US-12621551-B2 - Variable aperture, camera module, and electronic device

US12621551B2US 12621551 B2US12621551 B2US 12621551B2US-12621551-B2

Abstract

The present disclosure provides a variable aperture, camera module, and electronic device, belonging to the field of electronic technology. The variable aperture includes: a first base member, a driving member, and at least one shading blade; The first base member includes an aperture hole, at least one shading blade is rotatably connected to the first base member, and the driving member is movably connected to at least one shading blade; The variable aperture is configured so that when the driving member moves relative to the first base member, the driving member drives at least one shading blade to rotate relative to the first base member, causing at least a portion of the shading blade to enter or exit the aperture hole, changing the effective light entrance area of the aperture hole.

Inventors

Xinjie LIU

Assignees

BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20230927
Priority Date: 20230627

Claims (15)

1 . A variable aperture, comprising: a first base member, a driving member, and at least one shading blade; wherein the first base member comprises an aperture hole, the at least one shading blade is rotatably connected to the first base member, and the driving member is movably connected to the at least one shading blade; and wherein the variable aperture is configured that, in response to that the driving member moves relative to the first base member, the driving member drives the at least one shading blade to rotate relative to the first base member, thereby causing at least a portion of the at least one shading blade to enter or exit the aperture hole, thereby changing an effective light entrance area of the aperture hole, wherein the shading blade comprises a first shading blade and a second shading blade; wherein the first shading blade and the second shading blade are respectively rotatably connected to the first base member, and the first shading blade and the second shading blade are located at different positions on a circumference of the aperture hole; wherein the first shading blade and the second shading blade are respectively movably connected to the driving member, wherein the driving member drives the first shading blade and the second shading blade to rotate relative to the first base member respectively, thereby causing at least portions of the first shading blade and the second shading blade to synchronously enter or exit the aperture hole; wherein the first shading blade comprises a first concave part on a first side facing an axis of the aperture hole, and the second shading blade comprises a second concave part on a second side facing the axis of the aperture hole; wherein the first concave part and the second concave part are positioned in corresponding alignment, in response to that the first shading blade and the second shading blade synchronously enter the aperture hole, the first concave part and the second concave part are seamlessly connected, wherein a first space enclosed by the first concave part and the second concave part forms a first target aperture; wherein the first shading blade comprises a first blade hinge part and a first blade guide part, and the second shading blade comprises a second blade hinge part and a second blade guide part; the first base member comprises an aperture hinge part on the circumference of the aperture hole, and the driving member comprises an aperture guide part; wherein the first blade hinge part and the second blade hinge part are respectively rotatably connected to the aperture hinge part, and the first blade guide part and the second blade guide part are respectively movably connected to the aperture guide part; in response to that the driving member moves relative to the first base member, the aperture guide part drives the first shading blade and the second shading blade to respectively rotate in opposite directions around the aperture hinge part.
2 . The variable aperture according to claim 1 , wherein the variable aperture further comprises at least one of followings: the first blade hinge part and the second blade hinge part are hinge holes and the aperture hinge part is a hinge shaft; or one of the first blade hinge part and the second blade hinge part is a hinge shaft and the other one of the first blade hinge part and the second blade hinge part is a hinge hole, and the aperture hinge part is a hinge hole, wherein rotation axes of the first blade hinge part, the second blade hinge part and the aperture hinge part are parallel to an axis of the aperture hole, thereby causing the first shading blade and the second shading blade to rotate in a plane perpendicular to the axis of the aperture hole; or the first blade guide part and the second blade guide part are guide grooves and the aperture guide part is a guide protrusion; or the first blade guide part and the second blade guide part are guide protrusions and the aperture guide part is a guide groove.
3 . The variable aperture according to claim 1 , wherein the first shading blade further comprises a third concave party on an inner side of the first concave part, and the second shading blade further comprises a fourth concave part on an inner side of the second concave part; wherein the third concave part and the fourth concave part are positioned in corresponding alignment, in response to that the first shading blade and the second shading blade synchronously enter the aperture hole, the third concave part and the fourth concave part are seamlessly connected, wherein a second space enclosed by the third concave part and the fourth concave part forms a first target aperture.
4 . The variable aperture according to claim 1 , wherein the driving member comprises a rotary joint and an actuation joint; wherein the rotary joint comprises an annular structure, wherein the rotary joint is connected to the first base member, and the at least one shading blade is movably connected to the rotary joint; an axis of the rotary joint coincides with an axis of the aperture hole, thereby causing the rotary joint to rotate around the axis of the aperture hole relative to the first base member; the actuation joint is connected to the rotary joint, wherein the actuation joint is configured to provide a rotational torque to the rotary joint.
5 . The variable aperture according to claim 4 , wherein the first base member comprises an inward concave annular step on a circumference of the aperture hole, wherein the rotary joint is positioned on the annular step.
6 . The variable aperture according to claim 5 , further comprising: at least three balls positioned between the annular step and the rotary joint, wherein the at least three balls are configured to facilitate rotational movement between the rotary joint and the first base member through a rolling friction mechanism.
7 . The variable aperture according to claim 5 , wherein the first base member further comprises an avoidance opening, wherein the avoidance opening is communicated with the annular step, and the actuation joint extends to an outer side of the first base member through the avoidance opening; wherein a size of the avoidance opening is larger than a size of the actuation joint, thereby causing the actuation joint to rotate within the avoidance opening.
8 . The variable aperture according to claim 4 , wherein the variable aperture further comprises a first driving component, wherein the first driving component comprises a first magnet group and a first coil group; wherein the actuation joint is connected to the first magnet group or the first coil group, and magnetic fields of the first magnet group and the first coil group are magnetically interconnected.
9 . The variable aperture according to claim 1 , wherein the variable aperture further comprises a housing comprising an avoidance hole for light to pass though, wherein the housing and the first base member are axially connected along the aperture hole, the driving member and the at least one shading blade are positioned within the housing.
10 . A camera module, comprising: an optical lens; a photosensitive component comprising a circuit board and a photosensitive element, wherein the photosensitive element is electrically connected to the circuit board, and the optical lens is positioned on a photosensitive path of the photosensitive element; and a variable aperture positioned on a light entrance path of the optical lens, comprising: a first base member, a driving member, and at least one shading blade; wherein the first base member comprises an aperture hole, the at least one shading blade is rotatably connected to the first base member, and the driving member is movably connected to the at least one shading blade; and wherein the variable aperture is configured that, in response to that the driving member moves relative to the first base member, the driving member drives the at least one shading blade to rotate relative to the first base member, thereby causing at least a portion of the at least one shading blade to enter or exit the aperture hole, thereby changing an effective light entrance area of the aperture hole, wherein the shading blade comprises a first shading blade and a second shading blade; wherein the first shading blade and the second shading blade are respectively rotatably connected to the first base member, and the first shading blade and the second shading blade are located at different positions on a circumference of the aperture hole; wherein the first shading blade and the second shading blade are respectively movably connected to the driving member, wherein the driving member drives the first shading blade and the second shading blade to rotate relative to the first base member respectively, thereby causing at least portions of the first shading blade and the second shading blade to synchronously enter or exit the aperture hole; wherein the first shading blade comprises a first concave part on a first side facing an axis of the aperture hole, and the second shading blade comprises a second concave part on a second side facing the axis of the aperture hole; wherein the first concave part and the second concave part are positioned in corresponding alignment, in response to that the first shading blade and the second shading blade synchronously enter the aperture hole, the first concave part and the second concave part are seamlessly connected, wherein a first space enclosed by the first concave part and the second concave part forms a first target aperture; wherein the first shading blade comprises a first blade hinge part and a first blade guide part, and the second shading blade comprises a second blade hinge part and a second blade guide part; the first base member comprises an aperture hinge part on the circumference of the aperture hole, and the driving member comprises an aperture guide part; wherein the first blade hinge part and the second blade hinge part are respectively rotatably connected to the aperture hinge part, and the first blade guide part and the second blade guide part are respectively movably connected to the aperture guide part; in response to that the driving member moves relative to the first base member, the aperture guide part drives the first shading blade and the second shading blade to respectively rotate in opposite directions around the aperture hinge part.
11 . The camera module according to claim 10 , wherein the camera module further comprises: a second base member, a zoom device, and an anti-shake device; wherein the optical lens is supported on the second base member through the zoom device and the anti-shake device.
12 . The camera module according to claim 11 , wherein the driving member comprises a rotary joint and an actuation joint; the variable aperture further comprises a first driving component, and the first driving component comprises a first magnet group and a first coil group; wherein an end of the actuation joint extends to the second base member, one of the first magnet group and the first coil group is positioned on the second base member, and the other one of the first magnet group and the first coil group is positioned on the actuation joint.
13 . The camera module according to claim 11 , wherein the zoom device comprises a first support member and a second driving component; wherein the optical lens is positioned on the first support member, the first support member is movably connected to the second base member, thereby causing the first support member to move along an axial direction of the optical lens; wherein the second driving component comprises a second magnet group and a second coil group with magnetic fields magnetically interconnected, wherein the second magnet group is positioned on one of the first support member and the second base member, and the second coil group is positioned on the other one of the first support member and the second base member.
14 . The camera module according to claim 13 , wherein the anti-shake device comprises a second support member, a third driving component, and a fourth driving component; wherein the optical lens is positioned on the second support member, the second support member is movably connected to the first support member, and the second support member moves in a direction perpendicular to an axis of the optical lens; wherein the third driving component comprises a third magnet group and a third coil group with magnetic fields magnetically interconnected; wherein the third magnet group is positioned on one of the second support member and the first support member, and the third coil group is positioned on the other one of the second support member and the first support member; or, the third magnet group is positioned on one of the second support member and the second base member, and the third coil group is positioned on the other one of the second support member and the second base member; wherein the fourth driving component comprises a fourth magnet group and a fourth coil group with magnetic fields magnetically interconnected; wherein the fourth magnet group is positioned on one of the second support member and the first support member, and the fourth coil group is positioned on the other one of the second support member and the first support member; or, the fourth magnet group is positioned on one of the second support member and the second base member, and the fourth coil group is positioned on the other one of the second support member and the second base member.
15 . An electronic device, comprising a variable aperture, wherein the variable aperture comprises: a first base member, a driving member, and at least one shading blade; wherein the first base member comprises an aperture hole, the at least one shading blade is rotatably connected to the first base member, and the driving member is movably connected to the at least one shading blade; and wherein the variable aperture is configured that, in response to that the driving member moves relative to the first base member, the driving member drives the at least one shading blade to rotate relative to the first base member, thereby causing at least a portion of the at least one shading blade to enter or exit the aperture hole, thereby changing an effective light entrance area of the aperture hole, wherein the shading blade comprises a first shading blade and a second shading blade; wherein the first shading blade and the second shading blade are respectively rotatably connected to the first base member, and the first shading blade and the second shading blade are located at different positions on a circumference of the aperture hole; wherein the first shading blade and the second shading blade are respectively movably connected to the driving member, wherein the driving member drives the first shading blade and the second shading blade to rotate relative to the first base member respectively, thereby causing at least portions of the first shading blade and the second shading blade to synchronously enter or exit the aperture hole; wherein the first shading blade comprises a first concave part on a first side facing an axis of the aperture hole, and the second shading blade comprises a second concave part on a second side facing the axis of the aperture hole; wherein the first concave part and the second concave part are positioned in corresponding alignment, in response to that the first shading blade and the second shading blade synchronously enter the aperture hole, the first concave part and the second concave part are seamlessly connected, wherein a first space enclosed by the first concave part and the second concave part forms a first target aperture; wherein the first shading blade comprises a first blade hinge part and a first blade guide part, and the second shading blade comprises a second blade hinge part and a second blade guide part; the first base member comprises an aperture hinge part on the circumference of the aperture hole, and the driving member comprises an aperture guide part; wherein the first blade hinge part and the second blade hinge part are respectively rotatably connected to the aperture hinge part, and the first blade guide part and the second blade guide part are respectively movably connected to the aperture guide part; in response to that the driving member moves relative to the first base member, the aperture guide part drives the first shading blade and the second shading blade to respectively rotate in opposite directions around the aperture hinge part.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present application is based upon and claims the benefit of priority to Chinese Patent Application No. 202310765603X, filed on Jun. 27, 2023, the entire contents of which are incorporated herein by reference for all purposes. BACKGROUND Currently, electronic devices such as mobile phones, tablets, and personal computers (PCs) require constant shooting quality under various brightness conditions. To achieve this goal, a variable aperture (VA) can be set on the light entrance side of the optical lens within the camera module. The size of the aperture hole of the variable aperture is variable. In high brightness environments, the size of the aperture hole can be reduced to allow a relatively small amount of light to enter the optical lens. In low brightness environments, the size of the aperture hole can be enlarged to allow a relatively large amount of light to enter the optical lens. Therefore, the adjustment of the light input of the optical lens is realized, and the shooting quality is guaranteed. SUMMARY The present disclosure relates to the field of electronic technology, in particular, to a variable aperture, a camera module, and an electronic device. In order to overcome the problems existing in the related technologies, the present disclosure provides a variable aperture, a camera module, and an electronic device. According to a first aspect of the present disclosure, there is provided a variable aperture, including: a first base member, a driving member, and at least one shading blade; the first base member includes an aperture hole, the at least one shading blade is rotatably connected to the first base member, and the driving member is movably connected to the at least one shading blade;the variable aperture is configured that, in response to that the driving member moves relative to the first base member, the driving member drives the at least one shading blade to rotate relative to the first base member, so that at least a portion of the at least one shading blade enters or exits the aperture hole, changing an effective light entrance area of the aperture hole. According to a second aspect of the present disclosure, there is provided a camera module, including: an optical lens;a photosensitive component including a circuit board and a photosensitive element, where the photosensitive element is electrically connected to the circuit board, and the optical lens is located on a photosensitive path of the photosensitive element; andthe variable aperture according to the present disclosure, where the variable aperture is located on a light entrance path of the optical lens. According to a third aspect of the present disclosure, there is provided an electronic device, including the variable aperture in the first aspect or any embodiment of the first aspect described above, or the camera module in the second aspect of any embodiment of the second aspect described above. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS The accompany drawings, which are incorporated in and constitute a part of the description, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure. FIG. 1 is a schematic diagram of a structure of a variable aperture according to an embodiment of the present disclosure; FIG. 2 is an exploded view of the structure of the variable aperture according to an embodiment of the present disclosure; FIG. 3 is a schematic diagram of the structure of the variable aperture according to an embodiment of the present disclosure; FIG. 4 is an exploded view of the structure of the variable aperture according to an embodiment of the present disclosure; FIG. 5 is a structural schematic diagram of the variable aperture according to an embodiment of the present disclosure forming a first target aperture; FIG. 6 is a structural schematic diagram of the variable aperture according to an embodiment of the present disclosure forming a second target aperture; FIG. 7 is a schematic diagram of the structure of the variable aperture according to an embodiment of the present disclosure; FIG. 8 is a schematic diagram of the structure of the variable aperture according to an embodiment of the present disclosure; FIG. 9 is an exploded view of the structure of the variable aperture according to an embodiment of the present disclosure; FIG. 10 is a structural schematic diagram of a camera module according to an embodiment of the present disclosure; FIG. 11 is an exploded view of the structure of the camera module according to an embodiment of the present disclosure; FIG. 12 is a structural schematic diagram of the camera module according to an embodiment of the present disclosure; FIG. 13 is a schematic diagram