An edge-emitting laser cavity surface automatic detection jig

Abstract

An edge emitting laser cavity surface automatic detection jig, it is characterized in being including: fixed frame, including fixed part, first installation part and second installation part;The fixed part is used to be fixed with line;The first installation part is used to fix the mirror, to make the light ray of parallel incidence change angle and then emit;The second installation part is used to fix the camera, to obtain the image of the edge emitting laser cavity surface.The utility model can be installed on the line, realize direct detection after assembly, improve the integration, and greatly improve the efficiency.

Description

Technical Field

[0001] This utility model relates to the field of edge emitter cavity surface detection technology, specifically, to an automatic detection fixture for the cavity surface of an edge emitter laser. Background Technology

[0002] In the field of optoelectronics, edge-emitting lasers are important optical emitting devices, and their performance and quality play a crucial role in many application scenarios. The cavity surface state directly affects the output characteristics of edge-emitting lasers, such as output power, beam quality, and wavelength stability.

[0003] In current manufacturing processes, the inspection of side-emitting laser cavity surfaces faces numerous challenges. Traditional inspection methods often rely on manual operation, resulting in low efficiency and inconsistent accuracy due to human factors. With the continuous expansion of production scale and increasingly stringent product quality requirements, there is an urgent need for a solution that enables efficient, accurate, and automated inspection of side-emitting laser cavity surfaces to meet quality control needs in the production process and enhance product competitiveness.

[0004] The above background information is provided only to aid in understanding the inventive concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0005] To address this, this invention proposes an automatic inspection fixture for the cavity surface of a side-emitting laser, which can be installed on the production line to enable direct inspection after assembly, thereby improving integration and significantly increasing efficiency.

[0006] This utility model provides an automatic inspection fixture for the cavity surface of a side-emitting laser, characterized in that it includes:

[0007] The mounting bracket includes a fixing part, a first mounting part, and a second mounting part;

[0008] The fixing part is used to fix it to the production line;

[0009] The first mounting part is used to fix the reflector so that the parallel incident light rays are emitted after changing the angle;

[0010] The second mounting part is used to fix the camera in order to obtain an image of the cavity surface of the laser emitter.

[0011] Optionally, the aforementioned automatic inspection fixture for the cavity surface of a side-emitting laser is characterized by further comprising:

[0012] A processor for detecting the quality of the side-emitting laser cavity surface based on the image.

[0013] Optionally, the automatic inspection fixture for the cavity surface of a side-emitting laser is characterized in that the fixing frame further includes:

[0014] The third mounting part, located between the first mounting part and the second mounting part, is used to fix the amplification device so that the image obtained by the camera is clearer.

[0015] Optionally, the automatic inspection fixture for the cavity surface of a side-emitting laser is characterized in that the amplification factor of the amplification device is adjustable.

[0016] Optionally, the automatic inspection fixture for the cavity surface of a side-emitting laser is characterized in that the field of view of the camera can accommodate at least two vertically placed side-emitting lasers.

[0017] Optionally, the automatic inspection fixture for the cavity surface of a side-emitting laser is characterized in that the fixing frame further includes:

[0018] The fourth mounting part is used to fix the supplementary light to illuminate the cavity surface of the side-emitting laser.

[0019] Optionally, the automatic detection fixture for the cavity surface of a side-emitting laser is characterized in that the fourth mounting part fixes at least two supplementary lights in different directions to make the illumination of the laser cavity surface more uniform.

[0020] Optionally, the automatic inspection fixture for the cavity surface of a side-emitting laser is characterized in that the supplementary light is ring-shaped.

[0021] Optionally, the automatic inspection fixture for the cavity surface of a side-emitting laser is characterized in that the reflector is located inside the supplementary light.

[0022] Optionally, the automatic inspection fixture for the cavity surface of a side-emitting laser is characterized in that the first mounting part includes:

[0023] A reflector adjustment mechanism is used to adjust the spatial angle and position of the reflector.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] This invention utilizes a reflector to perform visual inspection of the cavity surface of an edge-emitting laser on the production line. During the inspection process, there is no need to remove the edge-emitting laser from the loading tray, reducing the risk of damage. It overcomes the risk of contamination or breakage caused by the traditional inspection method of removing and placing the laser, simplifies the inspection process, and improves inspection efficiency.

[0026] This utility model's mounting bracket comprises a fixing part, a first mounting part, and a second mounting part, each with a clearly defined function. The fixing part can be securely connected to the production line, ensuring the stability of the fixture during production and guaranteeing the accuracy and consistency of testing. The first mounting part is used to fix the reflector, and the second mounting part is used to fix the camera. This compact and reasonable layout is beneficial for achieving effective testing of the cavity surface of the edge-emitting laser.

[0027] This invention, through the cooperation of a reflector and a camera on a fixed frame, can automatically acquire images of the cavity surface of a side-emitting laser. Compared with traditional manual inspection methods, it greatly improves inspection efficiency, reduces errors and uncertainties caused by manual operation, and enhances the accuracy and reliability of inspection, thus contributing to the automation and intelligentization of the production process.

[0028] The reflector in this invention allows parallel incident light to exit at a different angle. This enables flexible adjustment of the incident angle of the light according to different detection requirements and the characteristics of the laser cavity surface, thereby better illuminating the cavity surface and obtaining a clear and complete cavity surface image, which is beneficial to improving the accuracy and effect of detection. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort. Other features, objects, and advantages of this utility model will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0030] Figure 1 This is a cross-sectional structural schematic diagram of an automatic detection fixture for the cavity surface of a side-emitting laser according to an embodiment of the present invention;

[0031] Figure 2 This is a cross-sectional structural schematic diagram of another automatic detection fixture for the cavity surface of an edge-emitting laser in this embodiment of the present invention;

[0032] Figure 3 This is a cross-sectional structural schematic diagram of another automatic detection fixture for the cavity surface of an edge-emitting laser in this embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram showing the positions of a supplementary light and a reflector in one embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram showing the positions of another supplementary light and reflector in an embodiment of this utility model;

[0035] Figure 6 This is a schematic diagram showing the positions of another supplementary light and reflector in an embodiment of this utility model.

[0036] 1-Fixing part;

[0037] 2-First Installation Section;

[0038] 3-Second Installation Section;

[0039] 4-Production line;

[0040] 5-Reflecting mirror;

[0041] 6-Camera;

[0042] 7-Edge laser;

[0043] 8-processor;

[0044] 9-Third Installation Department;

[0045] 10-Amplifying devices;

[0046] 11-Fourth Installation Department;

[0047] 12-Supplemental lighting;

[0048] 13-Light shielding part; Detailed Implementation

[0049] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0050] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0051] This utility model provides an automatic inspection fixture for the cavity surface of a side-emitting laser, which aims to solve the problems existing in the prior art.

[0052] The technical solutions of this utility model and this application solve the above-mentioned technical problems in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0053] like Figure 1 As shown, an automatic inspection fixture for the cavity surface of a side-emitting laser in this embodiment of the present invention includes:

[0054] The mounting bracket includes a fixing part, a first mounting part, and a second mounting part.

[0055] Specifically, the mounting frame, as the basic support structure of the entire automatic testing fixture, plays a crucial role in integrating and stabilizing the various functional components. It consists of a fixing part, a first mounting part, and a second mounting part, all of which work together to ensure the accurate and efficient operation of the testing fixture.

[0056] The fixing part is used to fix it to the production line.

[0057] Specifically, the core function of the fixing unit is to achieve a stable connection between the inspection fixture and the production line. By installing the fixing unit on the production line, the entire fixture can be precisely positioned at the inspection station of the edge-emitting laser, ensuring that the fixture will not shift or shake during continuous operation of the production line, thus providing a stable and reliable platform for the inspection work.

[0058] The mounting components are typically made of robust and durable metal materials, such as aluminum alloy and stainless steel, to ensure sufficient strength and rigidity to withstand vibrations and external forces that may occur during production line operation. Their shape and size are specifically designed based on the installation space of the production line and the overall layout of the fixtures; common shapes include flat plates and L-shaped designs, facilitating tight fixing to the production line using screws, bolts, and other connectors.

[0059] Stable fixation is a prerequisite for ensuring accurate testing. If the fixing part is not securely installed, the fixture will shake during production line operation, causing changes in the position of the reflector and camera. This will lead to deviations in the light propagation path and the camera's shooting angle, ultimately affecting the acquisition quality of the side-emitting laser cavity surface image and the reliability of the testing results.

[0060] The first mounting part is used to fix the reflector so that the parallel incident light rays are emitted after changing the angle.

[0061] Specifically, the first mounting section is mainly used to precisely fix the reflector. It determines the installation angle and position of the reflector, ensuring that parallel incident light rays, after being reflected by the reflector, can accurately reach the cavity surface of the side-emitting laser at a predetermined angle. Accurate light reflection angle is crucial for effective detection of the cavity surface of the side-emitting laser. If the reflector is unstable or the angle deviation on the first mounting section is too large, the light may not illuminate the cavity surface uniformly, resulting in unclear imaging in certain areas of the cavity surface. This affects the accurate identification of cavity surface defects and features, reducing the accuracy and reliability of the detection.

[0062] The height of the reflector is similar to the height of the edge-emitting laser, thus allowing for a complete field of view of the edge-emitting laser cavity surface.

[0063] In some embodiments, the first mounting part includes a reflector adjustment mechanism for adjusting the spatial angle and position of the reflector. This mechanism may include a rotary joint with a scale or a wedge-shaped shim with adjustable angle, allowing operators to precisely set the reflector's installation angle according to the design requirements of the detection optical path. The surface of the mounting part is typically finely machined to ensure the reflector remains stable after installation and does not change the light reflection angle due to minor vibrations or displacement. Furthermore, convenient fasteners, bolts, and other connecting components are designed for easy installation and removal of the reflector. By adjusting the installation angle of the reflector on the first mounting part, the direction of light propagation can be flexibly controlled to meet different detection needs.

[0064] The second mounting part is used to fix the camera in order to obtain an image of the cavity surface of the laser emitter.

[0065] Specifically, the second mounting section securely mounts the camera and ensures that its shooting direction is accurately aligned with the cavity surface of the edge-emitting laser after reflection by the mirror, thereby acquiring a clear and accurate image of the cavity surface. Furthermore, it provides a stable working environment for the camera, reducing interference from external vibrations and other factors on image acquisition.

[0066] The structural design of the second mounting section is customized according to the camera model and size. It is typically equipped with an adjustable mounting bracket, allowing for adjustment of the camera's position and angle within a certain range to meet the shooting angle requirements of different inspection scenarios. The mounting section employs shock-absorbing materials or structural designs, such as rubber pads and shock-absorbing springs, to isolate vibrations generated during production line operation, preventing vibrations from being transmitted to the camera and avoiding blurry or shaky images. Simultaneously, it has a reliable electrical connection interface, facilitating data transmission between the camera and computers or image analysis systems.

[0067] Clear and stable image acquisition is the basis for subsequent data analysis and detection. If the camera is improperly installed on the second mounting part and the shooting direction is deviated, it may not be able to completely capture the edge-emitting laser cavity surface, or there may be problems such as tilting and deformation in the captured image, resulting in the inability of the image analysis software to accurately identify the features and defects of the cavity surface, thereby affecting the judgment of the quality of the edge-emitting laser cavity surface.

[0068] In some embodiments, such as Figure 2 shown, an automatic detection fixture for an edge-emitting laser cavity surface further includes:

[0069] a processor for detecting the quality of the edge-emitting laser cavity surface according to the image.

[0070] Specifically, the processor is the "brain" of the automatic detection fixture for the edge-emitting laser cavity surface. Its core function is to deeply analyze the image of the edge-emitting laser cavity surface obtained by the camera, so as to detect the quality status of the cavity surface. It uses preset algorithms and models to extract key feature information from the image, such as the flatness of the cavity surface, whether there are cracks, the distribution of impurities, etc., and compares these features with the preset quality standards, and finally obtains a judgment result on whether the quality of the edge-emitting laser cavity surface is qualified.

[0071] First, the processor quickly and stably receives the cavity surface image data through the data interface connected to the camera. After receiving the image data, it immediately starts the image preprocessing program to perform operations such as noise reduction and contrast enhancement on the image to improve the clarity and quality of the image for subsequent feature extraction. Then, using a dedicated image recognition algorithm, the preprocessed image is analyzed pixel by pixel to identify various feature shapes and patterns on the cavity surface. Then, the extracted feature parameters are accurately compared with the standard quality parameters stored in the database. If all the feature parameters are within the standard range, it is determined that the cavity surface quality is qualified; if any parameter exceeds the standard range, the processor will give corresponding quality defect prompts according to the degree and type of the excess, such as "there are minor cracks on the cavity surface" and "the impurity content exceeds the standard". Finally, the processor outputs the detection result in an intuitive and easy-to-understand form, which can be displayed to the operator through a display screen or transmitted to the production line control system for timely adjustment of the production process.

[0072] To efficiently and accurately process large amounts of image data and perform complex analytical calculations, processors typically possess powerful computing capabilities. They may employ high-performance multi-core CPUs or be equipped with dedicated graphics processing units (GPUs) to accelerate image data processing. Simultaneously, they possess high-speed data storage and retrieval capabilities, enabling rapid storage and retrieval of standard quality parameters and historical detection data for comparative analysis. Furthermore, they exhibit excellent compatibility, allowing seamless connection and data exchange with various types of cameras, image analysis software, and production line control systems. The algorithms employed by the processor are customizable by those skilled in the art and represent conventional technical methods, thus not falling within the scope of this utility model's protection.

[0073] The processor plays a crucial role in the entire inspection fixture. It transforms the raw images captured by the camera into valuable quality inspection information, making it a key component in achieving automated inspection of the cavity surface of edge-emitting lasers. Without the processor's precise analysis, relying solely on manual observation of the cavity surface images to judge quality is not only inefficient but also prone to misjudgment due to the limitations of the human eye, making it difficult to accurately identify subtle defects. The processor, however, can complete the inspection task quickly and accurately, significantly improving inspection efficiency and accuracy, and providing strong assurance for the product quality of edge-emitting lasers.

[0074] In some embodiments, such as Figure 3 As shown, in an automatic inspection fixture for the cavity surface of a side-emitting laser, the fixing frame further includes:

[0075] The third mounting part, located between the first mounting part and the second mounting part, is used to fix the amplification device so that the image obtained by the camera is clearer.

[0076] Specifically, the third mounting section plays a crucial role in the automatic inspection fixture for the side-emitting laser cavity surface, and its core function is to securely fix the amplifying device. By precisely mounting the amplifying device at a specific position between the first and second mounting sections, it can process the light reflected from the side-emitting laser cavity surface that is about to enter the camera, thereby making the image acquired by the camera clearer and providing a higher quality image data foundation for the subsequent processor to accurately inspect the cavity surface quality.

[0077] From a structural design perspective, the third mounting section requires high stability and precise positioning. Its material is typically a metal compatible with the overall mounting frame, such as aluminum alloy, to ensure sufficient strength and rigidity, preventing displacement of the amplifying components due to vibrations or other factors during production line operation. In terms of installation, it is generally designed with specialized slots and screw holes to facilitate quick installation and removal of the amplifying components, while also allowing for fine-tuning of the component's position and angle to ensure optimal light processing. For example, it may be equipped with adjustable knobs or sliders, allowing operators to precisely adjust the tilt angle and horizontal position of the amplifying components according to actual testing needs, ensuring that light passes accurately through the amplifying components and is focused onto the camera's imaging area.

[0078] Amplifying devices, such as optical lens groups, mounted on the third mounting section primarily improve image clarity by refracting and focusing light. Because the reflector has a large field of view and needs to capture an image over a wide area, the edge-emitting laser occupies a relatively small portion of the image. The amplifying devices enlarge the edge-emitting laser portion, allowing the camera to obtain a clearer image of the edge-emitting laser cavity surface.

[0079] The third mounting section and its fixed amplifying device are crucial for improving detection accuracy. High-quality, clear images play a decisive role in the processor's accurate detection of the side-emitting laser's cavity surface quality. Without the effective fixation and precise positioning of the amplifying device by the third mounting section, the amplifying device cannot function properly, and the image quality acquired by the camera will be significantly reduced. This may lead to misjudgments by the processor when analyzing the image, failing to accurately identify defects and features on the cavity surface, thus affecting the overall quality detection results of the side-emitting laser. Therefore, the third mounting section, by ensuring the stable operation of the amplifying device, provides indispensable support for achieving high-precision automatic cavity surface detection.

[0080] In some embodiments, the amplification factor of the amplification device is adjustable. Because the feature dimensions of the side-emitting laser cavity surface vary widely, from large overall profiles to extremely fine cracks and impurities, different detection requirements necessitate different amplification factors. Adjustable amplification allows operators to flexibly select the most suitable magnification level based on the specific conditions of the cavity surface inspection, ensuring that both macroscopic cavity surface structures and microscopic imperfections are clearly presented in the images captured by the camera. This provides the processor with comprehensive and accurate image data, thereby significantly improving the accuracy and comprehensiveness of the detection.

[0081] To achieve adjustable magnification, amplifying devices typically employ a modular optical structure. For example, a lens group may consist of multiple lenses with different focal lengths, with their relative positions altered via a mechanical transmission mechanism. Operators can control the mechanism by manipulating knobs or buttons, causing certain lenses within the lens group to translate or rotate, thereby changing the equivalent focal length of the entire lens group and achieving continuous or stepped adjustment of the magnification. Furthermore, some advanced amplifying devices may also utilize electronic control technology, using built-in sensors and microprocessors to automatically adjust the magnification based on real-time analysis of the cavity surface image, achieving optimal imaging results.

[0082] This adjustable magnification feature gives the testing fixture greater adaptability and flexibility. On the one hand, compared to devices with fixed magnification, it avoids the cumbersome operation of frequently changing amplification devices because a single magnification cannot meet the needs of various testing scenarios, saving testing time and labor costs. On the other hand, operators can adjust the magnification in real time according to the actual situation of the cavity surface during the testing process, focusing on observing and analyzing areas of interest, greatly improving testing efficiency and accuracy. For example, if a preliminary inspection reveals a possible minor defect in a certain area of ​​the cavity surface, the magnification can be increased immediately for more detailed observation of that area, accurately determining the nature and severity of the defect.

[0083] In practical testing, when a comprehensive quality assessment of the cavity surface of a side-emitting laser is required, a lower magnification can be selected to quickly obtain overall information about the cavity surface, checking its flatness and for any obvious large-area damage. However, when precise detection of details such as suspected microcracks or impurities on the cavity surface is needed, increasing the magnification allows these minute features to be magnified to a sufficiently clear level, facilitating accurate identification and analysis by the processor. For example, when inspecting the cavity surface of a high-precision side-emitting laser, for some key features with dimensions at the micrometer level, flexible adjustment of the magnification ensures that the testing fixture accurately captures these minute details, providing strong support for product quality control.

[0084] In some embodiments, the field of view of the camera is capable of accommodating at least two vertically placed side-emitting lasers. In the automatic inspection fixture for side-emitting laser cavity surfaces, setting the camera's field of view to accommodate at least two vertically placed side-emitting lasers is primarily to improve robustness. In actual production lines, side-emitting lasers are often mass-produced, and due to fluctuations in the production line's movement, the positions of the side-emitting lasers often vary. A larger field of view ensures that the side-emitting lasers can always be captured within the field of view.

[0085] To achieve this required field of view, wide-angle lenses are typically used in cameras. Wide-angle lenses have a shorter focal length, providing a larger angle of view and thus a wider field of view. Simultaneously, the camera's position and angle need to be precisely adjusted during installation and debugging. Furthermore, it may be necessary to optimize the camera's software parameters, such as adjusting the image sensor's sampling area and resolution settings, to balance the relationship between field of view and image sharpness, ensuring that the detailed features of the laser cavity surface can still be clearly captured even with a large field of view.

[0086] In some embodiments, the fixing frame further includes:

[0087] The fourth mounting part is used to fix the supplementary light to illuminate the cavity surface of the side-emitting laser.

[0088] Specifically, the fourth installation unit plays a crucial role in fixing the supplementary lighting in the automatic inspection fixture for the side-emitting laser cavity surface. Its core function is to ensure that the supplementary lighting is stably installed in a position that can effectively illuminate the cavity surface of the side-emitting laser. The light emitted by the supplementary lighting provides additional illumination to the cavity surface, ensuring that the cavity surface is clearly illuminated under different ambient light conditions. This provides sufficient and uniform light for the camera to acquire high-quality images, thereby improving the accuracy of the inspection.

[0089] From a structural design perspective, the fourth mounting section requires a high degree of flexibility and stability. It typically employs adjustable mechanical structures, such as multi-jointed robotic arms or telescopic supports, allowing operators to flexibly adjust the illumination angle and distance of the supplementary lighting based on the actual installation position of the side-emitting laser and testing requirements. The main body of the mounting section is made of lightweight yet high-strength metals, such as aluminum alloy, ensuring that its own weight does not affect the overall stability of the fixture when supporting the supplementary lighting, while also possessing good durability. For fixing methods, it is equipped with specialized fastening devices, such as clamping bolts and clips, to firmly secure the supplementary lighting and prevent it from shifting due to vibration during production line operation.

[0090] The supplementary lighting installed on the fourth mounting section improves the illumination of the edge-emitting laser cavity surface in various scenarios. In low-light conditions on the production line, the supplementary lighting provides basic illumination, ensuring the camera can capture the overall contour and basic features of the cavity surface. When it is necessary to detect minute defects on the cavity surface, such as micro-cracks or impurity particles, the supplementary lighting can adjust its illumination angle to utilize the reflection and refraction properties of light, highlighting these subtle features and making them more visible in the camera's image. For example, obliquely shining the supplementary lighting at a specific angle can create shadows at cracks, enhancing their contrast with normal cavity surface areas, facilitating accurate identification by the subsequent processor.

[0091] The design of fixing the supplementary light in the fourth mounting section offers several advantages. In terms of inspection accuracy, stable and sufficient supplementary lighting ensures clear and detailed images captured by the camera, reducing inspection errors caused by insufficient light and improving the accuracy of cavity surface quality assessment. Regarding inspection efficiency, because the supplementary light can quickly adapt to different ambient light conditions, there is no need to spend extra time waiting for the ambient light to stabilize or to make complex ambient light modifications; inspection work can begin quickly, increasing the inspection output per unit time. In terms of adaptability to different production scenarios, whether in the complex lighting environment of an indoor laboratory or in the variable lighting conditions of a factory production workshop, the supplementary light can be flexibly adjusted through the fourth mounting section, providing reliable illumination support for the inspection of the cavity surface of the side-emitting laser.

[0092] In some embodiments, the fourth mounting part fixes at least two supplementary lights in different directions to make the illumination of the laser cavity surface more uniform. The fourth mounting part must not only ensure the stable installation of the supplementary lights but also achieve a precise layout of at least two supplementary lights in different directions, thereby illuminating the side-emitting laser cavity surface in an all-round and uniform manner. Through multi-directional light supplementation, potential blind spots in the cavity surface are eliminated, creating favorable conditions for the camera to capture high-quality, shadow-free, and detailed images, greatly improving the accuracy and reliability of the detection.

[0093] Given the need to fix at least two supplementary lights in different positions, the fourth mounting unit has a more complex and sophisticated structural design. It employs a highly flexible composite mechanical structure, integrating a multi-jointed robotic arm with a rotatable and translational mounting base. Each supplementary light is equipped with an independent adjustable mounting bracket, which can freely adjust its angle and position in three-dimensional space. This design allows operators to precisely position the supplementary lights according to the specific shape and size of the side-emitting laser and the testing requirements, achieving uniform illumination of the cavity surface. The main body of the mounting unit is still made of lightweight, high-strength aluminum alloy, ensuring that its weight does not affect the overall stability of the fixture when supporting multiple supplementary lights, while also possessing good durability to adapt to long-term production line working environments. For fixing, high-precision clamping bolts and special clips are used to firmly lock the supplementary lights, preventing displacement due to vibration during production line operation and ensuring that the supplementary lights are always in the optimal illumination position.

[0094] Multiple supplementary lights working in different directions significantly improve the illumination of the edge-emitting laser cavity surface. In low-light conditions on the production line, these lights provide simultaneous basic illumination from multiple angles, comprehensively illuminating the cavity surface. This ensures the camera can clearly capture the overall contour and basic features of the cavity surface, avoiding localized darkness or uneven illumination. When detecting minute defects on the cavity surface, such as microcracks or impurity particles, the supplementary lights adjust their respective illumination angles, utilizing light reflection, refraction, and mutual diffuse reflection to illuminate the cavity surface from multiple directions. This effectively eliminates shadows caused by a single light source, making minute defects clearer and more apparent in the camera images. For example, one set of supplementary lights illuminates the cavity surface at a horizontal angle, while another set provides auxiliary illumination at a vertical angle. This makes the shadows cast at cracks softer and more comprehensive, enhancing the contrast with normal cavity surface areas, facilitating accurate identification and analysis by the subsequent processor.

[0095] The design of fixing at least two auxiliary lights in different directions in the fourth mounting section brings many significant advantages. In terms of detection accuracy, uniform and sufficient multi-directional illumination ensures clear images captured by the camera, eliminating blind spots and revealing richer details. This greatly reduces detection errors caused by insufficient or uneven lighting, significantly improving the accuracy of cavity surface quality assessment. Regarding detection efficiency, because the multi-directional auxiliary lights can quickly adapt to different ambient light conditions, there is no need to spend extra time waiting for ambient light to stabilize or to make complex ambient light modifications; detection work can begin quickly, greatly increasing the detection output per unit time. In terms of adaptability to different production scenarios, whether in the complex and variable lighting environment of an indoor laboratory or in the harsh lighting conditions of a factory production workshop, the multi-directional auxiliary lights can flexibly adjust the illumination angle and position through the fourth mounting section, providing stable, reliable, and uniform illumination support for the detection of the side-emitting laser cavity surface, effectively ensuring the smooth progress of the detection work and the consistency of the detection results.

[0096] In some embodiments, the supplementary light is ring-shaped. The ring-shaped supplementary light can project light evenly onto the cavity surface from a surrounding angle, effectively reducing blind spots and creating favorable lighting conditions for the camera to capture high-quality, shadow-free, and detailed images, significantly improving the accuracy and reliability of detection. Due to the unique light-emitting structure of the ring-shaped supplementary light, it provides surrounding and soft light, significantly reducing the interference of reflections on cavity surface imaging, allowing the subtle features of the cavity surface to be presented more clearly.

[0097] To secure the ring-shaped fill light, the fourth mounting section employs a sophisticated and flexible mechanical structure. It may be equipped with a fully adjustable articulated arm, combined with a mounting base capable of flexible translation and rotation in both horizontal and vertical directions. This design allows operators to precisely adjust the spatial position and angle of the ring-shaped fill light according to the specific shape and size of the side-emitting laser and the actual testing requirements, ensuring uniform illumination of the cavity surface. The main body of the mounting section is made of lightweight yet high-strength aluminum alloy, ensuring stable support for the ring-shaped fill light without affecting the overall stability of the fixture due to its own weight, and possessing excellent durability sufficient to withstand long-term production line working environments. For securing the ring-shaped fill light, high-precision clamping bolts and specially designed adapter clips are used to firmly lock it in place, preventing displacement due to vibration during production line operation and ensuring the fill light is always in the optimal illumination position. Given the special shape of the ring-shaped fill light, the mounting bracket is specially designed to closely fit the contours of the fill light, providing stable support while cleverly avoiding the light propagation path, ensuring unobstructed illumination of the cavity surface.

[0098] Ring-shaped fill lights play a crucial role in the inspection of the cavity surface of edge-emitting lasers. In low-light conditions on the production line, the ring-shaped fill light provides basic illumination from various angles surrounding the cavity surface, ensuring comprehensive illumination and guaranteeing that the camera can clearly capture the overall outline and basic features of the cavity surface, avoiding localized dark areas or uneven lighting. The ring-shaped fill light has a uniform light distribution, without producing obvious bright spots or dark areas. When it is necessary to inspect for minute defects on the cavity surface, such as micro-cracks or impurity particles, the operator can adjust the illumination angle of the ring-shaped fill light through the fourth mounting section. Utilizing the reflection, refraction, and diffuse reflection characteristics of light, it provides supplementary illumination to the cavity surface from multiple directions. This effectively eliminates shadows caused by single-direction light source illumination, making minute defects clearer and more prominent in the camera image. For example, by fine-tuning the angle of the ring-shaped fill light so that its light shines obliquely onto the cavity surface at a specific angle, the shadows cast at cracks can be softened and made more comprehensive, enhancing the contrast with normal cavity surface areas, facilitating accurate identification and analysis by the subsequent processor.

[0099] The design of fixing a single ring-shaped supplementary light in the fourth mounting section offers several significant advantages. In terms of inspection accuracy, uniform and ample ambient lighting ensures clear images captured by the camera, eliminating blind spots and revealing richer details. This greatly reduces inspection errors caused by insufficient or uneven lighting, significantly improving the accuracy of cavity surface quality assessment. Regarding inspection efficiency, a single ring-shaped supplementary light can quickly adapt to different ambient light conditions, eliminating the need for waiting for ambient light to stabilize or complex ambient light modifications, allowing for rapid start-up of inspection work and significantly increasing inspection output per unit time. In terms of adaptability to different production scenarios, whether in the complex and variable lighting environment of an indoor laboratory or in the harsh lighting conditions of a factory production workshop, the ring-shaped supplementary light can flexibly adjust its illumination angle and position through the fourth mounting section, providing stable, reliable, and uniform illumination support for the inspection of edge-emitting laser cavity surfaces, effectively ensuring the smooth progress of inspection work and the consistency of inspection results. Furthermore, the soft light from the ring-shaped supplementary light reduces reflection interference on precision cavity surfaces, making it suitable for the inspection of edge-emitting laser cavity surfaces of various materials and surface treatments, demonstrating broad applicability.

[0100] In some embodiments, the reflector is located inside the supplementary light. The fourth mounting part plays a crucial role in the automatic inspection fixture for the edge-emitting laser cavity surface. Its core task is to securely mount the ring supplementary light and cleverly place the reflector inside the supplementary light. Through this unique design, the ring supplementary light can not only uniformly project light onto the edge-emitting laser cavity surface from a surrounding angle, reducing blind spots and providing ideal lighting conditions for the camera to capture high-quality, shadow-free, and detailed images, thus improving the accuracy and reliability of the inspection, but also optimize the light propagation path with the help of the internal reflector. The reflector can reflect light from a specific direction to a specific area of ​​the cavity surface, further enhancing the uniformity and targeting of the light, ensuring that all parts of the cavity surface are fully and accurately illuminated. At the same time, by utilizing the characteristic of the reflector to change the angle of light, it assists the camera in obtaining clear images of the cavity surface from different angles, thereby comprehensively improving the inspection effect.

[0101] To achieve the unique layout of the reflector within the fill light, the fourth mounting section employs an extremely sophisticated and complex mechanical structure. The fill light housing is made of lightweight, high-strength transparent materials, such as acrylic or special optical glass, ensuring both uniform light transmission and excellent durability. Inside the fill light, a dedicated bracket for fixing the reflector is designed. This bracket uses an adjustable mechanical structure, such as a rotating joint with a fine-tuning knob and a sliding track. Operators can precisely adjust the angle and position of the reflector according to the shape and size of the side-emitting laser and the testing requirements, ensuring that the reflector accurately reflects light to the desired location on the cavity surface. The fourth mounting section is equipped with a fully adjustable articulated arm, combined with a mounting base that can flexibly translate and rotate in both horizontal and vertical directions. This allows operators to flexibly adjust the spatial position of the fill light and internal reflector according to actual conditions, achieving optimal illumination and light reflection effects on the cavity surface. In terms of mounting method, the supplementary light is fixed to the fourth mounting part using high-precision clamping bolts and specially designed adapter clips to prevent displacement due to vibration during production line operation, ensuring that the supplementary light and reflector are always in the optimal working position. In addition, while the mounting bracket closely fits the contour of the supplementary light and the shape of the reflector, it is also carefully designed with a light transmission channel to ensure that the light is not obstructed inside the supplementary light and during reflection by the reflector, and can smoothly illuminate the cavity surface.

[0102] When the ambient light on the production line is dim, the ring-shaped supplementary light provides basic illumination from various angles surrounding the cavity surface, illuminating it from all directions. This ensures that the camera can clearly capture the overall outline and basic features of the cavity surface, avoiding localized darkness or uneven lighting. At this time, a reflector located within the supplementary light can further distribute and adjust the light. For example, when detecting minute defects on the cavity surface, such as micro-cracks or impurity particles, the operator adjusts the angle of the ring-shaped supplementary light and the reflector via the fourth mounting section. Utilizing the reflection and refraction of light, as well as the diffuse reflection characteristics of the supplementary light itself, it provides supplementary illumination to the cavity surface from multiple directions. The reflector reflects some light to specific areas of the cavity surface, making minute defects that might otherwise be difficult to detect due to insufficient light clearer and more prominent in the camera image. For instance, by fine-tuning the reflector angle so that the light hits the cavity surface at a specific angle, the shadows cast by cracks become softer and more comprehensive, enhancing their contrast with normal cavity surface areas, facilitating accurate identification and analysis by the subsequent processor. The reflector also has a light-shielding part around its perimeter to prevent the light from the fill light from shining directly into the reflector, thereby avoiding the light from the fill light from affecting the camera.

[0103] The fourth mounting section's design, which places the reflector within the supplementary lighting, offers numerous significant advantages. In terms of detection accuracy, the uniform and precise surrounding illumination, along with the reflector-assisted light optimization, ensures clear images captured by the camera, eliminating blind spots and revealing richer details. This greatly reduces detection errors caused by insufficient or uneven lighting, significantly improving the accuracy of cavity surface quality assessment. Regarding detection efficiency, the integrated design of the supplementary lighting and reflector allows the equipment to quickly adapt to different ambient light conditions. It eliminates the need for waiting for ambient light to stabilize or for complex ambient light modifications, enabling rapid commencement of detection work and significantly increasing detection output per unit time. In terms of adaptability to different production scenarios, whether in the complex and variable lighting environment of an indoor laboratory or in the harsh lighting conditions of a factory production workshop, this uniquely designed combination of supplementary lighting and reflector can flexibly adjust the illumination angle and position through the fourth mounting section. This provides stable, reliable, and uniform illumination support for the inspection of the cavity surface of the side-emitting laser, effectively ensuring the smooth progress of the inspection work and the consistency of the inspection results. In addition, the soft light from the ring fill light and the optimization of light by the reflector can reduce reflection interference on the precision cavity surface, making it suitable for edge-emitting laser cavity surface inspection of various materials and surface treatments, and has wide applicability.

[0104] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to implement or use this utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this utility model. Therefore, this utility model is not limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the substantive content of this utility model.

Claims

1. An automatic inspection fixture for the cavity surface of a side-emitting laser, characterized in that, include: The mounting bracket includes a fixing part, a first mounting part, and a second mounting part; The fixing part is used to fix it to the production line; The first mounting part is used to fix the reflector so that the parallel incident light rays are emitted after changing the angle; The second mounting part is used to fix the camera in order to obtain an image of the cavity surface of the laser emitter.

2. The automatic inspection fixture for the cavity surface of a side-emitting laser according to claim 1, characterized in that, Also includes: A processor for detecting the quality of the side-emitting laser cavity surface based on the image.

3. The automatic inspection fixture for the cavity surface of a side-emitting laser according to claim 1, characterized in that, The mounting bracket also includes: The third mounting part, located between the first mounting part and the second mounting part, is used to fix the amplification device so that the image obtained by the camera is clearer.

4. The automatic inspection fixture for the cavity surface of a side-emitting laser according to claim 3, characterized in that, The amplification factor of the amplifying device is adjustable.

5. The automatic inspection fixture for the cavity surface of a side-emitting laser according to claim 1, characterized in that, The field of view of the camera can accommodate at least two vertically placed side-emitting lasers.

6. The automatic inspection fixture for the cavity surface of a side-emitting laser according to claim 1, characterized in that, The mounting bracket also includes: The fourth mounting part is used to fix the supplementary light to illuminate the cavity surface of the side-emitting laser.

7. The automatic inspection fixture for the cavity surface of a side-emitting laser according to claim 6, characterized in that, The fourth mounting part fixes at least two supplementary lights in different directions to make the illumination of the laser cavity surface more uniform.

8. The automatic inspection fixture for the cavity surface of a side-emitting laser according to claim 6, characterized in that, The supplementary light is ring-shaped.

9. The automatic inspection fixture for the cavity surface of a side-emitting laser according to claim 8, characterized in that, The reflector is located inside the fill light.

10. The automatic inspection fixture for the cavity surface of a side-emitting laser according to claim 1, characterized in that, The first mounting part includes: A reflector adjustment mechanism is used to adjust the spatial angle and position of the reflector.

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