An optical lens detection device

Abstract

The application belongs to the technical field of optical detection, and particularly relates to an optical lens detection device, which comprises a base, an emitter, a supporting seat and a receiver are installed on the base, a lens is placed on the supporting seat, a first air bag is arranged between the emitter and the lens and between the lens and the receiver respectively, and is used for filling an optical path space and discharging air; the first air bag is communicated with a second air bag through a pipeline to form a closed air path, the second air bag is provided with a gas transfer mechanism, the gas transfer mechanism comprises a pressing piece and a first elastic piece, and the second air bag is a concertina type air bag body; when the pressing piece is driven by external force, the application avoids the airflow violent disturbance caused by the traditional blowing cleaning mode, effectively cleans the suspended dust on the detection optical path, guarantees the stability of the detection light propagation environment, improves the accuracy of the detection signal, and meets the demand for high-precision detection in the lens processing process.

Description

Technical Field

[0001] This invention relates to the field of optical inspection technology, and in particular to an optical lens inspection device. Background Technology

[0002] In the lens manufacturing process, optical performance is the core indicator determining the qualification of lens products. Therefore, optical detectors are needed to accurately inspect lenses to control the product qualification rate and ensure that key performance characteristics such as optical imaging and light transmission meet usage requirements. During optical inspection, dust, impurities, and other particulate matter easily become suspended in the inspection space between the detector and the lens. These suspended contaminants can block and scatter the inspection light, interfering with the normal illumination and propagation of light, leading to signal distortion, reduced inspection accuracy, and an inability to accurately determine optical performance defects in the lens. To address this issue, a dynamic lens optical detector has been proposed in existing technology. The core advantage of this detector lies in its ability to dynamically inspect lenses from multiple angles, expanding the inspection coverage, and it also has a function to clean suspended dust along the inspection optical path, attempting to improve inspection accuracy by removing floating dust.

[0003] Currently, the dynamic lens optical detector primarily uses air blowing to remove floating dust. This involves blowing gas into the detection optical path to remove suspended dust and impurities from the detection area, thus reducing interference from floating dust. However, the air blowing process causes severe airflow disturbances in the detection optical path. Since the detection light is highly sensitive to the stability of its propagation environment, these disturbances can lead to abnormal light refraction and scattering. This not only fails to improve detection accuracy but also further interferes with the stability of the detection signal, resulting in deviations in the detection results and failing to meet the high-precision detection requirements of lens manufacturing. Specifically, airflow disturbances cause uncontrollable deviations in the light path, resulting in fluctuations in the detection signal. Especially in the detection of lenses with micron-level precision, this interference significantly affects the accuracy of defect identification, leading to frequent misjudgments or missed detections. Furthermore, in practical applications, it is difficult to precisely control the intensity and direction of the airflow, easily creating eddies or uneven pressure in the detection area, further exacerbating the instability of light propagation and resulting in poor repeatability of the detection results. This fails to meet the high-precision and high-reliability detection requirements of industrial production.

[0004] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0005] The present invention provides an optical lens inspection device, which aims to solve at least one of the above-mentioned technical problems.

[0006] This invention provides the following technical solution: An optical lens inspection device includes a base, on which a transmitter, a support, and a receiver are mounted. A lens is placed on the support. A first airbag is provided between the transmitter and the lens, and between the lens and the receiver, for filling the optical path space and expelling air. The first airbag is connected to the second airbag through a pipe to form a closed air passage. The second airbag is equipped with a gas transfer mechanism, which includes a holding member and a first elastic member. The second airbag is an accordion-type airbag. When the holding member is driven by an external force, the holding member pushes the bottom of the second airbag away from its top, causing the second airbag to expand and draw gas from the first airbag. The first elastic member is installed between the top and bottom of the second airbag. The first elastic member drives the second airbag to reset after the holding member is removed, realizing gas return. When the first airbag inflates, it fills the space of the light path, expels air, and blocks the dust channel. When the first airbag contracts, it makes way for the light path, allowing the light beam to pass through without obstruction. The base is provided with an openable cover, which forms a sealed cavity with the base.

[0007] Preferably, a vertically arranged linear guide rail is installed on the base, and a linear driver is installed on the linear guide rail. The output shaft of the linear driver is connected to a sliding seat, and the cover is installed on the sliding seat. The linear driver can be a lead screw module driven by an electric cylinder or a servo motor. When the cover needs to be opened or closed, the linear driver drives the sliding seat to move smoothly along the linear guide rail, thereby driving the cover to complete the precise opening and closing.

[0008] Preferably, a filler is provided in the optical path area to fill the space other than the first airbag. The filler has a through-hole airbag cavity opened along the optical axis, and the first airbag is installed in the airbag cavity.

[0009] Preferably, the filler has an installation cavity inside for housing the second airbag and the gas transfer mechanism.

[0010] Preferably, the pressing member includes a guide hole provided on the filler and extending into the mounting cavity, a guide rod fixed on the cover, and a second elastic member extending into the guide hole at its bottom. When the guide rod extends into the guide hole to press the second elastic member, the bottom of the second airbag moves away from the top, and the first elastic member undergoes tensile deformation.

[0011] Preferably, the second elastic element includes a sealing slider whose outer diameter is adapted to the inner diameter of the guide hole. The lower side of the sealing slider is connected to an outer sleeve extending along the guide hole. An inner sleeve is embedded in the outer sleeve. A helical spring is provided inside the outer sleeve and the inner sleeve. The two ends of the helical spring are fixedly connected to the outer sleeve and the inner sleeve, respectively. The bottom of the inner sleeve is connected to a first distribution plate.

[0012] Preferably, the bottom of the second airbag is provided with a first uniform distribution plate and the top is provided with a second uniform distribution plate. The two ends of the first elastic member are respectively connected to the first uniform distribution plate and the second uniform distribution plate, and the end of the second elastic member facing the second airbag is connected to the first uniform distribution plate to ensure that the holding force is evenly distributed on the entire top surface of the second airbag.

[0013] Preferably, the first airbag is an elongated structure whose shape is adapted to the airbag cavity, and a third elastic element is provided between the top and bottom of the first airbag so that when the gas inside the first airbag is transferred, its body undergoes controllable vertical deformation.

[0014] Preferably, a self-locking mechanism is provided between the first airbag and the second airbag. The self-locking mechanism includes a first reversing valve, a second reversing valve, and a one-way valve. The first port of the first reversing valve is connected to the first airbag, the second port is connected to the first end of the one-way valve, and the third port is connected to the second end of the one-way valve. The first port of the second reversing valve is connected to the second airbag, the second port is connected to the second end of the one-way valve, and the third port is connected to the first end of the one-way valve. The one-way valve is a one-way connection from the first end to the second end.

[0015] Preferably, the switching ends of the first and second reversing valves penetrate through the side wall of the filler, and their valve core axes are perpendicular to the surface of the filler, so that when the cover seals the base, the cover presses the switching end, triggering the valve core displacement, thereby realizing the state switching of the air passage connection direction.

[0016] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0017] The beneficial effects of this invention are as follows: The first airbag pre-expels air from the optical path, and the detection optical path is sealed by an openable cover. This prevents outside air from entering the optical path after the gas in the first airbag transfers to the second airbag, avoiding the violent airflow disturbance caused by traditional blowing cleaning methods. While effectively cleaning suspended dust on the detection optical path, it also ensures the stability of the detection light propagation environment, thereby improving the accuracy of the detection signal and meeting the high-precision detection requirements in the lens processing process.

[0018] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more easily understood, specific embodiments of the present invention are described below. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the cover, i.e., the opening and closing mechanism, according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure after removing the cover, according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure after removing the cover and filler elements according to an embodiment of the present invention. Figure 5 This is a schematic diagram of the structure of the filler and the first airbag provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the internal structure of the filler provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of a filler provided in an embodiment of the present invention; Figure 8 This is a schematic diagram showing the connection between the first airbag and the second airbag according to an embodiment of the present invention. Figure 9 This is a schematic diagram of the internal structure of the first directional valve provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the second elastic member provided in an embodiment of the present invention; Figure 11 This is one of the schematic diagrams of the internal structure of the first airbag provided in an embodiment of the present invention; Figure 12 This is a second schematic diagram of the internal structure of the first airbag provided in an embodiment of the present invention.

[0020] Figure label: 1. Cover; 2. Base; 3. Linear actuator; 4. Linear guide rail; 5. Limit seat; 6. Guide rod; 7. Sliding seat; 8. Filler; 9. Guide hole; 10. Switching end; 11. Lens; 12. Transmitter; 13. Side sealing plate; 14. Support seat; 15. Receiver; 16. First airbag; 17. Second elastic element; 18. First distribution plate; 19. Second distribution plate; 20. Mounting cavity; 21. Airbag cavity ; 22. Second airbag; 23. First reversing valve; 24. Second reversing valve; 25. Check valve; 26. First interface; 27. Third interface; 28. Second interface; 29. ​​Valve core; 30. Second step; 31. First step; 32. Fourth elastic element; 33. Switching chamber; 1601. Mesh elastic rope; 1602. Elastic pull rope; 1701. Sealing slider; 1702. Outer sleeve; 1703. Inner sleeve. Detailed Implementation

[0021] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0026] To better understand the purpose, function, and specific design of this invention, the invention will be described in further detail below with reference to the accompanying drawings.

[0027] like Figure 1 - Figure 12 As shown, the present invention provides an optical lens inspection device, including a base 2, on which a transmitter 12, a support 14, and a receiver 15 are installed. A lens 11 is placed on the support 14. A first airbag 16 is provided between the transmitter 12 and the lens 11 and between the lens 11 and the receiver 15, for filling the optical path space and venting air. The first airbag 16 is connected to the second airbag 22 through a pipe to form a closed air passage. The second airbag 22 is equipped with a gas transfer mechanism, which includes a holding member and a first elastic member. The second airbag 22 is an accordion-type airbag. When the holding member is driven by an external force, the holding member pushes the bottom of the second airbag 22 away from its top, causing the second airbag 22 to expand and extract the gas from the first airbag 16. The first elastic member is installed between the top and bottom of the second airbag 22. The first elastic member drives the second airbag 22 to reset after the holding member is removed, realizing gas return. When the first airbag 16 expands, it fills the optical path space, expels air, and blocks the dust channel. When the first airbag 16 contracts, it makes way for the optical path, allowing the beam of light to pass through without obstruction. The base 2 is provided with an openable cover 1, and the cover 1 and the base 2 form a sealed cavity.

[0028] The aforementioned base 2 serves as the basic structure for supporting and fixing the various components of the device, ensuring the stability of the entire detection device and the relative positional accuracy of each component. The base 2 is equipped with a transmitter 12, a support base 14, and a receiver 15. The transmitter 12 and receiver 15 are fixed at both ends of the base 2, and the support base 14 is provided in the middle to accurately position the lens 11. A first airbag 16 is provided in the optical path between the transmitter 12 and the lens 11, and a second first airbag 16 is provided in the optical path between the lens 11 and the receiver 15. The first airbag 16 can be filled by inflating the optical path space between the transmitter 12 and the lens 11 and the optical path space between the lens 11 and the receiver 15. When the cover 1 and the base 2 are closed, they form a sealed cavity. Except for the transmitter 12, the support base 14, the receiver 15, and the lens 11, the other spaces are filled by the first airbag 16, thus eliminating air in the optical path. The second airbag 22 can be placed outside the sealed cavity or together inside the sealed cavity. The first airbag 16 is connected to the second airbag 22 through a pipeline. Therefore, the gas in the first airbag 16 can be transferred to the second airbag 22, and the gas in the second airbag 22 can also be transferred back to the first airbag 16, realizing bidirectional dynamic adjustment. The second airbag 22 is equipped with a gas transfer mechanism, which can drive the gas to flow directionally between the two airbags. During the detection process, the gas in the first airbag 16 is accurately transferred to the second airbag 22, so that the first airbag 16 fully contracts and restores the light path transparency, while the second airbag 22 expands synchronously to maintain the system air pressure balance. After the detection is completed, the gas in the second airbag 22 can be returned to the first airbag 16, so that it is re-inflated and fills the light path space, ensuring the consistency of the environment before the next detection. The base 2 is provided with an openable cover 1 to seal the transmitter 12, lens 11, receiver 15 and first airbag 16. After the cover 1 is closed, it forms a sealed cavity, which effectively isolates external airflow disturbances and ensures that no external gas will seep into the optical path area after the first airbag 16 is compressed, thus ensuring the absolute stability of the beam propagation path during the detection process.

[0029] In this embodiment, the air in the optical path is vented out in advance by the first airbag 16, and the detection optical path is sealed by the openable cover 1 to prevent outside air from entering after the gas in the first airbag 16 is transferred to the second airbag 22. Then, the air in the first airbag 16 is transferred to the second airbag 22. At this time, the optical path that was originally filled by the first airbag 16 is restored to unobstructed, and the light beam can propagate along the optical path. This avoids the violent airflow disturbance caused by the traditional blowing cleaning method. While effectively cleaning the suspended dust in the detection optical path, it ensures the stability of the detection light propagation environment, thereby improving the accuracy of the detection signal and meeting the high-precision detection requirements in the lens 11 processing process.

[0030] Furthermore, in this embodiment, the support base 14 has an arc-shaped top surface that matches the curvature of the lens 11. This arc-shaped top surface can closely fit the bottom contour of the lens 11. Since there are first airbags 16 on both sides, it can form a symmetrical clamp on both sides of the lens 11, ensuring that the lens 11 does not have any slight displacement or tilt during the detection process, thereby accurately positioning the lens 11 at the center of the optical axis.

[0031] Furthermore, in this embodiment, the base 2 has two side sealing plates 13 at both ends. When the cover 1 and the base 2 are closed, the side sealing plates 13 and the support seat 14 are tightly fitted to the cover 1 on the side facing the cover 1, so that the cover 1 can form a sealed cavity with the base 2 and the side sealing plates 13.

[0032] In addition, when the lens 11 is placed on the support 14 and the top outline of the lens 11 is not consistent with the inside of the cover 1, a limiting seat 5 is installed on the inside of the cover 1. The limiting seat 5 fills the upper space of the lens 11, which can improve the stability of the lens 11 during detection and also expel the air in the process of closing the cover 1.

[0033] Furthermore, a vertically arranged linear guide rail 4 is installed on the base 2, and a linear driver 3 is installed on the linear guide rail 4. The output shaft of the linear driver 3 is connected to a sliding seat 7, and the cover 1 is installed on the sliding seat 7. The linear driver 3 can be a lead screw module driven by an electric cylinder or a servo motor. When the cover 1 needs to be opened or closed, the linear driver 3 drives the sliding seat 7 to move smoothly along the linear guide rail 4, thereby driving the cover 1 to complete the precise opening and closing.

[0034] In some embodiments, a filler 8 is provided in the optical path area to fill other spaces except for the first airbag 16. The filler 8 has a through airbag cavity 21 along the optical axis, and the first airbag 16 is installed in the airbag cavity 21.

[0035] The filler 8 is a structural component designed to fill the space inside the housing 1, excluding the optical path, and to provide support and isolation for the internal components. This reduces the volume of gas that the first airbag 16 needs to transfer, thereby reducing the driving force required for airbag deformation. The outer contour of the filler 8 precisely matches the shape inside the housing 1, allowing the outer side of the filler 8 to fit tightly against the inner side of the housing 1. This fit can be achieved through precision machining, or by using a sealing gasket or a slight interference fit between the two to ensure a tight physical barrier, effectively preventing external light or air from entering the detection area and reducing the movement of internal components. For example, elastic pads can be placed at both ends and on the outer side of the filler 8 to further improve the stability and sealing of the overall structure.

[0036] The bottom of the filler 8 can be fixedly connected to the base 2.

[0037] The aforementioned airbag cavity 21 is a space for accommodating the first airbag 16, and the space is arranged to run through the optical path to ensure that after the first airbag 16 is compressed, the space can allow the beam emitted by the transmitter 12 to pass through without obstruction.

[0038] Specifically, in this embodiment, the filler 8 is an arched structure, and the length of the filler 8 is adapted to the length of the optical path. The two ends of the filler 8 in the interval between the transmitter 12 and the support 14 are respectively tightly attached to the opposite sides of the transmitter 12 and the support 14. The two ends of the filler 8 in the interval between the support 14 and the receiver 15 are respectively tightly attached to the opposite sides of the support 14 and the receiver 15. The cross-sectional shape of the air bladder cavity 21 is a vertical elongated structure perpendicular to the optical axis, and the top is arc-shaped, so that the first air bladder 16 can be smoothly contracted in the vertical direction without interfering with the optical path.

[0039] In some embodiments, the filling member 8 has an installation cavity 20 inside for housing the second airbag 22 and the gas transfer mechanism.

[0040] Specifically, in this embodiment, the second airbag 22 is placed and fixed in the pre-reserved mounting cavity 20 inside the filler 8. Installing the second airbag 22 inside the filler 8 not only provides physical protection but also makes it more integrated with the overall structure of the device, which helps to achieve a compact design of the device and further improves the sealing performance of the overall structure.

[0041] In some embodiments, the pressing member includes a guide hole 9 disposed on the filler 8 and extending into the mounting cavity 20, a guide rod 6 fixed on the cover 1, and a second elastic member 17 extending into the guide hole 9 installed at its bottom. When the guide rod 6 extends into the guide hole 9 to press the second elastic member 17, the bottom of the second airbag 22 moves away from the top, and the first elastic member undergoes tensile deformation.

[0042] The aforementioned guide hole 9 vertically connects the mounting cavity 20 of the filler 8 to the outside. When the cover 1 and the base 2 are vertically closed, the guide rod 6 extends into the guide hole 9. The guide hole 9 and the guide rod 6 cooperate to guide the movement. On the other hand, the guide rod 6 presses the second elastic element 17, causing the second elastic element 17 to compress. The elastic force of the second elastic element 17 presses the bottom of the second airbag 22, causing the bottom of the second airbag 22 to move away from the top, thereby causing the second airbag 22 to expand and draw air from the first airbag 16, achieving rapid compression of the first airbag 16 and ensuring unobstructed optical path. When the cover 1 and the base 2 are separated, the guide rod 6 exits the guide hole 9. During the process of the second elastic element 17 recovering its deformation, the elastic pressing force on the bottom of the second airbag 22 is gradually removed. The first elastic element recovers synchronously, pulling the bottom of the second airbag 22 gradually closer to the top, causing the second airbag 22 to contract and reset from the expanded state, thereby inflating the gas in the second airbag 22 into the first airbag 16. The first airbag 16 then returns to its original shape and refills the optical path gap.

[0043] In this embodiment, the automatic transfer of gas between the first airbag 16 and the second airbag 22 is achieved by the actions of closing and separating the cover 1, without the need for external energy intervention. The entire process relies entirely on the linkage of the mechanical structure.

[0044] Furthermore, in this embodiment, the first elastic element is a helical spring (not shown in the figure) installed inside the second airbag 22. One end of the spring is connected to the bottom of the second airbag 22, and the other end is connected to the top of the second airbag 22. When the bottom of the second airbag 22 is expanded downward by the force of the second elastic element 17, the helical spring is stretched and charged. When the external force on the bottom of the second airbag 22 is removed, the second elastic element 17 gradually resets and pulls the bottom of the second airbag 22 to contract and reset towards the top of the second airbag 22.

[0045] The second elastic element 17 includes a sealing slider 1701 whose outer diameter is adapted to the inner diameter of the guide hole 9. The lower side of the sealing slider 1701 is connected to an outer sleeve 1702 extending along the guide hole 9. An inner sleeve 1703 is embedded within the outer sleeve 1702. A helical spring is installed inside both the outer sleeve 1702 and the inner sleeve 1703, with both ends of the helical spring fixedly connected to the outer sleeve 1702 and the inner sleeve 1703, respectively. The bottom of the inner sleeve 1703 is connected to a first distribution plate 18. The sealing slider 1701 can slide vertically along the guide hole 9, providing a sliding seal to the guide hole 9, thus preventing communication between the internal and external spaces of the filler 8.

[0046] In some embodiments, the bottom of the second airbag 22 is provided with a first distribution plate 18 and the top is provided with a second distribution plate 19. The two ends of the first elastic member are respectively connected to the first distribution plate 18 and the second distribution plate 19, and the end of the second elastic member 17 facing the second airbag 22 is connected to the first distribution plate 18 to ensure that the holding force is evenly distributed on the entire top surface of the second airbag 22.

[0047] Specifically, in this embodiment, the bottom of the first elastic member is fixedly connected to the first distribution plate 18, and the top is fixedly connected to the second distribution plate 19, so that when the first distribution plate 18 and the second distribution plate 19 approach each other, the first elastic member is compressed, and when the first distribution plate 18 and the second distribution plate 19 move away from each other, the first elastic member is stretched. The bottom of the second elastic member 17 is connected to the first distribution plate 18, and the top of the second elastic member 17 extends into the guide hole 9. When the second elastic member 17 applies a force to the first distribution plate 18, the force is evenly distributed to the bottom of the second airbag 22, causing the bottom of the second airbag 22 to move away from the top, thereby causing the second airbag 22 to expand. When the force of the second elastic member 17 is removed, the second distribution plate 19 is reset under the force of the first elastic member.

[0048] Furthermore, the first distribution plate 18 at the bottom of the second airbag 22 extends out at both ends, so that the second elastic member 17 connecting the two ends is arranged to avoid the airbag body in the vertical direction.

[0049] The size and shape of the distribution plate are usually designed according to the geometric features of the top and bottom of the second airbag 22 to ensure that it can completely cover or at least effectively cover the stress area of ​​the second airbag 22. In this embodiment, the second airbag 22 is a rectangular accordion structure and the distribution plate is a rectangular thin plate.

[0050] In some embodiments, the first airbag 16 is an elongated structure whose shape is adapted to the airbag cavity 21, and a third elastic member is provided between the top and bottom of the first airbag 16 so that when the gas in the first airbag 16 is transferred, its body undergoes controllable vertical deformation.

[0051] Furthermore, the optical axis is located on the upper part of the first airbag 16, so that after the first airbag 16 retracts vertically downwards, it can make room for the optical axis to pass through, ensuring that the optical path passes through stably.

[0052] The third elastic element is an elastic action element that, through its elastic properties, constrains and guides the deformation of the first airbag 16, ensuring the stability and predictability of its deformation process. The third elastic element is disposed between the top and bottom of the first airbag 16 so that its elastic force acts on the top of the first airbag 16. When the first airbag 16 contracts or expands, a downward force is applied to the top of the first airbag 16 in the vertical direction, so that the side of the first airbag 16 fits tightly against the airbag cavity 21, while the top gradually contracts or expands, thereby enabling controllable deformation.

[0053] In some embodiments, the third elastic element is a mesh elastic rope 1601 uniformly distributed on the top side of the first airbag 16.

[0054] Specifically, the third elastic element is designed as a mesh elastic rope 1601. Compared to a single elastic band or spring, the mesh structure can provide a more uniform and distributed restraint force. The mesh elastic rope 1601 is evenly distributed on the top side of the first airbag 16, so that when the first airbag 16 is inflated or deflated, the mesh elastic rope 1601 can restrain the top and sides of the first airbag 16.

[0055] The mesh elastic rope 1601 can effectively limit the local excessive expansion or contraction of its bladder, ensuring that the deformation process of the first air bladder 16 along the vertical direction is more stable, controllable and uniform.

[0056] In some embodiments, the third elastic element is an elastic pull cord 1602 connecting the top and bottom of the first airbag 16.

[0057] Specifically, when the gas in the second airbag 22 is transferred into the first airbag 16, the top and bottom of the first airbag 16 separate. At this time, the third elastic element is stretched and provides constraint on the top, so that the top of the first airbag 16 moves steadily upward, allowing the side of the first airbag 16 to fit smoothly against the side wall of the airbag cavity 21. When the first airbag 16 transfers gas, for example, when the internal gas is extracted and causes it to contract, the originally stretched elastic cord 1602 will provide a downward pulling force, thereby guiding the top of the first airbag 16 to move smoothly downward in the vertical direction; making the deformation path of the first airbag 16 clearer and more stable.

[0058] In some embodiments, a self-locking mechanism is provided between the first airbag 16 and the second airbag 22. The self-locking mechanism includes a first reversing valve 23, a second reversing valve 24, and a one-way valve 25. The first port 26 of the first reversing valve 23 is connected to the first airbag 16, the second port 28 is connected to the first end of the one-way valve 25, and the third port 27 is connected to the second end of the one-way valve 25. The first port 26 of the second reversing valve 24 is connected to the second airbag 22, the second port 28 is connected to the second end of the one-way valve 25, and the third port 27 is connected to the first end of the one-way valve 25. The one-way valve 25 is a one-way connection from the first end to the second end.

[0059] By setting a self-locking mechanism, when the cover 1 and the base 2 are separated, the second airbag 22 flows unidirectionally to the first airbag 16. That is, air can only flow from the second airbag 22 to the first airbag 16, so that the first airbag 16 is in an inflated state, thereby filling the light path and squeezing out the air in the light path. Specifically, at this time, the first port 26 of the first reversing valve 23 is connected to the third port 27, the third port 27 of the first reversing valve 23 is connected to the second end of the one-way valve 25, the first port 26 of the second reversing valve 24 is connected to the third port 27, and the third port 27 of the second reversing valve 24 is connected to the first end of the one-way valve 25. Therefore, the gas in the second airbag 22 can enter the third port 27 from the first port 26, pass through the first end and the second end of the one-way valve 25, and then flow into the third port 27 and the first port 26 of the first reversing valve 23, and finally flow into the first airbag 16.

[0060] When the cover 1 and the base 2 are closed, the first reversing valve 23 and the second reversing valve 24 switch synchronously, so that the first airbag 16 can flow to the second airbag 22 in one direction. That is, air can only flow from the first airbag 16 to the second airbag 22, so that the first airbag 16 is in a contracted state, thereby making way for the light beam to pass through.

[0061] Specifically, at this time, since the first reversing valve 23 and the second reversing valve 24 switch synchronously, that is, the first port 26 of the first reversing valve 23 is connected to the second port 28, and the first port 26 of the second reversing valve 24 is connected to the second port 28, and the first airbag 16 is in an inflated state, the gas in the first airbag 16 flows from the first port 26 of the first reversing valve 23 through the second port 28 into the one-way valve 25, and the air flows from the first end and the second end of the one-way valve 25 into the second port 28 of the second reversing valve 24, and the gas in the second reversing valve 24 enters the second airbag 22 through the first port 26.

[0062] The aforementioned self-locking mechanism ensures that the airbag system maintains a stable shape before sealing is completed, preventing the first airbag 16 from contracting prematurely due to early connection, which would allow gas to enter the optical path and affect the optical detection accuracy.

[0063] In this embodiment, the internal structures of the first reversing valve 23 and the second reversing valve 24 are identical, both including a first interface 26, a second interface 28, and a third interface 27. All three interfaces are connected to the switching chamber 33, which is a cylindrical cavity. A valve core 29 is disposed within the switching chamber 33. The valve core 29 is a cylindrical rod with a diameter smaller than the inner diameter of the switching chamber 33 to form a fluid channel. Furthermore, the valve core 29 has a first step 31 and a second step 30, both of which are cylinders coaxial with the valve core 29. The outer diameters of the first step 31 and the second step 30 are adapted to the inner diameter of the switching chamber 33. The first step 31 is located at the inner end of the valve core 29. A fourth elastic element 32, which is a helical spring, is provided between the inner end of the valve core 29 and the bottom wall of the switching chamber 33. One end extends out of the valve body as the switching end 10. A limit ring is provided at the end of the switching cavity 33 near the switching end 10 to prevent the valve core 29 from coming out of the switching cavity 33. When the valve core 29 is not subjected to external force, the valve core 29 presses against the limit ring under the action of the spring force. At this time, the first step 31 blocks the third interface 27. The ports of the first interface 26 and the second interface 28 that connect to the switching cavity 33 are located between the first step 31 and the second step 30, so that the first interface 26 and the second interface 28 are connected. When the valve core 29 is pressed, the second step 30 moves along the switching cavity 33 toward the first step 31, so that the second step 30 blocks the second interface 28. The ports of the first interface 26 and the third interface 27 that connect to the switching cavity 33 are located between the first step 31 and the second step 30. At this time, the first interface 26 and the second interface 28 are connected.

[0064] In some embodiments, the switching ends 10 of the first reversing valve 23 and the second reversing valve 24 penetrate through the side wall of the filler 8, and the axis of their valve core 29 is perpendicular to the surface of the filler 8, so that when the cover 1 seals the base 2, the cover 1 presses the switching end 10, triggering the valve core 29 to move, thereby realizing the state switching of the air passage connection direction.

[0065] The above structure enables the closing and opening of the cover 1 to simultaneously trigger the state switching of the air path connection direction, achieving automatic switching of the air path logic without additional control signals, which greatly simplifies the system structure and operation process.

[0066] In some embodiments, a sealing ring is provided between the cover 1 and the base 2, and the sealing ring is arranged around the filler 8 to enhance the sealing effect.

[0067] The sealing ring is placed on the contact surface between the cover 1 and the base 2. When the cover 1 is closed, the sealing ring is compressed and fills the tiny gap between the two through its own elastic deformation, thereby forming an airtight barrier.

[0068] In some embodiments, the transmitter 12 is a laser transmitter 12 or an LED light source; the receiver 15 is a photoelectric sensor or a CCD camera.

[0069] The transmitter 12 is a laser transmitter 12 or an LED light source, used to emit a parallel detection beam (usually visible or infrared light) that is incident along the optical axis of the lens 11. The receiver 15 is a photoelectric sensor or a CCD camera, used to accurately receive the transmitted light after passing through the lens 11 and convert the light intensity into an electrical signal for analysis. The transmitter 12 emits a stable and collimated detection beam that penetrates vertically through the center of the lens 11 under test. The receiver 15 receives the light after refraction and transmission through the lens 11 and measures parameters such as light intensity, spot shape, and deflection angle.

[0070] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An optical lens inspection device, characterized in that, The device includes a base on which a transmitter, a support, and a receiver are mounted. A lens is placed on the support. A first airbag is provided between the transmitter and the lens, and between the lens and the receiver, to fill the optical path space and expel air. The first airbag is connected to the second airbag through a pipe to form a closed air passage. The second airbag is equipped with a gas transfer mechanism, which includes a holding member and a first elastic member. The second airbag is an accordion-type airbag. When the holding member is driven by an external force, the holding member pushes the bottom of the second airbag away from its top, causing the second airbag to expand and draw gas from the first airbag. The first elastic member is installed between the top and bottom of the second airbag. The first elastic member drives the second airbag to reset after the holding member is removed, realizing gas return. When the first airbag inflates, it fills the space of the light path, expels air, and blocks the dust channel. When the first airbag contracts, it makes way for the light path, allowing the light beam to pass through without obstruction. The base is provided with an openable cover, which forms a sealed cavity with the base.

2. The optical lens inspection device according to claim 1, characterized in that, A vertically arranged linear guide rail is installed on the base, and a linear driver is installed on the linear guide rail. The output shaft of the linear driver is connected to a sliding seat, and the cover is installed on the sliding seat. The linear driver can be a lead screw module driven by an electric cylinder or a servo motor. When the cover needs to be opened or closed, the linear driver drives the sliding seat to move smoothly along the linear guide rail, thereby driving the cover to complete the precise opening and closing.

3. The optical lens inspection device according to claim 1, characterized in that, A filler is provided in the optical path area to fill the space other than the first airbag. An airbag cavity is provided inside the filler along the optical axis, and the first airbag is installed in the airbag cavity.

4. The optical lens inspection device according to claim 3, characterized in that, The filling component has an installation cavity inside, which is used to house the second airbag and the gas transfer mechanism.

5. The optical lens inspection device according to claim 4, characterized in that, The holding member includes a guide hole provided on the filler and extending into the mounting cavity, a guide rod fixed on the cover, and a second elastic member extending into the guide hole at its bottom. When the guide rod extends into the guide hole to hold the second elastic member, the bottom of the second airbag moves away from the top, and the first elastic member undergoes tensile deformation.

6. The optical lens inspection device according to claim 5, characterized in that, The second elastic element includes a sealing slider whose outer diameter is adapted to the inner diameter of the guide hole. The lower side of the sealing slider is connected to an outer sleeve extending along the guide hole. An inner sleeve is embedded in the outer sleeve. A helical spring is installed inside the outer sleeve and the inner sleeve. The two ends of the helical spring are fixedly connected to the outer sleeve and the inner sleeve, respectively. The bottom of the inner sleeve is connected to the first distribution plate.

7. The optical lens inspection device according to claim 6, characterized in that, The bottom of the second airbag is provided with a first uniform distribution plate and the top is provided with a second uniform distribution plate. The two ends of the first elastic member are respectively connected to the first uniform distribution plate and the second uniform distribution plate. The end of the second elastic member facing the second airbag is connected to the first uniform distribution plate to ensure that the holding force is evenly distributed on the entire top surface of the second airbag.

8. The optical lens inspection device according to claim 1, characterized in that, The first airbag is a long strip structure whose shape is adapted to the airbag cavity. A third elastic element is provided between the top and bottom of the first airbag so that when the gas inside the first airbag is transferred, its body undergoes controllable vertical deformation.

9. An optical lens inspection device according to any one of claims 1-8, characterized in that, A self-locking mechanism is provided between the first airbag and the second airbag. The self-locking mechanism includes a first reversing valve, a second reversing valve, and a one-way valve. The first port of the first reversing valve is connected to the first airbag, the second port is connected to the first end of the one-way valve, and the third port is connected to the second end of the one-way valve. The first port of the second reversing valve is connected to the second airbag, the second port is connected to the second end of the one-way valve, and the third port is connected to the first end of the one-way valve. The one-way valve is a one-way connection from the first end to the second end.

10. An optical lens inspection device according to claim 9, characterized in that, The switching ends of the first and second reversing valves penetrate through the side wall of the filler, and their valve core axes are perpendicular to the surface of the filler, so that when the cover seals the base, the cover presses the switching end, triggering the valve core displacement, thereby realizing the state switching of the air passage connection direction.

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