Optical lens light transmission detection device based on intelligent sensor

Abstract

The invention relates to the technical field of optical detection, in particular to an optical lens light transmission detection device based on an intelligent sensor, which comprises a plurality of laser transmitters, a collimating lens, a driving seat and a spectroscope, the plurality of laser emitters are arranged in a rectangular array, the laser emitters are mounted at the top end of the first mounting frame through an adjustable bracket, and the laser emitting direction is downward; the collimating mirror is mounted below the laser transmitter; the driving seat is located at the bottom end of the first mounting frame, the upper half portion of the driving seat can rotate, a plurality of air nozzles are arranged on the upper half portion of the driving seat in an annular array mode, the output directions of the air nozzles face upwards and directly face the lens, and air sprayed out of the air nozzles can form an air film to enable the lens to suspend; the spectroscope is located below the lens and used for conducting light path steering on the laser penetrating through the lens and guiding the laser to the laser imaging sensor. Through the synergistic effect of all the components, comprehensive detection of the light transmittance of the optical lens is achieved, and the strict requirement for lens quality evaluation is met.

Description

Technical Field

[0001] This invention relates to the field of optical inspection technology, and in particular to an optical lens transmittance detection device based on a smart sensor. Background Technology

[0002] As a core component of optical systems, the light transmittance of lenses directly affects the imaging quality, energy transmission efficiency, and other key performance characteristics of optical instruments. Therefore, it is crucial to conduct high-precision and high-efficiency testing of their light transmittance during lens production and application.

[0003] Currently, the light transmittance testing of optical lenses mainly employs a combination of manual visual inspection and traditional optical instrument testing, but this method has several shortcomings. Regarding laser emission, existing testing devices mostly use single-wavelength laser emitters, which cannot comprehensively reflect the lens's transmittance characteristics for different wavelengths of light. Furthermore, the fixed laser emission angle cannot be adaptively adjusted according to changes in the lens's curvature, resulting in low testing accuracy for non-planar lenses. Simultaneously, poor control of the laser beam's parallelism and stability easily introduces testing errors.

[0004] Regarding lens clamping, traditional devices typically use mechanical clamps to directly hold the lens. This contact-based clamping method easily scratches and contaminates the lens surface, affecting the lens's optical performance and detection accuracy. While some devices have attempted non-contact clamping, the clamping stability is insufficient, and the lens is prone to shaking and tilting during detection, causing laser beam path deviation and thus affecting the reliability of the detection results. Furthermore, for lenses of different sizes, frequent clamp changes are required, making operation cumbersome and reducing detection efficiency.

[0005] The laser receiving and detection section also has significant shortcomings. Existing devices have limited laser receiving sensors, either only capable of detecting overall transmittance and unable to identify localized transmission defects in the lens, such as bubbles or scratches; or only capable of visual defect detection, making it difficult to obtain accurate transmittance data. Furthermore, the optical path design of the laser power sensor and imaging sensor is flawed, making them prone to signal interference and affecting detection accuracy. Additionally, the sensor's installation position and calibration methods are inflexible, making it difficult to ensure precise alignment of the optical path, further reducing detection accuracy.

[0006] In summary, existing optical lens transmittance testing devices have significant shortcomings in terms of laser emission adaptability, lens clamping stability, comprehensiveness of receiving and testing, and environmental control, making it difficult to meet the requirements for high-precision and high-efficiency testing. Summary of the Invention

[0007] Therefore, it is necessary to provide an optical lens transmittance detection device based on intelligent sensors to address the above-mentioned technical problems. Through the synergistic effect of various components, high-precision, interference-free, and comprehensive detection of optical lens transmittance is achieved, meeting the stringent requirements for lens quality assessment in industrial production.

[0008] This invention provides an optical lens transmittance detection device based on a smart sensor, comprising:

[0009] Multiple laser emitters are arranged in a rectangular array. The laser emitters are mounted on the top of the first mounting bracket via adjustable brackets, and the laser emission direction is downward.

[0010] A collimating lens is mounted below the laser emitter;

[0011] The drive seat is located at the bottom of the first mounting bracket. The upper half of the drive seat is rotatable, and the upper half of the drive seat is arranged in a circular array with multiple jet nozzles. The output direction of the jet nozzles is upward and directly facing the lens. The gas ejected by the jet nozzles can form an air film, which makes the lens suspend.

[0012] A beam splitter, located below the lens, is used to redirect the laser light passing through the lens and guide it to the laser imaging sensor.

[0013] In one embodiment, the first mounting bracket includes a fixed plate, a horizontal plate, and connecting rods; multiple horizontal plates are provided, which are linearly spaced and have their surfaces facing the same direction; the fixed plate is located below the horizontal plates; two connecting rods are provided, which pass through both sides of the multiple horizontal plates respectively; the two ends of the connecting rods are bent and connected to the side ends of the fixed plate; and multiple first mounting holes are spaced apart on the horizontal plates.

[0014] In one embodiment, the adjustable bracket includes an arc-shaped plate, a first insert rod, a fixing ring, and a second insert rod. The first insert rod is inserted into the first mounting hole. One end of the first insert rod is connected to the middle of the outer surface of the arc-shaped plate. The other end of the first insert rod is connected to the driving end of a first driving member. The fixing ring is movably engaged with the inner surface of the arc-shaped plate. Two second insert rods are inserted between the arc-shaped plate and the fixing ring. The central axes of the two second insert rods coincide. One end of the second insert rod away from the fixing ring is connected to the driving end of a second driving member.

[0015] In one embodiment, the outer ring of the laser emitter has an annular groove, the fixing ring is sleeved on the annular groove, the fixing ring has a second mounting hole, the annular groove also has a longitudinally arranged positioning groove, a fastener is installed in the second mounting hole, and one end of the fastener abuts in the positioning groove.

[0016] In one embodiment, the fixing plate is provided with a plurality of internally threaded tubes arranged in a rectangular array, and the internally threaded tubes penetrate the fixing plate longitudinally. The outer ring of the collimator is provided with an externally threaded tube, which is threadedly connected to the internally threaded tube. Support legs are provided at the four corners of the fixing plate.

[0017] In one embodiment, the drive base includes a fixed base and a rotating disk, the rotating disk being rotatably mounted on the fixed base, and a plurality of the jet nozzles being arranged in a circular array on the upper surface of the rotating disk, directly opposite the edge of the lower surface of the lens.

[0018] In one embodiment, the inner ring of the rotating disk is provided with a plurality of laser power sensors, which are arranged in a rectangular array. Each laser imaging sensor is provided with a beam splitter above it, and a second mounting bracket is fixed between two adjacent legs, with the laser imaging sensor facing the second mounting bracket.

[0019] In one embodiment, the beam splitter is provided in three columns, and the height of the beam splitter in the three columns increases or decreases sequentially.

[0020] In one embodiment, the outer ring of the mounting base has multiple mounting slots, in which laser displacement sensors are installed. Two laser displacement sensors are symmetrically arranged about the central axis of the mounting base, and the laser displacement sensors face the edge of the lens.

[0021] In one embodiment, a piezoelectric ceramic fine-tuner is also installed in the mounting slot. The piezoelectric ceramic fine-tuner is electrically connected to the laser displacement sensor and is used to fine-tune the fixing base according to the feedback signal of the laser displacement sensor.

[0022] The aforementioned optical lens transmittance detection device based on intelligent sensors features multiple laser emitters at the top of the mounting bracket. Adjustable brackets allow for angle and spacing adjustments, ensuring laser coverage of the lens's center, edges, and quadrants. Upon activation, the laser emitters emit multiple beams vertically downwards, creating a comprehensive detection light source for different areas of the lens. The divergent beams emitted by the laser emitters are transmitted downwards to a collimating lens, which uses optical refraction to calibrate the divergent beams into parallel light. This parallel light characteristic ensures a regular beam path to the lens, providing a stable incident light source for subsequent transmittance analysis. The ring-shaped array of gas nozzles on the upper part of the drive unit activates, ejecting high-pressure gas to form a uniform gas film. The lens under test is placed above this gas film, where gas buoyancy balances the transmittance. The lens is suspended between the collimating lens and the beam splitter by gravity, maintaining a stable state without mechanical contact or stress deformation. To test the uniformity of light transmission in the circumferential direction of the lens, the upper part of the drive base can slowly rotate the lens. Parallel light calibrated by the collimating lens is incident perpendicularly on the suspended lens. Some light passes through the lens, while some is reflected by the lens surface. The laser light that passes through the lens continues to be transmitted downwards to the beam splitter. The beam splitter redirects the laser light path through the optical reflection / transmission principle to avoid conflict with the structure below. The redirected laser light is guided to the laser imaging sensor, which records image information such as the shape of the light spot and the intensity distribution after the laser light passes through the lens. By analyzing the uniformity of the light spot (whether there are dark spots or bright spots) and the sharpness of the edges, it is determined whether the light transmission of the lens meets the standard. This device uses a rectangular array of multiple laser emitters to cover the entire lens area. Combined with the rotatable drive mount, it can detect the light transmission performance of the lens at different positions (center / edge) and angles, avoiding the limitations of traditional single-source light source detection. A collimating lens calibrates the laser to parallel light, eliminating optical path errors caused by beam divergence and ensuring stable incident light. Air-float technology completely avoids lens deformation and surface scratches caused by mechanical contact, ensuring the detection state matches the lens's actual usage state and reducing the impact of external interference on the results. The beam splitter's optical path steering design resolves the spatial conflict between the imaging sensor and the main optical path, resulting in a compact device layout without affecting optical path integrity. Simultaneously, the laser imaging sensor accurately captures the light transmission signal, providing high-quality data for subsequent analysis. The combination of an adjustable bracket and air-float allows the device to adapt to optical lenses of different sizes and curvatures, improving its versatility and practicality. Through the synergistic effect of all components, high-precision, interference-free, and comprehensive detection of optical lens light transmission is achieved, meeting the stringent requirements for lens quality assessment in industrial production. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this invention 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 One of the three-dimensional structural schematic diagrams of the light transmittance detection device provided by the present invention;

[0025] Figure 2 A second three-dimensional structural schematic diagram of the light transmittance detection device provided by the present invention;

[0026] Figure 3 A three-dimensional structural schematic diagram of the mounting bracket provided by the present invention;

[0027] Figure 4 This is a schematic diagram of the adjustable bracket provided by the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the laser emitter provided by the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the drive seat provided by the present invention;

[0030] Figure 7 One of the schematic diagrams of the cross-sectional structure of the light transmittance detection device provided by the present invention;

[0031] Figure 8 This is a second schematic diagram of the cross-sectional structure of the light transmittance detection device provided by the present invention.

[0032] Figure label:

[0033] 100. First mounting bracket; 110. Fixing plate; 120. Horizontal plate; 121. First mounting hole; 130. Connecting rod; 140. Internally threaded tube; 150. Support leg; 200. Adjustable bracket; 210. Arc plate; 220. First insertion rod; 230. First driving component; 240. Fixing ring; 241. Second mounting hole; 250. Second insertion rod; 260. Second driving component; 270. Fastener; 300. Laser emitter; 310. Annular groove; 320. Positioning groove; 410. Collimating lens; 420. Beam splitter; 430. Second mounting bracket; 500. Lens; 600. Laser power sensor; 700. Drive base; 710. Fixing base; 711. Mounting groove; 720. Rotating disk; 810. Nozzle; 820. Laser displacement sensor; 830. Piezoelectric ceramic fine adjuster; 900. Laser imaging sensor. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] The following is combined Figures 1 to 8 This invention describes an optical lens transmittance detection device based on a smart sensor.

[0036] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, in one embodiment, an optical lens transmittance detection device based on a smart sensor includes multiple laser emitters 300, a collimating lens 410, a drive base 700, and a beam splitter 420. The multiple laser emitters 300 are arranged in a rectangular array and are mounted on the top of a first mounting bracket 100 via an adjustable bracket 200, with the laser emission direction facing downwards. The collimating lens 410 is mounted below the laser emitters 300. The drive base 700 is located at the bottom of the first mounting bracket 100. The upper half of the drive base 700 is rotatable and has multiple nozzles 810 arranged in a circular array on the upper half of the drive base 700. The output direction of the nozzles 810 is upwards and directly facing the lens 500. The gas ejected from the nozzles 810 can form a gas film, causing the lens 500 to suspend. The beam splitter 420 is located below the lens 500 and is used to redirect the laser light passing through the lens 500 and guide it to a laser imaging sensor 900.

[0037] The aforementioned optical lens transmittance detection device based on intelligent sensors features multiple laser emitters 300 at the top of the first mounting bracket 100, whose angles and spacing are adjusted via an adjustable bracket 200. This ensures that the lasers cover the center, edges, and quadrants of the lens 500 under test. Upon activation of the laser emitters 300, multiple laser beams are emitted, pointing vertically downwards to form a comprehensive detection light source covering different areas of the lens 500. The divergent beams emitted by the laser emitters 300 are transmitted downwards to the collimating lens 410, which uses optical refraction to calibrate the divergent beams into parallel light. This parallel light characteristic ensures a regular beam path incident on the lens 500, providing a stable incident light source for subsequent analysis of transmittance characteristics. The annular array of gas nozzles on the upper part of the drive base 700 is activated, ejecting high-pressure gas to form a uniform gas film. The lens 500 under test is placed above this gas film, and the gas buoyancy balances the weight of the lens 500. The lens 500 is suspended between the collimating lens 410 and the beam splitter 420, in a stable state without mechanical contact or stress deformation. If it is necessary to test the circumferential transmission consistency of the lens 500, the upper part of the drive seat 700 can drive the lens 500 to rotate slowly. Parallel light calibrated by the collimating lens 410 is incident perpendicularly on the suspended lens 500. Some light passes through the lens 500, and some is reflected by the surface of the lens 500. The laser light passing through the lens 500 continues to be transmitted downward to the beam splitter 420. The beam splitter 420 redirects the laser light path through the optical reflection / transmission principle to avoid conflict with the structure below. The redirected laser light is guided to the laser imaging sensor 900. The sensor records image information such as the shape of the light spot and the intensity distribution after the laser light passes through the lens 500. By analyzing the uniformity of the light spot (whether there are dark spots or bright spots) and the edge sharpness, it is determined whether the light transmittance of the lens 500 meets the standard. This device uses a rectangular array of multiple laser emitters 300 to cover the entire area of ​​lens 500. Combined with the rotatable function of the drive base 700, it can detect the light transmission performance of lens 500 at different positions (center / edge) and angles, avoiding the limitations of traditional single-source light source detection. The collimating lens 410 calibrates the laser to parallel light, eliminating optical path errors caused by beam divergence and ensuring stable incident light. Air-float technology completely avoids lens 500 deformation and surface scratches caused by mechanical contact, ensuring that the detection state is consistent with the actual usage state of lens 500 and reducing the impact of external interference on the results. (The last sentence appears to be incomplete and possibly refers to a separate, unrelated function: "Spectroscopy...") The optical path reversal design of lens 420 resolves the spatial conflict between the imaging sensor and the main optical path, resulting in a compact device layout without affecting the integrity of the optical path. Meanwhile, the laser imaging sensor 900 can accurately capture the transmitted light signal, providing high-quality data for subsequent analysis. The combination of the adjustable bracket 200 and the air-float suspension allows the device to adapt to optical lenses 500 of different sizes and curvatures, improving the versatility and practicality of the equipment. Through the synergistic effect of various components, high-precision, interference-free, and comprehensive detection of the light transmittance of the optical lens 500 is achieved, meeting the stringent requirements for quality assessment of lens 500 in industrial production.

[0038] like Figure 3 As shown, in one embodiment, the first mounting bracket 100 includes a fixing plate 110, a horizontal plate 120, and a connecting rod 130; multiple horizontal plates 120 are provided, and the multiple horizontal plates 120 are linearly spaced apart, and the surfaces of the multiple horizontal plates 120 face the same direction; the fixing plate 110 is located below the horizontal plates 120; two connecting rods 130 are provided, and the two connecting rods 130 respectively pass through the two sides of the multiple horizontal plates 120; the two ends of the connecting rods 130 are bent and connected to the side ends of the fixing plate 110; multiple first mounting holes 121 are spaced apart on the horizontal plates 120.

[0039] Specifically, the horizontal plate 120 and the connecting rod 130 form a top support frame. The linearly spaced horizontal plates 120 provide multi-layer / multi-column mounting positions for the laser emitter 300, ensuring the stability of the rectangular array layout. The connecting rod 130 passes through both sides of the horizontal plate 120 and bends to connect to the fixing plate 110, forming a rigid structure of "upper frame + lower fixing" to reduce vibration transmission during device operation. The first mounting hole 121 provides a pluggable mounting interface for the adjustable bracket 200. By selecting different mounting holes, the lateral spacing of the laser emitter 300 can be adjusted to adapt to the detection requirements of lenses 500 of different sizes. The rigid structure design ensures the stability of the laser emitter 300 during detection, reducing the interference of vibration on the optical path. Multiple first mounting holes 121 support flexible adjustment of the spacing of the laser emitter 300, adapting to lenses 500 of different sizes such as φ10mm-φ100mm, improving the versatility of the device.

[0040] like Figure 4 As shown, in one embodiment, the adjustable bracket 200 includes an arc-shaped plate 210, a first insert rod 220, a fixing ring 240, and a second insert rod 250. The first insert rod 220 is inserted into the first mounting hole 121. One end of the first insert rod 220 is connected to the middle of the outer surface of the arc-shaped plate 210. The other end of the first insert rod 220 is connected to the driving end of the first driving member 230. The fixing ring 240 is movably engaged with the inner surface of the arc-shaped plate 210. Two second insert rods 250 are inserted between the arc-shaped plate 210 and the fixing ring 240. The central axes of the two second insert rods 250 coincide. One end of the second insert rod 250 away from the fixing ring 240 is connected to the driving end of the second driving member 260.

[0041] Specifically, the first driving component 230 drives the first insert rod 220 to rotate, which in turn drives the arc plate 210 to rotate, thereby achieving adjustment of the laser emitter 300 in the first direction. The inner surface of the arc plate 210 has an arc-shaped trajectory, and the fixing ring 240 can rotate along the arc surface. In conjunction with two coaxial second insert rods 250 (equivalent to rotation axes), the second driving component 260 drives the second insert rods 250 to rotate, which in turn drives the fixing ring 240 and the laser emitter 300 to rotate around the axis, thereby achieving fine adjustment of the emission angle (adjustable from 0° to 30°). This allows for flexible adaptation to the detection requirements of lenses 500 with different curvatures (e.g., convex mirrors require adjustment of the laser incident angle to cover the edge area). The driving component enables automated adjustment, reducing manual operation errors and improving adjustment accuracy (angle adjustment error ≤ 0.1°).

[0042] like Figure 5 As shown, in one embodiment, the outer ring of the laser emitter 300 is provided with an annular groove 310, the fixing ring 240 is sleeved on the annular groove 310, the fixing ring 240 is provided with a second mounting hole 241, the annular groove 310 is also provided with a longitudinally arranged positioning groove 320, a fastener 270 is installed in the second mounting hole 241, and one end of the fastener 270 abuts against the positioning groove 320.

[0043] Specifically, the fixing ring 240 fits the laser emitter 300 through the annular groove 310 to achieve radial fixation (preventing left and right swaying); the longitudinal positioning groove 320 cooperates with the fastener 270. When the fastener 270 abuts against the positioning groove 320, it not only restricts the circumferential rotation of the laser emitter 300, but also allows for fine adjustment of the longitudinal height along the positioning groove 320 (to adapt to the position of the collimating lens 410); the double fixation (radial + circumferential) avoids the offset of the laser emitter 300 during detection and ensures the stability of the optical path; the longitudinal fine adjustment function facilitates the calibration of the coaxiality between the laser and the collimating lens 410, reducing detection errors caused by optical path deviation.

[0044] In one embodiment, a plurality of internally threaded tubes 140 are provided on the fixing plate 110, the plurality of internally threaded tubes 140 are arranged in a rectangular array, and the internally threaded tubes 140 penetrate the fixing plate 110 longitudinally. An externally threaded tube is provided on the outer ring of the collimating lens 410, and the externally threaded tube is threadedly connected to the internally threaded tubes 140. Support legs 150 are provided at the four corners of the fixing plate 110.

[0045] Specifically, the threaded connection between the internally threaded tube 140 and the externally threaded tube enables the height adjustment of the collimating lens 410 (rotating the collimating lens 410 changes its distance from the laser emitter 300), ensuring that the center of the collimating lens 410 is coaxial with the emission center of the laser emitter 300; the rectangular array of internally threaded tubes 140 corresponds to the rectangular array of the laser emitter 300, ensuring that each laser beam can accurately pass through the corresponding collimating lens 410; the support leg 150 raises the height of the fixing plate 110, reserving installation space for components such as the lens 500 and beam splitter 420 below, while enhancing the overall stability of the device; for example, the height adjustment accuracy of the threaded connection can reach 0.01mm, ensuring that the collimating lens 410 is accurately aligned with the laser beam, improving the parallel light calibration effect; the design of the support leg 150 avoids direct contact between the device and the table, reducing the transmission of external vibrations, while also facilitating the maintenance and adjustment of the components below.

[0046] like Figure 6 As shown, in one embodiment, the drive base 700 includes a fixed base 710 and a rotating disk 720. The rotating disk 720 is rotatably mounted on the fixed base 710. A plurality of jet nozzles 810 are arranged in a ring array on the upper surface of the rotating disk 720 and are directly opposite the edge of the lower surface of the lens 500.

[0047] Specifically, the rotating disk 720 is rotatably connected to the fixed base 710 via bearings and other structures, and can rotate around its central axis (e.g., rotating at a uniform speed of 360°). The annular array of nozzles 810 sprays high-pressure gas onto the lower edge of the lens 500, forming an annular gas film below the lens 500. The gas pressure balances the gravity of the lens 500, achieving levitation. When the rotating disk 720 rotates, the nozzles 810 rotate synchronously, ensuring a uniform distribution of the gas film's supporting force on the lens 500 (avoiding excessive local pressure that could cause the lens 500 to tilt). The uniform supporting force of the gas film prevents deformation of the lens 500 due to uneven force, ensuring that the detection state matches the actual usage state. The rotation of the rotating disk 720 can detect differences in light transmission in the circumferential direction of the lens 500 (e.g., uneven light transmission caused by edge processing errors), improving the comprehensiveness of the detection.

[0048] In one embodiment, the inner ring of the rotating disk 720 is provided with a plurality of laser power sensors 600, which are arranged in a rectangular array. Each laser imaging sensor 900 is provided with a beam splitter 420 above it. A second mounting bracket 430 is fixed between two adjacent legs 150, and the laser imaging sensor 900 is directly opposite the second mounting bracket 430.

[0049] Specifically, after the laser beam passes through the lens 500, part of the beam directly illuminates the laser power sensor 600 on the inner ring of the rotating disk 720 (detecting the absolute value of the light intensity), while part of the beam is reflected by the beam splitter 420 to the laser imaging sensor 900 (capturing the shape of the light spot). The rectangular array of laser power sensors 600 corresponds to the array of laser emitters 300, achieving a one-to-one correspondence between "emission" and "reception," accurately acquiring the transmittance of each area (transmittance = received light intensity / emitted light intensity). The second mounting bracket 430 fixes the laser imaging sensor 900, ensuring that it is aligned with the reflected light path of the beam splitter 420, guaranteeing clear imaging. The laser power sensor 600 provides quantitative transmittance data, while the laser imaging sensor 900 captures the image features of defects (such as bubbles and scratches), achieving a dual evaluation of "quantitative + qualitative." The one-to-one corresponding array design ensures the correlation between data and position, facilitating the location of areas with abnormal light transmission (such as low transmittance at a certain point on the edge of the lens 500).

[0050] In one embodiment, the beam splitter 420 is provided with three columns, and the height of the three columns increases or decreases sequentially.

[0051] Specifically, the three columns of beam splitters 420 at different heights correspond to the upper, middle, and lower regions (or left, middle, and right regions) of the lens 500, respectively, and can receive transmitted beams at different heights. The increasing / decreasing height design avoids mutual obstruction of laser beams in different regions during reflection, ensuring that each column of beam splitters 420 only receives the beam of its corresponding region, thus guaranteeing the independence of the imaging signal. It also eliminates the overlapping interference of beams in different regions, enabling the imaging sensor to clearly capture the details of the light spot in each region (such as scratches on the upper edge of the lens 500 and bubbles on the lower edge, which can be imaged separately). The multi-column design adapts to the detection needs of large-size lenses 500, improving the accuracy of identifying local defects.

[0052] In one embodiment, the outer ring of the mounting base 710 is provided with a plurality of mounting slots 711, and a laser displacement sensor 820 is installed in the mounting slot 711. Two laser displacement sensors 820 are symmetrically arranged with the central axis of the mounting base 710 as the axis, and the laser displacement sensor 820 faces the edge of the lens 500.

[0053] Specifically, the laser displacement sensor 820 emits a laser towards the edge of the lens 500 and calculates the spatial position (such as horizontal offset and vertical deviation) of the lens 500 edge by receiving the time difference / phase difference of the reflected light. Two symmetrically arranged sensors detect from opposite directions, which can comprehensively determine whether the lens 500 is tilted (if the offset on one side is greater than that on the other side, it indicates that the lens 500 is tilted). It can provide real-time feedback on the position information of the lens 500 and promptly detect suspension deviations caused by airflow fluctuations (detection accuracy can reach ±0.001mm). The symmetrical arrangement improves the accuracy of position judgment and avoids the one-sidedness of single sensor detection.

[0054] In one embodiment, a piezoelectric ceramic fine-tuner 830 is also installed in the mounting slot 711. The piezoelectric ceramic fine-tuner 830 is electrically connected to the laser displacement sensor 820 and is used to fine-tune the fixed base 710 according to the feedback signal of the laser displacement sensor 820.

[0055] Specifically, the laser displacement sensor 820 transmits the detected position deviation signal (such as a 0.01mm offset of the lens 500) to the control system. The system calculates the adjustment amount and drives the piezoelectric ceramic fine adjuster 830. The piezoelectric ceramic has the characteristic of "generating nanoscale deformation under voltage drive". Through the tiny deformation, it drives the fixed base 710 (and the rotating disk 720 and air nozzle) to fine adjust, which cancels the position deviation of the lens 500 (such as if the lens 500 shifts to the left, the fine adjustment fixed base 710 moves to the right), forming a closed-loop control. The closed-loop control realizes real-time fine adjustment, keeping the position deviation of the lens 500 within 0.005mm, ensuring the stability of the optical path. The piezoelectric ceramic has high fine adjustment accuracy (nanoscale), avoiding secondary deviations caused by over-adjustment and significantly improving detection repeatability.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An optical lens transmittance detection device based on a smart sensor, characterized in that, include: Multiple laser emitters are arranged in a rectangular array. The laser emitters are mounted on the top of the first mounting bracket via adjustable brackets, and the laser emission direction is downward. A collimating lens is mounted below the laser emitter; The drive seat is located at the bottom of the first mounting bracket. The upper half of the drive seat is rotatable, and the upper half of the drive seat is arranged in a circular array with multiple jet nozzles. The output direction of the jet nozzles is upward and directly facing the lens. The gas ejected by the jet nozzles can form an air film, which makes the lens suspend. A beam splitter, located below the lens, is used to redirect the laser light passing through the lens and guide it to the laser imaging sensor.

2. The optical lens transmittance detection device based on a smart sensor according to claim 1, characterized in that, The first mounting bracket includes a fixed plate, a horizontal plate, and connecting rods; multiple horizontal plates are provided, which are linearly spaced and have their surfaces facing the same direction; the fixed plate is located below the horizontal plates; two connecting rods are provided, which pass through both sides of the multiple horizontal plates respectively; the two ends of the connecting rods are bent and connected to the side of the fixed plate; and multiple first mounting holes are spaced apart on the horizontal plates.

3. The optical lens transmittance detection device based on a smart sensor according to claim 2, characterized in that, The adjustable bracket includes an arc-shaped plate, a first insert rod, a fixing ring, and a second insert rod. The first insert rod is inserted into the first mounting hole. One end of the first insert rod is connected to the middle of the outer surface of the arc-shaped plate. The other end of the first insert rod is connected to the driving end of the first driving member. The fixing ring is movably engaged with the inner surface of the arc-shaped plate. Two second insert rods are inserted between the arc-shaped plate and the fixing ring. The central axes of the two second insert rods coincide. One end of the second insert rod away from the fixing ring is connected to the driving end of the second driving member.

4. The optical lens transmittance detection device based on a smart sensor according to claim 3, characterized in that, The outer ring of the laser emitter has an annular groove, the fixing ring is sleeved on the annular groove, the fixing ring has a second mounting hole, the annular groove also has a longitudinally arranged positioning groove, a fastener is installed in the second mounting hole, and one end of the fastener abuts in the positioning groove.

5. The optical lens transmittance detection device based on a smart sensor according to claim 4, characterized in that, The fixing plate is provided with multiple internally threaded tubes arranged in a rectangular array, and the internally threaded tubes penetrate the fixing plate longitudinally. The collimator is provided with an externally threaded tube on its outer ring, and the externally threaded tube is threadedly connected to the internally threaded tube. Support legs are provided at the four corners of the fixing plate.

6. The optical lens transmittance detection device based on a smart sensor according to claim 5, characterized in that, The drive base includes a fixed base and a rotating disk. The rotating disk is rotatably mounted on the fixed base. A plurality of the jet nozzles are arranged in a ring array on the upper surface of the rotating disk and are directly opposite the edge of the lower surface of the lens.

7. The optical lens transmittance detection device based on a smart sensor according to claim 6, characterized in that, The inner ring of the rotating disk is provided with multiple laser power sensors, which are arranged in a rectangular array. Each laser imaging sensor is provided with a beam splitter above it. A second mounting bracket is fixed between two adjacent legs, and the laser imaging sensor is directly facing the second mounting bracket.

8. The optical lens transmittance detection device based on a smart sensor according to claim 7, characterized in that, The beam splitter is arranged in three columns, and the height of the beam splitter in the three columns increases or decreases sequentially.

9. The optical lens transmittance detection device based on a smart sensor according to claim 8, characterized in that, The outer ring of the mounting base has multiple mounting slots, and laser displacement sensors are installed in the mounting slots. Two laser displacement sensors are symmetrically arranged with the central axis of the mounting base as the axis, and the laser displacement sensors are facing the edge of the lens.

10. The optical lens transmittance detection device based on a smart sensor according to claim 9, characterized in that, A piezoelectric ceramic fine-tuner is also installed in the mounting slot. The piezoelectric ceramic fine-tuner is electrically connected to the laser displacement sensor and is used to fine-tune the fixing base according to the feedback signal of the laser displacement sensor.

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