Lens switching device

Abstract

The invention relates to the technical field of ophthalmic equipment, in particular to a lens switching device which comprises a base, a mounting seat, a transmission mechanism and a driving mechanism. The mounting seat is movably connected to the base along a first direction; the mounting base comprises a plurality of mounting parts arranged at intervals in the first direction, and the mounting parts are used for mounting lenses. The transmission mechanism comprises a driving piece and a driven piece which are oppositely arranged in the first direction. One end of the driven part is in contact with the circumferential side wall of the driving part, and the other end of the driven part is connected to the mounting seat; the circumferential side wall of the driving part comprises a plurality of working areas which are arranged at intervals in the circumferential direction of the driving part, and the distances between any two working areas and the rotating center of the driving part are different. The driving mechanism is used for driving the driving part to rotate relative to the base, and the driven part moves in the first direction. According to the lens switching device, the switching position of the lenses can be accurately controlled.

Description

Technical Field

[0001] The present application relates to the technical field of ophthalmic equipment, and in particular to a lens switching device. Background Art

[0002] At present, lenses are an indispensable optical component of ophthalmic equipment. When performing vision examinations on patients, ophthalmic equipment needs to use different types of lenses to enable more comprehensive eye screening for people with different pathological conditions.

[0003] The existing lens switching device includes a lens mounting frame, on which a plurality of different lenses are arranged. The lenses to be used are switched to appropriate positions by means of rotation or movement, thereby achieving switching of different lenses.

[0004] However, it is difficult to accurately control the position of the lens switching by directly switching multiple different lenses. Summary of the invention

[0005] Based on this, it is necessary to provide a lens switching device to solve the problem that it is difficult to accurately control the position of lens switching.

[0006] A lens switching device, comprising:

[0007] Pedestal;

[0008] The mounting seat is movably connected to the base along a first direction; the mounting seat comprises a plurality of mounting parts spaced apart along the first direction, the mounting parts being used to mount the lens;

[0009] The transmission mechanism comprises a driving member and a driven member arranged opposite to each other along a first direction; one end of the driven member contacts the circumferential side wall of the driving member, and the other end of the driven member is connected to the mounting seat; the circumferential side wall of the driving member comprises a plurality of working areas, the plurality of working areas are arranged at intervals along the circumference of the driving member, and the distances between any two working areas and the rotation center of the driving member are different;

[0010] The driving mechanism is used to drive the active member to rotate relative to the base and the driven member to move along the first direction.

[0011] In some embodiments, the circumferential side wall of the active member located in the working area is an arc wall, and the distance between any point on the arc wall and the rotation center of the active member is the same.

[0012] In some embodiments, the arc wall includes a first point and a second point, and the first point and the second point are located at two ends of the arc wall along the circumference of the active member;

[0013] The angle between the line between the first point and the rotation center of the active member and the line between the second point and the rotation center of the active member is 5°-15°.

[0014] In some embodiments, the base includes a first base body and a second base body; an extension direction of the first base body intersects with an extension direction of the second base body;

[0015] The mounting seat, the transmission mechanism and the second seat body are all arranged on the same side of the first seat body;

[0016] The mounting seat is movably connected to the second seat body along a first direction.

[0017] In some embodiments, one of the mounting seat and the second seat body is provided with a protrusion, and the other is provided with a groove, the groove extends along the first direction, and the protrusion is movably disposed in the groove.

[0018] In some embodiments, the lens switching device further comprises:

[0019] The elastic member is arranged on the side of the first seat body facing the second seat body; one end of the elastic member is connected to the first seat body, and the other end of the elastic member is connected to the mounting seat, and the elastic member is used to provide elastic force to the mounting seat toward the first seat body.

[0020] In some embodiments, the lens switching device further comprises:

[0021] A limiting member, arranged on the mounting seat;

[0022] The detection member is arranged on the second seat body and is used for detecting the position of the limiting member relative to the first seat body along the first direction.

[0023] In some embodiments, the detection element includes a light emitting unit and a light receiving unit, a gap is provided between the light emitting unit and the light receiving unit, and the light emitted by the light emitting unit is directed toward the light receiving unit;

[0024] The lens switching device includes a first state, in which the limiting member is arranged in the gap to block the light emitted by the light emitting unit, and the follower member contacts the circumferential side wall of the active member of one of the working areas.

[0025] In some embodiments, the active member is configured as a cam, and the cam is rotatable relative to the base;

[0026] The follower includes a bracket, a connecting shaft, a roller and a limiting portion, one end of the bracket is connected to the connecting shaft, and the other end of the bracket is connected to the mounting seat; the limiting portion is connected to an end of the connecting shaft away from the bracket; the roller is sleeved on the connecting shaft and arranged between the limiting portion and the bracket, and the roller contacts the circumferential side wall of the cam.

[0027] In some embodiments, the driving mechanism includes a driving member, an encoder, and a fixing seat;

[0028] The active member is connected to the power output end of the driving member; the encoder is connected to the driving member; the fixing seat is arranged on the side of the base facing the driving member, and the fixing seat is connected to the driving member and the base.

[0029] The above-mentioned lens switching device includes a base, a mounting seat, a transmission mechanism and a driving mechanism. The mounting seat is movably connected to the base along a first direction; the mounting seat includes a plurality of mounting parts arranged at intervals along the first direction, and the mounting parts are used to install the lenses. The transmission mechanism includes an active member and a driven member arranged relatively to each other along the first direction; one end of the driven member contacts the circumferential side wall of the active member, and the other end of the driven member is connected to the mounting seat; the circumferential side wall of the active member includes a plurality of working areas, and the plurality of working areas are arranged at intervals along the circumference of the active member, and the distances between any two working areas and the rotation center of the active member are different. The driving mechanism is used to drive the active member to rotate relative to the base, and the driven member moves along the first direction.

[0030] The lens switching device of the present application has a circumferential side wall of the active member including a plurality of working areas, and the plurality of working areas are arranged at intervals along the circumference of the active member. The distances between any two working areas and the rotation center of the active member are different. Therefore, when the driving mechanism drives the active member to rotate relative to the base, the plurality of working areas of the active member rotate to different positions relative to the base.

[0031] At the same time, since the active member and the driven member are arranged relatively to each other along the first direction, one end of the driven member contacts the circumferential side wall of the active member, and the other end of the driven member is connected to the mounting seat, and the mounting seat includes a plurality of mounting portions arranged at intervals along the first direction. Therefore, when the plurality of working areas of the active member rotate to different positions relative to the base, the active member drives the driven member to move to different positions along the first direction, thereby driving the mounting portion on the mounting seat to move to different positions in the first direction.

[0032] Furthermore, the mounting portion is used to mount the lens, and the lens position can be switched by rotating the multiple working areas of the active component to different positions relative to the base. Moreover, the switching position of the lens can be controlled by only controlling the rotation position of the different working areas of the active component, thereby accurately controlling the switching position of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the structure of a lens switching device in one embodiment of the present application.

[0034] Figure 2 for Figure 1 Front view of the middle lens switching device.

[0035] Figure 3 Schematic diagram of the structure of an active component in an embodiment of the present application.

[0036] Figure 4 Schematic diagram of the rotation angle of the active member and the distance between the working area and the rotation center of the active member in one embodiment of the present application.

[0037] Figure 5 FIG. 4 is another structural schematic diagram of a lens switching device in an embodiment of the present application.

[0038] Figure 6 for Figure 5 A partial enlarged view of point M in the middle.

[0039] Figure 7 for Figure 1 Side view of the middle lens switching device without the drive mechanism.

[0040] Figure 8 for Figure 2 A local enlarged view of point N in the middle.

[0041] Description of reference numerals:

[0042] 1. Lens switching device;

[0043] 11. Base; 12. Mounting seat; 13. Transmission mechanism; 14. Driving mechanism; 15. Elastic member; 16. Limiting member; 17. Detection member;

[0044] 111. first seat body; 112. second seat body;

[0045] 1121, bulge;

[0046] 121. mounting portion; 122. groove;

[0047] 1211, first mounting portion; 1212, second mounting portion; 1213, third mounting portion;

[0048] 131, active part; 132, driven part;

[0049] 1311, work area;

[0050] 1311a, first working area; 1311b, second working area; 1311c, third working area;

[0051] 1321, bracket; 1322, roller; 1323, limit part;

[0052] 141. driving member; 142. fixing seat;

[0053] Point O, the rotation center of the active member;

[0054] Point A, the first point of the first working area; Point B, the second point of the first working area;

[0055] Point C, the first point of the second working area; Point D, the second point of the second working area;

[0056] Point E is the first point of the third working area; Point F is the second point of the third working area. DETAILED DESCRIPTION

[0057] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0058] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0059] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0061] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0062] See also Figure 1 , Figure 2 and Figure 3 As shown. A lens switching device 1 provided in one embodiment of the present application includes a base 11, a mounting seat 12, a transmission mechanism 13 and a driving mechanism 14. The mounting seat 12 is movably connected to the base 11 along a first direction; the mounting seat 12 includes a plurality of mounting portions 121 spaced apart along the first direction, and the mounting portions 121 are used to mount the lens. The transmission mechanism 13 includes an active member 131 and a driven member 132 that are relatively disposed along the first direction; one end of the driven member 132 is in contact with the circumferential side wall of the active member 131, and the other end of the driven member 132 is connected to the mounting seat 12; the circumferential side wall of the active member 131 includes a plurality of working areas 1311, and the plurality of working areas 1311 are spaced apart along the circumference of the active member 131, and the distances between any two working areas 1311 and the rotation center of the active member 131 are different. The driving mechanism 14 is used to drive the active member 131 to rotate relative to the base 11, and the driven member 132 to move along the first direction.

[0063] It should be noted that the first direction is Figure 1 The X direction in .

[0064] It should be noted that the lenses in the present application can be any optical lenses, such as convex lenses, concave lenses, polarized lenses or filter lenses, etc., wherein the mounting portion 121 of the mounting seat 12 in the present application only needs to install the corresponding lenses according to the usage requirements, and the present application does not limit the type and function of the lenses installed in the mounting portion 121.

[0065] The base 11 is used as a supporting structure of the lens switching device 1 to support and connect the mounting seat 12 and the driving mechanism 14. The driving mechanism 14 is used as a power structure of the lens switching device 1 to provide power for the movement of the active member 131 in the transmission mechanism 13.

[0066] Specifically, since the circumferential side wall of the active member 131 includes a plurality of working areas 1311, the plurality of working areas 1311 are arranged at intervals along the circumference of the active member 131, and the distances between any two working areas 1311 and the rotation center of the active member 131 are different. It can be understood that the rotation center of the active member 131 is fixed relative to the base 11, and in the process of the driving mechanism 14 driving the active member 131 to rotate relative to the base 11, the plurality of working areas 1311 of the active member 131 rotate to different positions relative to the base 11.

[0067] At the same time, since the active member 131 and the driven member 132 are arranged relatively to each other along the first direction, one end of the driven member 132 contacts the circumferential side wall of the active member 131, and the other end of the driven member 132 is connected to the mounting seat 12, and the mounting seat 12 includes a plurality of mounting portions 121 spaced apart along the first direction. Therefore, when the plurality of working areas 1311 of the active member 131 rotate to different positions relative to the base 11, the active member 131 drives the driven member 132 to move to different positions along the first direction, thereby driving the mounting portion 121 on the mounting seat 12 to move to different positions in the first direction.

[0068] Furthermore, the mounting portion 121 is used to mount the lens, and the lens position can be switched by rotating the multiple working areas 1311 of the active component 131 to different positions relative to the base 11. Moreover, the switching position of the lens can be controlled by only controlling the rotation position of the different working areas 1311 of the active component 131, thereby accurately controlling the switching position of the lens.

[0069] It can be understood that the distance difference between any two working areas 1311 and the rotation center of the active member 131 is the distance that the active member 131 drives the driven member 132 to move along the first direction, that is, the distance that the mounting portion 121 on the mounting seat 12 moves along the first direction, so that the operator can ensure that the distance difference between any two adjacent working areas 1311 and the rotation center of the active member 131 is equal to the spacing between any two adjacent mounting portions 121 on the mounting seat 12 along the first direction, so that by controlling the rotation position of different working areas 1311 of the active member 131, the position of the lens switching can be accurately controlled, thereby ensuring the accuracy and reliability of the lens position switching.

[0070] In addition, the present application can realize the movement of the mounting seat 12 by driving the rotation of the active member 131. Since the directions of the rotation and the movement are different, the active member 131 can be set on any side of the mounting seat 12, so that the relative position of the active member 131 and the mounting seat 12 can be reasonably set according to actual use requirements, and it is not limited by the position requirements, so that the lens switching device 1 can be prevented from being affected by factors such as space, and the space utilization rate of the lens switching device 1 can be improved.

[0071] In addition, since the present application only needs to control the rotational movement of the active member 131 to realize the movement of the mounting seat 12, the position of the lens switching can be accurately controlled, that is, the present application has fewer parts, a simple structure, convenient installation, and high maintainability. At the same time, since the present application only needs to control the rotational movement of the active member 131 to realize the movement of the mounting seat 12, the efficiency of lens switching can be improved.

[0072] In this way, the lens switching device 1 of the present application can achieve the simplest structure possible while taking into account the efficiency of lens switching, the accuracy of lens switching and the space utilization, so as to facilitate the use by the operator.

[0073] Exemplarily, the present application is explained by taking the switching of filter lenses as an example. During fundus examination, the fundus of the patient needs to be observed through the lens switching device 1. Specifically, the incident laser is irradiated to the fundus of the patient, and the reflected light of the fundus of the patient is emitted through the lens. The mounting portion 121 is used to mount different filter lenses.

[0074] For the convenience of explanation, the present application is explained by taking a red light filter lens and a blue light filter lens as examples. During fundus examination, the reflected light of the fundus will be emitted from a fixed position of the mounting portion 121 along a direction intersecting with the first direction. When the reflected light needs to be filtered with a red light filter lens, it is only necessary to control the active component 131 to rotate to the working area 1311 corresponding to the red light filter lens, and the required red light filter lens can be switched. Similarly, when the light needs to be filtered with a blue light filter lens, it is only necessary to control the active component 131 to rotate to the working area 1311 corresponding to the blue light filter lens, and the required blue light filter lens can be switched, thereby facilitating the operator's operation and accurately controlling the position of the lens switching.

[0075] It should be noted that this embodiment is described by taking two lenses as an example. Of course, the lenses in this application can be three or more. Similarly, in order to control the position switching of three or more lenses, this application only needs to set three or more working areas 1311 on the active member 131. Here, the number of lenses will not be repeated.

[0076] In some embodiments, see Figure 3As shown, illustratively, in this embodiment, three working areas 1311 are set on the active member 131, and the three working areas 1311 are respectively a first working area 1311a, a second working area 1311b and a third working area 1311c, wherein the circumferential side wall of the active member 131 located in the working area 1311 is an arc wall, and the distances between the arc walls corresponding to the first working area 1311a, the second working area 1311b and the third working area 1311c and the rotation center of the active member 131 are different, and the distances between any point on the arc wall corresponding to the same working area 1311 (i.e., any one of the first working area 1311a, the second working area 1311b and the third working area 1311c) and the rotation center of the active member 131 are the same.

[0077] It should be noted that the distance between any point on the arc wall and the rotation center of the active member 131 in the above description is the same, which refers to the distance between any point on the arc wall corresponding to the same working area 1311 and the rotation center of the active member 131, rather than the distance between any point on the arc wall corresponding to different working areas 1311 and the rotation center of the active member 131.

[0078] It should be noted that the arc wall is a side wall of the active component 131 that is arc-shaped in the circumferential direction.

[0079] Since the distance between any point on the arc wall corresponding to the same working area 1311 and the rotation center of the active member 131 is the same, that is, when any point of the working area 1311 of the active member 131 contacts the follower 132, the position of the follower relative to the base 11 does not change, that is, no matter where the active member 131 rotates to in the working area 1311, the position of the follower 132 relative to the base 11 along the first direction does not change, and thus the position of the mounting seat 12 relative to the base 11 along the first direction does not change, that is, in the same working area 1311, when the active member 131 rotates within the arc wall range of the working area 1311, the position of the mounting seat 12 does not change.

[0080] In this way, after the lens switches to a certain position along the first direction, when the active member 131 continues to be driven to rotate, since the rotation process still corresponds to the arc wall of the working area 1311, during the continued rotation, the distance between any point on the arc wall of the working area 1311 and the rotation center of the active member 131 is the same. When any point of the working area 1311 of the active member 131 contacts the driven member 132, the position of any point of the working area 1311 relative to the base 11 does not change, and the position of the lens relative to the base 11 along the first direction does not change, thereby improving the redundancy of the lens switching process, improving the control accuracy of the lens position switching, and facilitating the control of the lens switching position.

[0081] Exemplarily, in this embodiment, three working areas 1311 are provided on the active member 131 , and three mounting portions 121 are provided on the mounting seat 12 . The three working areas 1311 are provided correspondingly to the three mounting portions 121 .

[0082] The three working areas 1311 are respectively the first working area 1311a, the second working area 1311b and the third working area 1311c, the three mounting parts 121 are respectively the first mounting part 1211, the second mounting part 1212 and the third mounting part 1213, the first mounting part 1211 is used to mount the first lens, the second mounting part 1212 is used to mount the second lens, and the third mounting part 1213 is used to mount the third lens. Figure 3 The three arc-shaped dotted lines in are arcs of different radii with the rotation center of the active member 131 as the origin, and the three arcs respectively overlap with partial areas of the circumferential side wall of the active member 131 to form a first working area 1311a, a second working area 1311b and a third working area 1311c.

[0083] Specifically, when the active member 131 rotates to any position of the first working area 1311a, since the distance between any point in the first working area 1311a and the rotation center of the active member 131 is the same, that is, when any point in the first working area 1311a contacts the follower 132, the position of the follower 132 relative to the base 11 does not change, the position of the first mounting portion 1211 does not change, and the position of the first lens relative to the base 11 does not change, thereby ensuring that in the first working area 1311a, the position of the first lens relative to the base 11 does not change, thereby improving the switching accuracy of the first lens during the switching process.

[0084] Furthermore, during the process of the active member 131 rotating from the first working area 1311a to the second working area 1311b, since the distances between the first working area 1311a and the second working area 1311b and the rotation center of the active member 131 are different, at this time, the follower 132 switches from contact with the first working area 1311a to contact with the second working area 1311b, and the position of the follower 132 relative to the base 11 changes. The follower 132 is connected to the mounting seat 12, so that the position of the mounting seat 12 relative to the base 11 changes, and then the positions of the first mounting portion 1211, the second mounting portion 1212 and the third mounting portion 1213 are all changed, and the positions of the first lens, the second lens and the third lens relative to the base 11 are all changed.

[0085] Similarly, when the active member 131 rotates to any position of the second working area 1311b, since the distance between any point in the second working area 1311b and the rotation center of the active member 131 is the same, that is, when any point in the second working area 1311b contacts the follower 132, the position of the follower 132 relative to the base 11 does not change, the position of the second mounting portion 1212 does not change, and the position of the second lens relative to the base 11 does not change, thereby ensuring that in the second working area 1311b, the position of the second lens relative to the base 11 does not change, thereby improving the switching accuracy of the second lens during the switching process.

[0086] The movement of the third working area 1311c, the third mounting portion 1213 and the third lens is similar to the movement of the second working area 1311b, the second mounting portion 1212 and the second lens, and the movement of the third working area 1311c, the third mounting portion 1213 and the third lens will not be described in detail herein.

[0087] In this way, since in a certain working area 1311, the distance between any point on the arc wall of the active member 131 located in the working area 1311 and the rotation center of the active member 131 is the same, when the active member 131 rotates in the working area 1311, during the continued rotation, the distance between any point on the arc wall of the working area 1311 and the rotation center of the active member 131 is the same, the position of the follower 132 relative to the base 11 does not change, and the position of the lens relative to the base 11 along the first direction does not change, thereby improving the redundancy in the lens switching process and facilitating the control of the lens switching position.

[0088] In some embodiments, see Figure 3 and Figure 4 As shown, the arc wall corresponding to each working area includes a first point and a second point. For any working area, the first point and the second point are located at both ends of the arc wall of the working area along the circumference of the active member 131. The angle between the line between the first point and the rotation center of the active member 131 and the line between the second point and the rotation center of the active member 131 is 5°-15°.

[0089] It should be noted that Figure 4 The X-axis in is the rotation angle of the active member 131, Figure 4 The Y axis in FIG. 1 is the distance between the contact point between the active member 131 and the driven member 132 and the rotation center of the active member 131 .

[0090] For the convenience of explanation, by way of example, in this embodiment, three working areas 1311 are provided on the active member 131 , and three mounting portions 121 are provided on the mounting seat 12 . The three working areas 1311 are provided correspondingly to the three mounting portions 121 .

[0091] The three working areas 1311 are respectively the first working area 1311a, the second working area 1311b and the third working area 1311c, the three mounting parts 121 are respectively the first mounting part 1211, the second mounting part 1212 and the third mounting part 1213, the first mounting part 1211 is used to mount the first lens, the second mounting part 1212 is used to mount the second lens, and the third mounting part 1213 is used to mount the third lens. Figure 3 The three arc-shaped dotted lines in are arcs of different radii with the rotation center of the active member 131 as the origin, and the three arcs respectively overlap with partial areas of the circumferential side wall of the active member 131 to form a first working area 1311a, a second working area 1311b and a third working area 1311c.

[0092] Among them, the rotation center of the active part is Figure 3 The first point of the first working area 1311a is Figure 3 Point A in the first working area 1311a is Figure 3 Point B in the second working area 1311b; the first point of the second working area 1311b is Figure 3 The second point of the second working area 1311b is Figure 3 Point D in the third working area 1311c; the first point of the third working area 1311c is Figure 3 The second point of the third working area 1311c is Figure 3 Point F in.

[0093] Figure 3 θ1 in which is the angle between the line between the first point of the first working area 1311a and the rotation center of the active member 131 and the line between the second point of the first working area 1311a and the rotation center of the active member 131; Figure 3 θ2 in which is the angle between the line between the first point of the second working area 1311b and the rotation center of the active member 131 and the line between the second point of the second working area 1311b and the rotation center of the active member 131; Figure 3 θ3 in which is the angle between the line between the first point of the third working area 1311 c and the rotation center of the active member 131 and the line between the second point of the third working area 1311 c and the rotation center of the active member 131 .

[0094] For example, when θ1 is 0°, Figure 3 The first point (ie, point A) of the first working area 1311 a of the middle active member 131 contacts the circumferential side wall of the driven member 132 .

[0095] Specifically, when θ1 is 0-10°, that is, the angle between the line between the first point of the first working area 1311a and the rotation center of the active member 131 and the line between the second point of the first working area 1311a and the rotation center of the active member 131 is 0-10°. At this time, no matter when the active member 131 rotates to any point in the first working area 1311a, the distance between the point where the first working area 1311a and the driven member 132 contact with the rotation center of the active member 131 is 5 mm (this size is only an example size and the operator can adjust it according to actual conditions), that is, the position of the driven member 132 relative to the base 11 does not change, the position of the first mounting portion 1211 does not change, and the position of the first lens relative to the base 11 does not change, thereby ensuring that in the first working area 1311a, the position of the first lens relative to the base 11 does not change, thereby improving the redundancy of the first lens switching process.

[0096] Further, when the active member 131 continues to rotate, the active member 131 rotates to any point between the first working area 1311a and the second working area 1311b. At this time, the distance between any point between the first working area 1311a and the second working area 1311b of the active member 131 and the rotation center of the active member 131 is different from the distance to any point in the first working area 1311a of the active member 131, that is, the position of the driven member 132 relative to the base 11 changes, and the position of the mounting seat 12 relative to the base 11 changes, so that the positions of the first mounting portion 1211, the second mounting portion 1212 and the third mounting portion 1213 are all changed, and the positions of the first lens, the second lens and the third lens relative to the base 11 are all changed.

[0097] Until the active member 131 rotates to 92.5°, at this time, the first point of the second working area 1311b of the active member 131 contacts the circumferential side wall of the driven member 132, and the distance between the first point of the second working area 1311b and the rotation center of the active member 131 changes to 15mm.

[0098] Similarly, when θ2 is 92.5°-102.5°, that is, the angle between the line between the first point of the second working area 1311b and the rotation center of the active member 131 and the line between the second point of the second working area 1311b and the rotation center of the active member 131 is 10°. At this time, no matter when the active member 131 rotates to any point in the second working area 1311b, the distance between the point where the second working area 1311b and the driven member 132 contact with the rotation center of the active member 131 is 15 mm (this size is only an example size and the operator can adjust it according to actual conditions), that is, the position of the driven member 132 relative to the base 11 does not change, the position of the second mounting portion 1212 does not change, and the position of the second lens relative to the base 11 does not change, thereby ensuring that in the second working area 1311b, the position of the second lens relative to the base 11 does not change, thereby improving the redundancy of the second lens switching process.

[0099] Similarly, when θ3 is 185°-195°, that is, the angle between the line between the first point of the third working area 1311c and the rotation center of the active member 131 and the line between the second point of the third working area 1311c and the rotation center of the active member 131 is 10°. At this time, no matter when the active member 131 rotates to any point in the third working area 1311c, the distance between the point where the third working area 1311c and the driven member 132 contact with the rotation center of the active member 131 is 25mm (this size is only an example size and the operator can adjust it according to actual conditions), that is, the position of the driven member 132 relative to the base 11 does not change, the position of the third mounting portion 1213 does not change, and the position of the third lens relative to the base 11 does not change, thereby ensuring that in the third working area 1311c, the position of the third lens relative to the base 11 does not change, thereby improving the redundancy of the third lens during switching.

[0100] It should be noted that the above description only takes the angle range of θ1, θ2 and θ3 as 10° as an example. Of course, the operator can also adjust the angle range of θ1, θ2 and θ3 according to actual usage needs, so as to adjust the redundancy of the switching process of the first lens, the second lens and the third lens according to actual usage needs.

[0101] It should be noted that the angle between the line between the first point on the arc wall corresponding to each working area and the rotation center of the active member 131 and the line between the second point and the rotation center of the active member 131 is 5°-15°, that is, the minimum angle between the line between the first point and the rotation center of the active member 131 and the line between the second point and the rotation center of the active member 131 is 5°, and the maximum angle between the line between the first point and the rotation center of the active member 131 and the line between the second point and the rotation center of the active member 131 is 15°.

[0102] In this way, it can be avoided that the angle between the line between the first point and the rotation center of the active member 131 and the line between the second point and the rotation center of the active member 131 is too small, resulting in the lens switching device 1 switching to another lens before the position of one of the lenses is maintained in the required state during the lens switching process, thereby avoiding the problem of low redundancy in lens switching affecting the accuracy of the lens switching process.

[0103] In addition, it is possible to avoid the angle between the line between the first point and the rotation center of the active member 131 and the line between the second point and the rotation center of the active member 131 being too large, resulting in difficulty in switching to another lens when switching to a certain lens, thereby avoiding the problem of difficulty in switching lenses.

[0104] In some embodiments, see Figure 1 and Figure 2 As shown, the base 11 includes a first base body 111 and a second base body 112; the extension direction of the first base body 111 intersects with the extension direction of the second base body 112. The mounting base 12, the transmission mechanism 13 and the second base body 112 are all arranged on the same side of the first base body 111. The mounting base 12 is movably connected to the second base body 112 along the first direction.

[0105] In this way, the position of the mounting seat 12 relative to the first seat 111 can be changed by setting the positions of the first seat 111 and the second seat 112 along different extension directions, so that the position of the mounting seat 12 relative to the first seat 111 can be changed according to the actual use requirements of the lens and the transmission path direction of the light, etc., which can facilitate the use of the operator. At the same time, the space utilization rate of the lens switching device 1 can be improved.

[0106] In some embodiments, see Figure 5 and Figure 6 As shown, one of the mounting seat 12 and the second seat body 112 is provided with a protrusion 1121 , and the other is provided with a groove 122 . The groove 122 extends along the first direction, and the protrusion 1121 is movably disposed in the groove 122 .

[0107] Thus, during the rotation of the active member 131, when the multiple working areas 1311 of the active member 131 rotate to different positions, the active member 131 drives the driven member 132 to move to different positions along the first direction relative to the base 11. Since one of the mounting seat 12 and the second seat body 112 is provided with a protrusion 1121, which can be a slider, and the other is provided with a groove 122, which can be a track, the groove 122 extends along the first direction, and the protrusion 1121 is movably arranged in the groove 122, so that the protrusion 1121 can move relative to the groove 122 along the first direction, thereby driving the mounting seat 12 to move relative to the second seat body 112 along the first direction, which can facilitate the mounting seat 12 to move relative to the base 11 along the first direction, and can facilitate the position switching of the lens.

[0108] It can be understood that since a protrusion 1121 is provided on one of the mounting seat 12 and the second seat body 112, and a groove 122 is provided on the other, and the groove 122 extends along the first direction, and the protrusion 1121 is movably arranged in the groove 122, on the one hand, the smooth movement of the mounting seat 12 relative to the base 11 can be ensured; on the other hand, the stability and reliability of the movement process of the mounting seat 12 relative to the base 11 can be ensured.

[0109] It should be noted that the protrusion 1121 in the present application is a protrusion 1121 with a track or a slide, and the track or the slide is used to adapt to the groove 122 to facilitate the matching and relative movement of the protrusion 1121 and the groove.

[0110] In some embodiments, see Figure 1 and Figure 2 As shown, the lens switching device 1 further includes an elastic member 15. The elastic member 15 is disposed on a side of the first base body 111 facing the second base body 112; one end of the elastic member 15 is connected to the first base body 111, and the other end of the elastic member 15 is connected to the mounting seat 12, and the elastic member 15 is used to provide an elastic force to the mounting seat 12 toward the first base body 111.

[0111] In this way, during the movement of the mounting seat 12 relative to the base 11, since the elastic member 15 is arranged on the side of the first seat body 111 facing the second seat body 112; one end of the elastic member 15 is connected to the first seat body 111, and the other end of the elastic member 15 is connected to the mounting seat 12, the elastic member 15 can provide the mounting seat 12 with an elastic force toward the first seat body 111, so that a certain pulling force can be maintained between the mounting seat 12 and the first seat body 111 through the elastic member 15 to ensure the stability of the mounting seat 12 relative to the first seat body 111.

[0112] In some embodiments, see Figure 1 and Figure 7As shown, the lens switching device 1 further includes a limiter 16 and a detection member 17. The limiter 16 is disposed on the mounting seat 12. The detection member 17 is disposed on the second seat body 112, and the detection member 17 is used to detect the position of the limiter 16 relative to the first seat body 111 along the first direction.

[0113] Thus, since the limiter 16 is disposed on the mounting seat 12 and the detection member 17 is disposed on the second seat body 112, the position of the limiter 16 relative to the first seat body 111 along the first direction can be detected by the detection member 17, so that it can be detected whether the mounting seat 12 is accurately switched to the corresponding position, which can further ensure the accuracy of the lens position switching.

[0114] Furthermore, the detection member 17 can be combined with an external controller or other electronic device to control the switching of the mounting seat 12 to different positions relative to the base 11, so that the detection member 17 can ensure that the mounting seat 12 switches to different positions under different parameter configurations.

[0115] In some embodiments, the detection member 17 includes a light emitting unit (not shown in the figure) and a light receiving unit (not shown in the figure), and there is a gap between the light emitting unit and the light receiving unit, and the light emitted by the light emitting unit is directed toward the light receiving unit. The lens switching device 1 includes a first state, in which the limiter 16 is arranged in the gap to block the light emitted by the light emitting unit, and the follower 132 contacts the circumferential side wall of the active member 131 of one of the working areas 1311.

[0116] In this way, since in the first state, the limit member 16 is arranged in the gap, at this time, the limit member 16 blocks the light emitted by the light emitting unit, and the follower 132 contacts the circumferential side wall of the active member 131 of one of the working areas 1311, so that the first state can be defined as the initial switching position of the lens switching device 1, and the position of the lens relative to the base 11 can be calibrated to further ensure the accuracy and reliability of the position of subsequent lens switching.

[0117] In some embodiments, see Figure 7 and Figure 8 As shown, the active member 131 is configured as a cam, and the cam is rotatable relative to the base 11. The driven member 132 includes a bracket 1321, a connecting shaft (not shown in the figure), a roller 1322 and a limiting portion 1323, one end of the bracket 1321 is connected to the connecting shaft, and the other end of the bracket 1321 is connected to the mounting seat 12; the limiting portion 1323 is connected to an end of the connecting shaft away from the bracket 1321; the roller 1322 is sleeved on the connecting shaft, and is arranged between the limiting portion 1323 and the bracket 1321, and the roller 1322 contacts the circumferential side wall of the cam.

[0118] In this way, when the driving mechanism 14 drives the cam to rotate relative to the base 11, the multiple working areas 1311 of the cam rotate to different positions relative to the base 11, and the cam drives the roller 1322 to move to different positions along the first direction, thereby driving the bracket 1321 to move to different positions along the first direction, and finally driving the mounting seat 12 to move to different positions in the first direction, thereby realizing the switching of the lens position.

[0119] In addition, since the limiting portion 1323 is connected to one end of the connecting shaft away from the bracket 1321, the roller 1322 is sleeved on the connecting shaft and is arranged between the limiting portion 1323 and the bracket 1321, the limiting portion 1323 can prevent the roller 1322 from detaching from the connecting shaft along the axial direction of the connecting shaft, thereby ensuring the overall stability of the follower 132.

[0120] In some embodiments, see Figure 1 and Figure 2 As shown, the driving mechanism 14 includes a driving member 141, an encoder (not shown in the figure) and a fixing seat 142. The active member 131 is connected to the power output end of the driving member 141; the encoder is connected to the driving member 141; the fixing seat 142 is arranged on the side of the base 11 facing the driving member 141, and the fixing seat 142 is connected to the driving member 141 and the base 11.

[0121] In this way, the driving member 141 serves as the power structure of the driving mechanism 14, and is used to provide power for the movement of the active member 131. The fixing seat 142 serves as the supporting structure of the driving mechanism 14, and is used to support and fix the driving member 141 and other structures. Since the encoder is connected to the driving member 141, in the process of the driving member 141 driving the active member 131 to move, on the one hand, the encoder can correspond to different positions in the lens switching process, thereby ensuring the accuracy of the position switching. On the other hand, the encoder can be used in combination with structures such as the detection member 17 and the limit member 16. Specifically, after the detection member 17 and the limit member 16 calibrate the initial position of the lens, the encoder can be used to record the position information of the lens switching process at all times, thereby further ensuring the accuracy of the lens position switching.

[0122] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0123] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A lens switching device, characterized in that: include: Pedestal; A mounting seat, movably connected to the base along a first direction; the mounting seat comprises a plurality of mounting portions spaced apart along the first direction, the mounting portions being used to mount the lens; The transmission mechanism comprises a driving member and a driven member which are arranged opposite to each other along the first direction; one end of the driven member contacts the circumferential side wall of the driving member, and the other end of the driven member is connected to the mounting seat; The circumferential side wall of the active member includes a plurality of working areas, the plurality of working areas are arranged at intervals along the circumference of the active member, and the distances between any two of the working areas and the rotation center of the active member are different; The driving mechanism is used to drive the active member to rotate relative to the base, and the driven member to move along the first direction.

2. The lens switching device according to claim 1, characterized in that: The circumferential side wall of the active member located in the working area is an arc wall, and the distance between any point on the arc wall and the rotation center of the active member is the same.

3. The lens switching device according to claim 2, characterized in that: The arc wall comprises a first point and a second point, wherein the first point and the second point are located at two ends of the arc wall along the circumference of the active member; The angle between the line between the first point and the rotation center of the active member and the line between the second point and the rotation center of the active member is 5°-15°.

4. The lens switching device according to any one of claims 1 to 3, characterized in that: The base includes a first base body and a second base body; the extension direction of the first base body and the extension direction of the second base body intersect; The mounting seat, the transmission mechanism and the second seat body are all arranged on the same side of the first seat body; The mounting seat is movably connected to the second seat body along the first direction.

5. The lens switching device according to claim 4, characterized in that: A protrusion is provided on one of the mounting seat and the second seat body, and a groove is provided on the other of the mounting seat and the second seat body. The groove extends along the first direction, and the protrusion is movably disposed in the groove.

6. The lens switching device according to claim 4, characterized in that: The lens switching device also includes: An elastic member is arranged on a side of the first seat body facing the second seat body; one end of the elastic member is connected to the first seat body, and the other end of the elastic member is connected to the mounting seat, and the elastic member is used to provide an elastic force to the mounting seat toward the first seat body.

7. The lens switching device according to claim 4, characterized in that: The lens switching device also includes: A limiting member, arranged on the mounting seat; A detection member is disposed on the second base, and is used to detect a position of the limiting member relative to the first base along the first direction.

8. The lens switching device according to claim 7, characterized in that: The detection element comprises a light emitting unit and a light receiving unit, wherein a gap is provided between the light emitting unit and the light receiving unit, and the light emitted by the light emitting unit is directed toward the light receiving unit; The lens switching device includes a first state, in which the limiting member is arranged in the gap to block the light emitted by the light emitting unit, and the follower member contacts the circumferential side wall of the active member in one of the working areas.

9. The lens switching device according to any one of claims 1 to 3, characterized in that: The active member is configured as a cam, and the cam is rotatable relative to the base; The follower includes a bracket, a connecting shaft, a roller and a limiting portion, one end of the bracket is connected to the connecting shaft, and the other end of the bracket is connected to the mounting seat; the limiting portion is connected to an end of the connecting shaft away from the bracket; the roller is sleeved on the connecting shaft and arranged between the limiting portion and the bracket, and the roller is in contact with the circumferential side wall of the cam.

10. The lens switching device according to any one of claims 1 to 3, characterized in that: The driving mechanism comprises a driving member, an encoder and a fixing seat; The active member is connected to the power output end of the driving member; the encoder is connected to the driving member; the fixing seat is arranged on the side of the base facing the driving member, and the fixing seat is connected to the driving member and the base.

Images