Neck-hanging type intelligent optical zoom glasses equipment

The neckband-style intelligent optical zoom glasses device utilizes a motor module and a posture sensing module to achieve precise control of lens diopter and automatic switching of training modes, solving the problem of inconvenience in using traditional optical zoom lenses and improving the effectiveness of vision training.

CN121325441APending Publication Date: 2026-01-13XIAMEN NINE INVESTMENT TEN TECH CO LTD
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Patent Information

Application Number
CN202511862988.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-11
Publication Date
2026-01-13

AI Technical Summary

Technical Problem

Traditional optical zoom lenses have a fixed focal length, requiring users to frequently change or wear multiple pairs of glasses, which is inconvenient.

Method used

Design a neckband-style intelligent optical zoom glasses device. The optical zoom glasses are electrically connected to a neckband controller. A motor module drives a ball screw to move a slider and lenses. Combined with a posture sensing module, the device monitors the head status in real time and automatically switches training modes.

Benefits of technology

It achieves precise control of lens refractive power, enriches the user experience, avoids the inconvenience of traditional glasses, and improves the effect of vision training.

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Abstract

The invention relates to the technical field of optical glasses, and discloses neck-hanging type intelligent optical zoom glasses equipment which structurally comprises optical zoom glasses, a neck ring controller, a lens module, a posture sensing module and a control system.A motor module drives a ball screw to rotate in the positive direction and the negative direction, a sliding block is driven to move left and right, and the lens module is driven to rotate in the positive direction and the negative direction; according to the optical zoom glasses, the connected free-form surface lenses are synchronously driven to move, the left glasses lens and the right glasses lens can be accurately controlled to generate different diopters, the training effect is achieved, then a mobile phone terminal APP is connected with the optical zoom glasses through Bluetooth, user data and visual light data can be input through a mobile phone terminal APP interface, and the user experience is improved. The APP terminal can automatically match the corresponding visual training method according to the visual light data of the user, the lens module can start training according to an algorithm, and after training is completed, the trained naked eye visual acuity is recorded in a training record in the APP terminal, so that the user can conveniently record and observe a training result, and the use experience of the user is enriched.
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Description

Technical Field

[0001] This invention belongs to the field of optical eyewear, specifically relating to a neck-hook smart optical zoom eyewear device. Background Technology

[0002] With social development, the number of people with vision problems such as presbyopia and myopia is growing, and the demand for vision rehabilitation training is also increasing. At this time, optical zoom glasses have emerged. Optical zoom glasses are a type of smart glasses that adjust the focal length and diopter of the lens through physical means. Its core principle is the same as optical zoom technology, that is, to achieve clear imaging at different distances by changing the lens structure or material properties. Traditional optical zoom lenses have a fixed focal length, which means users need to frequently change or wear multiple pairs of glasses depending on the usage scenario, which is extremely inconvenient. This application proposes a neckband-style intelligent optical zoom glasses device to improve upon the aforementioned shortcomings. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a neck-hanging smart optical zoom glasses device with intelligent optical zoom function.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A neckband-style intelligent optical zoom glasses device includes optical zoom glasses and a neckband controller. The optical zoom glasses and the neckband controller are electrically connected and are detachable.

[0005] In one specific implementation, the optical zoom glasses include a housing, a lens module, a right temple, a left temple, and an indicator light. The lens module is installed at the bottom of the housing, and the right temple and left temple are hinged to the sides of the housing. The right temple and left temple have the same structure. An indicator light is installed on the housing, which can indicate whether the optical zoom glasses have started operating.

[0006] In one specific implementation scheme, the indicator light has multiple display modes. When the optical zoom glasses are powered on, the indicator light stays on. When the optical zoom glasses enter training mode, the indicator light flashes and then turns off. When the training mode is paused, the indicator light will continue to flash slowly. When the battery is low, the indicator light will flash rapidly.

[0007] In one specific implementation scheme, the outer shell includes a placement frame, a top cover, a buckle, a motor module one, and a motor module two. The placement frame is built into the outer shell and fixed to it. The interior of the placement frame is divided into two placement cavities, and motor module one and motor module two are installed in the cavities. Motor module one and motor module two have the same structure. The top of the placement frame is movably covered by the top cover, and the top cover is movably fixed to the placement frame by a buckle.

[0008] In one specific implementation, the motor module includes a stepper motor, a ball screw, a slider, and a limiting rod. The stepper motor is installed inside the placement frame and is wirelessly connected to an external neckband controller and a mobile phone control terminal. The output end of the stepper motor is connected to the ball screw, and a slider is slidably fitted on the ball screw. A limiting rod is slidably fitted on the slider, and both ends of the limiting rod are fixed inside the placement frame.

[0009] In one specific implementation, a magnet is fixed to the bottom of the slider, and positioning holes are provided on both sides of the magnet, with both positioning holes being provided on the slider.

[0010] In one specific implementation, the lens module includes a freeform surface lens, a liquid crystal curved surface lens, a magnetic block, and protrusions. A magnetic block is mounted on the top of the freeform surface lens, and protrusions are symmetrically arranged on the magnetic block. The diameter of the protrusions is the same as the positioning hole at the bottom of the slider. The magnetic block and the magnet can be interlocked and are opposite poles to each other, which can generate an attraction force. A liquid crystal curved surface lens is provided on one side of the freeform surface lens, and the top of the liquid crystal curved surface lens is engaged with the bottom of the placement frame.

[0011] In one specific implementation, a bone conduction speaker assembly is installed inside the left temple of the mirror. The bone conduction speaker assembly is connected to the neckband controller via Bluetooth. One end of the left temple has a connection port, through which it is electrically connected to the neckband controller.

[0012] In one specific implementation, the neck collar controller includes a housing, a communication cable, an attitude sensing module, and a control system. The communication cable is installed on the housing, and the other end of the communication cable is connected to a connection port on the optical zoom glasses. The attitude sensing module and the control system are also installed on the housing.

[0013] In one specific implementation, the control system includes a power button, a volume up button, a volume down button, and a play / pause button, which are sequentially mounted on the outer casing.

[0014] In a specific feasible implementation, a Bluetooth connection is established between a mobile app and the neckband controller. User data and vision data are then input into the mobile app interface. The app will automatically match the corresponding vision training method based on the user's vision data. The lens module will start training according to the algorithm. After the training is completed, the uncorrected visual acuity is recorded in the training record within the app, making it convenient for the user to record and observe the training results.

[0015] In one specific implementation, the attitude sensing module is integrated inside the neck collar controller, including a three-axis gyroscope, a three-axis accelerometer, and a three-axis magnetometer, all integrated into the attitude sensing module.

[0016] In one specific implementation, the triaxial gyroscope is used to accurately measure the angular velocity of the user's head in three axes to determine the direction and speed of head rotation.

[0017] In one specific implementation, the triaxial accelerometer is used to measure the linear acceleration experienced by the head, including gravitational acceleration. By analyzing the acceleration data through an algorithm, the static attitude angle of the head relative to the direction of gravity, especially the pitch angle, can be calculated to determine whether the user is looking down or forward.

[0018] In one specific implementation, the control unit inside the attitude sensing module can process data from the gyroscope, accelerometer, and geomagnetic sensor according to the Kalman filter algorithm to obtain stable and reliable Euler angle data of the head attitude.

[0019] According to the above-mentioned technical solution, the present invention provides a neck-hook style intelligent optical zoom glasses device, which has the following beneficial effects: (1) The present invention drives the ball screw to rotate in both directions by the motor module, which will drive the slider on it to move left and right, thereby synchronously driving the connected freeform lens to move. It can accurately control the left and right lenses to produce different refractive powers, better realize the training course, and achieve the training effect.

[0020] (2) The present invention connects the mobile phone APP with the optical zoom glasses via Bluetooth. Users can input user data and vision data through the mobile phone APP interface. The APP will automatically match the corresponding vision training method according to the user's vision data. The lens module will start training according to the algorithm. After the training is completed, the uncorrected visual acuity after training will be recorded in the training record inside the APP, which makes it convenient for users to record and observe the training results and enrich the user experience.

[0021] (3) The present invention installs bone conduction speaker components inside both the left and right temples. The bone conduction speaker components are connected to the neckband controller via Bluetooth and are located near the ears when worn. They can obtain audio signals through Bluetooth data transmission between the internal circuit board processor and the neckband controller, and transmit the obtained audio signals to the tibia around the ears after processing, so that the user can hear the sound of the transmitted analog signal, avoiding the inconvenience of using traditional Bluetooth headphones or earbuds.

[0022] (4) The present invention monitors the user’s head status in real time through the posture sensing module located on the neck ring controller. When the head is continuously tilted down and the pitch angle exceeds the threshold, it can be determined that the user is looking down at a book. When the head posture is close to horizontal, it can be determined that the user is looking at a distance. Thus, it can switch to the corresponding mode and transmit the signal to the neck ring controller to switch the optical zoom training mode, thereby improving the training effect. Attached Figure Description

[0023] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a neckband-style smart optical zoom glasses device according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the optical zoom glasses in the embodiments of this application; Figure 3 This is a schematic diagram of the outer shell structure in an embodiment of this application; Figure 4 This is a schematic diagram of the internal structure of the placement frame in an embodiment of this application; Figure 5 This is a schematic diagram of the motor module structure in an embodiment of this application; Figure 6 This is a schematic diagram of the lens module structure in an embodiment of this application; Figure 7 This is a schematic diagram of the temple structure in an embodiment of this application; Figure 8 This is a schematic diagram of the neck collar controller in an embodiment of this application; Figure 9 This is a schematic diagram of the control flow on the mobile terminal in an embodiment of this application; Figure 10 This is a schematic diagram of the attitude sensing module in an embodiment of this application.

[0024] In the diagram: Optical zoom glasses-1, neckband controller-2, outer shell-11, lens module-12, right temple-13, left temple-14, indicator light-15, placement frame-111, top cover-112, buckle-113, motor module one-114, motor module two-115, stepper motor-31, ball screw-32, slider-33, limit rod-34, magnet-331, positioning hole-332, freeform mirror Components: 121. LCD curved lens; 122. Magnetic block; 123. Protrusion; 124. Bone conduction speaker assembly; 141. Connector; 142. Housing; 21. Communication cable; 22. Attitude sensing module; 23. Control system; 231. Power button; 24. Volume up button; 25. Volume down button; 26. Play / pause button; 27. Three-axis gyroscope; 41. Three-axis accelerometer; 42. Three-axis geomagnetic sensor; 43. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0026] Example 1: Please refer to Figures 1-7 The specific embodiments of the present invention are as follows: A neck-hook smart optical zoom glasses device includes optical zoom glasses 1 and a neck ring controller 2. The optical zoom glasses 1 and the neck ring controller 2 are electrically connected and are detachable. The glasses can be suspended around the user's neck via the neck ring controller 2.

[0027] Please see Figure 2 The optical zoom glasses 1 include a housing 11, a lens module 12, a right temple 13, a left temple 14, and an indicator light 15. The lens module 12 is installed at the bottom of the housing 11. The lens module 12 can train the wearer's eyes through optical zoom. The right temple 13 and the left temple 14 are hinged to the two sides of the housing 11. The right temple 13 and the left temple 14 have the same structure and are worn through the right temple 13 and the left temple 14. An indicator light 15 is installed on the housing 11. The indicator light 15 can indicate whether the optical zoom glasses 1 has started operating.

[0028] Please see Figure 2 The indicator light 15 has multiple display modes. When the optical zoom glasses 1 is powered on, the indicator light 15 stays on. When the optical zoom glasses 1 enters the training mode, the indicator light 15 flashes and then goes out. When the training mode is paused, the indicator light 15 will continue to flash slowly. When the battery is low, the indicator light 15 will flash rapidly.

[0029] Please see Figures 3-4The outer casing 11 includes a placement frame 111, a top cover 112, a buckle 113, a first motor module 114, and a second motor module 115. The placement frame 111 is built into the outer casing 11 and fixed to the outer casing 11. The interior of the placement frame 111 is divided into two placement cavities, and the first motor module 114 and the second motor module 115 are installed in the cavities. The first motor module 114 and the second motor module 115 have the same structure. The top cover 112 is movably covered on the top of the placement frame 111. The top cover 112 is movably fixed to the placement frame 111 by the buckle 113, which facilitates the subsequent disassembly of the top cover 112 to repair or replace the internal motor modules. The top cover 112 can protect the internal motor modules from dust.

[0030] Please see Figures 4-5 The motor module 114 includes a stepper motor 31, a ball screw 32, a slider 33, and a limit rod 34. The stepper motor 31 is installed inside the placement frame 111 and is wirelessly connected to the external neckband controller 2 and the mobile phone control terminal. The output end of the stepper motor 31 is connected to the ball screw 32. The slider 33 is slidably fitted on the ball screw 32. The slider 33 and the ball screw 32 are guided by a guide block, which can convert the rotational motion into linear motion. The limit rod 34 is slidably fitted on the slider 33. The two ends of the limit rod 34 are fixed inside the placement frame 111, which can limit the movement of the slider 33 and increase stability.

[0031] Please see Figures 5-6 A magnet 331 is fixed at the bottom of the slider 33. Positioning holes 332 are provided on both sides of the magnet 331. Both positioning holes 332 are provided on the slider 33.

[0032] Please see Figures 5-6 The lens module 12 includes a freeform lens 121, a liquid crystal curved lens 122, a magnet 123, and a protrusion 124. A magnet 123 is installed on the top of the freeform lens 121, and protrusions 124 are symmetrically arranged on the magnet 123. The diameter of the protrusions 124 is the same as that of the positioning hole 332 at the bottom of the slider 33, and they can be inserted into the positioning hole 332 to quickly position the installation of the freeform lens 121. The magnet 123 and the magnet 331 can be interlocked with each other and are opposite poles to generate an attraction force, so that the freeform lens 121 is adsorbed and installed on the slider 33 and moves synchronously with the slider 33. A liquid crystal curved lens 122 is provided on one side of the freeform lens 121. The top of the liquid crystal curved lens 122 is engaged with the bottom of the placement frame 111, so that the liquid crystal curved lens 122 can be installed on the outer shell 11.

[0033] Please see Figure 7The left temple 14 houses a bone conduction speaker assembly 141, which is connected to the neckband controller 2 via Bluetooth. When worn, it is located near the ear and can acquire audio signals through Bluetooth data transmission between the internal circuit board processor and the neckband controller 2. After processing, the acquired audio signals are transmitted to the tibia around the ear. One end of the left temple 14 has a connection port 142, which is electrically connected to the neckband controller 2.

[0034] The stepper motor 31 drives the connected ball screw 32 to rotate in both directions. The rotation of the ball screw 32 drives the slider 33 located on it to move left and right, thereby synchronously moving the freeform lens 121 connected to the slider 33. When the freeform lens 121 moves 1mm, the lens power of the freeform lens 121 changes by 72°. The lens power of the optical zoom glasses 1 is generated by the superposition of the freeform lens 121 and the liquid crystal curved lens 122. The two lenses have different superposition positions and different refractive powers. By driving the freeform lens 121 to move through the stepper motor 31, it is possible to accurately control the different refractive powers of the left and right lenses, so as to better realize the training course and achieve the training effect.

[0035] Example 2: Please refer to Figures 8-9 The specific embodiments of the present invention are as follows: Please see Figure 8 The neck collar controller 2 includes a housing 21, a communication cable 22, an attitude sensing module 23, and a control system 231. The communication cable 22 is installed on the housing 21, and the other end of the communication cable 22 is connected to the connection port 142 on the optical zoom glasses 1 to communicate with the neck collar controller 2. The attitude sensing module 23 and the control system 231 are also installed on the housing 21. The control system 231 can control the operation of the optical zoom glasses 1.

[0036] Please see Figure 8 The control system 231 includes a power button 24, a volume up button 25, a volume down button 26, and a play / pause button 27. The power button 24, volume up button 25, volume down button 26, and play / pause button 27 are sequentially mounted on the outer casing 21 and can control the optical zoom glasses 1 to perform functions such as power on / off, training degree selection, training mode selection, and music playback.

[0037] Please see Figure 8 By pressing and holding the volume down button 26, you can enter the degree selection. After entering the degree selection, each press of the volume up button 25 will increase the degree by 50 degrees, and each press of the volume down button 26 will decrease the degree by 50 degrees. After selecting the desired degree, clicking the power button 24 will start the training.

[0038] Please see Figure 8Pressing the play / pause button 27 enters the pause state, and then pressing and holding the volume up button 25 will announce the current training degree. The announced voice will be transmitted through the bone conduction speaker component 141. Then, the play / pause button 27 can be used to switch between loop modes.

[0039] Please see Figures 8-9 The device connects to the neckband controller 2 via Bluetooth through a mobile app. Users then input their own data and vision data into the app. The app automatically matches the corresponding vision training method based on the user's vision data. The lens module 12 then begins training according to the algorithm. After training is complete, the uncorrected visual acuity is recorded in the training record within the app, allowing users to record and observe the training results.

[0040] Example 3: Please refer to Figures 8-10 The specific embodiments of the present invention are as follows: Please see Figure 10 The attitude sensing module 23 is integrated inside the neck collar controller 2, including a three-axis gyroscope 41, a three-axis accelerometer 42 and a three-axis magnetometer 43, all of which are integrated into the attitude sensing module 23.

[0041] Please see Figure 10 The three-axis gyroscope 41 is used to accurately measure the rotational angular velocity of the user's head in three axes to determine the direction and speed of head rotation.

[0042] Please see Figure 10 The triaxial accelerometer 42 is used to measure the linear acceleration experienced by the head, including gravitational acceleration. By analyzing the acceleration data through an algorithm, the static attitude angle of the head relative to the direction of gravity is calculated, especially the pitch angle, which can determine whether the user is looking down or forward.

[0043] Please see Figure 10 The three-axis geomagnetic sensor 43 can correct the cumulative error of the gyroscope in the horizontal direction, ensuring that the attitude sensing module 23 can stably determine the user's orientation for a long time.

[0044] Please see Figure 10 The control unit inside the attitude sensing module 23 can process the data from the gyroscope, accelerometer and geomagnetic sensor according to the Kalman filter algorithm to obtain stable and reliable head attitude Euler angle data, and can compare the obtained data with a preset threshold to determine the user's head state. When the system detects that the head is continuously tilted down and the tilt angle exceeds the threshold, it can determine that the user is looking down at a book, thereby triggering the close-up mode. When the head posture is detected to be close to horizontal, it can determine that the user is looking at a distance, and thus switch to flat light or telephoto mode. The signal is transmitted to the neck collar controller 2 via electrical signal to switch between optical zoom training modes and improve training effectiveness.

[0045] Based on the above embodiments, the specific working principle is as follows: When vision training is required using optical zoom glasses 1, the user wears the optical zoom glasses 1 and the neckband controller 2, and then presses and holds the power button 24 on the neckband controller 2 to turn it on. At this time, the indicator light 15 on the glasses will remain on. Then, the user can enter the degree selection by pressing and holding the volume down button 26 according to the degree of vision training they need. After entering the degree selection, each press of the volume up button 25 increases the degree by 50 degrees, and each press of the volume down button 26 decreases the degree by 50 degrees. After completing the selection of the desired degree, press the power button 24 once to start the training. Once training begins, the neckband controller 2 transmits signals to the motor modules 114 and 115 in the optical zoom glasses 1. The stepper motor 31 on the neckband controller 2 drives the connected ball screw 32 to rotate in both directions, causing the slider 33 on the neckband to move left and right. This, in turn, moves the connected freeform lens 121, allowing for precise control of the left and right lenses to produce different refractive powers. This facilitates better training and achieves the desired training effect. At the same time, the optical zoom glasses 1 can also be controlled via a mobile app for training. During zoom training, the posture sensing module 23 on the neckband controller 2 monitors the user's head position in real time. When it detects that the head is continuously tilted down and the tilt angle exceeds the threshold, it can determine that the user is looking down at a book and trigger the close-up mode. When it detects that the head posture is close to horizontal, it can determine that the user is looking at a distance and switch to the flat or telephoto mode. The optical zoom training mode is switched through the neckband controller 2 via electrical signals to improve the training effect.

[0046] In the description of this invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0047] The control method of the present invention is through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Therefore, the present invention will not explain the control method and circuit connection in detail.

[0048] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A neckband-style intelligent optical zoom glasses device, comprising optical zoom glasses (1) and a neckband controller (2), wherein the optical zoom glasses (1) and the neckband controller (2) are electrically connected and are detachable; characterized in that: The optical zoom glasses (1) include a housing (11), a lens module (12) located at the bottom of the housing (11), a right temple (13) and a left temple (14) mounted on both sides of the housing (11) and rotated by hinges. The right temple (13) and the left temple (14) have the same structure. An indicator light (15) is installed on the housing (11). The outer casing (11) includes a placement frame (111), a motor module one (114) and a motor module two (115) installed inside the placement frame (111). The motor module one (114) and the motor module two (115) have the same structure. The top of the placement frame (111) is movably covered by a top cover (112). The top cover (112) and the placement frame (111) are movably fixed together by a buckle (113). The motor module 1 (114) includes a stepper motor (31), a ball screw (32) located at the output end of the stepper motor (31), and a slider (33) for sliding cooperation with the ball screw (32). The optical zoom glasses can be adjusted by moving the freeform surface lens through the motor module 1. The lens module (12) includes a freeform surface lens (121), a liquid crystal curved surface lens (122), a magnetic block (123) and a protrusion (124). The top of the freeform surface lens (121) is equipped with a magnetic block (123), and the magnetic block (123) is symmetrically provided with protrusions (124). The side of the freeform surface lens (121) is provided with a liquid crystal curved surface lens (122), and the top of the liquid crystal curved surface lens (122) is engaged with the bottom of the placement frame (111). The neck collar controller (2) includes an outer shell (21), a communication line (22) installed on the outer shell (21), an attitude sensing module (23) and a control system (231) installed on the outer shell (21). The attitude sensing module (23) is integrated inside the neck collar controller (2), including a three-axis gyroscope (41), a three-axis accelerometer (42) and a three-axis magnetometer (43), which are all integrated into the attitude sensing module (23).

2. The neck-hook smart optical zoom glasses device according to claim 1, characterized in that: The indicator light (15) has multiple display modes. When the optical zoom glasses (1) are powered on, the indicator light (15) stays on. When the optical zoom glasses (1) enters the training mode, the indicator light (15) flashes and then goes out. When the training mode is paused, the indicator light (15) will continue to flash slowly. When the power is low, the indicator light (15) will flash rapidly.

3. The neckband-style intelligent optical zoom glasses device according to claim 1, characterized in that: The motor module (114) also includes a limiting rod (34) that is slidably mounted on the slider (33), and the two ends of the limiting rod (34) are fixed in the placement frame (111).

4. The neck-hook smart optical zoom glasses device according to claim 3, characterized in that: A magnet (331) is fixed to the bottom of the slider (33), and positioning holes (332) are provided on both sides of the magnet (331).

5. The neck-hook smart optical zoom glasses device according to claim 1, characterized in that: The left temple (14) is equipped with a bone conduction speaker assembly (141), which is connected to the neck ring controller (2) via Bluetooth and is located near the ear when worn. One end of the left temple (14) is provided with a connection port (142), which is electrically connected to the neck ring controller (2).

6. The neck-hook smart optical zoom glasses device according to claim 1, characterized in that: The control system (231) includes a power button (24), a volume up button (25), a volume down button (26), and a play / pause button (27), which are sequentially mounted on the outer casing (21).

7. The neck-hook smart optical zoom glasses device according to claim 1, characterized in that: The three-axis gyroscope (41) is used to accurately measure the rotational angular velocity of the user's head in three axes and to determine the direction and speed of head rotation.

8. The neck-hook smart optical zoom glasses device according to claim 1, characterized in that: The triaxial accelerometer (42) is used to measure the linear acceleration of the head, including gravitational acceleration. The acceleration data is analyzed by an algorithm to calculate the static attitude angle of the head relative to the direction of gravity, especially the pitch angle, which can determine whether the user is looking down or forward.

9. The neck-hook smart optical zoom glasses device according to claim 1, characterized in that: The diameter of the protrusion (124) is the same as the positioning hole (332) at the bottom of the slider (33). The magnetic block (123) and the magnet (331) can be interlocked and are opposite poles to each other to generate an adsorption force, so that the freeform surface lens (121) can be adsorbed and installed on the slider (33) and move synchronously with the slider (33).

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