052 helps to improve the positional accuracy of the detection camera 208 in each support arm 205.

[0035] In this embodiment, there are eight support arms 205, with an angle of 45° between adjacent arms. These eight arms are evenly distributed around the lens, ensuring uniform force distribution in all directions. This design guarantees balanced force on the lens during alignment, preventing lens shift, tilting, or damage caused by uneven force. Furthermore, the symmetrical distribution of the eight arms provides excellent stability during operation, ensuring precise alignment. The symmetrical distribution also counteracts some instability caused by external vibrations or operation, contributing to higher alignment yield. Each arm can be adjusted independently or collaboratively, and the 45° angle provides suitable angular resolution, making the adjustment process more precise. Operators can fine-tune each arm as needed, achieving precise lens alignment.

[0036] The 205 support arm has a radius of curvature of 150mm. During lens alignment, the lens needs to be fine-tuned in multiple directions. The 150mm radius of curvature better matches the lens alignment trajectory, providing a smooth adjustment path. Furthermore, the 150mm radius of curvature provides sufficient arc length and space for alignment operations, making the adjustment process smoother. Operators can adjust within a larger arc trajectory, reducing adjustment blind spots and difficulty, ensuring precision and operability during the adjustment process.

[0037] Mounting plate 204 is provided with a center plate 9, a third connecting plate 10 is provided on the center plate 9, and a detection camera 208 is provided on the third connecting plate 10; it also includes a third screw knob 11, which passes through the third connecting plate 10 and is connected to the center plate 9.

[0038] Similar to the adjustment method described above, the third connecting plate 10 is provided with a guide groove through which the third screw knob 11 passes. The guide groove has the same form as the second guide groove 2061. After adjusting the position of the third connecting plate 10, the third screw knob 11 passes through the guide groove of the third connecting plate 10 and connects to the center plate 9. This is used to adjust the front and rear positions of the detection cameras 208 on the third connecting plate 10. Thus, the core-adjusting device has nine adjustable detection cameras 208.

[0039] The bottom of the housing 12 is rectangularly arranged with four height-adjustable support feet 14 and four casters 15. The casters 15 are used for overall movement, which is very convenient. After the position is fixed, the support feet 14 can be screwed down to connect with the ground. When it needs to be moved, the support feet 14 can be screwed up to separate from the ground without affecting the movement. The height-adjustable support feet 14 are existing technology and will not be described in detail here.

[0040] The working principle of this utility model is as follows: The external mechanism places the lens into the fixed fixture 101 of the conveying mechanism 1. The first linear screw module 102 drives the fixed fixture 101 to move, moving the lens to the inspection lens group 2 for inspection. After the inspection is completed, it is moved to the inlet / outlet 1201. The second linear screw module 3 drives the horizontal plate 202 to move horizontally relative to the bottom plate 201, and the third linear screw module 6 drives the mounting plate 204 to rise and fall relative to the vertical plate 203. The support arm 205 on the mounting plate 204 and the center plate 9 are both equipped with inspection cameras 208. The positions of the first connecting plate 206, the second connecting plate 207 and the third connecting plate 10 are adjusted by the first screw knob 7, the second screw knob 8 and the third screw knob 11, respectively, thereby adjusting the position of the inspection camera 208. The scale 2052 helps to improve the position accuracy. The positions of the first connecting plate 206, the second connecting plate 207, and the third connecting plate 10 are adjusted by the first screw knob 7, the second screw knob 8, and the third screw knob 11, respectively, enabling flexible adjustment of the inspection camera 208 in multiple positions and better adapting to the needs of different lens alignment. The scale 2052 on the support arm 205 helps the operator accurately determine the position of the inspection camera 208, improving the positional accuracy of the inspection camera 208 in each support arm 205, thereby enhancing the accuracy of lens alignment.

[0041] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision lens group alignment device, characterized in that: The system includes a conveying mechanism (1) and a testing lens assembly (2). The conveying mechanism (1) includes a fixing fixture (101) for carrying the lens and a first linear screw module (102) for driving the fixing fixture (101) to move. The first linear screw module (102) is used to transfer the fixing fixture (101) to the testing lens assembly (2) for testing the lens. The testing lens assembly (2) includes a base plate (201), a horizontal plate (202) is slidably connected to the base plate (201), a vertical plate (203) is fixedly connected to the horizontal plate (202), and a mounting plate (204) is slidably connected to the vertical plate (203). The mounting plate (204) has 6 to 8 supports (205) evenly distributed in a ring around the center, with an angle of 45 to 60° between adjacent supports (205). The supports (205) are arranged in a sliding manner towards the sliding table. The support arm (205) extends in an arc shape along the work station direction, with an arc curvature radius of 140-160mm. Each support arm (205) is equipped with a detection camera mechanism, which includes a first connecting plate (206), a second connecting plate (207), and a detection camera (208). The detection camera (208) is fixed on the second connecting plate (207). A first guide groove (2051) is provided along the length of the support arm (205), and a second guide groove (2061) is provided along the length of the first connecting plate (206). The first connecting plate (206) is slidably connected to the first guide groove (2051), and the second connecting plate (207) is slidably connected to the second guide groove (2061). A scale (2052) is provided on the support arm (205) next to the first guide groove (2051).

2. The high-precision lens group alignment device according to claim 1, characterized in that: The base plate (201) is provided with a second linear screw module (3), the output end of which is connected to the horizontal plate (202); the base plate (201) is provided with a guide rail (4), and the horizontal plate (202) is provided with a corresponding slider (5). The horizontal plate (202) is connected to the base plate (201) through the sliding cooperation between the slider (5) and the guide rail (4).

3. The high-precision lens group alignment device according to claim 1, characterized in that: The vertical plate (203) is provided with a third linear screw module (6), the output end of which is connected to the mounting plate (204).

4. The high-precision lens group alignment device according to claim 1, characterized in that: It also includes a first screw knob (7) and a second screw knob (8). The first screw knob (7) passes through the first guide groove (2051) and forms a threaded connection with the first connecting plate (206). The second screw knob (8) passes through the second guide groove (2061) and forms a threaded connection with the second connecting plate (207).

5. The high-precision lens group alignment device according to claim 1, characterized in that: The mounting plate (204) is provided with a center plate (9), a third connecting plate (10) is provided on the center plate (9), and a detection camera (208) is provided on the third connecting plate (10); it also includes a third screw knob (11), which passes through the third connecting plate (10) and is connected to the center plate (9).

6. The high-precision lens group alignment device according to any one of claims 1 to 5, characterized in that: It also includes a housing (12), one side of which is reserved with an inlet and outlet (1201), and the end of the first linear screw module (102) extends and is exposed in the inlet and outlet (1201).

7. The high-precision lens group alignment device according to claim 6, characterized in that: The housing (12) is provided with a side door (1202), the position of which corresponds to the detection mirror group (2); the side door (1202) is connected to the housing (12) by a hinge, the rotation angle range of which is 0 to 150°.

8. The high-precision lens group alignment device according to claim 6, characterized in that: The housing (12) is provided with a mounting rod (1203), and a control machine (13) is connected to the mounting rod (1203) via a rotating joint; the rotation angle range of the rotating joint is 0 to 360°, which can realize the all-round adjustment of the control machine (13).

9. The high-precision lens group alignment device according to claim 6, characterized in that: The bottom of the box (12) is provided with four height-adjustable support feet (14) and four rollers (15) arranged in a rectangular pattern.

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