A fixture for testing lens uniformity

Abstract

The present disclosure relates to the technical field of uniformity detection tooling, and one embodiment of the present disclosure provides a lens uniformity detection tooling, which comprises a base, a first mounting seat and a second mounting seat arranged on the base, the first mounting seat has two, the two first mounting seats are both slidingly arranged on the base, the second mounting seat is located between the sliding tracks of the two first mounting seats, and the second mounting seat is used for placing a lens to be detected, characterized in that it further comprises auxiliary lenses, the auxiliary lenses have two, the two auxiliary lenses are respectively rotationally arranged on the first mounting seat, the rotation plane of the auxiliary lens is parallel to the lens to be detected, and the two auxiliary lenses are used for contacting two surfaces of the lens to be detected respectively. Through the above technical scheme, the technical problem that bubbles are generated in the process of attaching the auxiliary lens to the lens to be detected in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of lens uniformity testing technology, and more specifically to a testing fixture for lens uniformity. Background Technology

[0002] To reduce the cost of testing the uniformity of materials in large lenses, a new testing method has emerged on the market: the lens mounting uniformity testing method. This method requires first bonding two smooth lenses of the same material onto a matte lens to be tested. A matching liquid (similar to the refractive index of matte glass) is added between the contact surfaces of the mirrors to fill the gaps. An interferometer can then test the surface of the matte mirror through the combination of three mirrors.

[0003] However, when the test mirror is inserted between two smooth mirrors, a large number of air bubbles will be generated between the test mirror and the smooth mirror because the surfaces of the test mirrors are different in height. As a result, the matching fluid cannot be completely filled, leading to inaccurate test results.

[0004] To implement this testing method, a lens uniformity testing fixture was designed to achieve electric bonding of lenses to complete the testing of material uniformity. Summary of the Invention

[0005] The purpose of this invention is to provide a testing fixture for lens uniformity, which solves the technical problem of air bubbles being generated during the bonding process between the auxiliary lens and the lens to be tested in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following solution: A fixture for testing lens uniformity includes a base and a first mounting seat and a second mounting seat disposed on the base. There are two first mounting seats, both of which are slidably disposed on the base. The second mounting seat is located between the sliding tracks of the two first mounting seats. The second mounting seat is used to place the lens to be tested. The fixture also includes two auxiliary lenses, each of which is rotatably disposed on the first mounting seat. The rotation plane of the auxiliary lenses is parallel to the lens to be tested, and the two auxiliary lenses are used to contact two surfaces of the lens to be tested.

[0007] As a further technical solution, it also includes a support component and a rotation drive component, both of which are disposed on the first mounting base. The support component is used to support the auxiliary lens, and the rotation drive component is used to drive the auxiliary lens to rotate.

[0008] As a further technical solution, the support component includes a chain, which is U-shaped and mounted on the first mounting base. The peripheral side of the auxiliary lens contacts the chain. The rotation drive component includes a first drive belt and a first drive wheel. The first drive wheel is rotatably mounted on the first mounting base. The first drive belt is sleeved on the first drive wheel and the auxiliary lens. The first drive belt is located between the auxiliary lens and the chain. The rotation of the first drive wheel is used to drive the auxiliary lens to rotate via the first drive belt.

[0009] As a further technical solution, the support assembly also includes a support roller, and there are multiple support rollers distributed along the periphery of the auxiliary lens. The rotation drive assembly includes a second drive belt and a second drive wheel. The second drive wheel is rotatably mounted on the first mounting base. The second drive belt is sleeved on the second drive wheel and the auxiliary lens. The second drive belt is located between the auxiliary lens and the chain. The rotation of the first drive wheel is used to drive the auxiliary lens to rotate through the second drive belt.

[0010] As a further technical solution, the support component also includes a limiting wheel, which is disposed on the first mounting seat, and the first mounting seat contacts the end of the chain away from the auxiliary lens.

[0011] As a further technical solution, the rotation drive assembly also includes a tensioning wheel, which is disposed on the first mounting base and is used to contact the drive belt and to tension the second drive belt.

[0012] As a further technical solution, it also includes a linear drive assembly and a camera. The linear drive assembly is disposed on the base. There are two linear drive assemblies, and the two linear drive assemblies are connected to the first mounting base. The camera is disposed on the second mounting base and is electrically connected to the linear drive assembly. The camera drives the sliding direction of the first mounting base by identifying whether there are air bubbles between the auxiliary lens and the lens under test.

[0013] As a further technical solution, it also includes a mounting platform and clamping components. The mounting platform is disposed on the second mounting base and is used to place the lens to be tested. There are two clamping components, both of which are slidably disposed on the second mounting base. The two clamping components slide closer to or further away from each other and are used to contact the two ends of the lens to be tested.

[0014] As a further technical solution, the device also includes a mounting rod having a plurality of mounting holes distributed vertically on the mounting rod, and the clamping member having an insertion portion for inserting into the mounting holes.

[0015] As a further technical solution, it also includes air-floating discs, at least two of which are disposed at the bottom of the base and are used to contact the surface of the workbench.

[0016] The beneficial effects of this invention are as follows: In this invention, the auxiliary lens has a light-transmitting aperture of not less than φ380mm, and the maximum size of the lens under test is 600×600×150mm. With the fixture height compressed, the center height of the φ380mm smooth lens is 404.5mm, which ensures that the smooth lens is within the detection range of a φ450mm diameter interferometer. In the lens production workshop, when it is necessary to test the uniformity of a matte lens, the lens under test is placed on the second mounting base. Then, by sliding the first mounting base, the two auxiliary lenses are gradually brought closer to the lens under test until they make contact. For example, for a circular lens under test with a diameter of 150mm, by adjusting the position of the first mounting base, the auxiliary lens is accurately attached to the surface of the lens under test. Before attachment, the auxiliary lens rotates on the second mounting base. During the rotation and contact process, matching fluid is added between the auxiliary lens and the lens under test. When the auxiliary lens comes into contact with the mirror surface of the lens under test, air bubbles are generated. As the second rotating base rotates, the air bubbles are flung out, allowing the matching fluid to penetrate between the two mirror surfaces. Ultimately, the lens under test and the auxiliary lens make full contact without the generation of air bubbles, which would affect the testing of the lens under test. This structural design enables the auxiliary lens to accurately contact the lens under test, providing a foundation for lens attachment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a lens uniformity testing fixture in one embodiment of the present disclosure (before testing). Figure 2 This is a schematic diagram of a fixture for detecting lens uniformity in one embodiment of the present disclosure (in the process of detection). Figure 3 for Figure 1 A schematic diagram of the supporting component in the embodiment; Figure 4 for Figure 3 A schematic diagram of another embodiment of the central support component; Figure 5 for Figure 1 A schematic diagram of the structure of the second mounting base in the embodiment; Figure 6 for Figure 5 A schematic diagram of another embodiment of the second mounting base in the embodiments; Figure 7 for Figure 1 A schematic diagram of the bottom structure of the base in the embodiment; Figure 8 for Figure 1 A schematic diagram of the structure connecting the embodiment to the interferometer; Reference numerals: 1. Base; 2. First mounting base; 3. Second mounting base; 4. Lens to be tested; 5. Auxiliary lens; 6. Support assembly; 7. Rotation drive assembly; 601. Chain; 602. Supporting wheel; 603. Limiting wheel; 701. First drive belt; 702. First drive wheel; 703. Second drive belt; 704. Second drive wheel; 705. Tensioning wheel; 8. Linear drive assembly; 9. Camera; 10. Mounting platform; 11. Clamping element; 12. Mounting rod; 13. Mounting hole; 14. Insertion part; 15. Air float; 16. Interferometer. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "longitudinal," "lateral," "horizontal," "inner," "outer," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, 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 invention.

[0021] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] A fixture for detecting lens uniformity includes a base 1 and a first mounting seat 2 and a second mounting seat 3 disposed on the base 1. There are two first mounting seats 2, both of which are slidably disposed on the base 1. The second mounting seat 3 is located between the sliding tracks of the two first mounting seats 2. The second mounting seat 3 is used to place the lens 4 to be tested. It also includes two auxiliary lenses 5, which are rotatably disposed on the first mounting seats 2 respectively. The rotation plane of the auxiliary lenses 5 is parallel to the lens 4 to be tested. The two auxiliary lenses 5 are used to contact two surfaces of the lens 4 to be tested respectively.

[0023] In this embodiment, as Figure 1 , Figure 2 and Figure 8 As shown, the auxiliary lens 5 has a light-transmitting aperture of not less than φ380mm, and the maximum size of the lens under test is 600×600×150mm. With the fixture height compressed, the center height of the φ380mm smooth lens is 404.5mm, which ensures that the smooth lens is within the detection range of the φ450mm aperture interferometer 16. In the lens production workshop, when it is necessary to perform uniformity testing on the matte lens 4, the lens 4 is placed on the second mounting base 3. Then, by sliding the first mounting base 2, the two auxiliary lenses 5 are gradually brought closer to the lens 4 until they contact each other. For example, for a circular lens 4 with a diameter of 150mm, by adjusting the position of the first mounting base 2, the auxiliary lens 5 is accurately attached to the surface of the lens 4. Before attachment, the auxiliary lens 5 rotates on the second mounting base 3. During the rotation and contact process, matching fluid is added between the auxiliary lens 5 and the lens 4. When the auxiliary lens 5 comes into contact with the mirror surface of the lens 4, air bubbles are generated. As the second rotating base rotates, the air bubbles are flung out, allowing the matching fluid to penetrate between the two mirror surfaces. Finally, the lens 4 and the auxiliary lens 5 make full contact without the generation of air bubbles, which would affect the testing of the lens 4. This structural design enables the auxiliary lens 5 to accurately contact the lens 4, providing a basis for lens attachment.

[0024] Furthermore, it also includes a support component 6 and a rotation drive component 7, both of which are disposed on the first mounting base 2. The support component 6 is used to support the auxiliary lens 5, and the rotation drive component 7 is used to drive the auxiliary lens 5 to rotate.

[0025] In this embodiment, both the support component 6 and the rotation drive component 7 are mounted on the first mounting base 2. The support component 6 stably supports the auxiliary lens 5, ensuring its stability during rotation and bonding with the lens under test 4. The rotation drive component 7 provides power for the rotation of the auxiliary lens 5. During the lens bonding operation, the support component 6 firmly supports the auxiliary lens 5, and the rotation drive component 7 drives the auxiliary lens 5 to rotate, enabling the auxiliary lens 5 to bond with the lens under test 4 at a suitable angle and speed. For example, when testing lenses 4 of different thicknesses, the support component 6 can be adjusted according to the position of the auxiliary lens 5, and the rotation drive component 7 can adjust the rotation speed of the auxiliary lens 5 according to the bonding requirements.

[0026] Furthermore, the support assembly 6 includes a chain, which is U-shaped and mounted on the first mounting base 2. The peripheral side of the auxiliary lens 5 contacts the chain. The rotation drive assembly 7 includes a first drive belt 701 and a first drive wheel 702. The first drive wheel 702 is rotatably mounted on the first mounting base 2. The first drive belt 701 is sleeved on the first drive wheel 702 and the auxiliary lens 5. The first drive belt 701 is located between the auxiliary lens 5 and the chain. The rotation of the first drive wheel 702 is used to drive the auxiliary lens 5 to rotate via the first drive belt 701.

[0027] In this embodiment, as Figure 3As shown, the chain of the supporting component 6 is made of high-strength stainless steel and is U-shaped, wrapped around the first mounting base 2. The chain width is 15mm, and it is in close contact with the periphery of the auxiliary lens 5, providing stable support for the auxiliary lens 5. The connecting wall of each link of the chain can limit the auxiliary lens 5, preventing it from detaching from the chain. Furthermore, the chain allows the matching fluid between the auxiliary lens 5 and the lens under test 4 to flow out through the gaps between the chains, preventing accumulation and thus avoiding affecting the test results of the lens under test 4. The first drive wheel 702 of the rotation drive component 7 is made of aluminum alloy and has a diameter of 80mm. It is rotatably mounted on the first mounting base 2 via bearings. The first drive belt 701 is a polyurethane synchronous belt with good wear resistance and transmission accuracy. It is fitted onto the first drive wheel 702 and the auxiliary lens 5, and is located between the auxiliary lens 5 and the chain. When the first drive wheel 702 rotates, it drives the auxiliary lens 5 to rotate via the first drive belt 701. During actual testing, the rotation drive assembly 7 is activated, and the first drive wheel 702 begins to rotate. Power is transmitted to the auxiliary lens 5 via the first drive belt 701, allowing the auxiliary lens 5 to rotate smoothly under the support of the chain and gradually come into contact with the lens 4 to be tested. For example, when testing multiple lenses consecutively, this transmission structure can ensure the consistency of each rotation of the auxiliary lens 5, improving testing efficiency and accuracy.

[0028] Furthermore, the support assembly 6 also includes multiple support rollers distributed around the periphery of the auxiliary lens 5. The rotation drive assembly 7 includes a second drive belt 703 and a second drive wheel 704. The second drive wheel 704 is rotatably mounted on the first mounting base 2. The second drive belt 703 is sleeved on the second drive wheel 704 and the auxiliary lens 5. The second drive belt 703 is located between the auxiliary lens 5 and the chain. The first drive wheel 702 rotates to drive the auxiliary lens 5 to rotate via the second drive belt 703.

[0029] In this embodiment, as Figure 4As shown, this is a second embodiment of the support assembly 6. Besides using a chain, the support assembly 6 can also use multiple support rollers. These rollers are made of engineering plastic, have a diameter of 30mm, and are evenly distributed along the periphery of the auxiliary lens 5, with a total of six rollers. The support rollers are rotatably mounted on the first mounting base 2 via pins, allowing for flexible rotation. The rotation drive assembly 7 also includes a second drive wheel 704 and a second drive belt 703. The second drive wheel 704 is made of alloy steel, has a diameter of 60mm, and is rotatably mounted on the first mounting base 2 via bearings. The second drive belt 703 is also a polyurethane synchronous belt, fitted onto the second drive wheel 704 and the auxiliary lens 5, and located between the auxiliary lens 5 and the chain. When the second drive wheel 704 rotates, it drives the auxiliary lens 5 to rotate via the second drive belt 703. The support rollers and the chain work together to provide more stable support for the auxiliary lens 5. During lens bonding, the auxiliary lens 5, supported by the support rollers and the chain, is driven to rotate by the second drive wheel 704 via the second drive belt 703. The support rollers make the auxiliary lens 5 rotate more smoothly, reducing wobbling caused by uneven local forces. For example, for a large-sized auxiliary lens 5, the support rollers can better distribute the weight of the auxiliary lens 5, ensuring its rotational stability.

[0030] Furthermore, the support component 6 also includes a limiting wheel, which is disposed on the first mounting base 2, and the first mounting base 2 is in contact with the end of the chain away from the auxiliary lens 5.

[0031] In this embodiment, the limiting wheel is made of rubber, has a diameter of 20mm, and is mounted on the first mounting base 2, contacting the end of the chain furthest from the auxiliary lens 5. The limiting wheel's function is to restrict the chain's position, preventing it from shifting during the rotation of the auxiliary lens 5 and ensuring the chain stably supports the auxiliary lens 5. During prolonged rotation of the auxiliary lens 5, the limiting wheel continuously limits the chain's position. For example, when continuously testing a large number of lenses, the limiting wheel effectively prevents the chain from shifting, ensuring the stability of the support assembly 6, thereby ensuring the normal rotation of the auxiliary lens 5 and its contact with the lens 4 under test. The limiting wheel enhances the stability of the support assembly 6.

[0032] Furthermore, the rotation drive assembly 7 also includes a tensioning wheel, which is disposed on the first mounting base 2 and is used to contact the drive belt. The tensioning wheel is used to tension the second drive belt 703.

[0033] In this embodiment, the tensioning pulley is made of aluminum alloy with a diameter of 40mm. It is mounted on the first mounting base 2 and contacts the second drive belt 703 to tension the second drive belt 703. The tensioning pulley is mounted on the first mounting base 2 via adjusting bolts and can be adjusted according to the tightness of the second drive belt 703. During the operation of the testing fixture, the second drive belt 703 may become loose as the equipment is used. At this time, by adjusting the position of the tensioning pulley, the second drive belt 703 can be kept at a suitable tension, ensuring the transmission efficiency and stability of the rotation drive assembly 7. For example, when continuously testing lenses for a long time, periodically checking and adjusting the tensioning pulley can ensure that the rotation speed of the auxiliary lens 5 remains stable and that transmission slippage caused by belt loosening does not occur. The tensioning pulley ensures the transmission stability of the rotation drive assembly 7.

[0034] Furthermore, it also includes a linear drive assembly 8 and a camera 9. The linear drive assembly 8 is disposed on the base 1. There are two linear drive assemblies 8, and the two linear drive assemblies 8 are connected to the first mounting base 2. The camera 9 is disposed on the second mounting base 3 and is electrically connected to the linear drive assembly 8. The camera 9 drives the sliding direction of the first mounting base 2 by identifying whether there are air bubbles between the auxiliary lens 5 and the lens under test 4.

[0035] In this embodiment, the linear drive assembly 8 is driven by an electric push rod or lead screw, with a maximum stroke of 500mm. Two linear drive assemblies 8 are respectively mounted on the base 1, with their telescopic ends connected to the first mounting base 2, allowing precise control of the sliding of the first mounting base 2. The camera 9 is an industrial-grade high-definition camera with a resolution of 1280×1024, mounted on the second mounting base 3 and electrically connected to the linear drive assembly 8. The camera 9 captures real-time images of the fit between the auxiliary lens 5 and the lens under test 4, identifying any air bubbles between them and feeding the signal back to the linear drive assembly 8, thereby controlling the sliding direction of the first mounting base 2. During the lens bonding process, the camera 9 monitors the air bubble situation between the auxiliary lens 5 and the lens under test 4 in real time. When an air bubble is detected, the camera 9 transmits a signal to the linear drive assembly 8, which drives the first mounting base 2 to slide in the opposite direction, adjusting the fit between the auxiliary lens 5 and the lens under test 4. The linear drive assembly 8 then drives the first mounting base 2 to slide forward, causing the auxiliary lens 5 and the lens under test 4 to re-enter the bonded state. This process is repeated until the air bubble is eliminated. For example, when inspecting a batch of lenses, camera 9 can quickly and accurately identify air bubbles and adjust the lens fit in a timely manner through linear drive component 8 to ensure the accuracy of the inspection results.

[0036] Furthermore, it also includes a mounting platform 10 and clamping members 11. The mounting platform 10 is disposed on the second mounting base 3 and is used to place the lens 4 to be tested. There are two clamping members 11, both of which are slidably disposed on the second mounting base 3. The two clamping members 11 slide close to or away from each other and are used to contact the two ends of the lens 4 to be tested.

[0037] In this embodiment, as Figure 5-6 As shown, the mounting platform 10 is made of stainless steel with a polished surface, measuring 300mm in length and 200mm in width. It is mounted on the second mounting base 3 and used to place the lens 4 to be tested. The clamping members 11 are made of aluminum alloy. Two clamping members 11 are arranged opposite each other and can be controlled by a manual knob or an electric drive to slide closer or further apart, thus contacting both ends of the lens 4 to firmly clamp it. After the lens 4 is placed, the clamping members 11 are operated to ensure tight contact with both ends of the lens 4, preventing displacement during testing. For example, for lenses 4 of different sizes, the position of the clamping members 11 can be adjusted to firmly clamp them, ensuring accurate testing.

[0038] Furthermore, it also includes a mounting rod 12, which has a plurality of mounting holes 13 distributed vertically on the mounting rod 12, and the clamping member 11 has an insertion part 14 for inserting into the mounting holes 13.

[0039] In this embodiment, the mounting rod 12 is made of stainless steel, has a diameter of 20mm, and is vertically mounted on the second mounting base 3. Several mounting holes 13 are evenly distributed vertically along the mounting rod 12, each with a diameter of 8mm and a spacing of 20mm. The insertion part 14 of the clamping member 11 is cylindrical, with a diameter of 7mm, and can be inserted into the mounting holes 13. By inserting the insertion part 14 into mounting holes 13 at different heights, the height of the clamping member 11 can be adjusted to accommodate lenses 4 of different thicknesses. In actual operation, if the lens 4 to be tested is thin, the insertion part 14 of the clamping member 11 can be inserted into a lower mounting hole 13, allowing the clamping member 11 to accurately contact and clamp both ends of the lens 4 to be tested. Conversely, if the lens to be tested 4 is thicker, the insertion part 14 is inserted into the mounting hole 13 at a higher position and closer to the surface; while for the lens to be tested 4 with a thickness of 30mm, the mounting hole 13 at a higher position is selected to ensure good clamping effect. The setting of the mounting rod 12 and the mounting hole 13 allows the clamping part 11 to adapt to the lens to be tested 4 with different thicknesses.

[0040] Furthermore, it also includes air-floating discs 15, of which there are at least two, and at least two air-floating discs 15 are disposed at the bottom of the base 1, and the air-floating discs 15 are used to contact the surface of the workbench.

[0041] In this embodiment, as Figure 7 As shown, two air floats 15, each 150mm in diameter, are selected and positioned at the bottom of the base 1. The air floats 15 are connected to an external air source via air pipes. The air source provides stable compressed air, creating a thin air film between the air floats 15 and the worktable surface, suspending the base 1. The air floats 15 effectively reduce the friction between the base 1 and the worktable, making the movement of the entire inspection fixture on the worktable smoother and more flexible. In a lens inspection workshop, the air floats 15 play a crucial role when the position of the inspection fixture needs to be adjusted to adapt to different inspection processes or to coordinate with other equipment. For example, on a production line, the inspection fixture needs to be periodically moved to different positions for lens loading, inspection, and unloading operations. The air floats 15 allow the fixture to move easily without vibration caused by friction affecting inspection accuracy. The placement of the air floats 15 reduces the friction between the base 1 and the worktable, improving the flexibility of the inspection fixture's movement.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Based on the technical essence of the present invention, any simple modifications, equivalent substitutions, and improvements made to the above embodiments within the spirit and principles of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A fixture for detecting lens uniformity, comprising a base (1) and a first mounting seat (2) and a second mounting seat (3) disposed on the base (1), wherein there are two first mounting seats (2), both of which are slidably disposed on the base (1), and the second mounting seat (3) is located between the sliding paths of the two first mounting seats (2), and the second mounting seat (3) is used to place the lens (4) to be tested, characterized in that, It also includes auxiliary lenses (5), there are two auxiliary lenses (5), the two auxiliary lenses (5) are respectively rotatably mounted on the first mounting base (2), the rotation plane of the auxiliary lenses (5) is parallel to the lens to be tested (4), and the two auxiliary lenses (5) are used to contact the two surfaces of the lens to be tested (4) respectively.

2. The fixture for detecting lens uniformity according to claim 1, characterized in that, It also includes a support component (6) and a rotation drive component (7), both of which are mounted on the first mounting base (2). The support component (6) is used to support the auxiliary lens (5), and the rotation drive component (7) is used to drive the auxiliary lens (5) to rotate.

3. The fixture for detecting lens uniformity according to claim 2, characterized in that, The support assembly (6) includes a chain (601) which is U-shaped and mounted on the first mounting base (2). The peripheral side of the auxiliary lens (5) is in contact with the chain (601). The rotation drive assembly (7) includes a first drive belt (701) and a first drive wheel (702). The first drive wheel (702) is rotatably mounted on the first mounting base (2). The first drive belt (701) is sleeved on the first drive wheel (702) and the auxiliary lens (5). The first drive belt (701) is located between the auxiliary lens (5) and the chain (601). The rotation of the first drive wheel (702) is used to drive the auxiliary lens (5) to rotate through the first drive belt (701).

4. The fixture for detecting lens uniformity according to claim 3, characterized in that, The support assembly (6) further includes a support roller (602), and there are multiple support rollers (602) distributed around the periphery of the auxiliary lens (5). The rotation drive assembly (7) includes a second drive belt (703) and a second drive wheel (704). The second drive wheel (704) is rotatably mounted on the first mounting base (2). The second drive belt (703) is sleeved on the second drive wheel (704) and the auxiliary lens (5). The second drive belt (703) is located between the auxiliary lens (5) and the chain (601). The first drive wheel (702) rotates to drive the auxiliary lens (5) to rotate via the second drive belt (703).

5. The fixture for detecting lens uniformity according to claim 4, characterized in that, The support assembly (6) also includes a limiting wheel (603), which is disposed on the first mounting base (2), and the first mounting base (2) is in contact with the end of the chain (601) away from the auxiliary lens (5).

6. The fixture for detecting lens uniformity according to claim 5, characterized in that, The rotation drive assembly (7) further includes a tension wheel (705) which is disposed on the first mounting base (2) and is used to contact the drive belt. The tension wheel (705) is used to tension the second drive belt (703).

7. The fixture for detecting lens uniformity according to claim 1, characterized in that, It also includes a linear drive assembly (8) and a camera (9). The linear drive assembly (8) is disposed on the base (1). There are two linear drive assemblies (8). The two linear drive assemblies (8) are connected to the first mounting base (2). The camera (9) is disposed on the second mounting base (3). The camera (9) is electrically connected to the linear drive assembly (8). The camera (9) drives the sliding direction of the first mounting base (2) by identifying whether there are air bubbles between the auxiliary lens (5) and the lens under test (4).

8. The fixture for detecting lens uniformity according to claim 1, characterized in that, It also includes a mounting platform (10) and clamping members (11). The mounting platform (10) is disposed on the second mounting base (3) and is used to place the lens to be tested (4). There are two clamping members (11). Both clamping members (11) are slidably disposed on the second mounting base (3). The two clamping members (11) slide close to or away from each other and are used to contact the two ends of the lens to be tested (4).

9. A fixture for detecting lens uniformity according to claim 8, characterized in that, It also includes a mounting rod (12) having a plurality of mounting holes (13) distributed vertically on the mounting rod (12), and the clamping member (11) having an insertion part (14) for inserting into the mounting holes (13).

10. The fixture for detecting lens uniformity according to claim 1, characterized in that, It also includes air floats (15), there are at least two air floats (15), at least two air floats (15) are disposed at the bottom of the base (1), and the air floats (15) are used to contact the surface of the workbench.

Images