Medical device optical element waterproof film performance detection method and system

Abstract

The application relates to the technical field of medical equipment detection, and discloses a medical equipment optical element waterproof film performance detection method and system. Local transient thermal disturbance is applied to a target micro area of a waterproof film of a medical equipment optical element; a transient optical response signal of the target micro area is acquired; the transient optical response signal is analyzed to extract a thermal optical response feature of an interface state of the waterproof film and the substrate, and interface adhesion force reduction information or a micro gap is identified and quantified according to the thermal optical response feature. Through local transient thermal disturbance and analysis of the transient optical response signal, the micro state of the interface between the waterproof film and the substrate is directly detected, so that the interface adhesion force reduction or the micro gap is identified and quantified in an early stage, the problem that existing macro detection methods cannot find early interface degradation is effectively solved, and an accurate, efficient and non-destructive detection method is provided for performance evaluation of the waterproof film of the medical equipment optical element.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment detection, in particular to a medical equipment optical element waterproof film performance detection method and system. BACKGROUND

[0002] In the field of medical equipment manufacturing, especially for precision optical elements that need to be used repeatedly for a long time, the waterproof film coated on the surface is the key to ensure the functionality of the equipment and the safety of the patient. Traditionally, the performance evaluation of these films mainly relies on methods such as macroscopic contact angle measurement and water immersion pressure test. Although these methods can effectively evaluate the surface hydrophobicity or detect penetrating leakage, they are mainly sensitive to the outermost layer or the overall sealing of the film, and cannot directly detect the integrity of the film-substrate interface buried below.

[0003] With the progress of medical technology, the new generation of medical devices is designed to withstand hundreds or even thousands of high-pressure steam sterilization cycles. This harsh reprocessing process can introduce cumulative thermal and mechanical stresses at the interface between the waterproof film and the underlying optical element substrate. For example, during the heating phase of high-pressure sterilization, the optical element substrate and the waterproof film have different thermal expansion coefficients due to different material compositions, which can generate internal shear stress at the interface. Repeated temperature cycles and high-pressure steam penetration can cause the interface adhesion to decrease or form small, discontinuous gaps or microcracks. These initial defects are usually in the nanometer to micrometer scale and cannot be detected by the naked eye, and the size is too small to form a continuous leakage path.

[0004] Existing macroscopic detection methods such as contact angle measurement and water immersion pressure test are not effective in identifying these early, local interface degradation. Contact angle measurement cannot directly detect the integrity of the film-substrate interface, and water immersion pressure test can only detect leakage when the interface damage has expanded and merged to form a continuous fluid channel. This means that the current quality control process has a significant time lag and cannot provide early warning or predictive ability about the impending failure of the waterproof barrier. Many devices fail prematurely due to the degradation of the waterproof film performance before reaching their expected service life, resulting in high costs of early retirement, high maintenance costs, and damage to brand reputation, so there is an urgent need for a detection method that can accurately, efficiently and non-destructively identify these early interface degradation.

[0005] The prior art needs to be improved in view of the above problems. SUMMARY

[0006] In order to solve the problems of the prior art, the present application provides a medical equipment optical element waterproof film performance detection method and system.

[0007] In a first aspect, the application provides a method for detecting the performance of a waterproof film of a medical device optical element, comprising:

[0008] applying a local transient thermal disturbance to a target micro region of the waterproof film of the medical device optical element;

[0009] acquiring a transient optical response signal of the target micro region;

[0010] analyzing the transient optical response signal to extract a thermal-optical response feature of the interface state between the waterproof film and the substrate, and identifying and quantifying the interface adhesion force reduction information or micro gap according to the thermal-optical response feature.

[0011] By analyzing the local transient thermal disturbance and the transient optical response signal, the micro state of the interface between the waterproof film and the substrate is directly detected, the interface adhesion force reduction or micro gap is identified and quantified in the early stage, the problem that the existing macro detection method cannot find the early interface degradation is effectively solved, and a precise, efficient and non-destructive detection means for performance evaluation of the waterproof film of the medical device optical element is provided.

[0012] Further, the application also provides that the method further comprises:

[0013] The transient optical response signal is the reflected or transmitted light signal of the target micro region during the process of applying the local transient thermal disturbance, the film response process and the subsequent cooling relaxation process.

[0014] Further, the application also provides that the step of applying a local transient thermal disturbance to a target micro region of the waterproof film of the medical device optical element comprises:

[0015] applying a probing thermal stimulus to the target micro region to capture an initial optical response caused by the probing thermal stimulus;

[0016] determining the intensity, duration or waveform parameters of the local transient thermal disturbance according to the initial optical response;

[0017] applying a local transient thermal disturbance to a target micro region of the waterproof film of the medical device optical element according to the determined intensity, duration or waveform parameters.

[0018] By introducing the mechanism of pre-probing and parameter optimization, the application of the local transient thermal disturbance is more accurate and effective, and the thermal disturbance parameters can be adjusted according to the actual situation of the target region, thereby improving the sensitivity and accuracy of the detection.

[0019] Further, the application also provides that the step of applying a probing thermal stimulus to the target micro region to capture an initial optical response caused by the probing thermal stimulus comprises:

[0020] The target micro area is scanned and detected by a scanning detection heat stimulus, which uses a focused energy beam to sequentially and briefly irradiate a plurality of sub-regions in the target micro area in the form of a preset low-energy pulse;

[0021] The transient optical response signals of the plurality of sub-regions are captured;

[0022] The transient optical response signals of the plurality of sub-regions are analyzed to obtain the initial optical response of the target micro area.

[0023] By using the scanning detection heat stimulus and the sub-region deviation analysis, the initial state of the target micro area is more accurately evaluated, the possible errors of a single detection point are avoided, and the representativeness and accuracy of the initial optical response are improved.

[0024] Further, the step of analyzing the transient optical response signals of the plurality of sub-regions to obtain the initial optical response of the target micro area includes:

[0025] The transient optical response signals of the plurality of sub-regions are analyzed to identify the sub-region with the largest response deviation among the plurality of sub-regions;

[0026] The transient optical response signal of the sub-region with the largest response deviation is taken as the initial optical response of the target micro area.

[0027] By identifying the sub-region with the largest response deviation, the potential defect or abnormal region can be more effectively located, so that the initial optical response can more accurately reflect the true state of the target micro area, and a more reliable basis is provided for subsequent parameter determination of the local transient thermal disturbance.

[0028] Further, the step of identifying the sub-region with the largest response deviation among the plurality of sub-regions includes:

[0029] For the transient optical response signals of the plurality of sub-regions, a difference measure of the transient optical response signals and a reference response signal of a healthy film is calculated;

[0030] According to the difference measure, the sub-region with the largest difference measure is identified as the sub-region with the largest response deviation.

[0031] By introducing the difference measure with the reference response signal of the healthy film, the deviation analysis has an objective quantitative standard, the sub-region most likely to have a defect is more accurately identified, and the reliability and precision of the detection are improved.

[0032] Further, the step of analyzing the transient optical response signals to extract the thermal-optical response characteristics of the interface state of the waterproof film and the substrate, and identifying and quantifying the interface adhesion force reduction information or the micro gap according to the thermal-optical response characteristics includes:

[0033] selecting a reference region on the waterproof film adjacent to the target micro region;

[0034] applying the same local transient thermal disturbance to the reference region as to the target micro region, and obtaining a transient optical response signal of the reference region;

[0035] extracting a relaxation time of the target micro region from the transient optical response signal of the target micro region;

[0036] extracting a relaxation time of the reference region from the transient optical response signal of the reference region;

[0037] calculating a difference relaxation time between the relaxation time of the target micro region and the relaxation time of the reference region;

[0038] according to the difference relaxation time as a thermal-optical response feature, identifying and quantifying the interface adhesion force reduction information or micro gap according to the thermal-optical response feature.

[0039] By introducing the reference region for comparative analysis, calculating the difference relaxation time as a thermal-optical response feature, the interference of environmental factors and material inherent properties is effectively excluded, so that the identification and quantification of the interface adhesion force reduction or micro gap are more accurate and reliable.

[0040] Further, the present application also proposes that the step of extracting the relaxation time of the target micro region from the transient optical response signal of the target micro region comprises:

[0041] performing multi-time scale dynamic analysis on the transient optical response signal of the target micro region;

[0042] According to the multi-time scale dynamic analysis result, a plurality of relaxation components with different time constants are identified and separated;

[0043] According to the component with longer relaxation time and corresponding larger optical response amplitude in the plurality of relaxation components, a characteristic relaxation component of the film and substrate interface adhesion force reduction or micro gap is determined;

[0044] The time constant of the characteristic relaxation component is taken as the relaxation time of the target micro region.

[0045] By adopting multi-time scale dynamic analysis, the transient optical response signal can be analyzed more deeply, the characteristic relaxation component related to the interface defect is identified, and the relaxation time reflecting the interface state is extracted more accurately, thereby improving the sensitivity and specificity of detection.

[0046] Further, the present application also proposes that the step of identifying and quantifying the interface adhesion force reduction information or micro gap according to the thermal-optical response feature comprises:

[0047] According to the thermal-optical response characteristics, the difference relaxation time is mapped to a quantitative value of the interfacial adhesion force or a size parameter of the micro-gap by referring to a pre-established calibration curve or mapping table;

[0048] According to the quantitative value or the size parameter, the interfacial adhesion force degradation information or the micro-gap is identified and quantified.

[0049] By introducing the calibration curve or the mapping table, a direct correlation between the thermal-optical response characteristics and the quantitative value of the interfacial adhesion force or the micro-gap is realized, so that the detection result has a clear physical meaning and operability, and provides a quantitative basis for practical application.

[0050] In a second aspect, the present application also provides a medical device optical element waterproof film performance detection system, which comprises:

[0051] A thermal disturbance application module is configured to apply a local transient thermal disturbance to a target micro area of the waterproof film of the medical device optical element;

[0052] An optical signal capture module is configured to acquire a transient optical response signal of the target micro area;

[0053] A signal analysis module is configured to analyze the transient optical response signal to extract thermal-optical response characteristics of the interface state between the waterproof film and the substrate, and identify and quantify the interfacial adhesion force degradation information or the micro-gap according to the thermal-optical response characteristics.

[0054] In summary, the medical device optical element waterproof film performance detection method and system provided by the present application can effectively solve the problems that the macroscopic detection method in the prior art cannot directly detect the integrity of the buried film-substrate interface and cannot identify early and local interface degradation, by applying a local transient thermal disturbance to a target micro area of the waterproof film of the medical device optical element, acquiring a transient optical response signal thereof, and then analyzing the signal to extract thermal-optical response characteristics of the interface state between the waterproof film and the substrate, and identifying and quantifying the interfacial adhesion force degradation information or the micro-gap. By local transient thermal disturbance, the present application can accurately stimulate the thermal response of the film-substrate interface at a microscopic scale, and the transient optical response signal can sensitively capture the changes in thermal conduction characteristics caused by the interfacial adhesion force degradation or the micro-gap. This direct and microscopic detection method overcomes the limitations of traditional contact angle measurement and water immersion pressure testing, realizes non-destructive identification and quantification of early defects at the nanometer to micrometer scale, provides early warning capability for quality control of medical device optical elements, effectively avoids premature failure of the device due to degradation of the waterproof film performance, reduces maintenance costs, and improves product reliability and brand reputation. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1A flowchart of a medical device optical element waterproof film performance detection method provided by an embodiment of the present application.

[0056] Figure 2 A structural diagram of a medical device optical element waterproof film performance detection system provided by an embodiment of the present application.

[0057] Label explanation: 210, thermal disturbance application module; 220, optical signal capture module; 230, signal analysis module. DETAILED DESCRIPTION

[0058] The technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the present application described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0059] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0060] The conventional existing medical device optical element waterproof film performance evaluation method mainly relies on macroscopic contact angle measurement and water immersion pressure test, etc. Although these methods can evaluate the surface hydrophobicity or detect the penetrating leakage, they are mainly sensitive to the outermost layer or the overall sealing of the film, and cannot directly detect the integrity of the interface between the film buried below and the substrate. Especially in the harsh reprocessing process in which medical devices need to withstand hundreds or even thousands of high-pressure steam sterilization cycles, the interface between the waterproof film and the underlying optical element substrate will introduce cumulative thermal stress and mechanical stress, resulting in a decrease in interfacial adhesion or the formation of small, discontinuous gaps or microcracks. These early, local interface degradation is difficult to identify by existing macroscopic detection methods.

[0061] To this end, in a first aspect, referring to Figure 1 , the present application provides a medical device optical element waterproof film performance detection method, comprising the following steps:

[0062] applying a local transient thermal disturbance to a target micro area of the waterproof film of the medical device optical element;

[0063] acquiring a transient optical response signal of the target micro-region;

[0064] analyzing the transient optical response signal to extract a thermal-optical response feature of the interface state between the waterproof film and the substrate, and identifying and quantifying the interface adhesion force reduction information or the micro-gap according to the thermal-optical response feature.

[0065] The present application aims to accurately identify the early degradation of the interface between the waterproof film and the substrate of the optical element of the medical device, such as the reduction of the interface adhesion force or the formation of the micro-gap, in a non-contact and non-destructive manner. The target micro-region refers to a local microscopic region on the waterproof film that needs to be detected, usually with a size of microns to sub-millimeters, which is sufficient to reflect the subtle changes of the local interface state. The local transient thermal disturbance refers to an energy pulse applied to the target micro-region in a very short time (e.g. nanoseconds to microseconds), which can be a laser pulse, a focused acoustic wave pulse or a thermal pulse generated by a micro-heating element, and its purpose is to generate a transient temperature gradient and thermal stress at the interface between the film and the substrate, thereby exciting the thermal-optical response of the interface. The transient optical response signal refers to the changes in the light signal reflected or transmitted by the target micro-region during the application of the thermal disturbance and its subsequent relaxation process, which carries information about the internal structure of the film and the interface state. The thermal-optical response feature is a physical quantity obtained by analyzing the transient optical response signal, which can represent the interface state between the film and the substrate, such as thermal relaxation time, thermal diffusion coefficient, optical phase change, etc. By identifying and quantifying these features, the existence and degree of the interface adhesion force or the micro-gap can be indirectly evaluated.

[0066] In specific implementation, the local transient thermal disturbance applied to the target micro-region of the waterproof film of the optical element of the medical device can be realized in various ways. For example, a focused laser pulse can be used as the heat source, and the intensity and duration of the thermal disturbance can be controlled by adjusting the power, pulse width and repetition frequency of the laser. The laser beam can be precisely focused on the target micro-region to achieve local heating. Another way is to use a micro-resistance heater, which is in contact with or close to the target micro-region, and the transient thermal disturbance is applied by controlling the current and heating time. Focused ultrasonic pulses can also be used to generate local transient thermal effects in the target region by absorbing acoustic energy. A high-speed photodetector or CCD camera can be used to capture the changes in the reflected or transmitted light intensity of the target micro-region under the action of the thermal disturbance in real time, with appropriate optical paths (such as reflection or transmission). When the thermal disturbance is applied, the optical properties of the film material, such as refractive index and absorption coefficient, will change transiently with temperature, resulting in corresponding changes in the reflected or transmitted light signal. The time scale of these signal changes is closely related to the duration of the thermal disturbance and the thermal relaxation process of the film.

[0067] Analyzing the transient optical response signals to extract the thermal-optical response characteristics of the interface state between the waterproof film and the substrate, and identifying and quantifying the interface adhesion force reduction information or micro-gap according to the thermal-optical response characteristics, is the core step of the present application. For example, by performing time domain or frequency domain analysis on the captured transient optical response signals, the decay time constant, peak amplitude, phase delay and other parameters of the signals can be extracted. These parameters are directly related to the thermal diffusion characteristics of the film, the interface thermal resistance, and the thermal coupling efficiency between the film and the substrate. When the interface adhesion force decreases or there is a micro-gap, the heat conduction at the interface will be hindered, causing the heat retention time in the film to be prolonged, thereby affecting the relaxation time of the optical response signal. By establishing a quantitative relationship between these thermal-optical response characteristics and the interface adhesion force or micro-gap (such as through a pre-calibrated curve or model), the identification and quantification of the interface state can be achieved.

[0068] The present application applies local transient thermal disturbance to the target micro area of the waterproof film of the optical element of the medical device, and obtains its transient optical response signal, and then analyzes these signals to extract the thermal-optical response characteristics of the interface state between the waterproof film and the substrate. When there is a decrease in interface adhesion force or a micro-gap between the waterproof film and the substrate, the heat transfer generated by the local transient thermal disturbance at the interface will be affected, causing changes in the temperature field distribution and relaxation process in the film. These changes will be reflected in the captured transient optical response signals through the transient changes in the optical properties (such as refractive index, absorption coefficient) of the film. For example, interface defects will cause the heat retention time in the film to be prolonged, thereby increasing the decay time constant of the optical response signal. By accurately measuring and analyzing these thermal-optical response characteristics and comparing them with the pre-established healthy film reference data, the existence of interface adhesion force reduction or micro-gap can be identified. Further, by mapping these characteristic parameters to a calibration curve or model, the degree of reduction of the interface adhesion force or the size of the micro-gap can be quantified, thereby achieving early, local, non-destructive evaluation of the performance of the waterproof film.

[0069] Traditional methods such as contact angle measurement and water immersion pressure test mainly focus on the surface hydrophobicity or overall sealing of the film, and it is difficult to detect the early and local degradation of the film and substrate interface. For example, in the high-pressure steam sterilization cycle, the decline of interfacial adhesion or the formation of micro-gaps is an early sign of film failure, but these defects may not manifest as macroscopic leakage or changes in surface hydrophobicity. The present application can directly detect changes in the thermal conductivity of the film and substrate interface by applying a local transient thermal disturbance and analyzing the transient optical response signal generated thereby, thereby sensitively capturing the presence of interfacial adhesion decline or micro-gaps. The present application can provide early warning of the impending failure of the waterproof barrier, allowing potential problems to be discovered and resolved in a timely manner before the device reaches the expected service life, avoiding premature failure of the device due to film performance degradation, high maintenance costs, and damage to brand reputation.

[0070] Further, the transient optical response signal is the light signal reflected or transmitted by the target micro region during the process of applying a local transient thermal disturbance, the film response process, and the subsequent cooling relaxation process.

[0071] Wherein, the process of applying a local transient thermal disturbance refers to the stage in which the energy beam acts on the target micro region, causing its temperature to rise rapidly; the film response process refers to the stage in which the film material responds physically or chemically to the thermal disturbance, such as thermal expansion, change in refractive index, etc., and lasts for a period of time; the subsequent cooling relaxation process refers to the stage in which the target micro region gradually dissipates heat after the thermal disturbance stops, the temperature returns to the initial state, and the optical properties of the film material recover accordingly. During these processes, by capturing the light signal reflected or transmitted by the target micro region, the dynamic optical behavior of the film under thermal action can be comprehensively recorded.

[0072] The present application ensures complete capture of the thermal-optical response of the film by defining the transient optical response signal as the light signal reflected or transmitted during the process of applying a local transient thermal disturbance, the film response process, and the subsequent cooling relaxation process. This comprehensive signal collection method can reflect the entire dynamic process of the film from heating, response to heat dissipation and relaxation, thereby providing a sufficient data basis for subsequent accurate analysis of the thermal-optical response characteristics of the film and substrate interface state. The transient optical response signal containing the entire dynamic thermal response process of the film enables the subsequent signal analysis to more accurately extract thermal-optical response characteristics related to interfacial adhesion decline information or micro-gaps, significantly improving the sensitivity and reliability of the detection. This comprehensive signal collection method avoids misjudgment or missed judgment due to information loss, improving the accuracy of performance detection of the waterproof film of the optical element of the medical device.

[0073] Further, the step of applying a local transient thermal disturbance to the target micro region of the waterproof film of the optical element of the medical device comprises:

[0074] applying a probing thermal stimulus to the target micro-region, capturing an initial optical response caused by the probing thermal stimulus; determining an intensity, a duration, or a waveform parameter of the local transient thermal perturbation according to the initial optical response; and applying the local transient thermal perturbation to the target micro-region of the waterproof film of the optical element of the medical device according to the determined intensity, duration, or waveform parameter.

[0075] Specifically, the application of the probing thermal stimulus aims to preliminarily and low-energy heat the target micro-region in a non-destructive manner to obtain the preliminary reaction of the region to the thermal stimulus. The probing thermal stimulus can be performed by, for example, a low-power laser pulse or a weak local heating source. The captured initial optical response can be the change in reflectivity, transmissivity, or fluorescence signal of the target micro-region under the probing thermal stimulus, which reflects the immediate response characteristics of the film material to heat. The determination of the intensity, duration, or waveform parameter of the local transient thermal perturbation according to the initial optical response can be understood as evaluating the current thermal and optical characteristics of the target micro-region, such as its thermal diffusion coefficient, heat capacity, or optical absorption rate, by analyzing the amplitude, decay rate, or spectral characteristics of the initial optical response. Based on these evaluation results, a preset algorithm or model can be used to dynamically adjust the parameters of the subsequent local transient thermal perturbation to ensure that it can effectively and accurately excite the thermo-optical response at the film-substrate interface while avoiding unnecessary damage to the film. For example, if the initial optical response shows that the region is highly sensitive to heat, the intensity of the subsequent local transient thermal perturbation can be appropriately reduced, and the duration can be shortened; conversely, it can be appropriately enhanced or prolonged. In actual applications, the application of the local transient thermal perturbation to the target micro-region of the waterproof film of the optical element of the medical device according to the determined intensity, duration, or waveform parameter refers to the use of the adjusted energy beam or heating source to accurately act on the target micro-region to induce thermal stress or thermal expansion at the film-substrate interface, thereby generating a transient optical response signal that can be captured and analyzed.

[0076] The present application introduces a probing thermal stimulus and captures the initial optical response before formally applying a local transient thermal disturbance, so that the subsequent local transient thermal disturbance parameters can be adaptively adjusted according to the actual thermal and optical characteristics of the target micro area. This pre-probing and parameter optimization mechanism ensures that the applied thermal disturbance can act on the film in the most suitable way, thereby more effectively exciting the thermal-optical response of the film and substrate interface state, avoiding inaccurate detection or potential damage to the film due to parameter mismatch. Through adaptive optimization of the local transient thermal disturbance parameters, the present application can ensure accurate control of the thermal disturbance energy, avoiding damage to the film due to excessive energy or insufficient response due to low energy. Thus, the accuracy of identifying and quantifying the interface adhesion force reduction information or micro gap is improved, and the adaptability of the detection method to different film materials and states is enhanced, thereby improving the practical value and efficiency of the overall detection method.

[0077] Further, the step of applying a probing thermal stimulus to the target micro area and capturing the initial optical response caused by the probing thermal stimulus comprises:

[0078] The scanning probing thermal stimulus uses a focused energy beam to sequentially and briefly irradiate multiple sub-regions in the target micro area in the form of a preset low-energy pulse.

[0079] Capture the transient optical response signals of the multiple sub-regions.

[0080] Perform deviation analysis on the transient optical response signals of the multiple sub-regions to obtain the initial optical response of the target micro area.

[0081] Specifically, the scanning probing thermal stimulus refers to moving or deflecting the energy beam to sequentially and briefly irradiate multiple sub-regions in the target micro area according to a predetermined path and order. The focused energy beam can be understood as concentrating the energy of a heat source (such as a laser beam) to a very small focal point to achieve precise heating of the micro area. The focused energy beam can be generated by a laser, microwave source or other controllable heat source, and focused and scanned by an optical system (such as a lens, scanning galvanometer, etc.). The preset low-energy pulse form means that the energy and duration of each irradiation are precisely controlled at a low level to avoid any form of damage to the waterproof film, while ensuring that a detectable transient optical response can be induced. For example, the pulse energy can be set at the level of millijoule or microjoule, and the pulse duration can be set at the level of nanosecond or microsecond. Sequentially and briefly irradiating multiple sub-regions obtains local thermal response information at different positions within the target micro area, thereby more comprehensively evaluating the overall state of the region.

[0082] Wherein, capturing the transient optical response signals of multiple sub-regions refers to immediately recording the light signals reflected or transmitted by the sub-regions during the heating and subsequent cooling relaxation process through optical sensors (such as photodetectors, high-speed cameras, etc.) after each sub-region is briefly irradiated. These signals reflect the transient thermal-optical characteristics of the thin film under local thermal disturbance. In practical applications, the initial optical response of the target micro-region is obtained by analyzing the deviation of the transient optical response signals of multiple sub-regions, which refers to identifying the representative response characteristics by comparing the transient optical response signals of different sub-regions. For example, the average value, standard deviation or difference with other sub-regions of each sub-region response signal can be calculated to determine the initial optical response that best reflects the overall or local abnormal state of the target micro-region. The overall thermal behavior of the target micro-region is comprehensively evaluated from multiple local responses to provide a basis for subsequent precise application of local transient thermal disturbance.

[0083] The present application effectively avoids the damage to the waterproof film caused by traditional single high-energy detection by using scanning detection thermal stimulus and sequentially and briefly irradiating multiple sub-regions within the target micro-region in the form of preset low-energy pulses. By capturing and analyzing the deviation of the transient optical response signals of multiple sub-regions, the thermal response information of different positions inside the target micro-region can be comprehensively and finely obtained. This multi-point, low-energy detection method enables even small structures or material inhomogeneity inside the target micro-region to be accurately identified and reflected in the initial optical response. Thus, the overall thermal characteristics of the target micro-region can be more accurately evaluated to provide a more reliable and fine data basis for subsequent determination of the intensity, duration or waveform parameters of local transient thermal disturbance, thereby ensuring the accuracy and safety of subsequent formal detection. Compared with the general method of only applying detection thermal stimulus, the scanning, low-energy pulse detection method of the present application significantly reduces the risk of damage to the film while improving the identification ability of internal heterogeneity of the target micro-region. By analyzing the deviation of the transient optical response signals of multiple sub-regions, the initial optical response reflecting the true state of the film can be more accurately obtained, thereby providing a solid foundation for subsequent precise application of local transient thermal disturbance and greatly improving the reliability and fineness of the detection method.

[0084] In some preferred embodiments, a circular target micro-region with a diameter of 1 mm is assumed to be detected. A laser scanning system equipped with a tunable femtosecond laser can be employed to focus the laser beam into a spot with a diameter of about 10 microns. The laser is scanned in a grid pattern over the target micro-region with an energy of 100 femtojoules, a pulse duration of 100 femtoseconds, and a step size of 20 microns, sequentially and briefly irradiating about 2500 sub-regions (e.g., a 50x50 grid). After each irradiation, the reflected light signal of each sub-region is captured by a high-speed photodetector, and its decay curve on the nanosecond time scale is recorded. Subsequently, the transient optical response signals of these sub-regions are input into a signal processing unit. The signal processing unit can calculate the peak decay time or initial slope of each sub-region response signal and compare it with a pre-set healthy thin film reference value. By deviation analysis, for example, identifying sub-regions whose decay time is significantly shorter or longer than the reference value, or sub-regions with abnormal response amplitude, the initial optical response of the target micro-region is comprehensively judged and obtained, for example, taking the average characteristic value of all sub-region responses, or taking the response of the sub-region with the largest deviation as representative, to guide the subsequent parameter setting of the main detection of thermal disturbance.

[0085] Further, the step of performing deviation analysis on the transient optical response signals of the plurality of sub-regions to obtain the initial optical response of the target micro-region includes:

[0086] analyzing the transient optical response signals of the plurality of sub-regions to identify a sub-region with the largest response deviation among the plurality of sub-regions;

[0087] taking the transient optical response signal of the sub-region with the largest response deviation as the initial optical response of the target micro-region.

[0088] Wherein, the analysis of the transient optical response signals of the plurality of sub-regions aims to evaluate the response characteristics of each sub-region to the probing thermal stimulus. The sub-region with the largest response deviation generally refers to the sub-region whose transient optical response signal significantly deviates from the expected or normal response pattern. This deviation can manifest as abnormality in signal amplitude, decay rate, peak time, etc. By identifying the sub-region with the largest response deviation, the most likely location of defects or abnormalities within the target micro-region can be effectively located. Further, taking the transient optical response signal of the sub-region with the largest response deviation as the initial optical response of the target micro-region, the most representative response data reflecting the potential defect or abnormal state is obtained. In subsequent determination of local transient thermal disturbance parameters, based on this most deviated initial optical response, the intensity, duration or waveform parameters of the thermal disturbance can be more accurately adjusted to ensure that the subsequent detection can more effectively excite and capture the thermal-optical response characteristics of the thin film and substrate interface state.

[0089] The present application can effectively extract the initial optical response most representing the potential defects or abnormal state of the thin film from the complex background signal by finely analyzing the transient optical response signals of multiple sub-regions and focusing on the sub-region with the largest response deviation, avoiding the problem that the defect signal may be diluted due to the averaging process of the entire target micro region, thereby improving the accuracy and representativeness of the initial optical response. By identifying the most sensitive or abnormal region, it can be ensured that the subsequent local transient thermal disturbance can be targeted to the part most in need of detection, laying a foundation for accurately extracting the thermal-optical response characteristics of the interface state. This method of focusing on the sub-region with the largest response deviation significantly improves the sensitivity and positioning accuracy of the micro defect in the detection thermal stimulation stage, and can more accurately obtain the initial optical response reflecting the potential defects or abnormal state of the waterproof thin film of the optical element of the medical device.

[0090] Further, the step of identifying the sub-region with the largest response deviation in the multiple sub-regions comprises:

[0091] For the transient optical response signals of the multiple sub-regions, a difference measure of the transient optical response signals and the baseline response signal of the healthy thin film is calculated.

[0092] According to the difference measure, the sub-region with the largest difference measure is identified as the sub-region with the largest response deviation.

[0093] Specifically, the difference measure refers to an index for quantifying the difference between the transient optical response signals of the multiple sub-regions and the baseline response signal of the healthy thin film obtained in advance. The baseline response signal is usually obtained by performing the same detection thermal stimulation experiment on the same type of waterproof thin film with good performance and no defects, as the response curve in the ideal state. The difference measure can be calculated by various mathematical or statistical methods, such as root mean square error (RMSE), absolute difference integral, inverse of correlation coefficient, or deviation of specific feature points (such as peak value, half-width, relaxation time), etc., providing an objective and quantifiable standard to evaluate the deviation of the transient optical response signal of each sub-region from the healthy state. Among them, identifying the sub-region with the largest difference measure means selecting the sub-region with the largest numerical value by comparing the difference measure values calculated for all sub-regions. The transient optical response signal of this sub-region is considered to deviate most from the baseline response signal of the healthy thin film, and thus it is most representative of the initial optical response of the target micro region, thereby providing a more accurate basis for determining the parameters of the subsequent local transient thermal disturbance.

[0094] The present application provides an objective and quantifiable evaluation criterion for the "response deviation" by introducing the reference response signal of the healthy thin film and calculating the difference measure between the transient optical response signal of each sub-region and the reference signal. It is this quantitative comparison that makes it more accurate and reliable to identify the sub-region with the largest response deviation among multiple sub-regions. By selecting the sub-region with the largest difference measure, it can be ensured that the selected initial optical response signal can most effectively reflect the potential defects or abnormalities that may exist in the target micro region, thereby laying the foundation for the accurate determination of subsequent local transient thermal disturbance parameters. By introducing the quantitative difference measure and taking the reference response signal of the healthy thin film as the reference, the evaluation of the response deviation of the sub-region is more objective, accurate and repeatable. This significantly improves the representativeness and reliability of the initial optical response signal, and further improves the accuracy of the determination of the local transient thermal disturbance parameters, which ultimately helps to more accurately identify and quantify the information of the decrease in the interfacial adhesion force or micro gap of the waterproof thin film of the optical element of the medical device.

[0095] In some preferred embodiments, the difference measure can be obtained by calculating the root mean square error (RMSE) between the transient optical response signal of each sub-region and the reference response signal of the healthy thin film. For example, assuming that the reference response signal of the healthy thin film is R_base(t) and the transient optical response signal of a certain sub-region is R_sub(t), the RMSE of the sub-region can be expressed as:

[0096] RMSE = sqrt((1 / N) * sum((R_sub(t_i) - R_base(t_i))^2))

[0097] where N is the number of sampling points and t_i is the time point. Specifically, after the target micro region is scanned and subjected to a probing thermal stimulus, the transient optical response signals of multiple sub-regions are captured. For each sub-region, its transient optical response signal R_sub(t) is input into the signal analysis module. The module has pre-stored the reference response signal R_base(t) of the healthy thin film. Subsequently, for each sub-region, the RMSE value between R_sub(t) and R_base(t) is calculated. For example, the RMSE of sub-region A is 0.05, the RMSE of sub-region B is 0.12, and the RMSE of sub-region C is 0.08. By comparing these RMSE values, it can be identified that sub-region B has the largest RMSE value (0.12). Thus, sub-region B is determined as the sub-region with the largest response deviation, and its transient optical response signal will be used as the initial optical response of the target micro region. This quantitative method ensures the objectivity and accuracy of the identification process, avoiding errors caused by subjective judgment.

[0098] Further, the step of analyzing the transient optical response signal to extract the thermal-optical response feature of the interface state between the waterproof film and the substrate, and identifying and quantifying the interface adhesion force reduction information or the micro-gap according to the thermal-optical response feature comprises:

[0099] selecting a reference region adjacent to the target micro region on the waterproof film;

[0100] applying the same local transient thermal disturbance to the reference region as the target micro region, and obtaining the transient optical response signal of the reference region;

[0101] extracting the relaxation time of the target micro region from the transient optical response signal of the target micro region;

[0102] extracting the relaxation time of the reference region from the transient optical response signal of the reference region;

[0103] calculating the difference value relaxation time between the relaxation time of the target micro region and the relaxation time of the reference region;

[0104] According to the difference value relaxation time as the thermal-optical response feature, identifying and quantifying the interface adhesion force reduction information or the micro-gap according to the thermal-optical response feature.

[0105] Specifically, a reference region adjacent to the target micro-region is selected to ensure that the reference region and the target micro-region have high consistency in material properties, film thickness, and environmental conditions, so as to effectively eliminate common-mode interference in subsequent difference analysis. The reference region is generally considered to be a healthy or known state region and does not contain interface adhesion force reduction information or micro-gaps to be detected. Wherein, the same local transient thermal disturbance is applied to the reference region as the target micro-region, and the transient optical response signal thereof is obtained, aiming to establish a reference response. Such same thermal disturbance ensures the consistency of the two regions in the heating condition, so that the subsequent signal comparison has comparability. In practical applications, the relaxation time of each is extracted from the transient optical response signals of the target micro-region and the reference region. The relaxation time can be understood as the time required for the material to dissipate heat or recover the optical response to the initial state after being disturbed by heat. The existence of interface adhesion force reduction or micro-gap will change the heat transfer efficiency of the film and the substrate interface, and then affect the thermal relaxation process of the film. Further, the difference between the relaxation time of the target micro-region and the relaxation time of the reference region is calculated. The difference value relaxation time as a thermal-optical response feature can more sensitively reflect the difference between the interface states of the target micro-region and the reference region. Through this difference processing, the common response caused by the thermal physical properties of the film material itself, environmental temperature fluctuations or measurement system drift can be effectively suppressed, so as to highlight the local abnormalities caused by interface adhesion force reduction or micro-gap. Thus, according to the difference value relaxation time as a thermal-optical response feature, the interface adhesion force reduction information or micro-gap can be identified and quantified. For example, a larger difference value relaxation time may indicate a more serious interface adhesion force reduction or a larger micro-gap.

[0106] The present application effectively solves the problem that single region analysis in traditional methods is easily disturbed by non-interface factors by introducing a reference region and performing differential relaxation time analysis. When the same local transient thermal disturbance is applied to the target micro region and the reference region, the transient optical response signals of the two regions will contain the inherent thermal response of the thin film material itself and the thermal response of the interface state. Since the reference region is selected as a healthy or known state, its interface thermal response is normal. If the target micro region has interface adhesion force reduction information or micro gaps, its interface thermal response will be abnormal. By extracting and comparing the relaxation times of the two regions and calculating the differential relaxation time, the inherent thermal response of the thin film material itself and the common response caused by environmental factors are largely canceled out. Therefore, the differential relaxation time can more purely and sensitively reflect the thermal transfer abnormality caused by the interface adhesion force reduction information or micro gaps of the target micro region, thereby improving the specificity and accuracy of the detection, and significantly improving the accuracy and sensitivity of the interface performance detection of the waterproof film of the optical element of the medical equipment. By introducing a reference region and using differential relaxation time as a thermal-optical response feature, the present application can effectively eliminate the interference of non-interface factors such as inherent properties of the thin film material, environmental temperature fluctuations, and measurement system noise on the detection results, so that the extracted feature more directly reflects the existence and degree of interface adhesion force reduction information or micro gaps. This makes even small interface defects can be reliably identified and quantified, thereby providing a more accurate and reliable means for quality control and early fault warning of the optical element of the medical equipment, avoiding potential risks caused by misjudgment or missed detection.

[0107] In some preferred embodiments, it is necessary to detect whether a specific region of a waterproof film of an optical element of a medical equipment has interface adhesion force reduction. First, a target micro region is selected in the region to be detected, and a reference region considered to be in a healthy state is selected adjacent to it. Then, a focused laser pulse is used as a local transient thermal disturbance source to irradiate the target micro region and the reference region with the same energy and duration. During the laser irradiation process and the subsequent cooling relaxation process, the transient reflected light signals of the two regions are captured by a high-sensitivity photodetector. The captured signals are processed, for example, by exponential decay fitting or Fourier transform analysis, to extract the relaxation time of the target micro region (e.g., τ_target) and the relaxation time of the reference region (e.g., τ_reference), respectively. Then, the differential relaxation time Δτ = τ_target - τ_reference is calculated. If Δτ is significantly greater than zero, it indicates that the interface heat transfer efficiency of the target micro region is lower than that of the reference region, which may indicate the presence of interface adhesion force reduction information or micro gaps. For example, a calibration curve or mapping table can be established in advance to map different Δτ values to specific interface adhesion force reduction degrees or micro gap sizes, thereby achieving quantitative identification of defects.

[0108] Further, the step of extracting the relaxation time of the target micro-area from the transient optical response signal of the target micro-area comprises:

[0109] performing multi-time-scale dynamic analysis on the transient optical response signal of the target micro-area;

[0110] According to the multi-time-scale dynamic analysis result, a plurality of relaxation components with different time constants are identified and separated;

[0111] According to the component with longer relaxation time and corresponding larger optical response amplitude among the plurality of relaxation components, a characteristic relaxation component of the adhesion force reduction or micro-gap at the interface between the thin film and the substrate is determined;

[0112] The time constant of the characteristic relaxation component is taken as the relaxation time of the target micro-area.

[0113] Wherein, the multi-time-scale dynamic analysis on the transient optical response signal of the target micro-area refers to the application of signal processing techniques such as Fourier transform, Laplace transform or wavelet analysis to decompose the captured transient optical response signal into components varying at different time scales, revealing the multiple relaxation modes that may exist in the signal caused by different physical processes. Further, according to the multi-time-scale dynamic analysis result, a plurality of relaxation components with different time constants are identified and separated, which can be understood as classifying the decomposed signal components into several independent relaxation processes through mathematical model fitting or signal deconvolution, each relaxation process being characterized by a specific time constant. These relaxation components may correspond to heat diffusion within the thin film, heat conduction at the interface between the thin film and the substrate, and heat retention caused by the micro-gap or adhesion force reduction between the thin film and the substrate, etc.

[0114] Specifically, according to the component with longer relaxation time and corresponding larger optical response amplitude among the plurality of relaxation components, the characteristic relaxation component of the adhesion force reduction or micro-gap at the interface between the thin film and the substrate is determined, which accurately locates the thermal response related to the interface defect. Generally, when there is an adhesion force reduction or micro-gap between the thin film and the substrate, the heat transfer at the interface will be hindered, resulting in prolonged heat retention time in the thin film, which is manifested as a component with longer relaxation time in the transient optical response signal. At the same time, due to the accumulation of heat in the defect area, this component usually accompanies a larger optical response amplitude. By identifying this specific relaxation component, the influence of the interface defect can be effectively distinguished from other thermal physical processes. Thus, the time constant of the characteristic relaxation component is taken as the relaxation time of the target micro-area, providing a direct and quantitative indicator for subsequent evaluation of the interface state between the thin film and the substrate. The time constant can directly reflect the efficiency of the interface heat conduction, thereby establishing a correlation with the degree of adhesion force reduction or micro-gap at the interface.

[0115] The present application can decompose the complex transient thermal response into multiple independent relaxation processes by performing multi-time scale dynamic analysis on the transient optical response signal. This decomposition allows different thermal relaxation mechanisms related to the internal thermal diffusion of the thin film, the thermal conduction at the film-substrate interface, and the interface defects (such as adhesion reduction or micro-gaps) to be clearly distinguished. By identifying specific relaxation components with longer relaxation times and corresponding larger optical response amplitudes, the heat retention effect caused by interface defects can be accurately captured. This is because interface defects can significantly hinder the effective transfer of heat from the thin film to the substrate, leading to the accumulation and slow dissipation of thermal energy in the defect area, which is manifested as a characteristic long relaxation time component in the optical response. Through multi-time scale analysis and identification of characteristic relaxation components, other irrelevant thermal responses can be effectively filtered out, focusing on the thermal-optical characteristics directly related to the adhesion reduction or micro-gaps at the film-substrate interface. This significantly improves the sensitivity and specificity of interface defect detection, allowing even minor interface abnormalities to be accurately identified and quantified, enabling precise extraction of the relaxation time of the target micro-region, especially in the presence of multiple thermal-physical process interactions, thereby providing more reliable and detailed data support for performance evaluation of the optical element waterproof film of the medical device.

[0116] Further, the step of identifying and quantifying the adhesion reduction information or micro-gaps at the interface according to the thermal-optical response characteristics comprises:

[0117] According to the thermal-optical response characteristics, consulting the pre-established calibration curve or mapping table, mapping the difference relaxation time to the quantitative value of the interface adhesion or the size parameter of the micro-gap;

[0118] According to the quantitative value or size parameter, identifying and quantifying the adhesion reduction information or micro-gaps at the interface.

[0119] Specifically, the pre-established calibration curve or mapping table refers to that, through experiments or simulations, the corresponding difference relaxation time is measured on samples with different degrees of interface adhesion force reduction or micro-gap, so as to establish a quantitative relationship between the difference relaxation time and the degree of interface adhesion force reduction or the size of the micro-gap. For example, the calibration curve can be a function curve describing the continuous change relationship between the difference relaxation time and the interface adhesion force or the size of the micro-gap; the mapping table can be a discrete data table listing the quantitative values or size parameters corresponding to a specific range of difference relaxation time, providing a standardized and quantifiable interpretation framework for the thermal-optical response characteristics. Among them, the quantitative value of the interface adhesion force can be understood as the interface bonding strength expressed in a specific unit (such as MPa, N / mm², etc.), or a dimensionless relative adhesion force index, used to evaluate the bonding tightness between the film and the substrate. The size parameter of the micro-gap refers to the width, depth or volume of the micro-gap, usually in units of microns or nanometers. The acquisition of these quantitative values and size parameters enables the evaluation of film performance to change from qualitative judgment to quantitative analysis, greatly improving the accuracy and objectivity of the detection.

[0120] The present application effectively solves the problem of the lack of direct and accurate correspondence between the thermal-optical response characteristics and the quantitative values of the actual interface state by introducing a pre-established calibration curve or mapping table. When the difference relaxation time between the relaxation time of the target micro area and the relaxation time of the reference area is obtained, the difference relaxation time as a thermal-optical response characteristic can be directly mapped to a specific quantitative value of the interface adhesion force reduction or a size parameter of the micro-gap by consulting the calibration curve or mapping table. This mapping mechanism ensures that the conversion process from physical measurement signals to actual performance indicators is standardized and repeatable, avoiding the introduction of subjective judgment, thereby improving the objectivity and reliability of the detection results. It is precisely due to this quantitative mapping that the performance evaluation of the waterproof film of the optical element of the medical device can achieve higher precision and consistency. Compared with only identifying the thermal-optical response characteristics, the present application converts the abstract physical response signal into a specific and operable quantitative index by introducing the calibration curve or mapping table, greatly improving the accuracy, comparability and standardization of the detection results. This enables medical device manufacturers and maintenance personnel to more objectively and accurately evaluate the performance of the waterproof film, timely detect potential failure risks, thereby effectively prolonging the service life of the medical device and ensuring its safety and reliability in clinical applications.

[0121] In a second aspect, referring to Figure 2 The present application also discloses a medical device optical element waterproof film performance detection system, which comprises:

[0122] The thermal disturbance application module 210 is configured to apply a local transient thermal disturbance to a target micro region of the waterproof film of the optical element of the medical device;

[0123] The optical signal capture module 220 is configured to acquire a transient optical response signal of the target micro region;

[0124] The signal analysis module 230 is configured to analyze the transient optical response signal to extract a thermal-optical response feature of the interface state of the waterproof film and the substrate, and identify and quantify the interface adhesion force reduction information or the micro gap according to the thermal-optical response feature.

[0125] The present application can realize non-contact and non-destructive detection of early degradation of the interface between the waterproof film and the substrate of the optical element of the medical device. By precisely introducing a transient thermal disturbance to a target micro region, then monitoring and acquiring the transient optical response signal generated thereby in real time, and deeply processing the captured signal to extract a thermal-optical response feature related to the interface state and identify and quantify the interface adhesion force reduction information or the micro gap, the present application can overcome the limitations of the prior art in detecting early and local interface defects, and provide an efficient and reliable solution for quality control of the optical element of the medical device. Traditional detection methods, such as macroscopic contact angle measurement and water immersion pressure testing, mainly rely on manual operation or simple physical measurement, but cannot accurately detect early and local degradation of the interface between the film and the substrate. When facing microscopic defects caused by harsh environments such as high-pressure steam sterilization, they often show hysteresis and limitations. The present application can non-contact and non-destructively detect the interface between the waterproof film and the substrate at the micron scale, directly capturing the thermal-optical response feature caused by the interface adhesion force reduction information or the micro gap. The present application can provide early warning of the impending failure of the waterproof barrier, effectively avoiding problems such as premature scrapping of the device, high maintenance costs, and damage to brand reputation caused by detection hysteresis of traditional methods.

[0126] The above only describes the embodiments of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for detecting the performance of a medical device optical element waterproof film, characterized in that, The method comprises the following steps: applying a local transient thermal disturbance to a target micro region of a waterproof film of a medical device optical element; acquiring a transient optical response signal of the target micro region; analyzing the transient optical response signal to extract a thermal-optical response feature of the waterproof film and substrate interface state, and identifying and quantifying interface adhesion force reduction information or micro gap according to the thermal-optical response feature; The step of analyzing the transient optical response signal to extract a thermal-optical response feature of the waterproof film and substrate interface state, and identifying and quantifying interface adhesion force reduction information or micro gap according to the thermal-optical response feature comprises: selecting a reference region adjacent to the target micro region on the waterproof film; applying the same local transient thermal disturbance to the target micro region to the reference region, and acquiring a transient optical response signal of the reference region; extracting the relaxation time of the target micro region from the transient optical response signal of the target micro region; extracting the relaxation time of the reference region from the transient optical response signal of the reference region; calculating the difference value relaxation time between the relaxation time of the target micro region and the relaxation time of the reference region; According to the difference value relaxation time as the thermal-optical response feature, according to the thermal-optical response feature, the interface adhesion force reduction information or micro gap is identified and quantified; The step of extracting the relaxation time of the target micro region from the transient optical response signal of the target micro region comprises: Performing multi-time scale dynamic analysis on the transient optical response signal of the target micro region; According to the multi-time scale dynamic analysis result, a plurality of relaxation components with different time constants are identified and separated; According to the component with longer relaxation time and corresponding larger optical response amplitude in the plurality of relaxation components, a characteristic relaxation component of the film and substrate interface adhesion force reduction or micro gap is determined; The time constant of the characteristic relaxation component is taken as the relaxation time of the target micro region.

2. The method of claim 1, wherein the medical device optical element waterproof film performance detection method is characterized by, The transient optical response signal is the light signal reflected or transmitted by the target micro region during the process of applying a local transient thermal disturbance, the film response process and the subsequent cooling relaxation process.

3. The method of claim 1, wherein the medical device optical element waterproof film performance detection method is characterized by, The step of applying a local transient thermal disturbance to a target micro region of a waterproof film of a medical device optical element comprises: applying a probing thermal stimulus to the target micro region, and capturing the initial optical response caused by the probing thermal stimulus; According to the initial optical response, the intensity, duration or waveform parameters of the local transient thermal disturbance are determined; According to the determined intensity, duration or waveform parameters, a local transient thermal disturbance is applied to the target micro region of the waterproof film of the medical device optical element.

4. The method of claim 3, wherein the medical device optical element waterproof film performance detection method is characterized by, The step of applying a probing thermal stimulus to the target micro region, and capturing the initial optical response caused by the probing thermal stimulus comprises: The scanning probing thermal stimulus adopts a focused energy beam to sequentially and briefly irradiate a plurality of sub-regions in the target micro region in the form of a preset low-energy pulse. capturing transient optical response signals of the plurality of sub-regions; performing deviation analysis on the transient optical response signals of the plurality of sub-regions to obtain the initial optical response of the target micro-region.

5. The method of claim 4, wherein the medical device optical element waterproof film performance detection method is characterized by, The step of performing deviation analysis on the transient optical response signals of the plurality of sub-regions to obtain the initial optical response of the target micro-region includes: performing analysis on the transient optical response signals of the plurality of sub-regions to identify a sub-region with the largest response deviation in the plurality of sub-regions; taking the transient optical response signal of the sub-region with the largest response deviation as the initial optical response of the target micro-region.

6. The method of claim 5, wherein the medical device optical element waterproof film performance detection method is characterized by, The step of identifying the sub-region with the largest response deviation in the plurality of sub-regions includes: calculating, for the transient optical response signals of the plurality of sub-regions, a difference measure of the transient optical response signals and a reference response signal of a healthy thin film; identifying, according to the difference measure, a sub-region with the largest difference measure as the sub-region with the largest response deviation.

7. The method of claim 1, wherein the medical device optical element waterproof film performance detection method is characterized by, The step of identifying and quantifying the interface adhesion force reduction information or micro-gap according to the thermal-optical response feature includes: consulting, according to the thermal-optical response feature, a pre-established calibration curve or mapping table, mapping the difference value relaxation time to a quantitative value of the interface adhesion force or a size parameter of the micro-gap; identifying and quantifying the interface adhesion force reduction information or micro-gap according to the quantitative value or the size parameter.

8. A system for performing a method of testing the performance of a medical device optical element water barrier film according to any one of claims 1-7, wherein, The system includes: a thermal disturbance application module configured to apply a local transient thermal disturbance to a target micro-region of a waterproof thin film of an optical element of a medical device; an optical signal capturing module configured to obtain a transient optical response signal of the target micro-region; a signal analysis module configured to analyze the transient optical response signal to extract a thermal-optical response feature of an interface state of the waterproof thin film and a substrate, and to identify and quantify interface adhesion force reduction information or a micro-gap according to the thermal-optical response feature.

Images