Lens three-dimensional adjusting mechanism and fundus camera

Abstract

The embodiment of the utility model provides a three-dimensional adjusting mechanism of a lens and a fundus camera. The three-dimensional adjusting mechanism of the lens comprises an X-axis movement module, a Y-axis movement module, a Z-axis movement module and a lens fixing seat used for installing the lens. Wherein the lens fixing seat is in transmission connection with the Z-axis movement module and moves relative to the Z-axis movement module in the Z-axis direction; the Z-axis movement module is connected with the Y-axis movement module in a meshed mode and moves relative to the Y-axis movement module in the Y-axis direction. The Y-axis movement module is connected with the X-axis movement module in a meshed mode and moves relative to the X-axis movement module in the X-axis direction, and the X axis, the Y axis and the Z axis are three axes perpendicular to one another. The manufacturing cost of the three-dimensional adjusting mechanism can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fundus cameras, in particular to a three-dimensional adjustment mechanism of a lens and a fundus camera. Background Art

[0002] Most of the fundus cameras currently on the market use a combination of a lead screw motor and a lead screw nut for mechanical transmission. Although this structure has high stability, the corresponding cost is also high. In some scenarios where the requirements for motion accuracy and stability are not high, this will undoubtedly increase the customer's procurement costs. Utility Model Content

[0003] In view of the above problems, embodiments of the present utility model are proposed to provide a three-dimensional adjustment mechanism of a lens and a fundus camera that overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above problems, the embodiment of the utility model discloses a three-dimensional adjustment mechanism of a lens, comprising: an X-axis motion module, a Y-axis motion module, a Z-axis motion module and a lens fixing seat for mounting the lens; wherein:

[0005] The lens fixing seat is in transmission connection with the Z-axis motion module and moves relative to the Z-axis motion module along the Z-axis direction;

[0006] The Z-axis motion module is meshedly connected with the Y-axis motion module and moves relative to the Y-axis motion module along the Y-axis direction;

[0007] The Y-axis motion module is meshedly connected with the X-axis motion module and moves relative to the X-axis motion module along the X-axis direction, wherein the X-axis, the Y-axis and the Z-axis are three mutually perpendicular axes.

[0008] Optionally, the X-axis motion module includes: a first substrate and a first rack, and the Y-axis motion module includes: a second substrate, a first gear and a first motor;

[0009] The first rack is laid along the X-axis direction on a side of the first substrate facing the second substrate;

[0010] The first gear is connected to a side of the second substrate facing the first substrate, and the first gear is meshed and connected with the first rack;

[0011] The first motor is disposed on the second substrate and connected to the first gear, and is used to drive the first gear to move relative to the first rack along the X-axis direction.

[0012] Optionally, the X-axis motion module includes a first guide shaft;

[0013] The first guide shaft is arranged along the X-axis direction, and the first guide shaft is fixedly connected to a side of the first substrate facing the second substrate;

[0014] The first guide shaft passes through the second substrate and is slidably connected to the second substrate along the X-axis direction.

[0015] Optionally, supports are respectively provided at two ends of the first substrate along the X-axis direction;

[0016] Both ends of the first guide shaft are fixedly connected to the support respectively;

[0017] A protrusion is provided at the end of the second substrate, and the protrusion abuts against the first substrate, so that the second substrate is spaced apart from the first substrate;

[0018] The protruding portion is provided with a through hole for penetrating the first guide shaft.

[0019] Optionally, the three-dimensional adjustment mechanism further includes a first control module, and the X-axis motion module further includes a first photoelectric sensor, a first baffle and a second baffle;

[0020] The first control module is connected to the first photoelectric sensor, and the first photoelectric sensor is fixedly connected to the second substrate;

[0021] The first blocking piece and the second blocking piece are both fixedly connected to a side of the first substrate facing the second substrate, and the first blocking piece and the second blocking piece are spaced apart along the X-axis direction;

[0022] The first baffle and the second baffle are both used to block the light emitted by the first photoelectric sensor, the first control module is electrically connected to the first photoelectric sensor and is used to obtain a first limit position and a second limit position of the first photoelectric sensor, the first control module is used to obtain first initial position information according to the first limit position and the second limit position, and the first initial position is an intermediate position between the first limit position and the second limit position;

[0023] The first control module is connected to the first motor, and is used for driving the first photoelectric sensor to return to the first initial position through the first motor.

[0024] Optionally, the Z-axis motion module includes: a third substrate, a second gear and a second motor;

[0025] A second rack is disposed on a side of the second substrate away from the first substrate, and the second rack is disposed along the Y-axis direction;

[0026] The second gear is connected to a side of the third substrate facing the second substrate, and the second gear is meshed and connected with the second rack;

[0027] The second motor is disposed on the third substrate and connected to the second gear, and is used to drive the second gear to move relative to the second rack along the Y-axis direction.

[0028] Optionally, the Y-axis motion module includes a second guide shaft;

[0029] The second guide shaft is arranged along the Y-axis direction, and the second guide shaft is fixedly connected to a side of the second substrate facing the third substrate;

[0030] The second guide shaft passes through the third substrate and is slidably connected to the third substrate along the Y-axis direction.

[0031] Optionally, the three-dimensional adjustment mechanism further includes a second control module, and the Y-axis motion module further includes a second photoelectric sensor, a third baffle and a fourth baffle;

[0032] The second control module is connected to the second photoelectric sensor, and the second photoelectric sensor is fixedly connected to a side of the second substrate facing the third substrate;

[0033] The third blocking piece and the fourth blocking piece are both fixedly connected to a side of the third substrate facing the second substrate, and the third blocking piece and the fourth blocking piece are spaced apart along the Y-axis direction;

[0034] The third baffle and the fourth baffle are both used to block the light emitted by the second photoelectric sensor, the second control module is electrically connected to the second photoelectric sensor and is used to obtain a third limit position and a fourth limit position of the second photoelectric sensor, the second control module is used to obtain second initial position information according to the third limit position and the fourth limit position, and the second initial position is an intermediate position between the third limit position and the fourth limit position;

[0035] The second control module is connected to the second motor, and is used for driving the second photoelectric sensor to return to the second initial position through the second motor.

[0036] Optionally, the Z-axis motion module further includes a screw and a third motor, and the lens fixing seat includes a connecting portion;

[0037] The screw extends along the Z-axis direction;

[0038] The third motor is fixedly connected to a side of the third substrate away from the second substrate and is connected to the screw rod to drive the screw rod to rotate;

[0039] The connecting portion is sleeved outside the screw rod, and the connecting portion is threadedly connected to the screw rod.

[0040] Optionally, the Z-axis motion module further includes a fixed plate and a third guide shaft;

[0041] The fixing plate and the third substrate are fixedly connected and spaced apart;

[0042] The third guide shaft is arranged along the Z-axis direction, and one end of the third guide shaft is fixedly connected to the third substrate, and the other end of the third guide shaft is fixedly connected to the fixed plate;

[0043] The third guide shaft passes through the lens fixing seat and is slidably connected with the lens fixing seat.

[0044] Optionally, the three-dimensional adjustment mechanism further includes a third control module, and the Z-axis motion module further includes a third photoelectric sensor, a fifth baffle and a sixth baffle;

[0045] The third control module is connected to the third photoelectric sensor, and the third photoelectric sensor is fixedly connected to the lens fixing seat;

[0046] The fifth baffle and the sixth baffle are both fixedly connected to the third guide shaft, and the fifth baffle and the sixth baffle are spaced apart along the Z-axis direction;

[0047] The fifth baffle and the sixth baffle are both used to block the light emitted by the third photoelectric sensor, the third control module is electrically connected to the third photoelectric sensor and is used to obtain the fifth limit position and the sixth limit position of the third photoelectric sensor, and the third control module is used to obtain third initial position information according to the fifth limit position and the sixth limit position, and the third initial position is the middle position between the fifth limit position and the sixth limit position;

[0048] The third control module is connected to the third motor and is used for driving the third photoelectric sensor to return to the third initial position through the third motor.

[0049] Optionally, the three-dimensional adjustment mechanism further includes a first locking structure, a second locking structure and a third locking structure;

[0050] The first locking structure is connected to the lens fixing seat and the Z-axis motion module respectively, and is used to lock or unlock the lens fixing seat and the Z-axis motion module;

[0051] The second locking structure is connected to the Z-axis motion module and the Y-axis motion module respectively, and is used to lock or unlock the Z-axis motion module and the Y-axis motion module;

[0052] The second locking structure is connected to the Y-axis motion module and the X-axis motion module respectively, and is used to lock or unlock the Y-axis motion module and the X-axis motion module.

[0053] In a second aspect, an embodiment of the utility model further discloses a fundus camera, comprising the three-dimensional adjustment mechanism of the above-mentioned lens.

[0054] The utility model embodiment includes the following advantages:

[0055] In the embodiment of the utility model, the lens fixing seat is connected to the Z-axis motion module by transmission, and can move relative to the Z-axis motion module along the Z-axis direction; the Z-axis motion module is meshed and connected to the Y-axis motion module, and can move relative to the Y-axis motion module along the Y-axis direction; the Y-axis motion module is meshed and connected to the X-axis motion module, and can move relative to the X-axis motion module along the X-axis direction, and the X-axis, the Y-axis, and the Z-axis are three mutually perpendicular axes, so that the lens fixing seat can simultaneously complete the movement in the X-axis direction, the Y-axis direction, and the Z-axis direction. Since the lens fixing seat is used to install the lens, the shooting effect of the lens can be improved by controlling the movement of the lens fixing seat in the three directions of the X-axis, the Y-axis, and the Z-axis. In an embodiment of the utility model, the Z-axis motion module is meshedly connected with the Y-axis motion module, and the Y-axis motion module is meshedly connected with the X-axis motion module. Moreover, the X-axis motion module 1, the Y-axis motion module 2 and the Z-axis motion module 3 can be installed in a modular manner, and the transmission method is relatively simple, which can reduce the assembly complexity of the three-dimensional adjustment mechanism, thereby improving the assembly efficiency of the three-dimensional adjustment mechanism and reducing the manufacturing cost of the three-dimensional adjustment mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a structural schematic diagram of a three-dimensional adjustment mechanism in an embodiment of the utility model;

[0057] Figure 2 This is a schematic diagram of the assembly structure of a Y-axis motion module and an X-axis motion module in an embodiment of the utility model;

[0058] Figure 3 This is a schematic diagram of the assembly structure of a Z-axis motion module and a Y-axis motion module in an embodiment of the utility model;

[0059] Figure 4 It is a schematic diagram of the assembly structure of a lens fixing seat and a Z-axis motion module in an embodiment of the utility model.

[0060] Description of reference numerals:

[0061] 1-X-axis motion module, 11-first substrate, 111-support, 12-first rack, 13-first guide shaft, 14-photoelectric sensor, 15-first baffle, 17-baffle connector, 2-Y-axis motion module, 21-second substrate, 211-protrusion, 212-protrusion structure, 22-first gear, 23-first motor, 24-second rack, 25-second guide shaft, 26-second photoelectric sensor, 27-third baffle, 3-Z-axis motion module, 31-third substrate, 32-second gear, 33-second motor, 34-screw, 35-third motor, 36-fixed plate, 37-third guide shaft, 38-third photoelectric sensor, 39-fifth baffle, 4-lens fixing seat, 41-connecting part, 42-mounting hole, 5-lens, 6-threaded connector. DETAILED DESCRIPTION

[0062] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0063] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0064] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0065] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] One of the core concepts of the embodiment of the utility model is to disclose a three-dimensional adjustment mechanism of the lens, such as Figure 1 As shown, the three-dimensional adjustment mechanism may specifically include: an X-axis motion module 1, a Y-axis motion module 2, a Z-axis motion module 3 and a lens fixing seat 4 for mounting a lens 5; wherein the lens fixing seat 4 may be transmission-connected with the Z-axis motion module 3, and may move relative to the Z-axis motion module 3 along the Z-axis direction; the Z-axis motion module 3 may be meshingly connected with the Y-axis motion module 2, and may move relative to the Y-axis motion module 2 along the Y-axis direction; the Y-axis motion module 2 may be meshingly connected with the X-axis motion module 1, and may move relative to the X-axis motion module 1 along the X-axis direction, wherein the X-axis, Y-axis and Z-axis are three mutually perpendicular axes.

[0067] In the embodiment of the utility model, the lens holder 4 is connected to the Z-axis motion module 3 by transmission, and can move relative to the Z-axis motion module 3 along the Z-axis direction; the Z-axis motion module 3 is meshed and connected to the Y-axis motion module 2, and can move relative to the Y-axis motion module 2 along the Y-axis direction; the Y-axis motion module 2 is meshed and connected to the X-axis motion module 1, and can move relative to the X-axis motion module 1 along the X-axis direction, so that the lens holder 4 can simultaneously complete the movement in the X-axis direction, the Y-axis direction, and the Z-axis direction. Since the lens holder 4 is used to install the lens 5, the shooting effect of the lens 5 can be improved by controlling the movement of the lens holder 4 in the three directions of the X-axis, the Y-axis, and the Z-axis. In an embodiment of the utility model, the Z-axis motion module 3 is meshedly connected with the Y-axis motion module 2, and the Y-axis motion module 2 is meshedly connected with the X-axis motion module 1. Moreover, the X-axis motion module 1, the Y-axis motion module 2 and the Z-axis motion module 3 can be installed in a modular manner. The transmission method is relatively simple, which can reduce the assembly complexity of the three-dimensional adjustment mechanism, thereby improving the assembly efficiency of the three-dimensional adjustment mechanism and reducing the manufacturing cost of the three-dimensional adjustment mechanism.

[0068] The lens fixing seat 4 described in the embodiment of the utility model is mainly used to fix and install the lens 5. Since the lens fixing seat 4 is transmission connected with the Z-axis motion module 3 and the lens fixing seat 4 can move relative to the Z-axis motion module 3 along the Z-axis direction, the lens fixing seat 4 can drive the lens 5 to move along the Z-axis direction.

[0069] Specifically, the lens fixing seat 4 can be threadedly connected to the Z-axis motion module 3, or the fixing seat 4 can also be meshedly connected to the Z-axis motion module 3, so that the lens fixing seat 4 can move relative to the Z-axis motion module 3 along the Z-axis direction.

[0070] Furthermore, since the Z-axis motion module 3 is meshedly connected with the Y-axis motion module 2 and the Z-axis motion module 3 can move relative to the Y-axis motion module 2 along the Y-axis direction, the lens 5 on the lens fixing seat 4 is driven to move along the Y-axis direction.

[0071] Furthermore, since the Y-axis motion module 2 is meshedly connected with the X-axis motion module 1 and the Y-axis motion module 2 can move relative to the X-axis motion module 1 along the X-axis direction, the lens 5 on the lens fixing seat 4 can be driven to move along the X-axis direction.

[0072] Specifically, since the X-axis, the Y-axis, and the Z-axis are three mutually perpendicular axes, with the cooperation of the X-axis motion module 1, the Y-axis motion module 2, the Z-axis motion module 3 and the lens fixing seat 4, a three-degree-of-freedom mobile platform can be formed. The lens fixing seat 4 can drive the lens 5 to move along the X-axis direction, the Y-axis direction, and the Z-axis direction, so that the lens 5 can move arbitrarily in the space, which can improve the shooting effect of the lens 5.

[0073] Specifically, the X-axis motion module 1, the Y-axis motion module 2, the Z-axis motion module 3 and the lens fixing seat 4 can be assembled in a modular assembly manner to obtain the three-dimensional adjustment mechanism. The three-dimensional adjustment mechanism has fewer module types, which can improve production and assembly efficiency. Moreover, the three-dimensional adjustment mechanism is assembled in the fundus camera, so that the fundus camera is small in size, occupies a small space, and is easy to carry and place.

[0074] Furthermore, the three-dimensional adjustment mechanism can be made into a universal independent motion platform, and in the subsequent product upgrade process, the three-dimensional adjustment mechanism can be expanded to install other different types of lenses 5. By adopting a universal three-dimensional adjustment mechanism, the product development cycle of the fundus camera can be shortened and the stability of the product can be ensured.

[0075] Alternatively, if Figure 2 As shown, the X-axis motion module 1 may include: a first substrate 11 and a first rack 12, and the Y-axis motion module 2 may include: a second substrate 21, a first gear 22 and a first motor 23; the first rack 12 may be laid on the side of the first substrate 11 facing the second substrate 21 along the X-axis direction; the first gear 22 is connected to the side of the second substrate 21 facing the first substrate 11, and the first gear 22 may be meshed and connected with the first rack 12; the first motor 23 may be arranged on the second substrate 21 and connected to the first gear 22, for driving the first gear 22 to move relative to the first rack 12 along the X-axis direction.

[0076] In an embodiment of the utility model, the first motor 23 can drive the first gear 22 to move along the X-axis direction relative to the first rack 12. Since the first gear 22 is connected to the second substrate 21, the first rack 12 is laid on the first substrate 11 along the X-axis direction, so that the second substrate 21 can move along the X-axis direction relative to the first substrate 11, thereby realizing that the Y-axis motion module 2 can move along the X-axis direction relative to the X-axis motion module 1.

[0077] Specifically, the first rack 12 is laid on the first substrate 11 along the X-axis direction, which can facilitate the movement of the first gear 22 in the X-axis direction. The first gear 22 can be meshed with the first gear 22, which can realize the meshing connection between the Y-axis motion module 2 and the X-axis motion module 1. Moreover, the transmission method between the first gear 22 and the first rack 12 is relatively simple. In addition, the first rack 12 is laid on the first substrate 11 along the X-axis direction, which can improve the operation stability of the first gear 22 driving the Y-axis motion module 2 to move relative to the X-axis motion module 1, and the transmission efficiency is relatively high.

[0078] Specifically, the first rack 12 may be fixedly connected to the first substrate 11 . The gear shaft of the first gear 22 may be fixedly connected to the second substrate 21 .

[0079] Optionally, the X-axis motion module 1 may include a first guide shaft 13; the first guide shaft 13 may be arranged along the X-axis direction, and the first guide shaft 13 may be fixedly connected to the side of the first substrate 11 facing the second substrate 21; the first guide shaft 13 may pass through the second substrate 21 and may be slidably connected to the second substrate 21 along the X-axis direction.

[0080] In the embodiment of the utility model, the first guide shaft 13 is arranged on the side of the first substrate 11 facing the second substrate 21 along the X-axis direction, and the first guide shaft 13 passes through the second substrate 21, so that the first guide shaft 13 can guide the second substrate 21, which can improve the reliability of the movement of the second substrate 21 along the X-axis direction.

[0081] Specifically, the number of the first guide shafts 13 can be one, two, or more, etc., which can be set according to actual needs, and the embodiment of the utility model does not make any specific limitation on this.

[0082] Specifically, Figure 2 , showing a case where the number of the first guide shafts 13 is two, the two first guide shafts 13 can be symmetrically arranged on opposite sides of the first substrate 11.

[0083] Specifically, the first guide shaft 13 passes through the second substrate 21 and can be slidably connected to the second substrate 21 along the X-axis direction. The first guide shaft 13 can also be used to support the second substrate 21.

[0084] Optionally, supports 111 may be respectively provided at both ends of the first substrate 11 along the X-axis direction; both ends of the first guide shaft 13 may be respectively fixedly connected to the supports 111; a protrusion 211 may be provided at the end of the second substrate 21, and the protrusion 211 may abut against the first substrate 11 so that the second substrate 21 is spaced apart from the first substrate 11; a through hole for passing the first guide shaft 13 may be provided on the protrusion 211.

[0085] In the embodiment of the utility model, the first substrate 11 and the second substrate 21 are arranged at intervals, so that the first gear 22 and the first rack 12 structure are arranged between the first substrate 11 and the second substrate 21. A through hole for passing the first guide shaft 13 is provided on the protrusion 211, so as to realize the sliding connection between the first guide shaft 13 and the second substrate 21.

[0086] Specifically, both ends of the first guide shaft 13 are fixedly connected to the support 111, respectively, so as to facilitate the fixation of the first guide shaft 13. Furthermore, the support 111 may be provided with a groove for passing the first guide shaft 13, so that at least part of the first guide shaft 13 is embedded in the groove, so as to improve the reliability of the fixed connection between the first guide shaft 13 and the support 111. The groove may be a through groove or a half-through groove, etc., which may be specifically set according to actual needs, and the embodiment of the utility model does not specifically limit this.

[0087] Specifically, the support 111 can be an L-shaped structure or a T-shaped structure, etc., and can be configured according to actual needs, and the embodiment of the utility model does not make specific limitations on this.

[0088] Optionally, the three-dimensional adjustment mechanism may also include a first control module, and the X-axis motion module 1 may also include a first photoelectric sensor 14, a first baffle 15 and a second baffle; the first control module is connected to the first photoelectric sensor 14, and the first photoelectric sensor 14 can be fixedly connected to the second substrate 21; the first baffle 15 and the second baffle can both be fixedly connected to the side of the first substrate 11 facing the second substrate 21, and the first baffle 15 and the second baffle are spaced apart along the X-axis direction; the first baffle 15 and the second square piece are both used to block the light emitted by the first photoelectric sensor 14, the first control module can be electrically connected to the first photoelectric sensor 14 and used to obtain the first extreme position and the second extreme position of the first photoelectric sensor 14, the first control module is used to obtain the first initial position information according to the first extreme position and the second extreme position, and the first initial position is the middle position of the first extreme position and the second extreme position; the first control module is connected to the first motor 23, and is used to drive the first photoelectric sensor 14 back to the first initial position through the first motor 23.

[0089] In an embodiment of the utility model, before starting to use the fundus camera, the first extreme position and the second extreme position of the first photoelectric sensor 14 can be obtained first, and then the initial position of the first photoelectric sensor 14 can be obtained, and the first photoelectric sensor 14 can be controlled to return to the initial position, so as to achieve initial positioning of the lens 5 in the X-axis direction, and the accuracy of adjusting the lens 5 can be further improved.

[0090] Specifically, in the embodiment of the utility model, the first optical sensor 14, the first baffle 15 and the second baffle can be combined to form a first initial positioning component. Under the action of the first initial positioning component, the function of a dual-channel photoelectric switch can be realized, which can improve the accuracy of initial positioning of the lens 5 in the X-axis direction.

[0091] Specifically, the area between the first limit position and the second limit position is the movement range of the first photoelectric sensor 14. The first baffle 15 can be set corresponding to the first limit position, and the second baffle can be set corresponding to the second limit position, or vice versa. It can be set according to actual needs, and the embodiment of the utility model does not specifically limit this.

[0092] Specifically, the first baffle 15 and the second baffle can both be flat plate structures, such as rectangular plates, circular plates, triangular plates or irregular plates, etc. The shapes of the first baffle 15 and the second baffle can be the same or different, etc., and can be set according to actual needs. The embodiment of the utility model does not make specific limitations on this.

[0093] Specifically, the first baffle 15 and the second baffle may be connected via a baffle connector 17 , and the baffle connector 17 may be a long strip structure arranged along the X-axis direction.

[0094] Specifically, the first baffle 15, the second baffle and the baffle connector 17 can be fixed by a connection method, or the first baffle 15, the second baffle and the baffle connector 17 can be an integrated structure, which can be specifically configured according to actual needs, and the embodiment of the utility model does not make specific limitations on this.

[0095] Alternatively, if Figure 3 As shown, the Z-axis motion module 3 may include: a third substrate 31, a second gear 32 and a second motor 33; a second rack 24 may be provided on the side of the second substrate 21 away from the first substrate 11, and the second rack 24 may be provided along the Y-axis direction; the second gear 32 is connected to the side of the third substrate 31 facing the second substrate 21, and the second gear 32 is meshed and connected with the second rack 24; the second motor 33 is provided on the third substrate 31 and connected to the second gear 32, and is used to drive the second gear 32 to move relative to the second rack 24 along the Y-axis direction.

[0096] In the embodiment of the utility model, the second rack 24 is arranged along the Y-axis direction, the second gear 32 is meshedly connected with the second rack 24, and the second motor 33 is connected with the second gear 32, so as to facilitate the movement of the second gear 32 along the Y-axis direction. Since the second gear 32 is connected to the third substrate 31 and the second rack 24 is connected to the second substrate 21, the Z-axis motion module 3 can move relative to the Y-axis motion module 2 along the Y-axis direction. The second gear 32 is meshedly connected with the second rack 24, so as to facilitate the meshing connection between the Z-axis motion module 3 and the Y-axis motion module 2.

[0097] Optionally, the Y-axis motion module 2 may include a second guide shaft 25; the second guide shaft 25 may be arranged along the Y-axis direction, and the second guide shaft 25 may be fixedly connected to the side of the second substrate 21 facing the third substrate 31; the second guide shaft 25 may pass through the third substrate 31 and may be slidably connected to the third substrate 31 along the Y-axis direction.

[0098] In the embodiment of the utility model, the second guide shaft 25 is arranged along the Y-axis direction, and the second guide shaft 25 passes through the third substrate 31, so that the second guide shaft 25 can guide the third substrate 31, which can improve the reliability of the third substrate 31 moving relative to the second substrate 21 along the Y-axis direction.

[0099] Specifically, the second substrate 21 and the third substrate 31 may be spaced apart from each other to facilitate the arrangement of the second gear 32 and the second rack 24 .

[0100] Specifically, a protrusion structure 212 may be provided on the side of the second substrate 21 facing the third substrate 31, and a groove may be provided on the protrusion structure 212 at a position opposite to the second guide shaft 25, so that at least a portion of the second guide shaft 25 can be embedded in the groove to improve the reliability of the fixed connection between the second guide shaft 25 and the second substrate 21.

[0101] Specifically, the sliding manner of the second guide shaft 25 and the third substrate 31 may refer to the sliding manner of the first guide shaft 13 and the second substrate 21 , and the embodiment of the utility model will not be described in detail.

[0102] Specifically, the number of the second guide shafts 25 can be one, two, or more, etc., which can be set according to actual needs, and the embodiment of the utility model does not make specific limitations on this.

[0103] Specifically, Figure 3 , showing the case where the number of the second guide shafts 25 is two, the two second guide shafts 25 can be symmetrically arranged on opposite sides of the second substrate 21.

[0104] Optionally, the three-dimensional adjustment mechanism also includes a second control module, and the Y-axis motion module 2 also includes a second photoelectric sensor 26, a third baffle 27 and a fourth baffle; the second photoelectric sensor 26, the third baffle 27 and the fourth baffle can be combined to form a second initial positioning component, which can be specifically arranged with reference to the initial positioning component in the X-axis motion module 1 to achieve initial positioning of the lens 5 in the Y-axis direction. The second control module is connected to the second photoelectric sensor 26, and the second photoelectric sensor 26 can be fixedly connected to the side of the second substrate 21 facing the third substrate 31; the third baffle 27 and the fourth baffle can be arranged at intervals along the Y-axis direction, and are both fixedly connected to the side of the third substrate 31 facing the second substrate 21; the third baffle 27 and the fourth baffle are both used to block the light emitted by the second photoelectric sensor 26, the second control module is electrically connected to the second photoelectric sensor 26 and is used to obtain the third extreme position and the fourth extreme position of the second photoelectric sensor, the second control module is used to obtain the second initial position according to the third extreme position and the fourth extreme position, and the second initial position is the middle position between the third extreme position and the fourth extreme position; the second control module is connected to the second motor, and is used to drive the second photoelectric sensor 26 back to the initial position through the second motor.

[0105] In the embodiment of the utility model, by adjusting the second photoelectric sensor 26 to the initial position, the lens 5 can be driven back to the initial position on the Y-axis, and then the position of the lens 5 can be adjusted from the initial position, which can improve the accuracy of adjusting the position of the lens 5 on the Y-axis.

[0106] Specifically, the third limit position and the fourth limit position are two limit positions of the second photoelectric sensor 26 on the Y-axis, and the second photoelectric sensor 26 can switch between the third limit position and the fourth limit position along the Y-axis.

[0107] Specifically, the third baffle 27 can be set corresponding to the third limit position, and the fourth baffle can be set corresponding to the fourth limit position, and vice versa. It can be set according to actual needs, and the embodiment of the utility model does not make specific limitations on this.

[0108] Alternatively, if Figure 4 As shown, the Z-axis motion module 3 may include a screw 34 and a third motor 35, and the lens fixing seat 4 may include a connecting portion 41; the screw 34 may extend along the Z-axis direction; the third motor 35 may be fixedly connected to a side of the third substrate 31 away from the second substrate 21, and may be connected to the screw 34 to drive the screw 34 to rotate; the connecting portion 41 is sleeved on the screw 34, and the connecting portion 41 may be threadedly connected to the screw 34.

[0109] In the embodiment of the utility model, the screw 34 is arranged along the Z-axis direction, the third motor 35 is connected to the screw 34 and drives the screw 34 to rotate, and the connecting part 41 of the lens fixing seat 4 is sleeved on the screw 34 and threadedly connected to the screw 34, so as to facilitate the movement of the lens fixing seat 4 along the Z-axis direction.

[0110] Specifically, the connecting portion 41 may be provided with a through hole, the through hole is sleeved outside the screw rod 34 , and a thread matching with the screw rod 34 is provided on the inner wall of the through hole.

[0111] Alternatively, the Z-axis motion module 3 may further include a lead screw nut, which may be passed through a through hole on the connecting portion 41 and threadedly connected to the screw rod 34 .

[0112] Optionally, the Z-axis motion module 3 also includes a fixed plate 36 and a third guide shaft 37; the fixed plate 36 and the third substrate 31 are fixedly connected and arranged at intervals; the third guide shaft 37 is arranged along the Z-axis direction, and one end of the third guide shaft 37 is fixedly connected to the third substrate 31, and the other end is fixedly connected to the fixed plate 36; the third guide shaft 37 is passed through the lens fixing seat 4, and can be slidably connected to the lens fixing seat 4.

[0113] In the embodiment of the utility model, the third guide shaft 37 is arranged along the Z-axis direction, and the third guide shaft 37 passes through the lens fixing seat 4, so that the third guide shaft 37 guides the lens fixing seat 4 to improve the reliability of the movement of the lens fixing seat 4 along the Z-axis direction.

[0114] Specifically, the number of the third guide shafts 37 can be one, two, or more, etc., which can be set according to actual needs, and the embodiment of the utility model does not make specific limitations on this.

[0115] Specifically, Figure 4 , showing a situation where there are four third guide shafts 37 , and the four third guide shafts 37 are evenly arranged at the four vertex corners of the lens fixing seat 4 .

[0116] Optionally, the three-dimensional adjustment mechanism further includes a third control module, and the Z-axis motion module 3 may further include a third initial positioning component, which may be specifically arranged with reference to the first initial positioning component in the X-axis motion module 1, so as to achieve initial positioning of the lens 5 in the Z-axis direction. Figure 4As shown, the third initial positioning component may include a third photoelectric sensor 38, a fifth baffle 39 and a sixth baffle; the third control module is connected to the third photoelectric sensor 38, and the third photoelectric sensor 38 can be fixedly connected to the lens fixing seat 4; the fifth baffle 39 and the sixth baffle can be arranged at intervals along the Z-axis direction, and are both fixedly connected to the third guide shaft 37; the fifth baffle 39 and the sixth baffle are both used to block the light emitted by the third photoelectric sensor 38, the third control module is electrically connected to the third photoelectric sensor 38 and is used to obtain the fifth extreme position and the sixth extreme position of the third photoelectric sensor, the third control module is used to obtain the third initial position according to the fifth extreme position and the sixth extreme position, and the third initial position is the middle position between the fifth extreme position and the sixth extreme position; the third control module is connected to the third motor, and is used to drive the third photoelectric sensor 38 back to the third initial position through the third motor.

[0117] In the embodiment of the utility model, by adjusting the third photoelectric sensor 38 to the third initial position, the lens 5 can be driven to return to the initial position on the Y-axis, thereby improving the accuracy of adjusting the position of the lens 5 on the Y-axis.

[0118] Specifically, the fifth limit position and the sixth limit position are two limit positions of the third photoelectric sensor 38 on the Z axis, and the third photoelectric sensor 38 can switch between the fifth limit position and the sixth limit position along the Z axis.

[0119] Specifically, the fifth baffle 39 may correspond to the fifth limit position, the sixth baffle may correspond to the sixth limit position, or vice versa. It can be set according to actual needs, and the embodiment of the utility model does not make specific limitations on this.

[0120] Specifically, in the embodiment of the utility model, each time before starting to adjust the position of the lens 3 in space, the first control module can control the first photoelectric sensor 14 to return to its first initial position on the X-axis, the second control module can control the second photoelectric sensor 26 to return to its second initial position on the Y-axis, and the third control module can control the third photoelectric sensor 38 to return to its third initial position on the Z-axis, thereby driving the lens 5 to return to its initial position in the three-dimensional space, and then adjusting the lens 5 from the initial position to the required position, thereby improving the accuracy of adjusting the position of the lens 3.

[0121] Optionally, the three-dimensional adjustment mechanism may further include a first locking structure, a second locking structure and a third locking structure; the first locking structure is respectively connected to the lens fixing seat 4 and the Z-axis motion module 3, and is used to lock or unlock the lens fixing seat 4 and the Z-axis motion module 3; the second locking structure is respectively connected to the Z-axis motion module 3 and the Y-axis motion module 2, and is used to lock or unlock the Z-axis motion module 3 and the Y-axis motion module 2; the third locking structure is respectively connected to the Y-axis motion module 2 and the X-axis motion module 1, and is used to lock or unlock the Y-axis motion module 2 and the X-axis motion module 1, so that before adjusting the lens 5, the first locking structure, the second locking structure and the third locking structure can be used to unlock; after adjusting the lens 5, the first locking structure, the second locking structure and the third locking structure can be used to lock to fix the position of the lens 5.

[0122] Specifically, the structural composition of the first locking structure, the second locking structure and the third locking structure can be the same or similar. The embodiment of the utility model only takes the first locking structure as an example for illustration, and other situations can refer to the settings. The first locking structure may include a limit groove and a limit column, the limit groove and the limit column are correspondingly arranged, and the limit column can be embedded in the limit groove to achieve fixation, one of the limit groove and the limit column can be arranged on the side of the lens fixing seat 4 facing the Z-axis motion module 3, and the other can be arranged on the side of the Z-axis motion module 3 facing the lens fixing seat 4. Among them, the limit groove and the limit hole can be replaced by a limit hole, which can be specifically set according to actual needs, and the embodiment of the utility model does not make specific limitations on this.

[0123] Optionally, the lens fixing seat 4 may be provided with a mounting hole 42 for mounting the lens 5; the mounting hole 42 may be conductive along the X-axis direction or conductive along the Y-axis direction.

[0124] In the embodiment of the utility model, the mounting hole 42 is provided on the lens fixing seat 4, which can improve the convenience of mounting the lens 5. The mounting hole 42 can be connected along the X-axis direction or along the Y-axis direction, which can improve the convenience of shooting with the lens 5.

[0125] The fundus camera described in the embodiment of the utility model has at least the following advantages:

[0126] In the embodiment of the utility model, the lens fixing seat is connected to the Z-axis motion module by transmission, and can move relative to the Z-axis motion module along the Z-axis direction; the Z-axis motion module is meshed and connected to the Y-axis motion module, and can move relative to the Y-axis motion module along the Y-axis direction; the Y-axis motion module is meshed and connected to the X-axis motion module, and can move relative to the X-axis motion module along the X-axis direction, and the X-axis, the Y-axis, and the Z-axis are three mutually perpendicular axes, so that the lens fixing seat can simultaneously complete the movement in the X-axis direction, the Y-axis direction, and the Z-axis direction. Since the lens fixing seat is used to install the lens, the shooting effect of the lens can be improved by controlling the movement of the lens fixing seat in the three directions of the X-axis, the Y-axis, and the Z-axis. In an embodiment of the utility model, the Z-axis motion module is meshedly connected with the Y-axis motion module, and the Y-axis motion module is meshedly connected with the X-axis motion module. Moreover, the X-axis motion module 1, the Y-axis motion module 2 and the Z-axis motion module 3 can be installed in a modular manner, and the transmission method is relatively simple, which can reduce the assembly complexity of the three-dimensional adjustment mechanism, thereby improving the assembly efficiency of the three-dimensional adjustment mechanism and reducing the manufacturing cost of the three-dimensional adjustment mechanism.

[0127] In a second aspect, the embodiment of the utility model further discloses a fundus camera, which may specifically include the three-dimensional adjustment mechanism of the lens 5 mentioned above.

[0128] Specifically, the fundus camera is intelligent and efficient. The fundus camera includes a lens 5, which is a lens 5 component used for performing shooting tasks. The lens 5 can be installed on the three-dimensional adjustment mechanism lens fixing seat 4 to achieve position adjustment of the lens 5 in three directions of X-axis, Y-axis and Z-axis.

[0129] The fundus camera described in the embodiment of the utility model has at least the following advantages:

[0130] In the embodiment of the utility model, the lens fixing seat is connected to the Z-axis motion module by transmission, and can move relative to the Z-axis motion module along the Z-axis direction; the Z-axis motion module is meshed and connected to the Y-axis motion module, and can move relative to the Y-axis motion module along the Y-axis direction; the Y-axis motion module is meshed and connected to the X-axis motion module, and can move relative to the X-axis motion module along the X-axis direction, and the X-axis, the Y-axis, and the Z-axis are three mutually perpendicular axes, so that the lens fixing seat can simultaneously complete the movement in the X-axis direction, the Y-axis direction, and the Z-axis direction. Since the lens fixing seat is used to install the lens, the shooting effect of the lens can be improved by controlling the movement of the lens fixing seat in the three directions of the X-axis, the Y-axis, and the Z-axis. In an embodiment of the utility model, the Z-axis motion module is meshedly connected with the Y-axis motion module, and the Y-axis motion module is meshedly connected with the X-axis motion module. Moreover, the X-axis motion module 1, the Y-axis motion module 2 and the Z-axis motion module 3 can be installed in a modular manner, and the transmission method is relatively simple, which can reduce the assembly complexity of the three-dimensional adjustment mechanism, thereby improving the assembly efficiency of the three-dimensional adjustment mechanism and reducing the manufacturing cost of the three-dimensional adjustment mechanism.

[0131] Although the preferred embodiments of the utility model embodiments have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0132] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0133] The three-dimensional adjustment mechanism of a lens and a fundus camera provided by the utility model are introduced in detail above. The principle and implementation mode of the utility model are explained in this article by using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A three-dimensional adjustment mechanism for a lens, characterized in that: include: X-axis motion module, Y-axis motion module, Z-axis motion module and a lens fixing seat for mounting a lens; wherein, The lens fixing seat is in transmission connection with the Z-axis motion module and moves relative to the Z-axis motion module along the Z-axis direction; The Z-axis motion module is meshedly connected with the Y-axis motion module and moves relative to the Y-axis motion module along the Y-axis direction; The Y-axis motion module is meshedly connected with the X-axis motion module and moves relative to the X-axis motion module along the X-axis direction, wherein the X-axis, the Y-axis and the Z-axis are three mutually perpendicular axes.

2. The three-dimensional adjustment mechanism according to claim 1, characterized in that: The X-axis motion module includes: a first substrate and a first rack, and the Y-axis motion module includes: a second substrate, a first gear and a first motor; The first rack is laid along the X-axis direction on a side of the first substrate facing the second substrate; The first gear is connected to a side of the second substrate facing the first substrate, and the first gear is meshed and connected with the first rack; The first motor is disposed on the second substrate and connected to the first gear, and is used to drive the first gear to move relative to the first rack along the X-axis direction.

3. The three-dimensional adjustment mechanism according to claim 2, characterized in that: The X-axis motion module includes a first guide shaft; The first guide shaft is arranged along the X-axis direction, and the first guide shaft is fixedly connected to a side of the first substrate facing the second substrate; The first guide shaft passes through the second substrate and is slidably connected to the second substrate along the X-axis direction.

4. The three-dimensional adjustment mechanism according to claim 3, characterized in that: Supports are respectively provided at two ends of the first substrate along the X-axis direction; Both ends of the first guide shaft are fixedly connected to the support respectively; A protrusion is provided at the end of the second substrate, and the protrusion abuts against the first substrate, so that the second substrate is spaced apart from the first substrate; The protruding portion is provided with a through hole for penetrating the first guide shaft.

5. The three-dimensional adjustment mechanism according to claim 2, characterized in that: The three-dimensional adjustment mechanism further includes a first control module, and the X-axis motion module further includes a first photoelectric sensor, a first baffle and a second baffle; The first control module is connected to the first photoelectric sensor, and the first photoelectric sensor is fixedly connected to the second substrate; The first blocking piece and the second blocking piece are both fixedly connected to a side of the first substrate facing the second substrate, and the first blocking piece and the second blocking piece are spaced apart along the X-axis direction; The first baffle and the second baffle are both used to block the light emitted by the first photoelectric sensor, the first control module is electrically connected to the first photoelectric sensor and is used to obtain a first limit position and a second limit position of the first photoelectric sensor, the first control module is used to obtain first initial position information according to the first limit position and the second limit position, and the first initial position is an intermediate position between the first limit position and the second limit position; The first control module is connected to the first motor, and is used for driving the first photoelectric sensor to return to the first initial position through the first motor.

6. The three-dimensional adjustment mechanism according to claim 2, characterized in that: The Z-axis motion module includes: a third substrate, a second gear and a second motor; A second rack is disposed on a side of the second substrate away from the first substrate, and the second rack is disposed along the Y-axis direction; The second gear is connected to a side of the third substrate facing the second substrate, and the second gear is meshed and connected with the second rack; The second motor is disposed on the third substrate and connected to the second gear, and is used to drive the second gear to move relative to the second rack along the Y-axis direction.

7. The three-dimensional adjustment mechanism according to claim 6, characterized in that: The Y-axis motion module includes a second guide shaft; The second guide shaft is arranged along the Y-axis direction, and the second guide shaft is fixedly connected to a side of the second substrate facing the third substrate; The second guide shaft passes through the third substrate and is slidably connected to the third substrate along the Y-axis direction.

8. The three-dimensional adjustment mechanism according to claim 6, characterized in that: The three-dimensional adjustment mechanism further includes a second control module, and the Y-axis motion module further includes a second photoelectric sensor, a third baffle and a fourth baffle; The second control module is connected to the second photoelectric sensor, and the second photoelectric sensor is fixedly connected to a side of the second substrate facing the third substrate; The third blocking piece and the fourth blocking piece are both fixedly connected to a side of the third substrate facing the second substrate, and the third blocking piece and the fourth blocking piece are spaced apart along the Y-axis direction; The third baffle and the fourth baffle are both used to block the light emitted by the second photoelectric sensor, the second control module is electrically connected to the second photoelectric sensor and is used to obtain a third limit position and a fourth limit position of the second photoelectric sensor, the second control module is used to obtain second initial position information according to the third limit position and the fourth limit position, and the second initial position is an intermediate position between the third limit position and the fourth limit position; The second control module is connected to the second motor, and is used for driving the second photoelectric sensor to return to the second initial position through the second motor.

9. The three-dimensional adjustment mechanism according to claim 6, characterized in that: The Z-axis motion module further includes a screw and a third motor, and the lens fixing seat includes a connecting portion; The screw extends along the Z-axis direction; The third motor is fixedly connected to a side of the third substrate away from the second substrate and is connected to the screw rod to drive the screw rod to rotate; The connecting portion is sleeved outside the screw rod, and the connecting portion is threadedly connected to the screw rod.

10. The three-dimensional adjustment mechanism according to claim 9, characterized in that: The Z-axis motion module also includes a fixed plate and a third guide shaft; The fixing plate and the third substrate are fixedly connected and spaced apart; The third guide shaft is arranged along the Z-axis direction, and one end of the third guide shaft is fixedly connected to the third substrate, and the other end of the third guide shaft is fixedly connected to the fixed plate; The third guide shaft passes through the lens fixing seat and is slidably connected with the lens fixing seat.

11. The three-dimensional adjustment mechanism according to claim 10, characterized in that: The three-dimensional adjustment mechanism further includes a third control module, and the Z-axis motion module further includes a third photoelectric sensor, a fifth baffle and a sixth baffle; The third control module is connected to the third photoelectric sensor, and the third photoelectric sensor is fixedly connected to the lens fixing seat; The fifth baffle and the sixth baffle are both fixedly connected to the third guide shaft, and the fifth baffle and the sixth baffle are spaced apart along the Z-axis direction; The fifth baffle and the sixth baffle are both used to block the light emitted by the third photoelectric sensor, the third control module is electrically connected to the third photoelectric sensor and is used to obtain the fifth limit position and the sixth limit position of the third photoelectric sensor, and the third control module is used to obtain third initial position information according to the fifth limit position and the sixth limit position, and the third initial position is the middle position between the fifth limit position and the sixth limit position; The third control module is connected to the third motor and is used for driving the third photoelectric sensor to return to the third initial position through the third motor.

12. The three-dimensional adjustment mechanism according to claim 1, characterized in that: The three-dimensional adjustment mechanism also includes a first locking structure, a second locking structure and a third locking structure; The first locking structure is connected to the lens fixing seat and the Z-axis motion module respectively, and is used to lock or unlock the lens fixing seat and the Z-axis motion module; The second locking structure is connected to the Z-axis motion module and the Y-axis motion module respectively, and is used to lock or unlock the Z-axis motion module and the Y-axis motion module; The second locking structure is connected to the Y-axis motion module and the X-axis motion module respectively, and is used to lock or unlock the Y-axis motion module and the X-axis motion module.

13. A fundus camera, characterized in that: A three-dimensional adjustment mechanism for a lens comprising any one of claims 1-12.

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