CN211880471U - Polarizing film for lens, polarizing assembly, lens, camera module and electronic equipment - Google Patents

Abstract

The application discloses a polaroid, a polarization component, a lens, a camera module and an electronic device for the lens, wherein the polaroid is used for being installed at the installation position of the lens, and is configured to be installed at the installation position and then can rotate around a rotation axis, so that light rays which penetrate through the polaroid and then enter a lens barrel of the lens have different polarization directions, the rotation axis is perpendicular to the polaroid and parallel to the optical axis of the lens, and the rotation axis is separated from the optical axis. The utility model provides a polaroid has bigger volume for polaroid among the prior art, and is lower to the required precision of production facility to reduce the input in the aspect of production facility, reduced the manufacturing cost of polaroid, and then reduced the manufacturing cost of the module of making a video recording, in addition, the polaroid of this application can not install on the lens cone, thereby reduced the processing requirement of lens cone, and make the lens cone produce alone, sell, very big economic benefits has been brought from this.

Description

Polarizing film for lens, polarizing assembly, lens, camera module and electronic equipment

Technical Field

The application relates to the field of electronic equipment, in particular to a polaroid, a polarization component, a lens, a camera module and electronic equipment for the lens.

Background

When a camera is used to photograph a subject, particularly a reflective object, such as a reflective metal surface, a reflective glass surface, etc., a polarizing plate needs to be installed to obtain a clearer image.

In the prior art, a polaroid used for a lens is circular, the size of the polaroid is matched with that of a lens barrel, and the lens barrel is generally small, so that the polaroid is also small, when the polaroid is produced, production equipment is required to have high precision, and the purchase cost and the maintenance cost of the production equipment meeting the requirements are high, so that the production cost of the polaroid is high, and the production cost of a camera module is high.

SUMMERY OF THE UTILITY MODEL

The application provides a polaroid, polarization component, camera lens, module and electronic equipment make a video recording for the camera lens, can reduce the manufacturing cost of the module of making a video recording.

According to a first aspect of the present application, there is provided a polarizer for a lens, the polarizer being configured to be mounted at a mounting position of the lens, the polarizer being configured to be rotatable about a rotation axis after being mounted at the mounting position, so that light rays entering a barrel of the lens after passing through the polarizer have different polarization directions, wherein the rotation axis is perpendicular to the polarizer and parallel to an optical axis of the lens, and the rotation axis is spaced apart from the optical axis.

The effects in the above embodiment are: the utility model provides a polaroid has bigger volume for polaroid among the prior art, and is lower to the required precision of production facility to reduce the input in the aspect of production facility, reduced the manufacturing cost of polaroid, and then reduced the manufacturing cost of the module of making a video recording, in addition, the polaroid of this application can not install on the lens cone, thereby reduced the processing requirement of lens cone, and make the lens cone produce alone, sell, very big economic benefits has been brought from this.

According to some embodiments, a cross section of the polarizer perpendicular to the rotation axis is a first section, the first section is a surface swept by a base circle rotated by a first preset angle around the rotation axis, and a circle center rotation trajectory of the base circle is a circular arc centered on a point where the rotation axis intersects with a surface on which the first section is located, wherein the base circle is perpendicular to the rotation axis and does not intersect with the rotation axis.

The effects in the above embodiment are: compared with the polarizing plates with other shapes, the polarizing plates with the shapes have smaller volumes, so that the production cost of the polarizing plates is further reduced.

According to some embodiments, the first preset angle α has a value range of: alpha is more than or equal to 90 degrees and less than or equal to 360 degrees.

The effects in the above embodiment are: the value range of the first preset angle enables the polarization direction of light rays in the lens barrel to be any angle, so that the lens barrel is suitable for different external environments and user requirements.

According to some embodiments, the polarizer comprises a plurality of sheets, each sheet being arranged around the rotation axis.

The effects in the above embodiment are: the arrangement enables the polaroid to rotate by a small angle, and the polarization direction of light rays in the lens cone can be changed greatly, so that the time consumption for obtaining the required polarization direction is shortened.

According to some embodiments, the shapes and sizes of the sheet bodies are the same, the cross section of each sheet body perpendicular to the rotation axis is a second section, the second section is a surface swept by the base circle rotating around the rotation axis by a second preset angle, the circle center rotation track of the base circle is an arc taking a point where the rotation axis intersects with the surface where the second section is located as a circle center, and the value range of the second preset angle β is as follows: 0 ° < β <360 °.

The effects in the above embodiment are: when the sheet body in the shape enables the polaroid to rotate, the change of the polarization direction of light in the lens cone is changed in a stepped mode, and therefore user experience is improved.

According to a second aspect of the present application, there is provided a polarization assembly for a lens, comprising:

the polarizing plate of any one of the above;

and the driving device is used for driving the polaroid to rotate around the rotation axis.

The effects in the above embodiment are: in the production process of the polarization component, the driving program of the driving device can be designed, so that the rotation of the polaroid is more intelligent.

According to some embodiments, the drive means comprises a rotary shaft, the centre axis of which coincides with the axis of rotation.

The effects in the above embodiment are: the rotation that above-mentioned setting made the polaroid can only be realized through drive arrangement, need not the drive of other transmission structure to make polarization component's constitution simpler, occupation space is littleer, is suitable for to assemble to making a video recording in the module.

According to some embodiments, the polarization component further comprises:

a frame disposed around an outer edge of the polarizer;

wherein, the axis of rotation is connected with the frame.

The effects in the above embodiment are: the arrangement ensures that the polaroid is not easy to deform by external force, and ensures the flatness of the polaroid.

According to some embodiments, the rim comprises a carrying structure having a receiving through hole, the distance of the center of the receiving through hole to the rotation axis being equal to the distance of the center of the base circle to the rotation axis;

the bearing structure is configured to further bear the light processing piece and enable the light processing piece to cover the accommodating through hole, so that external light can enter the lens barrel through the light processing piece and the accommodating through hole;

wherein, the light processing piece comprises a filter and a lens.

The effects in the above embodiment are: above-mentioned setting makes the light handle spare changeable to supplying outside light to pass along with the rotation of frame to make outside light get into the lens cone after the light is handled, make polarization component collect multiple functions in an organic whole, promoted user experience.

According to a third aspect of the present application, there is provided a lens barrel including:

a lens barrel including a light entrance;

a lens located within the lens barrel;

the polarization assembly of any one of the above, wherein the rotation axis is parallel to and spaced apart from the optical axis of the lens, and the polarizer covers the light inlet in a rotation stroke of rotating around the rotation axis, so that the light passing through the polarizer enters the light inlet.

The effects in the above embodiment are: the size of the basic circle can be matched with the lens barrel by enabling the polaroid to be parallel to the optical axis of the lens, so that the volume of the polaroid is minimized, and meanwhile, the arrangement also enables the volume of the lens to be smaller and the lens to be more suitable for being installed in a smaller space.

According to a fourth aspect of the present application, there is provided a camera module comprising:

the lens described above;

and the photosensitive chip is used for receiving the light rays passing through the lens and converting light ray signals into electric signals.

The effects in the above embodiment are: the image that the module of making a video recording obtained of this application is more clear, and the maintenance of part is changed more simply.

According to a fifth aspect of the present application, there is provided an electronic device comprising:

the camera module is provided.

The effects in the above embodiment are: the electronic equipment has better image performance and is convenient to maintain.

According to the polaroid for the lens, the polaroid is used for being installed at the installation position of the lens, and the polaroid is configured to rotate around a rotation axis perpendicular to the direction of the polaroid after being installed at the installation position, so that light rays passing through the polaroid and entering a lens barrel of the lens have different polarization directions, wherein the rotation axis is perpendicular to the polaroid and parallel to the optical axis of the lens, and the rotation axis is separated from the optical axis. The utility model provides a polaroid has bigger volume for polaroid among the prior art, and is lower to the required precision of production facility to reduce the input in the aspect of production facility, reduced the manufacturing cost of polaroid, and then reduced the manufacturing cost of the module of making a video recording, in addition, the polaroid of this application can not install on the lens cone, thereby reduced the processing requirement of lens cone, and make the lens cone produce alone, sell, very big economic benefits has been brought from this.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a prior art polarizer;

FIG. 2 is a schematic structural view of a polarizing plate in a first embodiment of the present application;

FIG. 3 is a schematic structural view of a polarizing plate in a first embodiment of the present application;

FIG. 4 is a schematic structural view of a polarizing plate in a second embodiment of the present application;

FIG. 5 is a schematic view showing the structure of a polarizing plate in a third embodiment of the present application;

FIG. 6 is a schematic structural view of a first sheet, a second sheet, and a third sheet of a polarizer of a first embodiment of the present disclosure at rest;

FIG. 7 is a schematic structural diagram of a first sheet, a second sheet, and a third sheet when a polarizer is rotated by a first angle according to a first embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a first sheet, a second sheet, and a third sheet when a polarizer is rotated by a second angle according to a first embodiment of the present disclosure;

FIG. 9 is a schematic view of a first panel and a second panel of a second embodiment of the present application;

FIG. 10 is a schematic view of a first panel and a second panel of a third embodiment of the present application;

FIG. 11 is a schematic view of a first panel and a second panel of a fourth embodiment of the present application;

FIG. 12 is a schematic diagram of a polarization assembly according to an embodiment of the present disclosure;

FIG. 13 is a schematic diagram illustrating a structure of a bezel when the bezel is stationary according to an embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram illustrating a bezel rotated by a first angle according to an embodiment of the present disclosure;

fig. 15 is a schematic structural diagram of a camera module according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

As shown in fig. 1, in the prior art, a polarizer 100a for a lens is circular and has a size matched with a lens barrel, and since the lens barrel is generally small and accordingly the polarizer 100a is also small, when the polarizer 100a is produced, a production device is required to have high precision, and the procurement cost and the maintenance cost of the production device meeting the requirements are high, which results in high production cost of the polarizer 100a, and thus high production cost of the camera module.

As shown in fig. 2 to 15, to solve the above problems, an embodiment of the present application provides a polarizer 100 for a lens, where the polarizer 100 is lower in production cost than the polarizer 100a in the prior art, and thus the production cost of the camera module 20 is lower.

The polarizing plate 100 is located on a side of the lens barrel 500 of the lens close to the object after the lens is used, so that external light passes through the polarizing plate 100, becomes polarized light, and enters the lens barrel 500, thereby enabling the camera module 20 to obtain a polarized image. In order to locate the polarizer 100 on the side of the lens barrel close to the object, in one embodiment, the polarizer 100 is manually taken and the polarizer 100 is located on the side of the lens barrel close to the object. In another embodiment, the camera module 20 has a mounting position closer to the subject than the lens barrel is, and the polarizer 100 is mounted at the mounting position such that the polarizer 100 is located on the side of the lens barrel close to the subject.

After the polarizer 100 is located on the side of the lens barrel close to the object, the polarization direction of the polarized light passing through the polarizer 100 is generally required to be adjusted to ensure the clearest obtained polarized image. To achieve the above object, the polarizer 100 in the present embodiment is configured to be rotatable about a rotation axis 110 perpendicular to the polarizer 100, so that a user can make polarized light have different polarization directions by rotating the polarizer 100.

The polarizer 100a in the prior art is circular, the polarizer 100a is disposed opposite to the lens barrel and is mounted on the lens barrel, the rotation axis of the polarizer 100a coincides with the optical axis of the lens, and the rotation axis 110 of the polarizer 100 in this embodiment does not coincide with the optical axis of the lens, at this time, the polarizer 100 has a first portion (corresponding to the polarizer 100a) disposed opposite to the lens barrel 500, the periphery of the first portion has a second portion, and the second portion can be disposed opposite to the lens barrel 500 by the rotation of the polarizer 100, that is, compared with the polarizer 100a in the prior art, the polarizer 100 is different in that the volume is larger. The precision requirement on the production equipment is lower when the size of the polaroid 100 is larger, so that the investment in the production equipment is reduced, the production cost of the polaroid 100 is reduced, the production cost of the camera module is reduced, and meanwhile, the size of the polaroid 100 is larger, so that the installation and the driving of the polaroid 100 are facilitated.

In addition to the difference of the large volume, the polarizing plate 100 has another difference, and the polarizing plate 100 may not be mounted on the lens barrel 500. The polarizer 100 is not mounted on the lens barrel 500, which reduces the processing requirement of the lens barrel 500, and the lens barrel 500 can be produced and sold separately, thereby bringing great economic benefits.

In this embodiment, the polarizer 100 is parallel to the optical axis of the lens, and the rotation axis 110 is spaced apart from the optical axis. By making the polarizer 100 parallel to the optical axis of the lens, the volume of the polarizer 100 is minimized, and the lens is smaller and more suitable for being installed in a smaller space.

As shown in fig. 3 to 5, the shape of the polarizing plate 100 in the present embodiment may be: the polarizer 100 has a cross section perpendicular to the rotation axis 110, which is referred to as a first cross section 120, the first cross section 120 is a surface swept by a base circle 121 rotated by a first preset angle around the rotation axis 110, and a center of the base circle 121 rotates along a circular arc centered on a point where the rotation axis 110 intersects with a surface on which the first cross section 120 is located. Wherein the base circle 121 is perpendicular to the rotation axis 110 and does not intersect with the rotation axis 110, and the first preset angle is not 0. The circular arc refers to a part between any two points on a circle, wherein the two points can be overlapped or not overlapped. The polarizer 100 of the above shape is smaller in volume compared to the polarizer 100 of other shapes, thereby further reducing the production cost of the polarizer 100.

In addition, each of the first cross-sections 120 of the polarizer may be the same in a direction parallel to the rotation axis 110. The size of the base circle 121 may be matched to the lens barrel 500 to minimize the volume of the polarizer 100.

The value range of the first preset angle alpha is set according to the external environment and the user requirements. In one embodiment, as shown in fig. 2 to 15, the first preset angle α has a value range of: α is 90 ° ≦ α ≦ 360 °, for example, α may be 90 °, 180 °, 270 °, 360 °. The value range of the first preset angle alpha enables the polarization direction of the polarized light to be any angle, so that the method is suitable for different external environments and user requirements.

Specifically, when α is 90 °, the shape of the polarizing plate 100 is as shown in fig. 3. When α is 180 °, the polarizing plate 100 has a shape as shown in fig. 4, and the polarizing plate 100 is suitable for one camera module 20. When α is 270 °, the polarizing plate 100 can be used for two camera modules 20 at the same time, and the two camera modules 20 are respectively located in two perpendicular directions of the rotation axis 110. When α is 360 °, the polarizing plate 100 has a circular ring shape as shown in fig. 5, and the polarizing plate 100 can be used for two camera modules 20 at the same time, and the two camera modules 20 are respectively located in two opposite directions of the rotation axis 110.

As shown in fig. 2-4 and 12-15, the polarizer 100 in this embodiment may be a sheet having one polarization direction, and then polarized light with different polarization directions is obtained by rotating the sheet. As shown in fig. 6 to 11, the polarizer 100 in this embodiment may also include a plurality of sheets, the polarization direction of each sheet is different, and each sheet rotates along with the polarizer 100 and sequentially allows external light to pass through, and at this time, polarized light in different polarization directions is obtained by switching the plurality of sheets. For example, the polarizer 100 may include two sheets, such as the first sheet 130 and the second sheet 140 shown in fig. 9 to 11, and the polarization direction of the first sheet 130 may be at an angle of 30 degrees with respect to the horizontal direction, in which case the polarization direction of the second sheet 140 may be at an angle of 60 degrees with respect to the horizontal direction. The polarizer 100 may also include three sheets, such as the first sheet 130, the second sheet 140, and the third sheet 150 shown in fig. 6 to 8, in which the polarization direction of the first sheet 130 may form an angle of 30 degrees with the horizontal direction, in this case, the polarization direction of the second sheet 140 may form an angle of 60 degrees with the horizontal direction, and the polarization direction of the third sheet 150 may form an angle of 90 degrees with the horizontal direction. The polarizer 100 may also include four sheets, five sheets, which are not described in detail.

When the polarizer 100 includes a plurality of sheets, the polarization direction of the polarized light can be changed greatly by rotating the polarizer 100 by a small angle, thereby reducing the time required for obtaining the desired polarization direction. Specifically, as shown in fig. 6 to 8, the polarizer 100 includes three sheets, namely a first sheet 130, a second sheet 140, and a third sheet 150, when the polarizer 100 is at rest, the first sheet 130 is located on a side of the lens barrel 500 close to the object, and the first polarized light passing through the first sheet 130 enters the lens barrel 500. If the polarizer 100 is rotated, the second sheet 140 is switched to be located on the side of the lens barrel 500 close to the object, and the second polarized light passing through the second sheet 140 enters the lens barrel 500. When the polarizer 100 continues to be rotated, the polarization direction of the second polarized light is changed. After the polarizer 100 is rotated by a certain angle, the third sheet 150 is switched to be located on the side of the lens barrel 500 close to the object to be photographed, and the third polarized light passing through the third sheet 150 enters the lens barrel 500. As the polarizing plate 100 is rotated again, the polarization direction of the third polarized light is changed.

The sheets may have different polarization regions for each polarization direction for different polarization regions on a separate component; the polarizing plate 100 may be a plurality of different independent members, each of which has a different polarization direction, and the sheets may be combined together to form the whole.

In order to allow external light to pass through the sheets sequentially with the rotation of the polarizer 100, the sheets are arranged around a rotation axis 110. At this time, the sheet bodies have various positional relationships therebetween and accordingly have various shapes, and the first sheet body 130 and the second sheet body 140 will be described in detail as an example.

The first sheet 130 and the second sheet 140 have a first positional relationship: the first sheet 130 and the second sheet 140 are not overlapped and the first sheet 130 is connected to the second sheet 140. in order to make the first sheet 130 smaller in volume, as shown in fig. 6-8, in one embodiment, the first sheet 130 is circular and the radius of the circle is equal to the radius of the base circle 121.

To change the polarization direction of the polarized light by rotating the first sheet 130, as shown in fig. 9, in one embodiment, the shape of the first sheet 130 is: the cross section of the first sheet 130 perpendicular to the rotation axis 110 is a surface swept by the base circle 121 rotating around the rotation axis 110 by a first set angle, and the center of the base circle 121 rotates along a circular arc with a point where the rotation axis 110 intersects the surface of the cross section as the center. For example, when the first predetermined angle is 180 degrees, the first predetermined angle may be 30 degrees, 60 degrees, or 90 degrees, which is not described herein. In particular, each cross section of the first blade 130 perpendicular to the rotation axis 110, along a direction parallel to the rotation axis 110, may be identical.

In order to connect the second sheet 140 to the first sheet 130 having the above-mentioned shape and make the second sheet 140 smaller, as shown in fig. 6 to 8, in one embodiment, the second sheet 140 has a shape of: the cross section of the second blade 140 perpendicular to the rotation axis 110 is a surface swept by a semicircular arc rotating around the rotation axis 110 by a second set angle, and the circle center rotation trajectory of the semicircular arc is a circular arc with the point where the rotation axis 110 intersects the surface of the cross section as the circle center. The radius of the semicircular arc is equal to the radius of the base circle 121, and the second set angle is not 0 and is smaller than the first preset angle, for example, when the first preset angle is 180 degrees, the second set angle may be 90 degrees, 120 degrees, or 150 degrees, which is not described herein. In addition, each cross section of the second blade 140 perpendicular to the rotation axis 110 may be identical along a direction parallel to the rotation axis 110.

As shown in fig. 9, the second sheet 140 may also have the shape of: a cross section of the second blade 140 perpendicular to the rotation axis 110 is an area enclosed by a first circular arc 141, a second circular arc 142, a third circular arc 143, and a fourth circular arc 144. The angles of the first arc 141 and the second arc 142 are equal and have different lengths, and the angles of the first arc 141 and the second arc 142 are not 0 and are smaller than a first preset angle, for example, when the first preset angle is 180 degrees, the angles of the first arc 141 and the second arc 142 may be 30 degrees, 60 degrees and 90 degrees, respectively, which is not repeated herein. The third arc 143 and the fourth arc 144 have the same angle and the same length, the third arc 143 and the fourth arc 144 have the same radius as the base circle 121, and the openings of the third arc 143 and the fourth arc 144 face the outside of the area. In addition, each cross section of the second blade 140 perpendicular to the rotation axis 110 may be identical along a direction parallel to the rotation axis 110.

The first sheet 130 and the second sheet 140 have a second positional relationship: the first sheet 130 and the second sheet 140 are not overlapped, and the first sheet 130 is not connected to the second sheet 140, at this time, in order to make the volume of the first sheet 130 smaller, in this embodiment, the shape of the first sheet 130 is: the cross section of the first sheet 130 perpendicular to the rotation axis 110 is a surface swept by the base circle 121 rotating around the rotation axis 110 by a first set angle, and the center of the base circle 121 rotates along a circular arc with a point where the rotation axis 110 intersects the surface of the cross section as the center. The first set angle is not 0 and is smaller than a first preset angle. For example, when the first predetermined angle is 180 degrees, the first predetermined angle may be 30 degrees, 60 degrees, or 90 degrees, which is not described herein. In addition, each cross section of the first blade 130 perpendicular to the rotation axis 110 may be the same along a direction parallel to the rotation axis 110.

In order to make the volume of the second sheet 140 smaller, in this embodiment, the shape of the second sheet 140 is: the cross section of the second sheet 140 perpendicular to the rotation axis 110 is a surface swept by the base circle 121 rotating around the rotation axis 110 by a third set angle, and the center of the base circle 121 rotates along a circular arc with a point where the rotation axis 110 intersects the surface of the cross section as the center. Wherein, the third setting angle is not 0 and is smaller than the first preset angle. For example, when the first predetermined angle is 180 degrees, the third predetermined angle may be 20 degrees, 40 degrees, or 60 degrees, which is not described herein. In addition, each cross section of the second blade 140 perpendicular to the rotation axis 110 may be identical along a direction parallel to the rotation axis 110.

The first set angle may not be equal to the third set angle, and in this case, the first sheet 130 and the second sheet 140 have the same shape but different sizes. The first set angle may also be equal to a third set angle, and at this time, the shapes and sizes of the first sheet 130 and the second sheet 140 are the same, and it is derived that the shapes and sizes of the sheets may be the same, and at this time, the sheets have a cross section perpendicular to the rotation axis 110, and the cross section is the second section, the second section is a surface swept by the base circle 121 rotating around the rotation axis 110 by a second preset angle, and the rotation trajectory of the center of the base circle 121 is an arc with a point where the rotation axis 110 intersects with the surface of the second section as the center. Wherein, the value range of the second preset angle β is: 0 ° < β <360 °. When the sheet body with the shape enables the polarizer 100 to rotate, the change of the polarization direction of the polarized light is a step-type change, so that the user experience is improved. In addition, each second section of the blade may be identical along a direction parallel to the rotation axis 110.

In this embodiment, the second predetermined angle is not 0 and is less than one-half of the first predetermined angle. For example, when the first preset angle is 180 degrees, the second preset angle may be 20 degrees, 40 degrees, or 60 degrees, when the first preset angle is 270 degrees, the second preset angle may be 90 degrees, 100 degrees, or 110 degrees, and when the first preset angle is 360 degrees, the second preset angle may be 120 degrees, 130 degrees, or 140 degrees, which is not repeated herein.

The first sheet 130 and the second sheet 140 have a third positional relationship: in order to make the first sheet 130 and the second sheet 140 smaller in size, as shown in fig. 10, in the present embodiment, the shape of the first sheet 130 is the same as the shape of the first sheet 130 in the second positional relationship, but the size may be different. The second blade 140 has the same shape as the first blade 130 in the second positional relationship, but may have a different size. The arrangement is such that the overlapping portion of the first sheet 130 and the second sheet 140 may be circular, or may be: the cross section of the overlapping portion perpendicular to the rotation axis 110 is a surface swept by the base circle 121 rotated by a certain angle around the rotation axis 110, and the center rotation trajectory of the base circle 121 is a circular arc centered on a point where the rotation axis 110 intersects with the surface on which the cross section is located.

To ensure that the first blade 130 partially overlaps the second blade 140, the sum of the first predetermined angle and the third predetermined angle is greater than or equal to a first predetermined angle. For example, when the first preset angle is 180 degrees, the first set angle may be 60 degrees, and the second set angle may be 120 degrees; when the first preset angle is 270 degrees, the first set angle may be 135 degrees, and the second set angle may be 135 degrees; when the first preset angle is 360 degrees, the first set angle may be 200 degrees, and the second set angle may be 200 degrees, which is not described herein.

Accordingly, the difference between the shapes and sizes of the sheets being the same and the first sheet 130 and the second sheet 140 not overlapping each other and the first sheet 130 and the second sheet 140 not being connected to each other is that the second predetermined angle is greater than or equal to one half of the first predetermined angle. For example, when the first preset angle is 180 degrees, the second preset angle may be 90 degrees; when the first preset angle is 270 degrees, the second preset angle may be 150 degrees; when the first preset angle is 360 degrees, the second preset angle may be 180 degrees, which is not described herein.

The first sheet 130 and the second sheet 140 have a fourth positional relationship: in this case, in order to make the volumes of the first sheet 130 and the second sheet 140 small, as shown in fig. 11, the shape of the first sheet 130 is the same as the shape of the first sheet 130 in the first positional relationship, but the sizes may be different, in this embodiment. The shape of the second plate 140 is the same as the shape of the second plate 140 in the second positional relationship, but the size may be different. The arrangement is such that the overlapping portion of the first sheet 130 and the second sheet 140 may be circular, or may be: the cross section of the overlapping portion perpendicular to the rotation axis 110 is a surface swept by the base circle 121 rotated by a certain angle around the rotation axis 110, and the center rotation trajectory of the base circle 121 is a circular arc centered on a point where the rotation axis 110 intersects with the surface on which the cross section is located.

As shown in fig. 12, an embodiment of the present application further provides a polarization assembly 10 for a lens, where the polarization assembly 10 includes the polarizer 100 and the driving device 300 in any of the above embodiments, and the driving device 300 is connected to the polarizer 100 and drives the polarizer 100 to rotate around the rotation axis 110. In the production process of the polarization module 10 of the present application, the driving program of the driving device 300 may be designed so that the rotation of the polarizer 100 is more intelligent.

The driving device 300 includes a rotation shaft 310, and the rotation shaft 310 is connected to the polarizer 100, so that the rotation shaft 310 rotates the polarizer 100. The central axis of the rotating shaft 310 coincides with the rotation axis 110. At this time, the rotation of the polarizer 100 can be realized only by the driving device 300 without the driving of other transmission structures (such as transmission chains and transmission gears), so that the composition of the polarization component 10 is simpler, the occupied space is smaller, and the polarization component is suitable for being assembled into the camera module 20. Of course, in order to improve the stability of the rotation of the polarizer 100, the outer edge of the polarizer 100 may be rotated by a transmission structure such as a transmission chain or a transmission gear, and at this time, the central axis of the rotation shaft 310 may not coincide with the rotation axis 110.

In order to make the polarizer 100 not easily deformed by an external force and to ensure flatness of the polarizer 100, the polarization assembly 10 further includes a frame 200, and the frame 200 is disposed around an outer edge of the polarizer 100. The outer edge of the polarizer 100 may be attached and fixed to the frame 200, or may be wrapped and fixed by the frame 200. The frame 200 may be made of metal or plastic.

The rotation shaft 310 may be connected to the frame 200, so that the rotation shaft 310 drives the deflection plate to rotate through the frame 200, thereby further ensuring the flatness of the polarizer 100. The bezel 200 has a coupling through-hole 210 into which the rotation shaft 310 is inserted and fixed. In one embodiment, the outer edge of the frame 200 is circular, and the connecting through hole 210 is located at the center of the frame 200.

The rotating shaft 310 may be fixed in such a manner that glue is injected between the inner wall of the coupling through-hole 210 and the outer wall of the rotating shaft 310 to achieve fixation. The inner wall of the connecting through hole 210 may have a first thread, and the outer wall of the rotating shaft 310 may have a second thread, and the second thread is used to match the first thread, so that the rotating shaft 310 is connected to the nut after rotating through the connecting through hole 210, thereby achieving fixation. It is also possible to provide a first serration on the inner wall of the coupling through-hole 210 and a second serration on the outer wall of the rotary shaft 310, the second serration being adapted to be engaged with the first serration, so that the rotary shaft 310 is coupled to the nut after passing through the coupling through-hole 210, thereby achieving the fixing.

In order to integrate multiple functions of the polarization assembly 10 and improve user experience, the frame 200 may include a bearing structure 220, the bearing structure 220 has a receiving through hole 221, and the receiving through hole 221 is switchable to allow external light to pass through along with rotation of the frame 200, so that the external light directly enters the lens barrel 500. In one embodiment, the receiving hole 221 is circular, the size of the receiving hole 221 matches the lens barrel 500, and the distance from the center of the receiving hole 221 to the rotation axis 110 is equal to the distance from the center of the base circle 121 to the rotation axis 110.

As shown in fig. 13-14, the polarization assembly 10 may further include a light processing member 400, and the supporting structure 220 is configured to further support the light processing member 400 and make the light processing member 400 cover the receiving through hole 221, so that the external light enters the lens barrel 500 after being processed by the light processing member 400. The light processing member 400, i.e., the optical element, includes a filter and a lens. Similarly, the outer edge of the light processing member 400 may be attached and fixed to the outer circumferential surface of the receiving through hole 221, or may be wrapped and fixed by the inner wall of the receiving through hole 221.

Specifically, as shown in fig. 13 to 14, when the frame 200 is at rest, the polarizer 100 is located on the side of the lens barrel 500 close to the object, and the polarized light passing through the polarizer 100 enters the lens barrel 500. If the frame 200 is rotated, the polarization direction of the polarized light is changed. When the frame 200 is rotated, the light processing member 400 is switched to be located on a side of the lens barrel 500 close to the object, and the light passing through the light processing member 400 enters the lens barrel 500.

As shown in fig. 15, an embodiment of the present application further provides a lens barrel, where the lens barrel 500 includes a light inlet, and a lens is located in the lens barrel 500. The lens further includes the polarization assembly in any of the above embodiments, the rotation axis 110 is parallel to and spaced apart from the optical axis of the lens, and the polarizer 100 can cover the light inlet during the rotation stroke around the rotation axis 110, so that the light passing through the polarizer 100 enters the light inlet. By making the polarizer 100 parallel to the optical axis of the lens, the size of the base circle can be matched with the lens barrel 500, so that the volume of the polarizer 100 is minimized, and at the same time, the above arrangement makes the lens smaller and more suitable for being installed in a smaller space.

As shown in fig. 15, an embodiment of the present application further provides a camera module 20, where the camera module 20 includes the lens and the photosensitive chip in any of the above embodiments, and the photosensitive chip is configured to receive light passing through the lens and convert a light signal into an electrical signal. The image obtained by the camera module 20 is clearer, and the maintenance and replacement of the components are simpler and more convenient.

The driving unit 300 may be installed at one side of the lens barrel 500 in the radial direction to prevent the driving unit 300 from affecting the external light irradiated onto the polarizer 100.

An embodiment of the present application further provides an electronic device, which includes the camera module 20 in any of the above embodiments. The electronic device may be a camera, a computer, a mobile phone, etc. The electronic equipment has better image performance and is convenient to maintain.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (12)

1. A polarizing plate for a lens, the polarizing plate being adapted to be mounted at a mounting position of the lens,

the polarizer is configured to be rotatable about a rotation axis after being mounted in the mounting position, so that light rays entering the lens barrel of the lens after passing through the polarizer have different polarization directions, wherein the rotation axis is perpendicular to the polarizer and parallel to an optical axis of the lens, and the rotation axis is spaced apart from the optical axis.

2. The polarizing plate according to claim 1,

the cross section of the polaroid perpendicular to the rotation axis is a first section, the first section is a surface swept by a base circle rotating around the rotation axis by a first preset angle, the circle center rotation track of the base circle is an arc taking the intersection point of the rotation axis and the surface where the first section is located as the circle center, and the base circle is perpendicular to the rotation axis and does not intersect with the rotation axis.

3. The polarizing plate according to claim 2,

the value range of the first preset angle alpha is as follows: alpha is more than or equal to 90 degrees and less than or equal to 360 degrees.

4. The polarizing plate according to claim 2,

the polarizing plate includes a plurality of sheets, each of which is arranged around the rotation axis.

5. The polarizing plate according to claim 4,

the shape and the size of each sheet body are the same, the cross section, perpendicular to the rotation axis, of each sheet body is a second section, the second section is a surface swept by the base circle rotating around the rotation axis by a second preset angle, the circle center rotation track of the base circle is an arc taking the intersection point of the rotation axis and the surface where the second section is located as the circle center, and the value range of the second preset angle beta is as follows: 0 ° < β <360 °.

6. A polarizing assembly for a lens, comprising:

the polarizing plate according to any one of claims 1 to 5;

and the driving device is used for driving the polaroid to rotate around the rotating axis.

7. The polarization assembly of claim 6,

the drive means comprise a rotary shaft, the central axis of which coincides with the axis of rotation.

8. The polarization assembly of claim 7, further comprising:

a bezel disposed around an outer edge of the polarizer;

wherein, the axis of rotation is connected with the frame.

9. The polarization assembly of claim 8,

the frame comprises a bearing structure, the bearing structure is provided with a containing through hole, and the distance from the center of the containing through hole to the rotating axis is equal to the distance from the center of the basic circle to the rotating axis;

the bearing structure is configured to further bear a light processing piece and enable the light processing piece to cover the accommodating through hole, so that external light can enter the lens barrel through the light processing piece and the accommodating through hole;

wherein, the light processing piece comprises a filter and a lens.

10. A lens barrel characterized by comprising:

a lens barrel including a light entrance;

a lens located within the lens barrel;

the polarization assembly of any one of claims 6 to 9, wherein the rotation axis is parallel to and spaced apart from an optical axis of the lens, and the polarizer covers the light inlet in a rotational stroke of rotation about the rotation axis, so that light passing through the polarizer enters the light inlet.

11. The utility model provides a module of making a video recording which characterized in that includes:

the lens barrel as claimed in claim 10;

and the photosensitive chip is used for receiving the light rays passing through the lens and converting light ray signals into electric signals.

12. An electronic device, comprising:

the camera module of claim 11.

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