Quick-release VND + CPL filter for camera

Abstract

The utility model relates to a camera quick release VND + CPL filter, which comprises an adapter ring, a lower ring and an upper ring, the top of the adapter ring is provided with a first annular clamping groove, the lower ring is provided with a first quick release assembly, the adapter ring and the lower ring are quickly disassembled and assembled through the first quick release assembly, the upper ring and the lower ring are clamped and rotationally connected, a first CPL lens is fixed in the lower ring, a second CPL lens is fixed in the upper ring, and the first CPL lens and the second CPL lens are fixed in the adapter ring. The two CPL lenses are overlapped and combined to form a VND filter, the two CPL lenses with the angles adjusted rotate synchronously to achieve the function of the CPL filter, a third annular clamping groove is formed in the top of the upper ring, and the third annular clamping groove can be clamped and rotationally connected with other functional filter assemblies and a lens cover assembly. The functional filter assembly and the lens cover assembly are respectively provided with a second quick-release assembly and a third quick-release assembly, and through cooperation of the first quick-release assembly, the second quick-release assembly and the third quick-release assembly, quick disassembly and free combination use of the adapter ring, the VND + CPL filter, the functional filter assembly and the lens cover assembly can be realized.

Description

Technical Field

[0001] This utility model relates to the field of camera accessory technology, and in particular to a camera quick-release VND+CPL filter. Background Technology

[0002] Most camera filters on the market can only be used individually. They are connected by threads on the bottom of the filter, which is slow to install. After stacking, the overall thickness of the filter becomes thicker and heavier, resulting in vignetting, which causes great inconvenience to users. In addition, they lack features such as NFC recognition chips and white balance calibration stickers, making their functions relatively limited. Utility Model Content

[0003] Based on this, and to overcome the shortcomings of existing technologies, this utility model provides a quick-release VND+CPL filter for cameras. The camera can quickly install and remove filters during use. The quick-release assembly enables rapid installation and removal of VND+CPL filters, other functional filters, lens caps, and adapter rings. The components can be used stacked or individually. Multiple adjustable optical effects and quick-release design improve the photographer's operational efficiency. The built-in NFC identification chip and white balance calibration sticker can identify product information and help the camera accurately reproduce colors, improving equipment management and the photographer's operational efficiency.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a camera quick-release VND+CPL filter is provided, including an adapter ring. The bottom of the adapter ring is provided with an external thread for connecting the camera lens. The inner wall of the top of the adapter ring is provided with a first annular groove. The upper end of the adapter ring is provided with a lower ring. The lower ring is fixedly connected to a first CPL lens. The bottom sides of the lower ring are symmetrically provided with first mounting grooves. The first mounting grooves are provided with first quick-release components. The top of the lower ring is provided with a first arc-shaped sliding groove. The inner wall of the top of the lower ring is provided with a second annular groove. The upper end of the lower ring is snapped and rotatably connected to an upper ring. The outer wall of the bottom of the upper ring is provided with an annular buckle. The annular buckle is snapped and rotatably engaged with the second annular groove. In order to ensure stable connection, the annular buckle can adopt an inverted buckle structure. The upper ring is fixedly connected to a second CPL lens. The bottom of the upper ring is provided with a first slider. The first slider is placed in the first arc-shaped sliding groove and can slide relative to the trajectory of the first arc-shaped sliding groove.

[0005] A VND filter is composed of two stacked CPL filters. In this design, it consists of a first CPL lens and a second CPL lens, one of which is fixed while the other is rotatable. Rotating the adjustable filter changes the relative polarization angle between the two CPL lenses. In this design, the first CPL lens can be manually fixed while the second CPL lens is rotated, thus affecting the amount of light passing through the filter. The larger the rotation angle, the less light passes through, thereby reducing exposure and achieving the effect of an ND filter. The rotating structure design allows for flexible adjustment of the amount of light passing through, offering greater flexibility than traditional fixed ND filters.

[0006] A CPL filter can reduce reflected light or increase color saturation by rotating it, controlling the amount of light passing through by polarizing light. When a polarizing filter rotates, it creates varying degrees of polarization, thus altering the amount of light passing through the filter. Once the angle of the VND filter is adjusted, while keeping the VND angle constant, adjusting the angle of the VND filter can reduce reflected light or increase color saturation, thus also functioning as a CPL filter. In this solution, after fixing the angles of the first and second CPL lenses, the lower and upper rings are rotated synchronously to drive the first and second CPL lenses to rotate synchronously, achieving the CPL filter adjustment function.

[0007] The first quick-release assembly includes a hand pressure plate, a first spring, and a first pressure plate. A first stop is provided in the first assembly groove. A limiting hole is provided on the hand pressure plate. The first stop is placed in one side of the limiting hole. The first spring is placed in the limiting hole, with one end of the first spring abutting against the first stop and the other end abutting against the limiting hole on the other side away from the first stop. A first snap-fit ​​plate is provided at the bottom of the hand pressure plate. The first snap-fit ​​plate engages and rotates with the first annular slot. The first pressure plate is fixed to the first assembly groove by screws to limit the hand pressure plate and form a displacement cavity for the hand pressure plate.

[0008] In use, the first quick-release assembly is engaged with the adapter ring. When disassembly is required, the first snap-fit ​​plate moves downwards towards the axis by manually pushing the hand pressure plate. The first snap-fit ​​plate compresses the first spring on the wall of the limiting hole, and the first snap-fit ​​plate disengages from the first annular slot, thus enabling quick disassembly of the filter and the adapter ring. After the force applied to the hand pressure plate is released, the hand pressure plate automatically resets under the restoring force of the compressed first spring.

[0009] Preferably, a rotating lever is provided on the outer side of the upper ring to facilitate the rotation and adjustment of the upper ring. At the same time, the first quick-release component can also be used as an adjustment block for the lower ring to facilitate the rotation and adjustment of the lower ring.

[0010] Preferably, a rear lens cover is fitted onto the inner wall of the top of the adapter ring, and protrusions are arranged in an evenly spaced ring on the outer wall of the bottom of the rear lens cover. A white balance calibration sticker is pasted and fixed on the top of the rear lens cover.

[0011] When filters are not needed, the adapter ring can be stored on the rear lens cap. A protrusion on the bottom of the rear lens cap increases connection stability. The first quick-release assembly can then snap onto the inner top wall of the rear lens cap, thus protecting the bottom of the filter. Additionally, when using the camera, white balance calibration can be performed using a white balance calibration sticker. Specifically, place the rear lens cap an arm's length away from the lens, with the white balance calibration sticker facing the lens. Then, the camera will sample and measure the color. The white balance can be set to a custom option, displayed as a small square. This small square can be used for white or gray. Setting the camera to manual focus mode for sampling will yield more accurate results. Take an image of the ambient light source, use this white balance data to customize the white balance, recompose the shot, and take the picture.

[0012] Preferably, the VND+CPL filter can be used with other functional filter components. The upper ring is connected to the functional filter component by a snap-fit ​​and rotatable mechanism. The functional filter component includes a frame, and a functional filter is fixed inside the frame. The functional filter can be a UV filter, a graduated filter, a soft focus filter, a starburst filter, or other filters with different effects. A second quick-release component is symmetrically provided at the bottom of the frame. The second quick-release component includes a button, a second pressure plate, and a second spring. A first spring groove is provided on the bottom wall of the frame, and the second spring is placed in the first spring groove. A second slider is provided on the top of the button, and the second slider is also placed in the first spring groove. One end of the second spring abuts against the inner wall of one side of the first spring groove, and the other end abuts against the wall of the second slider. A limiting plate is provided on the outside of the button. The second pressure plate is fixed to the bottom of the frame by screws to limit the limiting plate and form a displacement cavity for the limiting plate. A second snap-fit ​​plate is also provided at the bottom of the button. A third annular snap-fit ​​groove is provided on the inner wall of the top of the upper ring. The second snap-fit ​​plate and the third annular snap-fit ​​groove snap and rotate together.

[0013] Similarly, during disassembly, the second snap-fit ​​plate can be moved towards the center of the lens frame and disengaged from the third annular slot by manually pushing the button. This allows for quick disassembly of the functional filter assembly. The second slider compresses the second spring. After the force on the button is released, the button automatically resets under the restoring force of the compressed second spring.

[0014] Preferably, the top of the upper ring is provided with an arc-shaped slider, and the bottom of the frame is provided with a second arc-shaped groove. The arc-shaped slider is placed in the second arc-shaped groove and can slide relative to the track of the second arc-shaped groove.

[0015] Preferably, the VND+CPL filter can also be used with a lens cap assembly. The upper ring is snap-fitted and rotatably connected to the lens cap assembly, which includes a lens cap. Symmetrically arranged second mounting slots are provided on both sides of the bottom of the lens cap. A third quick-release assembly is located within each of the second mounting slots. The third quick-release assembly includes a handle, a third spring, and a third pressure plate. A second stop is provided within the second mounting slot. A second spring groove is formed at the top of the handle. The third spring is placed within the second spring groove, with one end abutting against the second stop and the other end abutting against the wall of the second spring groove. The three pressure plates are fixed to the second assembly slot by screws to limit the two sides of the handle and form a displacement cavity for the handle. The two sides of the handle are provided with limiting slots. The top of the third pressure plate is provided with a limiting block. The limiting block is placed in the limiting slot and can slide relative to the limiting slot. The bottom of the handle is provided with a third snap-fit ​​plate. The inner wall of the top of the upper ring is provided with a third annular snap-fit ​​groove. The third snap-fit ​​plate and the third annular snap-fit ​​groove are snapped together and rotated. The bottom wall of the lens cover is provided with a third arc-shaped sliding groove. The top of the upper ring is provided with an arc-shaped slider. The arc-shaped slider is placed in the third arc-shaped sliding groove and can slide relative to the trajectory of the third arc-shaped sliding groove.

[0016] The lens cap assembly protects the VND+CPL filter. When the VND+CPL filter needs to be used, the third latching plate can be moved towards the lens cap axis and disengaged from the third annular latching slot by manually pushing the handle. At this time, the lens cap assembly can be quickly disassembled. The wall of the second spring slot compresses the third spring. After the force on the handle is released, the handle will automatically reset under the restoring force of the compressed third spring.

[0017] Preferably, the top of the lens cover has a mounting slot, an NFC identification chip is installed in the mounting slot, and a silicone sticker is fixed on the NFC identification chip.

[0018] NFC identification chips are a crucial component of Near Field Communication (NFC) technology. They integrate the functions of an inductive card reader, an inductive card, and peer-to-peer communication, enabling devices to exchange data when they are close to each other. These chips typically possess communication capabilities and a certain amount of computing power; some products also include encryption logic circuitry and encryption / decryption modules to ensure the security of data transmission.

[0019] In this solution, before the NFC identification chip is installed on the product, product information is entered via a mobile app. When needed, the active device (reader) sends a request to the NFC tag via modulated electromagnetic waves. The passive device (NFC card) responds through load modulation, returning the stored data. Upon receiving the information, the reader parses the unique ID (UID), account information, or other data stored in the NFC tag to identify the product information and improve device management efficiency.

[0020] In addition, the functional filter assembly can also be used with a lens cap assembly. The structure of the lens cap assembly remains unchanged. Specifically, the lens cap assembly is snapped and rotatably connected to the upper end of the lens frame. The lens cap assembly includes a lens cap, and the bottom of the lens cap has symmetrical second mounting slots on both sides. A third quick-release assembly is located in the second mounting slot. The third quick-release assembly includes a handle, a third spring, and a third pressure plate. A second stop is provided in the second mounting slot. A second spring slot is opened on the top of the handle. The third spring is placed in the second spring slot, with one end of the third spring abutting against the second stop and the other end abutting against the wall of the second spring slot. The third pressure plate is fixed to the second spring slot by screws. The mounting groove limits the two sides of the handle and forms a displacement cavity for the handle. The two sides of the handle are provided with limiting grooves. The top of the third pressure plate is provided with a limiting block. The limiting block is placed in the limiting groove and can slide relative to the limiting groove. The bottom of the handle is provided with a third snap-fit ​​plate. The top of the lens frame is provided with an arc-shaped snap-fit ​​groove. The third snap-fit ​​plate and the arc-shaped snap-fit ​​groove are snap-fitted and rotated together. The bottom wall of the lens cap is provided with a third arc-shaped sliding groove. The top of the lens frame is provided with an arc plate. The arc plate is placed in the third arc-shaped sliding groove and can slide relative to the trajectory of the third arc-shaped sliding groove. The top of the lens cap is provided with a mounting groove. The mounting groove is provided with an NFC recognition chip. A silicone sticker is fixed on the NFC recognition chip.

[0021] The beneficial effects of this utility model are:

[0022] Through the use of the first quick-release component, the second quick-release component, and the third quick-release component, the adapter ring, VND+CPL filter, functional filter component, and lens cap component can be quickly installed or removed. Photographers can quickly change filters or accessories for different shooting needs without tedious twisting operations, which greatly improves shooting efficiency.

[0023] Each component can be used independently or stacked freely, making it flexible and adaptable to various shooting scenarios. For example, the VND+CPL filter can be freely stacked with other functional filter components to achieve more adjustable optical effects.

[0024] The device has a built-in NFC identification chip that can store and transmit product information for accessories such as functional filter components, lens cap components, and adapter rings. Photographers or equipment managers can quickly obtain information such as filter parameters and usage records through NFC identification, improving equipment management efficiency and reducing the possibility of misuse.

[0025] Equipped with white balance calibration stickers, it helps the camera perform precise color calibration during shooting, ensuring accurate color reproduction in photos or videos. It is especially suitable for professional photographers seeking precise color control in complex lighting environments, enhancing the quality of their work.

[0026] In addition, this product has a reasonable structural design, a thin and light overall structure, and effectively reduces the occurrence of dark corner effects. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 For the explosion of this utility model Figure 1 ;

[0029] Figure 3 For the explosion of this utility model Figure 2 ;

[0030] Figure 4 This is an exploded view of the first quick-release component in this utility model;

[0031] Figure 5 This is a schematic diagram of the adapter ring and rear lens cover in this utility model;

[0032] Figure 6 This is a schematic diagram of the present invention and its functional filter assembly and lens cap assembly. Figure 1 ;

[0033] Figure 7 This is a schematic diagram of the present invention and its functional filter assembly and lens cap assembly. Figure 2 ;

[0034] Figure 8 This is an exploded view of the functional filter assembly in this utility model;

[0035] Figure 9 This is a schematic diagram of the top structure of the button in this utility model;

[0036] Figure 10 The lens cap assembly of this utility model exploded. Figure 1 ;

[0037] Figure 11 The lens cap assembly of this utility model exploded. Figure 2 ;

[0038] Figure 12 This is a schematic diagram of the top structure of the handle in this utility model.

[0039] in:

[0040] 1. Adapter ring; 11. First annular slot;

[0041] 2. Lower circle;

[0042] 21. First CPL lens; 22. First assembly slot; 221. First stop block;

[0043] 23. First quick-release assembly; 231. Hand pressure plate; 2311. Limiting hole; 2312. First snap-fit ​​plate; 232. First spring; 233. First pressure plate;

[0044] 24. First circular arc groove; 25. Second annular groove;

[0045] 3. Upper ring; 31. Annular buckle; 32. First slider; 33. Rotating lever; 34. Arc slider; 35. Second CPL lens; 36. Third annular slot;

[0046] 4. Rear lens cap; 41. Boss; 42. White balance calibration sticker;

[0047] 5. Functional filter assembly; 51. Frame; 511. Second arc-shaped slide groove; 512. Arc-shaped plate; 513. First spring groove; 514. Arc-shaped slot; 52. Functional filter; 53. Second quick-release assembly; 531. Button; 5311. Limiting plate; 5312. Second snap-fit ​​plate; 5313. Second slider; 532. Second pressure plate; 533. Second spring;

[0048] 6. Lens cap assembly; 61. Lens cap; 611. Second mounting slot; 612. Second stop block; 613. Third arc-shaped sliding groove; 62. NFC identification chip; 63. Silicone sticker; 64. Third quick-release assembly; 641. Handle; 6411. Second spring slot; 6412. Third snap-fit ​​plate; 6413. Limiting slot; 642. Third spring; 643. Third pressure plate; 6431. Limiting block. Detailed Implementation

[0049] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0050] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0052] like Figures 1 to 12As shown, this utility model provides a camera quick-release VND+CPL filter, including an adapter ring 1. The bottom of the adapter ring 1 has an external thread for connecting to a camera lens (not shown in the figure). The inner wall of the top of the adapter ring 1 has a first annular groove 11. The upper end of the adapter ring 1 has a lower ring 2, in which a first CPL lens 21 is fixedly connected. The bottom sides of the lower ring 2 have symmetrical first mounting grooves 22, in which a first quick-release component 23 is disposed. The top of the lower ring 2 has a first arc-shaped sliding groove 24. The lower ring 2 has a second annular groove 25 on the top inner wall. The upper ring 3 is connected to the upper end of the lower ring 2 by locking and rotating. The annular buckle 31 is provided on the bottom outer wall of the upper ring 3. The annular buckle 31 is engaged with the second annular groove 25 and rotates. In order to ensure stable connection, the annular buckle 31 can adopt an inverted buckle structure. The second CPL lens 35 is fixedly connected inside the upper ring 3. The bottom of the upper ring 3 is provided with a first slider 32. The first slider 32 is placed in the first arc groove 24 and can slide relative to the trajectory of the first arc groove 24.

[0053] A VND filter is composed of two stacked CPL filters. In this design, it consists of a first CPL lens 21 and a second CPL lens 35, one of which is fixed while the other is rotatable. Rotating the adjustable filter changes the relative polarization angle between the two CPL lenses. In this design, the first CPL lens 21 can be manually fixed while the second CPL lens 35 is rotated, thus affecting the amount of light passing through the filter. The larger the rotation angle, the less light passes through, thereby reducing exposure and achieving the effect of an ND filter. The rotating structure design allows for flexible adjustment of the amount of light passing through, offering greater flexibility than traditional fixed ND filters.

[0054] A CPL filter can reduce reflected light or increase color saturation by rotating it, controlling the amount of light passing through by polarizing light. When a polarizing filter rotates, it creates varying degrees of polarization, thus altering the amount of light passing through the filter. Once the angle of the VND filter is adjusted, while keeping the VND angle constant, adjusting the angle of the VND filter can reduce reflected light or increase color saturation, thus simultaneously functioning as a CPL filter. In this solution, after the angles of the first CPL lens 21 and the second CPL lens 35 are fixed, the lower ring 2 and the upper ring 3 are rotated synchronously to drive the first CPL lens 21 and the second CPL lens 35 to rotate synchronously, thereby achieving the CPL filter adjustment function.

[0055] The first quick-release assembly 23 includes a hand pressure plate 231, a first spring 232, and a first pressure plate 233. A first stop 221 is provided in the first assembly groove 22. A limiting hole 2311 is provided on the hand pressure plate 231. The first stop 221 is placed in one side of the limiting hole 2311. The first spring 232 is placed in the limiting hole 2311, with one end of the first spring 232 abutting against the first stop 221 and the other end abutting against the other side of the limiting hole 2311 away from the first stop 221. A first snap-fit ​​plate 2312 is provided at the bottom of the hand pressure plate 231. The first snap-fit ​​plate 2312 snaps and rotates with the first annular slot 11. The first pressure plate 233 is fixed to the first assembly groove 22 by screws to limit the hand pressure plate 231 and form a displacement cavity for the hand pressure plate 231.

[0056] In use, the first quick-release assembly 23 can be engaged with the adapter ring 1. When disassembly is required, the first snap-fit ​​plate 231 is manually pushed, and the first snap-fit ​​plate 2312 moves towards the axis of the lower ring 2. The wall of the limiting hole 2311 compresses the first spring 232, and the first snap-fit ​​plate 2312 disengages from the first annular slot 11, thus achieving quick disassembly of the filter and the adapter ring 1. After the force applied to the hand pressure plate 231 is released, the hand pressure plate 231 automatically resets under the restoring force of the compressed first spring 232.

[0057] Furthermore, a rotating lever 33 is provided on the outer side of the upper ring 3 to facilitate the rotational adjustment of the upper ring 3. At the same time, the first quick-release component 23 can also be used as an adjustment block for the lower ring 2 to facilitate the rotational adjustment of the lower ring 2.

[0058] Furthermore, a rear lens cover 4 is fitted onto the inner wall of the top of the adapter ring 1, and protrusions 41 are arranged in an evenly spaced ring on the outer wall of the bottom of the rear lens cover 4. A white balance calibration sticker 42 is pasted and fixed on the top of the rear lens cover 4.

[0059] When filters are not needed, the adapter ring 1 can be fitted onto the rear lens cap 4 for storage. The protrusion 41 on the bottom of the rear lens cap 4 increases connection stability. Then, the first quick-release component 23 can be snapped onto the inner top wall of the rear lens cap 4, thus protecting the bottom of the filter. Furthermore, when using the camera, white balance calibration can be performed using the white balance calibration sticker 42. Specifically, place the rear lens cap 4 an arm's length away from the lens, with the white balance calibration sticker 42 facing the lens. Then, the camera sampling color can set the white balance to a custom option, displayed as a small square. This small square can be used for white or gray. Setting the camera to manual focus mode for sampling yields more accurate results. Capture an image of the ambient light source, use this white balance data to customize the white balance, recompose the shot, and take the picture.

[0060] Furthermore, the VND+CPL filter can be used in conjunction with other functional filter components 5. The upper ring 3 has a snap-fit ​​and rotatable connection to the functional filter component 5. The functional filter component 5 includes a frame 51, within which a functional filter 52 is fixed. The functional filter 52 can be a UV filter, graduated filter, soft focus filter, starburst filter, etc., with different functional effects. A second quick-release component 53 is symmetrically provided at the bottom of the frame 51. The second quick-release component 53 includes a button 531, a second pressure plate 532, and a second spring 533. A first spring groove 513 is formed on the bottom wall of the frame 51, and the second spring 533 is placed within the first spring groove 513. The top of button 531 is provided with a second slider 5313, which is also placed in the first spring groove 513. One end of the second spring 533 abuts against the inner wall of the first spring groove 513, and the other end abuts against the wall of the second slider 5313. A limiting plate 5311 is provided on the outside of button 531. A second pressure plate 532 is fixed to the bottom of the frame 51 by screws to limit the limiting plate 5311 and form a displacement cavity for the limiting plate 5311. A second snap-fit ​​plate 5312 is also provided at the bottom of button 531. A third annular slot 36 is opened on the top inner wall of the upper ring 3. The second snap-fit ​​plate 5312 and the third annular slot 36 snap and rotate together.

[0061] Similarly, during disassembly, the second snap-fit ​​plate 5312 can be moved towards the axis of the lens frame 51 and disengaged from the third annular slot 36 by manually pushing the button 531. At this time, the functional filter assembly 5 can be quickly disassembled. The second slider 5313 compresses the second spring 533. After the force on the button 531 is released, the button 531 automatically resets under the restoring force of the compressed second spring 533.

[0062] Furthermore, the top of the upper ring 3 is provided with an arc-shaped slider 34, and the bottom of the frame 51 is provided with a second arc-shaped groove 511. The arc-shaped slider 34 is placed in the second arc-shaped groove 511 and can slide relative to the trajectory of the second arc-shaped groove 511.

[0063] Furthermore, the VND+CPL filter can also be used with the lens cap assembly 6. The upper end of the upper ring 3 is snapped and rotatably connected to the lens cap assembly 6. The lens cap assembly 6 includes a lens cap 61. The bottom of the lens cap 61 has symmetrical second mounting slots 611 on both sides. The second mounting slots 611 contain a third quick-release assembly 64. The third quick-release assembly 64 includes a handle 641, a third spring 642, and a third pressure plate 643. The second mounting slot 611 contains a second stop 612. The top of the handle 641 has a second spring groove 6411. The third spring 642 is placed in the second spring groove 6411, with one end of the third spring 642 abutting against the second stop 612 and the other end abutting against the wall of the second spring groove 6411. The third pressure plate 643... The handle 641 is fixed to the second assembly groove 611 by screws to limit the two sides and form a displacement cavity for the handle 641. The handle 641 has limiting grooves 6413 on both sides. The top of the third pressure plate 643 has a limiting block 6431. The limiting block 6431 is placed in the limiting groove 6413 and can slide relative to the limiting groove 6413. The bottom of the handle 641 has a third snap-fit ​​plate 6412. The top inner wall of the upper ring 3 has a third annular snap-fit ​​groove 36. The third snap-fit ​​plate 6412 and the third annular snap-fit ​​groove 36 snap and rotate together. The bottom wall of the lens cover 61 has a third arc slide groove 613. The top of the upper ring 3 has an arc slider 34. The arc slider 34 is placed in the third arc slide groove 613 and can slide relative to the trajectory of the third arc slide groove 613.

[0064] The lens cap assembly 6 protects the VND+CPL filter. When the VND+CPL filter needs to be used, the third latching plate 6412 can be moved towards the axis of the lens cap 61 and disengaged from the third annular latching groove 36 by manually pushing the handle 641. At this time, the lens cap assembly 6 can be quickly disassembled. The wall of the second spring groove 6411 compresses the third spring 642. After the force on the handle 641 is released, the handle 641 automatically resets under the restoring force of the compressed third spring 642.

[0065] Furthermore, the top of the lens cover 61 has a mounting slot, in which an NFC identification chip 62 is installed, and a silicone sticker 63 is fixed on the NFC identification chip 62.

[0066] NFC identification chips are a crucial component of Near Field Communication (NFC) technology. They integrate the functions of an inductive card reader, an inductive card, and peer-to-peer communication, enabling devices to exchange data when they are close to each other. These chips typically possess communication capabilities and a certain amount of computing power; some products also include encryption logic circuitry and encryption / decryption modules to ensure the security of data transmission.

[0067] In this solution, before the NFC identification chip 62 is installed on the product, product information is entered via a mobile app. When in use, the active device (card reader) sends a request to the NFC tag via modulated electromagnetic waves. The passive device (NFC card) responds through load modulation, returning the stored data. After receiving the information, the card reader parses the unique ID (UID), account information, or other data stored in the NFC tag to identify the product information and improve device management efficiency.

[0068] In addition, the functional filter assembly 5 can also be used with the lens cap assembly 6. The structure of the lens cap assembly 6 remains unchanged. Specifically, the lens cap assembly 6 is snapped and rotatably connected to the upper end of the lens frame 51. The lens cap assembly 6 includes a lens cap 61. The bottom of the lens cap 61 has symmetrical second mounting slots 611 on both sides. The second mounting slots 611 contain a third quick-release assembly 64. The third quick-release assembly 64 includes a handle 641, a third spring 642, and a third pressure plate 643. The second mounting slots 611 contain a second stop 612. The top of the handle 641 has a second spring groove 6411. The third spring 642 is placed in the second spring groove 6411, with one end of the third spring 642 abutting against the second stop 612 and the other end abutting against the wall of the second spring groove 6411. The third pressure plate 643 is fixed to the handle in the second mounting slot 611 by screws. The handle 641 is limited on both sides, forming a displacement cavity. The handle 641 has limiting grooves 6413 on both sides. The third pressure plate 643 has a limiting block 6431 on the top. The limiting block 6431 is placed in the limiting groove 6413 and can slide relative to the limiting groove 6413. The handle 641 has a third snap-fit ​​plate 6412 at the bottom. The lens frame 51 has an arc-shaped slot 514 on the top. The third snap-fit ​​plate 6412 and the arc-shaped slot 514 snap and rotate together. The bottom wall of the lens cover 61 has a third arc-shaped sliding groove 613. The top of the lens frame 51 has an arc plate 512. The arc plate 512 is placed in the third arc-shaped sliding groove 613 and can slide relative to the trajectory of the third arc-shaped sliding groove 613. The top of the lens cover 61 has a mounting groove. The mounting groove has an NFC recognition chip 62. A silicone sticker 63 is fixed on the NFC recognition chip 62.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A camera quick-release VND+CPL filter, characterized in that, The adapter ring (1) has an external thread for connecting a camera lens at its bottom. The inner wall of the top of the adapter ring (1) has a first annular groove (11). The upper end of the adapter ring (1) has a lower ring (2). The lower ring (2) is fixedly connected to a first CPL lens (21). The lower ring (2) has a first assembly groove (22) symmetrically opened on both sides of its bottom. The first assembly groove (22) is provided with a first quick-release component (23). The top of the lower ring (2) has a first arc groove (24). The inner wall of the top of the lower ring (2) has a second annular groove (25). The upper end of the lower ring (2) is connected to an upper ring (3) by locking and rotating. The outer wall of the bottom of the upper ring (3) has an annular buckle (31). The annular buckle (31) engages with the second annular groove (25) and rotates. The upper ring (3) is fixedly connected to a second CPL lens (35). The bottom of the upper ring (3) has a first slider (32). The first slider (32) is placed in the first arc groove (24) and can... The first quick-release assembly (23) slides relative to the first arc groove (24) along its trajectory; the first quick-release assembly (23) includes a hand pressure plate (231), a first spring (232) and a first pressure plate (233), a first stop (221) is provided in the first assembly groove (22), a limiting hole (2311) is provided on the hand pressure plate (231), the first stop (221) is placed inside the limiting hole (2311) on one side, the first spring (232) is placed inside the limiting hole (2311), and the first spring (232) One end abuts against the first stop (221), and the other end abuts against the limiting hole (2311) on the other side away from the first stop (221). The bottom of the hand pressure plate (231) is provided with a first snap-fit ​​plate (2312). The first snap-fit ​​plate (2312) snaps and rotates with the first annular slot (11). The first pressure plate (233) is fixed to the first assembly groove (22) by screws to limit the hand pressure plate (231) and form a displacement cavity for the hand pressure plate (231).

2. The camera quick-release VND+CPL filter according to claim 1, characterized in that, A rotating lever (33) is provided on the outer side of the upper ring (3).

3. The camera quick-release VND+CPL filter according to claim 1, characterized in that, The adapter ring (1) has a rear lens cover (4) fitted on its top inner wall. The rear lens cover (4) has protrusions (41) arranged in an evenly spaced ring on its bottom outer wall. A white balance calibration sticker (42) is pasted and fixed on the top of the rear lens cover (4).

4. The camera quick-release VND+CPL filter according to claim 1, characterized in that, The upper end of the upper ring (3) is connected to a functional filter assembly (5) by a snap-fit ​​mechanism. The functional filter assembly (5) includes a frame (51), and a functional filter (52) is fixed inside the frame (51). A second quick-release assembly (53) is symmetrically provided at the bottom of the frame (51). The second quick-release assembly (53) includes a button (531), a second pressure plate (532), and a second spring (533). A first spring groove (513) is provided on the bottom wall of the frame (51), and the second spring (533) is placed in the first spring groove (513). A second slider (5313) is provided on the top of the button (531), and the second slider (5313) is also placed in the first spring groove. Inside the groove (513), one end of the second spring (533) abuts against the inner wall of one side of the first spring groove (513), and the other end abuts against the wall of the second slider (5313). A limiting plate (5311) is provided on the outside of the button (531). The second pressure plate (532) is fixed to the bottom of the frame (51) by screws to limit the limiting plate (5311) and form a displacement cavity for the limiting plate (5311). A second snap-fit ​​plate (5312) is also provided at the bottom of the button (531). A third annular slot (36) is opened on the top inner wall of the upper ring (3). The second snap-fit ​​plate (5312) and the third annular slot (36) snap and rotate together.

5. The camera quick-release VND+CPL filter according to claim 4, characterized in that, The top of the upper ring (3) is provided with an arc slider (34), and the bottom of the frame (51) is provided with a second arc groove (511). The arc slider (34) is placed in the second arc groove (511) and can slide relative to the trajectory of the second arc groove (511).

6. The camera quick-release VND+CPL filter according to claim 1, characterized in that, The upper end of the upper ring (3) is connected to the lens cap assembly (6) by a snap-fit ​​and rotation. The lens cap assembly (6) includes a lens cap (61). The bottom sides of the lens cap (61) are symmetrically provided with second mounting slots (611). The second mounting slots (611) are provided with a third quick-release assembly (64). The third quick-release assembly (64) includes a handle (641), a third spring (642), and a third pressure plate (643). The second mounting slots (611) are provided with a second stop (612). The top of the handle (641) is provided with a second spring slot (6411). The third spring (642) is placed in the second spring slot (6411), and one end of the third spring (642) abuts against the second stop (612), and the other end abuts against the wall of the second spring slot (6411). The third pressure plate (643) is fixed to the second mounting slot (611) by screws. 1) Limit the two sides of the handle (641) and form a displacement cavity for the handle (641). Limiting grooves (6413) are provided on both sides of the handle (641). A limiting block (6431) is provided on the top of the third pressure plate (643). The limiting block (6431) is placed in the limiting groove (6413) and can slide relative to the limiting groove (6413). A third snap plate (6412) is provided at the bottom of the handle (641). A third annular slot (36) is provided on the inner wall of the top of the upper ring (3). The third snap plate (6412) and the third annular slot (36) are snapped together and rotated together. A third arc groove (613) is provided on the bottom wall of the lens cover (61). An arc slider (34) is provided on the top of the upper ring (3). The arc slider (34) is placed in the third arc groove (613) and can slide relative to the trajectory of the third arc groove (613).

7. The camera quick-release VND+CPL filter according to claim 6, characterized in that, The top of the lens cap (61) has a mounting slot, and an NFC identification chip (62) is installed in the mounting slot. A silicone sticker (63) is fixed on the NFC identification chip (62).

8. The camera quick-release VND+CPL filter according to claim 4 or 5, characterized in that, The upper end of the lens frame (51) is connected to a lens cap assembly (6) via a snap-fit ​​and rotatable connection. The lens cap assembly (6) includes a lens cap (61). The bottom sides of the lens cap (61) are symmetrically provided with second mounting slots (611). The second mounting slots (611) are provided with a third quick-release assembly (64). The third quick-release assembly (64) includes a handle (641), a third spring (642), and a third pressure plate (643). The second mounting slots (611) are provided with a second stop (612). The top of the handle (641) is provided with a second spring slot (6411). The third spring (642) is placed in the second spring slot (6411), and one end of the third spring (642) abuts against the second stop (612), and the other end abuts against the wall of the second spring slot (6411). The third pressure plate (643) is fixed to the second mounting slot (611) by screws to limit the two sides of the handle (641) and form the handle (641). The displacement cavity has a limiting groove (6413) on both sides of the handle (641), and a limiting block (6431) on the top of the third pressure plate (643). The limiting block (6431) is placed in the limiting groove (6413) and can slide relative to the limiting groove (6413). A third locking plate (6412) is provided at the bottom of the handle (641), and an arc-shaped locking groove (514) is opened at the top of the frame (51). The third locking plate (6412) and the arc-shaped locking groove (514) are connected. The card is rotated and engaged. The bottom wall of the lens cover (61) is provided with a third arc groove (613). The top of the lens frame (51) is provided with an arc plate (512). The arc plate (512) is placed in the third arc groove (613) and can slide relative to the trajectory of the third arc groove (613). The top of the lens cover (61) is provided with an installation slot. An NFC identification chip (62) is provided in the installation slot. A silicone sticker (63) is fixed on the NFC identification chip (62).

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