Aperture apparatus, image capturing apparatus, action camera and movable object

Abstract

An aperture apparatus (100), an image capturing apparatus, an action camera, and a movable object, the aperture apparatus (100) comprising a first component (10), a second component (20) and multiple rolling members (30). The first component (10) and the second component (20) are annular structures, and axes of said components are both coaxially arranged with an optical axis (L) of the aperture apparatus (100). The first component (10) and the second component (20) can rotate relative to each other, and the second component (20) is provided with multiple abutting portions (21) distributed along a circumferential direction. The multiple rolling members (30) are sandwiched between the first component (10) and the abutting portions (21). The multiple abutting portions (21) correspondingly abut against the multiple rolling members (30) in a one-to-one manner, and at least one of the multiple abutting portions (21) comprises an abutting surface (211) inclined with respect to a direction of the optical axis (L). When the first component (10) and the second component (20) rotate relative to each other, the rolling members (30) can continuously abut against the abutting surface (211).

Description

Aperture device, photographing device, action camera and movable object TECHNICAL FIELD

[0001] The present application relates to the field of photographing technology, in particular to an aperture device, a photographing device, an action camera and a movable object. BACKGROUND

[0002] The aperture device is an important component in the lens assembly of the photographing device, which is used to adjust the light amount of the lens assembly. In order to facilitate assembly, an assembly gap is provided between the fixed ring and the rotating ring of the driving assembly of the leaf assembly. If the photographing device is subjected to vibration / impact during use, the existence of the assembly gap will affect the light amount adjustment of the aperture device and affect the imaging quality.

[0003] SUMMARY

[0004] Therefore, the present application provides an aperture device, a photographing device, an action camera and a movable object.

[0005] The aperture device provided by the first aspect of the present application comprises:

[0006] The first component is annular in structure;

[0007] The second component is annular in structure, the axial centers of the first component and the second component are coaxially arranged with the optical axis of the aperture device, and the first component and the second component are relatively rotatable, the second component is provided with a plurality of abutting portions distributed in the circumferential direction; and

[0008] A plurality of rolling members are spaced apart and distributed along the circumferential direction of the second component, and the plurality of rolling members are clamped between the first component and the abutting portions;

[0009] The plurality of abutting portions correspond one-to-one to the plurality of rolling members, at least one of the plurality of abutting portions comprises an abutting surface which is arranged obliquely relative to the optical axis direction, and the rolling member can always abut against the abutting surface when the first component and the second component are relatively rotated.

[0010] The aperture device provided by the second aspect of the present application comprises:

[0011] The rotating component is annular in structure;

[0012] The fixed component is annular in structure and is arranged around the circumferential outer side of the rotating component, the rotating component and the fixed component are relatively rotatable, the rotating component is provided with at least three abutting portions distributed in the circumferential direction; and

[0013] At least three rolling elements are arranged at intervals along the circumferential direction of the rotating component and are clamped between the at least three abutting portions of the rotating component and the fixed component, and the at least three rolling elements have the same specifications;

[0014] The at least three abutting portions correspond one-to-one to the at least three rolling elements and abut against the rolling elements, and the at least three abutting portions include abutting surfaces arranged in a non-rotationally symmetrical manner relative to the rotation axis parallel to the optical axis direction, and the rolling elements can always abut against the abutting surfaces when the rotating component and the fixed component rotate relative to each other.

[0015] By arranging at least one of the plurality of abutting portions to include an abutting surface arranged obliquely relative to the optical axis direction or at least three abutting portions to include abutting surfaces arranged in a non-rotationally symmetrical manner relative to the rotation axis parallel to the optical axis direction, and cooperating with the rolling elements, the rolling elements can always abut against the abutting surfaces when the first component and the second component rotate relative to each other, or the first component and the second component can be tightly attracted to each other in the radial direction, or the relative distance between the first component and the second component in the radial direction remains unchanged. In this way, the component that rotates relative to the other component in the first component and the second component does not move radially when rotating. Since the component that rotates relative to the other component in the first component and the second component does not move radially when rotating, the positions of the first component and the second component remain constant during relative rotation, avoiding deviations in the results when detecting the relative displacement between the two components when adjusting the light quantity, thereby making the control of the relative rotation amount between the first component and the second component more accurate. At the same time, the component for rotation does not move radially due to assembly gaps, so that the diameter of the light passing hole composed of the blade assembly connected to the component for rotation does not change due to vibration, avoiding fluctuations in the amount of light passing through the aperture device when subjected to vibration, and affecting the imaging quality of the imaging device.

[0016] The aperture device provided in the third aspect of the present application comprises:

[0017] A fixed ring;

[0018] A rotating ring, the rotating ring is at least partially arranged in the surrounding space of the fixed ring, and the rotating ring is rotatable relative to the fixed ring; and

[0019] At least three rolling elements are arranged at intervals along the circumferential direction of the rotating component and are clamped between the at least three abutting portions of the rotating component and the fixed component, and the at least three rolling elements have the same specifications;

[0020] The rotating ring is provided with at least three abutting portions, the at least three abutting portions abut with the at least three rolling members one by one, at least one of the abutting portions comprises a first abutting surface abutting with the rolling member, at least one of the abutting portions comprises a second abutting surface abutting with the rolling member, the first abutting surface is arranged obliquely relative to the optical axis direction, and the second abutting surface is arranged parallelly relative to the optical axis direction.

[0021] The first abutting surface cooperates with the corresponding rolling member to generate a component force perpendicular to the optical axis direction through a vertical driving force applied to the rotating ring along the optical axis direction.

[0022] By arranging the first abutting surface obliquely relative to the optical axis direction and the second abutting surface parallelly relative to the optical axis direction, the first abutting surface cooperates with the corresponding rolling member to generate a component force perpendicular to the optical axis direction through a vertical driving force applied to the rotating ring along the optical axis direction, so that the second abutting surface and the fixed ring clamp the rolling member, so that the rotating ring does not move radially when rotating, and at the same time, the component force pushes the rolling member abutting with the second abutting surface of the rotating ring, so that the second abutting surface and the fixed ring are tightly attracted to each other, and the relative distance between the second abutting surface and the fixed ring in the radial direction remains unchanged, thereby avoiding inaccurate position detection between the rotating ring and the fixed ring, which leads to inaccurate light adjustment of the aperture device, so as to avoid affecting the imaging quality.

[0023] The photographing device provided in the fourth aspect of the present application comprises:

[0024] The lens assembly and the aperture device described above, the aperture assembly is located inside the lens assembly or on one side of the lens assembly.

[0025] The motion camera provided in the fifth aspect of the present application comprises:

[0026] The lens assembly adopts the aperture device described above.

[0027] When the motion camera vibrates, the relative distance between the first component and the second component of the aperture device in the radial direction remains unchanged.

[0028] The movable object provided in the sixth aspect of the present application comprises:

[0029] The power unit is used to provide power for the movement of the movable object, and the lens assembly adopts the aperture device described above.

[0030] When the movable object vibrates, the relative distance between the first component and the second component of the aperture device in the radial direction remains unchanged. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those drawings without any creative effort.

[0032] Fig. 1 is an exploded schematic view of an aperture device according to an embodiment of the present application;

[0033] Fig. 2 is a schematic view of the cooperation between a second component and a rolling element according to an embodiment of the present application;

[0034] Fig. 3 is a sectional view of the aperture device according to an embodiment of the present application;

[0035] Fig. 4 is a schematic view of the cooperation between a second component and a rolling element according to an embodiment of the present application and a corresponding sectional view;

[0036] Fig. 5 is a force analysis diagram of the cooperation between a second component and a rolling element according to an embodiment of the present application;

[0037] Fig. 6 is a schematic view of the cooperation between a second component and a rolling element according to another embodiment of the present application and a corresponding sectional view;

[0038] Fig. 7 is a force analysis diagram of the cooperation between a second component and a rolling element according to another embodiment of the present application;

[0039] Fig. 8 is a schematic view of the cooperation between a second component and a rolling element according to yet another embodiment of the present application and a corresponding sectional view;

[0040] Fig. 9 is a force analysis diagram of the cooperation between a second component and a rolling element according to yet another embodiment of the present application;

[0041] Fig. 10 is a partial structural schematic view of the structure shown in Fig. 1;

[0042] Fig. 11 is a sectional view of the cooperation between a second component and a rolling element according to an embodiment of the present application;

[0043] Fig. 12 is a sectional view of the cooperation between a second component and a rolling element according to another embodiment of the present application;

[0044] Fig. 13 is a sectional view of the cooperation between a second component and a rolling element according to yet another embodiment of the present application;

[0045] Fig. 14 is a sectional view of a lens assembly according to an embodiment of the present application. DETAILED DESCRIPTION

[0046] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0047] The aperture device is an important component in the lens assembly of the photographing device, and is used for adjusting the light quantity of the lens assembly. In order to facilitate assembly, a gap is provided between the fixing ring and the rotating ring of the driving assembly of the leaf assembly. If vibration / impact occurs during use of the photographing device, the gap will cause the rotating ring to move radially, so that the position between the fixing ring and the rotating ring moves, resulting in a decrease in position detection accuracy, affecting the light quantity adjustment of the aperture device, and affecting the imaging quality.

[0048] Based on this, the embodiments of the present application propose an aperture device, a photographing device, a motion camera and a movable object using the aperture device.

[0049] That is, the purpose of the embodiments of the present application is to design a high-precision light quantity control, which must control the high-precision position of the rotating ring. The high-precision position control of the rotating ring needs to meet the following three conditions: condition A: low friction, that is, the holding method of the rotating ring must have a very low dynamic friction coefficient; condition B: high position detection accuracy, that is, the distance between the position detection sensor and the rotating ring must always remain constant; and condition C: no load fluctuation in the driving range, and no components that cause load fluctuation due to driving are used.

[0050] As shown in FIGS. 1-2, the embodiments of the present application propose an aperture device 100 for adjusting the light quantity of the lens assembly of the photographing device. The proposed aperture device 100 includes a first component 10, a second component 20 and a plurality of rolling members 30. The first component 10 is annular in structure, the second component 20 is annular in structure, the axial center of the first component 10 and the second component 20 are coaxially arranged with the optical axis L of the aperture device 100, and the first component 10 and the second component 20 are relatively rotatable. The second component 20 is provided with a plurality of abutting portions 21 distributed in the circumferential direction. The plurality of rolling members 30 are distributed in the circumferential direction of the second component 20 at intervals, and the plurality of rolling members 30 are clamped between the first component 10 and the abutting portions 21. Among them, the plurality of abutting portions 21 correspond one-to-one with the plurality of rolling members 30, and at least one of the plurality of abutting portions 21 includes an abutting surface 211 arranged obliquely compared to the direction of the optical axis L, for example, the abutting surface 211a in FIG. 2. When the first component 10 and the second component 20 rotate relative to each other, the rolling member 30 can always abut against the abutting surface 211.

[0051] The aperture device 100 provided by the embodiments of the present application comprises at least one of the plurality of abutting portions 21, which comprises an abutting surface 211a arranged obliquely relative to the direction of the optical axis L. When the first component 10 and the second component 20 are relatively rotated, the rolling member 30 can always abut against the abutting surface 211a. Thus, since the rotating component among the first component 10 and the second component 20 does not move radially relative to the other component during rotation, the positions of the first component 10 and the second component 20 remain constant during relative rotation. Further, if a position sensor is arranged on the first component 10 and / or the second component 20 to detect the amount of relative rotation between the first component 10 and the second component 20, the detection result is also more accurate, so that the control of the amount of relative rotation between the first component 10 and the second component 20 is also more accurate. At the same time, since the rotating component among the first component 10 and the second component 20 does not move radially relative to the other component during rotation, if the rotating component is used to drive the plurality of blade assemblies of the aperture device 100 to open or retract to adjust the diameter of the light passing hole formed by the plurality of blade assemblies, the blade assemblies will not move a small range due to the radial movement of the rotating component, and the diameter of the light passing hole can be avoided from changing. Therefore, the embodiments can accurately control the diameter of the light passing hole of the blade assemblies, that is, accurately control the amount of light entering the aperture device 100, and avoid affecting the imaging quality due to inaccurate amount of light entering.

[0052] In some embodiments, the second component 20 is arranged inside the first component 10. The "second component 20 arranged inside the first component 10" can mean that the second component 20 is arranged entirely inside the first component 10, or that the second component 20 is arranged partially inside the first component 10 and partially protrudes from the first component 10 in the direction of the optical axis L. Of course, the first component 10 and the second component 20 are not limited to the second component 20 arranged inside the first component 10, but the first component 10 can also be arranged inside the second component 20, as long as the abutting portion and the rolling member are arranged between the two components, which can be determined according to actual design needs.

[0053] In some embodiments, the first component 10 is a fixed component, and the second component 20 is a rotating component. The "fixed component" means that when the aperture device 100 is installed in the shell of a shooting device, the first component 10 is relatively fixed with the shell of the shooting device, and the second component 20 can rotate relative to the first component 10. In other embodiments, when the first component 10 is arranged inside the second component 20, the second component 20 is a fixed component, and the first component 10 is a rotating component.

[0054] As shown in FIG. 3, in some embodiments, the inner side wall of the first component 10 is provided with a plurality of limiting structures 11, which are arranged along the circumference of the first component 10, each of the limiting structures 11 comprises a first limiting portion 111 and a second limiting portion 112, which are arranged along the circumference of the first component 10 with a spacing, and each of the limiting structures 11 is provided with one rolling element 30 between the first limiting portion 111 and the second limiting portion 112, the first limiting portion 111 and the second limiting portion 112 limit the movement of the rolling element 30 in the circumferential direction of the first component 10.

[0055] Continuing to refer to FIG. 3, in some embodiments, the inner side wall of the first component 10 is provided with a plurality of clamping portions 12, which are arranged along the circumference of the first component 10, the plurality of clamping portions 12 correspond to the plurality of abutting portions 21 one by one, and each of the clamping portions 12 and the abutting portion 21 corresponding thereto is provided with one rolling element 30, the clamping portion 12 is used to clamp the rolling element 30 in the radial direction in cooperation with the abutting portion 21.

[0056] Continuing to refer to FIG. 3, in some embodiments, the clamping portion 12 comprises a clamping surface 121, which is a curved surface arranged parallel to the optical axis L.

[0057] As shown in FIG. 5, in some embodiments, the inner side wall of the first component 10 is provided with a plurality of limiting structures 11 and a plurality of clamping portions 12, which are arranged along the circumference of the first component 10, each of the limiting structures 11 comprises a first limiting portion 111 and a second limiting portion 112, which are arranged along the circumference of the first component 10 with a spacing, and the clamping portion 12 is located between the first limiting portion 111 and the second limiting portion 112, and the clamping portion 12 is used to clamp the rolling element 30 in the radial direction in cooperation with the abutting portion 21.

[0058] In some embodiments, the fixed component, i.e., the first component 10, is used to cooperate with the second component 20 to generate a vertical driving force VF for driving the second component 20 to move. In some embodiments, the fixed component is used to cooperate with the second component 20 to generate a rotating driving force (not shown in the figure) for driving the second component 20 to rotate. For example, in an embodiment, the fixed component is a motor stator, and the second component 20 is a motor rotor.

[0059] In some embodiments, the rotating component, i.e. the second component 20, is configured to drive the plurality of blade assemblies of the aperture device 100 to move to control the light passing amount of the aperture device 100. In some embodiments, the rotating component is configured to drive the plurality of blade assemblies of the aperture device 100 to rotate to adjust the size of the light passing hole formed by the plurality of blade assemblies to control the light passing amount of the aperture device 100. As described above, in the embodiments of the present application, the rotating component in the first component 10 and the second component 20 does not move radially relative to the other when rotating, i.e. the rotating component does not move radially relative to the fixed component when rotating, so that in the process of driving the plurality of blade assemblies of the aperture device 100 to move to control the light passing amount of the aperture device 100, the rotating component does not cause the blade assemblies to move slightly due to the radial movement of the rotating component, which causes the diameter of the light passing hole to change, resulting in fluctuations in the light passing amount of the aperture device 100, which affects the imaging quality of the imaging device.

[0060] As shown in FIG. 1, in some embodiments, the aperture device 100 further comprises a blade support 40, a driving assembly 50, and a plurality of blade assemblies 60, the plurality of blade assemblies 60 are arranged around the optical axis L, and one side of each blade assembly 60 is connected to the blade support 40, the plurality of blade assemblies 60 comprise a guide portion 61, the driving assembly 50 comprises a driving portion 51 corresponding to the guide portion 61 of the plurality of blade assemblies 60, the driving portion 51 is connected to the second component 20, the driving assembly 50 is configured to drive the second component 20 to rotate around the optical axis L relative to the first component 10 to drive the driving portion 51 to rotate around the optical axis L, and the driving portion 51 is configured to drive the plurality of blade assemblies 60 to rotate in the first direction or the second direction through the guide portion 61 to make the other side of the plurality of blade assemblies 60 collectively form a light passing hole H with an adjustable size.

[0061] As shown in FIG. 1, in some embodiments, the guide portion 61 is a guide groove A, and the driving portion 51 is a driving shaft B, i.e. the blade assembly 60 is provided with the guide groove A, the driving assembly 50 is provided with the driving shaft B, and the driving shaft B is arranged in the guide groove A. It should be noted that the positions of the guide groove A and the driving shaft B can be interchanged, i.e. the driving assembly 50 is provided with the guide groove A, and the blade assembly 60 is provided with the driving shaft B, which is also possible, and the specific design can be determined according to actual needs.

[0062] In some embodiments, the rolling component 30 is configured to provide rolling friction. The rolling friction has small friction, so that the resistance when the second component 20 rotates relative to the first component 10 is small, which can reduce energy loss, and the rolling friction has the advantage of stable friction, so that the rotation of the second component 20 relative to the first component 10 can be stable, and the rolling friction or low dynamic friction or low load fluctuation is achieved.

[0063] In some embodiments, the rolling member 30 comprises a rolling body having a rotational symmetric shape. In some embodiments, the rolling body having a rotational symmetric shape comprises, but is not limited to, a ball, a cylinder, a cone.

[0064] In some embodiments, preferably, the rolling body comprises a ball. The ball has the advantages of high precision and small friction torque, so that the rotation of the second part 20 relative to the first part 10 can be carried out under the conditions of high precision and small energy loss.

[0065] In some embodiments, the plurality of rolling members 30 have the same specification. In this implementation, by setting the plurality of rolling members 30 to have the same specification, interference between the plurality of rolling members 30 due to different specifications can be avoided, so that the rotation of the second part 20 relative to the first part 10 is not interfered.

[0066] In some embodiments, the specification comprises shape and friction coefficient. In other embodiments, the specification comprises at least one of shape, size, and friction coefficient.

[0067] In some embodiments, the outer surface of the plurality of rolling members 30 is provided with a lubricating medium. In this implementation, by setting the lubricating medium, the friction of the rolling member 30 during rotation can be further reduced.

[0068] In some embodiments, the plurality of rolling members 30 comprises at least three rolling members 30. For the convenience of subsequent description, as shown in FIG. 2, the rolling members 30 are respectively labeled as 30a, 30b, and 30c. In this implementation, the at least three rolling members 30 are distributed to form a surface support, which is conducive to forming a smooth support between the first part 10 and the second part 20, so that the first part 10 and the second part 20 can rotate relatively smoothly.

[0069] As shown in FIG. 2, in some embodiments, the plurality of abutting portions 21 comprises at least three abutting portions 21. In this implementation, the at least three abutting portions 21 are distributed to form a surface support, which is conducive to forming a smooth support between the first part 10 and the second part 20, so that the first part 10 and the second part 20 can rotate relatively smoothly.

[0070] In some embodiments, at least one of the at least three abutting portions 21 has an abutting surface 211 that is arranged obliquely to the optical axis L, and when a vertical driving force VF is applied to the second member 20, the rolling element 30 in contact with the abutting surface 211 is subjected to a force M in the radial direction that is not zero. Here, the "radial direction" refers to a direction perpendicular to the optical axis L. The "force M in the radial direction that is not zero" is due to the fact that the abutting surface 211 is arranged obliquely to the optical axis L, and when the vertical driving force VF is applied to the abutting surface 211, the force (not shown, but see Fig. 5A) that the abutting surface 211 exerts on the rolling element 30 is perpendicular to the abutting surface 211 that is arranged obliquely to the optical axis L, and the force (not shown, but see Fig. 5A) that the abutting surface 211 exerts on the rolling element 30 forms a component force (not shown) in the optical axis L direction and a component force M in the radial direction, so when VF is not zero, the rolling element 30 is subjected to a force M in the radial direction that is not zero. Note that because the rolling element 30 in contact with the abutting surface 211 that is arranged obliquely to the optical axis L is subjected to a force M in the radial direction that is not zero, the reaction force G of the rolling element 30 on the abutting surface 211 that is arranged obliquely to the optical axis L also has a component force F (or Fl) in the radial direction that is not zero, and this component force F (or Fl) in the radial direction of the reaction force G of the rolling element 30 on the abutting surface 211 that is arranged obliquely to the optical axis L has a pushing effect in the radial direction on the second member 20, so that the remaining abutting portions of the second member 20 apply a component force (e.g., F11 or F12 in Fig. 5C) of the component force F (or Fl) to one side of the corresponding rolling element, while the other side of the corresponding rolling element 30 of the remaining abutting portions 21 is in contact with the first member, so that the one side of the corresponding rolling element of the remaining abutting portions applies a reaction force (e.g., F11' or F12' in Fig. 5B) to the component force (e.g., F11 or F12 in Fig. 5C) of the component force F (or Fl), so that the second member 20 does not move in the radial direction when it rotates relative to the first member 10. That is, in this embodiment, the rolling element 30 corresponding to the abutting surface 211 that is arranged obliquely to the optical axis L is subjected to a force M in the radial direction that is not zero, so the component force F (or Fl) in the radial direction of the reaction force G of the rolling element 30 on the abutting surface 211 that is arranged obliquely to the optical axis L is not zero, but the total force (Fl + F11' + F12') of the component forces F or Fl in the radial direction of all the rolling elements of the rotating member and the reaction forces (F11', F12') is zero, so that the rotating member remains in a state of dynamic equilibrium.

[0071] The above principles will be described in more detail in the following embodiments.

[0072] Referring to FIGS. 4-5, in some embodiments, the second component 20 has three abutting portions, only one of which 21 has an abutting surface 211 arranged obliquely relative to the direction of the optical axis L, wherein FIG. 4(a) shows a schematic view of the three-dimensional fit between the second component and the rolling element; FIG. 4(b) shows a cross-sectional view along section A in FIG. 4(a); FIG. 4(c) shows a cross-sectional view along section B or section C in FIG. 4(a). FIG. 5(a) shows a force analysis diagram along section A in FIG. 4(a); FIG. 5(b) shows a force analysis diagram of the cross-sectional view along section B or section C in FIG. 4(a); and FIG. 5(c) shows a force analysis diagram perpendicular to the direction of the optical axis L in FIG. 4(a).

[0073] Specifically, the at least three abutting portions 21 include a first abutting portion 21a, a second abutting portion 21b, and a third abutting portion 21c, at least one of which 21 has an abutting surface 211 arranged obliquely relative to the direction of the optical axis L, as shown in FIGS. 4(a)-(c). The first abutting surface 211a is an abutting surface 211a arranged obliquely relative to the direction of the optical axis L, and the second abutting surface 211b and the third abutting surface 211c are non-inclined surfaces parallel to the direction of the optical axis L, i.e., the second abutting surface 211b or the third abutting surface 211c is arranged parallel relative to the direction of the optical axis L. For ease of analysis, in this embodiment, the second abutting surface 211b or the third abutting surface 211c is arranged rotationally symmetrically along the direction of the optical axis L, so that their cross sections are the same. Specifically, the first abutting surface 211a is an inclined surface arranged obliquely relative to the direction of the optical axis L. As shown in FIG. 4(b), the absolute value of the angle between the first abutting surface 211a and the radial direction of the aperture device is a, and the absolute value of the angle between the first abutting surface 211a and the direction of the optical axis L is 90°-a.

[0074] Referring to Fig. 4 and the force analysis diagram of the present embodiment shown in Figs. 5(a)-(c), the first abutting surface 211a is configured to cooperate with the rolling element 30a to generate a radial force Fl based on the vertical driving force VF along the optical axis L, and the first and second sub-forces Fl 1 and Fl 2 of the radial force Fl are configured to abut the second and third abutting surfaces 211b and 211c against the corresponding rolling elements 30b and 30c. Specifically, after the vertical driving force VF is applied to the first abutting surface 211a, the rolling element 30a is pressed on one side, and the rolling element 30a is in contact with the side and bottom surfaces of the first component 10, so that the rolling element 30 generates a reaction force G relative to the first abutting surface 211a. After the reaction force G is decomposed into a force along the optical axis L and a force along the radial direction, the radial force Fl applied to the rotating assembly can be obtained. Referring to the force analysis diagram of another perspective view shown in Fig. 5(c), the radial force Fl can be decomposed into the first sub-force Fl 1 applied to the second rolling element 30b and the third rolling element 30c, and the second sub-force Fl 2 applied to the second rolling element. In this embodiment, since the first and second sub-forces Fl 1 and Fl 2 can abut the second and third abutting surfaces 211b and 211c against the corresponding rolling elements 30b and 30c, the rolling element 30b is clamped between the second abutting surface 211b and the first component 10, and the rolling element 30c is clamped between the third abutting surface 211c and the first component 10, so that the second component 20 does not move radially when rotating relative to the first component 10. In this embodiment, the radial force Fl generated by the rolling element 30a and the first abutting surface 30b based on the vertical driving force VF applied to the second component is not zero, but since the rolling element 30b generates a reaction force Fl 1' of the first sub-force Fl 1 relative to the second abutting surface 211b, and the rolling element 30c generates a reaction force F12' of the second sub-force Fl 2 relative to the second abutting surface 211c, the total force (Fl + Fl 1' + Fl 2') of all rolling elements 30a, 30b and 30c on the second component is zero.

[0075] Further, in this embodiment, referring to Fig. 4(c) and Fig. 5(b), the second component 20 is further provided with a transmission portion 22, which is arranged adjacent to and connected with the abutting portion 21. Specifically, in this embodiment, the transmission portion 22 is arranged on the side of the second and / or third abutting portion close to the first component, and the transmission portion 22 comprises a transmission surface, which is parallel to the radial direction of the aperture device in this embodiment, and is configured to transmit the vertical driving force VF applied to the second component 20 along the direction parallel to the optical axis L to the rolling element 30 corresponding to the abutting surface arranged parallel to the optical axis L, i.e., to the rolling element 30b and the rolling element 30c.

[0076] In the present embodiment, the transmission portion 22 includes a transmission portion 22b cooperating with the rolling member 30b and a transmission portion 22c cooperating with the rolling member 30c, so that the first component 10 and the second component 20 are attracted to each other in the direction of the optical axis L, or the relative distance between the first component 10 and the second component 20 in the direction of the optical axis L remains unchanged; at the same time, the first abutting surface 211a described above cooperates with the rolling member 30a, so that the first component 10 and the second component 20 are attracted to each other in the radial direction, or the relative distance between the first component 10 and the second component 20 in the radial direction remains unchanged. Through the above embodiment, during the relative rotation of the first component 10 and the second component 20, the relative positions of the first component 10 and the second component 20 in the radial direction and the direction of the optical axis L do not change.

[0077] In some embodiments, the first component 10 further includes a blocking portion 13 (13b and / or 13c) opposite to the transmission portion 22 (22b and / or 22c), and the transmission portion 22 and the blocking portion 13 clamp the rolling member 30 (30b and / or 30c) corresponding to the abutting surface 30 (30b and / or 30c) arranged parallel to the direction of the optical axis L in the direction of the optical axis L.

[0078] In some embodiments, continuing to refer to FIG. 4(c) and FIG. 5(b), the transmission portion 22 (22b and / or 22c) includes a transmission surface 221 (221b and / or 221c) abutting the rolling member 30 (30b and / or 30c) corresponding to the abutting surface arranged parallel to the direction of the optical axis L, and the blocking portion 13 includes a blocking surface 131 (131b and / or 131c) abutting the rolling member 30 (30b and / or 30c) corresponding to the abutting surface arranged parallel to the direction of the optical axis L, the transmission surface 221 (221b and / or 221c) is arranged obliquely relative to the optical axis L, the blocking surface 131 (131b and / or 131c) is arranged obliquely relative to the optical axis L, the directions of the oblique arrangements of the transmission surface 221 (221b and / or 221c) and the blocking surface 131 (131b and / or 131c) are consistent, and the angles of the oblique arrangements of the transmission surface 221 (221b and / or 221c) and the blocking surface 131 (131b and / or 131c) are the same or different. Through the above embodiment, during the rotation of the second component 20 relative to the first component 10, the transmission surface 221 (221b and / or 221c) and the blocking surface 131 (131b and / or 131c) are in rolling friction with the rolling member 30 (30b and / or 30c), the frictional force is stable, and load fluctuation does not occur.

[0079] Of course, in other embodiments, the transmission surface 221 and the blocking surface 131 can also be arranged perpendicularly to the optical axis L, which can be determined according to actual design needs.

[0080] Referring to FIGS. 6-7, in some embodiments, at least two of the first abutting portion 21a, the second abutting portion 21b and the third abutting portion 21c' each has an abutting surface 211 which is arranged obliquely to the direction of the optical axis L. In FIG. 6(a), a perspective view of the cooperation between the second component and the rolling element is shown; in FIG. 6(b), a sectional view along the section A or the section C in FIG. 6(a) is shown; in FIG. 6(c), a sectional view along the section B in FIG. 6(a) is shown. In FIG. 7(a), a force analysis diagram along the section A or the section C in FIG. 6(a) is shown; in FIG. 7(b), a force analysis diagram along the section B in FIG. 6(a) is shown; in FIG. 7(c), a force analysis diagram perpendicular to the direction of the optical axis L in FIG. 6(a) is shown.

[0081] Specifically, the first abutting surface 211a included in the first abutting portion 21a and the third abutting surface 211c' included in the third abutting portion 21c' are each an abutting surface 211a, 211c' arranged obliquely to the direction of the optical axis L, and the second abutting surface 211b included in the second abutting portion 21b is a non-inclined surface. Preferably, the second abutting surface 211b is a curved surface. For the sake of analysis, in the present embodiment, the first abutting surface 2111 or the third abutting surface 211c' is arranged rotationally symmetrically along the direction of the optical axis, and thus the sections thereof are identical. Specifically, as shown in FIG. 6(b), the absolute value of the angle between the first abutting surface 211a or the third abutting surface 211c' and the radial direction of the diaphragm device is a, and the absolute value of the angle between the first abutting surface 211a or the third abutting surface 211c' and the direction of the optical axis L is 90°-a.

[0082] In combination with the force analysis diagram shown in FIG. 7, the first abutting surface 211a and the third abutting surface 21c' are inclined surfaces arranged obliquely along the optical axis L, and the two surfaces cooperate with the corresponding rolling elements 30a and 30c to generate the first component force F1 and the second component force F2 along the radial direction based on the vertical driving force VF applied to the second component 20 along the optical axis L, and the resultant force F3 (i.e., F1+F2) of the first component force F1 and the second component force F2 is used to abut the third abutting surface 211b against the corresponding rolling element 30b. Similarly, since the resultant force F3 of the first component force F1 and the second component force F2 abuts the second abutting surface 211b against the corresponding rolling element 30b, the rolling element 30b corresponding to the second abutting surface 211b is clamped between the second abutting surface 211b and the first component 10, so that the second component 20 does not move radially when rotating relative to the first component 10. In this embodiment, the resultant force F3 along the radial direction is not 0, and is applied to one side of the rolling element 30c. Since the other side of the rolling element 30c is in contact with the first component, the one side of the rolling element 30c generates a counterforce F3' against F3 and is applied to the second abutting surface 211b of the second component 20, so that the rolling element 30c is clamped between the third abutting surface 211c and the first component 10. In this process, the resultant force F3 along the radial direction generated based on the vertical driving force VF is not 0, and the total resultant force (F1+F2+F3') generated by the rolling elements 30a, 30b and 30c on the second component is 0.

[0083] In some embodiments, the inclination of the plurality of abutting surfaces 211 arranged obliquely relative to the direction of the optical axis L is consistent or rotationally symmetric relative to the optical axis L. That is, the inclination of the first abutting surface 211a and the third abutting surface 21c' is consistent or rotationally symmetric relative to the optical axis L. Wherein, the "rotationally symmetric" refers to that the abutting surface 211 coincides with another adjacent abutting surface 211 after rotating around the optical axis L by a predetermined angle. For example, the three abutting surfaces of the first abutting surface 211a, the second abutting surface 211b and the third abutting surface 211c' are not rotationally symmetric as a whole, and the inclination of the first abutting surface 211a and the third abutting surface 211c' is consistent or rotationally symmetric relative to the optical axis L.

[0084] In some embodiments, the second component 20 is further provided with a transmission portion 22b, which has the same function as the transmission portion described above, and will not be described here. It should be noted that for embodiments with three abutting portions, the number of transmission portions is at most two, so as to avoid axial displacement between the first component and the second component.

[0085] Referring to FIGS. 8-9, in some embodiments, the second component 20 has three abutting portions 21 with abutting surfaces 211 arranged obliquely relative to the direction of the optical axis L; in some embodiments, FIG. 8(a) shows a schematic view of the three-dimensional fit between the second component and the rolling element; FIG. 8(b) shows a cross-sectional view along section A in FIG. 8(a); FIG. 8(c) shows a cross-sectional view along section B or section C in FIG. 8(a). FIG. 9(a) shows a force analysis diagram along section A in FIG. 8(a); FIG. 9(b) shows a force analysis diagram of the cross-sectional view along section B or section C in FIG. 8(a); FIG. 9(c) shows a force analysis diagram perpendicular to the direction of the optical axis L in FIG. 8(a).

[0086] In some embodiments, the three abutting portions 21 include a first abutting portion 21a, a second abutting portion 21b", and a third abutting portion 21c" each having an abutting surface 211 arranged obliquely relative to the direction of the optical axis L, and the first abutting surface 211a, the second abutting surface 211b", and the third abutting surface 211c" included in the three abutting portions 21 are non-rotationally symmetric relative to the direction of the optical axis L. Here, "non-rotationally symmetric" means that any one of the first abutting surface 211a, the second abutting surface 211b", and the third abutting surface 211c" rotated to the position of the other two does not coincide with the abutting surface 211 corresponding to the other two. Specifically, the inclination of the corresponding first abutting surface 211a, second abutting surface 211b", and third abutting surface 211c" of the first abutting portion 21a, second abutting portion 21b, and third abutting portion 21c relative to the direction of the optical axis L is different, so that the abutting surface 211 of any one of them rotated to the position of the other two does not coincide with the abutting surface 211 corresponding to the other two. With this embodiment, the resultant force (F1-F2-F3, or f1+f2) of the thrust forces (F1 or F2 or F3) perpendicular to the direction of the optical axis L formed between the first abutting surface 211a, the second abutting surface 211b", and the third abutting surface 211c" and the rolling element 30 with which they are fitted is not zero. This resultant force (F1-F2-F3) has a thrusting action on the second component 20 in the radial direction, so that the second component 20 and the first component 10 can clamp the rolling element 30, thereby preventing the second component 20 from moving radially when it is rotated relative to the first component 10.

[0087] Specifically, referring to FIGS. 8(a)-(c), the first abutting surface 211a has a first inclination a with respect to the optical axis direction, the second abutting surface 211b" has a second inclination β with respect to the optical axis direction, and the third abutting surface 211c" has a third inclination β with respect to the optical axis direction. The absolute value of the first inclination a is greater than the absolute value of the second inclination β. In some embodiments, the absolute value of the first inclination a is greater than 2 times the absolute value of the second inclination β. In some embodiments, the second abutting portion 21b" and the third abutting portion 22b" further have reaction force portions 212b" and 212c" for applying reaction forces (f1', f2') generated by the rolling elements 30b and 30c to the second component, so that the total force (F1-F2-F3+f1'+f2') acting on the second component is zero, thereby maintaining the stability of dynamic balance.

[0088] Further, referring to FIG. 8 and the force analysis diagram of the present embodiment shown in FIGS. 9(a)-(c), the first abutting surface 211a is configured to cooperate with the rolling element 30a to generate a radial component F1 based on the vertical driving force VF along the optical axis L, the second abutting surface 211b" is configured to cooperate with the rolling element 30b to generate a radial component F2 based on the vertical driving force VF along the optical axis L, and the third abutting surface 211c" is configured to cooperate with the rolling element 30c to generate a radial component F3 based on the vertical driving force VF along the optical axis L. The radial components generated by the three abutting surfaces and the corresponding rolling elements based on the vertical driving force VF applied to the second component are F1-F2-F3, or f1+f2. Since a is not equal to β, and a is greater than 2β, F1-F2-F3 is not zero. That is, the radial components generated by the three abutting surfaces and the corresponding rolling elements based on the vertical driving force VF applied to the second component are F1-F2-F3, which is not zero. It can be understood that F1-F2-F3 can be decomposed into a first sub-component f1 and a second sub-component f2 for the reaction force portions 212b" and 212c" of the second abutting portion 21b" and the third abutting portion 21c" to counteract the corresponding rolling elements 30b" and 30c".

[0089] More specifically, after the vertical driving force VF acts on the first abutting surface 211a, the side of the rolling member 30a is pressed, the rolling member 30a is in contact with the side surface and the bottom surface of the first component 10, and thus the rolling member 30 generates a reaction force G relative to the first abutting surface 211a. After the reaction force G is decomposed into a force in the optical axis direction and a force in the radial direction, a first component force F1 applied to the rotating assembly in the radial direction is obtained. Similarly, a second component force F2 and a third component force F3 are generated. As shown in the force analysis diagram of another perspective view of FIG. 9(c), the resultant force of the first component force F1, the second component force F2 and the third component force F3 is F1-F2-F3 or f1+f2, which can be decomposed into a first sub-component force f1 applied to the second rolling member 30b" and the third rolling member 30c", and a second sub-component force f2 applied to the third rolling member. In this embodiment, the first sub-component force f1 and the second sub-component force f2 can resist the reaction force of the reaction force part 212b" of the second abutting part 21b" and the reaction force of the reaction force part 212c" of the third abutting part 21c" to the corresponding rolling member 30b" and the rolling member 30c", so that the rolling member 30b" is clamped between the reaction force part 212b" of the second abutting part 21b" and the first component 10, and the rolling member 30c" is clamped between the reaction force part 212c" of the third abutting part 21c" and the first component 10. Therefore, the second component 20 does not move radially when rotating relative to the first component 10. In this embodiment, the resultant force F1-F2-F3 (f1+f2) of the first component force F1, the second component force F2 and the third component force F3 generated by the vertical driving force VF applied to the second component by the cooperation of the rolling member 30 and the abutting surface 21 is not 0, but because the rolling member 30b" generates a reaction force f1' of the first sub-component force f1 relative to the reaction force part 212b" of the second abutting part 21b", and the rolling member 30c" generates a reaction force f2' of the second sub-component force f2 relative to the reaction force part 212c" of the third abutting part 21c", the resultant force (F1-F2-F3+f1'+f2') of all the rolling members 30a, 30b" and 30c" to the second component is 0, so that the second component can maintain a dynamic balance state.

[0090] In some embodiments, the abutting surface 211 inclined in the direction of the optical axis L has an inclination relative to the direction of the optical axis L of 0° to 90° in absolute value. In some embodiments, the abutting surface 211 inclined in the direction of the optical axis L has an angle relative to the radial direction of the aperture device 100 of 45° to 60° in absolute value.

[0091] In some embodiments, the plurality of abutting parts 21 are connected to form a ring structure. In this embodiment, the processing difficulty of the abutting part 21 can be reduced.

[0092] It can be understood that according to the different embodiments described above, the first abutting surface 211a, the second abutting surface 211b and the third abutting surface 211c cooperate with the corresponding rolling element 30, so that at least one rolling element 30 is subjected to a force (for example, G in FIG. 5, FIG. 7, or, FIG. 9) in the radial direction, which is not equal to 0 (due to the vertical driving force VF applied to the second part). Since the rolling element 30 in contact with the abutting surface 211 is subjected to a force G in the radial direction, which is not equal to 0, the reaction force of the rolling element 30 on the abutting surface 211 also has a component in the radial direction (for example, F1 in FIG. 5, F3 in FIG. 7, or, F1-F2-F3 in FIG. 9), which has a pushing effect on the second part 20 in the radial direction, so that the remaining abutting portion 21 of the second part 20 and the first part 10 together can clamp the corresponding rolling element 30, so that the second part 20 does not move radially when rotating relative to the first part 10.

[0093] In some embodiments, the non-inclined surface is parallel to the optical axis L. Further, the non-inclined surface is a curved surface parallel to the optical axis L.

[0094] In some embodiments, there is a predetermined gap between the first part 10 and the second part 20. That is, the first part 10 and the second part 20 are not in contact. In this embodiment, during relative rotation between the first part 10 and the second part 20, the first part 10 and the second part 20 do not generate direct frictional force between each other due to mutual contact, which affects the smooth rotation between the first part 10 and the second part 20. Preferably, the predetermined gap is provided with the aforementioned rolling element 30. It can be understood that before the aperture device is assembled, there is an assembly gap between the first part 10 and the second part 20, which is different from the predetermined gap. The radial component (for example, F1 in FIG. 5, F3 in FIG. 7, or, F1-F2-F3 in FIG. 9) generated by the cooperation between the abutting portion and the rolling element can eliminate the assembly gap between the first part 10 and the second part 20.

[0095] In some embodiments, the pre-set gap between the first component 10 and the second component 20 remains unchanged (i.e. the assembly gap is eliminated) during the operation of the aperture device 100. That is, the relative positions of the first component 10 and the second component 20 do not change during the relative rotation of the first component 10 and the second component 20. Therefore, the positions of the first component 10 and the second component 20 remain constant during the relative rotation, which avoids the deviation of the result of detecting the relative displacement between the first component 10 and the second component 20 when adjusting the light quantity, and thus makes the control of the relative rotation amount between the first component 10 and the second component 20 more accurate. Meanwhile, as mentioned above, if the rotating component of the first component 10 and the second component 20 is used to drive the plurality of leaf assembly 60 of the aperture device 100 to open or retract so as to adjust the diameter of the light passing hole H formed by the plurality of leaf assembly 60, the leaf assembly 60 will not move in a small range due to the radial movement of the rotating component, which will not cause the diameter of the light passing hole H to change and thus cause the light quantity of the aperture device 100 to fluctuate and affect the imaging quality of the imaging device.

[0096] In some embodiments, the first component 10 and the second component 20 are attracted to each other during the operation of the aperture device 100, or the relative distance between the first component 10 and the second component 20 in the radial direction remains unchanged during the operation of the aperture device 100.

[0097] In some embodiments, the first component 10 and the second component 20 are attracted to each other during the operation of the aperture device 100, or the relative distance between the first component 10 and the second component 20 in the radial direction remains unchanged during the operation of the aperture device 100.

[0098] Next, the source of the aforementioned vertical driving force VF will be introduced.

[0099] As shown in FIG. 1 and FIG. 11, in some embodiments, the aperture device 100 further comprises a driving assembly 50 for generating a vertical driving force VF applied to the second component 20 along the optical axis L. The vertical driving force VF makes the abutting surface 211, which is arranged obliquely to the optical axis L, always abut against the corresponding rolling element 30, so that the reaction force of the rolling element 30 corresponding to the first abutting surface 211a on the rotating ring generates a component (e.g. F1 in FIG. 5, F3 in FIG. 7, or F1-F2-F3 in FIG. 9) perpendicular to the optical axis L, which has a pushing effect on the rotating ring in the direction perpendicular to the optical axis L, and under the pushing effect of the component (e.g. F1 in FIG. 5, F3 in FIG. 7, or F1-F2-F3 in FIG. 9), the second abutting surface 211b, which is arranged parallel to the optical axis L, and the fixed ring jointly clamp the rolling element 30 abutting against the second abutting surface 211b, so that the rotating ring does not move radially relative to the fixed ring during rotation.

[0100] It should be noted that the driving assembly 50 is not limited to being a part of the aperture device 100. For example, in some other embodiments, the driving assembly 50 can be a part of the lens assembly, such as the driving assembly 50 being a magnetic member, the driving assembly 50 being mounted to the housing of the lens assembly, and the second component 20 of the aperture device 100 being at least partially a magnetic-attraction member, the driving assembly 50 and the second component 20 generating the vertical driving force VF applied to the second component 20 along the optical axis L through magnetic force action. The “magnetic member” refers to a component made of a magnetic material, such as a magnet. The “magnetic-attraction member” refers to a component that can be attracted by a magnetic member, such as a component made of iron, cobalt, nickel, or iron-cobalt alloy, cobalt-nickel alloy, iron-nickel alloy, or iron-cobalt-nickel.

[0101] Alternatively, in some other embodiments, the driving assembly 50 is partially a part of the aperture device 100 and partially a part of the lens assembly, such as the driving assembly 50 comprising a magnetic member and a magnetic-attraction member, one of the magnetic member and the magnetic-attraction member being mounted to the housing of the lens assembly, and the other of the magnetic member and the magnetic-attraction member being mounted to the second component 20, the magnetic member and the magnetic-attraction member generating the vertical driving force VF applied to the second component 20 along the optical axis L through magnetic force action.

[0102] In some embodiments, the vertical driving force is a non-contact force or a non-load fluctuation force. In the present embodiments, the "non-contact force" means that the two components interacting to generate the vertical driving force do not contact each other. The "non-load fluctuation force" means that the force between the two components interacting to generate the vertical driving force remains constant and does not fluctuate. In this embodiment, by setting the vertical driving force as a non-contact force or a non-load fluctuation force, the second component 20 can be prevented from shaking due to friction or load fluctuation when the second component 20 rotates relative to the first component 10, so that the rotation of the second component 20 relative to the first component 10 can be performed smoothly. For example, the use of a tension spring / pressure spring / torsion spring or the like to generate the vertical driving force can be avoided to affect the load stability of the aperture device.

[0103] In some embodiments, the vertical driving force is at least one of a field force or a nuclear force.

[0104] In some embodiments, the vertical driving force is a magnetic force.

[0105] As shown in FIG. 11, in some embodiments, the driving assembly 50 includes a first driving member 52 and a second driving member 53, the first driving member 52 is arranged on the first component 10, and the second driving member 53 is arranged on the second component 20. The first driving member 52 and the second driving member 53 cooperate with each other to generate the vertical driving force VF applied to the second component 20 in the direction of the optical axis L.

[0106] In some embodiments, one of the first driving member 52 and the second driving member 53 is a permanent magnet 52', i.e., the magnetic member described above, and the other is a cooperating member 53' attracted to the permanent magnet 52', i.e., the magnetic attraction member described above. As described above, the first driving member 52 and the second driving member 53 generate the vertical driving force VF applied to the second component 20 in the direction of the optical axis L through magnetic attraction force interaction. The first driving member 52 and the second driving member 53 do not need to contact each other, so that the second component 20 can be prevented from shaking due to friction when the second component 20 rotates relative to the first component 10, so that the rotation of the second component 20 relative to the first component 10 can be performed smoothly.

[0107] In some embodiments, the cooperating member 53' has a circular ring shape.

[0108] In some embodiments, the permanent magnet 52' includes a magnet, and the cooperating member 53' includes a magnet cooperating member 53' capable of generating a relative force with the magnet.

[0109] In some embodiments, the second driving member 53 comprises a plurality of permanent magnets 52' arranged on the second component 20 at intervals, and the first driving member 52 comprises a matching member 53' arranged on the first component 10 for attracting the permanent magnets 52', wherein the matching member 53' is arranged perpendicularly to the optical axis L and is arranged opposite to the plurality of permanent magnets 52' in the direction of the optical axis L. In this embodiment, the magnetic force between the first driving member 52 and the second driving member 53 is parallel to the direction of the optical axis L, which facilitates the smooth rotation of the second component 20.

[0110] It should be noted that the permanent magnets 52' are not limited to being arranged on the second component 20, and the matching member 53' is not limited to being arranged on the first component 10. For example, in some other embodiments, the first driving member 52 comprises a plurality of permanent magnets 52' arranged on the first component 10 at intervals, and the second driving member 53 comprises a matching member 53' arranged on the second component 20 for attracting the permanent magnets 52'.

[0111] It should be noted that the positional relationship between the permanent magnets 52' and the matching member 53' is not limited to the above-mentioned embodiments. For example, in some other embodiments, as shown in FIG. 12, the matching member 53' is arranged obliquely to the direction of the optical axis L, and the permanent magnets 52' are arranged obliquely opposite to the matching member 53' in the radial direction.

[0112] For another example, in some other embodiments, as shown in FIG. 13, the permanent magnets 52' and the matching member 53' are arranged obliquely to the direction of the optical axis L, and the permanent magnets 52' are arranged opposite to the matching member 53'.

[0113] As shown in FIG. 1, in some embodiments, the aperture device 100 further comprises a driving assembly 50 for generating a rotational driving force for rotating the second component 20 relative to the first component 10 about the optical axis L.

[0114] In some embodiments, the rotational driving force is a non-contact force or a non-load fluctuation force. In this embodiment, the "non-contact force" means that the two components interacting to generate the rotational driving force are not in contact. The "non-load fluctuation force" means that the force between the two components interacting to generate the rotational driving force remains constant and does not fluctuate. In this embodiment, by setting the rotational driving force as a non-contact force or a non-load fluctuation force, the second component 20 can be prevented from shaking when rotating relative to the first component 10, so that the rotation of the second component 20 relative to the first component 10 can be carried out smoothly.

[0115] In some embodiments, the rotational driving force is at least one of the following: a field force or a nuclear force.

[0116] In some embodiments, the rotational driving force is a magnetic force.

[0117] As shown in FIG. 1, in some embodiments, the driving assembly 50 comprises a first driving member 52 and a third driving member 54, the first driving member 52 is arranged on the first component 10, the third driving member 54 is arranged on the second component 20, and the first driving member 52 and the third driving member 54 cooperate to generate a rotating driving force for relatively rotating the first component 10 and the second component 20 along the optical axis L.

[0118] In some embodiments, the first driving member 52 is a magnet, and the third driving member 54 is an electromagnet.

[0119] In some embodiments, the electromagnet comprises a coil.

[0120] In some embodiments, the driving assembly 50 comprises a fourth driving member (not shown in the figure), and the fourth driving member is used to drive the second component 20 to rotate around the optical axis L.

[0121] In some embodiments, the second component 20 is provided with a driving part 51 or a driving part 51 connected to the second component 20, and the driving part 51 is used to cooperate with the blade assembly 60 to control the light passing amount of the aperture device 100.

[0122] In some embodiments, the fourth driving member is an electric motor.

[0123] In some embodiments, the aperture device 100 further comprises a transmission assembly (not shown in the figure), and the fourth driving member is connected to the second component 20 through the transmission assembly to drive the second component 20 to rotate.

[0124] In some embodiments, the transmission assembly comprises at least one of a gear assembly, a belt pulley assembly, and a connecting rod assembly.

[0125] As shown in FIG. 10, in some embodiments, the aperture device 100 further comprises a position sensor 70, and the position sensor 70 is arranged on the first component 10 or / and the second component 20, and the position sensor 70 is used to sense the relative position change of the first component 10 and the second component 20.

[0126] In the above description, the position sensor 70 arranged on the first component 10 or / and the second component 20 means that the position sensor 70 can be arranged entirely on the first component 10, entirely on the second component 20, partially on the first component 10, or partially on the second component 20, which can be determined according to the type of the position sensor 70.

[0127] In the embodiment, the relative position change between the first component 10 and the second component 20 is sensed by the position sensor 70 arranged on the aperture device 100, and the value transmitted by the position sensor 70 can be used to precisely control the relative rotation between the first component 10 and the second component 20. When one of the first component 10 and the second component 20 is used to drive the blade assembly 60 of the aperture device 100 to rotate to adjust the size of the light passing hole H formed by the plurality of blade assemblies 60 to control the light passing amount of the aperture device 100, the position sensor 70 can be used to precisely control the aperture of the light passing hole H of the aperture device 100, that is, to precisely adjust the light passing amount of the aperture device 100, thereby improving the imaging quality of the photographing device.

[0128] In some embodiments, the position sensor 70 includes at least one of a magnetoresistance effect sensor, a passive infrared sensor, and a Hall sensor.

[0129] In some embodiments, the aperture device 100 further includes a first driving member 52 for driving the relative rotation of the first component 10 and the second component 20, one of the position sensor 70 and the first driving member 52 is arranged on the second component 20, and the other is arranged on the first component 10. The position sensor 70 is used to determine the relative position change between the first component 10 and the second component 20 or to sense the rotation speed of the first component 10 by sensing the displacement of at least one component of the first driving member 52.

[0130] In this embodiment, the first driving member 52 is used to drive the relative rotation of the first component 10 and the second component 20 and to cooperate with the position sensor 70 to determine the relative position change between the first component 10 and the second component 20 or to sense the rotation speed of the first component 10, that is, one component has two functions, which can reduce the number of components and simplify the structure of the device.

[0131] In some embodiments, the first driving member 52 includes a plurality of magnetic force members, and the plurality of magnetic force members are arranged on the first component 10 or the second component 20 in a circumferential direction. The position sensor 70 includes a Hall sensor.

[0132] In some embodiments, the number of position sensors 70 is a plurality, and the plurality of position sensors 70 correspond to the plurality of magnetic force members one by one. For example, in an embodiment, the first driving member 52 includes three groups of magnetic force members, the three groups of magnetic force members are arranged on the second component 20 in a circumferential direction, and the number of position sensors 70 is three. The three position sensors 70 are arranged on the first component 10 in a circumferential direction.

[0133] It should be noted that the position sensor 70 and the magnetic force assembly are not necessarily arranged in a one-to-one correspondence. For example, in one embodiment, the number of magnetic force pieces is multiple groups, the multiple groups of magnetic force pieces are arranged at intervals in the circumferential direction on the second component 20, and the number of position sensors 70 is one, which is arranged on the first component 10 and corresponds to one of the groups of magnetic force pieces.

[0134] In some embodiments, each group of magnetic force pieces includes one or more permanent magnets 52'. For example, in one embodiment, each group of magnetic force pieces includes two permanent magnets 52'.

[0135] In some embodiments, when the position sensor 70 is located on the second component 20, the position sensor 70 is wired through a soft electrical connection. In this implementation, the soft electrical connection has small stress, and when the second component 20 rotates relative to the first component 10, the electrical connection has small resistance to the second component 20, avoiding the electrical connection from abutting against the second component 20.

[0136] In some embodiments, the electrical connection includes a suspension wire or an etching spring.

[0137] In some embodiments, when the position sensor 70 is located on the first component 10, the position sensor 70 is located on the radially inner side of the first component 10, and the first driving piece 52 is located on the radially outer side of the second component 20. In this implementation, the position sensor 70 and the first driving piece 52 are relatively close, the position sensor 70 can obtain stronger signals, and the accuracy of the measurement results can be improved. Of course, the position of the position sensor 70 and the position of the first driving piece 52 are not limited to the above-mentioned implementation, for example, in other embodiments, the position sensor 70 is located on the radially outer side of the first component 10, the first driving piece 52 is located on the radially outer side of the second component 20, or the position sensor 70 is located on the radially inner side of the first component 10, the first driving piece 52 is located on the radially inner side of the second component 20, or the position sensor 70 is located on the radially outer side of the first component 10, and the first driving piece 52 is located on the radially inner side of the second component 20, which are all possible, and the specific design can be determined according to actual needs.

[0138] As shown in FIG. 10, in some embodiments, the inner side of the first component 10 is provided with a groove 14 extending in the radial direction, and the groove 14 is used to mount the position sensor 70. In this implementation, by mounting the position sensor 70 in the groove 14, the first component 10 does not need to increase in size to provide space for mounting the position sensor 70, so that the aperture device 100 can be miniaturized.

[0139] In some embodiments, the field strength of the first driving member 52 is greater than a preset multiple of the minimum threshold value at which the position sensor 70 senses the field strength. In this implementation, the signal that the position sensor 70 can obtain is stronger, and the accuracy of the measurement result can be improved. For example, in some embodiments, the preset multiple is 1-2 times.

[0140] In some embodiments, the position sensor 70 includes a Hall sensor, and the first driving member 52 can generate a magnetic field.

[0141] As shown in FIG. 1, in some embodiments, the aperture device 100 further includes an elastic assembly 80 connected with the blade holder 40. The elastic assembly 80 includes a plurality of elastic members 81, and at least part of the plurality of elastic members 81 are integrally formed. The elastic assembly 80 is used to abut with the plurality of blade assemblies 60, so that the edges of the guide portions 61 abut the driving portions 51 of the driving assembly 50 through the elastic force of the elastic members 81. Wherein, the “at least part of the plurality of elastic members 81” refers to at least some of the plurality of elastic members 81. For example, if the elastic members 81 are six, one, two, three, or four of the six elastic members 81 are the at least part of the plurality of elastic members 81.

[0142] The aperture device 100 proposed in the embodiment first abuts the plurality of blade assemblies 60 with the elastic assembly 80, and makes the edges of the guide portions 61 of the blade assemblies 60 abut the driving portions 51 of the driving assembly 50 through the elastic force of the elastic members 81. Since the edges of the guide portions 61 of the blade assemblies 60 and the driving portions 51 of the driving assembly 50 are in an abutting state, when the photographing device vibrates, the blade assemblies 60 will not move a small range relative to the driving portions 51 of the driving assembly 50 under the restriction of the driving portions 51, that is, the diameter of the light passing hole H will not fluctuate, so that the light amount of the light passing hole H remains constant, thereby improving the imaging quality of the photographing device. Secondly, the integrally formed setting of at least part of the plurality of elastic members 81 can reduce the assembly times of the elastic members 81, at least to a certain extent, reduce the assembly and manufacturing difficulty of the aperture device 100, save manpower and material resources, especially when the structure size of the aperture device 100 is small, if the elastic members 81 are not integrally formed, the elastic members 81 need to be hung on the blade assemblies 60 in the installation process, and the rigidity of the blade assemblies 60 is low and the shape is unstable, and it also needs to be bent, which causes great difficulty in the assembly process. In addition, the integrally formed setting can neutralize the elastic error between the plurality of elastic members 81, so that the blade assemblies 60 are balanced in force, which is conducive to the stable rotation of the plurality of blade assemblies 60.

[0143] As shown in FIG. 1, in some embodiments, the leaf support 40 includes a support plate 41, and at least part of the plurality of elastic members 81 are integrally formed with the support plate 41. In this embodiment, the elastic members 81 integrally formed with the support plate 41 do not need to be assembled additionally, which can reduce the assembly and manufacturing difficulty of the aperture device 100 to some extent, and save manpower and resources.

[0144] As shown in FIG. 1, in some embodiments, the plurality of elastic members 81 are integrally formed with the support plate 41. In this embodiment, since all the elastic members 81 do not need to be assembled additionally, the assembly and manufacturing difficulty of the aperture device 100 can be maximized to reduce, and manpower and resources can be saved.

[0145] It should be noted that at least part of the plurality of elastic members 81 are not limited to being arranged to be integrally formed with the support plate 41, for example, in other embodiments, as shown in FIG. 1, the leaf support 40 includes a bottom plate 42 and / or a back plate 43, and at least part of the plurality of elastic members 81 are integrally formed with the bottom plate 42 or the back plate 43. In this embodiment, the elastic members 81 integrally formed with the bottom plate 42 or the back plate 43 do not need to be assembled additionally, which can also reduce the assembly and manufacturing difficulty of the aperture device 100 to some extent, and save manpower and resources.

[0146] In some embodiments, the plurality of elastic members 81 are integrally formed with the bottom plate 42 or the back plate 43. In this embodiment, since all the elastic members 81 do not need to be assembled additionally, the assembly and manufacturing difficulty of the aperture device 100 can be maximized to reduce, and manpower and resources can be saved.

[0147] As shown in FIG. 1, in some embodiments, the leaf support 40 includes the support plate 41, the bottom plate 42, and the back plate 43, the plurality of leaf assemblies 60 are located between the bottom plate 42 and the back plate 43, and the support plate 41 is located on the side of the bottom plate 42 away from the back plate 43. Of course, it is not limited to this layout, for example, in other embodiments, the support plate 41 can be arranged between the bottom plate 42 and the back plate 43, or the support plate 41 can be arranged on the side of the back plate 43 away from the bottom plate 42, which can be determined according to actual design needs.

[0148] As shown in FIG. 1, in some embodiments, the elastic assembly 80 further includes a main body 82, and at least part of the plurality of elastic members 81 are integrally formed with the main body 82. In this embodiment, the elastic members 81 integrally formed with the main body 82 can not need to be assembled additionally, which can reduce the assembly difficulty of the aperture device 100 to some extent, and save manpower and resources.

[0149] As shown in FIG. 1, in some embodiments, the elastic member 81 is a planar sheet structure, and is arranged perpendicular to the direction of the optical axis L.

[0150] In some embodiments, the elastic members 81 are integrally formed by etching. The etching process can very precisely manufacture the fine shape of the elastic members 81, reducing the elastic force error between the elastic members 81 due to manufacturing errors. Of course, the elastic members 81 are not limited to being integrally formed by etching, for example, in other embodiments, the elastic members 81 can also be integrally formed by machining, such as wire cutting or stamping.

[0151] As shown in FIG. 1, in some embodiments, the aperture device 100 further comprises an elastic assembly 80 connected with the blade holder 40, the elastic assembly 80 comprising a plurality of elastic members 81 and a plurality of limiting portions 83 corresponding to the plurality of elastic members 81, and the plurality of blade assemblies 60 comprising limiting matching portions 62, the limiting portions 83 and the limiting matching portions 62 being in abutting cooperation to make the edges of the guide portions 61 of the blade assemblies 60 abut the driving portions 51 of the driving assemblies 50 by the elastic force of the elastic members 81. As described above, the edges of the guide portions 61 of the blade assemblies 60 abut the driving portions 51 of the driving assemblies 50 by the elastic force of the elastic members 81, and since the edges of the guide portions 61 of the blade assemblies 60 and the driving portions 51 of the driving assemblies 50 are in abutting state, when the photographing device vibrates, the blade assemblies 60 will not move a small range relative to the driving portions 51 of the driving assemblies 50 under the limiting action of the driving portions 51, that is, the diameter of the light passing hole H will not fluctuate, so that the light entering amount of the light passing hole H remains constant, thereby improving the imaging quality of the photographing device.

[0152] As shown in FIG. 1, in some embodiments, the limiting matching portions 62 are limiting grooves C, and the limiting portions 83 are limiting shafts D, that is, the limiting grooves C are provided on the blade assemblies 60, and the limiting shafts D are provided on the elastic assembly 80, and the limiting shafts D are arranged in the limiting grooves C. It should be noted that the positions of the limiting grooves C and the limiting shafts D can be interchanged, that is, the limiting grooves C can be provided on the elastic assembly 80, and the limiting shafts D can be provided on the blade assemblies 60, which can be determined according to actual design needs.

[0153] In some embodiments, one side of each blade assembly 60 is rotatably connected with the blade holder 40.

[0154] As shown in FIG. 1, in some embodiments, the aperture device 100 further comprises an elastic assembly 80, the elastic assembly 80 comprising a plurality of elastic limiting portions 83 and a main body 82 connected with the plurality of elastic limiting portions 83, and the plurality of elastic limiting portions 83 and the main body 82 are integrally formed in an integrally formed structure. In this embodiment, all the elastic members 81 integrally formed with the main body 82 can be assembled without additional assembly, which can maximize the assembly difficulty of the aperture device 100 and save manpower and resources.

[0155] As shown in FIG. 1, in some embodiments, the elastic limiting part 83 comprises an elastic piece 81 and a limiting part 83, the elastic piece 81 comprises a connecting end 811, a stress adjusting part 812 and a matching end 813, the connecting end 811 is used to fixedly connect one end of the elastic piece 81 with the blade support 40, the stress adjusting part 812 is used to connect the connecting end 811 and the matching end 813 to reduce the stress between the connecting end 811 and the matching end 813, and the matching end 813 is used to connect the limiting part 83, so that the elastic piece 81 applies elastic force to the edge of the guiding part 61 of the blade assembly 60 through the limiting part 83. As described above, the edge of the guiding part 61 of the blade assembly 60 is in abutment with the driving part 51 of the driving assembly 50 by the elastic force of the elastic piece 81, and since the edge of the guiding part 61 of the blade assembly 60 and the driving part 51 of the driving assembly 50 are in abutment, when the photographing device vibrates, the blade assembly 60 will not move a small range relative to the driving part 51 of the driving assembly 50 under the limiting action of the driving part 51, that is, the diameter of the light passing hole H will not fluctuate, so that the light passing amount of the light passing hole H remains constant, thereby improving the imaging quality of the photographing device.

[0156] As shown in FIG. 1, in some embodiments, the limiting matching part 62 and the guiding part 61 of the plurality of blade assemblies 60 are arranged at intervals in the direction around the optical axis L, and the pivot part 63 is located outside the limiting matching part 62 and the guiding part 61.

[0157] In other embodiments, each blade assembly 60 further comprises a pivot part 63 and a limiting matching part 62, the blade assembly 60 is rotationally connected with the first part 10 or the blade support 40 through the pivot part 63, and the limiting matching part 62 is located between the pivot part 63 and the guiding part 61 in the radial direction of the diaphragm device 100.

[0158] According to one or more embodiments provided in the foregoing, a more detailed implementation is provided to illustrate the beneficial effects of the present application.

[0159] The aperture device comprises a rotating ring on which a magnet and a coil are arranged, and a fixed ring on which a magnet matching part (e.g. a yoke) and a position detection sensor are arranged, the position detection sensor being used to detect the rotating angle of the rotating ring to realize the control of the light quantity. A ball is arranged between the rotating ring and the fixed ring, one or more surfaces of the rotating ring in contact with the ball are inclined surfaces, a driving force in the direction of the optical axis of the rotating ring is generated by the coil and the magnet matching part and applied to the rotating ring, the ball cooperates with the inclined surface to convert part of the vertical driving force in the direction of the optical axis of the rotating ring into a force perpendicular to the direction of the optical axis (e.g. F1 in FIG. 5, F3 in FIG. 7, or F1-F2-F3 in FIG. 9), so that an attractive force in the direction of the optical axis and the radial direction (the force perpendicular to the direction of the optical axis) is generated respectively, and the rotating ring is pulled towards the fixed ring. Thus, the assembly gap between the rotating ring and the fixed ring is eliminated, so that the backlash is eliminated, condition A is realized; at the same time, even if the aperture device is subjected to vibration, the rotating ring will not move due to external force, so that the distance change between the position detection sensor and the rotating ring is eliminated, condition B is realized; since the rotating ring is held by using the ball, the sliding load is small due to the rolling friction, at the same time, the coil and the magnet matching part are used to generate a driving force in the direction of the optical axis of the rotating ring, which is a non-contact force, and there is no need to use a torsional spring to generate a driving force, so that the load fluctuation is small, condition C is satisfied; in summary, the high-precision light quantity control of the aperture device is realized, so that it can be used in the working conditions and use environments of the motion camera, movable object and other electronic devices with complex working conditions and use environments.

[0160] As shown in FIGS. 1-13, the embodiment of the present application also proposes an aperture device 100, which comprises a fixed ring 101, a rotating ring 102 and at least three rolling elements 30. The rotating ring 102 is arranged at least partially in the surrounding space of the fixed ring 101, and the rotating ring 102 is rotatable relative to the fixed ring 101. The at least three rolling elements 30 are arranged between the fixed ring 101 and the rotating ring 102 and are distributed in the surrounding space of the optical axis L. The rotating ring 102 is provided with at least three abutting portions 21, the at least three abutting portions 21 correspondingly abut the at least three rolling elements 30, at least one abutting portion 21 comprises a first abutting surface 211a abutting the rolling element 30, at least one abutting portion 21 comprises a second abutting surface 211b abutting the rolling element 30, the first abutting surface 211a is arranged inclined relative to the direction of the optical axis L, and the second abutting surface 211b is arranged parallel relative to the direction of the optical axis L. The first abutting surface 211a cooperates with the corresponding rolling element 30 to generate a component force perpendicular to the direction of the optical axis L (e.g. F1 in FIG. 5, F3 in FIG. 7, or F1-F2-F3 in FIG. 9) by a vertical driving force VF applied to the rotating ring 102 in the direction of the optical axis L.

[0161] The "rotation ring 102 is at least partially arranged in the circumferential space of the fixed ring 101" means that the rotation ring 102 can be entirely arranged inside the fixed ring 101, or the rotation ring 102 can be partially arranged inside the fixed ring 101 and partially protrude from the fixed ring 101 in the direction of the optical axis L. The "the first abutting surface 211a cooperates with the corresponding rolling element 30 to generate a component force (for example, F1 in FIG. 5, F3 in FIG. 7, or F1-F2-F3 in FIG. 9) perpendicular to the direction of the optical axis L by the vertical driving force VF applied to the rotation ring 102 in the direction of the optical axis L" means that the vertical driving force applied to the rotation ring 102 in the direction of the optical axis L causes the first abutting surface 211a to be pressed against the corresponding rolling element 30. Since the first abutting surface 211a is arranged obliquely with respect to the direction of the optical axis L, the reaction force of the rolling element 30 on the first abutting surface 211a generates a component force (for example, F1 in FIG. 5, F3 in FIG. 7, or F1-F2-F3 in FIG. 9) perpendicular to the optical axis L. The component force (for example, F1 in FIG. 5, F3 in FIG. 7, or F1-F2-F3 in FIG. 9) acts on the rotation ring 102 and has a pushing effect on the rotation ring 102 in the direction perpendicular to the optical axis L.

[0162] The aperture device 100 provided in the embodiment of the present application comprises at least one abutting portion 21, the at least one abutting portion 21 comprises a first abutting surface 211a abutting with the rolling member 30, and the at least one abutting portion 21 comprises a second abutting surface 211b abutting with the rolling member 30, the first abutting surface 211a is arranged obliquely relative to the direction of the optical axis L, the second abutting surface 211b is arranged parallel to the direction of the optical axis L, and a vertical driving force VF applied to the rotating ring 102 along the direction of the optical axis L, due to the oblique arrangement of the first abutting surface 211a relative to the direction of the optical axis L, the reaction force of the rolling member 30 corresponding to the first abutting surface 211a on the rotating ring 102 generates a component force (for example, F1 in FIG. 5, F3 in FIG. 7, or F1-F2-F3 in FIG. 9) perpendicular to the optical axis L, the component force (for example, F1 in FIG. 5, F3 in FIG. 7, or F1-F2-F3 in FIG. 9) has a pushing effect on the rotating ring 102 in the direction perpendicular to the optical axis L, and under the pushing of the component force (for example, F1 in FIG. 5, F3 in FIG. 7, or F1-F2-F3 in FIG. 9), the second abutting surface 211b arranged parallel to the direction of the optical axis L and the fixed ring 101 jointly clamp the rolling member 30 abutting with the second abutting surface 211b, in this way, the rotating ring 102 does not move radially during rotation relative to the fixed ring 101, if the rotating ring 102 is used to drive the plurality of blade assemblies 60 of the aperture device 100 to open or retract to adjust the diameter of the light passing hole H formed by the plurality of blade assemblies 60, the blade assemblies 60 will not move a small range due to the radial movement of the rotating ring 102, causing the diameter of the light passing hole H to change, causing the light amount of the aperture device 100 to fluctuate and affecting the imaging quality of the imaging device. Moreover, since the rotating ring 102 does not move radially during rotation relative to the fixed ring 101, the position of the rotating ring 102 relative to the fixed ring 101 remains constant during rotation, if a position sensor 70 is arranged on the fixed ring 101 and / or the rotating ring 102 to detect the relative rotation amount of the rotating ring 102 relative to the fixed ring 101, the detection result is also relatively accurate, making the control of the rotation amount of the rotating ring 102 relative to the fixed ring 101 also relatively accurate, so that the diameter of the light passing hole H of the blade assembly 60 can be accurately controlled, that is, the light amount of the aperture device 100 can be accurately controlled, avoiding the influence of inaccurate light amount on the imaging quality.

[0163] It should be noted that the fixed ring 101 provided in the embodiment is the first component 10 provided in the above-mentioned embodiment, the rotating ring 102 provided in the embodiment is the second component 20 provided in the above-mentioned embodiment, and the structure, connection relationship, extension description and beneficial effects of other components of the imaging device provided in the embodiment can refer to the above-mentioned embodiments, which will not be described here.

[0164] As shown in FIGS. 1-13, the embodiment of the present application also proposes an aperture device 100, which comprises a rotating part 103, a fixed part 104, and at least three rolling members 30. The rotating part 103 is annular in structure, the fixed part 104 is annular in structure and is arranged around the circumferential outer side of the rotating part 103. The rotating part 103 and the fixed part 104 can rotate relative to each other. The rotating part 103 is provided with at least three abutting portions 21 which are distributed along the circumferential direction. The at least three rolling members 30 are distributed along the circumferential direction of the rotating part 103 and are clamped between the at least three abutting portions 21 of the rotating part 103 and the fixed part 104. The at least three rolling members 30 are of the same specification. Among them, the at least three abutting portions 21 and the at least three rolling members 30 correspond one-to-one. The at least three abutting portions 21 comprise abutting surfaces 211 which are arranged non-rotationally symmetrically relative to the rotating shaft in the direction parallel to the optical axis L. When the first part 10 and the second part 20 rotate relative to each other, the rolling member 30 can always abut against the abutting surface 211.

[0165] Among them, the "non-rotationally symmetrically arranged" means that any one of the corresponding abutting surfaces 211 of the at least three abutting portions 21 rotates to the position of the other abutting surface 211, and does not coincide with the other abutting surface 211.

[0166] The aperture device 100 provided in the embodiment of the present application comprises at least three abutting portions 21, and the abutting surface 211 of each abutting portion 21 is arranged in a non-rotationally symmetrical manner relative to the rotation axis parallel to the optical axis L. In this way, the resultant force (for example, F1 in FIG. 5, F3 in FIG. 7, or F1-F2-F3 in FIG. 9) of the thrust forces (for example, F1 in FIG. 5, F1, F2 in FIG. 7, or F1, F2 and F3 in FIG. 9) formed between the abutting surface 211 of each abutting portion 21 and the respective cooperating rolling element 30 and perpendicular to the optical axis L is not zero. The resultant force (for example, F1 in FIG. 5, F3 in FIG. 7, or F1-F2-F3 in FIG. 9) has a pushing effect on the rotating component 103 in the radial direction, so that the rolling element 30 can be clamped between the rotating component 103 and the fixed component 104, thereby preventing the rotating component 103 from moving radially when the rotating component 103 rotates relative to the fixed component 104. If the rotating component 103 is used to drive the plurality of blade assemblies 60 of the aperture device 100 to open or close so as to adjust the diameter of the light passing hole H formed by the plurality of blade assemblies 60, the blade assemblies 60 will not move slightly due to the radial movement of the rotating component 103, which will cause the diameter of the light passing hole H to change and the amount of light entering the aperture device 100 to fluctuate, thereby affecting the imaging quality of the imaging device. Moreover, since the rotating component 103 does not move radially during rotation relative to the fixed component 104, the position of the rotating component 103 relative to the fixed component 104 remains constant during rotation. If a position sensor 70 is arranged on the fixed component 104 and / or the rotating component 103 to detect the relative rotation amount of the rotating component 103 relative to the fixed component 104, the detection result is also relatively accurate, and the control of the rotation amount of the rotating component 103 relative to the fixed component 104 is also relatively accurate, so that the diameter of the light passing hole H of the blade assembly 60 can be accurately controlled, that is, the amount of light entering the aperture device 100 can be accurately controlled, thereby avoiding the influence of inaccurate amount of light entering on the imaging quality.

[0167] It should be noted that the fixed component 104 provided in the embodiment of the present application is the first component 10 provided in the above-mentioned embodiment, and the rotating component 103 provided in the embodiment of the present application is the second component 20 provided in the above-mentioned embodiment. The structures, connection relationships, extension explanations and beneficial effects of other components of the imaging device provided in the embodiment of the present application can be referred to the above-mentioned embodiments, and will not be described herein.

[0168] As shown in FIG. 14, the embodiment of the present application also proposes a photographing device, the proposed photographing device comprises a lens assembly 200, and the aperture device is located inside the lens assembly 200 or at one side of the lens assembly 200. In some embodiments, the lens assembly 200 comprises a first lens group 210, a second lens group 220 and the above-mentioned aperture device 100, and the aperture assembly is located between the first lens group 210 and the second lens group 220. Of course, the aperture device 100 is not limited to be arranged between the first lens group 210 and the second lens group 220, and in other embodiments, the aperture device 100 can also be arranged at the object side of the entire lens assembly, which can be determined according to actual design needs.

[0169] The photographing device proposed in the embodiment has the advantages that the light quantity of the aperture device 100 is not affected by vibration or impact of the photographing device, and the imaging quality of the photographing device can be improved, because the aperture device 100 is used.

[0170] The structure, connection relationship, extension description and beneficial effects of other components of the photographing device proposed in the embodiment can be referred to the above-mentioned embodiments, which will not be described here.

[0171] The embodiment of the present application also proposes a sports camera, the proposed sports camera comprises a lens assembly 200, and the lens assembly 200 uses the above-mentioned aperture device 100. When the sports camera vibrates, the relative distance of the first component 10 and the second component 20 of the aperture device 100 in the radial direction is unchanged.

[0172] The sports camera proposed in the embodiment has the advantages that the light quantity of the aperture device 100 is not affected by vibration or impact of the photographing device, and the imaging quality of the sports camera can be improved, because the aperture device 100 is used.

[0173] The structure, connection relationship, extension description and beneficial effects of other components of the sports camera proposed in the embodiment can be referred to the above-mentioned embodiments, which will not be described here.

[0174] The embodiment of the present application also proposes a movable object, the proposed movable object comprises a power unit for providing power for moving the movable object, and a lens assembly 200, and the lens assembly 200 uses the above-mentioned aperture device 100. When the movable object vibrates, the relative distance of the first component 10 and the second component 20 of the aperture device 100 in the radial direction is unchanged.

[0175] The movable object proposed in the embodiment has the advantages that the light quantity of the aperture device 100 is not affected by vibration or impact of the photographing device, and the imaging quality of the movable object can be improved, because the aperture device 100 is used.

[0176] The above description is provided as an enabling teaching of the application and is not intended to limit its scope in any way. Any modification of the application in keeping with the spirit thereof that is apparent to those skilled in the art is to be considered within the scope of the application as defined by the appended claims.

Claims

An aperture device characterized by The application relates to a rotating device, comprising: a first component in a ring shape; a second component in a ring shape, the axis of the first component and the second component is coaxial with the optical axis of the aperture device, and the first component and the second component can rotate relative to each other, the second component is provided with a plurality of abutting parts distributed along the circumferential direction; and a plurality of rolling parts distributed along the circumferential direction of the second component, the plurality of rolling parts are clamped between the first component and the abutting parts; wherein the plurality of abutting parts correspond to the plurality of rolling parts one by one, at least one of the plurality of abutting parts comprises an abutting surface which is arranged obliquely relative to the optical axis direction, and when the first component and the second component rotate relative to each other, the rolling parts can always abut against the abutting surface. An aperture device characterized by The application relates to a rotating device, comprising: a rotating component in a ring shape; a fixed component in a ring shape, which is arranged on the circumferential outside of the rotating component, the rotating component and the fixed component can rotate relative to each other, the rotating component is provided with at least three abutting parts distributed along the circumferential direction; and at least three rolling parts distributed along the circumferential direction of the rotating component and clamped between the at least three abutting parts of the rotating component and the fixed component, the at least three rolling parts have the same specifications; wherein the at least three abutting parts correspond to the at least three rolling parts one by one, the at least three abutting parts comprise an abutting surface which is arranged non-rotationally symmetrically relative to the rotating axis parallel to the optical axis direction, and when the rotating component and the fixed component rotate relative to each other, the rolling parts can always abut against the abutting surface. The aperture device of claim 1, wherein The plurality of abutting parts comprises at least three abutting parts. The iris device as claimed in claim 2 or 3, characterized in that At least one of the at least three abutting parts has the abutting surface arranged obliquely relative to the optical axis direction, so that the rolling parts in contact with the abutting surface are subjected to a force generated along the radial direction. The iris device as claimed in claim 2 or 3, characterized in that The at least three abutting parts comprise a first abutting part, a second abutting part and a third abutting part, and at least one of the first abutting part, the second abutting part and the third abutting part has the abutting surface arranged obliquely relative to the optical axis direction. At least two of the first abutting part, the second abutting part and the third abutting part have the abutting surface arranged obliquely relative to the optical axis direction. The aperture device of claim 5, wherein The inclinations of the plurality of abutting surfaces arranged obliquely relative to the optical axis direction are consistent or are arranged rotationally symmetrically relative to the optical axis. The iris device as claimed in claim 6, characterized in that The first abutting part, the second abutting part and the third abutting part all comprise the abutting surface arranged obliquely relative to the optical axis direction, and the inclinations of the abutting surfaces corresponding to the first abutting part, the second abutting part and the third abutting part relative to the optical axis direction are different from each other. The aperture device of claim 5, wherein The absolute value of the inclination of the abutting surface corresponding to the first abutting part arranged obliquely relative to the optical axis direction is greater than the absolute value of the inclination of the abutting surface corresponding to the second abutting part or the third abutting part arranged obliquely relative to the optical axis direction. The aperture device of claim 8, wherein ​ The aperture device of claim 5, wherein The first abutting part, the second abutting part and the third abutting part each have the abutting surface arranged obliquely to the optical axis direction, and the abutting surfaces of the first abutting part, the second abutting part and the third abutting part corresponding to the abutting surfaces arranged obliquely to the optical axis direction are arranged non-rotationally symmetrically relative to the optical axis direction. The aperture device of claim 1, wherein The abutting surface arranged obliquely to the optical axis direction has an inclination relative to the optical axis direction with an absolute value of 0° to 90°. The aperture device of claim 11, wherein The abutting surface arranged obliquely to the optical axis direction has an angle relative to the radial direction of the aperture device with an absolute value of 45° to 60°. The iris device as claimed in claim 1 or 2, characterized in that The plurality of abutting parts are connected to form a ring structure. The iris device as claimed in claim 1 or 2, characterized in that The plurality of abutting parts are three, including a first abutting part, a second abutting part and a third abutting part, the first abutting part includes a first abutting surface, the second abutting part includes a second abutting surface, and the third abutting part includes a third abutting surface. The aperture device of claim 14, wherein The first abutting surface, the second abutting surface and the third abutting surface cooperate with the corresponding rolling elements, so that at least one of the rolling elements is subjected to a force generated in the radial direction. The aperture device of claim 15, wherein The first abutting surface is an abutting surface arranged obliquely to the optical axis direction, and the second abutting surface and the third abutting surface are non-inclined surfaces parallel to the optical axis direction. The aperture device of claim 16, wherein The first abutting surface is an inclined surface arranged obliquely to the optical axis direction, and is used to cooperate with the rolling elements to generate a component force in the radial direction based on the driving force in the optical axis direction, and the first component force and the second component force of the component force are used to abut the second abutting surface and the third abutting surface against the corresponding rolling elements. The aperture device of claim 15, wherein The first abutting surface and the second abutting surface are abutting surfaces arranged obliquely to the optical axis direction, and the third abutting surface is a non-inclined surface. The aperture device of claim 18, wherein The first abutting surface and the second abutting surface are inclined surfaces arranged obliquely to the optical axis direction, and cooperate with the corresponding rolling elements to generate a first component force and a second component force in the radial direction based on the vertical driving force applied to the second component in the optical axis direction, and the resultant force of the first component force and the second component force is used to abut the third abutting surface against the corresponding rolling elements. The aperture device as claimed in claim 16 or 18, characterized in that The non-inclined surface is a curved surface arranged parallel to the optical axis direction. The aperture device of claim 18, wherein The non-inclined surface is arranged parallel to the optical axis direction. The aperture device of claim 15, wherein The first abutting surface, the second abutting surface and the third abutting surface are all abutting surfaces arranged obliquely to the optical axis direction, and at least two of the inclinations of the first abutting surface, the second abutting surface and the third abutting surface are different. The aperture device of claim 22, wherein The inclinations of the inclined surfaces of the first abutting surface, the second abutting surface and the third abutting surface are all different, the first abutting surface, the second abutting surface and the third abutting surface cooperate with the corresponding rolling elements to generate a first component force, a second component force and a third component force in the radial direction, and the first component force, the second component force and the third component force are all non-zero, so that the first component and the second component clamp the rolling elements in the radial direction, or the first component and the second component are attracted to each other in the radial direction, or the relative distance between the first component and the second component in the radial direction remains unchanged. The aperture device as claimed in claim 1 or 2, characterized in that At least one of the plurality of abutting portions further comprises an abutting surface arranged parallel to the optical axis direction, and the second component further comprises a transmission portion for transmitting a vertical driving force applied to the second component in a direction parallel to the optical axis direction to a rolling member corresponding to the abutting surface arranged parallel to the optical axis direction. The aperture device of claim 24, wherein The transmission portion is arranged adjacent to the abutting portion. The aperture device of claim 24, wherein The transmission portion cooperates with the rolling member corresponding to the abutting surface arranged parallel to the optical axis direction, and the abutting portion cooperates with the rolling member to enable the first component and the second component to be attracted to each other in a radial direction and in the optical axis direction, or the relative distance between the first component and the second component in the radial direction and in the optical axis direction remains unchanged. The aperture device of claim 1, wherein A preset gap exists between the first component and the second component. The aperture device of claim 27, wherein The preset gap between the first component and the second component remains unchanged during operation of the aperture device. The aperture device of claim 28, wherein The first component and the second component are attracted to each other during operation of the aperture device, or the relative distance between the first component and the second component in the radial direction remains unchanged during operation of the aperture device. The aperture device of claim 27, wherein The first component and the second component rotate relative to each other through the cooperation of the abutting portion and the rolling member to achieve rolling friction or low dynamic friction or low load fluctuation during operation of the aperture device. The aperture device of claim 1, wherein The first component is a fixed component for cooperating with the second component to generate a vertical driving force for driving the second component to move. The aperture device of claim 31, wherein The fixed component is a fixed ring for cooperating with the second component to generate a rotational driving force for driving the second component to rotate. The aperture device of claim 1, wherein The second component is a rotating component for driving a plurality of vane assemblies of the aperture device to move to control the light transmission amount of the aperture device. The aperture device of claim 33, wherein The rotating component is a rotating ring for driving the vane assemblies to rotate to adjust the size of a light transmission hole formed by the plurality of vane assemblies to control the light transmission amount of the aperture device. The iris device as claimed in claim 1 or 2, characterized in that The rolling member is used to provide rolling friction. The aperture device of claim 35, wherein The rolling member comprises a rolling body having a rotational symmetry shape. The aperture device of claim 36, wherein The rolling body comprises a ball. The aperture device as claimed in claim 1 or 2, characterized in that The plurality of rolling members have the same specifications. The aperture device of claim 38, wherein The specifications include shape and friction coefficient. The aperture device of claim 38, wherein The specifications include at least one of shape, size, and friction coefficient. The iris device as claimed in claim 1 or 2, characterized in that The outer surface of the plurality of rolling members is provided with a lubricating medium. The iris device as claimed in claim 1 or 2, characterized in that The plurality of rolling members comprises at least three rolling members. The iris device as claimed in claim 1 or 2, characterized in that The aperture device further comprises a driving assembly for generating the vertical driving force applied to the second component in the optical axis direction and / or generating a rotational driving force for enabling the second component to rotate relative to the first component about the optical axis. The aperture device of claim 43, wherein The rotational driving force and / or the vertical driving force is a non-contact force or a non-load fluctuation force. The aperture device of claim 44, wherein The rotational driving force and / or the vertical driving force is at least one of a field force or a nuclear force. The aperture device of claim 44, wherein The rotational driving force and / or the vertical driving force is a magnetic force. The aperture device of claim 43, wherein The driving assembly comprises a first driving member and a second driving member, the first driving member is arranged on the first component, the second driving member is arranged on the second component, and the first driving member and the second driving member cooperate to generate the vertical driving force applied to the second component along the optical axis direction. The aperture device of claim 47, wherein The first driving member and the second driving member are arranged in a manner that one of them is a permanent magnet and the other is a matching member attracted to the permanent magnet. The matching member is in a shape of a ring. The aperture device of claim 48, wherein The permanent magnet comprises a magnet, and the matching member comprises a magnet matching member capable of generating a relative force with the magnet. The aperture device of claim 48, wherein The second driving member comprises a plurality of permanent magnets arranged on the second component in a spaced manner, and the first driving member comprises a matching member arranged on the first component for being attracted to the permanent magnets, the matching member is arranged perpendicularly to the optical axis direction and is arranged opposite to the plurality of permanent magnets along the optical axis direction. The aperture device of claim 47, wherein The first driving member comprises a plurality of permanent magnets arranged on the first component in a spaced manner, and the second driving member comprises a matching member arranged on the second component for being attracted to the permanent magnets. The aperture device of claim 47, wherein The matching member is arranged in a manner that it is inclined relative to the optical axis direction, and the permanent magnets are arranged opposite to the matching member in a radial direction. The aperture device of claim 52, wherein The permanent magnet and the matching member are arranged in a manner that they are inclined relative to the optical axis direction, and the permanent magnet is arranged opposite to the matching member. The aperture device of claim 52, wherein The driving assembly comprises a first driving member and a third driving member, the first driving member is arranged on the first component, the third driving member is arranged on the second component, and the first driving member and the third driving member cooperate to generate the rotating driving force for relatively rotating the first component and the second component along the optical axis direction. The aperture device of claim 43, wherein The first driving member is a permanent magnet, and the third driving member is an electromagnet. The aperture device of claim 55, wherein The electromagnet comprises a coil. The aperture device of claim 56, wherein The driving assembly comprises a fourth driving member for driving the second component to rotate around the optical axis direction. The aperture device of claim 43, wherein The second component is provided with a driving part or a driving part connected to the second component, and the driving part is used for cooperating with the blade assembly to control the light passing amount of the aperture device. The aperture device of claim 58, wherein The fourth driving member is an electric motor. The aperture device of claim 58, wherein The aperture device further comprises a transmission assembly, and the fourth driving member is connected to the second component through the transmission assembly to drive the second component to rotate. The aperture device of claim 58, wherein The transmission assembly comprises at least one of a gear assembly, a belt pulley assembly, and a connecting rod assembly. The aperture device of claim 61, wherein The aperture device further comprises a position sensor arranged on the first component or / and the second component for sensing the relative position change of the first component and the second component. The aperture device of claim 1, wherein The position sensor comprises at least one of a magnetoresistance effect sensor, a passive infrared sensor, and a Hall sensor. The aperture device of claim 63, wherein ​ The aperture device of claim 63, wherein The aperture device further comprises a first driving member for driving the first component and the second component to rotate relative to each other, the position sensor is arranged on the second component and the first driving member, and the other is arranged on the first component, the position sensor is used for determining the relative position change of the first component and the second component or sensing the rotating speed of the first component by sensing the displacement of at least one component of the first driving member. The aperture device of claim 65, wherein The first driving member comprises a plurality of magnetic force members, which are arranged on the first component or the second component in a circumferential direction, and the position sensor comprises a Hall sensor. The aperture device of claim 66, wherein Each group of magnetic force members comprises one or more permanent magnets. The aperture device of claim 65, wherein When the position sensor is arranged on the second component, the position sensor is connected by a soft electrical connector. The aperture device of claim 68, wherein The electrical connector comprises a suspension wire or an etched spring. The aperture device of claim 65, wherein When the position sensor is arranged on the first component, the position sensor is arranged on the radially inner side of the first component, and the first driving member is arranged on the radially outer side of the second component. The aperture device of claim 70, wherein The inner side of the first component is provided with a groove extending in the radial direction for mounting the position sensor. The aperture device of claim 65, wherein The field strength of the first driving member is greater than a preset multiple of the minimum threshold of the field strength sensed by the position sensor. The aperture device of claim 72, wherein The preset multiple is 1-2 times. The aperture device of claim 72, wherein The position sensor comprises a Hall sensor, and the first driving member can generate a magnetic field. The aperture device of claim 1, wherein The aperture device further comprises a blade support, a driving part, and a plurality of blade assemblies, the plurality of blade assemblies are arranged around the optical axis direction, one side of each of the plurality of blade assemblies is connected with the blade support, the plurality of blade assemblies comprise a guide part, the driving part is arranged corresponding to the guide part of the plurality of blade assemblies and is connected with the second component, and is used for driving the second component to rotate around the optical axis relative to the first component to drive the driving part to rotate around the optical axis, so that the other side of the plurality of blade assemblies collectively forms a size-adjustable light passing hole. The aperture device of claim 75, wherein The aperture device further comprises an elastic assembly connected with the blade support, the elastic assembly comprises a plurality of elastic members, and at least part of the plurality of elastic members are integrally formed, the elastic assembly is used for abutting and cooperating with the plurality of blade assemblies, so that the edges of the guide part abut against the driving part of the driving assembly through the elastic force of the elastic members. The aperture device of claim 76, wherein The blade support comprises a support plate, and at least part of the plurality of elastic members are integrally formed with the support plate. The aperture device of claim 76, wherein The blade support comprises a bottom plate and / or a back plate, and at least part of the plurality of elastic members are integrally formed with the bottom plate or the back plate. The aperture device of claim 76, wherein The elastic assembly further comprises a main body, and at least part of the plurality of elastic members are integrally formed with the main body. The aperture device of claim 76, wherein The elastic member is a planar sheet structure and is arranged perpendicular to the optical axis direction. The aperture device of claim 76, wherein The elastic member is integrally formed by etching. The aperture device of claim 75, wherein The aperture device further comprises an elastic assembly connected with the blade support, the elastic assembly comprises a plurality of elastic members and a plurality of limiting portions corresponding to the plurality of elastic members, the plurality of blade assemblies comprise limiting fitting portions, the limiting portions are in abutting fitting with the limiting fitting portions, so that the edges of the guide portions of the blade assemblies abut against the driving portions of the driving assembly through the elastic force of the elastic members. One side of each of the blade assemblies is rotatably connected with the blade support. The aperture device of claim 75, wherein The aperture device further comprises an elastic assembly, the elastic assembly comprises a plurality of sets of elastic limiting portions and a main body connected with the plurality of sets of elastic limiting portions, the plurality of sets of elastic limiting portions are integrally formed with the main body. The aperture device of claim 75, wherein The elastic limiting portion comprises an elastic member and a limiting portion, the elastic member comprises a connecting end, a stress adjusting portion and a fitting end, wherein the connecting end is used for fixedly connecting one end of the elastic member with the blade support, the stress adjusting portion is used for connecting the connecting end and the fitting end to reduce the stress of the connecting end and the fitting end, and the fitting end is used for connecting the limiting portion so that the elastic member applies elastic force to the edges of the guide portions of the blade assemblies through the limiting portion. The aperture device of claim 84, wherein Each of the blade assemblies further comprises a pivoting portion and a limiting fitting portion, the blade assembly is rotatably connected with the first component or the blade support through the pivoting portion, and the limiting fitting portion is located between the pivoting portion and the guide portion in the radial direction of the aperture device. The aperture device of claim 75, wherein Each of the blade assemblies further comprises a pivoting portion and a limiting fitting portion, the blade assembly is rotatably connected with the first component or the blade support through the pivoting portion, and the limiting fitting portions and the guide portions of the plurality of blade assemblies are spaced apart and arranged in the direction around the optical axis direction, and the pivoting portion is located outside the limiting fitting portion and the guide portion. The aperture device of claim 75, wherein Comprise: An aperture device characterized by A fixed ring; A rotating ring, the rotating ring is at least partially arranged in the surrounding space of the fixed ring, and the rotating ring is rotatable relative to the fixed ring; And At least three rolling members, which are clamped between the fixed ring and the rotating ring and are spaced apart and arranged around the optical axis direction; Wherein, the rotating ring is provided with at least three abutting portions, the at least three abutting portions correspond to the at least three rolling members one by one, at least one of the abutting portions comprises a first abutting surface abutting with the rolling member, at least one of the abutting portions comprises a second abutting surface abutting with the rolling member, the first abutting surface is arranged obliquely relative to the optical axis direction, and the second abutting surface is arranged parallel to the optical axis direction; The first abutting surface cooperates with the corresponding rolling member to generate a component force perpendicular to the optical axis direction through the driving force applied to the rotating ring along the optical axis direction. Comprise: A lens assembly and the aperture device of any one of claims 1 to 88, the aperture assembly is located inside the lens assembly or on one side of the lens assembly. A photographing apparatus characterized by comprising: Comprise: The lens assembly comprises a first lens group and a second lens group, and the aperture assembly is located between the first lens group and the second lens group. The aperture device of claim 89, wherein Comprise: ​ A sports camera characterized by ​ A lens assembly employing the aperture device of any one of claims 1 to 88. The action camera as claimed in claim 91, wherein, The relative distance between the first component and the second component of the aperture device in the radial direction is constant when the motion camera is subjected to vibration. A movable object, comprising: Comprising: a power unit for providing power for the movable object to move, and A lens assembly employing the aperture device of any one of claims 1 to 88. The action camera as claimed in claim 93, wherein, The relative distance between the first component and the second component of the aperture device in the radial direction is constant when the motion camera is subjected to vibration.

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