Optometry unit

Abstract

The utility model discloses an optometry unit which comprises a shell provided with a detection port respectively communicated with an accommodating space and the outside; a driving member; the lens assembly comprises a first lens and a second lens, the driving part respectively drives the first lens and the second lens to move, and zooming is realized by adjusting the overlapping degree of the first lens and the second lens; and the display is arranged on the shell and is used for displaying optometry information. The optometry unit has the advantages of being convenient to observe optometry information, convenient to operate and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of optometry, more particularly to an optometry instrument. BACKGROUND

[0002] With the popularity of electronic products, the number of people with vision problems is increasing as people spend more time looking at electronic screens. The traditional optometry process usually requires patients to go to a professional ophthalmic clinic or hospital and be examined by a professional optometrist using complex equipment. This process is not only time-consuming, but also extremely inconvenient for people with limited mobility or living in remote areas. With the advancement of technology and the growing demand for convenient medical care, it is particularly important to develop a handheld device that can quickly and accurately detect the refractive state of individuals at home. However, existing vision detectors usually use manual lens adjustment to detect vision, which has the disadvantage of being difficult to operate and not easy to obtain optometry information in a timely manner, making it difficult for vision detectors to be popularized. SUMMARY

[0003] One purpose of the utility model is to provide an optometry instrument that can at least solve one of the technical problems of the optometry instrument in the prior art, which is not conducive to viewing optometry information and is inconvenient to operate.

[0004] To achieve the above purpose, the utility model provides the following technical scheme.

[0005] According to the optometry instrument of the first aspect of the utility model, the optometry instrument comprises: a shell, the shell has a receiving space inside, and a detection port is formed in the shell and communicates with the receiving space and the outside; a driving member is installed in the receiving space; a lens assembly is installed in the receiving space, the lens assembly comprises a first lens and a second lens, and the driving member drives the first lens and the second lens to be movable, and the overlap of the first lens and the second lens is adjusted to zoom; and a display is arranged on the shell and used to display optometry information.

[0006] Optionally, the optometry instrument further comprises a transmission assembly installed in the receiving space, the transmission assembly comprises a plurality of transmission gears and first and second lead screws, the transmission gears are meshed with each other, one of the transmission gears is connected with the power output end of the driving member, the first and second lead screws are arranged in parallel and extend in a first direction, the first lead screw is connected with one of the transmission gears and driven to rotate by the transmission gear, the second lead screw is connected with another one of the transmission gears and driven to rotate by the transmission gear, the overlap of the first and second lenses is adjusted so that the diopter changes in the range of -12.00D to +6.00D, and increases or decreases by 0.25D every time.

[0007] Optionally, the transmission assembly further comprises a sliding block, the sliding block is installed on the first screw rod or the second screw rod, and the sliding block is connected with the first lens or the second lens.

[0008] Optionally, the optometry device further comprises a guide member, the guide member is installed on the receiving space and is parallel to the first screw rod and the second screw rod, and the guide member is connected with the first lens or the second lens to guide movement of the first lens or the second lens.

[0009] Optionally, the optometry device further comprises a sealing member, the sealing member is detachably installed on the detection opening.

[0010] Optionally, the optometry device further comprises a connecting member, the connecting member is a flexible member, one end of the connecting member is connected with the shell, and the other end of the connecting member is connected with the sealing member.

[0011] Optionally, the optometry device further comprises a mounting bracket, the mounting bracket is installed on the receiving space, the mounting bracket has a movement space inside, the lens assembly is installed in the movement space, a size of the movement space in the first direction is greater than sizes of the first lens and the second lens, and the mounting bracket is provided with a mounting through hole to pass through the first screw rod and the second screw rod.

[0012] Optionally, the mounting bracket comprises a first side plate and a second side plate, the first side plate and the second side plate are distributed apart along a second direction; a third side plate and a fourth side plate, the third side plate and the fourth side plate are distributed apart along the first direction, and the third side plate and the fourth side plate are provided with the mounting through hole.

[0013] Optionally, the mounting bracket further comprises a first cylinder body and a second cylinder body, the first cylinder body is installed on an outer side of the first side plate and extends along the first direction, the first cylinder body has a first channel, and one end of the first channel is opposite to the lens assembly; the second cylinder body is installed on an outer side of the second side plate and extends along the first direction, the second cylinder body has a second channel, and one end of the second channel is opposite to the lens assembly.

[0014] Optionally, the shell is provided with a charging interface, and the optometry device further comprises a power supply module, the power supply module is installed on the receiving space and is electrically connected with the driving member, and the power supply module is charged through the charging interface.

[0015] The utility model embodiment provides a kind of optometry convenient operation and viewing detection information, so that non-professional person also can easily complete self optometry at home, to save time and cost.The optometry of the utility model embodiment is combined by adopting shell, driving element, lens assembly and display, the driving mode of first lens and second lens adopts driving element drive, relative to traditional manual zoom, improve the convenience of zooming;And, first lens and second lens can be moved respectively, can expand focusing range.

[0016] Other features of the utility model and its advantages will become clear from the following detailed description of exemplary embodiments of the utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings incorporated in and forming a part of the specification, illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model.

[0018] Figure 1 It is the explosion map of optometry according to an embodiment of the utility model;

[0019] Figure 2 It is the partial explosion map of optometry according to an embodiment of the utility model;

[0020] Figure 3 It is the partial explosion map of optometry according to an embodiment of the utility model;

[0021] Figure 4 It is the partial explosion map of optometry according to an embodiment of the utility model;

[0022] Figure 5 It is the three-dimensional schematic view of intelligent handheld optometry according to an embodiment of the utility model.

[0023] REFERENCE NUMERALS

[0024] Optometry 100;

[0025] Shell 10;Receiving space 11;Detection port 12;First shell 13;Second shell 14;

[0026] Light source 21;Sensor 22;

[0027] Mounting bracket 30;Mounting channel 31;First side plate 32;Second side plate 33;Third side plate 34;Fourth side plate 35;Mounting through hole 36;

[0028] Driving element 40;

[0029] Lens assembly 50;First lens 51;Groove 511;Second lens 52;

[0030] Transmission assembly 60; transmission gear 61; first lead screw 621; second lead screw 622; slider 63;

[0031] Guide component 70;

[0032] First cylinder 81; First channel 811;

[0033] Second cylinder 82; Second channel 821;

[0034] Flexible component 91; sealing component 92; connecting component 93; flange 94; switch button 951; adjustment button 952; power module 96; charging interface 97; bracket 98; first PCB board 991; second PCB board 992. Detailed Implementation

[0035] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0036] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0037] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0038] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0040] The optometer 100 according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0041] like Figures 1 to 5 As shown, the optometry device 100 according to an embodiment of the present utility model includes: a housing 10, a drive unit 40, a lens assembly 50 and a display 99, wherein the housing 10 can serve as a cylindrical body and can be used as the main frame of the optometry device 100.

[0042] Specifically, the housing 10 has a receiving space 11 therein, the housing 10 is provided with a detection port 12 which respectively communicates with the receiving space 11 and the outside, and the driving member 40 is installed in the receiving space 11. The lens assembly 50 is installed in the receiving space 11, the lens assembly 50 comprises a first lens 51 and a second lens 52, the driving member 40 drives the first lens 51 and the second lens 52 to be movable respectively, the overlapping degree of the first lens 51 and the second lens 52 is adjusted to zoom, and the display 99 is arranged on the housing 10 and is used to display optometry information.

[0043] In other words, the optometry instrument 100 according to the embodiment of the present application mainly comprises the housing 10, the driving member 40, the lens assembly 50 and the display 99, the housing 10 has the receiving space 11 therein, the light source 21, the mounting frame 30, the driving member 40 and the lens assembly 50 etc. can be installed in the receiving space 11, the housing 10 is provided with the detection port 12 which respectively communicates with the receiving space 11 and the outside, and the lens assembly 50 can correspond to the detection port 12 and the light source 21 etc. In the embodiment, the housing 10 can play the roles of waterproof, dustproof and accommodation.

[0044] The driving member 40 such as a micro motor is installed in the receiving space 11, the driving member 40 can provide driving force to drive the lens in the ocular lens to move. The driving member 40 can be directly or indirectly connected to the lens assembly 50 which comprises the first lens 51 and the second lens 52, and the lens assembly 50 can realize the function of the automatic zoom ocular lens. For example, the first lens 51 and the second lens 52 are free-form lenses, and the zoom is realized by the free-form lenses, which is quite different from the traditional convex lens. In the embodiment, the driving member 40 can be one or two, that is, one driving member 40 can be used to drive the first lens 51 and the second lens 52 to move simultaneously, for example, through the transmission assembly 60 etc., or two driving members 40 can be used to drive the first lens 51 and the second lens 52 to move simultaneously. In the embodiment, the first lens 51 and the second lens 52 can be movable respectively, which can expand the flexibility and range of focusing, and solve the technical problems such as narrow focusing range caused by the movable single lens in the prior art.

[0045] In addition, the display 99 is arranged on the housing 10 and is electrically connected to the sensor 22, the display 99 can display the vision detection result, which is convenient for the user to watch. The display 99 can comprise a liquid crystal display screen, and can be used to display the final optometry result (dioptric power) and operation prompt information etc.

[0046] Therefore, the optometry instrument 100 provided by the embodiment of the present application is convenient to operate and check detection information, and thus non-professionals can easily complete self-optometry at home, thereby saving time and cost. The optometry instrument 100 of the embodiment of the present application is combined with the shell 10, the driving member 40, the lens assembly 50 and the display 99, the driving mode of the first lens 51 and the second lens 52 is driven by the driving member 40, and compared with the traditional manual zooming, the convenience of zooming is improved; and the first lens 51 and the second lens 52 can be moved respectively, and the focusing range can be expanded.

[0047] According to an embodiment of the present application, the optometry instrument 100 further comprises a transmission assembly 60, the transmission assembly 60 is installed in the accommodation space 11, the transmission assembly 60 comprises a plurality of transmission gears 61 and a first lead screw 621 and a second lead screw 622, the transmission gears 61 are engaged with each other, one of the transmission gears 61 is connected with the power output end of the driving member 40, the first lead screw 621 and the second lead screw 622 are arranged in parallel with each other and extend along the first direction, the first lead screw 621 is connected with one of the transmission gears 61 and is driven to rotate by the transmission gear 61, the second lead screw 622 is connected with another transmission gear 61 and is driven to rotate by the transmission gear 61, the overlapping degree of the first lens 51 and the second lens 52 is adjusted, so that the dioptric power changes in the range of-12.00D to +6.00D, and increases or decreases by 0.25D every time.

[0048] That is to say, the transmission assembly 60 is also installed in the accommodation space 11, the transmission assembly 60 is connected with the driving member 40 and the lens assembly 50 respectively, the driving member 40 can indirectly connect the lens assembly 50, and the transmission assembly 60 can transmit driving force to the lens assembly 50. It can be seen that the transmission assembly 60 can transmit driving force, the driving force of the driving member 40 can be transmitted to the first lens 51 and the second lens 52 through the transmission assembly 60, so as to simultaneously drive the first lens 51 and the second lens 52 to move, and then realize the relative movement between the first lens 51 and the second lens 52. In the embodiment, the transmission assembly 60 can be used to realize the allocation of space positions, and is beneficial to improving the space utilization.

[0049] Moreover, the transmission assembly 60 comprises a plurality of transmission gears 61, a first screw rod 621 and a second screw rod 622, the transmission gears 61 are in mesh with each other, one of the transmission gears 61 is connected with the power output end of the driving member 40, so that the plurality of transmission gears 61 are driven to rotate by one driving member 40. Since one transmission gear 61 is connected with the first screw rod 621 and another transmission gear 61 is connected with the second screw rod 622, the first screw rod 621 and the second screw rod 622 are simultaneously driven to rotate by one driving member 40, and then the first lens 51 connected with the first screw rod 621 and the second lens 52 connected with the second screw rod 622 are relatively moved, so that the overlapping degree between the first lens 51 and the second lens 52 is adjusted, and then the zooming is realized.

[0050] That is to say, by adopting the lens assembly 50 comprising the two built-in movable multifocal lenses, the autorefractometer is realized, the relative positions between the two lenses are adjusted by the driving member 40, and the diopter is changed in the range of-12.00D to +6.00D, for example, -12.00D, -10.00D, -8.00D, -6.00D, -3.00D, -2.00D, -1.00D, 0.00D, +1.00D, +2.00D, +3.00D, +4.00D, +5.00D or +6.00D, etc. In addition, by the combination of the driving member 40, the transmission assembly 60 and the lens assembly 50, the diopter measurement is realized with the increment or decrement of 0.25D. It can be seen that in the embodiment, the autorefractometer 100 can solve the technical problems of the range limitation and the difficulty in meeting the refraction requirements caused by the single lens movement.

[0051] In the embodiment, the autorefractometer 100 with the compact structure, easy to carry and simple operation is provided, so that the non-professionals can easily complete the self-refraction at home, thereby saving time and cost. In the embodiment, by adopting the combination of the housing 10, the driving member 40, the transmission assembly 60 and the lens assembly 50, the driving mode of the first lens 51 and the second lens 52 is driven by the driving member 40, and compared with the traditional manual zooming, the convenience of the zooming is improved. In addition, by the autorefractometer 100 of the embodiment, the diopter is changed in the range of-12.00D to +6.00D, and the diopter measurement is realized with the increment or decrement of 0.25D, the refraction requirements can be met, the personal refraction process can be greatly simplified, and the life convenience is improved.

[0052] Optionally, the housing 10 further comprises a handle for convenient holding, and a control button can be integrated at the same time, so as to facilitate the user to adjust the focal length of the eyepiece and start / stop the measurement process. For example, by pressing the button, the micro motor adjusts the position of the lens according to the instruction.

[0053] In some specific embodiments of the utility model, the transmission assembly 60 further includes a sliding block 63, the sliding block 63 is installed to the first lead screw 621 or the second lead screw 622, and the sliding block 63 is connected with the first lens 51 or the second lens 52. That is to say, the driving piece 40 drives the transmission gear 61 to rotate, the transmission gear 61 is installed on the first lead screw 621 or the second lead screw 622, thereby driving the first lead screw 621 or the second lead screw 622 to rotate. Since the sliding block 63 is installed on the first lead screw 621 or the second lead screw 622, the first lead screw 621 or the second lead screw 622 drives the sliding block 63 to reciprocate while rotating, and the sliding block 63 is connected with the first lens 51 or the second lens 52, so the sliding block 63 can drive the first lens 51 or the second lens 52 to reciprocate. In the embodiment, by adopting the sliding block 63, the connection between the first lead screw 621 and the first lens 51 and the second lead screw 622 and the second lens 52 is facilitated, and the first lens 51 and the second lens 52 can be more smoothly and smoothly moved.

[0054] According to an embodiment of the utility model, the outer edge of the first lens 51 or the second lens 52 has a groove 511, and the sliding block 63 is installed in the groove 511. For example, the upper end outer edge of the first lens 51 is provided with the groove 511, and at least a part of the sliding block 63 can extend into the groove 511. In the embodiment, by adopting the groove 511 and the sliding block 63 in cooperation, compactness of structure can be realized.

[0055] In some specific embodiments of the utility model, the optometry instrument 100 further includes a guide piece 70, the guide piece 70 is installed in the accommodation space 11 and parallel with the first lead screw 621 and the second lead screw 622, and the guide piece 70 is connected with the first lens 51 or the second lens 52 to guide the movement of the first lens 51 or the second lens 52. That is to say, the first lens 51 or the second lens 52 can move along the extension direction of the guide piece 70, realizing the guiding effect of the guide piece 70, and in the embodiment, by adopting the guide piece 70, the stability during the movement of the first lens 51 or the second lens 52 can be improved.

[0056] According to one embodiment of the utility model, two ends of the first lens 51 or the second lens 52 correspond to two guide pieces 70 respectively. For example, the first lens 51 or the second lens 52 has four top corners on the outer periphery, the first lens 51 or the second lens 52 corresponds to two guide pieces 70, and two top corners on the same side of the first lens 51 or the second lens 52 are connected with one guide piece 70. That is, the first lens 51 or the second lens 52 is a substantially quadrilateral, including four top corners, a through hole is arranged at each top corner position, one guide piece 70 passes through two through holes, and the installation between the first lens 51 or the second lens 52 and the guide piece 70 is realized. In the embodiment, by adopting two guide pieces 70, the two sides of the first lens 51 or the second lens 52 can be guided simultaneously, and the stability of the first lens 51 or the second lens 52 is improved. For example, the lens assembly 50 includes the first lens 51 and the second lens 52, the first lens 51 is on the front side, and the second lens 52 is on the rear side. Taking the first lens 51 on the front side as an example, one guide piece 70 sequentially passes through the left top corner and the right top corner of the upper end of the first lens 51, and the other guide piece 70 sequentially passes through the left top corner and the right top corner of the lower end of the first lens 51.

[0057] In some specific manners of the utility model, in the first direction, the detection port 12 is close to one end of the shell 10, and the driving piece 40 is close to the other end of the shell 10, which is beneficial to realize the space utilization of the long strip-shaped shell 10. For example, the optometry instrument is a single-tube handheld optometry instrument, the detection port 12 is close to one end of the length direction of the single-tube handheld optometry instrument, and the driving piece 40 is close to the other end of the length direction of the single-tube handheld optometry instrument.

[0058] According to one embodiment of the utility model, the optometry instrument 100 further includes: a mounting frame 30, the mounting frame 30 is installed in the containing space 11, the mounting frame 30 has a movable space inside, the lens assembly is installed in the movable space, the size of the movable space in the first direction is greater than the size of the first lens 51 and the second lens 52, and the overlapping degree of the first lens 51 and the second lens 52 in the first direction is adjusted conveniently. The mounting frame 30 is provided with a mounting through hole 36, so as to pass through the first lead screw 621 and the second lead screw 622, the first lead screw 621 and the second lead screw 622 are installed conveniently, and the driving piece 40 located outside the mounting frame 30 is connected. The mounting frame 30 can play the roles of supporting, bearing, providing an installation area and the like.

[0059] In some specific embodiments of the utility model, the mounting frame 30 comprises: a first side plate 32, a second side plate 33, a third side plate 34 and a fourth side plate 35, the first side plate 32 and the second side plate 33 are distributed apart along the second direction, the third side plate 34 and the fourth side plate 35 are distributed apart along the first direction, and mounting through holes 36 are arranged on the third side plate 34 and the fourth side plate 35. For example, the first side plate 32 and the second side plate 33 are distributed apart along the front-back direction, and the third side plate 34 and the fourth side plate 35 are distributed apart along the left-right direction. The first side plate 32, the second side plate 33, the third side plate 34 and the fourth side plate 35 can enclose a movable space, the open movable space is conducive to the installation and removal of the lens assembly 50, and the movable range of the first lens 51 and the second lens 52 in the first direction can be limited, and the first lead screw 621 and the second lead screw 622 can be further supported by the third side plate 34 and the fourth side plate 35.

[0060] In some specific embodiments of the utility model, the mounting frame 30 further comprises: a first cylinder 81 and a second cylinder 82. The first cylinder 81 is mounted on the outer side of the first side plate 32 and extends along the first direction, and the first cylinder 81 has a first channel 811, one end of the first channel 811 being opposite to the lens assembly. The second cylinder 82 is mounted on the outer side of the second side plate 33 and extends along the first direction, and the second cylinder 82 has a second channel 821, one end of the second channel 821 being opposite to the lens assembly.

[0061] That is, the first cylinder 81 is mounted on the mounting frame 30, one end of the first cylinder 81 can be connected to the outside world, and the user's eyes can be aligned with one end of the first cylinder 81, for example, the front end of the first cylinder 81 is aligned with the detection port 12, and the user aligns the eye with the detection port 12 during use, the rear end of the first cylinder 81 is opposite to the front side of the lens assembly 50, and the second cylinder 82 is opposite to the rear side of the lens assembly 50, which is conducive to improving the detection accuracy.

[0062] According to an embodiment of the utility model, the optometry instrument 100 is a handheld optometry instrument, and the user can hold the optometry instrument 100 by hand, which is convenient to use.

[0063] According to an embodiment of the utility model, the shell 10 comprises a first shell 13 and a second shell 14, the first shell 13 and the second shell 14 are detachably connected, and the accommodation space 11 is defined by cooperation between the first shell 13 and the second shell 14. During installation, the internal parts, such as the mounting frame 30, the driving part 40 and the first lens 51 and the second lens 52, can be installed on one side of the first shell 13, and then the second shell 14 is clamped on the first shell 13. In this embodiment, the combination of the first shell 13 and the second shell 14 facilitates the assembly of the optometry instrument 100.

[0064] Optionally, the mounting frame 30 is fixed on the second shell 14 by screws, facilitating installation.

[0065] Optionally, the first shell 13 and the second shell 14 are fixed by buckles, facilitating installation and disassembly. Optionally, the first shell 13 is fixed to the second shell 14 by screws, facilitating installation, disassembly and stability.

[0066] Optionally, the light source 21 can be mounted on the first shell 13 by glue, improving installation convenience.

[0067] Optionally, the first shell 13 can be defined as a lower shell, and the second shell 14 can be defined as an upper shell.

[0068] Optionally, the optometer 100 further comprises a ring-shaped flexible member 91, which can be mounted on the detection port 12, capable of improving the airtightness around the eyes, improving the comfort of the user's eyes and the detection accuracy.

[0069] According to an embodiment of the present application, the optometer 100 further comprises a sealing member 92, which is detachably mounted on the detection port 12. The sealing member 92 can be directly or indirectly connected to the detection port 12 or the flexible member 91. When the optometer 100 is not working, the detection port 12 can be closed by the sealing member 92 to prevent dust from entering the inside of the optometer 100. It can be understood that the sealing member 92 can be used as a cover cap. Optionally, the cover cap is designed to be rotatable, which can be used for individual testing of each eye. In use, the user places the cover cap in front of one eye to ensure that the eye is completely covered.

[0070] In some specific embodiments of the present application, the connecting member 93 is a flexible member, one end of the connecting member 93 is connected to the shell 10, and the other end of the connecting member 93 is connected to the sealing member 92. That is, the optometer 100 further comprises a connecting member 93, which connects the shell 10 and the sealing member 92, can realize the assembly of the sealing member 92 to the shell 10, prevent the sealing member 92 from falling off, and facilitate the storage of the sealing member 92.

[0071] Optionally, the sealing member 92 is fixed on the shell 10, for example, the second shell 14, by the flange 94 and the screws, which can improve the installation stability. For example, the flange 94 is annular and is mounted on the shell 10 by a plurality of screws in the circumferential direction.

[0072] According to one embodiment of the present application, the optometry instrument 100 further comprises a first PCB board 991, and the first PCB board 991 is installed on the second shell 14 through screws. Optionally, the optometry instrument 100 further comprises a second PCB board 992. Optionally, the second PCB board 992 is fixed on the first shell 13 through screws. The first PCB board 991 and the second PCB board 992 can be driving control circuit boards, light source control circuit boards, etc. It can be understood that the PCB board structure and the realization of electric control belong to the technical means known by those skilled in the art, and will not be repeated here.

[0073] In some specific embodiments of the present application, the optometry instrument 100 further comprises a switch button 951, and the switch button 951 is installed on the shell 10, for example, installed on the second shell 14.

[0074] Optionally, the switch button 951 is fixed on the shell 10 through screws, improving the installation convenience and structural stability.

[0075] Optionally, the optometry instrument 100 further comprises an adjustment button 952, and the adjustment button 952 can be fixed on the first shell 13 through the second PCB board 992, and can realize the control of measurement start and stop.

[0076] According to one embodiment of the present application, the optometry instrument 100 further comprises a power module 96, and the power module 96 is installed in the accommodation space 11 and electrically connected with the driving part 40. The power module 96 can provide power for the driving part 40 and the like. Optionally, the power module 96 is fixed on the first shell 13 through glue, and has strong structural stability and is convenient to install. Further, the shell 10 is provided with a charging interface 97, and the charging interface 97 can realize the charging of the power module.

[0077] Optionally, the charging interface 97 is fixed on the shell 10 through screws, for example, installed on the second shell 14, improving the installation convenience.

[0078] Optionally, the optometry instrument 100 further comprises a bracket 98, and the driving part 40 can be fixed on the bracket 98 through screws, facilitating the installation of the driving part 40.

[0079] Optionally, the driving part 40, the bracket 98, the transmission gear 61 and the like can be fixed on the mounting rack 30 through screws, having the advantage of high integration.

[0080] Optionally, the housing 10 also has a built-in visual target, which can be located behind the eyepiece, for the subject to observe to determine the best clarity. The observer can view the fixed visual target image in front of the eyepiece until the clearest state is found. When the best visual effect is reached, the user can lock the current setting by pressing the button, and the corresponding refraction value at this time can be displayed on the liquid crystal screen. In operation, the user can first check one eye, and then repeat the same steps for the other eye to complete the entire examination.

[0081] In summary, the optometry instrument 100 according to the embodiments of the present application can improve the automation degree of optometry and improve convenience. The optometry instrument 100 according to the embodiments of the present application can include at least one of the following advantages: (1) portability: the compact and lightweight design makes it suitable for home use and carrying out. (2) accuracy: the use of advanced optical technology and precise mechanical structure ensures the accuracy of the measurement results. (3) ease of use: the intuitive display interface plus button operation allows a variety of user groups to quickly master the use method.

[0082] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. An optometer (100), characterized in that The application relates to a multifunctional lens, which comprises the following parts: a shell (10) with a receiving space (11) in the shell (10), a detection opening (12) being arranged on the shell (10) and communicating with the receiving space (11) and the outside respectively; a driving member (40) installed in the receiving space (11); a lens assembly (50) installed in the receiving space (11), the lens assembly (50) comprising a first lens (51) and a second lens (52), the driving member (40) driving the first lens (51) and the second lens (52) to be movable, and the overlapping degree of the first lens (51) and the second lens (52) being adjusted to change the focal length; a display (99) arranged on the shell (10) and used for displaying optometry information.

2. The phoropter (100) according to claim 1, characterized in that The multifunctional lens further comprises: a transmission assembly (60) installed in the receiving space (11), the transmission assembly (60) comprising a plurality of transmission gears (61) and a first screw rod (621) and a second screw rod (622), the transmission gears (61) being meshed with each other, one of the transmission gears (61) being connected with the power output end of the driving member (40), the first screw rod (621) and the second screw rod (622) being arranged in parallel and extending along a first direction, the first screw rod (621) being connected with one of the transmission gears (61) and being driven to rotate by the transmission gear (61), the second screw rod (622) being connected with another one of the transmission gears (61) and being driven to rotate by the transmission gear (61), the overlapping degree of the first lens (51) and the second lens (52) being adjusted so that the diopter changes in the range of -12.00D to +6.00D and increases or decreases by 0.25D every time.

3. The phoropter (100) according to claim 2, characterized in that The transmission assembly (60) further comprises: a sliding block (63) installed on the first screw rod (621) or the second screw rod (622), the sliding block (63) being connected with the first lens (51) or the second lens (52).

4. The phoropter (100) according to claim 2, characterized in that The multifunctional lens further comprises: a guide member (70) installed in the receiving space (11) and arranged in parallel with the first screw rod (621) and the second screw rod (622), the guide member (70) being connected with the first lens (51) or the second lens (52) to guide the movement of the first lens (51) or the second lens (52).

5. The phoropter (100) according to claim 1, characterized in that The multifunctional lens further comprises: a sealing member (92) detachably installed on the detection opening (12).

6. The phoropter (100) according to claim 5, characterized in that The multifunctional lens further comprises: a connecting member (93) in flexible material, one end of the connecting member (93) being connected with the shell (10) and the other end of the connecting member (93) being connected with the sealing member (92).

7. The phoropter (100) according to claim 2, characterized in that The multifunctional lens further comprises: A mounting frame (30) is mounted in the accommodation space (11), and has a moving space in which the lens assembly is mounted. The moving space has a size in the first direction greater than the sizes of the first lens (51) and the second lens (52). The mounting frame (30) is provided with a mounting through hole (36) through which the first lead screw (621) and the second lead screw (622) pass.

8. The optometer (100) according to claim 7, characterized in that The mounting frame (30) comprises: a first side plate (32) and a second side plate (33) spaced apart along a second direction; a third side plate (34) and a fourth side plate (35) spaced apart along the first direction, and provided with the mounting through hole (36).

9. The optometer (100) according to claim 8, characterized in that The mounting frame (30) further comprises: a first cylinder (81) mounted on the outer side of the first side plate (32) and extending along the first direction, and having a first channel (811) with one end opposite to the lens assembly; a second cylinder (82) mounted on the outer side of the second side plate (33) and extending along the first direction, and having a second channel (821) with one end opposite to the lens assembly.

10. The phoropter (100) according to claim 1, characterized in that The housing (10) is provided with a charging interface (97), and the optometry device (100) further comprises: a power module (96) mounted in the accommodation space (11) and electrically connected with the driving member (40), and charged through the charging interface (97). The housing (10) is provided with a charging interface (97), and the optometry device (100) further comprises: a power module (96) mounted in the accommodation space (11) and electrically connected with the driving member (40), and charged through the charging interface (97).

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