Eye adjusting device integrating eyelid opening, fundus photography and data port

Abstract

The invention provides eye adjusting equipment integrating eyelid opening, fundus photography and a data port, and belongs to the technical field of intelligent medical wearable equipment. The equipment comprises a glasses frame main body, a non-invasive eyelid opening mechanism, a high-resolution fundus photographing module, diopter-adjustable lenses, a data processing unit and a wired and wireless data port. The eyelid opening mechanism adopts a medical silica gel flexible opening sheet and a push rod, so that safe and automatic eyelid separation is realized; the fundus photographing module supports clear imaging at a field angle of 30-50 degrees based on infrared illumination and a CMOS sensor, and has pupil tracking and automatic focusing functions; the built-in electric control zoom lens can dynamically adjust the diopter from 6.0 D to + 4.0 D. The problems that existing fundus examination equipment is large in size, complex to operate, serious in eyelid shielding, unable to use and the like are solved, and the fundus examination equipment has remarkable clinical application value and industrialization prospects.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ophthalmic medical auxiliary devices and smart wearable devices, in particular to an eye adjustment device integrating eyelid opening and fundus photography and data port. BACKGROUND

[0002] Fundus examination is an important means for clinical diagnosis of systemic or ocular diseases such as diabetic retinopathy, glaucoma, macular degeneration, and hypertensive retinopathy. Traditional fundus imaging mainly relies on table-mounted fundus cameras or handheld ophthalmoscopes. These devices usually need to be operated by trained medical staff in professional medical institutions. Patients need to dilate their pupils, fix their heads, and cooperate with the examination in a dark room. Such examination procedures are cumbersome, time-consuming, and require high skill, which makes it difficult to apply to large-scale population screening, home self-examination, or primary medical settings.

[0003] In recent years, with the development of wearable devices and artificial intelligence technology, some studies have attempted to miniaturize fundus imaging and integrate it into glasses carriers. For example, some patents have proposed embedding a camera in smart glasses for iris recognition or gaze tracking, but the imaging resolution, optical design, and illumination method are not optimized for the fundus structure, and clear retinal images cannot be obtained. Another solution uses an external flexible probe or a contact lens to approach the cornea for imaging, which can improve image quality, but has the risk of strong invasiveness, discomfort, and easy corneal damage or infection, which is not acceptable to users.

[0004] In addition, existing fundus imaging devices generally face the key problem of eyelid obstruction. Under natural conditions, the upper and lower eyelids partially cover the edge of the cornea, especially under non-dilated conditions, the effective imaging area is limited, resulting in the lack of peripheral visual field of the fundus. Currently, the main solution to this problem is to manually open the eyelids, such as using fingers or metal eyelid openers, which not only makes the operation inconvenient and has high hygiene risks, but also makes it difficult to achieve stable and continuous eyelid separation in a self-service scenario. Although a few experimental devices attempt to introduce mechanical arms or micro-motors to assist in opening the eyelids, they generally have problems such as large size, high noise, rough control, lack of force feedback protection, and easy to cause eye compression discomfort or even damage.

[0005] At the same time, most existing devices have single functions, focusing only on image acquisition, and lack organic integration with vision correction, accommodation, data processing, and remote transmission functions. Users often need to remove their daily glasses when performing fundus examination, which affects visual clarity and reduces cooperation; and the collected data often needs to be exported through additional steps, making it difficult to achieve real-time analysis and cloud linkage, which restricts its application value in chronic disease management and digital health ecology.

[0006] In summary, the current technology has the following main shortcomings: it lacks a safe, comfortable, and automated non-invasive eyelid opening mechanism, and severe eyelid obstruction seriously affects the integrity of the image; the imaging system is not optimized for fundus structure, and its resolution, illumination, and focusing capabilities are insufficient, making it difficult to meet the needs of clinical screening; its functions are fragmented, failing to integrate vision correction, fundus examination, and intelligent data interaction; and it lacks a wearable design that meets medical safety standards, limiting its promotion and application in home and grassroots scenarios.

[0007] Therefore, there is an urgent need for a lightweight, wearable eye-accommodating glasses device that integrates non-invasive eyelid opening, high-quality fundus imaging, dynamic refractive adjustment, and intelligent data communication. Therefore, an eye-accommodating device integrating eyelid opening, fundus photography, and a data port is proposed. Summary of the Invention

[0008] The purpose of this invention is to address the problems raised in the existing background technology. To achieve the above-mentioned objective, this invention provides the following technical solution: an eye accommodation device integrating eyelid opening, fundus photography, and a data port, comprising a frame body, an eyelid opening mechanism, a fundus photography module, a data processing unit, and a data port; the frame body is provided with a lens ring adapted to the contour of the human eye. The eyelid opening mechanism includes a pair of push rods respectively disposed on the upper and lower edges of the inner side of the lens ring. Each push rod is connected to an arc-shaped flexible opening piece at its end. The surface of the opening piece is covered with medical-grade silicone with a thickness of 0.5 to 2.0 mm and a radius of curvature of 8 to 15 mm, which is used to non-invasively open the upper and lower eyelids. The maximum extension stroke of the push rod is 3 to 8 mm, the thrust range is 0.1 to 0.5 N, and the response time is ≤200 ms. The fundus photography module is integrated inside the lens ring and faces the pupil. It includes an infrared illumination source with a wavelength of 780-850nm, a CMOS image sensor with a resolution of no less than 5 million pixels, and a fixed-focus optical lens with a focal length of 4-6 mm and an imaging field of view of 30°-50°. The data processing unit is located inside the main body of the lens frame and is used to receive and process the image data acquired by the fundus photography module; The data port includes a wired interface and a wireless communication module, used to transmit the processed image data to an external terminal device.

[0009] As a preferred technical solution of the present invention, the extension stroke of the flexible expansion piece is dynamically adjusted by a microcontroller according to the eyelid tension feedback signal, with an adjustment accuracy of ±0.1 mm, and automatically stops advancing when the resistance exceeds 0.6 N to prevent eye damage.

[0010] As a preferred technical solution of the present invention, the fundus photography module is equipped with an autofocus mechanism with a focusing range of 15-30 mm and a focusing time of ≤500 ms. Combined with a real-time tracking algorithm based on pupil center positioning, it can still maintain clear imaging of the retinal area when the user's head offset angle does not exceed ±10°.

[0011] As a preferred technical solution of the present invention, the lens ring is embedded with an electronically controlled liquid crystal zoom lens or a mechanically sliding bifocal lens to form a diopter adjustment mechanism. The diopter adjustment range is −6.0 D to +4.0 D, the adjustment step size is 0.25 D, and the response delay is ≤300 ms.

[0012] As a preferred technical solution of the present invention, it also includes a biometric sensor, which includes an infrared proximity sensor and a blink detector, for detecting whether the user is in a state of open-eye gaze; when the open-eye time is continuously detected to be ≥1.5 seconds and the pupil diameter change rate is <10% / s, the fundus photography module is triggered to work.

[0013] As a preferred technical solution of the present invention, the data processing unit includes a microcontroller with a main frequency of ≥200 MHz, a dedicated image enhancement coprocessor, and a local flash memory storage module with a capacity of ≥8 GB, which supports real-time noise reduction, contrast enhancement, and JPEG or HEIF format compression of the original fundus images, with a single image processing delay of ≤1 second.

[0014] As a preferred technical solution of the present invention, the wired interface is a USB-C 3.2 Gen1 interface, which supports a maximum data transmission rate of 5Gbps; the wireless communication module supports Wi-Fi 6 (802.11ax) and Bluetooth 5.2 protocols, with a wireless transmission distance of ≥10 meters in an unobstructed environment, and an end-to-end latency of ≤3 seconds for uploading images to the cloud platform.

[0015] As a preferred technical solution of the present invention, the temple integrates a lithium polymer rechargeable battery with a rated capacity of ≥400 mAh and an intelligent power management module, which supports continuous fundus photography of no less than 50 times or continuous work of ≥4 hours, and is equipped with a magnetic wireless charging interface with a charging power of 5W and a 0-100% charging time of ≤90 minutes.

[0016] As a preferred technical solution of the present invention, the inner side of the lens ring is provided with a flexible silicone pad with a thickness of 1 to 3 mm and a Shore hardness of 30 to 50 A, which is used to improve wearing comfort and reduce device slippage. At the same time, it serves as a buffer layer for the eyelid opening mechanism to avoid eye pressure damage. The overall structure is made of titanium alloy or TR-90 polymer material, with a total weight of ≤80 grams and a lens ring width of 130 to 145 mm.

[0017] As a preferred technical solution of the present invention, it also includes a vision adjustment control module, which is electrically connected to the data processing unit and works in conjunction with the biometric sensor, fundus photography module and refractive power adjustment mechanism to perform dynamic refractive compensation based on the user's real-time visual state; the vision adjustment control module performs dynamic tracking compensation, and if a change in the user's head posture is detected during continuous shooting or multi-angle imaging, it calculates the change in the effective refractive path through the built-in IMU sensor or pupil tracking offset, and automatically fine-tunes the refractive power to maintain retinal imaging quality, with a response delay ≤300 ms; The vision adjustment control module is integrated into the data processing unit. It is run by a microcontroller with a main frequency of ≥200 MHz, which runs an embedded adjustment algorithm and uses a dedicated image enhancement coprocessor to accelerate the sharpness evaluation calculation.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention integrates an automatic eyelid opening mechanism, a high-resolution fundus imaging system, an intelligent data processing unit and a multimodal communication port into a lightweight glasses structure. The weight of the whole device is ≤80 grams, and the size is consistent with that of conventional optical glasses, which makes it convenient for daily wear, home self-examination and community screening. It breaks through the limitations of traditional fundus cameras that are bulky and dependent on professional venues.

[0019] This invention uses a flexible stretching sheet with a curvature radius of 8-15 mm and a surface covered with 0.5-2.0 mm medical-grade silicone, combined with a push rod with a precise and controllable thrust of 0.1-0.5 N, to achieve gentle and stable stretching of the upper and lower eyelids; it automatically stops when the resistance exceeds 0.6 N, effectively avoiding corneal damage or discomfort and significantly improving user compliance.

[0020] This invention integrates a 780–850 nm infrared light source, a CMOS sensor with over 5 megapixels, and a 4–6 mm fixed-focus lens. Combined with autofocus focusing time ≤500 ms and a pupil tracking algorithm, it can still acquire clear and stable fundus images with a field of view of 30°–50° even under conditions of slight head movement within ±10°, meeting the initial screening needs of common eye diseases such as diabetic retinopathy and glaucoma.

[0021] This invention uses an infrared proximity sensor and a blink detector to determine the user's eye-opening gaze state, and only initiates shooting under this condition, avoiding invalid image acquisition and privacy leakage, and improving the system's intelligence level and usage security.

[0022] This invention features an electronically controlled liquid crystal or mechanical zoom lens with a refractive power adjustment range of −6.0 D to +4.0 D, supporting dynamic focusing in 0.25 D steps. This allows users to obtain a clear visual experience while undergoing fundus examinations, achieving the integration of examination and correction functions and expanding the application value of the device in scenarios such as myopia management and presbyopia assistance.

[0023] This invention is equipped with a USB-C 3.2 wired interface with a speed of ≥5 Gbps and a Wi-Fi 6 / Bluetooth 5.2 wireless module, which can upload encrypted fundus images to a cloud platform or hospital information system within 3 seconds, supporting remote consultation and the construction of long-term eye health records, and promoting early screening and treatment of eye diseases.

[0024] This invention features a built-in ≥400 mAh battery that supports continuous operation for ≥4 hours or more than 50 fundus photography sessions, and adopts 5W magnetic wireless charging, fully charging within 90 minutes, balancing durability and ease of use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure provided by the present invention; Figure 2 A schematic diagram of the biometric sensor provided by the present invention; Figure 3 This is a schematic diagram of the data processing unit structure provided by the present invention; Figure 4 This is a schematic diagram of the data port structure provided by the present invention; Figure 5 This is a schematic diagram of the eyelid opening mechanism provided by the present invention.

[0026] The image shows: 1. Frame body; 2. Eyelid opening mechanism; 201. Arc-shaped flexible opening piece; 3. Fundus photography module; 4. Data processing unit; 5. Data port; 6. Biometric sensor; 7. Infrared proximity sensor; 8. Blink detector; 9. Flexible silicone pad. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention.

[0028] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that, in the absence of conflict, the embodiments and features and technical solutions in the embodiments of the present invention can be combined with each other. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] Example 1: An eye accommodation device integrating eyelid opening, fundus photography and data port, including a frame body 1, an eyelid opening mechanism 2, a fundus photography module 3, a data processing unit 4 and a data port 5, the frame body 1 is provided with a lens ring adapted to the contour of the human eye; The eyelid opening mechanism 2 includes a pair of push rods respectively disposed on the upper and lower edges of the inner side of the lens ring. The ends of the push rods are connected to an arc-shaped flexible opening plate 201. The surface of the opening plate is covered with medical-grade silicone with a thickness of 0.5 to 2.0 mm and a radius of curvature of 8 to 15 mm, which is used to non-invasively open the upper and lower eyelids. The maximum extension stroke of the push rod is 3 to 8 mm, the thrust range is 0.1 to 0.5 N, and the response time is ≤200 ms. The fundus photography module 3 is integrated inside the lens ring and faces the pupil. It includes an infrared illumination source with a wavelength of 780-850 nm, a CMOS image sensor with a resolution of no less than 5 million pixels, and a fixed-focus optical lens with a focal length of 4-6 mm and an imaging field of view of 30°-50°. The data processing unit 4 is located inside the main body 1 of the lens frame and is used to receive and process the image data collected by the fundus photography module 3; the data port 5 includes a wired interface and a wireless communication module, which is used to transmit the processed image data to an external terminal device.

[0030] The extension stroke of the flexible stretcher is dynamically adjusted by a microcontroller based on eyelid tension feedback signals, with an adjustment accuracy of ±0.1 mm. It automatically stops advancing when resistance exceeds 0.6 N to prevent eye damage.

[0031] The fundus photography module 3 is equipped with an autofocus mechanism with a focusing range of 15–30 mm and a focusing time of ≤500 ms. Combined with a real-time tracking algorithm based on pupil center positioning, it can maintain clear imaging of the retinal area even when the user's head offset angle does not exceed ±10°.

[0032] The lens ring is embedded with an electronically controlled liquid crystal zoom lens or a mechanically sliding bifocal lens, forming a diopter adjustment mechanism with a diopter adjustment range of −6.0 D to +4.0 D, an adjustment step of 0.25 D, and a response delay of ≤300 ms.

[0033] It also includes a biometric sensor 6, which includes an infrared proximity sensor 7 and a blink detector 8, used to detect whether the user is in a state of open-eye gaze; when the open-eye time is continuously detected to be ≥1.5 seconds and the pupil diameter change rate is <10% / s, the fundus photography module 3 is triggered to work.

[0034] The data processing unit 4 includes a microcontroller with a main frequency of ≥200 MHz, a dedicated image enhancement coprocessor, and a local flash memory storage module with a capacity of ≥8 GB. It supports real-time noise reduction, contrast enhancement, and JPEG or HEIF format compression of raw fundus images, with a single image processing latency of ≤1 second.

[0035] The wired interface is a USB-C 3.2 Gen1 interface, supporting a maximum data transfer rate of 5 Gbps; the wireless communication module supports Wi-Fi 6 and Bluetooth 5.2 protocols, with a wireless transmission distance of ≥10 meters in unobstructed environments, and an end-to-end latency of ≤3 seconds for image upload to the cloud platform.

[0036] The temples integrate a lithium polymer rechargeable battery with a rated capacity of ≥400 mAh and an intelligent power management module, supporting at least 50 continuous fundus photography sessions or continuous operation for ≥4 hours. They are also equipped with a magnetic wireless charging interface with a charging power of 5W and a 0-100% charging time of ≤90 minutes.

[0037] The inner side of the lens rim features a flexible silicone pad 9 with a thickness of 1–3 mm and a Shore A hardness of 30–50 A. This pad enhances wearing comfort and reduces device slippage, while also serving as a buffer layer for the eyelid opening mechanism 2 to prevent eye pressure injury. The overall structure is made of titanium alloy or TR-90 polymer material, with a total weight of ≤80 grams and a lens rim width of 130–145 mm.

[0038] The user wears the device on their face. The main frame 1 is made of lightweight titanium alloy or TR-90 polymer material, with a total weight of ≤80 grams. The lens rim width is 130–145 mm to fit most adult facial contours. The inner side of the lens rim has a flexible silicone pad 9 with a thickness of 1–3 mm and a Shore hardness of 30–50 A, which not only improves wearing comfort but also acts as a buffer layer to prevent pressure damage to the eyes.

[0039] When the user enters the detection state, the system uses biometric sensor 6 to determine whether the shooting conditions are met. The eyelid opening mechanism 2 is activated: a pair of push rods located at the upper and lower edges of the lens extend synchronously, causing the end-end curved flexible opening plate 201 to gently contact the upper and lower eyelids. The surface of the opening plate is covered with 0.5–2.0 mm medical-grade silicone, with a curvature radius of 8–15 mm, conforming to the natural curvature of the eyelid; the push rod stroke is 3–8 mm, the thrust is controlled within the range of 0.1–0.5 N, and the response time is ≤200 ms. The microcontroller receives eyelid tension feedback signals in real time and dynamically adjusts the opening stroke with an accuracy of ±0.1 mm; once resistance exceeding 0.6 N is detected, the advancement immediately stops to ensure non-invasive safety.

[0040] The biometric sensor 6 includes an infrared proximity sensor 7 and a blink detector 8, which continuously monitor the eye status. The fundus camera module 3 is only triggered when the system continuously detects that the user's eye-opening time is ≥1.5 seconds and the pupil diameter change rate is <10% / s, indicating a stable gaze state, thus avoiding invalid or blurry imaging.

[0041] The fundus photography module 3 is integrated inside the lens ring, directly opposite the pupil, and works in conjunction with the following components: Infrared illumination source, 780–850 nm: provides non-visible light illumination, avoiding strong light stimulation, while penetrating the pupil to achieve retinal illumination; Fixed-focus optical lens with a focal length of 4–6 mm, paired with a CMOS image sensor of 5 megapixels or higher, providing a field of view of 30°–50°; autofocus mechanism: focusing range of 15–30 mm, focusing time ≤500 ms; Real-time pupil center tracking algorithm: Combined with head posture estimation, it automatically compensates within ±10° of the user's head deviation to ensure clear imaging of the retinal area at all times. An electronically controlled liquid crystal zoom lens or a mechanically sliding bifocal lens is embedded within the lens rim to form the diopter adjustment mechanism. Depending on the user's refractive error, ranging from −6.0 D to +4.0 D, the system rapidly adjusts the optical path in 0.25 D steps, with a response delay ≤300 ms, ensuring clear fundus images for users with varying visual acuity.

[0042] The acquired raw images are processed in real time by the data processing unit 4: a microcontroller with a main frequency of ≥200 MHz coordinates the process; a dedicated image enhancement coprocessor performs operations such as noise reduction and contrast enhancement; The processed image is compressed in JPEG or HEIF format, with a single-image processing latency of ≤1 second; data is temporarily stored in ≥8 GB of local flash memory, supporting offline use. The processed image is uploaded via data port 5: Wired mode: USB-C 3.2 Gen1 interface, maximum speed 5 Gbps; Wireless mode: supports Wi-Fi 6 and Bluetooth 5.2, with an unobstructed transmission distance of ≥10 meters. End-to-end upload latency to the cloud platform is ≤3 seconds, facilitating remote diagnosis. The temples feature a built-in ≥400 mAh lithium polymer battery, coupled with an intelligent power management module, supporting ≥50 consecutive shots or ≥4 hours of continuous operation. The magnetic wireless charging port provides 5W fast charging, with a 0–100% charging time of ≤90 minutes, enhancing ease of use.

[0043] The vision accommodation control module is electrically connected to the data processing unit 4 and, in conjunction with the biometric sensor 6, fundus photography module 3, and refractive power adjustment mechanism, achieves dynamic refractive compensation based on the user's real-time visual state. The vision accommodation control module performs the following functions: Refractive state prediction: Before or during fundus photography, the user's equivalent spherical power SE is estimated by using features such as retinal vessel clarity, macular reflection intensity and pupil edge sharpness in the fundus image, combined with the eye optical model under infrared illumination and a lightweight convolutional neural network (CNN) algorithm. The estimation error range is controlled within ±0.5 D. Closed-loop adjustment mechanism: The estimated refractive power is used as the target value to drive the refractive power adjustment mechanism composed of an electronically controlled liquid crystal zoom lens or a mechanically sliding bifocal lens. The adjustment is automatically adjusted in 0.25 D steps within the range of −6.0 D to +4.0 D until the fundus image clarity index, such as the Tenengrad gradient function value or the Laplacian variance, reaches a local maximum value. User interaction calibration: It supports inputting the user's previous optometry data through external terminal devices as the initial adjustment reference value; at the same time, it guides the user to provide simple subjective sharpness feedback when using the device for the first time, realizing human-machine collaborative calibration; Dynamic tracking compensation: During continuous shooting or multi-angle imaging, if a change in the user's head posture is detected, the effective refractive path is changed by calculating the offset through the built-in IMU sensor or pupil tracking. The refractive power is automatically fine-tuned to maintain the retinal imaging quality, with a response delay of ≤300 ms.

[0044] The vision accommodation control module is integrated inside the data processing unit 4. The embedded accommodation algorithm is run by a microcontroller with a main frequency of ≥200 MHz, and a dedicated image enhancement coprocessor is used to accelerate the sharpness evaluation calculation, ensuring that the single refractive accommodation cycle time is ≤800 ms.

[0045] When the device is in non-fundus shooting mode, the refractive adjustment mechanism can switch to daily vision assistance mode, automatically setting the corresponding refractive power according to the user's preset far / near vision needs, realizing the dynamic vision correction function of smart electronic glasses.

[0046] All adjustment processes are constrained by safety thresholds: when a blink signal is detected and triggered by the blink detector 8 or when the eyelid resistance exceeds 0.6 N, the refractive adjustment action is immediately paused and returned to the previous stable state to ensure eye comfort and operational safety.

[0047] The specific workflow of the visual accommodation function is as follows: Visual state perception stage When the user wears the device and is in a detection ready state, the biometric sensor 6 is activated: Infrared proximity sensor 7 detects whether the eyeball is close to the lens rim; Blink detector 8 monitors eyelid opening and closing in real time; When the conditions of eye-opening time ≥ 1.5 seconds and pupil diameter change rate < 10% / s are met continuously, the user is determined to be in a stable gaze state, triggering the subsequent process.

[0048] Initial refractive parameter acquisition The system prioritizes reading the user's pre-stored refraction data, such as spherical and cylindrical values ​​synchronized via a mobile app, as the initial refractive power setting; If there is no historical data, the default starting point is 0 D, or the initial value is estimated based on the user's age, pupil size and other physiological characteristics. For example, teenagers tend to have +0.5 D, and the elderly tend to have +1.0 D farsightedness compensation.

[0049] Fundus image acquisition and sharpness assessment Fundus photography module 3 acquires one frame of infrared fundus image under the current refractive power setting; Data processing unit 4 calls a dedicated image enhancement coprocessor to perform real-time noise reduction and contrast enhancement on the image; Meanwhile, the vision adjustment control module 10 calculates image sharpness evaluation indicators such as Laplacian variance, Tenengrad gradient energy, or frequency domain sharpness as a quantitative basis for imaging quality under the current refractive state.

[0050] Dynamic optimization of diopter closed-loop adjustment Based on the clarity metric, the microcontroller executes either a hill-climbing search algorithm or a gradient ascent strategy: With a step size of 0.25 D, the electronically controlled liquid crystal zoom lens or the driven mechanical sliding mechanism is finely adjusted within the range of −6.0 D to +4.0 D; After each adjustment, reacquire the image and assess its sharpness; If two consecutive adjustments fail to improve sharpness or the improvement is less than the threshold, it is determined that a local optimum has been reached, and adjustment is stopped. The response delay for the entire adjustment process is ≤300 ms, and the response delay for a single complete adjustment cycle is ≤800 ms.

[0051] Optional enhancement: Combine with a lightweight CNN model to directly regress and predict the equivalent spherical power SE from the original fundus image as the initial value for adjustment, which greatly shortens the search time.

[0052] Security monitoring and interruption mechanism Throughout the adjustment process: The eyelid opening mechanism 2 continuously monitors the resistance of the push rod. If it exceeds 0.6 N, all actions will stop immediately. Once the blink detector 8 detects a blink, it pauses adjustment and maintains the current lens state until the user regains stable focus; The IMU sensor can be optionally integrated into the temple to monitor head offset. If it exceeds ±10°, the effective optical path length change is dynamically compensated by combining the pupil tracking algorithm.

[0053] Mode switching and multi-scenario applications Fundus examination mode: Visual accommodation serves to obtain the clearest retinal image. After accommodation is completed, the refractive power is locked, and high-resolution imaging is initiated. Daily vision assist mode, non-examination state: Users can switch between near and far viewing modes via voice commands, a mobile app, or touch controls on the temples. The device automatically sets the lens power according to the preset refractive configuration, such as +2.0 D for near vision, to realize the function of electronic reading glasses or myopia assistance; It supports linkage with ambient light sensors, automatically reducing sensitivity in low light conditions to avoid accidental triggering.

[0054] Data recording and cloud collaboration: Each adjustment result, including the final diopter, sharpness score, and user feedback, is stored in local flash memory ≥8 GB; Data can be uploaded to a medical cloud platform via data port 5 (USB-C) or Wi-Fi 6 for long-term vision change trend analysis or remote optometry assistance.

[0055] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. An eye accommodation device integrating eyelid opening, fundus photography, and a data port, characterized in that, It includes a frame body (1), an eyelid opening mechanism (2), a fundus photography module (3), a data processing unit (4) and a data port (5). The frame body (1) is provided with a lens ring that fits the contour of the human eye. The eyelid opening mechanism (2) includes a pair of push rods respectively disposed on the upper and lower edges of the inner side of the lens ring. The ends of the push rods are connected to an arc-shaped flexible opening piece (201). The surface of the opening piece is covered with medical-grade silicone with a thickness of 0.5 to 2.0 mm and a radius of curvature of 8 to 15 mm, which is used to non-invasively open the upper and lower eyelids. The maximum extension stroke of the push rod is 3 to 8 mm, the thrust range is 0.1 to 0.5 N, and the response time is ≤200 ms. The fundus photography module (3) is integrated inside the lens ring and faces the pupil position. It includes an infrared illumination source with a wavelength of 780-850 nm, a CMOS image sensor with a resolution of not less than 5 million pixels, and a fixed-focus optical lens with a focal length of 4-6 mm and an imaging field of view of 30°-50°. The data processing unit (4) is located inside the main body (1) of the eyeglass frame and is used to receive and process the image data collected by the fundus photography module (3); The data port (5) includes a wired interface and a wireless communication module, used to transmit the processed image data to an external terminal device.

2. The eye accommodation device integrating eyelid opening, fundus photography, and data port according to claim 1, characterized in that, The extension stroke of the flexible expansion piece is dynamically adjusted by the microcontroller based on the eyelid tension feedback signal, with an adjustment accuracy of ±0.1 mm, and automatically stops advancing when the resistance exceeds 0.6 N.

3. The eye accommodation device integrating eyelid opening, fundus photography, and data port according to claim 1, characterized in that, The fundus photography module (3) is equipped with an autofocus mechanism with a focusing range of 15-30 mm and a focusing time of ≤500 ms. Combined with a real-time tracking algorithm based on pupil center positioning, it maintains clear imaging of the retinal area when the user's head offset angle does not exceed ±10°.

4. The eye accommodation device integrating eyelid opening, fundus photography, and data port according to claim 1, characterized in that, The lens ring is embedded with an electronically controlled liquid crystal zoom lens or a mechanically sliding bifocal lens, forming a diopter adjustment mechanism with a diopter adjustment range of −6.0 D to +4.0 D, an adjustment step size of 0.25 D, and a response delay of ≤300 ms.

5. The eye accommodation device integrating eyelid opening, fundus photography, and data port according to claim 1, characterized in that, It also includes a biometric sensor (6), which includes an infrared proximity sensor (7) and a blink detector (8) for detecting whether the user is in a state of open-eye gaze; When the eye-opening time is continuously detected to be ≥1.5 seconds and the pupil diameter change rate is <10% / s, the fundus photography module (3) is triggered to work.

6. The eye accommodation device integrating eyelid opening, fundus photography, and data port according to claim 1, characterized in that, The data processing unit (4) includes a microcontroller with a main frequency of ≥200 MHz, a dedicated image enhancement coprocessor, and a local flash memory storage module with a capacity of ≥8 GB. It supports real-time denoising, contrast enhancement, and JPEG or HEIF format compression of the original fundus image, with a single image processing delay of ≤1 second.

7. The eye accommodation device integrating eyelid opening, fundus photography, and data port according to claim 1, characterized in that, The wired interface is a USB-C 3.2 Gen1 interface, supporting a maximum data transfer rate of 5 Gbps; the wireless communication module supports Wi-Fi 6 and Bluetooth 5.2 protocols, with a wireless transmission distance of ≥10 meters in an unobstructed environment, and an end-to-end latency of ≤3 seconds for image upload to the cloud platform.

8. The eye accommodation device integrating eyelid opening, fundus photography, and data port according to claim 1, characterized in that, The temples of the glasses integrate a lithium polymer rechargeable battery with a rated capacity of ≥400 mAh and an intelligent power management module, supporting at least 50 continuous fundus photography sessions or continuous operation for ≥4 hours. They are also equipped with a magnetic wireless charging interface with a charging power of 5W and a 0-100% charging time of ≤90 minutes.

9. The eye accommodation device integrating eyelid opening, fundus photography, and data port according to claim 1, characterized in that, The inner side of the lens ring is provided with a flexible silicone pad (9) with a thickness of 1 to 3 mm and a Shore hardness of 30 to 50 A. The overall structure is made of titanium alloy or TR-90 polymer material, and the total weight is ≤80 grams.

10. An eye accommodation device integrating eyelid opening, fundus photography, and a data port according to claim 9, characterized in that, It also includes a vision adjustment control module, which is electrically connected to the data processing unit (4) and works in conjunction with the biometric sensor (6), the fundus photography module (3) and the refractive power adjustment mechanism to provide dynamic refractive compensation based on the user's real-time visual state; The vision adjustment control module performs dynamic tracking compensation. During continuous shooting or multi-angle imaging, if a change in the user's head posture is detected, the effective refractive path is changed by calculating the offset through the built-in IMU sensor or pupil tracking. The refractive power is automatically fine-tuned to maintain retinal imaging quality, with a response delay of ≤300 ms. The vision adjustment control module is integrated inside the data processing unit (4), and the embedded adjustment algorithm is run by a microcontroller with a main frequency of ≥200 MHz, and the sharpness evaluation calculation is accelerated by a dedicated image enhancement coprocessor.

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