Lens margin detection device

Abstract

This utility model belongs to the field of lens inspection technology and discloses a lens margin detection device, which includes a base, a collimation measuring component, an image acquisition component, and a driving component. A displacement stage is provided on the base for placing the lens to be inspected and for moving the lens in the X, Y, and Z directions. The collimation measuring component is spaced above the displacement stage in the Z direction and faces the lens to be inspected. The image acquisition component is disposed on the displacement stage and includes an image acquisition element and a positioning element. The image acquisition element is positioned opposite the imaging end of the lens to be inspected, and the height of the positioning element is adjustable, allowing the lens to be inspected to be pressed against the image acquisition element. The driving component is connected to the lens to be inspected and is configured to drive the movement of a group within the lens after it has been focused. This lens margin detection device can detect the dead-point margin of a lens and is simple to operate with high detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lens inspection technology, and in particular to a lens margin detection device. Background Technology

[0002] The integrated lens can automatically zoom, focus, and adjust the light inlet, allowing for a longer and wider shooting distance. It can quickly zoom and accurately focus as the environment and the monitored target move and change, always maintaining accurate focus and clear image quality. It is widely used in various remote video monitoring applications such as urban security, intelligent transportation, forest fire prevention, aviation and maritime, or low-light environments.

[0003] The integrated lens assembly has a relatively complex structure, consisting of a fixed group and a moving group. The moving group can move back and forth to adjust the focus until the lens is in focus. The moving group is driven primarily by nuts on the group frame that engage with a motor screw, which in turn drives the motor to rotate and move the group. The lens design includes an optical focus position and a dead spot position. The focus position varies in each lens, resulting in different distances to the dead spot. Therefore, it is necessary to measure the dead spot margin. Measuring the dead spot margin ensures that the lens will not misfocus during use, meeting the user's testing requirements. However, existing devices for measuring lens dead spot margin are time-consuming to align the lens center with the measurement center and have poor lens fixation, impacting testing efficiency.

[0004] Therefore, there is an urgent need for a lens margin detection device to solve the above problems. Utility Model Content

[0005] According to one aspect of the present invention, a lens margin detection device is provided, which can be used to detect the dead spot margin of a lens, and is simple to operate and has high detection efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A lens allowance detection device for detecting the dead spot allowance of a lens, the lens allowance detection device comprising:

[0008] A base, on which a displacement stage is provided, the displacement stage is used to place the lens to be tested, and can drive the lens to be tested to move in the X, Y and Z directions respectively;

[0009] The collimation measuring element is positioned at intervals above the displacement stage in the Z direction and is directly opposite the lens to be tested;

[0010] An image acquisition component is disposed on the displacement stage and includes an image acquisition element and a positioning element. The image acquisition element is disposed opposite to the imaging end of the lens to be tested. The height of the positioning element is adjustable and the positioning element can press the lens to be tested against the image acquisition element.

[0011] A driving component, connected to the lens under test, is configured to drive group movement within the lens under test after the lens under test has been focused.

[0012] Optionally, at least two positioning elements are provided, and the two positioning elements are symmetrically arranged on both sides of the lens to be tested. One end of the positioning element is fixed to the image acquisition element, the positioning element extends along the Z direction and its length is adjustable, and the other end of the positioning element is connected to the side of the lens to be tested away from the image acquisition element.

[0013] Optionally, the positioning component includes a guide post and a pressure post. The guide post is fixed to the image acquisition component and extends along the Z direction. The pressure post is slidably connected to the guide post along its length. The pressure post is provided with a pressing part, which extends toward the center of the lens to be tested and can press against the end face of the lens to be tested that is away from the image acquisition component.

[0014] Optionally, the guide post includes a guide rod and a limiting head. The guide rod is disposed on the image acquisition device, and the limiting head is disposed at the end of the guide rod away from the image acquisition device. The diameter of the limiting head is larger than the diameter of the guide rod.

[0015] The positioning component also includes an elastic element, the pressure post is sleeved outside the guide rod, and the elastic element is clamped between the pressure post and the limiting head.

[0016] Optionally, the pressure column has a through-hole and a sliding hole, the diameter of the sliding hole is larger than the diameter of the sleeve hole, the connection between the sliding hole and the sleeve hole forms a limiting step, the elastic element is sleeved on the guide rod, and the two ends of the elastic element abut against the limiting step and the limiting head respectively.

[0017] Optionally, the pressing portion is disposed at the end of the pressing post opposite to the image acquisition element; and / or,

[0018] The pressure column is also provided with an operating part, which extends in a direction away from the lens to be tested and is configured for the operator to hold.

[0019] Optionally, the image acquisition device includes a first mounting plate, a second mounting plate, and a support column. The first mounting plate and the second mounting plate are parallel and spaced apart. The support column is connected between the first mounting plate and the second mounting plate. A first chip is disposed on the first mounting plate, and the first chip faces the lens to be detected. A second chip is disposed on the second mounting plate, and the second mounting plate is disposed on the displacement stage.

[0020] Optionally, the image acquisition device further includes a third mounting plate, which is located on the side of the first mounting plate and the second mounting plate and is connected to the first mounting plate and the second mounting plate respectively. A third chip is disposed on the side of the third mounting plate opposite to the first mounting plate and the second mounting plate, and the third chip is electrically connected to the first chip and the second chip respectively.

[0021] Optionally, the first chip has a positioning hole corresponding to the bottom positioning post of the lens to be tested.

[0022] Optionally, the base is provided with a limiting base and a support rod, the support rod is disposed on the base along the Z direction, the limiting base is positioned on the base, the displacement stage is mounted on the limiting base, and the collimation measuring element is mounted on the end of the support rod away from the base.

[0023] The beneficial effects of this utility model are:

[0024] This utility model provides a lens margin detection device that can detect the dead-point margin of a lens, ensuring that the user will not experience focusing issues when using the lens, thus meeting the user's requirements. The lens margin detection device includes a base, a collimation measuring component, an image acquisition component, and a drive component. The base provides mounting positions for the collimation measuring component, image acquisition component, and drive component, ensuring support stability and measurement accuracy. A displacement stage is provided on the base, which can move the lens under test in the X, Y, and Z directions. The collimation measuring component is spaced above the displacement stage in the Z direction and directly opposite the lens under test. Through the cooperation of the displacement stage and the collimation measuring component, the center of the lens under test can be quickly aligned with the center of the collimation measuring component, improving work efficiency. The image acquisition component is set on the displacement stage and includes an image acquisition element and a positioning element. The image acquisition element is positioned opposite the imaging end of the lens under test to facilitate image acquisition; the positioning element presses the lens under test against the image acquisition element to prevent lens movement and ensure detection accuracy. The drive assembly is connected to the lens under test and is configured to drive the movement of a group within the lens after the lens under test has achieved sharp focus. Once the lens is in sharp focus, the lens has moved to its dead-point position when the number of drive steps of the drive assembly remains constant. The dead-point margin of the lens under test can be calculated using the difference in the number of drive steps. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the lens margin detection device provided in this embodiment of the utility model;

[0027] Figure 2 This is a partial structural schematic diagram of the lens to be tested provided in an embodiment of this utility model;

[0028] Figure 3 This is an exploded view of the lens margin detection device provided in this embodiment of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the image acquisition component provided in an embodiment of the present invention;

[0030] Figure 5 This is a cross-sectional view of the image acquisition component provided in an embodiment of this utility model.

[0031] In the picture:

[0032] 100. Lens to be tested; 101. FPC assembly; 102. Group;

[0033] 1. Base; 11. Displacement stage; 12. Limiting base; 13. Support rod; 14. Connecting rod;

[0034] 2. Collimation measuring components;

[0035] 3. Image acquisition component; 31. Image acquisition element; 311. First mounting plate; 312. Second mounting plate; 313. Support column; 314. Third mounting plate; 315. First chip; 3151. Positioning hole; 316. Second chip; 317. Third chip; 32. Positioning element; 321. Guide column; 3211. Guide rod; 3212. Limiting head; 322. Pressing column; 3221. Pressing part; 3222. Socket hole; 3223. Sliding hole; 3224. Limiting step; 3225. Operating part. Detailed Implementation

[0036] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 utility model is in use. They are used only for the convenience of describing this utility model and for 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 utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this utility model, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0044] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0045] This embodiment provides a lens margin detection device, which can detect the dead spot margin of the lens to ensure that the user will not experience focus problems when using the lens, thus meeting the user's usage requirements.

[0046] like Figure 1 As shown, the lens margin detection device includes a base 1, a collimation measuring component 2, an image acquisition component 3, and a driving component (not shown).

[0047] The base 1 provides mounting positions for the collimation measuring component 2, image acquisition component 3, and drive component, ensuring support stability and measurement accuracy. A displacement stage 11 is mounted on the base 1, which holds the lens 100 to be tested and can move the lens 100 in the X, Y, and Z directions. The collimation measuring component 2 is positioned above the displacement stage 11 in the Z direction and directly opposite the lens 100. The displacement stage 11 can adjust the center position of the lens 100 to align with the measurement center of the collimation measuring component 2, reducing the alignment time during each test. Furthermore, the displacement stage 11 can adjust the height of lenses 100 at different heights to facilitate dead-point margin detection. Through the cooperation of the displacement stage 11 and the collimation measuring component 2, rapid alignment of the center of the lens 100 and the center of the collimation measuring component 2 can be achieved, effectively improving operational efficiency.

[0048] Specifically, a limiting base 12 is provided on the base 1. The limiting base 12 is positioned on the base 1, and the displacement stage 11 is mounted on the limiting base 12. In this embodiment, the limiting base 12 includes a base plate and a mounting platform. The mounting platform is disposed on the base, and the mounting platform has holes for locking with the displacement stage 11. The displacement stage 11 is locked and fixed to the mounting platform by fasteners. The base has through holes and countersunk holes around its perimeter, and the base is fixed to the base 1 by fasteners, adhesive, or modeling clay.

[0049] More specifically, the base 1 is also provided with a support rod 13 and a connecting rod 14. The support rod 13 is provided on the base 1 along the Z direction, and the connecting rod 14 is connected to the support rod 13 in the horizontal direction. The collimation measuring element 2 is installed on the end of the connecting rod 14 away from the support rod 13.

[0050] In this embodiment, the displacement stage 11 is a three-axis displacement stage, and the collimation measuring component 2 is a collimator. Both the three-axis displacement stage and the collimator are existing technologies, and their structure and operating principles will not be described in detail here.

[0051] Continuing, as Figures 2-5As shown, the image acquisition component 3 is disposed on the displacement stage 11 and includes an image acquisition element 31 and a positioning element 32. The image acquisition element 31 is disposed opposite to the imaging end of the lens 100 to facilitate the acquisition of the image of the lens 100. The height of the positioning element 32 is adjustable, and the positioning element 32 can press the lens 100 to be tested against the image acquisition element 31 to prevent the lens 100 from shaking and ensure detection accuracy. The driving component is connected to the lens 100 to be tested and is configured to drive the group 102 within the lens 100 to move after the lens 100 to be tested is in focus. In this embodiment, the driving component is a driving box. The gold finger position of the FPC component 101 of the lens 100 to be tested is connected to the chip position of the driving box for driving focus. After the focus is clear, when the driving step number of the driving box remains unchanged, the lens 100 to be tested has moved to the dead point position. The dead point margin of the lens 100 to be tested can be calculated by the step difference displayed on the driving box.

[0052] Optionally, at least two positioning elements 32 are provided, symmetrically arranged on both sides of the lens 100 to be tested. One end of the positioning element 32 is fixed to the image acquisition element 31, the positioning element 32 extends along the Z direction and its length is adjustable, and the other end of the positioning element 32 is connected to the side of the lens 100 to be tested away from the image acquisition element 31. The arrangement of multiple positioning elements 32 can ensure the balance of pressure on the lens 100 to be tested, thereby ensuring the stability of the lens 100 when it is fixed.

[0053] Specifically, refer to Figures 3-5 The positioning component 32 includes a guide post 321 and a pressing post 322. The guide post 321 is fixedly connected to the image acquisition component 31 and extends along the Z direction. The pressing post 322 is slidably connected to the guide post 321 along its length direction, and a pressing part 3221 is provided on the pressing post 322, which extends toward the center of the lens 100 to be inspected. When the pressing post 322 slides along the guide post 321 toward the image acquisition component 31, the pressing part 3221 presses against the end face of the lens 100 to be inspected away from the image acquisition component 31, thereby fixing the position of the lens 100 to be inspected. When the pressing post 322 slides along the guide post 321 away from the image acquisition component 31, the pressing part 3221 releases the lens 100 to be inspected, so that the operator can replace the lens 100 to be inspected.

[0054] More specifically, the guide post 321 includes a guide rod 3211 and a limiting head 3212. The guide rod 3211 is disposed on the image acquisition component 31, and the limiting head 3212 is disposed at the end of the guide rod 3211 away from the image acquisition component 31. The diameter of the limiting head 3212 is larger than the diameter of the guide rod 3211. The positioning component 32 also includes an elastic element. The pressing post 322 is sleeved on the guide rod 3211, and the elastic element is sandwiched between the pressing post 322 and the limiting head 3212. When the pressing post 322 slides along the guide post 321 in a direction away from the image acquisition component 31, the elastic element is compressed. After the lens to be tested 100 is installed, the pressing post 322 is pressed down and abuts against the lens to be tested 100 under the action of the elastic force of the elastic element. In this embodiment, the elastic element can be selected as a spring.

[0055] More specifically, the pressure post 322 has a through-hole 3222 and a sliding hole 3223. The diameter of the sliding hole 3223 is larger than the diameter of the sleeve hole 3222. The connection between the sliding hole 3223 and the sleeve hole 3222 forms a limiting step 3224. The elastic element is sleeved on the guide rod 3211, and both ends of the elastic element abut against the limiting step 3224 and the limiting head 3212, respectively. With this arrangement, the limiting head 3212 can slide within the sliding hole 3223, and the elastic element is also located within the sliding hole 3223, which helps to protect the elastic element and prevent external impurities from entering the elastic element and causing jamming.

[0056] Preferably, the pressing part 3221 is disposed at one end of the pressure post 322 away from the image acquisition member 31. The pressing part 3221 is disposed at the highest point of the pressure post 322, which facilitates the pressing part 3221 to press against the lens 100 to be tested.

[0057] Optionally, the pressure post 322 is further provided with an operating part 3225, which extends in a direction away from the lens 100 to be tested. The operating part 3225 is easy for the operator to hold, so as to realize the sliding of the pressure post 322 on the guide post 321.

[0058] Continue to refer to Figure 4 and Figure 5The image acquisition device 31 includes a first mounting plate 311, a second mounting plate 312, and a support column 313. The first mounting plate 311 and the second mounting plate 312 are parallel and spaced apart. The support column 313 connects the first mounting plate 311 and the second mounting plate 312. A first chip 315 is disposed on the first mounting plate 311, facing the lens 100 to be tested. A second chip 316 is disposed on the second mounting plate 312, which is mounted on the displacement stage 11. Specifically, the first mounting plate 311 has a mounting groove adapted to the shape of the first chip 315, and the first chip 315 is fixed in the mounting groove by edge adhesive application. Since the support column 313 supports the first mounting plate 311 and the second mounting plate 312 to a certain mounting height, the second chip 316 is fixed to the side of the second mounting plate 312 facing the first mounting plate 311 by copper column support. The second mounting plate 312 also has through holes, and the second mounting plate 312 is fixed to the displacement stage 11 by fasteners. The displacement stage 11 can drive the second mounting plate 312, the first mounting plate 311 and the lens to be tested 100 to move synchronously.

[0059] Optionally, the image acquisition device 31 further includes a third mounting plate 314. The third mounting plate 314 is located on the side of the first mounting plate 311 and the second mounting plate 312, and is connected to the first mounting plate 311 and the second mounting plate 312 respectively. A third chip 317 is disposed on the side of the third mounting plate 314 opposite to the first mounting plate 311 and the second mounting plate 312. The third chip 317 is electrically connected to the first chip 315 and the second chip 316 respectively. This third chip 317 is a power supply board and needs to be attached to the outside for easy connection of wires.

[0060] Preferably, the first chip 315 has a positioning hole 3151 corresponding to the bottom positioning post of the lens 100 to be tested, so as to distinguish the placement direction of the lens 100 to be tested and prevent the lens 100 to be tested from failing due to errors.

[0061] The method of using the lens margin detection device provided in this embodiment is as follows:

[0062] First, assemble the device as shown in the diagram. Then, position the lens 100 to be tested into the positioning hole 3151 corresponding to the first chip 315 using the bottom positioning post, and fix it using the pressure post 322. Next, connect the FPC component 101 of the lens 100 to be tested through the drive box for focusing and clearing. The lens can be adjusted to the center position using the displacement stage 11. After clearing the focus, drive the lens to the front and rear dead point positions. Confirm the dead point margin based on the number of steps in the drive box to see if it meets the user's requirements.

[0063] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A lens allowance detection device, characterized in that, The lens dead center clearance detection device includes: A base (1) is provided with a displacement stage (11), which is used to place the lens to be tested (100) and can drive the lens to be tested (100) to move in the X direction, Y direction and Z direction respectively; The collimation measuring element (2) is spaced above the displacement stage (11) in the Z direction and is directly opposite the lens (100) to be tested; An image acquisition component (3) is disposed on the displacement stage (11) and includes an image acquisition component (31) and a positioning component (32). The image acquisition component (31) is disposed opposite to the imaging end of the lens to be tested (100). The height of the positioning component (32) is adjustable. The positioning component (32) can press the lens to be tested (100) against the image acquisition component (31). A drive assembly connected to the lens under test (100) is configured to drive the group (102) within the lens under test (100) to move after the lens under test (100) is in focus.

2. The lens allowance detection device according to claim 1, characterized in that, At least two positioning elements (32) are provided. The two positioning elements (32) are symmetrically arranged on both sides of the lens to be tested (100). One end of the positioning element (32) is fixed to the image acquisition element (31). The positioning element (32) extends along the Z direction and its length is adjustable. The other end of the positioning element (32) is connected to the side of the lens to be tested (100) away from the image acquisition element (31).

3. The lens allowance detection device according to claim 2, characterized in that, The positioning component (32) includes a guide post (321) and a pressure post (322). The guide post (321) is fixed to the image acquisition component (31) and extends along the Z direction. The pressure post (322) is slidably connected to the guide post (321) along the length direction. The pressure post (322) is provided with a pressing part (3221). The pressing part (3221) extends toward the center of the lens to be tested (100). The pressing part (3221) can press against the end face of the lens to be tested (100) away from the image acquisition component (31).

4. The lens allowance detection device according to claim 3, characterized in that, The guide post (321) includes a guide rod (3211) and a limiting head (3212). The guide rod (3211) is disposed on the image acquisition device (31), and the limiting head (3212) is disposed at the end of the guide rod (3211) away from the image acquisition device (31). The diameter of the limiting head (3212) is larger than the diameter of the guide rod (3211). The positioning element (32) also includes an elastic element. The pressure post (322) is sleeved outside the guide rod (3211), and the elastic element is sandwiched between the pressure post (322) and the limiting head (3212).

5. The lens allowance detection device according to claim 4, characterized in that, The pressure column (322) has a through-hole (3222) and a sliding hole (3223) that are connected. The diameter of the sliding hole (3223) is larger than the diameter of the sleeve hole (3222). The connection between the sliding hole (3223) and the sleeve hole (3222) forms a limiting step (3224). The elastic element is sleeved on the guide rod (3211). The two ends of the elastic element abut against the limiting step (3224) and the limiting head (3212) respectively.

6. The lens allowance detection device according to claim 3, characterized in that, The pressing part (3221) is disposed at one end of the pressing post (322) opposite to the image acquisition element (31); and / or, The pressure column (322) is also provided with an operating part (3225), which extends in a direction away from the lens (100) to be tested and is configured for the operator to hold.

7. The lens allowance detection device according to any one of claims 1-6, characterized in that, The image acquisition device (31) includes a first mounting plate (311), a second mounting plate (312), and a support column (313). The first mounting plate (311) and the second mounting plate (312) are parallel and spaced apart. The support column (313) is connected between the first mounting plate (311) and the second mounting plate (312). A first chip (315) is provided on the first mounting plate (311), and the first chip (315) is directly opposite the lens (100) to be tested. A second chip (316) is provided on the second mounting plate (312), and the second mounting plate (312) is disposed on the displacement stage (11).

8. The lens allowance detection device according to claim 7, characterized in that, The image acquisition device (31) further includes a third mounting plate (314), which is located on the side of the first mounting plate (311) and the second mounting plate (312) and is connected to the first mounting plate (311) and the second mounting plate (312) respectively. A third chip (317) is provided on the side of the third mounting plate (314) away from the first mounting plate (311) and the second mounting plate (312), and the third chip (317) is electrically connected to the first chip (315) and the second chip (316) respectively.

9. The lens allowance detection device according to claim 7, characterized in that, The first chip (315) has a positioning hole (3151) corresponding to the bottom positioning post of the lens to be tested (100).

10. The lens allowance detection device according to any one of claims 1-6, characterized in that, The base (1) is provided with a limiting base (12) and a support rod (13). The support rod (13) is provided on the base (1) along the Z direction. The limiting base (12) is positioned on the base (1). The displacement stage (11) is installed on the limiting base (12). The collimation measuring element (2) is installed on the end of the support rod (13) away from the base (1).

Images