Trial frame and vision detection method

Abstract

The invention relates to the technical field of ophthalmology detection equipment, and discloses a trial frame and a vision detection method.The trial frame comprises two lens keeping mechanisms, a nose frame, a wearing assembly and an interpupillary distance detection mechanism, and each lens keeping mechanism comprises a lens frame body, a position adjusting assembly and a lens inserting assembly; the position adjusting assembly is arranged to be capable of adjusting the positions of the insertion piece assembly in the horizontal direction and the vertical direction so that the optical center of a test lens on the insertion piece assembly can be aligned with the visual axis of the eyeball of a wearer, the pupil distance detection mechanism comprises two image acquisition assemblies, and the two image acquisition assemblies are arranged on the corresponding glasses frame bodies respectively. In combination with the actual interpupillary distance value and the visual axis angle difference provided by the interpupillary distance detection mechanism, the position of the test lens is dynamically adjusted by using the position adjusting assembly, so that the optical center of the test lens is always aligned with the visual axis of the wearer. By means of the arrangement, personal errors can be reduced, the detection efficiency and accuracy can be improved, and the lens matching precision can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of ophthalmic testing equipment, and in particular, to a trial spectacle frame and a vision testing method. Background Art

[0002] Trial frames are a key tool used in vision testing and correction. They are mainly used to help ophthalmologists or optometrists accurately measure the wearer's pupil distance (PD), visual axis offset and other parameters, and ensure that the optical center of the selected lens is precisely aligned with the wearer's visual axis. Traditional trial frames usually consist of a simple frame structure and rely on manual adjustment of the lens position to achieve preliminary vision correction. However, with the advancement of technology and the improvement of people's requirements for visual quality, traditional trial frames have gradually shown their limitations in terms of accuracy, convenience and user experience.

[0003] Existing trial frames have the following shortcomings: (1) Insufficient precision. Traditional trial frames rely on manual adjustment of the lens position, which is not only time-consuming and laborious, but also difficult to achieve high precision requirements. Especially when dealing with complex visual axis deviation problems, manual adjustment often cannot provide sufficient accuracy, which may lead to poor vision correction effect. (2) Complex operation. The manual adjustment process requires high professional skills and experience, which is difficult for non-professionals to operate. In addition, errors are prone to occur during the manual adjustment process, which increases the possibility of repeated adjustments and prolongs the time of the entire vision test. (3) Lack of real-time feedback. Traditional trial frames cannot monitor the changes in the lens position in real time, so it is impossible to obtain feedback information in time during the adjustment process. This makes it difficult to ensure that the final adjustment result can fully meet the wearer's needs even after multiple adjustments. (4) Poor user experience. Wearing traditional trial frames for a long time may cause discomfort to the wearer, especially during the process of making multiple adjustments. In addition, due to the cumbersome adjustment process, the wearer may feel tired and impatient, affecting the final test results. Summary of the invention

[0004] The purpose of the present invention is to provide a trial glasses frame and a vision detection method to solve the technical problems existing in the related art.

[0005] In order to achieve the above-mentioned object, the present disclosure provides a trial glasses frame, including two lens holding mechanisms, a nose bridge, a wearing component and a pupil distance detection mechanism; Each of the lens holding mechanisms comprises a frame body, a position adjustment component and an inserting piece component, the two frame bodies are arranged at intervals in the horizontal direction and connected through the nose bridge, one end of the position adjustment component is connected to the frame body, the inserting piece component is detachably connected to the other end of the position adjustment component, the inserting piece component is used to receive and insert a test lens, and the position adjustment component is configured to be able to adjust the position of the inserting piece component in the horizontal direction and the vertical direction so that the optical center of the test lens on the inserting piece component is aligned with the visual axis of the wearer's eyeball; The wearing assembly comprises two temples, and the two temples are respectively arranged on the outwardly facing sides of the two frame bodies; The pupil distance detection mechanism includes two image acquisition components, and the two image acquisition components are respectively arranged on the corresponding lens frame bodies.

[0006] Optionally, the lens holding mechanism further comprises a first adsorption member, the position adjustment assembly comprises a motion platform and a parallel motion chain assembly, and the insert assembly comprises a dividing plate and a fixing member; The frame has a first surface and a second surface opposite to each other, a first through hole penetrating the frame is formed in the middle of the frame, the first surface is used to fit the wearer's eyes, and the first through hole is used for the wearer's eyes to pass through; The parallel kinematic chain assembly includes three parallel kinematic chain groups, which are arranged three-symmetrically along the circumference of the frame body, each of which includes two kinematic chains, one end of each of which is movably connected to the second surface, and the other end of each of which is movably connected to the motion platform; A second through hole penetrating the motion platform is formed in the middle of the motion platform, a third through hole penetrating the indexing plate is formed in the middle of the indexing plate, an axial position scale extending along the circumference of the third through hole is provided on the indexing plate, the first adsorption member is mounted on the indexing plate, and the indexing plate can be detachably connected to a side of the motion platform away from the parallel kinematic chain assembly through the first adsorption member, so that the central axis of the second through hole can coincide with the central axis of the third through hole; The fixing member is arranged on the indexing plate, and is used to fix the test lens.

[0007] Optionally, the trial lens frame further comprises a position sensor and an angle sensor, the position adjustment assembly further comprises a first universal joint and a second universal joint, and the kinematic chain comprises a telescopic rod and an electric cylinder group; The telescopic rod comprises a first tube section and a second tube section sleeved on the first tube section, the first tube section is slidably connected to the second tube section, one end of the second tube section away from the first tube section is movably connected to the lens frame through the first universal joint, and one end of the first tube section away from the second tube section is movably connected to the motion platform through the second universal joint; The electric cylinder group is arranged on the outer side wall of one end of the second pipe section close to the mirror frame, and the driving end of the electric cylinder group is transmission-connected with the first pipe section so that the first pipe section can move in the second pipe section; The position sensor is arranged on the first pipe segment to detect a position change of the first pipe segment relative to the second pipe segment; The angle sensor is arranged on the motion platform, and is used to detect the rotation angle or movement distance of the motion platform relative to the lens frame; The number of the first universal joints, the number of the second universal joints, the number of the position sensors, the number of the electric cylinder groups and the number of the telescopic rods correspond one to one.

[0008] Optionally, the lens holding mechanism further comprises two first mounting seats and two second mounting seats which are arranged opposite to each other, the position adjustment assembly further comprises two first connecting seats and two second connecting seats which are arranged opposite to each other, the first universal joint comprises a first connecting block, a first rotating shaft and a second rotating shaft, and the second universal joint comprises a second connecting block, a first rotating shaft and a second rotating shaft; The two first mounting seats are both arranged on the mirror frame, the two second mounting seats are both arranged on the motion platform, the two first connecting seats are both arranged on one end of the second pipe section away from the first pipe section, and the two second connecting seats are both arranged on one end of the first pipe section away from the second pipe section; A first connection hole and a second connection hole are formed on the first connection block, the first connection hole penetrates the first connection block along the axial direction of the first connection block, and the second connection hole penetrates the first connection block along the radial direction of the first connection block, so that the first connection hole and the second connection hole are arranged at a vertical angle; The first rotating shaft is passed through the first connecting hole, and two ends of the first rotating shaft are respectively connected to the two first mounting seats; The second rotating shaft is passed through the second connecting hole, and two ends of the second rotating shaft are respectively connected to the two first connecting seats; The second connection block is formed with a first through hole and a second through hole, wherein the first through hole penetrates the second connection block along the axial direction of the second connection block, and the second through hole penetrates the second connection block along the radial direction of the second connection block, so that the first through hole and the second through hole are arranged at a vertical angle; The first rotating shaft is inserted into the first through hole, and two ends of the first rotating shaft are respectively connected to the two second mounting seats; The second rotating shaft passes through the second through hole, and two ends of the second rotating shaft are respectively connected to the two second connecting seats.

[0009] Optionally, the lens holding mechanism further comprises a first magnetic portion; The first adsorption member is configured as a magnet, a mounting cavity is formed on the motion platform, one end of the mounting cavity is configured as an open end, and the other end is configured as a closed end, and the first magnetic part is connected to the mounting cavity; One end of the first adsorbent away from the indexing plate is inserted into the installation cavity through the open end and attracted to the first magnetic part; There are multiple first adsorbents, which are spaced apart along the circumference of the indexing plate. The number of the mounting cavities and the number of the magnetic parts correspond to the number of the first adsorbents.

[0010] Optionally, the fixing member includes a first fixing portion and a second fixing portion, and the insert assembly further includes a second adsorption member; The first fixing portion is arranged on a side of the indexing plate away from the first adsorption member, and the second fixing portion is rotatably connected to the side of the indexing plate away from the first adsorption member and has a closed position close to the first fixing portion and an open position away from the first fixing portion; The second adsorption member is installed on the indexing plate, and the second adsorption member is used to adsorb and fix the second fixing part to the indexing plate when the second fixing part is in the closed position; The first fixing portion is formed with a first slot capable of clamping the test lens, and the second fixing portion is formed with a second slot capable of clamping the test lens; In the closed position, the first card slot and the second card slot are arranged opposite to each other in the up-down direction; There are a plurality of first card slots, and the plurality of first card slots are arranged at intervals along the length direction of the first fixing portion and constitute a first card slot group; There are a plurality of the second card slots, and the plurality of the first card slots are arranged at intervals along the length direction of the first fixing portion to form a first card slot group.

[0011] Optionally, the second adsorption member includes a magnetic adsorption member; The second fixing part is made of magnetic material so that the second fixing part can be attracted to the magnetic adsorption part; or, a second magnetic part is provided on a side of the second fixing part close to the second card slot, and the second magnetic part can be attracted to the magnetic adsorption part.

[0012] Optionally, the image acquisition component includes a plurality of cameras; The multiple cameras are arranged on a side of the motion platform facing the frame body, and the multiple cameras are arranged at intervals along the circumference of the second through hole, and each camera is used to capture an image of the wearer's eyes.

[0013] Optionally, the trial glasses frame further comprises a control system; The position adjustment component and the pupil distance detection mechanism are both electrically connected to the control system.

[0014] The present disclosure also provides a method for vision detection, based on the above trial glasses frame, comprising the following steps: Step 1: using the pupil distance detection mechanism to capture and collect images of the wearer's eyes in real time, and calculating the distance between the pupil centers of the two eyes, i.e., the pupil distance, through the image processing algorithm in the control system; Step 2: Based on the measurement result provided by the pupil distance detection mechanism and the visual axis offset, the control system calculates the required position adjustment amount and converts it into a control instruction and sends it to the position adjustment component; Step 3: The control system adjusts the position of the insert assembly through the position adjustment assembly, and monitors the position of the insert assembly in real time through the position sensor and the angle sensor to ensure that the optical center of the test lens on the insert assembly is always aligned with the corresponding visual axis; Step 4: After the adjustment is completed, the control system starts the pupil distance detection mechanism again to recapture the image of the wearer's eyes to verify the adjustment effect; Step 5: According to the wearer's feedback and the analysis results of the control system, steps 1 to 4 are repeated to perform multiple iterations of optimization until the optical center of the test lens on the insert assembly is always aligned with the corresponding visual axis.

[0015] Through the above technical solution, through the cooperation between the provided wearing components and the nose frame, the entire trial glasses frame can be stably and comfortably worn on the wearer's head, so that the two frame bodies can be aligned and fit with the wearer's eyes.

[0016] Furthermore, since one end of the position adjustment component is connected to the frame body and the other end of the position adjustment component is detachably connected to the inserting piece component, the position of the inserting piece component in space (horizontally and vertically) can be adjusted by the position adjustment component, so that the position of the test lens on the inserting piece component can be adjusted relative to the frame body, such as moving left and right, up and down, or rotating, to compensate for the visual axis offset problem, thereby aligning the optical center of the test lens with the visual axis of the wearer's eyeball.

[0017] In addition, through the pupil distance detection mechanism, each image acquisition component can capture and collect images of the corresponding eye area to determine the position of the pupil center of each eye, and can calculate the distance between the pupil centers of the two eyes through the control system described below to accurately measure the wearer's pupil distance.

[0018] Based on the pupil distance data provided by the image acquisition component and the pre-recorded test lens data, the control system described below can dynamically adjust the test lens on the insert component by controlling the position adjustment component, so that the optical center of the test lens can always be aligned with the visual axis of the wearer. In other words, the control system described below can use the pre-recorded data, combined with the actual pupil distance value and the visual axis angle difference provided by the pupil distance detection mechanism, to dynamically adjust the position of the test lens to ensure that the optical center of the test lens is always aligned with the visual axis of the wearer. With this arrangement, during the ophthalmic examination, on the one hand, the wearer's visual experience can be significantly improved, and the blur caused by the visual axis offset can be avoided, thereby improving the accuracy of the glasses; on the other hand, the position of the test lens can be adjusted and aligned with the visual axis by the automated control system, so that the most suitable test lens configuration for the wearer can be found quickly and accurately, human errors can be reduced, and detection efficiency and accuracy can be improved.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present disclosure and constitute a part of the specification. They are used to explain the present disclosure together with the following detailed description, but do not constitute a limitation of the present disclosure.

[0021] In the attached picture: Figure 1 is a schematic structural diagram of a trial eyeglass frame provided by an exemplary embodiment of the present disclosure, wherein the second fixing portion is in a closed position; Figure 2 is a structural schematic diagram of a trial eyeglass frame provided by an exemplary embodiment of the present disclosure, wherein the second fixing portion is in an open position; Figure 3It is a structural schematic diagram of the connection between the frame body and the position adjustment assembly of the trial glasses frame provided by an exemplary embodiment of the present disclosure; Figure 4 It is a schematic structural diagram of the connection between a first universal joint, a second universal joint and a telescopic rod of a trial glasses frame provided by an exemplary embodiment of the present disclosure; Figure 5 is a structural schematic diagram of an insert assembly of a trial spectacles frame provided by an exemplary embodiment of the present disclosure at a first viewing angle, wherein the second fixing portion is in a closed position; Figure 6 is a structural schematic diagram of an insert assembly of a trial spectacles frame provided by an exemplary embodiment of the present disclosure at a second viewing angle, wherein the second fixing portion is in a closed position; Figure 7 is a structural schematic diagram of an inserting piece assembly of a trial spectacles frame provided by an exemplary embodiment of the present disclosure at a third viewing angle, wherein the second fixing portion is in an open position; Figure 8 It is a schematic structural diagram of a position adjustment assembly of a trial glasses frame provided in an exemplary embodiment of the present disclosure.

[0022] 10. lens holding mechanism; 11. lens frame; 111. first through hole; 12. position adjustment assembly; 121. motion platform; 122. parallel kinematic chain assembly; 1221. kinematic chain; 1222. telescopic rod; 12221. first pipe section; 12222. second pipe section; 1223. electric cylinder assembly; 123. second through hole; 124. first universal joint; 1241. first connecting block; 1242. first rotating shaft; 1243. second rotating shaft; 125. second universal joint; 1251. second connecting block; 1252. first rotating shaft; 1253. second rotating shaft; 126. first connecting block Seat; 127, second connecting seat; 128, mounting cavity; 13, insert assembly; 131, dividing plate; 132, fixing member; 1321, first fixing part; 1322, second fixing part; 1323, first card slot; 1324, second card slot; 133, third through hole; 134, second adsorption member; 135, second magnetic part; 14, first adsorption member; 15, first mounting seat; 16, second mounting seat; 20, nose bridge; 30, wearing assembly; 31, temple; 40, pupil distance detection mechanism; 41, image acquisition assembly; 411, camera; 50, position sensor; 51, angle sensor. DETAILED DESCRIPTION

[0023] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0024] In the description of the present disclosure, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, and a specific position structure and operation, and therefore cannot be understood as limiting the present disclosure, for example, see Figure 1 , Figure 1 The upper side of the drawing is the “up” side. Figure 1 The upper side of the drawing direction is the “lower” side, and “inside” and “outside” refer to the inside and outside of the corresponding structure contour. In addition, the terms “first”, “second”, etc. are only used to distinguish and describe, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0026] like Figures 1 to 8 As shown, the present disclosure provides a trial glasses frame, including two lens holding mechanisms 10, a nose bridge 20, a wearing component 30 and a pupil distance detection mechanism 40, each lens holding mechanism 10 includes a frame body 11, a position adjustment component 12 and an insert component 13, the two frame bodies 11 are arranged at intervals in the horizontal direction and connected by the nose bridge 20, one end of the position adjustment component 12 is connected to the frame body 11, and the insert component 13 is detachably connected to the other end of the position adjustment component 12, the insert component 13 is used to receive and insert a test lens, the position adjustment component 12 is configured to be able to adjust the position of the insert component 13 in the horizontal direction and the vertical direction so that the optical center of the test lens on the insert component 13 is aligned with the visual axis of the wearer's eyeball, the wearing component 30 includes two temples, and the two temples are respectively arranged on the outward side of the two frame bodies 11, and the pupil distance detection mechanism 40 includes two image acquisition components 41, and the two image acquisition components 41 are respectively arranged on the corresponding frame bodies 11.

[0027] Three points need to be explained. First, the visual axis refers to the imaginary straight line from the point of gaze through the node of the eye to the fovea, that is, the actual path that light enters the eye and eventually forms a clear image on the retina. The optical axis refers to the straight line that passes through the center of the cornea and the center of the lens and is perpendicular to these surfaces, that is, the theoretical axis when it is an ideal spherical lens. In a normal eye, the visual axis has an angular deviation of about 4°-5° relative to the optical axis, that is, the visual axis is actually located on the nasal side of the optical axis (that is, the side close to the nose), and there is a small angle between the visual axis and the optical axis. This angular difference indicates that the light does not enter the eye along the optical axis and directly reach the fovea, but enters the eye along the visual axis and focuses at the fovea. Therefore, this angle difference must be taken into account when testing vision to ensure the best visual correction effect.

[0028] Second, the human eyeball can perform complex three-dimensional movements in the eye socket. Specifically, the eyeball can rotate around three orthogonal axes (horizontal axis, vertical axis and front-to-back axis), allowing the eye to look in all directions. However, as the eyeball rotates, the visual axis will change position accordingly. For example, when we turn from looking straight ahead to looking to one side, the visual axis moves in the horizontal direction; and when we look up or down, the visual axis changes in the vertical direction. Therefore, when fitting glasses for the wearer, although the main focus is on the pupil distance and optical center alignment in the static state (i.e. looking straight ahead), when designing glasses for certain special purposes (such as progressive multifocal test lenses), it is also necessary to take into account the wearer's eye movement needs during daily activities to ensure a good visual experience in various sight directions.

[0029] Third, the relevant information (such as the position of the optical center, diopter, axis position, etc.) of the test lenses on the trial frames (test lenses used for optometry) is known. Therefore, before use, the optometrist or technician can enter the relevant information (such as the position of the optical center, diopter, axis position, etc.) of each pair of test lenses into the control system described below.

[0030] Through the above technical solution, through the cooperation between the wearing component 30 and the nose bridge 20, the entire trial glasses frame can be stably and comfortably worn on the wearer's head, so that the two frame bodies 11 can be aligned and fit with the wearer's eyes.

[0031] Furthermore, since one end of the position adjustment component 12 is connected to the frame body 11 and the other end of the position adjustment component 12 is detachably connected to the insert component 13, the position of the insert component 13 in space (horizontally and vertically) can be adjusted by the position adjustment component 12, so that the position of the test lens on the insert component 13 can be adjusted relative to the frame body 11, such as moving left and right, up and down, or rotating, to compensate for the visual axis offset problem, thereby aligning the optical center of the test lens with the wearer's eye visual axis.

[0032] In addition, through the pupil distance detection mechanism 40, each image acquisition component 41 can capture and collect images of the corresponding eye area to determine the position of the pupil center of each eye, and can calculate the distance between the pupil centers of the two eyes through the control system described below to accurately measure the wearer's pupil distance.

[0033] Based on the pupil distance data provided by the image acquisition component 41 and the pre-recorded test lens data, the control system described below can dynamically adjust the test lens on the insert component 13 by controlling the position adjustment component 12, so that the optical center of the test lens can always be aligned with the visual axis of the wearer. In other words, the control system described below can use the pre-recorded data, combined with the actual pupil distance value and the visual axis angle difference provided by the pupil distance detection mechanism 40, to dynamically adjust the position of the test lens to ensure that the optical center of the test lens is always aligned with the visual axis of the wearer. In this way, during the ophthalmic examination, on the one hand, the wearer's visual experience can be significantly improved, and the blur caused by the visual axis offset can be avoided, thereby improving the accuracy of the glasses; on the other hand, the test lens position can be adjusted and aligned with the visual axis by the automated control system, so that the test lens configuration that best suits the wearer can be found quickly and accurately, human errors can be reduced, and detection efficiency and accuracy can be improved.

[0034] In some examples, the wearing assembly 30 includes two elastic bands, hard Velcro and soft Velcro, the two elastic bands are respectively connected to the outward sides of the two frame bodies 11, one end of the two elastic bands away from the frame body 11 is provided with hard Velcro, and the other end of the two elastic bands away from the frame body 11 is provided with soft Velcro. The design of the elastic band and Velcro can make the wearing assembly 30 adapt to various head shapes and sizes, can reduce the pressure on the head, and can improve the wearing comfort.

[0035] As an implementation method, Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the lens holding mechanism 10 also includes a first suction member 14, the position adjustment assembly 12 includes a motion platform 121, a parallel motion chain assembly 122, a first universal joint 124 and a second universal joint 125, the insert assembly 13 includes a dividing plate 131 and a fixing member 132, the frame body 11 has a first surface and a second surface opposite to each other, a first through hole 111 penetrating the frame body 11 is formed in the middle of the frame body 11, the first surface is used to fit with the wearer's eyes, and the first through hole 111 is used for the wearer's eyes to pass through, the parallel motion chain assembly 122 includes three parallel motion chain 1221 groups, the three parallel motion chain 1221 groups are arranged three symmetrically along the circumference of the frame body 11, each parallel motion chain 1221 group includes two motion chains 1221, and one of each motion chain 1221 The end is movably connected to the second surface, the other end of each motion chain 1221 is movably connected to the motion platform 121, a second through hole 123 penetrating the motion platform 121 is formed in the middle of the motion platform 121, a third through hole 133 penetrating the dividing plate 131 is formed in the middle of the dividing plate 131, an axial position scale extending along the circumference of the third through hole 133 is provided on the dividing plate 131, a first adsorption member 14 is installed on the dividing plate 131, and the dividing plate 131 can be detachably connected to the side of the motion platform 121 away from the parallel motion chain assembly 122 through the first adsorption member 14, so that the central axis of the second through hole 123 can coincide with the central axis of the third through hole 133, a fixing member 132 is provided on the dividing plate 131, and the fixing member 132 is used to fix the test lens.

[0036] With such a design, the high flexibility of the parallel kinematic chain assembly 122 can be utilized to achieve fine adjustment of the insert assembly 13 in space, thereby accurately compensating for the visual axis offset problem and aligning the optical center of the test lens on the insert assembly 13 with the visual axis of the wearer. At the same time, through the design of the axis position scale on the indexing plate 131 and the first adsorbent 14, not only can the accurate positioning and rapid replacement of the test lens be facilitated, but also the operational convenience and practicality of the entire trial glasses frame can be improved.

[0037] As an implementation method, Figure 1 , Figure 4 and Figure 8As shown, the trial lens frame also includes a position sensor 50 and an angle sensor 51, the position adjustment component 12 also includes a first universal joint 124 and a second universal joint 125, the motion chain 1221 includes a telescopic rod 1222 and an electric cylinder group 1223, the connecting rod is configured as the telescopic rod 1222, the telescopic rod 1222 includes a first pipe segment 12221 and a second pipe segment 12222 sleeved on the first pipe segment 12221, the first pipe segment 12221 is slidably connected to the second pipe segment 12222, one end of the second pipe segment 12222 away from the first pipe segment 12221 is movably connected to the lens frame body 11 through the first universal joint 124, one end of the first pipe segment 12221 away from the second pipe segment 12222 is movably connected to the motion platform 121 through the second universal joint 125, and the electric cylinder group 1 223 is arranged on the outer wall of one end of the second pipe segment 12222 close to the lens frame 11, and the driving end of the electric cylinder group 1223 is transmission-connected with the first pipe segment 12221 so that the first pipe segment 12221 can move in the second pipe segment 12222, and the position sensor 50 is arranged on the first pipe segment 12221 to detect the position change of the first pipe segment 12221 relative to the second pipe segment 12222, and the angle sensor 51 is arranged on the motion platform 121 to detect the rotation angle or moving distance of the motion platform 121 relative to the lens frame 11, wherein the number of the first universal joints 124, the number of the second universal joints 125, the number of the position sensors 50, the number of the electric cylinder groups 1223 and the number of the telescopic rods 1222 correspond one to one.

[0038] The position sensor 50 is installed on the first tube segment 12221 to detect the position change of the first tube segment 12221 relative to the second tube segment 12222. This enables the control system described below to monitor and adjust the position of the test lens in real time.

[0039] The angle sensor 51 is installed on the motion platform 121 to detect the rotation angle or movement distance of the motion platform 121 relative to the lens frame 11. This helps to further improve the accuracy of the position adjustment of the test lens.

[0040] With such a configuration, the telescopic rod 1222 and the universal joint can be combined with an automated control system (including a position sensor 50 and an angle sensor 51) to achieve highly accurate adjustment of the position of the test lens. In this way, not only can the accuracy and efficiency of the glasses fitting process be improved, but also the visual experience of the wearer can be significantly improved. In this way, the trial glasses frame can dynamically adjust the position of the test lens according to the specific conditions of each wearer's eyes to ensure the best vision correction effect. In addition, human errors can be reduced, the detection speed can be accelerated, and the convenience and practicality of the overall operation can be improved.

[0041] As an implementation method, Figure 4As shown, the lens holding mechanism 10 further includes two first mounting seats 15 and two second mounting seats 16 which are arranged opposite to each other, the position adjustment assembly 12 further includes two first connecting seats 126 and two second connecting seats 127 which are arranged opposite to each other, the first universal joint 124 includes a first connecting block 1241, a first rotating shaft 1242 and a second rotating shaft 1243, the second universal joint 125 includes a second connecting block 1251, a first rotating shaft 1252 and a second rotating shaft 1253, the two first mounting seats 15 and the second rotating shaft 1254, and the two first mounting seats 15 and the second rotating shaft 1255 are provided. 5 are both arranged on the lens frame 11, the two second mounting seats 16 are both arranged on the motion platform 121, the two first connecting seats 126 are both arranged on one end of the second pipe section 12222 away from the first pipe section 12221, the two second connecting seats 127 are both arranged on one end of the first pipe section 12221 away from the second pipe section 12222, and the first connecting block 1241 is formed with a first connecting hole and a second connecting hole, the first connecting hole penetrates the first connecting block 1241 along the axial direction of the first connecting block 1241, and the second connecting hole The first connecting block 1241 is penetrated along the radial direction of the first connecting block 1241 so that the first connecting hole and the second connecting hole are arranged at a vertical angle. The first rotating shaft 1242 is penetrated in the first connecting hole, and the two ends of the first rotating shaft 1242 are respectively connected to the two first mounting seats 15. The second rotating shaft 1243 is penetrated in the second connecting hole, and the two ends of the second rotating shaft 1243 are respectively connected to the two first connecting seats 126. The second connecting block 1251 is formed with a first through hole and a second through hole. The first through hole The hole penetrates the second connecting block 1251 along the axial direction of the second connecting block 1251, and the second through hole penetrates the second connecting block 1251 along the radial direction of the second connecting block 1251, so that the first through hole and the second through hole are set at a vertical angle, the first rotating shaft 1252 is passed through the first through hole, and the two ends of the first rotating shaft 1252 are respectively connected to the two second mounting seats 16, the second rotating shaft 1253 is passed through the second through hole, and the two ends of the second rotating shaft 1253 are respectively connected to the two second connecting seats 127.

[0042] The first connecting block 1241 can be connected to the first mounting seat 15 on the frame body 11 and the first connecting seat 126 on the telescopic rod 1222 respectively through the first rotating shaft 1242 and the second rotating shaft 1243, thereby achieving multi-directional rotational freedom.

[0043] The second connecting block 1251 can be connected to the second mounting seat 16 on the motion platform 121 and the second connecting seat 127 on the telescopic rod 1222 through the first rotating shaft 1252 and the second rotating shaft 1253 respectively, which also provides multi-directional rotational freedom.

[0044] Among them, by utilizing the dual-axis rotation mechanism of the first universal joint 124 and the second universal joint 125 , the telescopic rod 1222 can be flexibly adjusted in multiple directions, thereby achieving precise control of the position of the insert assembly 13 .

[0045] Specifically, first, before starting the adjustment, the trial frame can be placed in an initial state, that is, the frame body 11 and the motion platform 121 are parallel to the wearer's eyes, and the central axes of the first through hole 111, the second through hole 123 and the third through hole 133 coincide.

[0046] Secondly, the image acquisition component 41 in the pupil distance detection mechanism 40 can be used to capture the pupil centers of the wearer's eyes and calculate the actual pupil distance.

[0047] Then, for horizontal adjustment, when it is found that the test lens on one side is offset relative to the visual axis, adjustment can be made by increasing or decreasing the length of the corresponding telescopic rod 1222. For example, when the test lens of the right eye needs to be moved inward, the two corresponding telescopic rods 1222 on the right side can be shortened, and vice versa.

[0048] The vertical adjustment can be accomplished by changing the length of the top or bottom telescopic rod 1222. When the test lens needs to be moved upward, the length of the top telescopic rod 1222 can be shortened; when the test lens needs to be moved downward, the length of the bottom telescopic rod 1222 can be shortened.

[0049] For adjusting the rotation angle, when rotation around the horizontal axis is required (e.g., to compensate for the visual axis deviation of the wearer's eyeball), the length of the two telescopic rods 1222 on one side (e.g., the upper side) can be increased, and the length of the two telescopic rods 1222 on the opposite side (lower side) can be reduced. This can generate a torque on the motion platform 121, so that the motion platform 121 rotates around the horizontal axis to the required angle. Similarly, when rotation around the vertical axis is required, the length of the front and rear telescopic rods 1222 can be adjusted.

[0050] Then, according to the sensor feedback (such as the angle sensor 51), the top and bottom telescopic rods 1222 are slightly adjusted to ensure that no additional up and down movement or tilting occurs. In combination with the position sensor 50 installed on the motion platform 121, the angle of rotation or the distance of movement of the motion platform 121 relative to the frame body 11 is detected, thereby further improving the accuracy of the position adjustment.

[0051] Finally, after completing the initial adjustments, a simple visual test is conducted to allow the wearer to try the visual effects under different sight directions to check for blur or other discomfort. Based on the wearer's feedback, some parameters can be fine-tuned until the best visual experience is achieved.

[0052] Such an arrangement can effectively align the optical center of the test lens on the motion platform 121 with the visual axis of the wearer, thereby providing a more accurate vision correction effect. In this way, not only the accuracy of the glasses can be improved, but also the comfort and satisfaction of the wearer can be enhanced.

[0053] It should be noted that the position adjustment of the motion platform 121 is a small adjustment, which can avoid obstruction of the wearer's vision.

[0054] Optionally, the telescopic rod 1222 may be made of a transparent material, such as polycarbonate or acrylic. The transparent telescopic rod 1222 may minimize interference with the wearer's line of sight and help maintain the wearer's natural visual experience. Moreover, transparent materials are lighter than metal materials, which helps reduce the weight of the device and improves wearing comfort.

[0055] As an implementation method, Figure 1 , Figure 3 , Figure 5 As shown, the lens holding mechanism 10 also includes a first magnetic portion, the first adsorption member 14 is constructed as a magnet, an installation cavity 128 is formed on the moving platform 121, one end of the installation cavity 128 is set as an open end, and the other end is set as a closed end, the first magnetic portion is connected to the installation cavity 128, and the end of the first adsorption member 14 away from the dividing plate 131 is inserted into the installation cavity 128 through the open end and attracts each other with the first magnetic portion, wherein the number of first adsorption members 14 is multiple, and the multiple first adsorption members 14 are arranged at intervals along the circumference of the dividing plate 131, and the number of installation cavities 128, the number of magnetic portions and the number of first adsorption members 14 correspond one to one.

[0056] The installation cavity 128 can play a guiding role, that is, the first adsorbent 14 moves along a predetermined path (the extension direction of the installation cavity 128) during the insertion process so that the first adsorbent 14 is accurately aligned with the first magnetic part. This guiding mechanism can not only help reduce the need for manual adjustment and improve assembly efficiency, but also effectively prevent the first adsorbent 14 from being offset or tilted during the insertion process.

[0057] Among them, a plurality of first adsorption members 14 are arranged at intervals along the circumference of the dividing plate 131 to evenly distribute the attraction force, so that the dividing plate 131 can be firmly fixed on the motion platform 121 to prevent deviation or tilt.

[0058] There is a one-to-one correspondence between the number of mounting cavities 128, the number of first magnetic parts, and the number of first adsorbents 14. This means that each first adsorbent 14 has a corresponding mounting cavity 128 and first magnetic part, ensuring the stability and accuracy of the connection.

[0059] Specifically, when the insert assembly 13 needs to be installed, the indexing plate 131 can be first moved close to the motion platform 121 so that each first adsorbing member 14 can be aligned with the open end of the corresponding installation cavity 128. Then the indexing plate 131 is pushed forward so that all the first adsorbing members 14 can be inserted into the corresponding installation cavity 128 in turn and attract each other with the first magnetic part, completing the connection between the indexing plate 131 and the motion platform 121. When the insert assembly 13 needs to be disassembled, the indexing plate 131 and the motion platform 121 can be quickly operated by gently separating the indexing plate 131 and the motion platform 121.

[0060] As an implementation method, Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the fixing member 132 includes a first fixing portion 1321 and a second fixing portion 1322, and the insert assembly 13 also includes a second adsorbing member 134. The first fixing portion 1321 is arranged on the side of the indexing plate 131 away from the first adsorbing member 14, and the second fixing portion 1322 is rotatably connected to the side of the indexing plate 131 away from the first adsorbing member 14 and has a closed position close to the first fixing portion 1321 and an open position away from the first fixing portion 1321. The second adsorbing member 134 is installed on the indexing plate 131, and the second adsorbing member 134 is used to adsorb and fix the second fixing portion 1322 to the indexing plate 1 when the second fixing portion 1322 is in the closed position. 31, a first card slot 1323 capable of clamping the test lens is formed on the first fixing portion 1321, and a second card slot 1324 capable of clamping the test lens is formed on the second fixing portion 1322. In the closed position, the first card slot 1323 and the second card slot 1324 are arranged opposite to each other in the up-and-down direction, wherein there are a plurality of first card slots 1323, which are arranged at intervals along the length direction of the first fixing portion 1321 and constitute a first card slot 1323 group, and there are a plurality of second card slots 1324, which are arranged at intervals along the length direction of the first fixing portion 1321 and constitute a first card slot 1323 group.

[0061] Specifically, when the second fixing part 1322 is in the open position, the test lens can be placed in the first clamping groove 1323 of the first fixing part 1321, and the second fixing part 1322 is closed to move the second fixing part 1322 to the closed position. At this time, the second clamping groove 1324 on the second fixing part 1322 and the first clamping groove 1323 of the first fixing part 1321 are arranged opposite to each other in the up-down direction to clamp the test lens together. The second fixing part 1322 in the closed position can be firmly adsorbed and fixed on the indexing plate 131 by the second adsorbing member 134, thereby preventing the second fixing part 1322 from accidentally opening or loosening.

[0062] The design of the plurality of first slots 1323 and second slots 1324 can provide flexibility and can accommodate test lenses of different thicknesses and shapes. For example, the wearer may need to correct both myopia and astigmatism, in which case a spherical test lens (for correcting myopia or hyperopia) and a cylindrical test lens (for correcting astigmatism) can be used in combination.

[0063] As an implementation manner, the second adsorption member 134 includes a magnetic adsorption member, and the second fixing portion 1322 is made of a magnetic material so that the second fixing portion 1322 can be attracted to the magnetic adsorption member.

[0064] By using the magnetic adsorption member and the second fixing portion 1322 made of magnetic material, this design can not only achieve efficient fixation of the test lens, but also greatly simplify the operation process, thereby improving the convenience and reliability of use.

[0065] As another embodiment, Figure 6 to Figure 7 As shown, a second magnetic portion 135 is disposed on one side of the second fixing portion 1322 close to the second locking slot 1324 , and the second magnetic portion 135 can attract the magnetic adsorption component.

[0066] By arranging the second magnetic part 135 on one side of the second fixing part 1322 close to the second card slot 1324 and making it attract the magnetic adsorption part, this design can not only improve the reliability and stability of the test lens fixation, but also simplify the operation process and enhance the user experience.

[0067] To ensure full coverage of the eye area, as an implementation method, Figure 8 As shown, the image acquisition component 41 includes a plurality of cameras 411, which are arranged on a side of the motion platform 121 facing the frame body 11, and the plurality of cameras 411 are arranged circumferentially at intervals along the second through hole 123, and each camera 411 is used to capture an image of the wearer's eyes.

[0068] The multiple cameras 411 work simultaneously to capture images of the wearer's eyes from different angles, thereby achieving all-round image acquisition of the wearer's eyes, thereby improving measurement accuracy.

[0069] In order to realize automation and precise control of the entire measurement process, as an implementation mode, the trial glasses frame further includes a control system, and the position adjustment component 12 and the pupil distance detection mechanism 40 are electrically connected to the control system.

[0070] Among them, the control system may include hardware parts such as microprocessor, memory, communication interface, etc., as well as software parts for image processing, data analysis and control logic.

[0071] The working principle of the trial glasses frame provided by the present disclosure can be: multiple cameras 411 simultaneously capture images of the wearer's eyes from different angles, and these image data are transmitted to the control system for processing. The control system uses image processing algorithms (such as edge detection, template matching, etc.) to analyze the pupil center position of each eye and calculate the distance between the pupil centers of the two eyes (i.e., the pupil distance). Based on the measurement results of the pupil distance and the visual axis offset, the control system calculates the amount of position adjustment required. For example, if it is found that the position of the optical center of the test lens on one side is offset relative to the visual axis, the control system will calculate the corresponding change in the length of the telescopic rod 1222. The control system converts the calculated adjustment amount into a specific control instruction and sends it to the position adjustment component 12. For example, increase or decrease the length of a specific telescopic rod 1222 to adjust the position of the test lens. The position adjustment component 12 makes corresponding adjustments according to the received control instructions. The electric cylinder group 1223 combines the angle sensor 51 and the position sensor 50 to drive the telescopic rod 1222 to make precise length changes, and the universal joint provides multi-directional flexibility to ensure that the test lens can be accurately moved and rotated in three-dimensional space. After the adjustment is completed, the control system can start the pupil distance detection mechanism 40 again to recapture the image of the wearer's eyes to verify the adjustment effect. If further fine-tuning is required, the control system can repeat the above steps until the best visual effect is achieved. Then, the wearer can try the visual effect under different sight directions to check whether there is blur or other discomfort. Finally, based on the wearer's feedback, the control system can make the final fine-tuning to ensure that the wearer has the most comfortable visual experience.

[0072] like Figures 1 to 6 As shown, the present disclosure also provides a vision detection method based on the above trial glasses frame, comprising the following steps: Step 1: using the pupil distance detection mechanism 40 to capture and collect images of the wearer's eyes in real time, and calculating the distance between the pupil centers of the two eyes, i.e., the pupil distance, through the image processing algorithm in the control system; Step 2: Based on the measurement result provided by the pupil distance detection mechanism 40 and the visual axis offset, the control system calculates the required position adjustment amount and converts it into a control command and sends it to the position adjustment component 12; Step 3: The control system adjusts the position of the insert assembly 13 through the position adjustment assembly 12, and monitors the position of the insert assembly 13 in real time through the position sensor 50 and the angle sensor 51 to ensure that the optical center of the test lens on the insert assembly 13 is always aligned with the corresponding visual axis; Step 4: After the adjustment is completed, the control system starts the pupil distance detection mechanism 40 again to recapture the image of the wearer's eyes to verify the adjustment effect; Step 5: According to the wearer's feedback and the analysis results of the control system, repeat steps 1 to 4 and perform multiple iterations of optimization until the optical center of the test lens on the insert assembly 13 is always aligned with the corresponding visual axis.

[0073] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0074] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0075] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A trial glasses frame, characterized in that: It comprises two lens holding mechanisms (10), a nose frame (20), a wearing component (30) and a pupil distance detection mechanism (40); Each of the lens holding mechanisms (10) comprises a lens frame (11), a position adjustment component (12) and an inserting component (13); the two lens frames (11) are arranged at intervals in the horizontal direction and are connected via the nose bridge (20); one end of the position adjustment component (12) is connected to the lens frame (11); the inserting component (13) is detachably connected to the other end of the position adjustment component (12); the inserting component (13) is used to receive and insert a test lens; the position adjustment component (12) is configured to be able to adjust the position of the inserting component (13) in the horizontal and vertical directions so that the optical center of the test lens on the inserting component (13) is aligned with the visual axis of the wearer's eyeball; The wearing assembly (30) comprises two temples, and the two temples are respectively arranged on the outward-facing sides of two mirror frames (11); The pupil distance detection mechanism (40) comprises two image acquisition components (41), and the two image acquisition components (41) are respectively arranged on the corresponding lens frame (11).

2. The trial glasses frame according to claim 1, characterized in that: The lens holding mechanism (10) further comprises a first suction member (14); the position adjustment assembly (12) comprises a motion platform (121) and a parallel motion chain assembly (122); and the insert assembly (13) comprises a dividing plate (131) and a fixing member (132); The spectacles frame (11) has a first surface and a second surface opposite to each other, a first through hole (111) penetrating the spectacles frame (11) is formed in the middle of the spectacles frame (11), the first surface is used to fit against the eyes of a wearer, and the first through hole (111) is used for the wearer's eyes to pass through; The parallel kinematic chain assembly (122) comprises three parallel kinematic chain (1221) groups, the three parallel kinematic chain (1221) groups are arranged trisymmetrically along the circumference of the frame body (11), each parallel kinematic chain (1221) group comprises two kinematic chains (1221), one end of each kinematic chain (1221) is movably connected to the second surface, and the other end of each kinematic chain (1221) is movably connected to the motion platform (121); A second through hole (123) penetrating the motion platform (121) is formed in the middle of the motion platform (121); a third through hole (133) penetrating the indexing plate (131) is formed in the middle of the indexing plate (131); an axial position scale extending along the circumference of the third through hole (133) is provided on the indexing plate (131); the first adsorption member (14) is mounted on the indexing plate (131); the indexing plate (131) can be detachably connected to a side of the motion platform (121) away from the parallel motion chain assembly (122) via the first adsorption member (14), so that the central axis of the second through hole (123) can coincide with the central axis of the third through hole (133); The fixing member (132) is arranged on the indexing plate (131), and the fixing member (132) is used to fix the test lens.

3. The trial glasses frame according to claim 2, characterized in that: The trial lens frame further comprises a position sensor (50) and an angle sensor (51); the position adjustment assembly (12) further comprises a first universal joint (124) and a second universal joint (125); and the kinematic chain (1221) comprises a telescopic rod (1222) and an electric cylinder group (1223); The telescopic rod (1222) comprises a first tube section (12221) and a second tube section (12222) sleeved on the first tube section (12221); the first tube section (12221) is slidably connected in the second tube section (12222); an end of the second tube section (12222) away from the first tube section (12221) is movably connected to the mirror frame (11) via the first universal joint (124); and an end of the first tube section (12221) away from the second tube section (12222) is movably connected to the motion platform (121) via the second universal joint (125); The electric cylinder group (1223) is arranged on an outer side wall of one end of the second pipe section (12222) close to the mirror frame (11), and a driving end of the electric cylinder group (1223) is drivingly connected to the first pipe section (12221) so that the first pipe section (12221) can move inside the second pipe section (12222); The position sensor (50) is arranged on the first pipe section (12221) to detect a position change of the first pipe section (12221) relative to the second pipe section (12222); The angle sensor (51) is arranged on the motion platform (121) and is used to detect the rotation angle or movement distance of the motion platform (121) relative to the lens frame (11); The number of the first universal joints (124), the number of the second universal joints (125), the number of the position sensors (50), the number of the electric cylinder groups (1223), and the number of the telescopic rods (1222) correspond one to one.

4. The trial glasses frame according to claim 3, characterized in that: The lens holding mechanism (10) further comprises two first mounting seats (15) arranged opposite to each other and two second mounting seats (16) arranged opposite to each other; the position adjustment assembly (12) further comprises two first connecting seats (126) arranged opposite to each other and two second connecting seats (127) arranged opposite to each other; the first universal joint (124) comprises a first connecting block (1241), a first rotating shaft (1242) and a second rotating shaft (1243); and the second universal joint (125) comprises a second connecting block (1251), a first rotating shaft (1252) and a second rotating shaft (1253); The two first mounting seats (15) are both arranged on the mirror frame (11), the two second mounting seats (16) are both arranged on the motion platform (121), the two first connecting seats (126) are both arranged on an end of the second pipe section (12222) away from the first pipe section (12221), and the two second connecting seats (127) are both arranged on an end of the first pipe section (12221) away from the second pipe section (12222); A first connection hole and a second connection hole are formed on the first connection block (1241), the first connection hole penetrating the first connection block (1241) along the axial direction of the first connection block (1241), and the second connection hole penetrating the first connection block (1241) along the radial direction of the first connection block (1241), so that the first connection hole and the second connection hole are arranged at a vertical angle; The first rotating shaft (1242) is inserted into the first connecting hole, and two ends of the first rotating shaft (1242) are respectively connected to the two first mounting seats (15); The second rotating shaft (1243) is inserted into the second connecting hole, and two ends of the second rotating shaft (1243) are respectively connected to the two first connecting seats (126); A first through hole and a second through hole are formed on the second connecting block (1251), the first through hole penetrating the second connecting block (1251) along the axial direction of the second connecting block (1251), and the second through hole penetrating the second connecting block (1251) along the radial direction of the second connecting block (1251), so that the first through hole and the second through hole are arranged at a vertical angle; The first rotating shaft (1252) is inserted into the first through hole, and two ends of the first rotating shaft (1252) are respectively connected to the two second mounting seats (16); The second rotating shaft (1253) is inserted into the second through hole, and two ends of the second rotating shaft (1253) are respectively connected to the two second connecting seats (127).

5. The trial glasses frame according to any one of claims 2 to 4, characterized in that: The lens holding mechanism (10) further comprises a first magnetic portion; The first adsorption member (14) is configured as a magnet, a mounting cavity (128) is formed on the motion platform (121), one end of the mounting cavity (128) is configured as an open end, and the other end is configured as a closed end, and the first magnetic part is connected to the mounting cavity (128); An end of the first adsorption member (14) away from the indexing plate (131) is inserted into the installation cavity (128) through the open end and is attracted to the first magnetic part; There are a plurality of first adsorption members (14), the plurality of first adsorption members (14) are arranged at intervals along the circumference of the indexing plate (131), and the number of the mounting cavities (128), the number of the magnetic portions and the number of the first adsorption members (14) correspond one to one.

6. The trial glasses frame according to any one of claims 2 to 4, characterized in that: The fixing member (132) comprises a first fixing portion (1321) and a second fixing portion (1322); the insert assembly (13) further comprises a second adsorption member (134); The first fixing portion (1321) is arranged on a side of the indexing plate (131) facing away from the first adsorption member (14), and the second fixing portion (1322) is rotatably connected to a side of the indexing plate (131) facing away from the first adsorption member (14) and has a closed position close to the first fixing portion (1321) and an open position away from the first fixing portion (1321); The second adsorption member (134) is mounted on the indexing plate (131), and the second adsorption member (134) is used to adsorb and fix the second fixing portion (1322) to the indexing plate (131) when the second fixing portion (1322) is in the closed position; The first fixing portion (1321) is formed with a first slot (1323) capable of clamping the test lens, and the second fixing portion (1322) is formed with a second slot (1324) capable of clamping the test lens; In the closed position, the first card slot (1323) and the second card slot (1324) are arranged opposite to each other in the up-down direction; There are a plurality of first card slots (1323), and the plurality of first card slots (1323) are arranged at intervals along the length direction of the first fixing portion (1321) and constitute a first card slot (1323) group; There are a plurality of the second card slots (1324), and the plurality of the first card slots (1323) are arranged at intervals along the length direction of the first fixing portion (1321) to form a first card slot (1323) group.

7. The trial glasses frame according to claim 6, characterized in that: The second adsorption member (134) comprises a magnetic adsorption member; The second fixing portion (1322) is made of a magnetic material so that the second fixing portion (1322) can be attracted to the magnetic adsorption component; or, a second magnetic portion (135) is provided on a side of the second fixing portion (1322) close to the second slot (1324), and the second magnetic portion (135) can be attracted to the magnetic adsorption component.

8. The trial glasses frame according to any one of claims 2 to 4, characterized in that: The image acquisition component (41) comprises a plurality of cameras (411); The plurality of cameras (411) are arranged on a side of the motion platform (121) facing the spectacles frame (11), the plurality of cameras (411) are arranged at intervals along the circumference of the second through hole (123), and each of the cameras (411) is used to capture an image of the wearer's eyes.

9. The trial glasses frame according to claim 8, characterized in that: The trial glasses frame also includes a control system; The position adjustment component (12) and the pupil distance detection mechanism (40) are both electrically connected to the control system.

10. A method for visual acuity detection, characterized in that: The trial glasses frame according to any one of claims 1 to 9 comprises the following steps: Step 1: using the pupil distance detection mechanism (40) to capture and collect images of the wearer's eyes in real time, and using the image processing algorithm in the control system to calculate the distance between the pupil centers of the two eyes, i.e., the pupil distance; Step 2: Based on the measurement result provided by the pupil distance detection mechanism (40) and the visual axis offset, the control system calculates the required position adjustment amount and converts it into a control command and sends it to the position adjustment component (12); Step 3: the control system adjusts the position of the inserting component (13) through the position adjustment component (12), and monitors the position of the inserting component (13) in real time through the position sensor (50) and the angle sensor (51), so as to ensure that the optical center of the test lens on the inserting component (13) is always aligned with the corresponding visual axis; Step 4: After the adjustment is completed, the control system starts the pupil distance detection mechanism (40) again to recapture the image of the wearer's eyes to verify the adjustment effect; Step 5: Repeat steps 1 to 4 according to the wearer's feedback and the analysis results of the control system, and perform multiple iterations of optimization until the optical center of the test lens on the insert assembly (13) is always aligned with the corresponding visual axis.

Images