Intelligent optometry lens matching table capable of synchronously collecting interpupillary distance and facial parameters

Abstract

The invention provides an intelligent optometry lens matching table capable of synchronously collecting interpupillary distance and facial parameters, and relates to the field of intelligent optometry, the intelligent optometry lens matching table comprises an equipment main shell, an operation hatch with an outward opening is formed in the equipment main shell, and a top fixing plate is fixedly arranged at the center position of the top of the operation hatch. Through the lifting driver and the double-head adjusting motor which are arranged in the center stand column, vertical lifting and horizontal distance automatic synchronous adjustment of the interpupillary distance measuring module are achieved, meanwhile, the transmission shaft carried by the lifting platform is matched with the interpupillary distance adjusting lead screw, the pre-estimated interpupillary distance range of a patient can be rapidly matched, manual intervention is reduced, and the initial adjusting efficiency is improved; meanwhile, through synchronous acquisition under a unified timestamp and a space coordinate system, including fusion of multiple parameters such as interpupillary distance, facial contour, eye-lens distance and front rake angle, an integrated processor is used for cross validation of data consistency, errors caused by head micro-motion or environmental factors are automatically corrected, and perfect matching of optical parameters and a facial structure is ensured.

Description

Technical Field

[0001] This invention relates to the field of intelligent optometry technology, specifically to an intelligent optometry and lens fitting table that synchronously collects pupillary distance and facial parameters. Background Technology

[0002] Optometry and glasses fitting are crucial steps in correcting human vision, and their core lies in accurately obtaining the optical parameters of the human eye and facial structure parameters. Among these, pupillary distance is the key data that determines the optical center position of the lens, while facial parameters such as lens-to-eye distance and forward tilt angle directly affect the wearing comfort and visual effect of high-end lenses.

[0003] Currently, the mainstream optometry and eyeglass fitting process suffers from significant data fragmentation. Specifically, ocular optical parameters are measured using a computerized refractometer or a comprehensive refractometer; pupillary distance (PD) is obtained using a separate pupillary distance ruler or meter; while facial parameters are mostly measured manually by the optician. This step-by-step, independent data acquisition model has three inherent drawbacks: First, inconsistent measurement benchmarks. Measurements taken with different equipment, at different times, and under different patient head postures result in misalignment of PD, refractive axis, and facial parameter data benchmarks, introducing systematic errors. Second, error accumulation. These benchmark errors are amplified during lens processing and mounting, easily leading to symptoms such as distorted vision and dizziness in wearers. Third, the process is cumbersome and inefficient, highly dependent on the operator's experience, and results in poor consistency.

[0004] Although some optometry devices or stand-alone 3D facial scanners with integrated automatic interpupillary distance measurement functions have emerged in the present technology, they have not fundamentally solved the problem of data benchmark unification. Their measurement is still an independent step in the process, and the acquired optical data and three-dimensional morphological data are isolated from each other, making it impossible to achieve correlation and fusion under a unified spatiotemporal benchmark. Summary of the Invention

[0005] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an intelligent optometry and lens fitting station that simultaneously acquires pupillary distance and facial parameters, thus solving the problems mentioned in the background section.

[0006] Technical solution To achieve the above objectives, the present invention provides the following technical solution: an intelligent optometry and lens fitting station for synchronous acquisition of pupillary distance and facial parameters, comprising a main housing, an outward-opening operating hatch, a top fixing plate fixed at the center of the top of the operating hatch, a vertical central column fixed at the center of the lower end of the top fixing plate, a lifting platform that can be raised and lowered installed at the bottom of the central column, a drive shaft rotatably installed at the lower end of the lifting platform, pupillary distance adjustment screws threadedly connected to both ends of the drive shaft, a module connecting frame fixedly connected to the lower end face of the pupillary distance adjustment screws, a pupillary distance measurement module housing fixedly connected to the lower end face of the module connecting frame, and a detachable optometry lens installed inside the pupillary distance measurement module housing for performing optometry tests.

[0007] Preferably, the two sides of the pupillary distance measurement module housing are provided with outward-facing module grooves on one side away from each other. The module grooves are provided with slidable module mounting seats. The optometry lenses are installed in the module mounting seats. A lens frame is installed at one end of the module mounting seats. The lens frames on both sides and the pupillary distance measurement module housing form a simulated eyeglass frame for easy wearing by optometry patients.

[0008] Preferably, a rotating collar is fitted on the outer side of the top of the central column, and a radial support arm is fixedly connected to one side of the outer end face of the rotating collar. One end of the radial support arm extends outward and is fixedly connected to a vertical guide rail. A crossbeam of the optometry module is installed at the bottom of the vertical guide rail.

[0009] Preferably, a plurality of wide-angle depth-of-field scanning cameras are mounted on one side of the crossbeam of the optometry module near the housing of the interpupillary distance measurement module, and the wide-angle depth-of-field scanning cameras are distributed in an array.

[0010] Preferably, an arc-shaped trajectory drive motor is installed on the top of the main housing of the device, and the arc-shaped trajectory drive motor is poweredly connected to the rotating collar.

[0011] Preferably, vertical lateral support columns are fixedly provided on both sides inside the operating hatch, and an annular filler plate that can be raised and lowered is provided on the arc surface inside the operating hatch. The annular filler plate is semi-circular, and its two ends are installed and connected to the lateral support columns on both sides.

[0012] Preferably, a base is fixedly provided at the bottom of the operating hatch, a lifting drive mechanism is installed on the top of the base, an adjustable lifting support is installed at the top of the lifting drive mechanism, and a seat is installed and connected to the top of the lifting support.

[0013] Preferably, a vertically arranged side support is fixedly provided on one side of the outer end of the main housing of the equipment. The side support has a vertical sliding groove with an outward opening. A vertical lead screw is rotatably connected between the upper and lower walls of the vertical sliding groove. A lifting slider that can move up and down is provided in the vertical sliding groove.

[0014] Preferably, the lifting slider is threadedly connected to the vertical lead screw, and a lifting drive motor is fixedly installed at the bottom of the side support, with the vertical lead screw being poweredly connected to the lifting drive motor.

[0015] Preferably, a vertically erected vertical arm is fixedly provided on one end face of the lifting slider. The vertical arm is cylindrical, and arc-shaped connecting pieces are rotatably connected to the upper and lower end faces of the vertical arm. A facial scanning arc frame is installed and connected between the upper and lower arc-shaped connecting pieces.

[0016] Preferably, a plurality of high-precision facial 3D scanning modules are installed on the inner arc surface of the facial scanning frame and on the side near the operating hatch, and the high-precision facial 3D scanning modules are arranged in a ring array. Beneficial effects

[0017] This invention provides an intelligent optometry and lens fitting station that simultaneously acquires pupillary distance and facial parameters. It has the following beneficial effects: This invention utilizes a central column-mounted lifting driver and a dual-headed adjusting motor to achieve automatic synchronous adjustment of the vertical lifting and horizontal spacing of the pupillary distance measurement module. Simultaneously, the transmission shaft mounted on the lifting platform, in conjunction with the pupillary distance adjustment screw, can quickly match the patient's estimated pupillary distance range, reducing manual intervention and improving initial adjustment efficiency.

[0018] This invention utilizes a wide-angle depth-of-field scanning camera array mounted on the beam of the optometry module to work in conjunction with a high-precision 3D scanning module on a facial scanning arc frame. An arc-shaped trajectory drive motor drives a rotating collar to adjust the scanning module's angle along a semi-circular trajectory. Combined with the vertical lifting capabilities of the vertical guide rail and the lifting slider, a dynamic scanning network is formed in three-dimensional space. Through synchronized acquisition using a unified timestamp and spatial coordinate system, multiple parameters such as interpupillary distance, facial contour, lens-to-eye distance, and tilt angle are fused. An integrated processor is used to cross-validate data consistency, automatically correcting errors caused by head movements or environmental factors, ensuring a perfect match between optical parameters and facial structure.

[0019] In this invention, the optometry lens adopts a detachable modular mounting base design, which supports quick replacement of lens types according to the patient's needs. The modular slide and the lens frame form a simulated eyeglass frame structure, improving wearing comfort. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2This is a perspective view of the external structure of the present invention; Figure 3 This is a front view of the external structure of the present invention; Figure 4 This is a side view of the external structure of the present invention; Figure 5 For the present invention Figure 3 Sectional view along the AA direction; Figure 6 For the present invention Figure 1 Enlarged structural diagram of the housing component of the middle pupil distance measurement module.

[0021] In the diagram: 101. Main housing of the equipment; 102. Base; 103. Lifting drive mechanism; 104. Lifting support column; 105. Operating hatch; 106. Facial scanning arc frame; 107. High-precision facial 3D scanning module; 108. Vertical arm; 109. Lifting slider; 110. Vertical slide rail; 111. Vertical lead screw; 112. Side support; 113. Annular fill light plate; 114. Arc-shaped trajectory drive motor; 115. Optometry module crossbeam; 116. Pupil distance measurement module housing; 118. 119. Arc-shaped connector; 120. Lateral support column; 121. Seat; 122. Lifting drive motor; 123. Central column; 124. Rotating collar; 125. Top fixing plate; 126. Radial support arm; 127. Vertical guide rail; 128. Module connecting frame; 129. Optometry lens; 130. Pupillary distance adjustment screw; 131. Drive shaft; 132. Lifting platform; 133. Lens holder; 134. Wide-angle depth-of-field scanning camera; 135. Module slide; 136. Module mounting base. Detailed Implementation

[0022] This invention provides an intelligent optometry and lens fitting station that simultaneously acquires pupillary distance and facial parameters, such as... Figure 1-6 As shown, the device includes a main housing 101, an outward-facing operating hatch 105, a top fixing plate 124 fixed at the top center of the operating hatch 105, a vertical central column 122 fixed at the lower center of the top fixing plate 124, a lifting platform 131 that can be raised and lowered installed at the bottom of the central column 122, a drive shaft 130 rotatably installed at the lower end of the lifting platform 131, both ends of the drive shaft 130 extending to both sides and threadedly connected to pupillary distance adjustment screws 129, a module connecting frame 127 fixedly connected to the lower end face of the pupillary distance adjustment screws 129, a pupillary distance measurement module housing 116 fixedly connected to the lower end face of the module connecting frame 127, a detachable optometry lens 128 installed in the pupillary distance measurement module housing 116, the optometry lens 128 being used for optometry testing.

[0023] It should be further explained that the central column 122 is equipped with a lifting driver. When the central column 122 is started, it can drive the lifting platform 131 to move up and down. The lifting platform 131 is equipped with an adjustment motor. The adjustment motor is a double-headed motor with both motor shafts connected to the transmission shaft 130. When the adjustment motor is started, it can drive the transmission shafts 130 on both sides to rotate, thereby driving the pupil distance adjustment screw 129 to move and adjust the distance. This, in turn, drives the module connecting frame 127 to move and drives the pupil distance measurement module housing 116 to move, thereby realizing the distance adjustment and subsequent pupil distance detection.

[0024] Furthermore, the two interpupillary distance measurement module housings 116 are located on opposite sides with outward-facing module grooves 134. Module mounting bases 135 are provided within the module grooves 134, and refraction lenses 128 are installed within the module mounting bases 135. A lens holder 132 is installed at one end of the module mounting base 135. The lens holders 132 on both sides and the interpupillary distance measurement module housings 116 form a simulated eyeglass frame for easy wearing by refraction patients.

[0025] It should be further explained that the module mounting base 135 can be replaced according to the specific situation of different patients undergoing optometry, so as to achieve the effect of replacing the optometry lens 128.

[0026] Furthermore, a rotating collar 123 is fitted on the outer side of the top of the central column 122. A radial support arm 125 is fixedly connected to one side of the outer end face of the rotating collar 123. One end of the radial support arm 125 extends outward and is fixedly connected to a vertical guide rail 126. A crossbeam 115 of the optometry module is installed at the bottom of the vertical guide rail 126.

[0027] Furthermore, several wide-angle depth-of-field scanning cameras 133 are installed on one side of the optometry module beam 115 near the pupillary distance measurement module housing 116, and the wide-angle depth-of-field scanning cameras 133 are distributed in an array.

[0028] It should be further noted that the lens holder 132 is used for multi-angle facial scanning of optometrists.

[0029] Furthermore, an arc-shaped trajectory drive motor 114 is installed on the top of the main housing 101 of the equipment, and the arc-shaped trajectory drive motor 114 is poweredly connected to the rotating collar 123.

[0030] It should be further explained that when the arc-shaped trajectory drive motor 114 starts, it can drive the rotating collar 123 to rotate through the power connection, and then support and adjust the position of the vertical guide rail 126 through the radial support arm 125, thereby driving the crossbeam 115 of the optometry module to adjust the angle within the arc semicircle, so that the lens frame 132 can perform multi-angle facial scanning on the optometrist.

[0031] Furthermore, vertical lateral support columns 119 are fixedly installed on both sides inside the operating hatch 105, and an annular supplementary lighting plate 113 that can be raised and lowered is provided on the inner arc surface of the operating hatch 105. The annular supplementary lighting plate 113 is semi-circular arc-shaped, and both ends of the annular supplementary lighting plate 113 are installed and connected to the lateral support columns 119 on both sides.

[0032] It should be further explained that the inner arc surface of the ring-shaped fill light plate 113 is provided with several light lamps for illumination, which facilitates the scanning work of the wide-angle depth-of-field scanning camera 133.

[0033] Furthermore, a base 102 is fixedly provided at the bottom of the operating hatch 105, a lifting drive mechanism 103 is installed on the top of the base 102, an adjustable lifting support column 104 is installed at the top of the lifting drive mechanism 103, and a seat 120 is installed and connected to the top of the lifting support column 104.

[0034] It should be further noted that seat 120 allows patients undergoing optometry to adjust their height during the test.

[0035] Furthermore, a vertically arranged side support 112 is fixedly provided on one side of the outer end of the main housing 101 of the equipment. The side support 112 is provided with a vertical slide groove 110 with an outward opening. A vertical lead screw 111 is rotatably connected between the upper and lower walls of the vertical slide groove 110. A lifting slider 109 that can be raised and lowered is provided in the vertical slide groove 110.

[0036] Furthermore, the lifting slider 109 is threadedly connected to the vertical lead screw 111, and the bottom of the side support 112 is fixedly equipped with a lifting drive motor 121, and the vertical lead screw 111 is poweredly connected to the lifting drive motor 121.

[0037] It should be further explained that when the lifting drive motor 121 starts, it can drive the vertical lead screw 111 to rotate, and then drive the lifting slider 109 to move up and down through the threaded connection.

[0038] Furthermore, a vertically erected vertical arm 108 is fixedly provided on one end face of the lifting slider 109. The vertical arm 108 is cylindrical, and arc-shaped connecting pieces 118 are rotatably connected to the upper and lower end faces of the vertical arm 108. A facial scanning arc frame 106 is installed and connected between the upper and lower arc-shaped connecting pieces 118.

[0039] Furthermore, several high-precision facial 3D scanning modules 107 are installed on the inner arc surface of the facial scanning arc frame 106 and on the side near the operating hatch 105. The high-precision facial 3D scanning modules 107 are arranged in a ring array.

[0040] It should be further explained that the high-precision facial 3D scanning module 107 plays a supporting role in scanning and recognition.

[0041] The usage method of this solution is as follows: S1. The patient undergoing optometry first sits on seat 120. The operator adjusts the height of the lifting column 104 through the lifting drive mechanism 103 so that the patient's eyes are roughly aligned with the central axis of the operating hatch 105, ensuring that the head is in a natural upright posture. The control system inside the main housing 101 of the device is activated, and the lifting driver drives the lifting platform 131 inside the central column 122 to move up and down, initially adjusting the vertical position of the pupillary distance measurement module housing 116 so that it is aligned with the patient's eye position; Simultaneously, the adjustment motor starts, driving the interpupillary distance adjustment screws 129 on both sides to move via the transmission shaft 130, thereby driving the module connecting frame 127 and the interpupillary distance measurement module housing 116 to adjust the horizontal distance, initially matching the patient's estimated interpupillary distance range. In turn, the automated adjustment reduces manual intervention and improves the efficiency of subsequent synchronous data acquisition.

[0042] S2. According to the patient's refraction needs, the operator slides out the module mounting base 135 from the module slide 134, replaces or installs the appropriate refraction lens 128, and the lens frame 132 and the two pupillary distance measurement module housings 116 together simulate the frame structure. After the patient wears it, routine refraction tests can be performed.

[0043] S3. Synchronously start the arc trajectory drive motor 114, drive the radial support arm 125 and the vertical guide rail 126 to move by rotating the collar 123, so that the crossbeam 115 of the optometry module adjusts the angle along the arc trajectory, and the wide-angle depth-of-field scanning camera 133 on the crossbeam 115 of the optometry module is then positioned to a multi-angle acquisition position for dynamic scanning of the patient's face. At the same time, the refractometer lamp inside the ring-shaped fill light plate 113 is activated to provide uniform illumination, ensuring that the wide-angle depth-of-field scanning camera 133 can acquire high-definition images even in low-light environments.

[0044] S4. During the optometry test, the wide-angle depth-of-field scanning camera 133 continuously acquires the patient's facial images in an array distribution manner, and extracts preliminary pupillary distance data and facial contour parameters in real time through image processing algorithms. At the same time, the high-precision facial 3D scanning module 107 is started. At this time, the vertical lead screw 111 is driven to rotate by the lifting drive motor 121, which drives the lifting slider 109 to move up and down along the vertical slide groove 110, thereby adjusting the vertical position of the facial scanning arc frame 106. The arc-shaped connector 118 on the vertical arm 108 allows the facial scanning arc frame 106 to make arc-shaped fine adjustments, ensuring that the inner arc surface of the high-precision facial 3D scanning module 107 distributed in a ring array is always aligned with the key areas of the patient's face. In the above steps, the wide-angle depth-of-field scanning camera 133 and the high-precision facial 3D scanning module 107 operate synchronously under a unified timestamp and spatial coordinate system, collecting optical parameters and 3D morphological parameters, including interpupillary distance, lens-to-eye distance, and forward tilt angle. These parameters are then fused in real time through the built-in data processing unit, thereby ensuring the consistency and accuracy of the data.

[0045] S5. The collected multi-source data, including pupillary distance, facial 3D point cloud, and optometry lens test results, are fused and analyzed by an externally connected integrated processor. The depth information of the wide-angle depth-scanning camera 133 and the point cloud data of the high-precision facial 3D scanning module 107 are used to cross-validate the pupillary distance measurement value and calculate parameters such as lens-eye distance and forward tilt angle. If data inconsistency is detected, the system automatically triggers re-acquisition or corrects it through algorithms to reduce random errors introduced by the patient's head micro-movement or environmental factors. Ultimately, all parameters are output to the lens fitting system for direct lens processing and mounting, ensuring a perfect match between the optical center and facial structure, thereby improving the efficiency and comfort of optometry and lens fitting.

[0046] S6. After use, each module, such as the pupillary distance measurement module housing 116 and the facial scanning arc frame 106, will automatically reset to its initial position via the drive motor for easy use next time. At the same time, the modular design, such as the detachable optometry lens 128, facilitates cleaning and maintenance, ensuring the long-term stability of the equipment.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent optometry and lens fitting station that synchronously acquires pupillary distance and facial parameters, comprising a main housing (101), characterized in that: The main housing (101) of the device is provided with an outward-facing operating hatch (105). A top fixing plate (124) is fixedly installed at the center of the top of the operating hatch (105). A central column (122) is fixedly installed at the center of the lower end of the top fixing plate (124). A lifting platform (131) is installed at the bottom of the central column (122). A drive shaft (130) is rotatably installed at the lower end of the lifting platform (131). Both ends of the drive shaft (130) extend to both sides and are threadedly connected to pupil distance adjustment screws (129). A module connecting frame (127) is fixedly connected to the lower end face of the pupil distance adjustment screw (129). A pupil distance measurement module housing (116) is fixedly connected to the lower end face of the module connecting frame (127). A detachable optometry lens (128) is installed inside the pupil distance measurement module housing (116). The optometry lens (128) is used for optometry testing.

2. The intelligent optometry and lens fitting station for synchronous acquisition of pupillary distance and facial parameters according to claim 1, characterized in that: The two sides of the pupillary distance measurement module housing (116) are provided with a module slide groove (134) with an outward opening on one side. The module slide groove (134) is provided with a module mounting seat (135). The optometry lens (128) is installed in the module mounting seat (135). One end of the module mounting seat (135) is equipped with a lens frame (132). The lens frames (132) on both sides and the pupillary distance measurement module housing (116) form a simulated eyeglass frame for easy wearing by optometry patients.

3. The intelligent optometry and lens fitting station for synchronous acquisition of pupillary distance and facial parameters according to claim 1, characterized in that: The top outer side of the central column (122) is fitted with a rotating collar (123) that is rotatably connected. A radial support arm (125) is fixedly connected to one side of the outer end face of the rotating collar (123). One end of the radial support arm (125) extends outward and is fixedly connected to a vertical guide rail (126). An optometry module crossbeam (115) is installed at the bottom of the vertical guide rail (126).

4. The intelligent optometry and lens fitting station for synchronous acquisition of pupillary distance and facial parameters according to claim 3, characterized in that: Several wide-angle depth-of-field scanning cameras (133) are installed on one side of the crossbeam (115) of the optometry module near the housing (116) of the interpupillary distance measurement module. The wide-angle depth-of-field scanning cameras (133) are arranged in an array.

5. The intelligent optometry and lens fitting station for synchronous acquisition of pupillary distance and facial parameters according to claim 1, characterized in that: An arc-shaped trajectory drive motor (114) is installed on the top of the main housing (101) of the device, and the arc-shaped trajectory drive motor (114) is poweredly connected to the rotating collar (123).

6. The intelligent optometry and lens fitting station for synchronous acquisition of pupillary distance and facial parameters according to claim 1, characterized in that: The operating hatch (105) is fixed with vertical lateral support columns (119) on both sides. The operating hatch (105) has an annular filler plate (113) on its inner arc surface. The annular filler plate (113) is semi-circular and its two ends are connected to the lateral support columns (119) on both sides.

7. The intelligent optometry and lens fitting station for synchronous acquisition of pupillary distance and facial parameters according to claim 1, characterized in that: The bottom of the operating hatch (105) is fixedly provided with a base (102), the top of the base (102) is provided with a lifting drive mechanism (103), the top of the lifting drive mechanism (103) is provided with a lifting support column (104), and the top of the lifting support column (104) is provided with a seat (120).

8. The intelligent optometry and lens fitting station for synchronous acquisition of pupillary distance and facial parameters according to claim 1, characterized in that: A vertically mounted side support (112) is fixedly provided on one side of the outer end of the main housing (101) of the equipment. A vertical slide groove (110) with an outward opening is provided in the side support (112). A vertical screw rod (111) is rotatably connected between the upper and lower walls of the vertical slide groove (110). A lifting slider (109) is provided in the vertical slide groove (110). The lifting slider (109) is threadedly connected to the vertical screw rod (111). A lifting drive motor (121) is fixedly provided at the bottom of the side support (112). The vertical screw rod (111) is poweredly connected to the lifting drive motor (121).

9. The intelligent optometry and lens fitting station for synchronous acquisition of pupillary distance and facial parameters according to claim 8, characterized in that: The lifting slider (109) has a vertically erected vertical arm (108) fixed on one end face. The vertical arm (108) is cylindrical. The upper and lower end faces of the vertical arm (108) are rotatably connected to arc-shaped connectors (118). A facial scanning arc frame (106) is installed and connected between the upper and lower arc-shaped connectors (118).

10. The intelligent optometry and lens fitting station for synchronous acquisition of pupillary distance and facial parameters according to claim 9, characterized in that: Several high-precision facial 3D scanning modules (107) are installed on the inner arc surface of the facial scanning arc frame (106) and on the side near the operation hatch (105). The high-precision facial 3D scanning modules (107) are arranged in a ring array.

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