A 12-megapixel fisheye lens and its inspection equipment

Abstract

This invention relates to the field of lens manufacturing technology, specifically to a 12-megapixel fisheye lens and its testing equipment. The testing equipment includes a vertically mounted mounting bracket and a projection target. A vertically movable lifting seat is mounted on the mounting bracket. A loading station, a testing station, a qualified product unloading station, and a non-qualified product unloading station are sequentially arranged around the lifting seat's axis. A rotating seat is coaxially mounted on the top of the lifting seat, and the rotating seat has at least one positioning hole for vertically placing the fisheye lens. The projection device and projection target on the lifting seat are aligned with the axis of the positioning hole that moves to the testing station. A loading device and an unloading device are mounted on the top plate. The fisheye lens of this invention can be vertically placed in the positioning hole of the rotating seat without clamping or fixing. The fisheye lens moves through each station to achieve an automatic testing process, and the results can be sorted and categorized based on the testing findings.

Description

Technical Field

[0001] This invention relates to the field of lens manufacturing technology, specifically to a 12-megapixel fisheye lens and testing equipment. Background Technology

[0002] A fisheye lens is typically a lens with a field of view of 140° or more. Due to its extremely wide field of view, especially those exceeding 180°, it provides imaging without blind spots, making it commonly used in video doorbells, security monitoring, panoramic cameras, action cameras, and automotive applications. In video doorbells, the lens is a core component. Currently, to achieve a compact structure, existing lenses typically employ a hybrid glass-plastic architecture.

[0003] The fisheye lens disclosed in Chinese patent application CN110646919A uses a structure of 4 glass spherical lenses and 2 plastic aspherical lenses, with 3 lenses in front and 3 behind the aperture, and the first lens is made of glass. However, the maximum image height is not large enough to reach 1 / 2.7 inches.

[0004] Therefore, current compact fisheye lenses suffer from problems such as being susceptible to scratches, high development costs, and insufficient image height, and require further improvement.

[0005] Chinese patent CN213580033U discloses a large-angle fisheye lens imaging and inspection device, including a bracket, a projection target, a projection device, and a support plate. The support plate is mounted on the bracket, and a groove is provided at one end of the upper surface of the support plate. The bottom of the projection device is slidably connected to the groove. A resolution target and a mounting frame are provided on the projection device. The mounting frame is provided with a through hole and a second insertion hole. The device also includes a conversion device, which includes a pin, a conversion plate, and a rotating shaft. The middle part of the conversion plate is rotatably connected to the mounting frame through the rotating shaft. The conversion plate is provided with a receiving hole and a first insertion hole. The receiving hole has an internal thread adapted to the fisheye lens. The first insertion hole and the second insertion hole are coaxially arranged, and the pin is inserted into both of them.

[0006] The testing equipment can test multiple fisheye lenses, but it is still necessary to replace the lens to be tested that is clamped and fixed. The operation is complicated and affects the efficiency of the test. In addition, the clamping and fixing may cause wear and tear on the appearance of the lens to be tested. Summary of the Invention

[0007] To address the aforementioned issues, it is necessary to provide a 12-megapixel fisheye lens and its testing equipment, addressing the problems inherent in existing technologies.

[0008] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0009] A 12-megapixel fisheye lens includes a housing and a first lens, a second lens, an aperture stop, a third lens, a fourth lens, a fifth lens, a sixth lens, and a filter, which are coaxially arranged along the axis of the housing from the object plane side to the image plane side. The first lens is a spherical glass lens with negative optical power, with a convex surface on the object plane side and a concave surface on the image plane side. The second lens is an aspherical plastic lens with negative optical power, with a concave surface on the object plane side and a convex surface on the image plane side. The third lens is a spherical glass lens with positive optical power, with a convex surface on both the object plane and image plane sides. The aperture stop is located between the second and third lenses. The fourth and fifth lenses are bonded together to form a cemented lens with negative optical power. The sixth lens is an aspherical plastic lens with positive optical power, with a convex surface on both the object plane and image plane sides.

[0010] Preferably, the absolute value of the ratio of the focal length f1' of the first lens to the focal length f' of the fisheye lens is in the range of 1.2 < |f1' / f'| < 2.0, the refractive index nd1 of the first lens material is in the range of 1.70 ≤ nd1 ≤ 1.80, and the Abbe number Vd1 is in the range of 45 ≤ Vd1 ≤ 55; the absolute value of the ratio of the focal length f2' of the second lens to the focal length f' of the fisheye lens is in the range of 15 < |f2' / f'| < 40, and the refractive index nd2 of the second lens material is in the range of 1.53 ≤ n The absolute value of the ratio of the focal length f3' of the third lens to the focal length f' of the fisheye lens is 1.2 < |f3' / f'| < 2.0; the refractive index nd3 of the material of the third lens is 1.85 ≤ nd3 ≤ 1.95; and the Abbe number Vd3 is 25 ≤ Vd3 ≤ 45. The absolute value of the ratio of the combined focal length f45' of the fourth and fifth lenses to the focal length f' of the fisheye lens is 2.0 < |f3' / f'|. 45 |f' / f'|<3.5, the difference between the refractive index nd5 of the fifth lens and the refractive index nd4 of the fourth lens satisfies nd5-nd4>0.3, the difference between the Abbe number Vd5 of the fifth lens and the Abbe number Vd4 of the fourth lens satisfies Vd4-Vd5>40; the absolute value range of the ratio of the focal length f6' of the sixth lens to the focal length f' of the fisheye lens is 1.5<|f6' / f'|<3.0, the range of the refractive index nd6 of the sixth lens is 1.53≤nd6≤1.70, and the range of the Abbe number Vd6 is 40≤Vd6≤60.

[0011] A testing device for a 12-megapixel fisheye lens includes a mounting bracket and a projection target. The mounting bracket is vertically arranged, with a horizontal top plate on top of the bracket, and the projection target is positioned above the top plate. A vertically movable lifting seat is mounted on the mounting bracket, and a loading station, a testing station, a qualified product unloading station, and a non-qualified product unloading station are sequentially arranged around the lifting seat's axis. A rotating seat is coaxially mounted on the top of the lifting seat, rotating around the lifting seat's axis, and has at least one positioning hole for vertically placing the fisheye lens. A projection device is mounted on the lifting seat, and the projection device and the projection target are aligned with the axis of the positioning hole that moves to the testing station. A loading device is located on one side of the top plate near the loading station. Unloading devices are located on the top plate near the qualified product unloading station and the non-qualified product unloading station, respectively.

[0012] Preferably, the rotating seat has a fan-shaped opening on its periphery, which gradually expands radially along the rotation axis; a fan-shaped block is slidably installed at the opening, and the tip of the fan-shaped block has a notch. The notch and the opening are joined to form a positioning hole, and the inner diameter of the positioning hole is the same as the outer diameter of the fisheye lens.

[0013] Preferably, the sector block is slidably mounted on the rotating seat, and the sector block moves horizontally radially along the rotating seat. A straight cylinder is provided at the bottom of the sector block. A passage is provided on the top plate, and the lifting seat moves up and down within the passage. A first limiting groove is provided at the qualified product unloading station of the passage, and a second limiting groove is provided at the non-qualified product unloading station of the passage. The first and second limiting grooves extend radially along the rotating seat, and the width of the first and second limiting grooves is the same as the maximum width of the sector block. A collection box is fixedly installed below both the first and second limiting grooves.

[0014] Preferably, a vertical insertion rod is provided on the side of the straight cylinder facing the outside of the rotating seat; the feeding device includes an insertion plate, which is horizontally inserted into the collection box and fixedly installed on the working end of the first linear driver. The first linear driver drives the insertion plate to move horizontally along the radial direction of the rotating seat, moving the sector block into the first limiting groove and the second limiting groove; a vertical positioning plate is provided at the outward end of the insertion plate, and a vertical through insertion hole is provided at the inward end of the insertion plate. The positioning plate fits against the outer wall of the collection box, and the axis of the insertion hole and the insertion rod are on the same straight line. The sector block is connected to the first linear driver through the insertion rod.

[0015] Preferably, a second linear driver is fixedly mounted on the mounting bracket, the working end of the second linear driver is oriented upward and moves in the vertical direction, and the lifting seat is fixedly mounted on the working end of the second linear driver.

[0016] Preferably, the rotating seat is connected to the working end of the second rotary driver, and the second rotary driver is fixedly mounted on the lifting seat.

[0017] Preferably, the feeding device is disposed between the projection target surface and the top; the feeding device includes a feeding channel mounted on the upper side of the top plate, and a mounting plate disposed between the feeding channel and the through-hole. The mounting plate is driven to be mounted on the working end of the first rotary driver. The rotation axis of the mounting plate is vertically arranged. A finger cylinder is fixedly mounted on the mounting plate. The working end of the finger cylinder is provided with a gripper. The finger cylinder grips the fisheye lens on the feeding channel and moves it to the feeding station. A baffle is provided on the side of the feeding channel facing the rotating seat, and a discharge port is provided on the side of the baffle facing the rotation direction of the first rotary driver.

[0018] Preferably, the minimum distance between the periphery of the mounting plate and the rotation axis is less than the minimum distance between the rotation axis of the mounting plate and the periphery of the passage.

[0019] The advantages of this invention compared to the prior art are:

[0020] Firstly, the fisheye lens of the present invention is composed of a first lens, a second lens, an aperture, a third lens, a fourth lens, a fifth lens, a sixth lens, and a filter, which are sequentially installed along the axis of the housing from the object side to the image side. The first, third, fourth, and fifth lenses are spherical lenses, while the second and sixth lenses are aspherical lenses. This solves the problems of being not scratch-resistant, having high development costs, and not having a large enough image height. It has the advantages of being scratch-resistant, having low development costs, having a large image area, having a compact structure, having no dead angles in imaging, having confocal focus day and night, and having high clarity.

[0021] Secondly, the present invention realizes the automatic detection process of fisheye lens by rotating the base to move the fisheye lens sequentially to the loading station, the inspection station, the qualified product unloading station and the unqualified product unloading station. The fisheye lens can be continuously and automatically loaded by the loading device and sorted according to the inspection results.

[0022] Third, the fisheye lens in this invention can move vertically along with the lifting seat. The fisheye lens located at the detection station is on the same vertical line as the axis of the projection target surface. The lifting seat can drive the fisheye lens to a suitable projection position for detection. Furthermore, since the fisheye lens can be placed vertically in the positioning hole of the rotating seat, there is no need for clamping and fixing.

[0023] Fourth, the rotating base of the present invention forms a positioning hole through the opening and the sliding fan-shaped block to facilitate the placement of the fisheye lens. The sliding of the straight cylinder below driven by the fan-shaped block can make the fisheye lens detach from the opening of the rotating base and fall into the collection box below, thus achieving rapid unloading. Attached Figure Description

[0024] Figure 1 This is a planar sectional view of a 12-megapixel fisheye lens;

[0025] Figure 2 This is the front view of a detection device with a 12-megapixel fisheye lens;

[0026] Figure 3 It is a 12-megapixel fisheye lens inspection device that operates along the feed path during the loading process. Figure 2 A cross-sectional view along the AA direction;

[0027] Figure 4 yes Figure 3 A magnified view of section B;

[0028] Figure 5 It is a detection device for a 12-megapixel fisheye lens, operating in detection mode along... Figure 2 A cross-sectional view along the AA direction;

[0029] Figure 6 This is an exploded 3D view of a detection device for a 12-megapixel fisheye lens.

[0030] Figure 7 yes Figure 6 A magnified view of a portion at point C;

[0031] Figure 8 yes Figure 6 A magnified view of a portion at point D;

[0032] Figure 9 This is a breakdown of the three-dimensional structure of the lifting and rotating base of a 12-megapixel fisheye lens inspection device. Figure 1 ;

[0033] Figure 10 This is a breakdown of the three-dimensional structure of the lifting and rotating base of a 12-megapixel fisheye lens inspection device. Figure 2 ;

[0034] Figure 11 This is a stereoscopic image of a 12-megapixel fisheye lens inspection device;

[0035] Figure 12 yes Figure 11 A magnified view of a portion at point E.

[0036] The following are the labeling elements in the diagram: 1. Housing; 11. First lens; 12. Second lens; 13. Third lens; 14. Fourth lens; 15. Fifth lens; 16. Sixth lens; 17. Aperture; 18. Filter; 2. Mounting bracket; 21. Projection target surface; 22. Top plate; 221. Passage port; 222. First limiting slide groove; 223. Second limiting slide groove; 224. Collection box; 23. Feeding device; 231. Feeding channel; 232. Mounting plate; 233. First rotary actuator; 234. Finger cylinder; 235. Clamping device. 236. Claw; 237. Baffle; 24. Discharge port; 24. Unloading device; 241. Insert plate; 242. First linear actuator; 243. Positioning plate; 244. Insertion hole; 25. Second linear actuator; 3. Lifting seat; 31. Loading station; 32. Inspection station; 321. Projection device; 33. Qualified product unloading station; 34. Unqualified product unloading station; 35. Second rotary actuator; 4. Rotary seat; 41. Positioning hole; 411. Opening; 42. Sector block; 421. Notch; 422. Straight cylinder; 423. Insert rod. Detailed Implementation

[0037] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0038] Reference Figures 1 to 12 :

[0039] A 12-megapixel fisheye lens includes a housing 1, and a first lens 11, a second lens 12, an aperture 17, a third lens 13, a fourth lens 14, a fifth lens 15, a sixth lens 16, and a filter 18, which are coaxially arranged along the axis of the housing 1 from the object plane side to the image plane side. The first lens 11 is a spherical glass lens with negative optical power, and the object plane side of the first lens 11 is convex, while the image plane side is concave. The second lens 12 is an aspherical plastic lens with negative optical power. The object side of lens 12 is concave, and the image side is convex; the third lens 13 is a spherical glass lens with positive optical power, and both the object and image sides of the third lens 13 are convex; the aperture 17 is located between the second lens 12 and the third lens 13; the fourth lens 14 and the fifth lens 15 are bonded together to form a cemented lens, and the cemented lens has negative optical power; the sixth lens 16 is an aspherical plastic lens with positive optical power, and both the object and image sides of the sixth lens 16 are convex.

[0040] The absolute value of the ratio of the focal length f1' of the first lens 11 to the focal length f' of the fisheye lens is in the range of 1.2 < |f1' / f'| < 2.0, the refractive index nd1 of the material of the first lens 11 is in the range of 1.70 ≤ nd1 ≤ 1.80, and the Abbe number Vd1 is in the range of 45 ≤ Vd1 ≤ 55; the absolute value of the ratio of the focal length f2' of the second lens 12 to the focal length f' of the fisheye lens is in the range of 15 < |f2' / f'| < 40, and the refractive index nd2 of the material of the second lens 12 is in the range of 1.53 ≤ nd2 The absolute value of the ratio of the focal length f3' of the third lens 13 to the focal length f' of the fisheye lens is 1.2 < |f3' / f'| < 2.0; the refractive index nd3 of the material of the third lens 13 is 1.85 ≤ nd3 ≤ 1.95; and the Abbe number Vd3 is 25 ≤ Vd3 ≤ 45. The absolute value of the ratio of the combined focal length f45' of the fourth lens 14 and the fifth lens 15 to the focal length f' of the fisheye lens is 2.0 < |f3' / f'| < 2.0. 45 |f' / f'|<3.5, the difference between the refractive index nd5 of the fifth lens 15 and the refractive index nd4 of the fourth lens 14 satisfies nd5-nd4>0.3, the difference between the Abbe number Vd5 of the fifth lens 15 and the Abbe number Vd4 of the fourth lens 14 satisfies Vd4-Vd5>40; the absolute value range of the ratio of the focal length f6' of the sixth lens 16 to the focal length f' of the fisheye lens is 1.5<|f6' / f'|<3.0, the range of the refractive index nd6 of the sixth lens 16 is 1.53≤nd6≤1.70, and the range of the Abbe number Vd6 is 40≤Vd6≤60.

[0041] The lens comprises a first lens 11, a second lens 12, an aperture 17, a third lens 13, a fourth lens 14, a fifth lens 15, and a sixth lens 16 arranged sequentially, and a filter 18. The fourth lens 14 and the fifth lens 15 are bonded together to form a cemented lens. The fourth lens 14 is a spherical glass lens with positive optical power, and both its object and image planes are convex. The fifth lens 15 is a spherical glass lens with negative optical power, and both its object and image planes are concave. The fourth and fifth lenses are cemented together, resulting in a negative optical power. The aperture 17 is located between the second lens 12 and the third lens 13. Light enters from the object side and passes sequentially through the first lens 11, the second lens 12, the aperture 17, the third lens 13, the fourth lens 14, the fifth lens 15, the sixth lens 16, and the filter 18 before reaching the image sensor.

[0042] The surfaces of the second lens 12 and the sixth lens 16 are both aspherical, and the aspherical surface shape satisfies the following equation:

[0043]

[0044] Where z represents the sag along the optical axis, r represents the distance from a point on the optical surface to the optical axis, c represents the curvature of the surface, c = 1 / RR represents the radius of curvature, k represents the quadratic constant of the surface, and α1, α2, α3, α4, α5, α6, α7, and α8 are the 2nd, 4th, 6th, 8th, 10th, 12th, 14th, and 16th order aspherical coefficients, respectively.

[0045] This fisheye lens is mainly composed of four glass spherical lenses and two plastic aspherical lenses. The number of lenses is reasonable, and the first lens 11 is made of glass, which has high hardness. This fisheye lens has many advantages such as scratch resistance, low development cost, large image area, compact structure, no blind spots in imaging, day and night confocal focus, and high clarity. It is suitable for fields such as video doorbells and security monitoring.

[0046] The filter 18 is used to filter out infrared light so that the lens imaging is not disturbed; preferably, the filter 18 includes, but is not limited to, a day / night confocal filter 18 or a dual filter 18 switcher.

[0047] The first lens 11 is made of glass, which is hard and scratch-resistant. The lens structure consists of 4 glass lenses and 2 plastic aspherical lenses, resulting in low development costs. The maximum imaging circle can reach φ6.6mm, supporting 1 / 2.7-inch image sensors. The total optical length TTL of the lens is less than 13.6mm, while the outer diameter can be less than 14.0mm, making the structure compact. The lens has high clarity, with a full field-of-view resolution of MTF value ≥0.2@160lp / mm. It is also confocal day and night, and the defocus amount is ≤10μm in near-infrared 850nm supplemental lighting mode.

[0048] To enable the detection equipment to continuously detect multiple large-angle fisheye lenses, the following features were specifically designed:

[0049] A testing device for a 12-megapixel fisheye lens includes a mounting bracket 2 and a projection target surface 21. The mounting bracket 2 is vertically arranged, and a horizontal top plate 22 is provided on the top of the mounting bracket 2. The projection target surface 21 is located above the top plate 22. A lifting seat 3 that moves vertically is provided on the mounting bracket 2. A loading station 31, a testing station 32, a qualified product unloading station 33, and a non-qualified product unloading station 34 are arranged sequentially around the axis of the lifting seat 3. A rotating device is coaxially mounted on the top of the lifting seat 3. The rotating seat 4 rotates around the axis of the lifting seat 3. The rotating seat 4 is provided with at least one positioning hole 41 for vertically placing the fisheye lens. The lifting seat 3 is provided with a projection device 321. The projection device 321 and the projection target surface 21 are on the same straight line as the axis of the positioning hole 41 that moves to the detection station 32. The top plate 22 is provided with a feeding device 23 on one side of the feeding station 31. The top plate 22 is provided with a feeding device 24 on one side of the qualified product unloading station 33 and the unqualified product unloading station 34.

[0050] In this embodiment, the fisheye lens is continuously fed by the feeding device 23 to the positioning hole 41 of the rotating seat 4 located on the feeding station 31 of the lifting seat 3, and then follows the rotating seat 4 through the inspection station 32, the qualified product unloading station 33, and the unqualified product unloading station 34 in sequence. The fisheye lens located on the inspection station 32 is aligned with the axis of the projection target surface 21 set on the top of the mounting bracket 2. As the lifting seat 3 moves upward, the fisheye lens moves to a suitable position, and the projection device 321 on the lifting seat 3... The fisheye lens at the testing station 32 is projected, and the image formed by the lens under test is projected onto the spherical surface of the projection target 21 to complete the test. After being processed by the data processing module, the fisheye lens is unloaded when it moves to the qualified product unloading station 33 or the unqualified product unloading station 34 according to the test results. This allows the empty positioning hole 41 to move to the loading station 31 for loading. In this embodiment, the rotating base 4 is provided with four positioning holes 41, so that four fisheye lenses can be moved synchronously, thereby improving the efficiency of the test.

[0051] To facilitate the loading and unloading of fisheye lenses, the following features are specifically designed:

[0052] The rotating base 4 has a fan-shaped opening 411 on its periphery, which gradually expands radially along the rotation axis. A fan-shaped block 42 is slidably installed at the opening 411. The tip of the fan-shaped block 42 has a notch 421. The notch 421 and the opening 411 are joined together to form a positioning hole 41. The inner diameter of the positioning hole 41 is the same as the outer diameter of the fisheye lens.

[0053] The sector block 42 is slidably mounted on the rotating seat 4. The sector block 42 moves horizontally along the radial direction of the rotating seat 4. A straight cylinder 422 is provided at the bottom of the sector block 42. A passage 221 is provided on the top plate 22. The lifting seat 3 moves up and down within the passage 221. A first limiting groove 222 is provided at the qualified product unloading station 33 of the passage 221. A second limiting groove 223 is provided at the non-qualified product unloading station 34 of the passage 221. The first limiting groove 222 and the second limiting groove 223 extend radially along the rotating seat 4. The width of the first limiting groove 222 and the second limiting groove 223 is the same as the maximum width of the sector block 42. A collection box 224 is fixedly installed below the first limiting groove 222 and the second limiting groove 223.

[0054] In this embodiment, the projection target surface 21 is vertically oriented, allowing the fisheye lens to be placed vertically in the positioning hole 41 of the rotating base 4. The inner diameter of the positioning hole 41 is the same as the outer diameter of the fisheye lens, ensuring that when the fisheye lens placed in the positioning hole 41 moves to the detection station 32, it is aligned with the axis of the projection target surface 21, thus ensuring detection accuracy. The positioning on the rotating base 4 is formed by splicing the opening 411 on the periphery of the rotating base 4 with the notch 421 of the fan-shaped block 42. The fan-shaped block 42 can be spring-loaded or magnetically fixed to ensure the stability of the positioning hole 41 when no external force is applied. When the fisheye lens needs to be unloaded, the fan-shaped block... 42 can move outward. The straight cylinder 422 at the bottom of the sector block 42 pushes the fisheye lens outward. The width of the opening 411 gradually increases outward, allowing the fisheye lens to fall through the opening 411 into the collection box 224 at the qualified product unloading station 33 or the unqualified product unloading station 34 for classified collection. The straight cylinder 422 can ensure that the fisheye lens moves directionally into the collection box 224. The width of the first limiting slide 222 at the qualified product unloading station 33 and the second limiting slide 223 at the unqualified product unloading station 34 is the same as the maximum width of the sector block 42, ensuring the stability of the movement path of the sector block 42 and facilitating the reset of the sector block 42.

[0055] To enable the automatic movement of the sector block 42 at the qualified product unloading station 33 and the unqualified product unloading station 34 for unloading, the following features are specifically set:

[0056] The straight cylinder 422 has a vertical insertion rod 423 on the side facing the outside of the rotating seat 4; the feeding device 24 includes an insertion plate 241, which is horizontally inserted into the collection box 224. The insertion plate 241 is fixedly installed on the working end of the first linear driver 242. The first linear driver 242 drives the insertion plate 241 to move horizontally along the radial direction of the rotating seat 4, moving the sector block 42 into the first limiting slide groove 222 and the second limiting slide groove 223; a vertical positioning plate 243 is provided at the outward end of the insertion plate 241, and a vertical through insertion hole 244 is provided at the inward end of the insertion plate 241. The positioning plate 243 fits against the outer wall of the collection box 224, and the axis of the insertion hole 244 and the insertion rod 423 are on the same straight line. The sector block 42 is connected to the first linear driver 242 through the insertion rod 423.

[0057] In this embodiment, the lifting seat 3 moves the fisheye lens into the projection target surface 21 for detection. After the detection is completed, the rotating seat 4 rotates 90 degrees, and the lifting seat 3 moves down to reset. During the downward movement, the insertion rod 423 on the straight cylinder 422 located at the qualified product unloading station 33 and the unqualified product unloading station 34 is inserted into the insertion hole 244 at the top of the insertion plate 241 in the first limiting slide groove 222 and the second limiting slide groove 223. The first linear actuator 242 pulls the insertion plate 241, causing the fan-shaped block 42 to move along the first limiting... The slide 222 or the second limiting slide 223 moves, causing the fisheye lens to fall into the collection box 224 from the opening 411 of the rotating seat 4 and bend for unloading. The first linear drive 242 can be a linear cylinder or an electric push rod, etc. When the unloading is completed, the loading device 23 located at the loading station 31 completes the loading simultaneously. At this time, the lifting seat 3 moves up to disengage the insertion rod 423 from the insertion hole 244. The rotating seat 4 rotates ninety degrees again to move the fisheye lens on the loading station 31 to the inspection station 32 for inspection.

[0058] To enable the lifting platform 3 to move vertically, the following features are specifically designed:

[0059] The second linear driver 25 is fixedly installed on the mounting bracket 2. The working end of the second linear driver 25 is set upward and moves in the vertical direction. The lifting seat 3 is fixedly installed on the working end of the second linear driver 25.

[0060] In this embodiment, the lifting seat 3 is installed at the working end of the second linear actuator 25. The second linear actuator 25 can be a linear cylinder, hydraulic cylinder, or electric push rod, etc. A guide rod can be set at the bottom of the lifting seat 3 and inserted into the guide sleeve set on the mounting bracket 2 to ensure the stability of the vertical movement of the lifting seat 3, thereby ensuring that the second linear actuator 25 can drive the lifting seat 3 to move, and ensuring that the fisheye lens on the detection station 32 moves to a suitable position within the projection target surface 21 for detection.

[0061] To achieve a 90-degree rotation of the swivel base 4 each time, the following features were specifically designed:

[0062] The rotating seat 4 is connected to the working end of the second rotary driver 35, and the second rotary driver 35 is fixedly installed on the lifting seat 3.

[0063] In this embodiment, the rotating seat 4 is mounted on the second rotating driver 35. The second rotating driver 35 can be a servo motor or a turntable, etc. The second rotating driver 35 is mounted on the lifting seat 3 and moves up and down with the lifting seat 3. The rotation of the rotating seat 4 is completed before the lifting seat 3 moves down.

[0064] To enable the feeding device 23 to automatically feed the fisheye lens, the following features are specifically designed:

[0065] The feeding device 23 is disposed between the projection target surface 21 and the top. The feeding device 23 includes a feeding channel 231 installed on the upper side of the top plate 22, and a mounting plate 232 disposed between the feeding channel 231 and the through port 221. The mounting plate 232 is drivenly mounted on the working end of the first rotary driver 233. The rotation axis of the mounting plate 232 is vertically arranged. A finger cylinder 234 is fixedly mounted on the mounting plate 232. The working end of the finger cylinder 234 is provided with a gripper 235. The finger cylinder 234 clamps the fisheye lens on the feeding channel 231 and moves it to the feeding station 31. A baffle 236 is provided on the side of the feeding channel 231 facing the rotating seat 4. A discharge port 237 is provided on the side of the baffle 236 facing the rotation direction of the first rotary driver 233.

[0066] In this embodiment, the fisheye lens is conveyed along the feeding channel 231, which is located between the top plate 22 and the projection target surface 21. Each time, the lifting seat 3 moves down to a position where the upper surface of the rotating seat 4 is flush with the upper surface of the top plate 22. The first rotary driver 233 drives the finger cylinder 234 to move to the feeding channel 231. The gripper 235 of the finger cylinder 234 grips the fisheye lens and moves it from the discharge port 237 on one side of the feeding channel 231 to above the positioning hole 41 at the detection station 32. Then, the gripper 235 releases the fisheye lens, and the fisheye lens enters the positioning hole 41 and moves with the rotating seat 4. The first rotary driver 233 can be a servo motor.

[0067] To ensure that the feeding device 23 does not affect the upward movement of the lifting platform 3, the following features are specifically designed:

[0068] The minimum distance between the periphery of the mounting plate 232 and the rotation axis is less than the minimum distance between the rotation axis of the mounting plate 232 and the periphery of the through port 221.

[0069] In this embodiment, the minimum distance between the periphery of the mounting plate 232 and the rotation axis is less than the minimum distance between the rotation axis of the mounting plate 232 and the periphery of the passage 221, thereby ensuring that when the finger cylinder 234 moves to one side of the feeding channel 231, the mounting plate 232 will not block the upper side of the passage 221, ensuring that the lifting seat 3 can move in the vertical direction.

[0070] Working principle: The fisheye lens is continuously conveyed by the feeding device 23 to the positioning hole 41 of the rotating seat 4 located on the feeding station 31 of the lifting seat 3, and then follows the rotating seat 4 through the inspection station 32, the qualified product unloading station 33, and the unqualified product unloading station 34 in sequence. The fisheye lens located on the inspection station 32 is on the same straight line as the axis of the projection target surface 21 set on the top of the mounting bracket 2. The lifting seat 3 moves the fisheye lens to a suitable position, and the projection device 321 on the lifting seat 3 projects the image of the fisheye lens on the inspection station 32. The image formed by the lens under test is projected onto the spherical surface of the projection target surface 21 to complete the inspection. After being processed by the data processing module, the fisheye lens is unloaded when it moves to the qualified product unloading station 33 or the unqualified product unloading station 34, so that the empty positioning hole 41 can be moved to the feeding station 31 again for feeding.

[0071] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A testing device for a 12-megapixel fisheye lens, comprising a mounting bracket (2) and a projection target surface (21), characterized in that, The mounting bracket (2) is set vertically, and a horizontal top plate (22) is set on the top of the mounting bracket (2), with the projection target surface (21) set above the top plate (22); The mounting bracket (2) is provided with a lifting seat (3) that moves vertically. The lifting seat (3) is arranged in sequence around the axis of the lifting seat (3) with a loading station (31), an inspection station (32), a qualified product unloading station (33), and a non-qualified product unloading station (34). A rotating seat (4) is coaxially mounted on the top of the lifting seat (3). The rotating seat (4) rotates around the axis of the lifting seat (3). At least one positioning hole (41) for vertically placing the fisheye lens is provided on the rotating seat (4). A projection device (321) is provided on the lifting seat (3). The projection device (321) and the projection target (21) are on the same straight line as the axis of the positioning hole (41) on the inspection station (32). The top plate (22) is equipped with a feeding device (23) on one side of the feeding station (31); The top plate (22) is equipped with a feeding device (24) on one side of the qualified product feeding station (33) and the unqualified product feeding station (34). The rotating seat (4) has a fan-shaped opening (411) on its periphery, and the opening (411) gradually expands radially along the rotation axis. A sector block (42) is slidably installed at the opening (411). The tip of the sector block (42) is provided with a notch (421). The notch (421) and the opening (411) are spliced ​​together to form a positioning hole (41). The inner diameter of the positioning hole (41) is the same as the outer diameter of the fisheye lens. The sector block (42) is slidably mounted on the rotating seat (4), and the sector block (42) moves horizontally along the radial direction of the rotating seat (4). A straight cylinder (422) is provided at the bottom of the sector block (42). The top plate (22) is provided with a passage (221), and the lifting seat (3) moves up and down within the passage (221). The passage (221) is provided with a first limiting groove (222) at the qualified product unloading station (33), and the passage (221) is provided with a second limiting groove (223) at the unqualified product unloading station (34). A collection box (224) is fixedly installed below both the first limiting slide (222) and the second limiting slide (223).

2. The detection device for a 12-megapixel fisheye lens according to claim 1, characterized in that, The first limiting groove (222) and the second limiting groove (223) extend radially along the rotating seat (4), and the width of the first limiting groove (222) and the second limiting groove (223) is the same as the maximum width of the sector block (42).

3. The detection device for a 12-megapixel fisheye lens according to claim 1, characterized in that, The straight cylinder (422) has a vertical insert (423) on the side facing the outside of the rotating seat (4). The feeding device (24) includes a plate (241), which is horizontally inserted into the collection box (224). The plate (241) is fixedly installed on the working end of the first linear driver (242). The first linear driver (242) drives the plate (241) to move horizontally along the radial direction of the rotating seat (4) to move the sector block (42) into the first limiting groove (222) and the second limiting groove (223). A vertical positioning plate (243) is provided at the outward end of the insertion plate (241), and a vertical through-hole (244) is provided at the inward end of the insertion plate (241). The positioning plate (243) fits against the outer wall of the collection box (224), and the axis of the through-hole (244) and the insertion rod (423) are on the same straight line. The fan-shaped block (42) is connected to the first linear driver (242) through the insertion rod (423).

4. The detection device for a 12-megapixel fisheye lens according to claim 1, characterized in that, The second linear driver (25) is fixedly installed on the mounting bracket (2). The working end of the second linear driver (25) is set upward and moves in the vertical direction. The lifting seat (3) is fixedly installed on the working end of the second linear driver (25).

5. The detection device for a 12-megapixel fisheye lens according to claim 4, characterized in that, The rotating seat (4) is connected to the working end of the second rotary driver (35), which is fixedly installed on the lifting seat (3).

6. The detection device for a 12-megapixel fisheye lens according to claim 1, characterized in that, The feeding device (23) is disposed between the projection target surface (21) and the top; The feeding device (23) includes a feeding channel (231) installed on the upper side of the top plate (22) and a mounting plate (232) set between the feeding channel (231) and the passage (221). The mounting plate (232) is driven to be installed on the working end of the first rotary driver (233). The rotation axis of the mounting plate (232) is set vertically. A finger cylinder (234) is fixedly installed on the mounting plate (232). The working end of the finger cylinder (234) is provided with a gripper (235). The finger cylinder (234) clamps the fisheye lens on the feeding channel (231) and moves it to the feeding station (31). The feeding channel (231) is provided with a baffle (236) on the side facing the rotating seat (4), and the baffle (236) is provided with a discharge port (237) on the side facing the rotation direction of the first rotary driver (233).

7. The detection device for a 12-megapixel fisheye lens according to claim 6, characterized in that, The minimum distance between the periphery of the mounting plate (232) and the rotation axis is less than the minimum distance between the rotation axis of the mounting plate (232) and the periphery of the through port (221).

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