CN113467074B

CN113467074B - Light polarization angle adjusting device, camera module and electronic equipment

Info

Publication number: CN113467074B
Application number: CN202110739285.0A
Authority: CN
Inventors: 杨承修; 林立恒; 游琮伟
Original assignee: Jiangxi Jinghao Optical Co Ltd
Current assignee: Jiangxi Jinghao Optical Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2023-04-04
Anticipated expiration: 2041-06-30
Also published as: CN113467074A

Abstract

The invention relates to a light polarization angle adjusting device, comprising: a support; a carrier mechanism; a linkage mechanism; the driving mechanism comprises a driving shaft which is rotatably arranged on the bracket and a transmission unit connected with the driving shaft, and the driving shaft is arranged on the bracket in a back-and-forth movement mode along the axial direction of the driving shaft so as to drive the transmission unit to move back and forth, so that the transmission unit can be in transmission connection with or disconnected from the linkage mechanism; the reset mechanism comprises a reset piece, and the reset piece is arranged between the linkage mechanism and the bracket or between the carrier mechanism and the bracket. When the polarization effect is not needed, the transmission unit is separated from the linkage mechanism, at the moment, the carrier mechanism drives the polaroid to automatically reset under the action of the reset piece, manual adjustment for resetting is not needed, and the consistency of the position of the polaroid after resetting every time is ensured. Still relate to a camera module and electronic equipment.

Description

Light polarization angle adjusting device, camera module and electronic equipment

Technical Field

The application relates to the technical field of photographic devices, in particular to a light polarization angle adjusting device, a camera module and an electronic device.

Background

In the process of shooting by using the camera module, glare caused by reflection of strong light on the lens and other surfaces can affect the shooting effect. The best effect of the object is usually presented by adding a polarizer in front of the lens and rotating the polarization angle of the light to filter out the glare.

The shooting function of the existing electronic equipment such as the smart phone is more and more powerful. In order to improve the shooting effect, except dazzling light through the mode filtering of external polaroid before the camera lens, inside current polaroid adjusting device added the polaroid into electronic equipment such as smart mobile phone, dazzled light with the filtering through complicated drive mechanism regulation light polarization angle.

In the related art, the knob is disposed on the side of the mobile phone, and the angle of the polarizer can be adjusted by rotating the knob, but the adjusted position is different each time, and if the mobile phone is to return to the non-polarization state, the user needs to search for the corresponding position by himself, which is very inconvenient.

Disclosure of Invention

Therefore, it is necessary to provide a light polarization angle adjusting device to solve the problem that a user needs to find a corresponding position after the polarizer is adjusted. A camera module and an electronic device with the light polarization angle adjusting device are also provided.

A light polarization angle adjusting apparatus for adjusting a polarization angle of incident light at the time of lens photographing, comprising: a support; the carrier mechanism is used for installing a polaroid, is rotatably installed on the bracket and is used for driving the polaroid to cover the object side of the lens; the linkage mechanism is in transmission connection with the carrier mechanism; the driving mechanism comprises a driving shaft rotatably mounted on the bracket and a transmission unit connected with the driving shaft, and the driving shaft is arranged on the bracket in a back-and-forth movement manner along the axial direction of the driving shaft so as to drive the transmission unit to move back and forth, so that the transmission unit can be in transmission connection with or disconnected from the linkage mechanism; the reset mechanism comprises a reset piece, the reset piece is arranged between the linkage mechanism and the supports or between the carrier mechanism and the supports, and the reset piece is used for disconnecting the transmission unit from the linkage mechanism and driving the carrier mechanism to reset when the transmission is connected.

When the light polarization angle adjusting device is used, the driving shaft can drive the transmission unit to move and is connected with the linkage mechanism, then the driving shaft can drive the mounting disc to rotate through the transmission unit and the linkage mechanism when rotating, and the polaroid rotates along with the carrier mechanism to cover the object side of the lens, so that light rays penetrating through the polaroid and entering the lens barrel of the lens have different polarization directions. When the polarization effect is not needed, the transmission unit is separated from the linkage mechanism, at the moment, the carrier mechanism drives the polaroid to automatically reset under the action of the reset piece, the manual adjustment for resetting is not needed, and the consistency of the position of the polaroid after resetting is ensured.

In one embodiment, the carrier mechanism comprises a mounting plate for mounting the polarizer, and the mounting plate is rotatably mounted on the bracket; the linkage mechanism comprises a rotating shaft, a first linkage member and a second linkage member, the first linkage member and the second linkage member are respectively connected with the rotating shaft, and the first linkage member is connected with the mounting disc and is used for driving the mounting disc to rotate; the transmission unit comprises a transmission piece, the transmission piece is fixed on the driving shaft, and the transmission piece is used for being connected with the second linkage piece. The polaroid can cover the object side of the lens when rotating along with the mounting disc, so that light rays which penetrate through the polaroid and enter the lens barrel of the lens have different polarization directions, and the phenomenon of light reflection from other than a target object is eliminated.

In one embodiment, a hub is arranged on the bracket, the hub is provided with a mounting cavity, the rotating shaft is rotatably mounted in the mounting cavity, and the reset piece is arranged between the rotating shaft and the hub. The line concentration seat is used for installing a resetting mechanism, and the resetting mechanism can directly act on the rotating shaft and further be used for driving the installation disc to reset.

In one embodiment, the reset element includes a spring plate located in the mounting cavity, surrounding the rotating shaft for at least one circle and elastically abutting against the inner wall of the mounting cavity, wherein one end of the spring plate is fixed to the rotating shaft, and the other end of the spring plate penetrates out of the mounting cavity and is fixed to the hub. The shell fragment supports at the inner wall of installation cavity elastically, has stored elastic potential energy, and when transmission unit and link gear throw off, the shell fragment can direct action in the pivot, and then is used for driving the mounting disc to reset.

In one embodiment, a clamping groove is formed in the outer surface of the rotating shaft along the radial direction of the rotating shaft, and one end of the elastic sheet is clamped in the clamping groove; or the outer surface of the rotating shaft is provided with a plane section parallel to the axis of the rotating shaft, and one end of the elastic sheet is attached to the plane section. One end of the elastic sheet extends into the clamping groove and is positioned in the clamping groove through elasticity, and other positioning structures are not needed. One end of the elastic sheet is fixed on the plane section in an adhesive mode, and one end of the elastic sheet approximately follows the radial direction of the rotating shaft, so that the elastic sheet can conveniently rotate around the rotating shaft for a plurality of times in the circumferential direction around the axis of the rotating shaft.

In one embodiment, one side of the mounting cavity is further provided with a plurality of arc-shaped grooves which are arranged along the radial direction of the rotating shaft, and two ends of each arc-shaped groove are provided with openings. The setting of arc wall has increased the internal diameter of installation cavity in other words, can adapt to the shell fragment of unidimensional not.

In one embodiment, one side of the transmission member is provided with an elastic member configured to provide an elastic force that causes the transmission member to have a tendency to move toward the second linkage member. When the polarization effect needs to be adjusted, the elastic piece can automatically offset the action of the reset mechanism, and the operation is still labor-saving. When the polarization effect does not need to be adjusted, only the driving shaft still needs to be pulled backwards, and no additional action needs to be added.

In one embodiment, the transmission member is located on a side of the second linkage member away from the mounting disc, a sealing ring is arranged between the driving shaft and the support, the sealing ring is fixed to the support, and the elastic member is arranged between the sealing ring and the transmission member. Through set up the elastic component between sealing washer and driving medium, when needs adjustment polarization effect, the elastic component can offset canceling release mechanical system's effect voluntarily, and the operation is still laborsaving. Meanwhile, the sealing ring plays a role in sealing and can prevent water vapor from invading.

In one embodiment, a sealing ring is arranged between the driving shaft and the bracket, the sealing ring is fixed on the driving shaft, and the sealing ring is in interference fit with the bracket. When the polarization effect is adjusted, the reset force of the reset mechanism acting on the rotating shaft is offset by the friction force between the sealing ring and the inner wall of the groove of the support, so that a user can conveniently adjust the polarization angle without being influenced by the reset mechanism. When the polarization effect does not need to be adjusted, only the driving shaft still needs to be pulled backwards, and no additional action needs to be added.

In one embodiment, the drive member comprises a first bevel and the second linkage member comprises a second bevel, the second bevel engaging the first bevel. The second bevel gear is in meshing transmission with the first bevel gear, so that the driving shaft and the rotating shaft can be arranged to be perpendicular to each other, thereby realizing the reversing in transmission and reducing the volume of the driving mechanism.

In one embodiment, the first linkage member is a gear, the carrier mechanism includes a shaft core, the mounting plate is mounted on the bracket through the shaft core, and a gear portion is disposed on an outer edge of the mounting plate and engaged with the gear. The first linkage piece and the mounting disc are driven in a gear meshing mode, so that the mounting disc can rotate, and then the polarization effect is adjusted.

In one embodiment, the drive mechanism further comprises a knob secured to the drive shaft. Through setting up the knob, can conveniently pull drive shaft and rotatory drive shaft around.

A camera module comprises a light polarization angle adjusting device and a lens, wherein a polaroid is installed on a carrier mechanism, the carrier mechanism is rotatably installed on the object side of the lens, a driving mechanism is used for driving the carrier mechanism to rotate through a linkage mechanism, adjusting the position of the polaroid relative to the lens and further adjusting the polarization angle of incident light which penetrates through the polaroid and enters the lens. The reset mechanism is used for driving the carrier mechanism to reset when the transmission unit is disconnected from the linkage mechanism in the transmission connection, the driving shaft is pushed forwards to adjust the polarization angle, the polarization piece can automatically reset after the driving shaft is pulled backwards, and the operation is simple and easy to operate. Furthermore, when the reset mechanism is reset mechanically, no element such as a coil or a magnet is provided, so that the voice coil motor or the magnetic element in the camera module will not interfere with the reset mechanism.

The electronic equipment is characterized by comprising a light polarization angle adjusting device, a shell and a lens, wherein the shell is provided with a camera hole corresponding to the position of the lens, the lens and the light polarization angle adjusting device are arranged in the shell, the lens is opposite to the camera hole, and a polaroid in a carrier mechanism is positioned between the lens and the camera hole. The driving shaft is pushed forwards to adjust the polarization angle, the polarization piece can be automatically reset after the driving shaft is pulled backwards, and the operation is simple and easy to operate. Furthermore, when the reset mechanism is reset mechanically, no coil or magnet is provided, so that the voice coil motor or magnetic element in the camera module will not interfere with the reset mechanism. When light polarization angle adjusting device was provided with the knob, the knob was located the lateral part of casing, and pulling drive shaft and rotatory drive shaft around can being convenient effectively improve electronic equipment's regulation precision, satisfied the manifold shooting demand of shooter.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a light polarization angle adjusting device according to an embodiment.

Fig. 2 is a plan view of the light polarization angle adjusting device shown in fig. 1.

Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of the light polarization angle adjusting device shown in fig. 2.

Fig. 4 is a schematic view illustrating a structure of the light polarization angle adjusting device shown in fig. 1 when the bracket is hidden.

Fig. 5 is a schematic view illustrating another angle structure of the light polarization angle adjusting device shown in fig. 4.

Fig. 6 is an assembly schematic diagram of the hub, the linkage mechanism and the reset mechanism.

Fig. 7 is a schematic view of the assembly shown in fig. 6, with a first linkage of the schematic linkage omitted.

Fig. 8 is a schematic structural view of the hub.

Fig. 9 is a schematic structural view of the hub shown in fig. 8 at another angle.

Fig. 10 is a schematic structural view of a rotating shaft in the linkage mechanism.

Fig. 11 is a schematic structural view of the elastic piece.

Fig. 12 is a schematic structural diagram of a camera module according to an embodiment.

Fig. 13 is a side view of the camera module shown in fig. 12.

Fig. 14 is a schematic structural diagram of an electronic device according to an embodiment.

The relevant elements in the figures are numbered correspondingly as follows:

100. a light polarization angle adjusting device; 10. a support; 110. a receiving cavity; 120. a groove; 121. a step; 20. a carrier mechanism; 210. mounting a disc; 211. a gear portion; 220. a shaft core; 30. a linkage mechanism; 310. a rotating shaft; 311. a card slot; 312. cutting into a plain noodles; 320. a first linkage member; 330. a second linkage member; 40. a drive mechanism; 410. a drive shaft; 420. a transmission unit; 421. a transmission member; 422. a positioning ring; 430. a knob; 440. a seal ring; 450. an elastic member; 50. a reset mechanism; 510. a reset member; 60. a polarizing plate; 70. a wire collecting seat; 710. a mounting cavity; 711. a notch; 720. an arc-shaped slot; 730. an accommodating chamber; 90. a lens; 910. a base; 200. a camera module; 300. an electronic device; 301. a housing; 302. a camera hole.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

Referring to fig. 1 to 3, a light polarization angle adjusting device 100 according to an embodiment of the present disclosure is used for adjusting a polarization angle of incident light when a lens is used for shooting. The light polarization angle adjusting device 100 comprises a support 10, and a carrier mechanism 20, a linkage mechanism 30, a driving mechanism 40 and a reset mechanism 50 are mounted on the support 10. Referring to fig. 12 and 13, the holder 10 of the light polarization angle adjusting device 100 is fixed to the base 910 of the lens 90 so that the light polarization angle adjusting device 100 may constitute the camera module 200 together with the lens 90. Further, as shown in fig. 12 and 14, the camera module 200 may be mounted in the housing 301 of the electronic device 300, wherein in fig. 14, only the knob 430 of the camera module 200 is exposed outside the housing 301, and other parts of the camera module 200 are located in the housing 301.

The carrier mechanism 20 includes a mounting plate 210 for mounting the polarizer 60, wherein the mounting plate 210 is rotatably mounted on the bracket 10 for driving the polarizer 60 to cover the object side of the lens 90. As shown in fig. 12, after the bracket 10 of the light polarization angle adjusting apparatus 100 is fixed to the base 910 of the lens 90, the mounting plate 210 is rotatably disposed at the object side of the lens 90, so that the polarizer 60 on the mounting plate 210 can cover the object side of the lens 90. The object side refers to a side of the lens 90 close to the subject during shooting. The linkage mechanism 30 is used to transmit the power of the driving mechanism 40 to the mounting plate 210, so as to drive the mounting plate 210 to rotate.

The drive mechanism 40 is configured to transmit torque to the mounting plate 210 via the linkage mechanism 30. As shown in fig. 3 to 5, the driving mechanism 40 includes a driving shaft 410, a transmission unit 420, wherein the driving shaft 410 is mounted to the frame 10 and rotatable about its axis, and the driving shaft 410 is mounted and configured to move back and forth with respect to the frame 10. The movement of the driving shaft 410 toward the mounting plate 210 is defined as the driving shaft 410 moving forward, and vice versa as the driving shaft moving backward. Further, when the light polarization angle adjusting apparatus 100 is mounted in the housing 301 of the electronic device 300, the mounting plate 210 is closer to the inside of the housing 301. Accordingly, "forward" herein may also be referred to as "inward" and "rearward" accordingly may also be referred to as "outward".

The transmission unit 420 is coupled to the driving shaft 410, and the transmission unit 420 can rotate about the axis of the driving shaft 410 together with the driving shaft 410, and at the same time, the transmission unit 420 can move back and forth together with the driving shaft 410. When the device is specifically arranged, the groove 120 is formed in the support 10 along the axial direction of the driving shaft 410, and the driving shaft 410 is in clearance fit with the groove 120 so as to be capable of freely rotating and moving back and forth. Further, as shown in fig. 3, in order to facilitate the operation of the driving shaft 410, a knob 430 is further provided at an end of the driving shaft 410 away from the mounting plate 210, and the knob 430 is fixed to the driving shaft 410. The user can rotate the drive shaft 410 by turning the knob 430 and move the drive shaft 410 forward and backward by pulling the knob 430 forward and backward, thereby facilitating the operation of the drive shaft 410.

The driving shaft 410 moves forward and backward to drive the transmission unit 420 to move forward and backward, so that the transmission unit 420 can be connected with or disconnected from the linkage mechanism 30. Specifically, as shown in fig. 3 to 5, the linkage mechanism 30 includes a rotating shaft 310, and a first linkage member 320 and a second linkage member 330 respectively connected to the rotating shaft 310, wherein the first linkage member 320 is connected to the mounting plate 210 for driving the mounting plate 210 to rotate, and the second linkage member 330 is connected to the transmission unit 420. The transmission unit 420 includes a transmission member 421 fixed to the driving shaft 410. As shown in fig. 3, the transmission member 421 is located at the right side of the second linkage member 330, and the transmission member 421 is connected to the second linkage member 330, so that when the driving shaft 410 rotates under the external force, the transmission member 421 drives the mounting plate 210 to rotate through the linkage mechanism 30. When the driving shaft 410 is pulled backward, the transmission member 421 will be disengaged from the second linkage member 330, and the driving shaft 410 cannot drive the mounting plate 210 to rotate through the linkage mechanism 30.

In other ways, still referring to fig. 3, the transmission member 421 can also be located at the left side of the second linkage member 330. And the light polarization angle adjusting apparatus 100 is configured such that the transmission member 421 is disengaged from the second linkage member 330 when the driving shaft 410 is pushed forward; when the driving shaft 410 is pulled backward after the transmission member 421 is disengaged from the second linkage member 330, the transmission member 421 is connected to the second linkage member 330.

The light polarization angle adjusting device 100 may be configured such that the transmission member 421 is connected to the second linkage member 330, and the polarization effect can be directly adjusted. The light polarization angle adjusting apparatus 100 may be in a state where the transmission member 421 and the second linkage member 330 are disengaged, and when the polarization effect needs to be adjusted, the driving shaft 410 is pulled forward or backward.

When the mounting plate 210 rotates, the polarizer 60 covers the object side of the lens 90 along with the rotation of the mounting plate 210, so that the light rays passing through the polarizer 60 and entering the lens barrel of the lens 90 have different polarization directions to eliminate the reflection phenomenon from the outside of the object, and each degree of the polarizer 60 can have different polarization effects to adapt to various shooting conditions. In some embodiments, polarizer 60 is a sheet having one polarization direction, and then rotating the sheet results in polarized light of a different polarization direction. In other embodiments, the polarizer 601 includes a plurality of sheets, each sheet has a different polarization direction, and each sheet rotates with the polarizer 60 and sequentially passes through external light, and at this time, polarized light with different polarization directions is obtained by switching the plurality of sheets.

In one embodiment, the second coupling member 330 includes a second bevel gear coupled to the rotating shaft 310, and the transmission member 421 includes a first bevel gear coupled to the driving shaft 410, the second bevel gear engaging with the first bevel gear. By adopting bevel gear transmission, the driving shaft 410 and the rotating shaft 310 can be arranged to be perpendicular to each other, thereby realizing the reversing during transmission and reducing the volume of the driving mechanism 40. The first linkage member 320 includes a gear, the carrier mechanism 20 includes a shaft core 220, the mounting plate 210 is erected on the bracket 10 through the shaft core 220, a gear portion 211 is arranged on an outer edge of the mounting plate 210, and the gear portion 211 is engaged with the gear.

In other embodiments, the second linkage member 330 includes a worm portion disposed on the rotating shaft 310, and the transmission member 421 includes a worm wheel coupled to the driving shaft 410, the worm wheel engaging with the worm portion. The first link 320 is a worm portion provided on the rotation shaft 310, and the outer edge of the mounting plate 210 is a worm gear portion engaged with the worm portion.

The reset mechanism 50 is used to automatically reset the mounting plate 210, and then the camera module 200 returns to the non-polarization state or the original polarization state. As shown in fig. 3, in one embodiment, the return mechanism 50 includes a return member 510, and the return member 510 is disposed between the linkage mechanism 30 and the cradle 10. Specifically, the reset element 510 includes an elastic element 450, the elastic element 450 is a spring, one end of the spring is fixed to the rotating shaft 310, and the other end of the spring is fixed to the bracket 10. When the transmission member 421 is connected to the second linkage member 330, the resilient plate is in a power-storing state. When the transmission member 421 is to be disengaged from the second linkage member 330, the elastic force of the elastic sheet drives the turntable to rotate, so as to drive the mounting plate 210 to drive the polarizer 60 to reset.

In specific implementation, in order to conveniently set the reset mechanism 50, as shown in fig. 4 and fig. 6 to 8, the rack 10 is provided with the hub 70, the hub 70 is provided with the mounting cavity 710, the rotating shaft 310 is rotatably mounted in the mounting cavity 710, and the reset mechanism 50 is disposed between the rotating shaft 310 and the hub 70. The hub 70 is detachably disposed on the bracket 10 to facilitate replacement of the inner spring. When the wire collecting seat 70 is specifically arranged, a plurality of holes can be formed in the wire collecting seat 70, a convex cylinder is correspondingly arranged on the support 10, and the cylinder and the holes are in interference fit to enable the wire collecting seat 70 to be stably fixed on the support 10. In other embodiments, the hub 70 may be integrally formed with the bracket 10. Referring to fig. 3 and 9, the bottom of the hub 70, i.e., the side facing the support 10, is provided with a receiving cavity 730, and the receiving cavity 730 is used for mounting the second linkage member 330 together with the receiving cavity 110 on the support 10, thereby facilitating the reduction of the size of the light polarization angle adjusting apparatus 100 in the axial direction of the rotating shaft 310.

Referring to fig. 7, 10 and 11, preferably, the elastic piece is a metal elastic piece, which surrounds the rotation shaft 310 at least one turn and is elastically abutted against the inner wall of the mounting cavity 710. One end of the elastic sheet is fixed to the rotating shaft 310, and the other end of the elastic sheet penetrates through the mounting cavity 710 and is fixed to the hub 70. A notch 711 penetrating through the outside is arranged on the inner wall of the mounting cavity 710, and the other end of the elastic sheet penetrates through the notch 711 and is fixed on the outer wall of the mounting cavity 710. The elastic sheet naturally generates an elastic force abutting against the inner wall of the mounting cavity 710 after bending, and the elastic force can be used for driving the mounting plate 210 to reset. Elastic potential energy is stored after the elastic sheet is installed, and when the transmission unit 420 is separated from the linkage mechanism 30, the elastic sheet can directly act on the rotating shaft 310 and further be used for driving the installation disc 210 to reset.

Further, as shown in fig. 7, one side of the installation cavity 710 is further provided with a plurality of arc-shaped slots 720 arranged along the radial direction of the rotating shaft 310, and both ends of the arc-shaped slots 720 are provided with openings through which the elastic sheets can pass. The arc-shaped groove 720 is arranged to increase the inner diameter of the mounting cavity 710, so that the spring plates with different sizes can be adapted.

The way of fixing one end of the elastic sheet to the rotating shaft 310 is not limited. As shown in fig. 10, in a specific embodiment, a locking groove 311 is disposed on an outer surface of the rotating shaft 310 along a radial direction of the rotating shaft 310, and one end of the elastic piece extends into the locking groove 311 and is positioned in the locking groove 311 by an elastic force. In other embodiments, the outer surface of the rotating shaft 310 is provided with a flat section 312 parallel to the axis of the rotating shaft 310, and one end of the elastic piece is fixed on the flat section 312 by gluing. Thus, one end of the spring plate is substantially in the radial direction of the rotation shaft 310, facilitating the spring plate to make multiple turns around the rotation shaft 310 in the circumferential direction around the axis of the rotation shaft 310.

In the above-mentioned light polarization angle adjusting apparatus 100, during use, the driving shaft 410 is pushed forward, so that the driving shaft 410 drives the transmission unit 420 to move forward and connect with the linkage mechanism 30, and then the knob 430 drives the driving shaft 410 to rotate, the driving shaft 410 drives the mounting plate 210 to rotate through the transmission unit 420 and the linkage mechanism 30, and the polarizer 60 covers the object side of the lens 90 as the mounting plate 210 rotates, so that the light rays passing through the polarizer 60 and entering the lens barrel of the lens 90 have different polarization directions. When the polarization effect is not needed, the driving shaft 410 is pulled backwards to separate the transmission unit from the linkage mechanism 30, at this time, under the action of the reset piece 510, the mounting plate 210 drives the polarizer 60 to automatically reset, the manual adjustment for resetting is not needed, and the position consistency of the polarizer 60 after each resetting is ensured.

In addition, the light polarization angle adjusting device 100 can adjust the polarization angle by rotating the driving shaft 410, and can automatically reset by pulling the driving shaft 410 backward and pulling the polarizer 60, thereby being simple to operate and easy to operate. Further, the reset mechanism is mechanically reset, and has no coil or magnet, so that it is not interfered by the voice coil motor or magnetic element in the camera module 200.

In other embodiments, the restoring member 510 may also be a torsion spring or a memory alloy member disposed between the bracket 10 and the rotating shaft 310. The position of the restoring member 510 is not limited to the position between the linkage 30 and the stand 10, and the restoring member 510 may be disposed between the mounting plate 210 and the stand 10. Specifically, the restoring member 510 includes a spring plate, a torsion spring or a memory alloy member, and is disposed between the shaft core 220 of the support mounting plate 210 and the bracket 10.

In the light polarization angle adjusting device 100, the elastic sheet is elastically abutted against the inner wall of the mounting cavity 710 of the hub 70, so that when the polarization angle is adjusted, the elastic force of the elastic sheet tends to reset the mounting plate 210, which may hinder the rotation of the driving shaft 410. To this end, in one embodiment, as shown in fig. 3, a sealing ring 440 is disposed between the driving shaft 410 and the support frame 10, an outer ring of the sealing ring 440 is fixed to the support frame 10, an inner ring of the sealing ring 440 is movably disposed relative to the driving shaft 410, and an elastic member 450 is disposed between the sealing ring 440 and the transmission member 421, wherein the elastic member 450 is configured to provide an elastic force that causes the transmission member 421 to have a tendency to move toward the second coupling member 330. Preferably, the elastic member 450 is disposed at the right side of the transmission member 421, and the elastic member 450 is a spring sleeved on the driving shaft 410, and two ends of the spring respectively abut against the end surface of the sealing ring 440 and the transmission member 421. The sealing ring 440 may be a metal rubber ring or a rubber sealing ring 440, which has a moisture intrusion prevention effect. In a preferred embodiment, a step 121 is disposed on an inner wall of an end of the groove 120 away from the second linkage member 330, the sealing ring 440 is a rubber sealing ring 440, and an end surface of the rubber sealing ring 440 abuts against the step 121, so as to achieve a better effect of preventing moisture from entering.

In one embodiment, the side of the transmission member 421 opposite to the sealing ring 440 (the left side in fig. 3) is provided with a positioning ring 422 which is sleeved on the driving shaft 410. The positioning ring 422 moves along with the driving shaft 410, the positioning ring 422 positions the driving member 421 at the left side of the driving member 421, and the elastic member 450 is installed in a pre-compressed state. When the transmission member 421 moves to the position connected to the second linkage member 330 under the driving of the driving shaft 410, the elastic force of the elastic member 450 keeps the transmission member 421 connected to the second linkage member 330 and counteracts the elastic force of the elastic sheet. So that the user can conveniently adjust the polarization angle without being influenced by the reset mechanism. When the polarizer 60 needs to be reset, the driving shaft 410 is pulled backwards, the transmission member 421 moves backwards along with the driving shaft 410 and compresses the elastic member 450, and then the transmission member 421 and the second linkage member 330 can be disconnected, and the reset mechanism 50 acts to automatically reset the mounting plate 210.

In the above embodiment, by disposing the elastic member 450 between the sealing ring 440 and the transmission member 421, when the polarization effect needs to be adjusted, the elastic member 450 can automatically counteract the effect of the reset mechanism 50, so as to facilitate the operation of the driving shaft 410. When the polarization effect does not need to be adjusted, only the driving shaft 410 still needs to be pulled backwards, and no additional action needs to be added.

In other embodiments, the transmission member 421 may be disposed on the left side of the second linkage member 330, and in this case, the elastic member 450 may also be disposed on the left side of the transmission member 421, and the elastic member 450 is installed in a pre-stressed state, and two ends of the elastic member 450 respectively abut against the transmission member 421 and the bracket 10. When the transmission member 421 moves to a position connected to the second linkage member 330 under the driving of the driving shaft 410, the elastic force of the elastic member 450 keeps the transmission member 421 connected to the second linkage member 330 and counteracts the elastic force of the elastic sheet. When the polarizer 60 needs to be reset, the driving shaft 410 is pushed forward, the transmission member 421 moves backward along with the driving shaft 410 and compresses the elastic member 450, and then the transmission member 421 and the second linkage member 330 can be disconnected, and the reset mechanism 50 acts to automatically reset the mounting plate 210.

In other embodiments, a sealing ring 440 is disposed between the driving shaft 410 and the support frame 10, the sealing ring 440 is fixed on the driving shaft 410, and the sealing ring 440 is in interference fit with the support frame 10. In this embodiment, the sealing ring 440 can move back and forth along with the driving shaft 410, and when the polarization effect is adjusted, the restoring force of the elastic sheet of the restoring mechanism 50 acting on the rotating shaft 310 is offset by the friction force between the sealing ring 440 and the inner wall of the groove 120 of the bracket 10, so that the user can conveniently adjust the polarization angle without being affected by the restoring mechanism. When the polarization effect does not need to be adjusted, it is still only necessary to pull the driving shaft 410 directly backwards, and no additional action needs to be added.

As shown in fig. 12 and 13, the camera module 200 of the present embodiment includes the light polarization angle adjusting device 100 and the lens 90, wherein the bracket 10 of the light polarization angle adjusting device 100 is connected to the base 910 of the lens 90.

Specifically, the bracket 10 is supported on the base 910 of the lens 90, and the bracket 10 and the base 910 are fixed by dispensing. The mount 210 is located on the object side of the lens 90. The driving mechanism 40 is configured to drive the carrier mechanism 20 to rotate through the linkage mechanism 30, so as to adjust a position of the polarizer 60 relative to the lens 90, and further adjust a polarization angle of incident light that passes through the polarizer 60 and enters the lens 90. The lens 90 approaches the mounting plate 210 during focusing but does not touch the mounting plate 210.

The camera module 200 of the present embodiment can start to adjust the polarization angle after pushing the driving shaft 410 forward, and can automatically reset the polarizer 60 by pulling the driving shaft 410 backward, which is simple to operate and easy to operate. Further, since the reset mechanism is not provided with a coil or a magnet when the reset mechanism is mechanically reset, the reset mechanism is not interfered by the voice coil motor or the magnetic element in the camera module 200.

As shown in fig. 14, the electronic device 300 according to the embodiment of the present disclosure may be, but is not limited to, a mobile phone, a smart watch, a car recorder, a notebook computer, and the like.

As shown in fig. 1, 12 and 14, an electronic device 300 according to an embodiment of the present disclosure includes the light polarization angle adjusting device 100, the lens 90, and the housing 301. The shell 301 is provided with a camera hole 302 corresponding to the position of the lens 90, the light polarization angle adjusting device 100 and the lens 90 are arranged in the shell 301, the knob 430 is positioned at the side part of the shell 301, the lens 90 is opposite to the camera hole 302, and the polarizer 60 in the carrier mechanism 20 is positioned between the lens 90 and the camera hole 302. It is understood that the positional relationship between the lens 90 and the light polarization angle adjusting device 100 is referred to the camera module 200, and will not be described herein.

In the electronic device 300 of the present embodiment, the driving shaft 410 is pushed forward to start the polarization angle adjustment, and the driving shaft 410 is pulled backward to automatically reset the polarizer 60, which is simple and easy to operate. Further, since the reset mechanism is not provided with a coil or a magnet when the reset mechanism is mechanically reset, the reset mechanism is not interfered by the voice coil motor or the magnetic element in the camera module 200. In addition, when the light polarization angle adjusting device 100 is provided with the knob 430, the knob 430 is located at the side of the housing 301, and the mounting plate 210 can be conveniently driven to rotate by rotating the knob 430, so that the adjusting precision of the electronic device 300 is effectively improved, and the requirement of various photographers is met.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A light polarization angle adjusting apparatus for adjusting a polarization angle of incident light when taking a picture with a lens, comprising:

a support;

the carrier mechanism is used for installing a polaroid, is rotatably installed on the bracket and is used for driving the polaroid to cover the object side of the lens;

the linkage mechanism is in transmission connection with the carrier mechanism;

the driving mechanism comprises a driving shaft rotatably mounted on the bracket and a transmission unit connected with the driving shaft, and the driving shaft is arranged on the bracket in a back-and-forth movement manner along the axial direction of the driving shaft so as to drive the transmission unit to move back and forth, so that the transmission unit can be in transmission connection with or disconnected from the linkage mechanism;

the resetting mechanism comprises a resetting piece, the resetting piece is arranged between the linkage mechanism and the bracket or between the carrier mechanism and the bracket, and the resetting piece is used for driving the carrier mechanism to reset when the transmission unit is disconnected from the linkage mechanism in transmission;

the carrier mechanism comprises a mounting disc for mounting the polaroid, and the mounting disc is rotatably mounted on the bracket; the linkage mechanism comprises a rotating shaft, a first linkage piece and a second linkage piece, wherein the first linkage piece and the second linkage piece are respectively connected with the rotating shaft; the transmission unit comprises a transmission piece, the transmission piece is fixed on the driving shaft, and the transmission piece is used for being connected with the second linkage piece;

the support is provided with a wire collecting seat, the wire collecting seat is provided with an installation cavity, the rotating shaft is rotatably installed in the installation cavity, and the reset piece is arranged between the rotating shaft and the wire collecting seat;

the reset piece comprises an elastic sheet which is positioned in the installation cavity, surrounds the rotating shaft for at least one circle and is elastically abutted against the inner wall of the installation cavity, wherein one end of the elastic sheet is fixed with the rotating shaft, and the other end of the elastic sheet penetrates out of the installation cavity and is fixed on the wire concentration seat;

one side of installation cavity still is equipped with a plurality of edges the radial arc wall of arranging of pivot, the both ends of arc wall all have the opening.

2. The light polarization angle adjusting device of claim 1, wherein a slot is formed in an outer surface of the rotating shaft along a radial direction of the rotating shaft, and one end of the elastic piece is clamped in the slot; or the outer surface of the rotating shaft is provided with a plain surface parallel to the axis of the rotating shaft, and one end of the elastic sheet is attached to the plain surface.

3. The light polarization angle adjustment apparatus of claim 1, wherein one side of the transmission member is provided with an elastic member configured to provide an elastic force that causes the transmission member to have a tendency to move toward the second linkage member.

4. The light polarization angle adjusting device of claim 3, wherein the transmission member is located on a side of the second linkage member facing away from the mounting plate, a sealing ring is disposed between the driving shaft and the bracket, the sealing ring is fixed to the bracket, and the elastic member is disposed between the sealing ring and the transmission member.

5. A light polarization angle adjusting apparatus according to claim 1, wherein the second linkage member comprises a worm part provided to the rotation shaft, and the transmission member comprises a worm wheel connected to the driving shaft, the worm wheel being engaged with the worm part; the first linkage part is a worm part arranged on the rotating shaft, and the outer edge of the mounting disc is a worm wheel part meshed with the worm part.

6. The light polarization angle adjusting device of claim 1, wherein the hub has a plurality of holes, and the holder has a corresponding protruding cylinder, and the cylinder and the holes are in interference fit to fix the hub to the holder.

7. The light polarization angle adjustment apparatus of claim 1, wherein the hub is integrally formed with the support.

8. The light polarization angle adjustment device of claim 1, wherein the elastic sheet is a metal elastic sheet.

9. The light polarization angle adjustment apparatus of claim 1, wherein a sealing ring is disposed between the driving shaft and the support, the sealing ring is fixed on the driving shaft, and the sealing ring is in interference fit with the support.

10. The light polarization angle adjustment apparatus of claim 1, wherein the transmission member comprises a first bevel gear, and the second linkage member comprises a second bevel gear, the second bevel gear being engaged with the first bevel gear.

11. The light polarization angle adjusting device of claim 1, wherein the first linkage member is a gear, the carrier mechanism comprises a shaft core, the mounting plate is mounted on the bracket through the shaft core, and a gear part is provided on an outer edge of the mounting plate and engaged with the gear.

12. The light polarization angle adjustment device of claim 1, wherein the drive mechanism further comprises a knob, the knob being fixed to the drive shaft.

13. A camera module comprising the light polarization angle adjusting device of any one of claims 1 to 12, and a lens, wherein the polarizer is mounted on the carrier mechanism, the carrier mechanism is rotatably mounted on an object side of the lens, the driving mechanism is configured to drive the carrier mechanism to rotate through the linkage mechanism, adjust a position of the polarizer relative to the lens, and further adjust a polarization angle of incident light entering the lens through the polarizer, and the resetting mechanism is configured to drive the carrier mechanism to reset when the transmission unit is disconnected from the linkage mechanism.

14. An electronic device comprising the light polarization angle adjusting device of any one of claims 1 to 12, and a housing and a lens, wherein the housing is provided with a camera hole corresponding to the position of the lens, the lens and the light polarization angle adjusting device are mounted in the housing, the lens faces the camera hole, and a polarizer in the carrier mechanism is located between the lens and the camera hole.