Lens inspection system

Abstract

The application provides a lens detection system, which comprises a rotating disc, a feeding and discharging module, a first detection module, a second detection module and a third detection module. The rotating disc is used for carrying the lens and can rotate to drive the lens to move. The feeding and discharging module is used for feeding the lens to the rotating disc or discharging the lens from the rotating disc. The first detection module is used for foreign matter detection of the lens. The second detection module is used for imaging quality detection of the lens. The third detection module is used for outer surface detection of the lens. The feeding and discharging module, the first detection module, the second detection module and the third detection module are sequentially arranged at intervals of 90 degrees around the rotating disc. The above lens detection system can realize the purpose of one-time completion of multiple detections through the feeding and discharging module, the first detection module, the second detection module and the third detection module for respective detection of the lens. The rotating disc is used for driving the lens to move, so that the purpose of automatic detection is achieved, and the work efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical detection, in particular to a lens detection system. BACKGROUND

[0002] At present, in the camera lens detection process of electronic product type, most of them are through artificial taking and placing materials and sorting, which leads to low test efficiency, so only sampling detection can be carried out. In addition, most of the equipment can only complete one kind of detection, such as the equipment for detecting imaging quality cannot complete other detections such as foreign matter at the same time. The compatibility of various models is poor, and the replacement of equipment is needed to complete all detections, which leads to the problem of high replacement cost. SUMMARY

[0003] Therefore, it is necessary to provide a lens detection system which can automatically complete multiple detections, so as to improve the detection efficiency and reduce the cost.

[0004] In an embodiment of the present application, a lens detection system is provided, which comprises a turntable, a feeding and discharging module, a first detection module, a second detection module and a third detection module. The turntable is used to carry the lens and can rotate to drive the lens to move. The feeding and discharging module is used to feed the lens to the turntable or discharge the lens from the turntable. The first detection module comprises a first grabbing assembly and a first detection assembly. The first grabbing assembly is used to grab the lens on the turntable and move the lens to a first position. The first detection assembly is used to detect the lens at the first position for foreign matter. The second detection module comprises a second grabbing assembly and a second detection assembly. The second grabbing assembly is used to grab the lens on the turntable and move the lens to a second position. The second detection assembly is used to detect the lens at the second position for imaging quality. The third detection module is arranged at a third position above the turntable and is used to detect the lens moved to below the third position for outer surface. The feeding and discharging module, the first detection module, the second detection module and the third detection module are sequentially arranged at an interval of 90 degrees around the turntable.

[0005] The lens detection system described above detects the lens for foreign matter, imaging quality and outer surface through the feeding and discharging module, the first detection module, the second detection module and the third detection module, so as to achieve the purpose of completing multiple detections at one time. The feeding and discharging module, the first detection module, the second detection module and the third detection module are arranged around the turntable, the turntable rotates to drive the lens to move, so as to achieve the purpose of automatic detection.

[0006] In some embodiments, the first detection assembly comprises a first light source, a first sensor and a first transfer platform. The first light source is located above the first sensor. The first sensor is connected to the first transfer platform. The first transfer platform is used to drive the first sensor to move horizontally. The first grabbing assembly can drive the lens to move horizontally between the first light source and the first sensor, so that the center of the first sensor, the center of the lens and the center of the first light source are on the same axis.

[0007] In some embodiments, the second detection assembly comprises a second light source, a second sensor, a second moving platform and a film, the second light source is located above the film, the second sensor is located below the film, the second sensor is connected to the second moving platform, the second moving platform can drive the second sensor to move horizontally, the second grabbing assembly can drive the lens to move horizontally between the film and the second sensor, so that the center of the second sensor, the center of the lens, the center of the film and the center of the second light source are on the same axis, and the second moving platform can also drive the second sensor to move vertically to obtain the projection of the lens on the film.

[0008] In some embodiments, the second detection assembly further comprises a relay mirror, which can be moved below the film to increase the distance of detection of the second sensor.

[0009] In some embodiments, the third detection module comprises a camera for scanning the lens moved below the third position to detect the outer surface of the lens.

[0010] In some embodiments, the feeding and discharging module, the first grabbing assembly and the second grabbing assembly are provided with suction cups for adsorbing the lens.

[0011] In some embodiments, the turntable is provided with four carrier positions at intervals of 90 degrees around the turntable, and each carrier position is used to carry a lens. Each carrier position can be sequentially circulated through the feeding and discharging module, the first detection module, the second detection module and the third detection module.

[0012] In some embodiments, each carrier position is provided with two carriers, each carrier is used to carry a lens, and the feeding and discharging module can synchronously transfer two lenses to two carriers in one carrier position, and the first detection module, the second detection module and the third detection module can synchronously detect two lenses on two carriers in one carrier position.

[0013] In some embodiments, the feeding and discharging module comprises a feeding moving assembly, a feeding manipulator, a discharging moving assembly and a discharging manipulator. The feeding manipulator is connected to the feeding moving assembly, the feeding moving assembly is used to drive the feeding manipulator to move to feed the lens to the turntable; the discharging manipulator is connected to the discharging moving assembly, and the discharging moving assembly is used to drive the discharging manipulator to move to discharge the lens from the turntable.

[0014] In some embodiments, the second grabbing assembly can drive the lens to move in a range of 150-650 millimeters from the film, and the film can make the detection field angle range of the lens less than or equal to 130 degrees. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 FIG. 1 is a schematic view of a lens detection system in an embodiment of the present application.

[0016] Fig. 2 A schematic view of a first detection assembly in an embodiment of the present application.

[0017] Fig. 3 A schematic view of a second detection assembly in an embodiment of the present application.

[0018] Explanation of main element symbols

[0019] Lens detection system 100

[0020] Lens 200

[0021] Rotating disc 10

[0022] Loading and unloading module 20

[0023] First detection module 30

[0024] First grabbing assembly 31

[0025] First detection assembly 32

[0026] First light source 32a

[0027] First sensor 32b

[0028] First transfer platform 32c

[0029] Second detection module 40

[0030] Second grabbing assembly 41

[0031] Second detection assembly 42

[0032] Second light source 42a

[0033] Second sensor 42b

[0034] Second transfer platform 42c

[0035] Film 42d

[0036] Relay mirror 42e

[0037] Glass plate 42f

[0038] Third detection module 50

[0039] Camera 51 DETAILED DESCRIPTION

[0040] The technical solutions of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0041] It should be noted that when a component is referred to as being "on" another component, it can be directly on the other component or intervening components can also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component, or intervening components can be present. When a component is referred to as being "disposed on" another component, it can be directly disposed on the other component, or intervening components can be present. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0043] An embodiment of the present application provides a lens detection system, which comprises a rotating disc, a loading and unloading module, a first detection module, a second detection module and a third detection module. The rotating disc is used to carry the lens and can rotate to move the lens. The loading and unloading module is used to load the lens onto the rotating disc or unload the lens from the rotating disc. The first detection module comprises a first grabbing assembly and a first detection assembly. The first grabbing assembly is used to grab the lens on the rotating disc and move the lens to a first position. The first detection assembly is used to detect foreign matter in the lens at the first position. The second detection module comprises a second grabbing assembly and a second detection assembly. The second grabbing assembly is used to grab the lens on the rotating disc and move the lens to a second position. The second detection assembly is used to detect imaging quality of the lens at the second position. The third detection module is arranged at a third position above the rotating disc and is used to detect the outer surface of the lens moved below the third position. The loading and unloading module, the first detection module, the second detection module and the third detection module are sequentially arranged around the rotating disc. As an exemplary example, in order to facilitate the layout, the loading and unloading module, the first detection module, the second detection module and the third detection module are sequentially arranged at an interval of about 90 degrees around the rotating disc.

[0044] The lens detection system described above detects the lens for foreign matter, imaging quality and outer surface through the loading and unloading module, the first detection module, the second detection module and the third detection module, thereby achieving the purpose of completing multiple detections at one time. The loading and unloading module, the first detection module, the second detection module and the third detection module are arranged around the rotating disc, and the rotating disc rotates to move the lens, thereby achieving the purpose of automatic detection.

[0045] Some embodiments of the present application will be described in detail with reference to the drawings. The following embodiments and features of the embodiments can be combined with each other without conflict.

[0046] Referring to Figs. 1 to 3 In an embodiment, a lens detection system 100 is provided for detecting a lens. The lens detection system 100 comprises a turntable 10, a loading and unloading module 20, a first detection module 30, a second detection module 40 and a third detection module 50. The turntable 10 is used to carry the lens 200. The loading and unloading module 20, the first detection module 30, the second detection module 40 and the third detection module 50 are arranged around the turntable 10 at intervals of 90 degrees. The turntable 10 can rotate 360 degrees and drive the lens 200 to move in a circle, so that the lens 200 passes through the loading and unloading module 20, the first detection module 30, the second detection module 40 and the third detection module 50 in turn. The loading and unloading module 20 is used to pick up the lens 200 to be detected from a tray and load the lens 200 onto the turntable 10, or pick up the lens 200 after detection from the turntable 10 and unload the lens 200 from the turntable 10 to the tray. The first detection module 30 comprises a first grabbing assembly 31 and a first detection assembly 32. The first grabbing assembly 31 is used to grab the lens 200 on the turntable 10 and move the lens 200 to a first position. The first detection assembly 32 is used to detect the degree of dirt in the lens 200 at the first position, i.e. to detect the degree of dirt in the lens 200. The second detection module 40 comprises a second grabbing assembly 41 and a second detection assembly 42. The second grabbing assembly 41 is used to grab the lens 200 on the turntable 10 and move the lens 200 to a second position. The second detection assembly 42 is used to detect the imaging quality of the lens 200 at the second position, i.e. to detect the degree of clarity of the lens 200. The third detection module 50 is arranged at a third position above the turntable 10 and is used to detect the outer surface of the lens 200 moving directly below the third position, i.e. to detect whether the lens 200 has scratches or other appearance abnormalities on the surface.

[0047] In some embodiments, the first detection assembly 32 includes a first light source 32a, a first sensor 32b, and a first moving platform 32c. The first light source 32a is fixed in position. The first sensor 32b is located below the first light source 32a. The first sensor 32b is connected to the first moving platform 32c. The first moving platform 32c is used to drive the first sensor 32b to move horizontally. The first grabbing assembly 31 is capable of driving the lens 200 to move horizontally between the first light source 32a and the first sensor 32b, i.e. the lens 200 is located between the first light source 32a and the first sensor 32b. The first moving platform 32c and the first grabbing assembly 31 are capable of making the center of the first sensor 32b, the center of the lens 200, and the center of the first light source 32a on the same axis, thereby completing the focus calibration. Then the first sensor 32b performs foreign matter detection on the image of the lens 200 through the test software. As an exemplary example, the movement of the first moving platform 32c and the first grabbing assembly 31 is micron level. The first light source 32a is a D50 standard light source. The first moving platform 32c includes an electric sliding table of XY axis.

[0048] In some embodiments, the second detection assembly 42 includes a second light source 42a, a second sensor 42b, a second moving platform 42c, and a film 42d. The second light source 42a is fixed in position. The film 42d is located below the second light source 42a. The second sensor 42b is located below the film 42d. The second sensor 42b is connected to the second moving platform 42c. The second moving platform 42c is capable of driving the second sensor 42b to move horizontally and vertically. The second grabbing assembly 41 is capable of driving the lens 200 to move horizontally between the film 42d and the second sensor 42b, i.e. the lens 200 is located between the film 42d and the second sensor 42b. The second moving platform 42c and the second grabbing assembly 41 are capable of making the center of the second sensor 42b, the center of the lens 200, the center of the film 42d, and the center of the second light source 42a on the same axis, thereby completing the focus calibration. When the second moving platform 42c drives the second sensor 42b to move vertically, the second sensor 42b is capable of gradually approaching the lens 200 from far to near (i.e. the second sensor 42b moves from bottom to top), so that the image of the lens 200 is from blurred to clear to blurred again, while obtaining the projection of the lens 200 on the film 42d, and comparing the projection with the scale on the film 42d, thereby completing the imaging quality detection of the lens 200 when simulating close-range imaging. As an exemplary example, the film 42d is attached to the upper surface of a glass plate 42f, the film 42d is a film to reduce cost, and has SFR, MTF or bar chart as resolution card, which can provide auxiliary tests such as actual shooting vertical resolution and horizontal resolution, finally calculate to obtain the imaging characteristic curve of the lens 200, and then evaluate the imaging quality of the lens 200. The second light source 42a is a D65 standard light source.

[0049] In some embodiments, the second grabbing component 41 is capable of driving the lens 200 to adjust the position within a distance L between the glass plate 42f and the film 42d in a range of 150-650 mm to meet the clarity detection for near vision simulation of the lens 200; the area of the film 42d is capable of making the detection field angle of the lens 200 less than or equal to 130 degrees to meet the wide-angle test of the lens.

[0050] In some embodiments, the second detection component 42 further comprises a relay lens 42e. The relay lens 42e is capable of moving to a position between the film 42d and the lens 200 for detection zooming of the second sensor 42b, so that the second detection component 42 is capable of simulating the clarity detection of the lens 200 under the condition of infinity.

[0051] In some embodiments, the second grabbing component 41 comprises an XYZ three-axis electric slide and a three-axis rotating shaft to drive the lens 200 to move and rotate in space, so as to ensure that the lens 200 is aligned above the center of the second sensor 42b, thereby completing high-precision focusing calibration to improve the detection quality.

[0052] In some embodiments, the third detection component 50 comprises a camera 51. The camera 51 is fixed in position for scanning the lens 200 below the third position for detecting whether the lens 200 has appearance defects such as dirt and microscopic scratches. As an exemplary example, the camera 51 is an AOI optical detection camera.

[0053] In some embodiments, the feeding and discharging component 20, the first grabbing component 30 and the second grabbing component 40 are each provided with a suction cup (not shown in the figure) to adsorb the lens product with the lens 200 to realize the movement of the lens 200. In other embodiments, the lens 200 can also be moved by clamping with a clamping jaw.

[0054] In some embodiments, the turntable 10 is provided with four carrier positions at intervals of 90 degrees around the turntable 10, and each carrier position is used to carry one or more lenses 200. The turntable 10 is capable of rotating by 360 degrees, so that each carrier position can be circulated and sequentially pass through the feeding and discharging component 20, the first detection component 30, the second detection component 40 and the third detection component 50, thereby completing various detections.

[0055] Further, in some embodiments, each carrier position is provided with two carriers (not shown in the figure), each of which is used to carry one lens 200, i.e., two lenses 200 can be carried at each carrier position. The loading and unloading module 20 can simultaneously perform loading and unloading operations on two lenses 200, i.e., simultaneously transfer two lenses 200 to be detected to two carriers in one carrier position, or simultaneously transfer two detected lenses 200 from two carriers to a tray. The first detection module 30 has two sets of first grabbing assemblies 31 and first detection assemblies 32 arranged side by side; the second detection module 40 has two sets of second grabbing assemblies 41 and second detection assemblies 42 arranged side by side; the third detection module 50 has two sets of cameras 51 arranged side by side, so that the first detection module 30, the second detection module 40 and the third detection module 50 can also simultaneously detect two lenses 200 on two carriers in one carrier position, thereby improving the detection efficiency. In other embodiments, other numbers of lenses 200, such as three or five, etc., can also be simultaneously detected.

[0056] In some embodiments, the loading and unloading module 20 includes a loading transfer assembly, a loading robot, a unloading transfer assembly and a unloading robot (not shown in the figure). The loading robot is connected to the loading transfer assembly. The loading transfer assembly is used to drive the loading robot to move, so as to drive the lenses 200 to be loaded onto the turntable 10. The unloading robot is connected to the unloading transfer assembly, and the unloading transfer assembly is used to drive the unloading robot to move, so as to drive the lenses 200 to be unloaded from the turntable 10 to a tray.

[0057] The above lens detection system 100 performs foreign matter detection, imaging quality detection and outer surface detection on the lenses 200 through the loading and unloading module 20, the first detection module 30, the second detection module 40 and the third detection module 50, realizes the purpose of completing multiple detections at one time, has strong versatility and low replacement cost; the above lens detection system 100 is arranged around the turntable 10 through the loading and unloading module 20, the first detection module 30, the second detection module 40 and the third detection module 50, the turntable 10 rotates to drive the lenses 200 to move, realizes the purpose of fully automatic detection, and improves the work efficiency.

[0058] In addition, those skilled in the art should understand that the above embodiments are only used to illustrate the present application, and are not used as a limitation on the present application, and as long as the above embodiments are appropriately changed and changed within the scope of the spirit of the present application, they fall within the scope of the disclosure of the present application.

Claims

1. A lens inspection system characterized by, The application relates to a lens detection device. The device comprises: a rotating disc for carrying lenses, which can rotate and drive the lenses to move; an upper and lower feeding module for feeding the lenses to the rotating disc or discharging the lenses from the rotating disc; a first detection module, which comprises a first grabbing assembly and a first detection assembly, the first grabbing assembly is used for grabbing the lenses on the rotating disc and moving the lenses to a first position, and the first detection assembly is used for detecting foreign matters in the lenses at the first position; a second detection module, which comprises a second grabbing assembly and a second detection assembly, the second grabbing assembly is used for grabbing the lenses on the rotating disc and moving the lenses to a second position, and the second detection assembly is used for detecting imaging quality of the lenses at the second position; and a third detection module, which is arranged at a third position above the rotating disc and is used for detecting the outer surface of the lenses moving below the third position; the upper and lower feeding module, the first detection module, the second detection module and the third detection module are sequentially arranged around the rotating disc; the second detection assembly comprises a second light source, a second sensor, a second moving platform and a film, the second light source is arranged above the film, the second sensor is arranged below the film, the second sensor is connected to the second moving platform, the second moving platform can drive the second sensor to horizontally move, the second grabbing assembly can drive the lenses to horizontally move between the film and the second sensor, so that the center of the second sensor, the center of the lenses, the center of the film and the center of the second light source are on the same axis, and the second moving platform can also drive the second sensor to vertically move, so as to obtain the projection of the lenses on the film; 2. The lens detection system of claim 1, wherein: the second detection assembly further comprises a relay mirror, which can move below the film and is used for detecting the second sensor.

3. The lens testing system of claim 1, wherein: The first detection assembly comprises a first light source, a first sensor and a first moving platform, the first light source is arranged above the first sensor, the first sensor is connected to the first moving platform, the first moving platform is used for driving the first sensor to horizontally move, and the first grabbing assembly can drive the lenses to horizontally move between the first light source and the first sensor, so that the center of the first sensor, the center of the lenses and the center of the first light source are on the same axis.

4. The lens testing system of claim 1, wherein: The third detection module comprises a camera, which is used for scanning the lenses moving below the third position, so as to detect the outer surface of the lenses.

5. The lens testing system of claim 1, wherein: The upper and lower feeding module, the first grabbing assembly and the second grabbing assembly are all provided with suction cups, which are used for adsorbing the lenses. Four carrier positions are arranged at intervals of 90 degrees around the rotating disc, the carrier positions are used for carrying the lenses, and each carrier position can sequentially pass through the upper and lower feeding module, the first detection module, the second detection module and the third detection module in circulation.

6. The lens testing system of claim 5, wherein: Each of the carrier positions is provided with two carriers, each of which is used to carry one of the lenses, the loading and unloading module is capable of synchronously transferring two of the lenses to two carriers in one of the carrier positions respectively, and the first detection module, the second detection module and the third detection module are capable of synchronously detecting two of the lenses on two carriers in one of the carrier positions.

7. The lens testing system of claim 1, wherein: The loading and unloading module comprises a loading moving assembly, a loading manipulator, a unloading moving assembly and a unloading manipulator, the loading manipulator is connected to the loading moving assembly, the loading moving assembly is used to drive the loading manipulator to move so as to drive the lenses to be loaded to the turntable, the unloading manipulator is connected to the unloading moving assembly, and the unloading moving assembly is used to drive the unloading manipulator to move so as to drive the lenses to be unloaded from the turntable.

8. The lens testing system of claim 1, wherein: The second grabbing assembly is capable of driving the lenses to move in a range of 150-650 millimeters from the film, and the film is capable of making the detection field angle range of the lenses less than or equal to 130 degrees.

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