Lens detection device

Abstract

The utility model discloses a lens detection device which comprises an operation platform, a rotating disc is arranged on the operation platform, and a plurality of lens carriers are uniformly distributed on the edge of the rotating disc along the circumferential direction of the rotating disc. A pre-focusing assembly, a visual positioning assembly, a fine focusing assembly, a smudginess testing assembly, a dispensing assembly and a curing assembly are sequentially arranged on the operation platform around the rotating disc, and the rotating disc rotates to drive the lens assembly to sequentially pass through the focusing assembly, the visual positioning assembly, the fine focusing assembly, the smudginess testing assembly, the dispensing assembly and the curing assembly. According to the lens detection device provided by the utility model, the visual positioning assembly is arranged to carry out visual positioning on the lens before fine focusing, so that the coaxiality of the center of the teleconverter and the lens is ensured, the situation that the stress of the clamping device deviates to one side is avoided, and the influence of a lens structure error on detection is avoided; and the detection requirement of a high-definition lens can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of lens detection equipment, and more specifically, to a lens detection device. Background Art

[0002] Lens inspection requires focusing. Due to the small size of security cameras, current factory-produced security cameras are manually focused, relying on human visual judgment of clarity. This is time-consuming, inefficient, and unreliable. While commercially available passive focusing systems are time-efficient and highly efficient, they cannot meet the high-definition requirements. Utility Model Content

[0003] In view of the deficiencies of the prior art, the present invention innovatively provides a lens detection device, which can solve the technical problems of low focusing efficiency and poor clarity of the lens detection device in the prior art.

[0004] To achieve the above technical objectives, the present invention discloses a lens detection device, comprising an operating platform, a turntable is provided on the operating platform, and a plurality of lens carriers are evenly distributed along the circumference of the turntable.

[0005] The operating platform is provided with a pre-focusing component, a visual positioning component, a fine focusing component, a dirt testing component, a dispensing component and a curing component in sequence around the turntable.

[0006] The rotation of the turntable drives the lens assembly to pass through the focusing assembly, visual positioning assembly, fine focusing assembly, dirt testing assembly, dispensing assembly and curing assembly in sequence.

[0007] Furthermore, a loading and unloading station is formed on the outer side of the turntable, and the lens carrier loads and unloads the lens to be tested at the loading and unloading station.

[0008] Furthermore, a measuring component is also provided on the operating platform, and the measuring component is adjacent to the pre-focusing component. The lens assembly moves to the position of the pre-focusing component after passing through the measuring component.

[0009] Furthermore, the measuring assembly includes a measuring bracket, an adjusting screw is provided on the measuring bracket, and an industrial camera and a measuring light source board are adjustable on the screw.

[0010] Furthermore, the visual positioning component includes a positioning bracket and a positioning camera, and the positioning camera is arranged on the positioning bracket and located above the turntable.

[0011] Furthermore, the positioning bracket includes a column and a mounting seat, the mounting seat is arranged on the column, and the positioning camera is arranged on the mounting seat.

[0012] Furthermore, a light source bracket is provided on the mounting seat, and a light source lamp is provided on the light source bracket, and the light source lamp is located on the lower side of the positioning camera.

[0013] Furthermore, the fine focusing assembly includes a fine adjustment bracket, a relay lens and a test chart, wherein the relay lens is located between the lens carrier and the test chart.

[0014] The test chart is arranged on the fine-tuning bracket, and the relay mirror is arranged on the fine-tuning bracket in an adjustable manner through a support frame.

[0015] Furthermore, the dirt testing assembly includes a dirty light source board, which is located above the lens carrier.

[0016] The beneficial effects of the utility model are:

[0017] The lens detection device provided by the utility model is provided with a visual positioning component to visually position the lens before fine focusing, thereby ensuring the coaxiality of the center of the teleconverter and the lens and that the clamping device will not have stress biased to one side, avoiding the influence of lens structural errors on detection, and can meet the detection requirements of high-definition lenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a lens detection device according to an embodiment of the present invention is shown;

[0019] Figure 2 A schematic top view of a lens detection device according to an embodiment of the present invention is shown (excluding the test chart);

[0020] Figure 3 A schematic diagram showing the structure of a test assembly according to an embodiment of the present utility model is shown;

[0021] Figure 4 A structural schematic diagram of the visual positioning component of an embodiment of the present utility model is shown.

[0022] In the figure,

[0023] 1. Operating platform; 2. Turntable; 3. Lens carrier; 4. Measuring assembly; 41. Vertical rod; 42. Horizontal rod; 43. Adjusting screw; 44. Measuring camera; 45. Measuring light source board; 5. Pre-focusing assembly; 6. Visual positioning assembly; 61. Column; 62. Mounting seat; 63. Positioning camera; 64. Light source bracket; 65. Light source lamp; 7. Fine focusing assembly; 71. Relay lens; 72. Test chart; 8. Dirt test assembly; 9. Dispensing assembly; 10. Curing assembly. DETAILED DESCRIPTION

[0024] The lens detection device provided by the present invention is explained and illustrated in detail below with reference to the accompanying drawings.

[0025] The lens detection device provided by the present invention visually locates the lens before fine-focusing by providing a visual positioning component, thereby ensuring the coaxiality of the teleconverter center with the lens and that the clamping device does not experience stress bias to one side, thus avoiding the impact of lens structural errors on detection and meeting the detection requirements of high-definition lenses. In addition, the lens height is detected by the visual measurement component before pre-focusing, and the measured height difference is converted into the number of steps of the point machine twisting. Pre-focusing can be performed without the equipment completing the output of the image, thereby improving efficiency. The following is a detailed introduction to the present invention in conjunction with specific embodiments:

[0026] In some embodiments, the present invention provides a lens detection device, such as Figure 1 、 Figure 2 As shown, it includes an operating platform 1, a turntable 2 is provided on the operating platform 1, and a plurality of lens carriers 3 are evenly distributed along the circumference of the edge of the turntable 2. The turntable 2 is rotatably provided on the operating platform 1 and drives the plurality of lens carriers 3 to pass through different workstations in sequence.

[0027] There are multiple workstations evenly distributed around the circumference of the turntable 2 on the operating platform 1, and different operating components are arranged at different workstations. Optionally, a pre-focusing component 5, a visual positioning component 6, a fine focusing component 7, a dirt testing component 8, a dispensing component 9 and a curing component 10 are arranged in sequence around the turntable 2. The rotation of the turntable 2 drives the lens assembly to pass through the focusing component, the visual positioning component 6, the fine focusing component 7, the dirt testing component 8, the dispensing component 9 and the curing component 10 in sequence to perform detection operations.

[0028] Optionally, a loading and unloading station is formed on the outside of the turntable 2, and the lens carrier 3 loads and unloads the lens to be tested at the loading and unloading station. The lens carrier 3 installs the inspection lens at the loading and unloading station, and after completing the inspection, it returns to the loading and unloading station to remove the lens, thus completing the entire inspection process.

[0029] In some embodiments, a measuring component 4 is further provided on the operating platform 1, and the measuring component 4 is adjacent to the pre-focusing component 5. The lens assembly moves to the position of the pre-focusing component 5 after passing through the measuring component 4. Figure 3As shown, the measurement assembly 4 includes a measurement bracket, which includes a longitudinal rod 41 and a transverse rod 42. The longitudinal rod 41 is arranged perpendicular to the operating platform 1, and the transverse rod 42 is arranged perpendicular to the longitudinal rod 41 and extends above the turntable 2. The transverse rod 42 is slidably mounted on the longitudinal rod 41, and its height can be adjusted. Optionally, a connecting rail is provided along the longitudinal rod 41, and the transverse rod 42 and the longitudinal rod 41 are slidably connected by the rail, and the position of the transverse rod 42 is fixed by bolts. The transverse rod 42 is provided with an adjustment screw 43, which is arranged parallel to the transverse rod 42. The adjustment screw 43 is provided with a measurement camera 44. The measurement camera 44 is threadedly connected to the adjustment screw 43 via a connector, allowing it to move along the axis of the screw to adjust its position. Optionally, the measurement camera 44 is an industrial camera that can capture the lens assembly being measured and adjust the position of the measurement camera 44 to achieve the optimal shooting position. A measuring light source board 45 is further provided on the side opposite to the measuring camera 44 , that is, the free end of the crossbar 42 . The measuring light source board 45 can be a white light source board for illuminating the lens module to be measured and providing visual judgment.

[0030] In some embodiments, as Figure 4 As shown, the visual positioning assembly 6 includes a positioning bracket, a positioning camera 63, and a light source 65. The positioning bracket includes a column 61 and a mounting base 62. The column 61 is vertically arranged on the operating platform 1. The mounting base 62 is arranged at the top of the column 61. The mounting base 62 includes an adjustment rod. The positioning camera 63 is mounted on the mounting base 62. The adjustment rod can be used to adjust the position of the positioning camera 63 so that the concentricity of the positioning camera 63 and the reference object can meet the requirements. The adjustment distance and direction are obtained by the distance deviation between the lens assembly under test and the reference object. The positioning camera 63 is preferably an industrial camera, located above the turntable 2, so that the positioning camera 63 can photograph the lens assembly under test from top to bottom. Optionally, a light source bracket 64 is also provided on the mounting base 62. The light source bracket 64 is located below the shooting camera. The light source 65 is mounted on the light source bracket 64 for illuminating the lens assembly under test. In this embodiment, the light source 65 is a ring light, and the positioning camera 63, the light source 65, and the lens assembly under test are located in a straight line.

[0031] In some embodiments, the fine focus assembly 7 includes a fine adjustment bracket, on which are mounted a relay lens 71, a test chart 72, and a light source. The relay lens 71 is positioned between the lens carrier 3 and the test chart 72. The test chart 72 is mounted on top of the fine adjustment bracket and is height-adjustable to accommodate adjustments required for different lens types or products. The test chart 72 can be raised and lowered on the fine adjustment bracket, making operation simpler and more convenient, facilitating inspection and adjustment of the lens assembly.

[0032] The fine-tuning bracket is equipped with a support frame, on which the relay lens 71 is mounted. This support frame secures the relay lens 71 and allows for vertical and horizontal adjustment of its position and height. Based on the visual positioning results, it is moved above the lens carrier 3 for position correction. After position correction, the focusing assembly is lowered until the lens clamping mechanism reaches the adjusted height. The lens captures the test chart 72 directly above it through the teleconverter. The resulting image quality controls the lens clamping mechanism, turning left or right, until the required sharpness test value is met.

[0033] In some embodiments, the dirt testing assembly 8 includes a dirty light source board, which is located above the lens carrier 3. The lens assembly determines whether there is dirt on the surface of the lens assembly by photographing the dirty light source board.

[0034] The dispensing component 9 is set on one side of the dirty test component 8. When the lens assembly to be tested moves to the position of the dispensing component 9, UV dispensing operation is performed, and then it moves to the position of the curing component 10 to cure the glue.

[0035] The detection process of the lens detection device provided by the utility model includes:

[0036] At the loading and unloading station, the lens assembly to be tested is mounted on the lens carrier 3, and the lens assembly is powered on. Then the turntable 2 rotates to drive the lens assembly to the station where the measuring assembly 4 is located. The height of the lens assembly is measured by the measuring assembly 4, and the number of turns required is calculated. The turntable 2 rotates to reach the station where the pre-focusing assembly 5 is located. At the pre-focusing station, the lens is tightened and rotated by the motor-controlled clamping mechanism. The rotation of the turntable 2 drives the lens assembly to the station where the visual positioning assembly 6 is located, and the lens position is calibrated using vision. Then the turntable 2 rotates to drive the lens assembly to the station where the fine focusing assembly 7 is located, and the relay lens 71 is moved above the lens assembly. The lens assembly shoots the test chart 72 above through the relay lens 71. The support frame is rotated left or right according to the clarity quality of the output image until the clarity test value meets the requirements.

[0037] Turntable 2 rotates to move the lens assembly to the station where the dirt test assembly 8 is located. A light source board is located above the lens. The light source board is photographed to determine whether the dirt meets the test requirements. When the dirt meets the test requirements, turntable 2 rotates to move the lens assembly to the position where the glue dispensing assembly 9 is located for glue dispensing. Then, it rotates to the curing assembly 10 for glue curing. Finally, turntable 2 rotates to move the lens assembly to the loading and unloading station, where the lens assembly is removed from the lens carrier 3, completing the test operation.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore should not be understood as a limitation to the present invention.

[0039] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0040] In the description of this specification, the description with reference to the terms "this embodiment", "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in an appropriate manner in any at least one embodiment or example. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and simple improvements made to the essential contents of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A lens detection device, characterized in that: The system comprises an operating platform, wherein a turntable is provided on the operating platform, and a plurality of lens carriers are evenly distributed along the circumference of the turntable. The operating platform is provided with a pre-focusing component, a visual positioning component, a fine focusing component, a dirt testing component, a dispensing component and a curing component in sequence around the turntable. The rotation of the turntable drives the lens assembly to pass through the focusing assembly, visual positioning assembly, fine focusing assembly, dirt testing assembly, dispensing assembly and curing assembly in sequence.

2. The lens detection device according to claim 1, characterized in that: A loading and unloading station is also formed on the outer side of the turntable, and the lens carrier loads and unloads the lens to be tested at the loading and unloading station.

3. The lens detection device according to claim 2, characterized in that: The operating platform is further provided with a measuring component, which is adjacent to the pre-focusing component. The lens component moves to the position of the pre-focusing component after passing through the measuring component.

4. The lens detection device according to claim 3, characterized in that: The measuring assembly comprises a measuring bracket, an adjusting screw is provided on the measuring bracket, and an industrial camera and a measuring light source board are adjustable on the screw.

5. The lens detection device according to claim 4, characterized in that: The visual positioning component includes a positioning bracket and a positioning camera. The positioning camera is arranged on the positioning bracket and located above the turntable.

6. The lens detection device according to claim 5, characterized in that: The positioning bracket includes a column and a mounting seat, the mounting seat is arranged on the column, and the positioning camera is arranged on the mounting seat.

7. The lens detection device according to claim 6, characterized in that: A light source bracket is also provided on the mounting seat, and a light source lamp is provided on the light source bracket. The light source lamp is located at the lower side of the positioning camera.

8. The lens detection device according to claim 4, characterized in that: The fine focusing assembly includes a fine adjustment bracket, a relay lens and a test chart, wherein the relay lens is located between the lens carrier and the test chart. The test chart is arranged on the fine-tuning bracket, and the relay mirror is arranged on the fine-tuning bracket in an adjustable manner through a support frame.

9. The lens detection device according to claim 4, characterized in that: The dirt testing assembly includes a dirty light source board, which is located above the lens carrier.

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