CN113820100A - Lens detection system for detecting lens - Google Patents
Lens detection system for detecting lens Download PDFInfo
- Publication number
- CN113820100A CN113820100A CN202111162292.5A CN202111162292A CN113820100A CN 113820100 A CN113820100 A CN 113820100A CN 202111162292 A CN202111162292 A CN 202111162292A CN 113820100 A CN113820100 A CN 113820100A
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- guide rail
- test card
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- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 195
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims description 17
- 238000007689 inspection Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000007306 turnover Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000003384 imaging method Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000000696 magnetic material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
Abstract
The invention discloses a lens detection system for detecting a lens, which comprises: a frame; the testing jig is used for mounting a lens and is arranged on the rack in a manner of moving along a first direction; the test card assembly comprises at least two test cards, the test card assembly is arranged opposite to the test fixture and movably arranged on the rack along a second direction, and the first direction is vertical to the second direction; and the test cards move along the second direction, so that the central points of at least two test cards in the test card assembly are sequentially summed with the optical axis weight of the lens. The test card and the lens are conveniently replaced, and the efficiency of detecting the imaging quality of the lens can be improved.
Description
Technical Field
The invention relates to the technical field of lens detection, in particular to a lens detection system for detecting a lens.
Background
With the development of science and technology, the demands of more and more electronic products on lenses with different specifications and quality specifications are continuously increased, and various detection demands are also increased due to the lens products with different specifications.
The detection of the lens needs to shoot a test card corresponding to each parameter respectively so as to perform image quality comprehensive evaluation on the image shot by the lens, wherein the image quality comprehensive evaluation relates to the test of parameters such as resolution. Particularly, in the detection process, the test card needs to be replaced to collect the next parameter information. Due to the difference between the specifications and positions of different test cards, after the test cards are replaced, the lens detection system needs to be adjusted according to the next test condition, but the test cards and the lenses are repeatedly replaced and adjusted, which not only affects the test accuracy, but also wastes resources and time.
Disclosure of Invention
The invention discloses a lens detection system for detecting a lens, which is used for conveniently replacing a test card and the lens and can improve the efficiency of detecting the imaging quality of the lens.
In order to achieve the purpose, the invention provides the following technical scheme:
a lens inspection system for inspecting lenses, comprising:
a frame;
the testing jig is used for mounting a lens and is arranged on the rack in a manner of moving along a first direction;
the test card assembly comprises at least two test cards, the test card assembly is arranged opposite to the test fixture and movably arranged on the rack along a second direction, and the first direction is vertical to the second direction;
and the test cards move along the second direction, so that the central points of at least two test cards in the test card assembly are sequentially summed with the optical axis weight of the lens.
The testing jig is movably arranged on the rack along a first direction, the lens to be detected is selected to be installed in the testing jig, when the lens is installed in the testing jig and tested, the testing card assembly is arranged opposite to the lens surface of the lens, the testing card assembly can be movably arranged on the rack along a second direction, the first direction is vertical to the second direction, and the testing card assembly comprises at least two testing cards. The test card is a color block map mapped by a shooting target, the detection of a plurality of parameters such as resolution and the like is included, and the lens acquires information of a plurality of parameters in shooting. When different test cards in the test card assembly need to be used, the different test cards can be used for shooting only by moving the test card assembly in the second direction so that the lens can obtain different detection parameter information, the step of repeatedly installing the test cards with different specifications for many times is reduced, and therefore the efficiency and the accuracy of the parameter information obtained in lens shooting are improved.
Drawings
Fig. 1 is a schematic perspective view of a lens detection system according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a test card assembly in a lens inspection system according to an embodiment of the present invention;
fig. 3 is a top view of a lens inspection system according to an embodiment of the present invention;
FIG. 4 is a schematic view of a lens assembly and a test fixture according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of the test fixture in fig. 4.
Icon: a-a lens; 1-a frame; 11-a slide rail; 2-testing the fixture; 21-a mobile platform; 22-a mounting mechanism; 221-a first rotating shaft; 222-a flip assembly; 2221-a handle; 2222-a base plate; 223-a fixed seat; 2231-a substrate; 2232-a second rotating shaft; 2233-baffle plate; 2233 a-an opening; 2234-fencing; 2235-locating posts; 3-a test card assembly; 31-a mounting plate; 32-a first test card; 33-a second test card; 34-a third test card; 35-a rectangular mounting area; 4-a lens assembly; 5-a first drive unit; 51-a first servo motor; 52-a first track assembly; 6-a second drive unit; 61-a second servo motor; 62-a second track assembly.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a lens detection system for detecting a lens, including: the test fixture comprises a machine frame 1, and a test fixture 2 and a test card assembly 3 which are installed on the machine frame 1.
Specifically, the test fixture 2 is used for mounting the lens a, and the test fixture is movable in a first direction relative to the chassis 1. The test card assembly 3 includes at least two test cards, for example the test card assembly 3 may include two different test cards or more than three different test cards. The test card assembly 3 is disposed opposite to the test fixture 2, and is movably disposed on the frame 1 along a second direction, where the first direction is perpendicular to the second direction.
The test card moves along the second direction, and when different test cards in the test card assembly 3 need to be used, the test card assembly 3 only needs to be moved in the second direction, so that the central points of at least two test cards in the test card assembly 3 are sequentially coincident with the optical axis of the lens a.
It should be noted that, a testing jig 2 is movably arranged on the frame 1 along a first direction, a lens a to be tested is selected to be installed in the testing jig 2, when the lens a is installed in the testing jig 2 and tested, a testing card assembly 3 is arranged opposite to the mirror surface of the lens a, the testing card assembly 3 is movably arranged on the frame 1 along a second direction, and the first direction is perpendicular to the second direction, and the testing card assembly 3 includes at least two testing cards. The test card is a shot target mapping test color block diagram, which comprises the detection of a plurality of parameters such as resolution ratio, and the lens A finishes the acquisition of a plurality of parameter information in shooting. When different test cards in the test card assembly 3 need to be used, different test cards can be used for shooting only by moving the test card assembly 3 in the second direction, so that the lens can acquire different detection parameter information, the step of repeatedly installing the test cards with different specifications for many times is reduced, and the efficiency and the accuracy of the parameter information acquired in lens shooting are improved.
Of course, fig. 1 is a frame structure of a camera bellows about a rack 1, when the lens detection system provided by the embodiment of the present invention operates, the inside of the camera bellows cannot be seen about a test card assembly 3 and a lens assembly, fig. 1 illustrates the rack 1 as the frame structure of the camera bellows for clearly showing the position relationship of each component, and specifically, the inside of a space formed by the rack 1 is an internal space of the camera bellows.
With reference to fig. 1, the test card assembly 3 further includes a mounting plate 31, a mounting area is formed on one side of the mounting plate 31 facing the test fixture, and at least two test cards are mounted in the mounting area, where the at least two test cards are specifically a first test card 32, a second test card 33, and a third test card 34, and specifications of the first test card 32, the second test card 33, and the third test card 34 are different.
Specifically, as shown in fig. 2, an installation area formed by one side of the installation plate 31 facing the test fixture 2 is a rectangular installation area 35, the first test card 32, the second test card 33 and the third test card 34 are all installed in the installation area, three planes of the first test card 32, the second test card 33 and the third test card 34 are coplanar, the planes formed by the first test card 32, the second test card 33 and the third test card 34 are parallel to the installation plate 31, and a distance between a center of the first test card 32 and edges of the rectangular installation area 35 along two sides of the second direction, a distance between a center of the second test card 33 and edges of the rectangular installation area 35 along two sides of the second direction, and a distance between a center of the third test card 34 and edges of the rectangular installation area 35 along two sides of the second direction are all equal. Therefore, the centers of the first test card 32, the second test card 33 and the third test card 34 can be guaranteed to be equal in height, so that when the detection lens acquires parameter information of different test cards, the first test card 32, the second test card 33 and the third test card 34 do not need to be adjusted in height, the test cards of different specifications can be replaced by only moving the test card assembly 3 in the second direction, and the efficiency and accuracy of the parameter information acquired in the shooting of the lens A are improved.
With reference to fig. 1 and fig. 3, a lens assembly 4 is disposed on the frame 1, and the lens assembly 4 is located between the test card assembly 3 and the test fixture 2, and an optical axis of the lens assembly 4 is collinear with an optical axis of the lens a. When any test card in the test card assembly 3 is in an initial station and the lens A is in a detection state, the optical axes of the lens assembly 4 and the lens A coincide with the central point of the test card. The second rail assembly 62 includes an outer rail disposed on the frame 1 and an inner rail slidably engaged with the outer rail disposed on the mounting plate 31. Alternatively, the outer guide rails are provided on the mounting plate 31 and the inner guide rails are provided on the frame 1. Of course, the inner guide rail can be understood as a slide block, and the outer guide rail can be understood as a rail having a guiding function, such as a slide rail.
Specifically, the specifications of the first test card 32, the second test card 33, and the third test card 34 are different, when the first test card 32, the second test card 33, or the third test card 34 needs to be selected, the second servo motor 61 drives the second guide rail assembly 62 to move the mounting plate 31, so as to select the test cards of different specifications, after the specification of the test card is selected, the first servo motor 51 drives the first driving assembly to move, so as to adjust the distance between the test fixture 2 and the test card, and according to actual needs, multiple sets of the test fixture 2 and the test cards can be adjusted by the action of the first servo motor 51, so that the lens a obtains multiple sets of data, where the lens a is connected with a terminal, and the terminal determines that the lens a obtains multiple items of parameter information, such as image resolution, of the test boards of different specifications in shooting. The specific resolution is a measure of the ability of the lens a to resolve the affected details.
When any test card in the test card assembly 3 is at an initial station, the optical axes of the lens assembly 4 and the lens a coincide with the central point of the first test card 32, the second test card 33 or the third test card 34, when the distance between the test fixture 2 and the lens assembly 4 needs to be adjusted, the test fixture 2 is driven to move along the first direction by the first driving unit 5, and the test fixture 2 is close to or far from the lens assembly 4 as required. The second driving unit 6 can drive the test card assembly 3 to move along the second direction, and when different test cards need to be used, the mounting plate 31 in the test card assembly 3 is driven to move back and forth along the second direction through the second driving unit 6, so that the test cards with different specifications can be replaced as required. And the first driving unit 5 and the second driving unit 6 are used in a matched manner, so that automatic control is realized, and the lens A can automatically acquire a plurality of items of parameter information in shooting.
The lens assembly 4 generally has two paired lenses or two paired lens groups, and the two paired lenses or two paired lens groups are mounted in the lens barrel, and the lens may be a common spherical lens or an aspherical lens. For example, the lens assembly 4 may be two lens sets of relay lenses (relay lenses).
Fig. 4 is a schematic structural diagram of a lens assembly 4 and a test fixture 2 according to an embodiment of the invention. As shown in fig. 4, the mounting mechanism 22 in fig. 4 is a structural diagram of a state in which the lens a is mounted, and a position diagram of a non-detection state, and the test fixture 2 includes a moving platform 21 and the mounting mechanism 22 mounted on the moving platform 21. The first driving unit 5 drives the moving platform 21 to move in the first direction.
The first driving unit 5 drives the moving platform 21 to move the mounting mechanism 22, and the mounting mechanism 22 and the moving platform 21 are fixed relatively, and the fixing manner may be a bolt connection or the like, and is not limited specifically herein. The first driving unit 5 is used for automatically driving the moving platform 21 to move along the first direction, the lens A adopts test cards with different specifications, and the first driving unit 5 is used for automatically adjusting the mounting mechanism 22 to be close to or far away from the lens component 4, so that different distances are adopted between the lens A and the test cards when the test cards with different specifications are adopted.
In a specific embodiment, the first driving unit 5 includes a first servo motor 51 and a first rail assembly 52 in transmission connection with the first servo motor 51, and the first rail assembly 52 extends along a first direction. The first rail assembly 52 includes an outer rail disposed on the frame 1 and an inner rail slidably engaged with the outer rail disposed on the movable platform 21.
Alternatively, the outer guide rail is provided on the surface on the side of the moving platform 21, and the inner guide rail is provided on the frame 1. Of course, in order to ensure the stability of the movement of the test fixture 2, the first guide rail assemblies 52 may be two sets, and when the first servo motor 51 drives the inner guide rail to move, so that the inner guide rail moves along the extending direction of the outer guide rail, the inner guide rail is disposed on the moving platform 21, and the moving platform 21 moves along the first direction relative to the rack 1. When the first servo motor 51 drives the outer rail to move, so that the outer rail moves along the extending direction of the inner rail, the outer rail is arranged on the movable platform 21, and the movable platform 21 moves along the first direction relative to the frame 1. The servo motor controls the moving platform 21 to move to different positions along the extending direction of the first guide rail assembly 52, so that the lens a can acquire multiple sets of parameter information in shooting. Of course, the inner guide rail can be understood as a slide block, and the outer guide rail can be understood as a rail having a guiding function, such as a slide rail.
Optionally, the second driving unit 6 includes a second servo motor 61 and a second guide rail assembly 62 in transmission connection with the second servo motor 61, and the second guide rail assembly 62 extends along the second direction. The second rail assembly 62 includes an outer rail disposed on the frame 1 and an inner rail slidably engaged with the outer rail disposed on the mounting plate 31. Alternatively, the outer guide rails are provided on the mounting plate 31 and the inner guide rails are provided on the frame 1. Of course, the inner guide rail can be understood as a slide block, and the outer guide rail can be understood as a rail having a guiding function, such as a slide rail.
Specifically, the specifications of the first test card 32, the second test card 33, and the third test card 34 are different, when the first test card 32, the second test card 33, or the third test card 34 needs to be selected, the second servo motor 61 drives the second guide rail assembly 62 to move the mounting plate 31, so as to select the test cards of different specifications, after the specification of the test card is selected, the first servo motor 51 drives the first driving assembly to move, so as to adjust the distance between the test fixture 2 and the test card, and according to actual needs, multiple sets of the test fixture 2 and the test cards can be adjusted by the action of the first servo motor 51, so that the lens a obtains multiple sets of data, where the lens a is connected with a terminal, and the terminal determines that the lens a obtains multiple items of parameter information, such as image resolution, of the test boards of different specifications in shooting. The specific resolution is a measure of the ability of the lens a to resolve the affected details.
As shown in fig. 4, the mounting mechanism 22 includes a first rotating shaft 221 extending in the second direction, and a turnover assembly 222 rotatably mounted on a surface of the moving platform 21 on a side facing away from the guide rail assembly along an axial direction of the first rotating shaft 221. As shown in fig. 5, the flipping unit 222 has a first station and a second station with respect to the moving platform 21, when the flipping unit 222 is at the first station, the bottom plate 2222 of the flipping unit 222 is parallel to the moving platform 21, and when the flipping unit 222 is at the second station, the bottom plate 2222 of the flipping unit 222 is perpendicular to the moving platform 21. When the flip assembly 222 is at the first station, the lens a is mounted on the fixing seat 223, and the fixing seat 223 is located on a side of the flip assembly 222 facing away from the moving platform 21.
Specifically, the turnover assembly 222 is turned over from the first station to the second station, manual operation is performed through the handle 2221 arranged on the bottom plate 2222, when the turnover assembly 222 is located at the first station, the lens a is mounted on the fixing seat 223, after the lens a is relatively fixed to the fixing seat 223, the handle 2221 is manually pulled to enable the turnover assembly 222 to be turned over by taking the first rotating shaft 221 as a rotating shaft, namely, the lens a is in a detection state, and at the moment, the optical axis of the lens a, the center of any test card in the lens assembly 4 and the test card assembly 3 coincide.
The fixing base 223 for mounting the lens a specifically includes a substrate 2231, a second rotating shaft 2232 extending in a first direction, and a baffle 2233 rotatably mounted on the substrate 2231 along an axial direction of the second rotating shaft 2232. A receiving space for receiving the lens a is formed between the barrier 2233 and the substrate 2231, and the barrier 2233 cooperates with the substrate 2231 to fix the lens a. Of course, in order to secure an accommodation space for accommodating the lens a, a barrier 2234 may be further provided between the barrier 2233 and the substrate 2231, so as to increase a distance between the barrier 2233 and the substrate 2231, thereby facilitating the lens a to be placed.
Specifically, the substrate 2231 is formed with a groove that fits the barrier 2233, and the barrier 2233 is formed with an opening 2233a for exposing the lens a lens. In order to ensure the stability of the lens a, a plurality of positioning posts 2235 are disposed on the substrate 2231 around the circumference of the slot to stably clamp the lens a.
In one embodiment, base 2231 is magnetically engaged with baffle 2233. Specifically, the substrate 2231 and the baffle 2233 may be opposite magnets, or may be magnets having magnetic properties to the substrate 2231, and the baffle 2233 may be a magnetic material that can be attracted to the magnets, or the baffle 2233 may be a magnetic material that can be attracted to the magnets, and the substrate 2231 may be a magnetic material that can be attracted to the magnets.
The following specific working process of the lens detection system provided by the embodiment of the invention is as follows:
firstly, the baffle 2233 of the fixing seat 223 is opened, the lens a is placed in the groove of the substrate 2231, and then the baffle 2233 is closed, and the lens a is fixed; then, the handle 2221 is manually operated to turn the turning assembly 222 together with the fixing seat 223, so that the mirror surface of the lens a faces the test card assembly 3; then the second driving unit 6 starts to drive the first test card 32 in the test card assembly 3, so that the center of the first test card 32 overlaps with the optical axis of the lens A and the lens assembly 4; the first driving unit 5 starts to drive the test fixture 2 to move so as to enable the first test card to have a specific distance with the lens A; lens a begins to acquire parameter information for the first test card 32. The above steps are that the lens a finishes acquiring multiple items of parameter information from the first test card 32, and then the second driving unit 6 starts to drive other test cards in the test card assembly 3 to sequentially perform the above steps, which is not described herein again.
In the lens inspection system according to the embodiment of the present invention, since the lens element 4 is fixed with respect to the frame 1, and the distance between the lens element 4 and the test card element 3 is fixed, the distance between the lens surface a of the lens a and the lens element 4 needs to be adjusted in order to meet the test conditions corresponding to different test cards during the test process. The distance between the lens assembly 4 and the test card assembly 3 is, for example, 720mm to 725mm, and may be selected as 721mm, 722mm, 723mm, 724mm or 725mm as required. When the first test card 32 is selected, the first driving unit 5 drives the test fixture 2 provided with the lens A to move along the first direction, and the distance between the lens surface of the lens A and the lens assembly 4 is adjusted to be 50-52 mm; when the second test card 33 is selected, the first driving unit 5 drives the test fixture 2 provided with the lens A to move along the first direction, and the distance between the lens surface of the lens A and the lens assembly 4 is adjusted to be 37mm-38 mm; when the third test card 34 is selected, the first driving unit 5 drives the test fixture 2 mounted with the lens a to move along the first direction, and the distance between the lens surface of the lens a and the lens assembly 4 is adjusted to 40mm-42 mm. Lens A can be selected as unmanned aerial vehicle lens A, etc.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A lens inspection system for inspecting lenses, comprising:
a frame;
the testing jig is used for mounting the lens and is arranged on the rack in a manner of moving along a first direction;
the test card assembly comprises at least two test cards, the test card assembly is arranged opposite to the test fixture and movably arranged on the rack along a second direction, and the first direction is vertical to the second direction;
and the test cards move along the second direction, so that the central points of the at least two test cards in the test card assembly are sequentially summed with the optical axis weight of the lens.
2. The lens inspection system of claim 1, further comprising: the lens assembly is arranged on the frame, and the optical axis of the lens assembly is collinear with the optical axis of the lens.
3. The lens inspection system of claim 2, further comprising: the first driving unit is used for driving the test fixture to move along the first direction; a second drive unit for driving the test card assembly to move in the second direction.
4. The lens inspection system of claim 3, wherein the test fixture includes a moving platform and a mounting mechanism mounted on the moving platform;
the first driving unit drives the moving platform to move along the first direction.
5. The lens detection system of claim 4, wherein the first driving unit comprises a first servo motor and a first rail assembly in transmission connection with the first servo motor, and the first rail assembly extends along the first direction;
the first guide rail assembly comprises an outer guide rail and an inner guide rail in sliding fit with the outer guide rail, the outer guide rail is arranged on the rack, and the inner guide rail is arranged on the mobile platform;
or the outer guide rail is arranged on the surface of one side of the mobile platform, and the inner guide rail is arranged on the rack.
6. The lens detection system according to claim 5, wherein the mounting mechanism includes a first rotating shaft extending in the second direction, and a flip assembly rotatably mounted on a surface of the moving platform on a side facing away from the rail assembly in a direction of an axis of the first rotating shaft; the turnover assembly is provided with a first station and a second station relative to the moving platform, when the turnover assembly is positioned at the first station, a bottom plate of the turnover assembly is parallel to the moving platform, and when the turnover assembly is positioned at the second station, the bottom plate of the turnover assembly is vertical to the moving platform;
when the overturning assembly is located at the first station, the lens is installed on a fixed seat, and the fixed seat is located on one side, away from the moving platform, of the overturning assembly.
7. The lens detection system according to claim 6, wherein the fixing base includes a base plate, a second rotating shaft extending along the first direction, and a baffle rotatably mounted on the base plate along an axis direction of the second rotating shaft;
an accommodating space for accommodating the lens is formed between the baffle and the substrate, and the baffle is matched with the substrate to fix the lens.
8. The lens inspection system according to claim 7, wherein the substrate is formed with a groove that fits the bezel, and the bezel is formed with an opening for exposing the mirror surface of the lens.
9. The lens inspection system of claim 7, wherein the substrate is magnetically engaged with the bezel.
10. The lens detection system of claim 3, wherein the second driving unit comprises a second servo motor and a second rail assembly in transmission connection with the second servo motor, and the second rail assembly extends along the second direction;
the second guide rail assembly comprises an outer guide rail and an inner guide rail in sliding fit with the outer guide rail, the outer guide rail is arranged on the rack, and the inner guide rail is arranged on the mounting plate;
or the outer guide rail is arranged on the mounting plate, and the inner guide rail is arranged on the rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111162292.5A CN113820100A (en) | 2021-09-30 | 2021-09-30 | Lens detection system for detecting lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111162292.5A CN113820100A (en) | 2021-09-30 | 2021-09-30 | Lens detection system for detecting lens |
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| CN113820100A true CN113820100A (en) | 2021-12-21 |
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| CN202111162292.5A Pending CN113820100A (en) | 2021-09-30 | 2021-09-30 | Lens detection system for detecting lens |
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