An anti-fog detection device for an optical lens

Abstract

The present invention discloses an optical lens anti-fog detection device, comprising: a frame having an X-axis guide rail extending along the X-axis direction; a heating platform disposed on the frame, having a positioning groove for placing a supporting optical lens, and the heating platform configured to heat the optical lens; a sliding switching seat slidably connected to the X-axis guide rail; an air blowing nozzle disposed on the sliding switching seat, with the air blowing direction of the air blowing nozzle facing downward; and a camera module disposed on the sliding switching seat, the camera module being configured to capture an image of the surface of the optical lens. The heating platform heats the optical lens to a preset temperature, the air blowing nozzle blows air toward the optical lens, instantly lowering the temperature of the optical lens, and the camera module captures an image of the optical lens surface. If the anti-fog film on the optical lens is uneven or not coated with the anti-fog film, fog will be generated and displayed in a concrete manner in the image captured by the camera module, thereby enabling rapid detection of whether the anti-fog performance of the optical lens is qualified, thereby improving efficiency.

Description

Technical Field

[0001] The present invention relates to the field of optical lens testing, and in particular to an optical lens anti-fog detection device. Background Art

[0002] Optical lenses are generally required to have anti-fog properties. Manufacturers apply an anti-fog coating to them during production. This coating's effectiveness must be tested before shipment to ensure it meets the required standards. Currently, testing of anti-fog coated optical lenses is typically done manually by cooling them, spraying them with alcohol, and then wiping them to see if fogging occurs. This manual testing process is complex and inefficient. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an optical lens anti-fog detection device, which can effectively improve the anti-fog detection efficiency of the optical lens.

[0004] According to an embodiment of the present invention, an optical lens anti-fog detection device includes: a frame, an X-axis guide rail extending along the X-axis direction; a heating platform, arranged on the frame, the heating platform having a positioning groove, the positioning groove being used to place a supporting optical lens, and the heating platform is configured to heat the optical lens; a sliding switching seat, slidably connected to the X-axis guide rail; an air blowing nozzle, arranged on the sliding switching seat, the air blowing nozzle being connected to an air supply pipe, and the blowing direction of the air blowing nozzle is downward; a camera module, arranged on the sliding switching seat, the camera module being used to acquire an image of the surface of the optical lens; when the heating platform heats the optical lens to a preset temperature, the sliding switching seat moves along the X-axis guide rail, the sliding switching seat first drives the air blowing nozzle to move above the heating platform, the air blowing nozzle blows toward the optical lens, the sliding switching seat then drives the air blowing nozzle away from the heating platform and simultaneously drives the camera module to move above the heating platform, and the camera module acquires an image of the surface of the optical lens.

[0005] At least it has the following beneficial effects: the detection device adopts a positioning groove to place the optical lens, the heating table heats the optical lens to a preset temperature, the sliding switching seat moves along the X-axis guide rail, the sliding switching seat first drives the blowing nozzle to move above the heating table, and the blowing nozzle blows air toward the optical lens, instantly reducing the temperature of the optical lens, and the sliding switching seat then drives the blowing nozzle away from the heating table and at the same time drives the camera module to move above the heating table, and the camera module obtains an image of the surface of the optical lens. If the anti-fog film on the optical lens is uneven or not coated with an anti-fog film, the gas blown out of the blowing nozzle toward the optical lens can condense into small water droplets on the surface of the optical lens, generating fog and being concretely displayed in the image obtained by the camera module, thereby being able to quickly detect whether the anti-fog performance of the optical lens is qualified, realize automated detection, and improve efficiency.

[0006] According to some embodiments of the present invention, the sliding switching seat is provided with a lifting guide rail extending in the up and down directions, the lifting guide rail is slidably connected to the lifting seat, and the blowing nozzle and the camera module are respectively arranged at both ends of the lifting seat in the X-axis direction.

[0007] According to some embodiments of the present invention, the camera module includes a camera and a fill light installed on the lifting seat, the fill light is directed downward, and a light hole is opened from top to bottom of the fill light, and the camera is located above the light hole.

[0008] According to some embodiments of the present invention, the heating platform includes a heat-conducting block and a first heating rod inserted in the heat-conducting block, the positioning groove is formed on the heat-conducting block, and the heat-conducting block is used to transfer heat from the first heating rod to the optical lens.

[0009] According to some embodiments of the present invention, the preset temperature is 80°C.

[0010] According to some embodiments of the present invention, the air blowing nozzle is connected to the air supply pipe through a refrigeration chamber, and a refrigerator is installed in the refrigeration chamber.

[0011] According to some embodiments of the present invention, the blowing nozzle blows air toward the optical lens for 3 to 5 seconds.

[0012] According to some embodiments of the present invention, it also includes: a preheating platform, which is arranged on a frame, and a loading tray is positioned on the preheating platform, and the loading tray is used to load a plurality of the optical lenses, and the preheating platform can transfer heat to the optical lenses through the loading tray; a Y-axis guide rail, which is arranged on the frame and extends along the Y-axis direction, and a loading station is provided at one end of the Y-axis guide rail close to the preheating platform, and a detection station is provided below the sliding switching seat of the Y-axis guide rail, and the heating platform is slidably connected to the Y-axis guide rail and moves back and forth between the loading station and the detection station; a material transferring claw, which is slidably connected to the frame and moves back and forth between the loading tray and the loading station, and the material transferring claw can clamp the optical lens on the loading tray and release the optical lens and place it on the heating platform on the loading station.

[0013] According to some embodiments of the present invention, there are multiple groups of Y-axis guide rails arranged along the X-axis direction, and there are corresponding multiple groups of heating platforms. The multiple groups of heating platforms correspond one-to-one to the multiple groups of Y-axis guide rails, and the sliding switching seat can slide between the detection stations of the multiple groups of Y-axis guide rails.

[0014] According to some embodiments of the present invention, a second heating rod is inserted into the preheating platform, and the preheating platform is used to transfer heat of the second heating rod to the loading tray.

[0015] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0017] Figure 1 This is a structural diagram of an embodiment of the present invention when the heating table is in the loading station;

[0018] Figure 2 This is a structural diagram of an embodiment of the present invention when the heating platform is in the detection position;

[0019] Figure 3 Schematic diagram of the structure of the heating platform in an embodiment of the present invention.

[0020] Figure numbers: frame 1, X-axis guide rail 11, Y-axis guide rail 12, loading station 121, inspection station 122, heating table 2, positioning groove 21, heat conduction block 22, optical lens 3, sliding switching seat 4, lifting guide rail 41, lifting seat 42, blowing nozzle 5, camera module 6, camera 61, fill light 62, light hole 621, refrigeration chamber 7, preheating platform 8, loading tray 9, material transfer clamp 10. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, X-axis direction, Y-axis direction, and up and down directions, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] Reference Figures 1 to 3 The present invention discloses an optical lens anti-fog detection device, which includes a frame 1, a heating platform 2, a sliding switching seat 4, an air blowing nozzle 5 and a camera module 6.

[0025] The heating platform 2 is provided on the frame 1. The heating platform 2 can be fixed or movably connected to the frame 1. The heating platform 2 has a positioning groove 21. Figure 3 The positioning groove 21 is used to place the optical lens 3 and plays the role of positioning and supporting the optical lens 3. The heating platform 2 is configured to heat the optical lens 3.

[0026] Reference Figure 2 The frame 1 is provided with an X-axis guide rail 11 extending along the X-axis direction, the sliding switching seat 4 is slidably connected to the X-axis guide rail 11, the blowing nozzle 5 and the camera module 6 are both arranged on the sliding switching seat 4, and the blowing nozzle 5 and the camera module 6 can slide on the X-axis guide rail 11.

[0027] Among them, the blowing nozzle 5 is connected to an air supply pipe, and the air supply pipe is externally connected to an air source. The air source can provide airflow to the blowing nozzle through the air supply pipe. The blowing direction of the blowing nozzle 5 is downward, specifically blowing towards the surface of the optical lens 3. The camera module 6 is used to obtain an image of the surface of the optical lens 3.

[0028] Reference Figure 1When the heating platform 2 heats the optical lens 3 to a preset temperature, the sliding switching seat 4 moves along the X-axis guide rail 11. The sliding switching seat 4 first drives the blowing nozzle 5 to move above the heating platform 2, and the blowing nozzle 5 blows air toward the optical lens 3. The sliding switching seat 4 then drives the blowing nozzle 5 away from the heating platform 2 and at the same time drives the camera module 6 to move above the heating platform 2. The camera module 6 obtains an image of the surface of the optical lens 3.

[0029] It can be understood that the preset temperature is greater than room temperature. If the anti-fog film on the optical lens 3 is uneven or not coated with an anti-fog film, the gas blown out of the air nozzle 5 toward the optical lens 3 can condense into small water droplets on the surface of the optical lens 3, generating fog and being concretely displayed in the image obtained by the camera module 6, thereby being able to quickly detect whether the anti-fog performance of the optical lens 3 is qualified, realize automated detection, and improve efficiency.

[0030] It can be understood that after the camera module 6 obtains the image of the surface of the optical lens 3, it can specifically process the image through the control system, and then compare the detection image with the sample image to obtain the detection result; in addition, the detection image can also be manually viewed to determine whether the anti-fog performance of the optical lens 3 is qualified.

[0031] In some embodiments of the present invention, reference Figure 1 and Figure 2 The sliding switching seat 4 is provided with a lifting guide rail 41 extending along the up and down directions, and a lifting seat 42 is slidably connected to the lifting guide rail 41. The air blowing nozzle 5 and the photo module 6 are respectively arranged at the two ends of the lifting seat 42 in the X-axis direction. By moving the sliding switching seat 4 along the X-axis direction, the operation of the air blowing nozzle 5 and the photo module 6 on the optical lens 3 is switched. Moreover, the lifting seat 42 can also drive the air blowing nozzle 5 and the photo module 6 to rise and fall, thereby changing the blowing distance between the air blowing nozzle 5 and the optical lens 3 and the photo distance between the photo module 6 and the optical lens 3, thereby realizing fine control.

[0032] Reference Figure 2 In some embodiments, the camera module 6 includes a camera 61 and a fill light 62 installed on the lifting base 42. The fill light 62 is directed downward to provide a bright shooting environment for the camera 61. The fill light 62 can be specifically in a circular shape and have a light hole 621 running through it from top to bottom. The camera 61 is located above the light hole 621. The camera 61 can specifically be a CCD camera. The camera 61 can aim at the optical lens 3 through the light hole to take pictures.

[0033] Reference Figure 3 In some embodiments, the heating platform 2 includes a heat conductive block 22 and a first heating rod inserted into the heat conductive block 22 , and a positioning groove 21 is formed on the heat conductive block 22 . The heat conductive block 22 is used to transfer heat from the first heating rod to the optical lens 3 to achieve heating of the optical lens 3 .

[0034] The first heating rod can specifically be a temperature-controlled heating rod, which is used to heat the optical lens to a preset temperature. The optical lens is continuously heated to keep the temperature at the preset temperature. In some embodiments, the preset temperature is 80°C.

[0035] In order to further improve the detection efficiency, refer to Figure 2 In some embodiments, the air blowing nozzle 5 is connected to the air supply pipe through the refrigeration chamber 7. A refrigerator is installed in the refrigeration chamber 7. The refrigerator cools the gas in the refrigeration chamber 7 so that the temperature of the gas blown toward the optical lens 3 by the air blowing nozzle 5 is lower than the room temperature and the temperature of the optical lens 3 itself. If the anti-fog film on the optical lens 3 is uneven or not coated with an anti-fog film, the cooled gas can condense into small water droplets on the surface of the optical lens 3, quickly generating fog and shortening the blowing time. In some embodiments, the air blowing nozzle 5 blowing toward the optical lens 3 only needs to last for 3 to 5 seconds, thereby effectively improving the detection efficiency.

[0036] In some embodiments of the present invention, reference Figure 1 The detection device also includes a preheating platform 8, a Y-axis guide rail 12 and a material transfer clamp 10.

[0037] Among them, the preheating platform 8 is arranged on the frame 1, and a loading tray 9 is positioned on the preheating platform 8. The loading tray 9 is used to load multiple optical lenses 3. The preheating platform 8 can conduct heat to the optical lens 3 through the loading tray 9, thereby realizing the preheating effect on the optical lens 3 and shortening the heating time of the optical lens 3 on the heating platform 2.

[0038] Reference Figure 1 and Figure 2 The Y-axis guide rail 12 is arranged on the frame 1 and extends along the Y-axis direction. A loading station 121 is provided at one end of the Y-axis guide rail 12 close to the preheating platform 8. A detection station 122 is provided below the sliding switching seat 4. The heating table 2 is slidably connected to the Y-axis guide rail 12 and travels back and forth between the loading station 121 and the detection station 122.

[0039] The material transfer clamp 10 is slidably connected to the frame 1 and moves back and forth between the loading tray 9 and the loading station 121. The material transfer clamp 10 can clamp the optical lens 3 on the loading tray 9 and release the optical lens 3 and place it on the heating table 2 on the loading station 121 to realize the loading operation on the heating table 2. Figure 1 and Figure 2 When the heating platform 2 is at the loading station 121 and the detection station 122, the loading operation and the detection operation can be respectively performed, and the optical lens 3 can be heated during the process of the heating platform 2 sliding from the loading station 121 to the detection station 122.

[0040] It should be noted that the material transfer clamp 10 can specifically slide relative to the frame 1 along the X-axis direction, the Y-axis direction and the up and down direction to realize the transfer of the optical lens 3 to be inspected between the loading tray 9 and the heating table 2. The material transfer clamp 10 can also realize the unloading operation, transferring the optical lens 3 that has been inspected from the heating table 2 to the unloading tray, and then transferring the subsequent optical lens 3 to be inspected from the loading tray 9 to the heating table 2, thereby realizing the recycling of the heating table 2.

[0041] Reference Figure 1 The Y-axis guide rails 12 can be arranged in multiple groups along the X-axis direction, and the heating tables 2 are also provided with multiple groups accordingly. The multiple groups of heating tables 2 correspond one-to-one to the multiple groups of Y-axis guide rails 12. The sliding switching seat 4 can slide between the detection stations 122 of the multiple groups of Y-axis guide rails 12 to achieve one-to-many efficient operation.

[0042] In some embodiments, a second heating rod is inserted into the preheating platform 8 , and the preheating platform 8 is used to transfer the heat of the second heating rod to the upper material tray 9 , thereby shortening the heating time of the optical lens 3 on the heating platform 2 .

[0043] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0044] Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An optical lens anti-fog detection device, characterized in that: include: The frame is provided with an X-axis guide rail extending along the X-axis direction; a heating platform, disposed on the frame, having a positioning groove on the heating platform, the positioning groove being used to place a supporting optical lens, the heating platform being configured to heat the optical lens, the heating platform comprising a heat conducting block and a first heating rod inserted into the heat conducting block, the positioning groove being formed on the heat conducting block, the heat conducting block being used to transfer heat from the first heating rod to the optical lens; A sliding switching seat, slidably connected to the X-axis guide rail; An air blowing nozzle is provided on the sliding switching seat, the air blowing nozzle is connected to an air supply pipe through a refrigeration chamber, a refrigerator is installed in the refrigeration chamber, and the air blowing direction of the air blowing nozzle is downward; A camera module is provided on the sliding switch seat, and is used to obtain an image of the surface of the optical lens; When the heating platform heats the optical lens to 80°C, the sliding switching seat moves along the X-axis guide rail, and the sliding switching seat first drives the blowing nozzle to move above the heating platform, and the blowing nozzle blows air toward the optical lens. The sliding switching seat then drives the blowing nozzle away from the heating platform and at the same time drives the camera module to move above the heating platform, and the camera module obtains an image of the surface of the optical lens.

2. The optical lens anti-fog detection device according to claim 1, characterized in that: The sliding switching seat is provided with a lifting guide rail extending in the up-down direction, the lifting guide rail is slidably connected to the lifting seat, and the blowing nozzle and the camera module are respectively provided at two ends of the lifting seat in the X-axis direction.

3. The optical lens anti-fog detection device according to claim 2, characterized in that: The photographing module comprises a camera and a fill light mounted on the lifting seat. The irradiation direction of the fill light faces downward. The fill light is provided with a light-transmitting hole running through the top and bottom. The camera is located above the light-transmitting hole.

4. The optical lens anti-fog detection device according to claim 1, characterized in that: The time for the air blowing nozzle to blow air toward the optical lens lasts for 3 to 5 seconds.

5. The optical lens anti-fog detection device according to claim 1, characterized in that: Also includes: A preheating platform is provided on the frame, a loading tray is positioned on the preheating platform, the loading tray is used to load a plurality of the optical lenses, and the preheating platform can conduct heat to the optical lenses through the loading tray; A Y-axis guide rail is provided on the frame and extends along the Y-axis direction. A loading station is provided on one end of the Y-axis guide rail close to the preheating platform. A detection station is provided below the sliding switching seat. The heating platform is slidably connected to the Y-axis guide rail and moves back and forth between the loading station and the detection station. The material transfer clamp is slidably connected to the frame and moves back and forth between the loading tray and the loading station. The material transfer clamp can clamp the optical lens on the loading tray and release the optical lens to place it on the heating table on the loading station.

6. The optical lens anti-fog detection device according to claim 5, characterized in that: There are multiple groups of Y-axis guide rails arranged along the X-axis direction, and there are multiple groups of heating platforms corresponding to each other. The multiple groups of heating platforms correspond one to one with the multiple groups of Y-axis guide rails, and the sliding switching seat can slide between the detection stations of the multiple groups of Y-axis guide rails.

7. The optical lens anti-fog detection device according to claim 5, characterized in that: A second heating rod is inserted into the preheating platform, and the preheating platform is used to transfer the heat of the second heating rod to the loading tray.

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