Lens aging test device and method

Abstract

The application provides a lens aging test device and method. The device comprises a main control unit, a plurality of lens bayonet connectors and a plurality of lens bayonet connectors. The main control unit controls the plurality of lens bayonet connectors through a multi-channel analog switch unit. One lens bayonet connector controls the power supply of one lens to be tested, realizes the control of the plurality of lenses to be tested for aging test, and realizes the centralized control of the plurality of lenses to be tested by the cooperation of the main control unit and the multi-channel analog switch unit. The plurality of lenses to be tested are tested in parallel or polling, the test efficiency is significantly improved, the circuit structure is simplified, and the test cost is reduced. The method comprises the following steps: collecting a plurality of lens image data connected to the lens to be tested by the lens aging device; adopting a frame difference method combined with an edge detection algorithm to analyze the plurality of continuous lens image data; judging whether the lens to be tested is abnormal; if the lens to be tested is normal, the lens aging device enters the test of the next lens to be tested; and if the lens to be tested is abnormal, an abnormal alarm is sent and fed back to the upper computer.

Description

Technical Field

[0001] This application relates to the field of lens aging testing technology, and in particular to a lens aging testing device and method. Background Technology

[0002] During the research, development, production, and quality inspection of camera lenses, the aperture mechanism and focusing motor inside the lens need to undergo long-term, repetitive operation tests to verify their mechanical reliability, electrical stability, and service life.

[0003] Existing lens aging test methods mostly use single-lens testing or simple power supply drive, which has low testing efficiency and can only perform aging tests on a single or a small number of lenses at a time, making it difficult to meet the needs of mass production. Summary of the Invention

[0004] The technical problem to be solved by this application is that existing lens aging test methods mostly use single-lens testing or simple power supply drive, which has low testing efficiency and can only perform aging tests on a single or a small number of lenses at a time, making it difficult to meet the needs of mass production.

[0005] To address the aforementioned issues, this application provides a lens aging test apparatus and method.

[0006] In a first aspect, the present invention discloses a lens aging test device, which includes a main control unit, a lens detection unit, a multi-channel analog switch unit, and multiple lens mount connectors. The main control unit is connected to the lens detection unit, the multi-channel analog switch unit and the multiple lens mount connectors. The multi-channel analog switch unit is connected to the multiple lens mount connectors. One lens mount connector is electrically connected to a lens to be tested. The main control unit transmits electrical signals to the multi-channel analog switch unit. The multi-channel analog switch unit controls one or more lens mount connectors to connect the lens under test. The lens detection unit collects image information from the lens under test. The main control unit determines the operating status of the lens under test based on the collected image information.

[0007] Preferably, it includes a power supply unit, which is connected to the main control unit; The power supply unit includes an interface subunit, a voltage regulator subunit, and a power supply subunit. The interface subunit is connected to the power supply subunit, and the power supply subunit is connected to the voltage regulator subunit.

[0008] Preferably, the power supply subunit includes a power control switch, which is connected to the interface subunit; The interface subunit includes an interface, which adopts a TYPE-C interface.

[0009] Preferably, the lens detection unit includes a connection subunit and a detection subunit, wherein the connection subunit is connected to the detection subunit and the detection subunit is connected to the main control unit.

[0010] Preferably, it includes an optical alarm unit, which is connected to a multi-channel analog switch unit.

[0011] Preferably, it includes an acoustic alarm unit and a buzzer, the acoustic alarm unit being connected to the main control unit and the acoustic alarm unit being connected to the buzzer.

[0012] Preferably, it includes a storage unit, which is connected to the lens detection unit.

[0013] Preferably, it includes a button, which is electrically connected to the main control unit.

[0014] Secondly, this invention discloses a lens aging test method, applicable to the aforementioned lens aging test apparatus, comprising, The lens to be tested is loaded into the lens aging test device, and images of the lens to be tested are continuously acquired within a predetermined time to obtain continuous multi-frame lens image data. Combining frame difference method and edge detection method, focusing motion detection and aperture motion detection processing are performed on continuous multi-frame lens image data to obtain real-time lens motion parameters and real-time aperture motion parameters. The real-time lens motion parameters include the number of lens reciprocating motions and displacement amplitude, while the real-time aperture motion parameters include the number of aperture blade opening and closing and the amount of aperture aperture change. The system presets threshold values ​​for lens motion parameters and aperture motion parameters. When the real-time lens motion parameters are greater than the threshold values ​​and / or the real-time aperture motion parameters are greater than the threshold values, the lens under test is determined to be normal, and the test proceeds to the next lens under test. When the real-time lens motion parameters are less than the threshold values ​​and / or the real-time aperture motion parameters are less than the threshold values, the lens under test is determined to be abnormal, and the lens aging test device issues an abnormal alarm signal and feeds back the relevant information of the lens under test to the host computer.

[0015] Preferably, by combining frame difference method and edge detection method, focusing motion detection processing and aperture motion detection processing are performed on multiple consecutive frames of lens image data to obtain real-time lens motion parameters and real-time aperture motion parameters, specifically including the following steps: Extract the edge features of the focusing lens and the aperture features formed by the aperture blades from a series of consecutive lens image data to obtain the focusing lens image feature set and the aperture image feature set. By combining the image feature set of the focusing lens, the displacement amplitude, motion speed and reciprocating motion number of the focusing lens in the image are calculated to obtain the real-time lens motion parameters; The diameter change of the aperture formed during the opening and closing process is calculated by combining the aperture image feature set, and the number of aperture blade opening and closing is calculated to obtain the real-time aperture motion parameters.

[0016] The technical solution provided in this application has the following advantages compared with the prior art: This application provides a lens aging test apparatus and method. The apparatus mentions that the main control unit controls multiple lens mount connectors through a multi-channel analog switch unit, and each lens mount connector controls the power supply of one lens under test, thereby controlling multiple lenses under test to perform aging tests. By utilizing the cooperation between the main control unit and the multi-channel analog switch unit, centralized control of multiple lenses under test and parallel or polling aging tests of multiple lenses under test can be achieved, significantly improving test efficiency, simplifying circuit structure, and reducing test costs.

[0017] Furthermore, the lens aging test device combines a buzzer and LED sound and light alarm, which can promptly remind testers when the lens is abnormal, reducing the risk of missed detection.

[0018] The method describes a lens aging device that acquires multiple frames of lens image data from the lens under test. It then uses a frame difference method combined with an edge detection algorithm to perform image analysis on these consecutive frames, including aperture and focus action detection, to determine if the lens under test is abnormal. If the lens is normal, the lens aging device proceeds to test the next lens. If the lens is abnormal, an alarm is issued and feedback is sent to the host computer. Using a frame difference method combined with an edge detection algorithm to detect aperture and focus actions enables automatic judgment of the lens's operating status, improving test reliability. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A structural module diagram of the lens aging test device provided in this application; Figure 2 Circuit diagram of the main control unit of the lens aging test device provided in this application; Figure 3 A circuit diagram of the connection subunit of the lens aging test device provided in this application; Figure 4 A circuit diagram of the detection subunit of the lens aging test device provided in this application; Figure 5Circuit diagram of the multi-channel analog switch unit of the lens aging test device provided in this application; Figure 6 Circuit diagram of the lens mount connector for the lens aging test device provided in this application; Figure 7 Circuit diagrams of the interface subunit and power supply subunit of the lens aging test device provided in this application; Figure 8 Circuit diagram of the voltage regulator subunit of the lens aging test device provided in this application; Figure 9 Circuit diagram of the optical alarm unit of the lens aging test device provided in this application; Figure 10 Circuit diagram of the acoustic alarm unit of the lens aging test device provided in this application; Figure 11 A circuit diagram of the storage unit of the lens aging test device provided in this application; Figure 12 A flowchart illustrating the steps of the lens aging test method provided in this application; Figure 13 The flowchart for step S2 of the lens aging test method provided in this application is as follows.

[0022] Explanation of reference numerals in the attached figures: 1. Lens aging test apparatus; 2. Lens to be tested; 11. Main control unit; 111. Buttons; 12. Lens detection unit; 121. Connection subunit; 122. Detection subunit; 13. Multi-channel analog switch unit; 14. Lens mount connector; 15. Power supply unit; 151. Interface subunit; 152. Voltage regulator subunit; 153. Power supply subunit; 16. Optical alarm unit; 17. Acoustic alarm unit; 171. Buzzer; 18. Storage unit. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] Firstly, see Figures 1-11This invention discloses a lens aging test device 1, which includes a main control unit 11, a lens detection unit 12, a multi-channel analog switch unit 13, and multiple lens mount connectors 14. The main control unit 11 is connected to the lens detection unit 12, the multi-channel analog switch unit 13, and the multiple lens mount connectors 14. The multi-channel analog switch unit 13 is connected to the multiple lens mount connectors 14. One lens mount connector 14 is electrically connected to a lens 2 to be tested. The main control unit 11 and the multi-channel analog switch unit 13 transmit electrical signals. The multi-channel analog switch unit 13 controls any one or more lens mount connectors 14 to conduct the lens 2 to be tested. The lens detection unit 12 collects image information from the lens 2 to be tested. The main control unit 11 determines the operating status of the lens 2 to be tested based on the collected image information.

[0025] Specifically, the main control unit 11 generates control commands for the lens under test 2 and manages the testing process. The lens detection unit 12 acquires image data of the aperture and focus actions of the lens under test 2. The multi-channel analog switch unit 13 selectively connects multiple lens mount connectors 14 under the control of the main control unit 11, enabling sequential or parallel control of multiple lenses under test 2. The lens mount connectors 14 supply power and transmit data to the lenses under test 2. The main control unit 11 controls multiple lens mount connectors 14 through the multi-channel analog switch unit 13, with each lens mount connector 14 controlling the power supply of one lens under test 2. This allows for the control of multiple lenses under test 2 for aging tests. By utilizing the cooperation between the main control unit 11 and the multi-channel analog switch unit 13, centralized control of multiple lenses under test 2 and parallel or polling aging tests are achieved, significantly improving testing efficiency, simplifying the circuit structure, and reducing testing costs.

[0026] Furthermore, the lens aging test device 1, combined with the sound and light alarm of the buzzer 171 and LED, can promptly remind the test personnel when the lens is abnormal, reducing the risk of missed detection.

[0027] The main control unit 11 includes a drive control subunit and a status judgment subunit. The drive control subunit drives the aperture motor and focus motor of the lens, causing the lens under test 2 to repeatedly open and close and reciprocate. The status judgment subunit determines whether the lens aperture and focus are operating normally. The main control unit 11 includes a chip U1, which is an STM32F103C8T6 chip. The lens aging test device 1 includes a drive mechanism connected to the lens under test 2. The drive mechanism includes an aperture motor and a focus motor. The drive mechanism receives control signals from the main control unit 11 and drives the aperture opening and closing and focusing actions of the lens under test 2.

[0028] The lens mount connector 14 is a 10-pin interface. The fifth pin of each lens mount connector 14 is connected to the multi-channel analog switch unit 13 for transmitting electrical signals. The fourth, sixth, seventh, eighth, ninth, and tenth pins of the lens mount connector 14 are connected to the main control unit 11. The main control unit 11 can transmit signals to the corresponding lens under test 2 through the lens mount connector 14. The multi-channel analog switch unit 13 controls the power supply to the lens mount connector 14 according to the signal from the main control unit 11, thereby controlling the testing of the lens under test 2.

[0029] The multi-channel analog switch unit 13 includes a chip U3, which uses a 74HC4051D chip. The eleventh, tenth, and ninth terminals of the chip U3 are connected to the tenth, thirtieth, and thirty-first terminals of the main control unit 11, transmitting S0, S1, and S2 signals. Through the signal combination of the three terminals, any one of the first, second, fourth, fifth, twelfth, thirteenth, fourteenth, and fifteenth terminals of the chip U3 can be selected to activate a lens mount connector 14. By transmitting Y4, Y6, Y7, Y5, Y3, Y0, Y1, and Y2 signals, the operation, start-up, and shutdown actions of the lens mount connector 14 are controlled, thereby realizing the aging test of the lens 2 to be tested corresponding to the lens mount connector 14.

[0030] The lens aging test device 1 includes a power supply unit 15, which is connected to the main control unit 11. The power supply unit 15 includes an interface sub-unit 151, a voltage regulator sub-unit 152, and a power supply sub-unit 153. The interface sub-unit 151 is connected to the power supply sub-unit 153, and the power supply sub-unit 153 is connected to the voltage regulator sub-unit 152.

[0031] The interface subunit 151 includes an interface, which is a TYPE-C type interface. The interface subunit 151 is connected to an external power supply, receiving a 5V input. This 5V input is converted to 3.3V by a linear regulator to power the multi-channel analog switch unit 13, the main control unit 11, and the lens mount connector 14. The voltage regulation subunit 152 includes a first voltage regulator and a second voltage regulator. The power supply subunit 153 is connected to both the first and second voltage regulators. The first voltage regulator converts 5V to 2.8V, and the second voltage regulator converts 5V to 1.5V. The voltage regulation subunit 152 powers the lens detection unit 12. The first voltage regulator is model ME6206A28XG, and the second voltage regulator is model ME6206A15XG. The power supply subunit 153 includes a power control switch and a linear regulator U2. The power control switch is connected to the interface subunit 151. The linear regulator U2 converts the 5V power input to the interface subunit 151 into a 3V3 power supply. The power control switch can control the power supply, enabling the lens aging test device 1 to be powered on or off. The linear regulator U2 is model XC6206P332MR.

[0032] The lens detection unit 12 includes a connection subunit 121 and a detection subunit 122. The connection subunit 121 is connected to the detection subunit 122, and the detection subunit 122 is connected to the main control unit 11.

[0033] Specifically, the connection subunit 121 includes a connection terminal P2, which is directly connected to a test camera. The test camera is used to capture images of the lens under test. The test camera faces the front of the lens under test 2 to facilitate real-time acquisition of motion images of the aperture blades and focusing lens of the lens under test 2. The detection subunit 122 includes a chip U5, which transmits signals to chip U1 via I²C bus communication. The PB8 and PB9 terminals of chip U5 are connected to the PB6 and PB7 terminals of chip U1, respectively, and can send the acquired images to the main control unit 11. The chip U5 uses an STM32H750VBT6 chip and has a built-in image processing program that can perform image analysis on multiple consecutive frames of acquired images based on frame difference method combined with edge detection algorithm, or send the images to the main control unit 11 for image analysis. There is a connection between the connection terminal P2 and the chip U5 of the detection subunit 122 for signal transmission. Specifically, the W0-W9 ports on the connection terminal P2 are sequentially connected to the W0-W9 ports on the chip U5.

[0034] The lens aging test device 1 includes an optical alarm unit 16, which is connected to a multi-channel analog switch unit 13. The optical alarm unit 16 includes multiple LEDs, the number of which matches the number of lens mount connectors 14. Each LED corresponds to a lens 2 under test, indicating the working or testing status of the lens 2 under test. When the corresponding lens 2 under test is in an abnormal or working state, the LED lights up different colors to distinguish different states.

[0035] The lens aging test device 1 includes an acoustic alarm unit 17 and a buzzer 171. The acoustic alarm unit 17 is connected to the main control unit 11, and the acoustic alarm unit 17 is also connected to the buzzer 171. Specifically, the acoustic alarm unit 17 transmits signals to the main control unit 11. When the lens 2 under test exhibits an abnormal state, the main control unit 11 sends an electrical signal to the acoustic alarm unit 17. The acoustic alarm unit 17 then controls the buzzer 171 to emit a sound, thereby alerting nearby personnel to the abnormal state of the lens 2 under test.

[0036] The lens aging test device 1 includes a storage unit 18, which is connected to the lens detection unit 12. Specifically, the storage unit 18 can be connected to a memory card, and a memory card can be installed inside the device to store image data collected by the lens detection unit 12. In addition, the device can have a built-in wireless connection unit to communicate with a host computer and store the images collected by the lens detection unit 12 on the host computer.

[0037] The lens aging test device 1 includes buttons 111, which are electrically connected to the main control unit 11. Specifically, three buttons 111 are provided, which are respectively connected to the main control unit 11 and the PA1, PA2, and PA3 terminals. By cooperating with the three buttons 111, different signal combinations are formed, thereby enabling the selection of the corresponding test type for aging testing.

[0038] The lens aging test device 1 includes a display screen and a display unit connected to the display screen. Button 111 can switch the detection mode of the main control unit 11. The working mode displayed on the display unit includes focus mode, aperture mode, and simultaneous mode. In focus mode, only the focus motor is driven to move, causing the lens to reciprocate to focus. In aperture mode, only the aperture motor is driven to move, causing the aperture blades to repeatedly open and close. In simultaneous mode, the focus motor and aperture motor are driven simultaneously, and the focusing lens and aperture blades undergo synchronous aging motion.

[0039] Secondly, see Figures 12-13 This invention discloses a lens aging test method, applicable to the aforementioned lens aging test apparatus, comprising: Step S1: The lens to be tested is loaded into the lens aging test device, and images of the lens to be tested are continuously acquired within a predetermined time to obtain continuous multi-frame lens image data. Step S2: Combining the frame difference method and the edge detection method, focus motion detection and aperture motion detection processing are performed on multiple consecutive frames of lens image data to obtain real-time lens motion parameters and real-time aperture motion parameters. The real-time lens motion parameters include the number of lens reciprocating movements and the displacement amplitude, and the real-time aperture motion parameters include the number of aperture blade opening and closing and the aperture aperture change. Step S3: Preset lens motion parameter threshold and aperture motion parameter threshold. When the real-time lens motion parameter is greater than the lens motion parameter threshold and / or the real-time aperture motion parameter is greater than the aperture motion parameter threshold, the lens under test is judged to be normal and proceeds to the next lens under test. When the real-time lens motion parameter is less than the lens motion parameter threshold and / or the real-time aperture motion parameter is less than the aperture motion parameter threshold, the lens under test is judged to be abnormal. The lens aging test device issues an abnormal alarm signal and feeds back the relevant information of the lens under test to the host computer.

[0040] Specifically, in step S1, the lens to be tested is mounted and fixed on the lens mount connector of the lens aging test device. After the device is powered on and started, the camera detection module continuously captures images of the front end of the lens at a frame rate of 30-60fps within a preset test cycle, continuously acquiring multiple frames of image data containing the movement state of the lens and aperture blades. This yields a multi-frame image dataset that can be used for algorithm analysis, providing a raw, continuous, and complete visual data source for subsequent focusing and aperture action detection, ensuring that the entire movement process of the lens during the aging test can be completely recorded.

[0041] Specifically, in step S2, based on the acquired multi-frame images, the frame difference method is used to extract the change area of ​​adjacent frame images. Combined with the edge detection algorithm, the lens edge and aperture blade contour are located. The number of lens reciprocating movements, displacement amplitude, aperture blade opening and closing times, aperture change and other core motion parameters are calculated and output respectively. The image information is converted into quantifiable digital indicators, and the key motion features in lens aging test are accurately extracted to obtain objective and comparable real-time motion parameters. This realizes the automated and digital detection of focusing and aperture actions, replacing manual observation and judgment.

[0042] Specifically, in step S3, threshold values ​​for lens motion parameters and aperture motion parameters are preset. The real-time parameters obtained in step S2 are compared with the corresponding threshold values. If both parameters are greater than the threshold, the lens is determined to be normal, and the test proceeds to the next lens. If either parameter is less than the threshold, an anomaly is determined, and the device triggers an LED flashing and a buzzer audible and visual alarm, and uploads the abnormal lens number, type, time, and other information to the host computer. This method quickly completes single-lens status determination, provides immediate alarms for abnormal situations, and retains data, effectively improving test reliability, avoiding missed detections and human error, and automating the determination of abnormal states of the lens under test. It also enables real-time alerts for anomalies and traceability of test data, standardizing the aging test process.

[0043] Specifically, the lens aging device acquires multiple frames of lens image data from the lens under test. It uses a frame difference method combined with an edge detection algorithm to perform image analysis on these consecutive frames, including aperture and focus action detection, to determine if the lens under test is abnormal. If the lens is normal, the lens aging device proceeds to test the next lens. If the lens is abnormal, an alarm is issued and feedback is sent to the host computer. Using a frame difference method combined with an edge detection algorithm to detect aperture and focus actions enables automatic judgment of the lens's operating status, improving test reliability.

[0044] Step S2 specifically includes the following steps: Step S21: Extract the edge features of the focusing lens and the aperture features formed by the aperture blades from the continuous multi-frame lens image data to obtain the focusing lens image feature set and the aperture image feature set; Step S22: Calculate the displacement amplitude, motion speed, and number of reciprocating motions of the focusing lens in the image by combining the image feature set of the focusing lens, and obtain the real-time lens motion parameters; Step S23: Calculate the change in the diameter of the aperture formed during the opening and closing process by combining the aperture image feature set, and calculate the number of times the aperture blades open and close to obtain the real-time aperture motion parameters.

[0045] Specifically, in step S2, firstly, for the acquired multi-frame lens image data, image processing algorithms are used to extract the edge feature points of the focusing lens, the high-contrast contour region, and the aperture edge contour formed by the opening and closing of the aperture blades, ultimately forming a focusing lens image feature set and an aperture image feature set. Then, based on the extracted focusing lens image feature set, the positional changes of the lens in the multi-frame images are tracked, the displacement amplitude and motion speed of the lens are calculated, and the number of reciprocating movements within a preset period is counted, integrating them to obtain real-time lens motion parameters. Finally, based on the aperture image feature set, the diameter change and area change amplitude of the aperture during the opening and closing process of the aperture blades are detected and calculated, while the number of complete opening and closing of the aperture blades within the preset period is counted, ultimately obtaining the real-time aperture motion parameters.

[0046] This process involves extracting core feature information about focusing and aperture movements from the original image, removing background interference, and performing feature-based preprocessing of the image data. This identifies key detection targets for the lens elements and aperture, improving the accuracy and stability of subsequent parameter calculations. The mechanical motion of the lens elements is converted into quantifiable digital parameters, fully characterizing the actual operating state of the focusing motor during aging tests. Objective and accurate quantitative indicators of lens motion are output, providing a comparable basis for determining whether the lens focusing function is normal. The movement amplitude and frequency of the aperture motor and blade mechanism are quantified, reflecting the actual working state of the aperture mechanism during aging tests, providing accurate and reproducible numerical evidence for determining aperture malfunctions.

[0047] As one example, when focusing motion detection is performed on multiple consecutive frames of lens image data, if the detected position change of multiple consecutive frames approaches zero, that is, the displacement amplitude is close to zero, it can be considered that the focusing lens is stuck and can be determined as an abnormal focusing motion.

[0048] As one example, aperture movement detection is performed on continuous multi-frame lens image data. In image feature detection, if the aperture blades are detected to be shaking or stuck, it can be determined that the aperture movement is abnormal.

[0049] As one embodiment, for continuous multi-frame lens image data, focus action detection processing and aperture action detection processing can be performed simultaneously, or one of focus action detection processing and aperture action detection processing can be performed. The main control unit adjusts the type of detection processing of the device according to the type of signal transmitted by the button to meet the different detection requirements of the lens under test.

[0050] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0056] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims and their equivalents, this invention also intends to include these modifications and variations.

[0057] The above description describes specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A lens aging test device, characterized in that, It includes a main control unit, a lens detection unit, a multi-channel analog switch unit, and multiple lens mount connectors. The main control unit is connected to the lens detection unit, the multi-channel analog switch unit, and the multiple lens mount connectors. The multi-channel analog switch unit is connected to the multiple lens mount connectors. One lens mount connector is electrically connected to one lens under test. The main control unit transmits electrical signals to the multi-channel analog switch unit. The multi-channel analog switch unit controls one or more lens mount connectors to connect the lens under test. The lens detection unit collects image information from the lens under test. The main control unit determines the operating status of the lens under test based on the collected image information.

2. The apparatus according to claim 1, characterized in that, Includes a power supply unit, which is connected to the main control unit; The power supply unit includes an interface subunit, a voltage regulator subunit, and a power supply subunit. The interface subunit is connected to the power supply subunit, and the power supply subunit is connected to the voltage regulator subunit.

3. The apparatus according to claim 1, characterized in that, The power supply subunit includes a power control switch, which is connected to the interface subunit. The interface subunit includes an interface, which adopts a TYPE-C interface.

4. The apparatus according to claim 1, characterized in that, The lens detection unit includes a connection subunit and a detection subunit. The connection subunit is connected to the detection subunit, and the detection subunit is connected to the main control unit.

5. The apparatus according to claim 1, characterized in that, It includes an optical alarm unit, which is connected to a multi-channel analog switch unit.

6. The apparatus according to claim 1, characterized in that, It includes an acoustic alarm unit and a buzzer, with the acoustic alarm unit connected to the main control unit and the acoustic alarm unit connected to the buzzer.

7. The apparatus according to claim 1, characterized in that, It includes a storage unit, which is connected to the lens detection unit.

8. The apparatus according to claim 1, characterized in that, This includes buttons, which are electrically connected to the main control unit.

9. A lens aging test method, applicable to the lens aging test apparatus of any one of claims 1-8, characterized in that, include, The lens to be tested is loaded into the lens aging test device, and images of the lens to be tested are continuously acquired within a predetermined time to obtain continuous multi-frame lens image data. Combining frame difference method and edge detection method, focusing motion detection and aperture motion detection processing are performed on continuous multi-frame lens image data to obtain real-time lens motion parameters and real-time aperture motion parameters. The real-time lens motion parameters include the number of lens reciprocating motions and displacement amplitude, while the real-time aperture motion parameters include the number of aperture blade opening and closing and the amount of aperture aperture change. The system presets threshold values ​​for lens motion parameters and aperture motion parameters. When the real-time lens motion parameters are greater than the threshold values ​​and / or the real-time aperture motion parameters are greater than the threshold values, the lens under test is determined to be normal, and the test proceeds to the next lens under test. When the real-time lens motion parameters are less than the threshold values ​​and / or the real-time aperture motion parameters are less than the threshold values, the lens under test is determined to be abnormal, and the lens aging test device issues an abnormal alarm signal and feeds back the relevant information of the lens under test to the host computer.

10. The method according to claim 9, characterized in that, Combining frame difference and edge detection methods, focusing motion detection and aperture motion detection are performed on multiple consecutive frames of lens image data to obtain real-time lens motion parameters and real-time aperture motion parameters. Specifically, the steps include: Extract the edge features of the focusing lens and the aperture features formed by the aperture blades from a series of consecutive lens image data to obtain the focusing lens image feature set and the aperture image feature set. By combining the image feature set of the focusing lens, the displacement amplitude, motion speed and reciprocating motion number of the focusing lens in the image are calculated to obtain the real-time lens motion parameters; The diameter change of the aperture formed during the opening and closing process is calculated by combining the aperture image feature set, and the number of aperture blade opening and closing is calculated to obtain the real-time aperture motion parameters.

Images