Appearance detection device for lens and lens

Abstract

The utility model belongs to the field of lens appearance detection, and discloses a lens and lens appearance detection device, which is characterized in that a plurality of positioning components are annularly distributed on a first mounting surface of a turntable at equal intervals, and an industrial camera and a lens module facing the first mounting surface are arranged right opposite to each detection station; an industrial camera and a lens module facing the second mounting surface of the turntable are arranged on the back surface of one detection station; the number of the LED lamp assemblies is equal to the number of lenses in the lens, each LED lamp assembly corresponds to the position of one detection station, and the LED lamp assemblies face the first mounting surface; the rotary table is arranged adjacent to the discharging station and located outside the projection range of the rotary table, the rotary table adsorbs and fixes the lens to provide a rotating station, an industrial camera and a lens module are arranged perpendicular to the rotating station, and the material moving module is used for moving the lens on the discharging station to the rotating station. The device reduces the detection process, improves the detection efficiency, reduces the misjudgment rate, and reduces the comprehensive cost.

Description

Technical Field

[0001] The utility model belongs to the field of lens appearance detection, and in particular relates to a lens and a lens appearance detection device. Background Art

[0002] The process flow of optical cold processing mainly includes blank processing, forming processing, rough grinding, fine grinding, polishing, centering and edging, coating, and gluing. Before coating, the appearance of the lens must be fully inspected. In reality, the appearance inspection is mainly carried out by manual plus microscope. However, the inspection method relying on manual plus microscope has too many uncertain factors, low inspection efficiency, and certain requirements on the skills of personnel in using microscopes and judging scratches and pitting and other appearance defects. There are many overall processes, high misjudgment rate, and high comprehensive cost. Utility Model Content

[0003] The utility model aims to provide a device for detecting the appearance of a lens and a mirror, which can reduce the detection process, improve the detection efficiency, reduce the misjudgment rate and reduce the overall cost.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A lens and lens appearance inspection device, the lens and lens appearance inspection device comprising a turntable, a turntable, an industrial camera and lens module, an LED lamp assembly and a material transfer module;

[0006] The turntable provides a first mounting surface and a second mounting surface. A plurality of positioning components are arranged at equal intervals on the first mounting surface. The positioning components are used to position the lens. The positions of two adjacent positioning components among the plurality of positioning components are taken as the loading station and the unloading station, and the positions of the remaining positioning components are taken as the inspection stations. An industrial camera and a lens module facing the first mounting surface are arranged opposite to each inspection station, and an industrial camera and a lens module facing the second mounting surface are arranged on the back of one of the inspection stations;

[0007] The number of the LED light assemblies is equal to the number of lenses inside the lens, each LED light assembly corresponds to the position of a detection station, and the LED light assembly faces the first mounting surface;

[0008] The turntable is arranged adjacent to the unloading station and outside the projection range of the turntable. The turntable adsorbs and fixes the lens to provide a rotating station. An industrial camera and lens module are arranged perpendicular to the rotating station. The material transfer module is used to move the lens on the unloading station to the rotating station.

[0009] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0010] Preferably, the positioning assembly consists of two symmetrically installed V-shaped positioning blocks, each of which is provided with a strip hole, and the V-shaped positioning block is fixed to the turntable through the strip hole.

[0011] Preferably, the loading station and the unloading station are respectively provided with corresponding optical fiber sensors, the optical fiber sensors are arranged adjacent to the turntable, and the detection range of the optical fiber sensors is toward the lens on the positioning component.

[0012] Preferably, the industrial cameras and lens modules corresponding to the inspection stations other than the inspection stations equipped with LED lamp assemblies are connected with an annular shadowless light source, and a light source baffle is provided around the circumference of the annular shadowless light source.

[0013] Preferably, the industrial camera and lens module include an industrial camera and liquid zoom telecentric lens module, and an industrial camera and CCTV lens module.

[0014] Preferably, the industrial camera and lens module corresponding to the inspection station equipped with the LED light assembly are an industrial camera and a liquid zoom telecentric lens module;

[0015] The same inspection station is not equipped with an LED light assembly and an industrial camera and lens module at the back at the same time. The industrial camera and lens module at the back are industrial cameras and liquid zoom telecentric lens modules. The industrial camera and lens module directly opposite the inspection station equipped with the industrial camera and lens module at the back are industrial cameras and CCTV lens modules.

[0016] Except for the inspection station with LED light components and the inspection station with industrial cameras and lens modules on the back, the industrial cameras and lens modules corresponding to the remaining inspection stations are industrial cameras and liquid zoom telecentric lens modules;

[0017] The industrial camera and lens module arranged perpendicular to the rotating station are industrial cameras and CCTV lens modules.

[0018] Preferably, the second mounting surface of the turntable is connected with a rotating motor module for driving the turntable to rotate, the rotating motor module comprises a stepping motor and a tension reducer, and the stepping motor is connected to the turntable via the tension reducer.

[0019] Preferably, the turntable comprises a rotating suction block, a hollow motor and a vacuum generator;

[0020] One of the two opposite surfaces of the rotating suction block is provided with a groove, and the other surface is provided with a raised connecting column. The rotating suction block is provided with an air hole penetrating the groove and the raised connecting column. The raised connecting column is connected to the hollow power shaft of the hollow motor, and the hollow motor is connected to the vacuum generator through an air pipe.

[0021] Preferably, a coaxial light source is provided between the lens on the rotating station and the industrial camera and lens module arranged perpendicular to the rotating station.

[0022] The appearance inspection device for a lens and a lens provided by the utility model has the following beneficial effects compared with the prior art:

[0023] 1. The present invention can automatically detect dirt and scratches on multiple lenses and the appearance of the lens from all directions, saving labor costs and detecting one lens in seconds, thus greatly improving the efficiency of lens and appearance detection.

[0024] 2. Simultaneously realize appearance inspection of the upper and lower surfaces and peripheral sides of the lens, as well as appearance inspection of the internal lenses of the lens, to improve the completeness of inspection, improve inspection efficiency, and reduce overall costs.

[0025] 3. It integrates a large number of photo models, which can accurately distinguish and judge whether the lens is dirty or scratched, which is a great improvement compared to the high misjudgment rate of manual judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a first-view stereoscopic diagram of the appearance inspection device for the lens and the lens of the utility model;

[0027] Figure 2 A second perspective stereogram of the appearance inspection device for the lens and the lens of the utility model;

[0028] Figure 3 It is a top view of the appearance inspection device of the lens and the lens of the present invention.

[0029] In the diagram: 1. Positioning assembly; 2. Turntable; 3. Fiber optic sensor; 4. Mounting base; 5. Industrial camera and lens module; 6. Coaxial light source; 7. Light source baffle; 8. LED light assembly; 9. Universal bracket; 10. Stepper motor; 11. Adjustment bracket; 12. Hollow motor; 13. Rotating suction block; 14. Annular shadowless light source. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that when a component is referred to as being “connected” to another component, it may be directly connected to the other component or there may be a central component; when a component is referred to as being “fixed” to another component, it may be directly fixed to the other component or there may be a central component.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0033] At present, the appearance inspection of existing lenses and mirrors is done manually by dividing the process into steps and judging through a microscope. The overall process is multi-step, the efficiency is low, the misjudgment rate is high, and the overall cost is high. In view of this, the utility model discloses a lens and mirror appearance inspection device, such as Figure 1-3 As shown, it includes a turntable 2, a turntable, an industrial camera and lens module 5, an LED light assembly 8 and a material transfer module.

[0034] The turntable 2 provides a first mounting surface and a second mounting surface. A plurality of positioning components 1 are arranged at equal intervals on the first mounting surface. The positioning components 1 are used to position the lens (i.e., the lens to be tested). For the turntable 2 placed horizontally as in the present embodiment, the first mounting surface is the upper surface, and the second mounting surface is the lower surface. The number of positioning components 1 is set according to the appearance characteristics of different lenses to be tested. The present embodiment takes a lens to be tested that contains two lenses as an example, and sets the number of positioning components 1 to 6, and the 6 positioning components 1 are fixedly distributed at 60 degrees.

[0035] The positions of two adjacent positioning components 1 among the plurality of positioning components 1 are taken as the loading station and the unloading station, and the positions of the remaining positioning components 1 are taken as the detection station. Figure 3 The position a shown is used as a loading station, the position f is used as an unloading station, and the positions b, c, d and e are used as inspection stations.

[0036] Opposite to each inspection station is an industrial camera and lens module 5 facing the first mounting surface, and on the back of one inspection station is an industrial camera and lens module 5 facing the second mounting surface. In this embodiment, the inspection station at position b is used to inspect the appearance characteristics of the lens on the upper surface of the lens, the inspection station at position e is used to inspect the appearance characteristics of the lens on the upper and lower surfaces of the lens, and the inspection stations at positions c and d are used to inspect the appearance characteristics of the lens inside the lens.

[0037] In order to improve the acquisition of the appearance feature image of the lens inside the lens, the present embodiment introduces an LED lamp assembly 8, and the number of LED lamp assemblies 8 is equal to the number of lenses inside the lens, that is, the present embodiment is provided with two LED lamp assemblies 8, each LED lamp assembly 8 corresponds to the position of a detection station, and the LED lamp assembly 8 faces the first mounting surface.

[0038] The LED light assembly 8 in this embodiment shines strong light from the upper side to the center of the lens to be inspected, which solves the problem that it is difficult to detect dirt and scratches on the multi-layer lens inside the lens. In addition, this embodiment installs the LED light assembly 8 through a universal bracket 9, which is used to adjust the height and angle of the LED light assembly 8. On the premise of achieving the adjustment function, this embodiment does not limit the structure of the universal bracket 9. For example, the rod M6 can be installed through the rod base, and the ring M6 can be connected to the rod M6 through the universal joint M6, and finally the LED light assembly 8 is fixed through the ring M6.

[0039] In order to improve the completeness of the acquisition of the appearance characteristics of the lens, a turntable is provided in this embodiment. The turntable is arranged adjacent to the unloading station and outside the projection range of the turntable 2. The turntable adsorbs and fixes the lens to provide a rotation station. An industrial camera and lens module 5 are arranged perpendicular to the rotation station. The material transfer module is used to move the lens on the unloading station to the rotation station. The turntable can be used to realize the rotation of the lens, and after the rotation angle of the lens changes, the corresponding appearance characteristic image is obtained through the industrial camera and the lens module 5 to realize the detection of the periphery of the lens. The material transfer module can be a mechanical structure with a grabbing and releasing function such as a robotic arm and a robotic claw, which is not limited in this embodiment.

[0040] This embodiment automatically acquires the appearance feature images of the lens and the lens, so as to complete the detection of dirt and scratches on the lens and the lens through the appearance feature images, greatly reducing the cost of manual inspection. The inspection range covers the upper surface, lower surface and peripheral side of the lens and the lens inside the lens. The inspection is highly complete, and multiple images can be obtained for the same inspection surface, greatly improving the inspection accuracy.

[0041] The positioning assembly 1 of this embodiment consists of two symmetrically installed V-shaped positioning blocks. The lens clamping position is set in the space formed by the two V-shapes, and the V-shaped positioning block is provided with a strip hole. The V-shaped positioning block is fixed to the turntable 2 through the strip hole to adapt to lenses of different specifications.

[0042] It is easy to understand that the lens to be inspected on the loading station needs to be moved from the external component to the loading station by an external moving mechanism. This embodiment does not limit the external moving mechanism and the external component, that is, this embodiment can be used in combination with existing external components and has high flexibility of use.

[0043] In this embodiment, the loading station and the unloading station are respectively provided with corresponding optical fiber sensors 3, and the optical fiber sensor 3 is arranged adjacent to the turntable 2, and the detection range of the optical fiber sensor 3 is toward the lens on the positioning assembly 1. The optical fiber sensor 3 is used to detect whether there is a lens on the loading station or the unloading station. It is easy to understand that the specific processing logic of the detection signal of the optical fiber sensor 3 is not the focus of improvement of this application, and can be selected and set according to actual needs. The optical fiber sensor 3 of this embodiment is installed by adjusting the bracket 11, and the adjusting bracket 11 can adjust the installation height and angle of the optical fiber sensor 3. On the premise of meeting the adjustment requirements, the structure of the adjusting bracket 11 is not restricted.

[0044] In order to effectively obtain the appearance feature image of the lens or mirror, two different types of industrial cameras and lens modules 5 are used in this embodiment, one is an industrial camera and a liquid zoom telecentric lens module, and the other is an industrial camera and a CCTV lens module. Through the cooperation of the two types of industrial cameras and lens modules 5, an effective appearance feature image is extracted.

[0045] Specifically, in this embodiment, the industrial camera and lens module 5 corresponding to the detection station of the LED light assembly (i.e., the detection station where the position c and the position d are located) is an industrial camera and a liquid zoom telecentric lens module. That is, in this embodiment, an industrial camera and a liquid zoom telecentric lens module are used to collect the appearance feature image of the lens inside the lens to be detected.

[0046] The same inspection station is not provided with the LED light assembly 8 and the industrial camera and lens module 5 at the back at the same time. The industrial camera and lens module 5 at the back is an industrial camera and a liquid zoom telecentric lens module. That is, the present embodiment uses an industrial camera and a liquid zoom telecentric lens module to collect the appearance feature image of the bottom lens of the lens to be inspected.

[0047] The industrial camera and lens module 5 directly opposite to the detection station with the industrial camera and lens module 5 on the back (i.e., the detection station at position e) is an industrial camera and CCTV lens module; except for the detection station with the LED light assembly (i.e., the detection station at position c and position d) and the detection station with the industrial camera and lens module 5 on the back (i.e., the detection station at position e), the industrial camera and lens module 5 corresponding to the remaining detection stations (i.e., the detection station at position b) are industrial cameras and liquid zoom telecentric lens modules. That is, this embodiment uses industrial cameras and CCTV lens modules and industrial cameras and liquid zoom telecentric lens modules to collect the appearance feature images of the upper surface lens of the lens.

[0048] The industrial camera and lens module 5 arranged perpendicular to the rotating station is an industrial camera and CCTV lens module. That is, this embodiment uses an industrial camera and CCTV lens module to collect the appearance feature image of the periphery of the lens to be detected.

[0049] When acquiring the appearance feature image of the periphery of the lens to be inspected, in order to complete the acquisition of a complete circle of the appearance feature image of the periphery, in this embodiment, the lens to be inspected is placed on a turntable, and the appearance feature image of the periphery is acquired after the turntable is rotated at different angles.

[0050] In this embodiment, the turntable includes a rotating suction block 13, a hollow motor 12 and a vacuum generator (not shown in the figure). One of the two opposite surfaces of the rotating suction block 13 is provided with a groove, and the other surface is provided with a protruding connecting column. The rotating suction block 13 is provided with an air hole passing through the groove and the protruding connecting column. The protruding connecting column is connected to the hollow power shaft of the hollow motor 12, and the hollow motor 12 is connected to the vacuum generator through an air pipe.

[0051] The groove of the turntable contacts the lens to be tested to provide a rotating position. When the lens to be tested is placed in the groove, the lens to be tested is embedded in the groove. At this time, the vacuum generator works to extract the air inside the groove, forming a vacuum inside the groove, thereby achieving adsorption and fixation of the lens to be tested.

[0052] In order to reduce the interference of external ambient light during image acquisition, in this embodiment, the industrial camera and lens module corresponding to the detection station (i.e., the detection station where the position b and the position d are located) other than the detection station with the LED light assembly are connected with an annular shadowless light source 14, and a light source baffle 7 is provided around the circumference of the annular shadowless light source 14. At the same time, a coaxial light source 6 is provided between the lens to be detected on the rotating station (when there is no lens to be detected, it should be understood as the area where the lens to be detected is located when there is a lens to be detected) and the industrial camera and lens module 5 arranged perpendicular to the rotating station.

[0053] Figure 2The position indicated by the middle number is the electrical connection part of the annular shadowless light source 14 protruding from the light source baffle 7, and the center of the main part of the annular shadowless light source 14 corresponds to the center of the industrial camera and lens module 5. The light source baffle 7 is used to surround the annular shadowless light source 14 to prevent the light of the annular shadowless light source 14 from leaking from the side and affecting the operation of other industrial cameras and lens modules 5. The light source baffle 7 can be an integral cylindrical shape, or it can be composed of multiple pieces to form a cylindrical shape.

[0054] In this embodiment, the second mounting surface of the turntable 2 is connected with a rotating motor module for driving the turntable 2 to rotate. The rotating motor module includes a stepper motor 10 and a tension reducer. The stepper motor 10 is connected to the turntable 2 through the tension reducer. The stepper motor 10 controls the turntable 2 to rotate a fixed angle through the tension reducer. In this embodiment, the turntable 2 rotates 60 degrees at a time.

[0055] In this embodiment, the components that need to be fixed are connected to the platform plate (not shown in the figure) through the mounting seat 4 or the adjustment bracket 11, wherein the length of the mounting seat 4, whether there is a strip hole, etc. can be selected according to the needs. For example, in this embodiment, the industrial camera and lens module 5 corresponding to the position b and position e are fixed to the platform plate through the mounting seat 4 including a long bracket and an L-shaped bracket, and the industrial camera and lens module 5 corresponding to the position c and position d are fixed to the platform plate through the mounting seat 4 including a short bracket and an L-shaped bracket, and the long bracket and the short bracket are provided with strip holes, which are connected to the platform plate through the strip holes to facilitate height adjustment. The industrial camera and lens module 5 are connected to the mounting seat 4 through a camera fixing short block, and the annular shadowless light source 14 is connected to the mounting seat 4 through a light fixing bracket. The stepper motor 10 is connected to the platform plate through the mounting seat 4 including an L-shaped bracket, and the other components that need to be fixed are similarly arranged and are not described in detail in this embodiment.

[0056] When the device is working, the optical fiber sensor 3 detects that there is a lens to be detected at position a, and the stepper motor 10 drives the turntable 2 to rotate counterclockwise by 60 degrees. The lens to be detected at position a rotates to position b, and the industrial camera and liquid zoom telecentric lens module above it take 5 photos to detect dirt and scratches on the upper surface of the lens; the stepper motor 10 drives the turntable 2 to rotate counterclockwise by 60 degrees, and the lens at position b rotates to position c, and the industrial camera and liquid zoom telecentric lens module above it take 5 photos to detect dirt and scratches on the first layer of lenses inside the lens; the stepper motor 10 rotates counterclockwise by 60 degrees again, and the industrial camera and liquid zoom telecentric lens module at position d take 5 photos to detect dirt on the second layer of lenses inside the lens. and scratches; then rotate counterclockwise 60 degrees in sequence, the industrial camera and CCTV lens module at position e take a photo to detect dirt and scratches on the upper surface of the lens, and at the same time, the industrial camera and liquid zoom telecentric lens module at position e take 5 photos to detect dirt and scratches on the lens at the bottom of the lens; finally, rotate counterclockwise 60 degrees, the lens at position e rotates to position f, the optical fiber sensor 3 detects the lens to be detected at position f, the clamp moves the lens at position f to the rotating station, turns on the vacuum generator, and adsorbs the lens on the rotating suction block 13. Every time the turntable rotates 60 degrees, the industrial camera and CCTV lens module on the side take a photo. It rotates 360 degrees in total, and takes 6 photos to detect dirt and scratches on the outer surface of the side of the lens.

[0057] The present invention drives the turntable 2 to rotate 60 degrees counterclockwise every 3 seconds through a stepper motor 10, and synchronously realizes 5 workstations to take photos at the same time, detects dirt and scratches on the lens and appearance, and realizes ultra-high detection efficiency of a single device. In order to correctly identify whether the turntable 2 rotates one circle, this embodiment is provided with a number and position of sensing iron sheets corresponding to the positioning component 1 on the turntable 2, and a sensor facing the second mounting surface of the turntable 2 is installed through a reset sensing bracket, and the position of the turntable 2 is detected through the cooperation of the sensor and the sensing iron sheet. This embodiment integrates a large number of photo models to achieve accurate distinction and judgment of whether the lens is dirty or scratched, solving the pain point that it is difficult to distinguish between dirt and scratches on the lens in the current market.

[0058] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the attached claims.

Claims

1. A device for detecting the appearance of a lens and a lens, It is characterized in that The appearance inspection device for the lens and the lens comprises a turntable, a turntable, an industrial camera and a lens module, an LED lamp assembly and a material transfer module; The turntable provides a first mounting surface and a second mounting surface. A plurality of positioning components are arranged at equal intervals on the first mounting surface. The positioning components are used to position the lens. The positions of two adjacent positioning components among the plurality of positioning components are taken as the loading station and the unloading station, and the positions of the remaining positioning components are taken as the inspection stations. An industrial camera and a lens module facing the first mounting surface are arranged opposite to each inspection station, and an industrial camera and a lens module facing the second mounting surface are arranged on the back of one of the inspection stations; The number of the LED light assemblies is equal to the number of lenses inside the lens, each LED light assembly corresponds to the position of a detection station, and the LED light assembly faces the first mounting surface; The turntable is arranged adjacent to the unloading station and outside the projection range of the turntable. The turntable adsorbs and fixes the lens to provide a rotating station. An industrial camera and lens module are arranged perpendicular to the rotating station. The material transfer module is used to move the lens on the unloading station to the rotating station.

2. The appearance inspection device for a lens and a lens as claimed in claim 1, It is characterized in that The positioning assembly is composed of two symmetrically installed V-shaped positioning blocks, each of which is provided with a strip hole, and the V-shaped positioning block is fixed to the turntable through the strip hole.

3. The appearance inspection device for a lens and a lens as claimed in claim 1, It is characterized in that The loading station and the unloading station are respectively provided with corresponding optical fiber sensors, the optical fiber sensors are arranged adjacent to the turntable, and the detection range of the optical fiber sensors faces the lens on the positioning component.

4. The appearance inspection device for a lens and a lens as claimed in claim 1, It is characterized in that The industrial cameras and lens modules corresponding to the inspection stations other than the inspection station with the LED lamp assembly are connected with an annular shadowless light source, and a light source baffle is provided around the circumference of the annular shadowless light source.

5. The appearance inspection device for a lens and a lens as claimed in claim 1, It is characterized in that The industrial camera and lens module include an industrial camera and liquid zoom telecentric lens module, and an industrial camera and CCTV lens module.

6. The appearance inspection device for a lens and a lens as claimed in claim 5, It is characterized in that The industrial camera and lens module corresponding to the inspection station equipped with LED light components are industrial cameras and liquid zoom telecentric lens modules; The same inspection station is not equipped with an LED light assembly and an industrial camera and lens module at the back at the same time. The industrial camera and lens module at the back are industrial cameras and liquid zoom telecentric lens modules. The industrial camera and lens module directly opposite the inspection station equipped with the industrial camera and lens module at the back are industrial cameras and CCTV lens modules. Except for the inspection station with LED light components and the inspection station with industrial cameras and lens modules on the back, the industrial cameras and lens modules corresponding to the remaining inspection stations are industrial cameras and liquid zoom telecentric lens modules; The industrial camera and lens module arranged perpendicular to the rotating station are industrial cameras and CCTV lens modules.

7. The appearance inspection device for a lens and a lens as claimed in claim 1, It is characterized in that The second mounting surface of the turntable is connected with a rotating motor module for driving the turntable to rotate. The rotating motor module includes a stepping motor and a tension reducer. The stepping motor is connected to the turntable via the tension reducer.

8. The appearance inspection device for a lens and a lens as claimed in claim 1, It is characterized in that The turntable includes a rotating suction block, a hollow motor and a vacuum generator; One of the two opposite surfaces of the rotating suction block is provided with a groove, and the other surface is provided with a raised connecting column. The rotating suction block is provided with an air hole penetrating the groove and the raised connecting column. The raised connecting column is connected to the hollow power shaft of the hollow motor, and the hollow motor is connected to the vacuum generator through an air pipe.

9. The appearance inspection device for a lens and a lens as claimed in claim 1, It is characterized in that A coaxial light source is arranged between the lens on the rotating station and the industrial camera and lens module arranged perpendicular to the rotating station.

Images