Automatic testing device and method for optical performance of operating shadowless lamp and control system

Abstract

The invention relates to an automatic testing device and method for the optical performance of an operating shadowless lamp and a control system, and the device comprises a shadowless lamp fixing rack which is used for detachably fixing the operating shadowless lamp to be tested in a horizontal installation manner, and enabling the optical axis of the operating shadowless lamp to be horizontally arranged; the moving rack and the operating shadowless lamp fixing rack are arranged in a split mode; the three-dimensional linear module is mounted on the moving rack; the illuminometer is mounted on the moving end of the three-dimensional linear module through a fixing device; the control unit is in communication connection with the driving motor of the three-dimensional linear module and the illuminometer; wherein the control unit is configured to execute an automatic test step, and the automatic test step comprises the steps of controlling the illuminometer to move according to a preset scanning track so as to collect illumination data, and calculating optical performance parameters of the operating shadowless lamp based on the data. The operating shadowless lamp optical performance testing device achieves efficient, high-repeatability and high-precision automatic testing of the optical performance of the operating shadowless lamp, and is particularly suitable for rapid quality inspection on a production line.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical instrument testing, in particular to an automatic testing device and method for optical performance of a surgical shadowless lamp, and a control system. BACKGROUND

[0002] The surgical shadowless lamp is the core equipment in the modern operating room, and its optical performance, such as center illuminance, light spot diameter, light column depth and shadowless rate, is directly related to the clarity of the surgical field and the operation accuracy of the doctor. Therefore, it is crucial to accurately and efficiently test the optical performance of the shadowless lamp in the production and quality inspection of the shadowless lamp. At present, the testing of the surgical shadowless lamp in the industry generally relies on manual operation, and the testing device is mostly of a vertical structure. This structure requires the shadowless lamp to be installed vertically at a high place, which not only puts strict requirements on the space height of the testing site, but also increases the complexity and inconvenience of the installation and fixation of the shadowless lamp. More importantly, the existing testing method highly depends on the experience and subjective judgment of the operator, for example, the position of the illuminance meter needs to be adjusted manually to find the maximum illuminance point, and the data is recorded manually. Such a human-led testing process has inherent defects such as low efficiency, complicated operation, poor repeatability of test results and easy introduction of human errors, and it is difficult to meet the urgent needs of rapid and standardized quality control of batch products on the production line. Therefore, the industry urgently needs a new testing scheme that can realize the rapid installation of the shadowless lamp and the full automation of the testing process, and the results are accurate and reliable. SUMMARY

[0003] Therefore, it is necessary to provide an automatic testing device and method for optical performance of a surgical shadowless lamp, and a control system to solve the problems of low efficiency, complicated operation, poor repeatability of test results and easy introduction of human errors in the human-led testing process.

[0004] An automatic testing device for optical performance of a surgical shadowless lamp, comprising: a shadowless lamp fixing rack for detachably fixing a to-be-tested surgical shadowless lamp in a horizontal installation manner, so that the optical axis of the surgical shadowless lamp is arranged horizontally; a motion rack separately arranged from the surgical shadowless lamp fixing rack; a three-dimensional linear module installed on the motion rack; an illuminance meter installed on the moving end of the three-dimensional linear module through a fixing device; a control unit in communication connection with the drive motor of the three-dimensional linear module and the illuminance meter; wherein the control unit is configured to execute an automatic testing step, the automatic testing step comprising: setting optical parameters of the surgical shadowless lamp, controlling the illuminance meter to move according to a preset scanning track to collect illuminance data, and calculating optical performance parameters of the surgical shadowless lamp based on the data.

[0005] In one embodiment, the three-dimensional linear module comprises a Z-axis module parallel to the optical axis and horizontally mounted on the motion stage, an X-axis module horizontally orthogonal to the Z-axis and mounted on the moving end of the Z-axis module, and a Y-axis module vertically orthogonal to the X-axis and mounted on the moving end of the X-axis module; the illuminometer is mounted on the moving end of the Y-axis module.

[0006] In one embodiment, the shadowless lamp fixing stage is detachably connected with the motion stage through a buckle type or plug-in type structure; and / or, the shadowless lamp fixing stage is provided with at least one light shield plate and / or an adjustable adapter assembly to adapt to different models of surgical shadowless lamps.

[0007] In one embodiment, when performing the automatic test step, the control unit is configured to: control the motion of the illuminometer to find and locate a maximum central illuminance point of the surgical shadowless lamp in a plane perpendicular to the optical axis; and perform at least one of spot diameter measurement, light column depth measurement and shadowless rate measurement based on the maximum central illuminance point.

[0008] In one embodiment, when finding the maximum central illuminance point, the control unit is configured to: control the illuminometer to scan in the X-axis direction at a preset Z-axis position to find a first maximum illuminance point and a corresponding X-coordinate; keep the X-coordinate unchanged and scan in the Y-axis direction to find a second maximum illuminance point and a corresponding Y-coordinate to obtain a coarse positioning point; and control the illuminometer to perform ring scanning in the XY plane with the coarse positioning point as the center to find a global maximum illuminance point and a corresponding central illuminance value.

[0009] In one embodiment, when performing spot diameter measurement, the control unit is configured to: control the illuminometer to perform radial scanning in multiple directions in the XY plane based on the global maximum illuminance point, and calculate the spot diameter based on the position coordinates at which the illuminance value drops to a certain percentage; and / or, when performing light column depth measurement, the control unit is configured to: control the illuminometer to move in the positive and negative directions of the Z-axis based on the global maximum illuminance point, and calculate the light column depth based on the position coordinates at which the illuminance value drops to a certain percentage; and / or, when performing shadowless rate measurement, the control unit is configured to: control the light shield plate to move into the light path of the surgical shadowless lamp; control the illuminometer to collect the post-shading illuminance value at a certain position under the shading of the light shield plate; and calculate the shadowless rate of the surgical shadowless lamp based on the post-shading illuminance value and the central illuminance value without shading.

[0010] An automatic testing method for optical performance of a surgical shadowless lamp, adopting the device of any one of the above embodiments, the method comprising: fixing a to-be-tested surgical shadowless lamp in a horizontal installation manner on a shadowless lamp fixing rack, so that an optical axis of the surgical shadowless lamp is horizontal; controlling a three-dimensional linear module to drive an illuminometer to move, to find and locate a maximum central illuminance point of an irradiation field of the surgical shadowless lamp; taking the maximum central illuminance point as a reference, controlling the illuminometer to perform a preset scanning action, to collect illuminance data, and based on the collected illuminance data, calculating optical performance parameters of the surgical shadowless lamp.

[0011] In one embodiment, the control of the three-dimensional linear module to drive the illuminometer to move to find and locate the maximum central illuminance point of the irradiation field of the surgical shadowless lamp comprises: controlling the illuminometer to scan along an X-axis direction at a preset Z-axis position to find a first maximum illuminance point and a corresponding X coordinate; keeping the X coordinate unchanged, scanning along a Y-axis direction to find a second maximum illuminance point and a corresponding Y coordinate, to obtain a coarse positioning point; taking the coarse positioning point as a center, controlling the illuminometer to perform a ring scanning in an XY plane to find a global maximum illuminance point and a corresponding central illuminance value.

[0012] In one embodiment, the taking the maximum central illuminance point as a reference, the control of the illuminometer to perform a preset scanning action to collect illuminance data, and the calculation of optical performance parameters of the surgical shadowless lamp based on the collected illuminance data comprises: taking the maximum central illuminance point as a reference, performing at least one of a light spot diameter measurement, a light column depth measurement, and a shadowless rate measurement; wherein the light spot diameter measurement step comprises: taking the global maximum illuminance point as a base point, controlling the illuminometer to perform a radial scanning in the XY plane along at least four different directions, and recording position coordinates at which an illuminance value drops to 50% and / or 10% of the central illuminance value in each direction to calculate a light spot diameter; the light column depth measurement step comprises: taking the global maximum illuminance point as a base point, controlling the illuminometer to move along a Z-axis positive and negative direction, and recording two position coordinates at which an illuminance value drops to 20% of the central illuminance value in the Z-axis direction to calculate a light column depth; and the shadowless rate measurement step comprises: controlling a light blocking plate to move into a light path of the surgical shadowless lamp; under the blocking of the light blocking plate, controlling the illuminometer to collect an illuminance value after blocking at a specific position; based on the illuminance value after blocking and the central illuminance value without blocking, calculating to obtain a shadowless rate of the surgical shadowless lamp.

[0013] A control system comprising at least one processor and a memory, the memory storing a computer program which, when executed by the processor, implements the steps of any one of the above method embodiments.

[0014] The automatic testing device and method, and the control system for the optical performance of the operating shadowless lamp solve the problems of inconvenient installation, high site requirement and vibration interference in the prior art by designing the installation mode of the shadowless lamp as a horizontal type and combining the split layout of the moving gantry and the fixed gantry. Further, a complete automatic testing system is constructed by integrating the three-dimensional linear module driven by the control unit and the illuminometer. The system can replace manual operation to perform complex and repetitive scanning and data acquisition tasks, and perform parameter calculation based on an algorithm, so as to fundamentally overcome the error and low efficiency caused by manual operation, realize efficient, highly repetitive and highly accurate automatic testing of the optical performance of the operating shadowless lamp, and is particularly suitable for rapid quality inspection on a production line. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structural diagram of the automatic testing device provided by an embodiment of the present application is shown in the figure. Figure 2 A flowchart of the automatic testing method provided by an embodiment of the present application is shown in the figure. Figure 3 A flowchart of the automatic testing method provided by another embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0016] In order to make the above objectives, characteristics and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0017] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0018] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one feature. In the description of the present application, if there are terms "a plurality of", the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0019] In the present application, unless otherwise expressly specified and limited, if there are terms "installation", "connection", "connection", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise expressly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] In the present application, unless otherwise expressly specified and limited, if there are similar descriptions such as "first feature on" or "second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" of the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0021] It should be noted that if an element is referred to as "fixed to" or "provided to" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for the purpose of description, and do not represent the only implementation.

[0022] The present embodiment provides an automatic testing device for the optical performance of a surgical shadowless lamp. As shown in the figure, the device is composed of a shadowless lamp fixing rack 11, a moving rack 12, a three-dimensional linear module 13, an illuminometer 14 and a control unit (not shown). Figure 1

[0023] ​The shadowless lamp fixing rack 11 is used to detachably fix the to-be-tested surgical shadowless lamp 2 in a horizontal mounting manner. The horizontal mounting manner here refers to setting the posture of the surgical shadowless lamp to be such that the optical axis thereof is in or substantially in the horizontal direction, which is in sharp contrast to the vertical mounting in the conventional test in which the shadowless lamp is vertically downwardly irradiated. The design reduces the height requirement of the test device on the site space and makes the clamping and positioning operation of the shadowless lamp more convenient, which can be directly performed from the side without high-altitude operation.

[0024] The motion rack 12 and the shadowless lamp fixing rack 11 are arranged in a split type. That is, the two are independent mechanical structures rather than an integral frame. The split design can effectively isolate the vibration generated by the motion rack 12 during three-dimensional motion, prevent the vibration from being directly transmitted to the shadowless lamp fixing rack 11, and thus avoid the small displacement or light path change of the shadowless lamp due to the vibration, thereby ensuring the stability and accuracy of the test data. Moreover, the split structure facilitates the modular transportation and on-site rapid layout of the device, and improves the site adaptability of the equipment.

[0025] The three-dimensional linear module 13 is installed on the motion rack 12, and functions to provide a platform capable of precise positioning and motion in three-dimensional space. The module can be assembled from three independent single-axis linear modules (for example, modules corresponding to X, Y and Z directions) according to a specific spatial geometric relationship, or can be an integrally formed three-dimensional motion mechanism. The driving mode can be a servo motor, a stepper motor, etc., and the transmission mode can be a precision transmission form such as a ball screw or a synchronous belt, so as to ensure the stability and positioning accuracy of the motion.

[0026] The illuminometer 14 is installed on the moving end of the three-dimensional linear module 13 through a fixing device (for example, a special clamp or mounting plate). Thus, the illuminometer 14 becomes the end effector of the three-dimensional linear module 13, and the spatial position thereof can be accurately controlled by the three-dimensional linear module 13, so as to be able to traverse any to-be-tested point in the shadowless lamp illumination field.

[0027] The control unit is in communication connection with the driving motor of the three-dimensional linear module 13 and the illuminometer 14. The function of the control unit is to execute a preset automatic test process. The process specifically includes: setting the optical parameters such as the light spot, illumination, color temperature of the surgical shadowless lamp, controlling the three-dimensional linear module 13 to drive the illuminometer 14 to move in the illumination space of the shadowless lamp according to a preset scanning track (for example, linear scanning, ring scanning, grid scanning or a combination thereof); in this process, the illumination data collected by the illuminometer 14 is acquired in real time or synchronously; finally, based on the acquired illumination data, one or more optical performance parameters of the surgical shadowless lamp are automatically calculated and output by the embedded algorithm, such as the center illumination, the light spot diameter, the illumination uniformity, the light column depth, etc.

[0028] It should be noted that the illumination data collected by the illuminometer 14 is an analog signal, and the above device can further include a collection module that obtains the illumination data of the illuminometer 14 through a collection card, and the control unit is in communication connection with the collection module to obtain the illumination data of the illuminometer 14.

[0029] In summary, the present embodiment solves the problems of inconvenient installation, high site requirement and vibration interference of the prior art by designing the installation mode of the shadowless lamp as a horizontal type and combining the split layout of the moving gantry and the fixed gantry. Further, by integrating the three-dimensional linear module driven by the control unit and the illuminometer, a complete automatic test system is constructed. The system can replace manual operation to perform complex and repetitive scanning and data collection tasks, and perform parameter calculation based on algorithms, thereby fundamentally overcoming the errors and inefficiencies introduced by human operation, and realizing efficient, high-repetitive and high-precision automatic testing of the optical performance of the surgical shadowless lamp, which is particularly suitable for rapid quality inspection on the production line.

[0030] In one embodiment, the specific configuration of the three-dimensional linear module 13 is specifically defined. The module is composed of three linear motion units: a Z-axis module 131, an X-axis module 132 and a Y-axis module 133. The Z-axis module 131 is arranged parallel to the optical axis of the surgical shadowless lamp (i.e. in the Z-axis direction) and is fixedly installed horizontally on the base or bottom of the moving gantry. This design ensures that the movement direction of the Z-axis module 131 is consistent with the optical axis direction, enabling the illuminometer to move along the optical axis direction, which is crucial for measuring parameters such as light column depth that vary along the optical axis direction.

[0031] On the moving end of the Z-axis module 131, the X-axis module 132 is installed through mechanical connection. The X-axis module 132 is arranged perpendicular to the Z-axis in the horizontal plane, i.e. both are in the horizontal plane, but the movement directions are perpendicular to each other. This layout enables the components installed on the moving end of the X-axis module 132 to move horizontally (i.e. in the X-axis direction) perpendicular to the optical axis direction in the horizontal plane.

[0032] On the moving end of the X-axis module 132, the Y-axis module 133 is installed vertically. The movement direction of the Y-axis module 133 is perpendicular to the X-axis and is specifically arranged in the vertical direction. This arrangement enables the illuminometer finally installed on the moving end of the Y-axis module 133 to move up and down (i.e. in the Y-axis direction) in the vertical plane.

[0033] In summary, this embodiment, by employing this specific axis stacking order and spatial orientation, constructs a Cartesian coordinate system measurement space that highly matches the optical characteristics of a horizontally mounted shadowless lamp. This structure ensures that the illuminance meter can accurately locate any point in the light field, particularly facilitating high-precision two-dimensional scanning in the vertical plane perpendicular to the optical axis (i.e., the XY plane) to locate the center of the light spot and measure its diameter; simultaneously, it can independently move along the horizontal optical axis (Z-axis) to measure the depth of the light column. This well-defined and optimized mechanical structure provides a solid hardware foundation for the accurate and reliable execution of the entire automated testing process.

[0034] In one embodiment, the connection between the fixed and moving platforms of the shadowless lamp, as well as the additional functions of the fixed platform itself, have been optimized. The fixed and moving platforms are detachably connected via a snap-fit ​​or plug-in structure. This quick-connect mechanism allows the two platforms to be assembled into a stable whole during testing and to be quickly separated during transport or storage, greatly improving the mobility and site adaptability of the device and overcoming the disadvantages of bulky and inconvenient-to-move integrated structures.

[0035] At least one light-blocking plate 16 is integrated on the shadowless lamp mounting frame. The light-blocking plate 16 can be moved into the optical path of the shadowless lamp by the control unit or manual operation to simulate the blocking of light by the doctor's head or instruments during surgery, thereby providing the necessary physical conditions for the automated measurement of the shadowless lamp's key optical indicator, the shadowless rate.

[0036] The surgical light fixture is also equipped with an adjustable adapter assembly. This assembly can be a series of adapters with different interfaces, or a universal clamp with adjustable mechanisms such as sliders, universal joints, and fastening bolts. Its purpose is to reliably clamp and secure surgical lights of different brands, models, and mounting interface sizes. This design significantly improves the versatility of the testing device, enabling it to adapt to a wide variety of surgical lights under test. It solves the problem of the narrow application range of dedicated testing benches and is ideal for production lines or quality control centers that need to test multiple models of surgical lights.

[0037] In one embodiment, the control unit is configured to execute a highly intelligent automated testing process. When executing the automated testing process, the control unit is configured to: control the movement of the illuminance meter to automatically locate and position the maximum center illuminance point of the surgical shadowless lamp in a plane perpendicular to the optical axis; and, using the maximum center illuminance point as a reference, perform at least one of spot diameter measurement and beam depth measurement.

[0038] The process begins with automatically finding and locating the point of maximum center illuminance. Specifically, the control unit precisely controls the movement of the illuminance meter in three-dimensional space by sending pulse commands to the drive motor of the three-dimensional linear module. Its primary goal is to find and locate the point of maximum center illuminance of the surgical lamp in a plane perpendicular to the optical axis. This plane corresponds to the vertical plane spanned by the X and Y axes in the device. The control unit drives the illuminance meter to systematically scan this plane and reads the illuminance meter readings in real time, using a comparison algorithm to determine the spatial coordinates of the point with the maximum illuminance value. This step is the cornerstone of the entire automated testing process because it transforms the traditional, vague center-finding process, which relies on human observation and repeated manual adjustments, into a precise and repeatable operation driven by a program and based on objective data, thus establishing a unified and accurate benchmark for all subsequent quantitative measurements.

[0039] After successfully establishing the reference point, the control unit immediately enters the parameter measurement phase, which involves performing at least one of two measurements: spot diameter measurement and beam depth measurement, using the maximum center illuminance point as the reference. In other words, the device can flexibly select test items according to preset tasks. For example, when measuring the spot diameter, the control unit controls the illuminance meter to move along multiple radial directions in the XY plane, using the found center point as the origin, until it detects that the illuminance value has decayed to a specific threshold (e.g., 50% of the center illuminance). The spot diameter is calculated by recording the coordinates of these boundary points. When measuring the beam depth, the control unit controls the illuminance meter to move along the Z-axis parallel to the optical axis, using the found center point as the origin, searching for two positions before and after the illuminance value decays to the specific threshold (e.g., 20% of the center illuminance). The distance between these two positions is the beam depth. This modular measurement design allows the device to efficiently and specifically complete the required performance evaluation.

[0040] In one embodiment, the process of finding the maximum center illuminance point is specified as a two-level optimization search algorithm consisting of a coarse positioning step and a precise positioning step. When searching for the maximum center illuminance point, the control unit is configured to execute: a coarse positioning step: controlling the illuminance meter to scan along the X-axis at a preset Z-axis position to find the first maximum illuminance point and its corresponding X coordinate; keeping the X coordinate unchanged, scanning along the Y-axis to find the second maximum illuminance point and its corresponding Y coordinate, thus obtaining the coarse positioning point; a precise positioning step: using the coarse positioning point as the center, controlling the illuminance meter to perform a circular scan in the XY plane to find the global maximum illuminance point and its corresponding center illuminance value.

[0041] In the coarse positioning step, the control unit first positions the illuminance meter at a preset Z-axis position along the optical axis, typically based on the nominal operating distance of the shadowless lamp. Then, the control unit drives the illuminance meter to perform a one-dimensional linear scan along the X-axis, recording illuminance values ​​in real time. By comparison, the first maximum illuminance point on this straight path is found, and its X-coordinate is locked. Next, keeping this X-coordinate unchanged, the control unit drives the illuminance meter to perform another one-dimensional linear scan along the Y-axis, similarly finding the second maximum illuminance point on this path and locking its Y-coordinate. The resulting coordinate point is defined as the coarse positioning point. This strategy, through two orthogonal one-dimensional scans, quickly narrows the search range from a two-dimensional plane to a hotspot area with minimal movement path, greatly improving search efficiency and avoiding time-consuming and lengthy full-area two-dimensional scans. In some other methods, the illuminance meter can also be driven to perform a one-dimensional linear scan along the Y-axis first, and then driven to perform a one-dimensional linear scan along the X-axis.

[0042] However, since the light spot of the shadowless lamp may not be perfectly symmetrical, and the point of maximum illuminance may not exactly lie at the intersection of two orthogonal scans, the coarse positioning point may not be the true global optimum. Therefore, a precise positioning step is performed. In this step, the control unit controls the illuminance meter to perform a circular scan path in the XY plane, centered on the coarse positioning point. The radius of this circular path is set to ensure that it covers all potential optima around the coarse positioning point. The control unit drives the illuminance meter to move along this circular path, continuously collecting illuminance data, and uses an algorithm to find the global maximum illuminance point collected along the entire circular path, along with its precise coordinates and the corresponding central illuminance value. This composite search strategy of rapid convergence followed by local refinement achieves the best balance between computational resources and mechanical movement time. It ensures the final positioning accuracy while significantly reducing positioning time compared to fine two-dimensional grid scanning, thus significantly improving overall testing efficiency.

[0043] In one embodiment, the specific algorithms for the control unit to perform spot diameter measurement and beam depth measurement are further clarified. When performing spot diameter measurement, the control unit is configured to: use the global maximum illuminance point as a base point, control the illuminance meter to perform radial scanning in multiple directions within the XY plane, and calculate the spot diameter based on the position coordinates where the illuminance value drops to a specific percentage; and / or, when performing beam depth measurement, the control unit is configured to: use the global maximum illuminance point as a base point, control the illuminance meter to move along the positive and negative directions of the Z-axis, and calculate the beam depth based on the position coordinates where the illuminance value drops to a specific percentage; and / or, control the light-blocking plate to move into the optical path of the surgical shadowless lamp; under the obstruction of the light-blocking plate, control the illuminance meter to collect the illuminance value after obstruction at a specific position; and calculate the shadowless rate of the surgical shadowless lamp based on the illuminance value after obstruction and the center illuminance value without obstruction.

[0044] During spot diameter measurement, the control unit uses the identified global maximum illuminance point as a spatial reference point and drives the illuminance meter to move radially in a linear fashion along multiple preset directions (e.g., four or eight directions in a star-shaped pattern) within the XY plane perpendicular to the optical axis. Along each radial path, the control unit monitors the illuminance value in real time and precisely records the coordinates of the position corresponding to the illuminance value decreasing to a specific percentage of the central illuminance value (e.g., 50% or 10%, commonly used in industry standards). By acquiring the coordinates of such boundary points in at least two opposite directions, the spot width in that direction can be calculated. By combining data from all measurement directions, the average diameter of the spot can be calculated, or an approximate outline of an irregular spot can be drawn. This objective determination method based on a fixed percentage threshold completely replaces the traditional method of manually estimating the spot edge, ensuring the consistency and repeatability of the measurement results.

[0045] Accordingly, when measuring the light column depth, the control unit also uses the global maximum illuminance point as the base point, but controls the illuminance meter to move along the Z-axis parallel to the optical axis, moving towards and away from the shadowless lamp (i.e., in both positive and negative directions). During this process, the control unit continuously collects illuminance data and records the coordinates of two positions in the positive and negative directions of the Z-axis when the illuminance value drops to another specific percentage of the center illuminance value (e.g., 20%, commonly used in industry standards). The distance between these two coordinate points is defined as the light column depth of the shadowless lamp. This measurement process is entirely controlled by the program, eliminating random errors caused by human judgment of the operation endpoint.

[0046] It is worth emphasizing that the specific percentage in this embodiment is a configurable parameter. The control unit's software interface or configuration file allows users to flexibly set these percentage thresholds according to different test standards or the specific model of the shadowless lamp (e.g., setting the threshold for spot diameter to 50% and the threshold for beam depth to 20%). This design gives the testing device a high degree of adaptability and flexibility, enabling it to meet the testing needs of different customers and different standards, rather than adhering to a single standard. By parameterizing the measurement logic, the device achieves both full automation of the testing process and flexible adaptation to various test specifications.

[0047] Accordingly, during shadowlessness rate measurement, the control unit first controls a drive mechanism (such as a small linear motor or rotary servo) to move the light-blocking plate into the main light path of the surgical shadowless lamp, simulating the obstruction caused by the doctor's head. Then, with the light-blocking plate in place, the control unit controls the illuminance meter to move to one or more specific preset positions (e.g., the original center illuminance point or other key points within the light spot) to collect the illuminance value after obstruction. Finally, based on the collected illuminance value after obstruction and the previously stored center illuminance value without obstruction, the control unit automatically calculates the shadowlessness rate according to the definition formula (e.g., shadowlessness rate = (1 - illuminance after obstruction / illuminance without obstruction) × 100%). This integrated measurement process automates the complex process that originally required manual placement of obstructions, data reading, and calculation, eliminating random errors introduced by human operation.

[0048] In summary, this embodiment, by configuring the control unit with the aforementioned precise scanning logic and calculation algorithm, achieves efficient, objective, and consistent automated testing of multiple core optical performance parameters of the surgical shadowless lamp. This one-click integrated measurement capability not only frees operators from tedious and repetitive labor, but more importantly, it ensures a high degree of repeatability and comparability of test results through standardized testing procedures. This provides reliable data support for the production quality control and performance evaluation of the shadowless lamp, solving the industry pain points of low efficiency and inconsistent results inherent in traditional manual testing methods.

[0049] In one embodiment, the control unit also communicates with the controller of the surgical shadowless lamp under test to automatically adjust at least one parameter of the lamp's illumination intensity, spot size, and color temperature. In an embodiment designed for fully automated testing, the control unit establishes a bidirectional communication connection with the internal control unit of the surgical shadowless lamp under test via a wired or wireless communication interface. This allows the testing device to not only passively measure but also actively control the state of the tested object. During the testing process, the control unit can send standardized commands to the shadowless lamp to automatically adjust its operating parameters. For example, it can instruct the shadowless lamp to switch between different illumination intensity levels, such as maximum brightness, standard brightness, and energy-saving brightness, to test its optical performance under different outputs. Furthermore, it can control the main and secondary reflector systems driven by the lamp's motor to change the spot size, thereby measuring the illuminance distribution and beam depth in various modes, from large to small spots. In addition, for shadowless lamps with color temperature adjustment capabilities, the control unit can also instruct them to operate at different color temperatures. In this way, the device can automatically and continuously traverse all key operating modes of the shadowless lamp and record the optical performance data under each set of parameters, ultimately generating a comprehensive, multi-dimensional test report. This solves the problem of manually switching modes repeatedly on the shadowless lamp panel in traditional testing, realizing end-to-end automation from equipment control to data acquisition, greatly improving testing efficiency, and is especially suitable for the full inspection process of factory products.

[0050] In some embodiments, an image acquisition module is also included, wherein the optical axis of the image acquisition module is arranged parallel to the detection direction of the illuminance meter; the control unit is further configured to: control the image acquisition module to acquire the light spot image of the surgical shadowless lamp; obtain the initial coordinates of the light spot brightness center by performing image analysis on the light spot image; control the three-dimensional linear module to move the illuminance meter to the vicinity of the initial coordinates based on the initial coordinates, and then perform precise positioning scanning.

[0051] The device incorporates an image acquisition module, such as a high dynamic range camera, near the illuminance meter, ensuring its optical axis is parallel to the illuminance meter's detection direction. This module is coordinated and controlled by the control unit. Before initiating a precise illuminance meter scan, the control unit first triggers the image acquisition module to capture a complete image of the light spot formed by the shadowless lamp illuminating the diffuse screen or directly at its working distance. Subsequently, the control unit runs an image processing algorithm to analyze the captured light spot image. This algorithm may first perform grayscale conversion and filtering noise reduction preprocessing, and then quickly calculate the initial coordinates of the light spot's brightness center by calculating the image's grayscale centroid or finding the region of maximum brightness pixels. This image positioning process can be completed within milliseconds. The control unit then uses this initial coordinate to drive the 3D linear module to move the illuminance meter directly to a starting point near those coordinates (e.g., coinciding with or offsetting the calculated center point by a small distance), and then initiates the precise positioning scan process described in the above embodiment. This strategy, combining visual coarse positioning with lux meter fine measurement, frees the lux meter from time-consuming, large-scale blind searches, allowing it to directly perform precise measurements. This reduces the total time spent finding the center point by an order of magnitude. Furthermore, the acquired light spot images themselves can be used to analyze subjective quality indicators such as the roundness, uniformity, and presence of ghosting or obvious color spots, providing an additional dimension for product quality control.

[0052] In one embodiment, a standard reference light source is also included, which is fixedly mounted on the motion platform; the control unit is further configured to: before or after the test, control the three-dimensional linear module to move the illuminance meter to the front of the standard reference light source for calibration measurement; and compensate the illuminance meter's measurement data based on the calibration measurement results.

[0053] The device integrates a standard reference light source in a fixed position on the base or frame of a motion platform, unobstructed by moving parts. This reference light source is a highly stable light source with a known and traceable spectral power distribution and luminous intensity, such as a calibrated LED standard lamp. The control unit is configured to automatically perform a calibration procedure before or after executing a shadowless lamp test sequence: controlling a three-dimensional linear module to precisely move the illuminance meter directly in front of the standard reference light source, ensuring optical axis alignment, and acquiring a set of illuminance readings after stabilization. The control unit compares the measured values ​​from the illuminance meter with the known standard values ​​of the standard reference light source, calculating the calibration coefficient (e.g., a scaling factor or offset) of the illuminance meter in the current state. Subsequently, in all subsequent tests of the shadowless lamps, the control unit uses this calibration coefficient to perform real-time or post-processing corrections to all raw data acquired by the illuminance meter. This built-in self-calibration function effectively eliminates systematic errors caused by illuminance meter performance drift, environmental temperature changes, or component aging, ensuring the accuracy of measurement data throughout the test device's lifespan and the consistency of data across different times and devices.

[0054] This embodiment provides an automated testing method for the electrical performance of surgical shadowless lamps, employing the apparatus of any of the above embodiments, such as... Figure 2 As shown, the steps include: Step 201: Fix the surgical shadowless lamp to be tested on the shadowless lamp mounting frame in a horizontal installation manner, so that the optical axis of the surgical shadowless lamp is horizontal.

[0055] First, the operator detachably mounts the surgical light under test onto the light mounting stand in a horizontal position. This horizontal mounting specifically refers to the use of clamps and positioning mechanisms on the stand to set and maintain the light's main optical axis in a horizontal direction after installation. This mounting configuration is the basis for this method's difference from traditional vertical testing, significantly reducing the complexity of the installation operation and the space requirements of the testing environment. Operators do not need to lift the light or secure it at a height, and the testing device itself does not require a large structural height, allowing testing activities to be conveniently carried out in a standard laboratory space.

[0056] Step 202: Control the three-dimensional linear module to drive the illuminance meter to move and automatically find and locate the maximum center illuminance point of the surgical shadowless lamp irradiation field.

[0057] Once installed, the system enters an automated testing cycle led by the control unit. The first step involves controlling the 3D linear module to move the lux meter, automatically finding and locating the maximum center illuminance point within the surgical shadowless lamp irradiation field. This step is achieved by the control unit sending precise displacement commands to the drive motors of each axis of the 3D linear module. The goal is to objectively determine the precise location of the brightest point in the light field within three-dimensional space, replacing human observation and manual adjustment, through instrument scanning and algorithmic judgment. Specifically, the control unit drives the lux meter to scan within a specific spatial range according to a preset search strategy. For example, it might first perform a two-dimensional scan on a preset Z-axis (optical axis direction) plane, reading the lux meter's feedback data in real time and running a comparison algorithm to identify the peak point of the illuminance reading within that area. The process of determining this maximum center illuminance point is fully automated, eliminating subjective biases introduced by differences in experience and judgment among different operators, and establishing a unified, accurate, and repeatable spatial coordinate benchmark for all subsequent quantitative measurements.

[0058] Step 203: Using the maximum center illuminance point as a reference, control the illuminance meter to perform a preset scanning action, collect illuminance data, and calculate the optical performance parameters of the surgical shadowless lamp based on the collected illuminance data.

[0059] After successfully establishing the baseline, the data acquisition phase begins. Using the maximum center illuminance point as the reference, the illuminance meter is controlled to perform preset scanning actions to acquire illuminance data. These preset scanning actions are a series of precise mechanical motion trajectories pre-programmed to achieve the measurement of specific optical parameters. These trajectories are designed based on optical measurement principles and the characteristics of the parameter being measured. For example, to evaluate the size characteristics of the light spot, the scanning action might involve controlling the illuminance meter to move along multiple radial paths in a plane perpendicular to the optical axis, starting from the center point; while to evaluate the depth characteristics of the light field, the scanning action might involve controlling the illuminance meter to reciprocate along the optical axis. Throughout the scanning process, the control unit synchronously records the spatial coordinates of the illuminance meter and its output illuminance values, thus obtaining a series of coordinate-illuminance data pairs. This data serves as the basis for subsequent calculations.

[0060] Ultimately, the method completes by automatically calculating and outputting one or more optical performance parameters based on the collected illuminance data. In this step, the data processing algorithm built into the control unit processes and analyzes all the raw illuminance data collected in the preceding steps. The algorithm extracts key information from the data according to the definitions of different optical parameters. For example, by analyzing the coordinates of the boundary points corresponding to the illuminance value decreasing to a specific percentage (e.g., 50%) in the radial scan data, the spot diameter can be calculated; by analyzing the locations where the illuminance value decays to a specific level in the axial scan data, the beam depth can be determined. All calculations are completed automatically by the program, and the results are finally summarized and formatted for output, such as displaying on a screen, storing in a database, or directly printing into a standardized test report.

[0061] In summary, this embodiment systematically constructs a novel testing method by deeply integrating the horizontal installation physical setup with a complete programmed scanning and automated calculation process. It fundamentally solves the inefficiency problems of traditional methods caused by inconvenient installation and demanding site requirements. Furthermore, it completely replaces manual operation and subjective judgment through algorithms and automated control, thereby eliminating the efficiency bottlenecks and human errors introduced by these methods. This method ensures efficient, highly repeatable, and high-precision evaluation of multiple optical performance characteristics of surgical shadowless lamps, providing a reliable and powerful technical means for rapid quality inspection on production lines, product acceptance before shipment, and precise verification during the R&D process.

[0062] In one embodiment, such as Figure 3 As shown, controlling the three-dimensional linear module to drive the illuminance meter to find and locate the maximum center illuminance point of the surgical shadowless lamp irradiation field includes: Step 301: Control the illuminance meter to scan along the X-axis at the preset Z-axis position to find the first maximum illuminance point and its corresponding X coordinate; keep the X coordinate unchanged, scan along the Y-axis to find the second maximum illuminance point and its corresponding Y coordinate, and obtain the coarse positioning point.

[0063] The first step is coarse positioning. The control unit first moves the lux meter to a preset Z-axis position. This Z-axis position is usually set according to the nominal working distance of the surgical light being tested; for example, the lux meter is initially positioned on a plane 1000 mm away from the light-emitting surface of the light source, and this plane is perpendicular to the optical axis. After positioning, the control unit drives the lux meter to perform a one-dimensional linear scan along the X-axis. During this scan, the control unit moves the lux meter at a constant speed and continuously reads and records the lux meter readings and their corresponding X-coordinates at a specific sampling frequency (e.g., 100 points per second). After the scan, the system compares all the collected data points to find the maximum illuminance value on this X-axis path, i.e., the first maximum illuminance point, and accurately records the corresponding X-coordinate, denoted as X1. Subsequently, the control unit performs the following operation: keeping the X-coordinate X1 unchanged, it drives the lux meter to perform a second one-dimensional linear scan along the Y-axis. Similarly, the system records all illuminance values ​​on the scan path and finds the second maximum illuminance point on this path and its corresponding Y-coordinate, denoted as Y1. At this point, the system obtains a preliminary coordinate point (X1, Y1), which is defined as the coarse positioning point. The technical advantage of this coarse positioning process is that it quickly narrows down the possible location of the maximum illumination point from the entire two-dimensional reference plane to a very small area with minimal mechanical movement cost through only two orthogonal one-dimensional straight line scans. Compared to performing a complete two-dimensional grid scan, this method can significantly shorten the search time and improve testing efficiency.

[0064] Step 302: Using the coarse positioning point as the center, control the illuminance meter to perform a circular scan in the XY plane to find the global maximum illuminance point and the corresponding central illuminance value.

[0065] However, since the energy distribution of the actual light spot of the shadowless lamp may not be perfectly symmetrical, and the maximum illuminance point may not be precisely located at the intersection of two orthogonal scanning paths, the aforementioned coarse positioning point may not be the true global optimum. To solve this problem, a precise positioning step is then performed. In this step, the control unit uses the obtained coarse positioning point (X1, Y1) as the center and controls the illuminance meter to perform a circular scan in the XY plane (i.e., the aforementioned plane perpendicular to the optical axis). The path of this circular scan is at least one circle with the coarse positioning point as the center and a preset value as the radius. The control unit drives the illuminance meter to move at a constant speed along this circular path, continuously and densely collecting illuminance data during this process. By comparing the illuminance values ​​of all sampling points on this circular path, the system can accurately find the maximum value, which is the global maximum illuminance point, and record its precise two-dimensional coordinates (Xc, Yc) and the corresponding center illuminance value Ec.

[0066] This composite search strategy, which first achieves rapid convergence through orthogonal scanning and then refines locally through a circular path, achieves an optimal balance between computational resources and mechanical motion time. This strategy leverages the efficiency of linear scanning while overcoming the limitation of linear scanning potentially missing the true optimal point through the final circular scan. Thus, while ensuring final positioning accuracy, it significantly reduces the total scan path length and positioning time compared to performing a fine two-dimensional mesh scan, thereby improving the overall efficiency and response speed of automated testing.

[0067] In one embodiment, using the maximum center illuminance point as a reference, the illuminance meter is controlled to perform a preset scanning action to collect illuminance data, and based on the collected illuminance data, the optical performance parameters of the surgical shadowless lamp are calculated, including: automatically performing at least one of spot diameter measurement and beam depth measurement using the maximum center illuminance point as a reference. Wherein: Spot diameter measurement: Using the global maximum illuminance point as the base point, control the illuminance meter to perform radial scanning in at least four different directions in the XY plane, and record the position coordinates of the position where the illuminance value drops to 50% and / or 10% of the central illuminance value in each direction to calculate the spot diameter.

[0068] During spot diameter measurement, the control unit uses the global maximum illuminance point (Xc, Yc, Zc) as a spatial reference point and controls the illuminance meter to perform radial scanning in at least four different directions within the XY plane (i.e., the plane perpendicular to the optical axis). These directions are preferably uniformly distributed on the circumference; for example, four basic directions—0°, 90°, 180°, and 270°—can be selected, or further increased to eight directions forming a star shape—45°, 135°, 225°, and 315°—to obtain more comprehensive spot contour information. In each selected direction, the control unit drives the illuminance meter to move outward along that radial path from the central reference point. During this process, the system monitors changes in illuminance values ​​in real time and accurately records the position coordinates corresponding to the point in each direction where the illuminance value drops to a specific percentage of the central illuminance value. Typically, two key threshold boundaries are recorded: one is the point where the illuminance value drops to 50% of the center illuminance value, which is often defined by industry standards as the boundary of the effective light spot; the other is the point where the illuminance value drops to 10% of the center illuminance value, which defines the boundary of the floodlight area. For each measurement direction, the system records the coordinates at which these two thresholds are reached. The light spot diameter is calculated based on these boundary coordinates. For example, for the light spot diameter at the 50% threshold, the diameter in each symmetrical direction (such as 0° and 180°) can be calculated by determining the distance between two boundary points, and then the arithmetic mean of the diameters in all directions can be taken to obtain the average light spot diameter at that threshold. The same method can be used to calculate the light spot diameter at the 10% threshold. This objective determination method based on a fixed percentage illuminance threshold completely replaces the traditional method of manually estimating the light spot edge, ensuring the consistency and repeatability of the measurement results.

[0069] Light column depth measurement: Using the global maximum illuminance point as the base point, control the illuminance meter to move along the positive and negative directions of the Z-axis, and record the coordinates of the two positions where the illuminance value in the Z-axis direction drops to 20% of the center illuminance value to calculate the light column depth.

[0070] When measuring the depth of the light column, the control unit also uses the global maximum illuminance point as the base point, but controls the illuminance meter's movement direction to be along the Z-axis, parallel to the optical axis. The control unit drives the illuminance meter to move towards the shadowless lamp (negative Z-axis direction) and away from the shadowless lamp (positive Z-axis direction). In each direction, the system continuously collects illuminance data and accurately records the position coordinates corresponding to when the illuminance value drops to 20% of the center illuminance value. Typically, the industry standard uses this 20% threshold to define the effective depth of the light column. The system records the coordinates Z_low when this threshold is reached in the negative Z-axis direction and Z_high when this threshold is reached in the positive Z-axis direction. The light column depth is then calculated by the absolute distance between these two coordinates, i.e., |Z_high - Z_low|. This measurement process is entirely controlled by the program, eliminating random errors caused by human judgment of the operation endpoint and achieving precise quantification of the depth characteristics of the light field.

[0071] Shadowless lamp measurement: Control the light-blocking plate to move into the light path of the surgical shadowless lamp; under the obstruction of the light-blocking plate, control the illuminance meter to collect the illuminance value after obstruction at a specific position; based on the illuminance value after obstruction and the center illuminance value when there is no obstruction, calculate the shadowless lamp of the surgical shadowless lamp.

[0072] When measuring the shadowless rate, the first step is to control the movement of the light-blocking plate into the optical path of the surgical shadowless lamp. Specifically, the control unit drives a mechanical mechanism mounted on the shadowless lamp's mounting frame to precisely move a light-blocking plate with a specified size and shape (e.g., a circle with a diameter of not less than 50 mm or a square with an equivalent area) into the center region of the main optical path of the shadowless lamp. This light-blocking plate simulates the blocking of direct light by the surgeon's head or key surgical instruments during surgery. Its material is typically a low-reflectivity material to maximize light absorption and avoid diffuse reflection interfering with the measurement. After the light-blocking plate is stably in the blocking position, the data acquisition phase begins: with the light-blocking plate in place, the illuminance meter is controlled to collect the illuminance value at a specific location. This specific location is a critical operating parameter that needs to be clearly defined to ensure the consistency and comparability of the measurements. In a standardized implementation, this specific location is defined as the coordinates of the global maximum illuminance point determined in the completed maximum center illuminance point positioning step. In other words, the lux meter is precisely moved by the control unit to the same spatial coordinates as the brightest point in the unobstructed state, as previously identified. At this point, due to the intervention of the light-blocking plate, the light directly illuminating this point is partially or completely blocked, and the value measured by the lux meter is the illuminance value after obstruction (E_shadow). Measuring illuminance values ​​at the exact same location under both unobstructed and obstructed conditions most directly reflects the shadow elimination effect at that point. Finally, the shadowless efficiency (SE) of the surgical shadowless lamp is calculated based on the illuminance value after obstruction and the center illuminance value under unobstructed conditions. The formula for calculating the shadowless efficiency (SE) is usually expressed as a percentage: SE = (E_shadow / E_center) × 100%, where E_center is the center illuminance value measured at the same point under unobstructed conditions. The calculation process is automatically completed by the control unit. For example, if the center illuminance (E_center) of a shadowless lamp at a test point is 100,000 Lux, and the shadow (E_shadow) measured at the same point after inserting a light shield is 85,000 Lux, then its shadowlessness rate (SE) = (85,000 / 100,000) × 100% = 85%. This percentage directly reflects the ability of the shadowless lamp system (possibly through multi-lamp compensation or special optical design) to maintain 85% of the original illuminance even with obstructions. A higher value indicates a better shadowlessness effect.

[0073] In summary, the measurement method of this embodiment decomposes the complex two-dimensional light spot contour measurement into the superposition of multiple one-dimensional radial scans and transforms the three-dimensional light column characteristic measurement into two one-dimensional axial scans. Utilizing the execution capabilities of automated devices, it transforms abstract optical performance parameters into a series of precisely measurable and calculable mechanical coordinates and physical quantities. This method not only defines clear and repeatable measurement paths (radial and axial scans) and objective judgment criteria (fixed illuminance percentage thresholds), but also completely avoids human intervention through automatic algorithm calculation, thus ensuring extremely high repeatability and accuracy of test results at the operational level. It transforms the previously subjective perception of the shadowless effect into an objective quantitative indicator based on the ratio of the illuminance value after occlusion to the center illuminance value, which can be accurately measured and repeatedly verified. The method steps automatically control the light-blocking plate and illuminance meter to perform two standardized measurements at a fixed spatial reference point and automatically complete the calculations, completely eliminating the differences in human judgment. This not only enables standardized testing of a key but previously difficult-to-measure performance parameter of surgical shadowless lamps, but also seamlessly integrates this testing into the overall automated testing process, further enriching the functionality and authority of the testing method and providing crucial data support for the quality control and performance comparison of shadowless lamps.

[0074] This embodiment also provides a control system as a processing unit for implementing the aforementioned automated testing method. The hardware foundation of this system includes at least one processor (such as the CPU of an industrial computer or a dedicated microprocessor) and a memory (such as a hard disk or flash memory) connected to it. The memory stores a computer program, which essentially compiles all the method steps defined in the above embodiments into a series of executable machine instructions.

[0075] When the program is run by the processor, the system is configured to automatically execute the complete test process. This includes: generating control signals to drive the 3D linear module, enabling the illuminance meter to accurately execute the complex motion trajectory required to find the maximum center illuminance point, perform spot diameter scanning, and beam depth scanning; acquiring illuminance data collected by the illuminance meter during its movement in real time through the data acquisition interface; running the embedded algorithm module to automatically calculate optical performance parameters such as center illuminance, spot diameter, beam depth, and shadowlessness rate based on this illuminance data; and finally, integrating the calculation results with equipment information, test conditions, etc., to automatically generate and output a standardized test report.

[0076] This control system solidifies specific measurement methods through software programs, allowing operators to obtain the final report simply by initiating test commands. It achieves full automation from physical operation to data analysis, ensuring high efficiency, high repeatability, and high accuracy of test results.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0078] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An automated testing device for the optical performance of surgical shadowless lamps, characterized in that, include: A shadowless lamp fixing stand is used to detachably fix the surgical shadowless lamp to be tested in a horizontal installation manner, so that the optical axis of the surgical shadowless lamp is set horizontally; The motion table is separately configured from the surgical shadowless lamp fixing table; A three-dimensional linear module is mounted on the motion platform; An illuminance meter is mounted on the moving end of the three-dimensional linear module via a fixing device; The control unit is communicatively connected to the drive motor of the three-dimensional linear module and the illuminance meter. The control unit is configured to perform automated testing steps, which include: setting the optical parameters of the surgical shadowless lamp, controlling the illuminance meter to move according to a preset scanning trajectory to collect illuminance data, and calculating the optical performance parameters of the surgical shadowless lamp based on the data.

2. The automated testing device for the optical performance of surgical shadowless lamps according to claim 1, characterized in that, The three-dimensional linear module includes a Z-axis module that is parallel to the optical axis and horizontally mounted on the motion platform, an X-axis module that is horizontally orthogonal to the Z-axis and mounted on the moving end of the Z-axis module, and a Y-axis module that is vertically orthogonal to the X-axis and mounted on the moving end of the X-axis module. The illuminance meter is mounted on the moving end of the Y-axis module.

3. The automated testing device for the optical performance of surgical shadowless lamps according to claim 1 or 2, characterized in that, The fixed frame of the shadowless lamp and the moving frame are detachably connected by a snap-fit ​​or plug-in structure; and / or, the fixed frame of the shadowless lamp is provided with at least one light-blocking plate, and / or an adjustable adapter to adapt to different models of surgical shadowless lamps.

4. The automated testing device for the optical performance of surgical shadowless lamps according to claim 2, characterized in that, When executing the automated testing steps, the control unit is configured to: Control the movement of the illuminance meter to find and locate the maximum center illuminance point of the surgical shadowless lamp in a plane perpendicular to the optical axis; Using the maximum center illuminance point as a reference, perform at least one of the following: spot diameter measurement, beam depth measurement, and shadowlessness rate measurement.

5. The automated testing device for the optical performance of surgical shadowless lamps according to claim 4, characterized in that, When searching for the maximum center illuminance point, the control unit is configured to: The illuminance meter is controlled to scan along the X-axis at a preset Z-axis position to find the first maximum illuminance point and its corresponding X coordinate; while keeping the X coordinate unchanged, it is scanned along the Y-axis to find the second maximum illuminance point and its corresponding Y coordinate, thus obtaining a coarse positioning point. Using the coarse positioning point as the center, the illuminance meter is controlled to perform a circular scan in the XY plane to find the global maximum illuminance point and the corresponding central illuminance value.

6. The automated testing device for the optical performance of surgical shadowless lamps according to claim 4, characterized in that, When performing spot diameter measurement, the control unit is configured to: use the global maximum illuminance point as a base point, control the illuminance meter to perform radial scanning in multiple directions in the XY plane, and calculate the spot diameter based on the position coordinates where the illuminance value drops to a specific percentage; and / or, When performing beam depth measurement, the control unit is configured to: use the global maximum illuminance point as a base point, control the illuminance meter to move along the positive and negative Z-axis, and calculate the beam depth based on the position coordinates where the illuminance value drops to a specific percentage; and / or, When performing shadowless rate measurement, the control unit is configured to: control the light-blocking plate to move into the light path of the surgical shadowless lamp; and control the illuminance meter to collect the illuminance value after blocking by the light-blocking plate at a specific position. The shadowlessness rate of the surgical shadowless lamp is calculated based on the illuminance value after occlusion and the center illuminance value when there is no occlusion.

7. An automated testing method for the optical performance of surgical shadowless lamps, employing the apparatus as described in any one of claims 1-6, characterized in that, The method includes: The surgical shadowless lamp to be tested is fixed on the shadowless lamp fixing frame in a horizontal installation manner, so that the optical axis of the surgical shadowless lamp is horizontal; The three-dimensional linear module is controlled to drive the illuminance meter to find and locate the maximum center illuminance point of the irradiation field of the surgical shadowless lamp; Using the maximum center illuminance point as a reference, the illuminance meter is controlled to perform a preset scanning action to collect illuminance data, and the optical performance parameters of the surgical shadowless lamp are calculated based on the collected illuminance data.

8. The automated testing method for the optical performance of surgical shadowless lamps according to claim 7, characterized in that, Controlling the three-dimensional linear module to drive the illuminance meter to find and locate the maximum center illuminance point of the surgical shadowless lamp irradiation field includes: The illuminance meter is controlled to scan along the X-axis at a preset Z-axis position to find the first maximum illuminance point and its corresponding X coordinate; while keeping the X coordinate unchanged, it is scanned along the Y-axis to find the second maximum illuminance point and its corresponding Y coordinate, thus obtaining a coarse positioning point. Using the coarse positioning point as the center, the illuminance meter is controlled to perform a circular scan in the XY plane to find the global maximum illuminance point and the corresponding central illuminance value.

9. The automated testing method for the optical performance of surgical shadowless lamps according to claim 8, characterized in that, Using the maximum center illuminance point as a reference, the illuminance meter is controlled to perform a preset scanning action to collect illuminance data. Based on the collected illuminance data, the optical performance parameters of the surgical shadowless lamp are calculated, including: Using the maximum center illuminance point as a reference, at least one of the following is performed: spot diameter measurement, beam depth measurement, and shadowlessness rate measurement; wherein, The spot diameter measurement step includes: using the global maximum illuminance point as the base point, controlling the illuminance meter to perform radial scanning in at least four different directions in the XY plane, and recording the position coordinates of the illuminance value in each direction dropping to 50% and / or 10% of the center illuminance value to calculate the spot diameter; The light column depth measurement step includes: using the global maximum illuminance point as the base point, controlling the illuminance meter to move along the positive and negative directions of the Z-axis, and recording the coordinates of two positions where the illuminance value in the Z-axis direction drops to 20% of the center illuminance value to calculate the light column depth; The shadowlessness rate measurement steps include: controlling the light-blocking plate to move into the optical path of the surgical shadowless lamp; controlling the illuminance meter to collect the illuminance value after blocking under the light-blocking plate; and calculating the shadowlessness rate of the surgical shadowless lamp based on the illuminance value after blocking and the center illuminance value when there is no blocking.

10. A control system, characterized in that, It includes at least one processor and a memory, wherein the memory stores a computer program that, when executed by the processor, implements the steps as described in any one of claims 7-9.

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