CN114785917A - Camera module and electronic equipment - Google Patents

Abstract

The application discloses module and electronic equipment make a video recording, the module of making a video recording, including lens cone, lens group, polarization modulation spare and image sensor, the lens cone has the light passageway, and the lens group sets up at the lens cone and lies in the light passageway, and polarization modulation spare is located the edge that the lens was organized and is located the light passageway, and image sensor locates the light-emitting side of a plurality of lenses, and image sensor includes the polarization pixel, and the polarization direction of polarization pixel and polarization modulation spare is different.

Description

Camera module and electronic equipment

Technical Field

The application belongs to the technical field of image acquisition, and particularly relates to a camera module and an electronic device.

Background

In the related art, the diversification and miniaturization of the lens provide wider functions and applications for the lens on a mobile phone platform. But, in contrast, the limitations and requirements on the optical and structural design of the lens itself are also increased, thereby leading to a series of problems.

When the strong light source exists in the field of view of the lens or in a certain range outside the field of view, light emitted by the strong light source is reflected or scattered by the internal structure (structural part and lens) of the lens and then converged on the image sensor to form a point or a specific interference image.

In order to improve the imaging quality of the image sensor, attempts are often made to solve the serious interference image by improving the surface treatment of the structural member, fine-tuning the optical design, and optimizing the lens coating design, but the effect is very small.

Disclosure of Invention

The application aims at providing a camera module and electronic equipment, and solves the problem that stray light and ghost images reduce image quality at least.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a camera module, which includes:

a lens barrel having a light passage;

the lens group is arranged on the lens barrel and is positioned in the optical channel;

the polarization regulating piece is arranged in the lens group and is positioned at the edge of the optical channel;

the image sensor is arranged on the light emitting side of the lens group and comprises a polarization pixel, and the polarization directions of the polarization pixel and the polarization modulation piece are different.

In a second aspect, an embodiment of the present application provides an electronic device, including: a housing;

the module of making a video recording, the module of making a video recording for the module of making a video recording that provides according to above-mentioned first aspect, the module of making a video recording is installed on the casing.

In an embodiment of the present application, a camera module includes a lens barrel, a lens group, a polarization modulator, and an image sensor, wherein the lens barrel has a light channel for allowing light to propagate to the image sensor. The lens group is arranged in the lens cone and is positioned in the optical channel. The lens group comprises a plurality of lenses, and the lenses are sequentially arranged in the optical channel from the object side to the image side along the optical axis. Optionally, the lens barrel may provide structural support for the plurality of lenses.

The polarization modulation element is arranged in the lens group and located at the edge of the optical channel, interference light rays exist at the edge of the optical channel, and the polarization modulation element is located on a light path of the interference light rays. When the interference light passes through the polarization modulation element, the interference light is applied with a polarization state and converted into polarized light. The disturbing light includes stray light and/or ghost light.

The image sensor is arranged on the light emitting side of the lens group and comprises a polarization pixel, and the polarization directions of the polarization pixel and the polarization modulating piece are different. When ordinary light propagates to image sensor department can normally form an image, and when polarized light propagates to image sensor department, can be obstructed by the polarization pixel for polarized light can't form an image, and at this moment, the image that image sensor produced is for going to disturb the image, does not contain the interference image that disturbs light formation promptly. That is, the interference-free image is not interfered by (stray light and ghost image) any more, and the definition is high.

This application sets up polarization modulation spare on through the lens group to can carry out polarization modulation to disturbing light, make disturbing light not cause the influence to image sensor's formation of image, make image sensor have the ability of distinguishing parasitic light ghost image and effective formation of image, show the imaging definition who promotes image sensor.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a camera module according to a first embodiment of the present application;

FIG. 2 is a schematic view of a camera module according to a second embodiment of the present application;

fig. 3 is a schematic view of a camera module according to a third embodiment of the present application;

fig. 4 is a schematic view of a camera module according to a fourth embodiment of the present application;

FIG. 5 is a schematic diagram of an image sensor according to an embodiment of the present application;

FIG. 6 is a schematic diagram illustrating the passage of light at a polarization modulation element according to one embodiment of the present application;

fig. 7 shows a schematic structure diagram of a polarization pixel in an embodiment according to the application.

Reference numerals are as follows:

10 lens barrel, 10a light channel,

11 a lens, wherein the lens is provided with a plurality of lenses,

12 a partition, a 120 light-through port,

121 a first spacer, 122 a first spacer,

123 a second spacer, 124 a second spacer, 125 a third spacer,

13 polarization modulation member, 130 a first linear polarizer, 131 a second linear polarizer, 132 a light-passing opening, 133a first polarization plating layer, 133b second polarization plating layer,

14 an image sensor for a display device, the image sensor comprising a plurality of pixels,

140 polarized picture elements, 141 microlenses, 142 photodiodes, 143 linear polarizers, 144 unpolarized picture elements,

15 filter.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present application, 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 present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

The following describes an image pickup module and an electronic apparatus according to an embodiment of the present application with reference to fig. 1 to 7.

As shown in fig. 1, fig. 2, fig. 3, and fig. 4, a camera module according to some embodiments of the present application includes a lens barrel 10, a lens group, a polarization adjustment member 13, and an image sensor 14, the lens barrel 10 has a light channel 10a, the lens group is disposed in the lens barrel 10 and located in the light channel 10a, the polarization adjustment member 13 is disposed in the lens group and located at an edge of the light channel 10a, the image sensor 14 is disposed at a light emitting side of the lens group, the image sensor 14 includes a polarization pixel 140, and polarization directions of the polarization pixel 140 and the polarization adjustment member 13 are different.

In the embodiment of the present application, the camera module includes a lens barrel 10, a lens group, a polarization modulator 13 and an image sensor 14, wherein the lens barrel 10 has a light channel 10a, and the light channel 10a is used for allowing light to propagate to the image sensor 14. The lens group is disposed in the lens barrel 10, and the lens group is located in the optical channel 10 a. The lens assembly includes a plurality of lenses 11, and the lenses 11 are disposed in the optical channel 10a along the optical axis from the object side to the image side. Optionally, the lens barrel 10 may provide structural support for the plurality of lenses 11.

The polarization adjusting element 13 is disposed in the lens group, the polarization adjusting element 13 is located at an edge of the optical channel 10a, and an interference light exists at the edge of the optical channel 10a, that is, the polarization adjusting element 13 is located on a light path of the interference light. When the disturbing light passes through the polarization modulation element 13, the disturbing light is applied with a polarization state and converted into polarized light. The disturbing light includes stray light and/or ghost light.

The image sensor 14 is disposed on the light exit side of the lens group, the image sensor 14 includes a polarization pixel 140, and the polarization directions of the polarization pixel 140 and the polarization modulation element 13 are different. When the normal light propagates to the image sensor 14, the normal light will be imaged normally, and when the polarized light propagates to the image sensor 14, the polarized light will be blocked by the polarization pixel 140, so that the polarized light cannot be imaged, and at this time, the image formed by the image sensor 14 is an interference-free image, that is, an interference image formed by the interference light is not included. That is to say, the interference-free image is not interfered by (stray light and ghost image) any more, and the definition is high.

This application sets up polarization modulation spare 13 through the specific position department on the lens group to the cooperation sets up polarization pixel 140 on image sensor 14, thereby can carry out polarization modulation to disturbing light, makes disturbing light not cause the influence to image sensor 14's formation of image, makes image sensor 14 have the ability of distinguishing parasitic light ghost image and effective formation of image, is showing the imaging definition who promotes image sensor 14.

It should be noted that the image sensor 14 utilizes the photoelectric conversion function of the photoelectric device to convert the light on the photosensitive surface into an electrical signal proportional to the light image. The polarization pixel 140 can be used for a pixel that detects the polarization state of light.

It should be noted that, in the related art, as for the way of improving the surface treatment of the structural member, although the intensity of the stray light can be reduced to some extent, the stray light cannot be completely eliminated, and at the same time, there is a risk of causing a new stray light phenomenon; regarding the way of fine tuning the optical design, the performance of the modified optical system is sacrificed, and meanwhile, ghost images which can hardly be modified exist, for example, under the condition of incidence of a large-angle light source, four-time reflection ghost images generated inside the first lens of the main camera lens almost exist in all the main camera lenses of the mobile phone; as for the way of optimizing the coating design of the lens 11, although it is possible to increase the transmission performance of the lens 11 and reduce the reflection, there is a limit, and since the surface types of the lens 11 are various, it is difficult to achieve uniform coating for complicated surface types, resulting in unsatisfactory effects. And the module of making a video recording in this application, through adding polarization modulation piece 13 and set up polarization pixel 140 on image sensor 14, just can effectively eliminate parasitic light, ghost image and can cause the influence to the definition of formation of image, satisfy the image quality demand.

Optionally, the number of the polarization modulation elements 13 is one, the optical path of the interference light includes a parasitic light path and a ghost light path, and the polarization modulation elements 13 are disposed at specific positions where the parasitic light path and the ghost light path are concentrated, so that one polarization modulation element 13 applies polarization states to different optical paths of the interference light, the structure is simplified, and the cost is reduced.

Alternatively, the number of the polarization modulation elements 13 is at least two, and at least two polarization modulation elements 13 are disposed at intervals on the optical path of the disturbance light.

In this embodiment, when there are at least two strong light sources in the field of view of the camera module or in a certain range outside the field of view, then the light emitted by the strong light source will form interference light at least two different positions inside the camera module, and the corresponding polarization modulation members 13 are respectively disposed for the interference light at different positions, so that the polarization state can be accurately applied to each interference light, the interference light at different positions can be converted into polarization light, and no image can be formed on the image sensor 14 having the polarization pixel 140, thereby obtaining a interference-free image without stray light and ghost image influence, and effectively improving the imaging effect and definition of the camera module.

According to some embodiments of the present application, further, as shown in fig. 5 and 7, image sensor 14 also includes non-polarizing picture elements 144, and an array arrangement of polarizing picture elements 140.

In this embodiment, the image sensor 14 further includes non-polarizing pixels 144, the non-polarizing pixels 144 can form a conventional imaging system, the polarizing pixels 140 can form a polarized imaging system, and the image sensor 14, in combination of the non-polarizing pixels 144 and the polarizing pixels 140, forms an imaging system that combines the conventional imaging system and the polarized imaging system.

It is worth noting that the polarized pixels 140 and the non-polarized pixels 144 are arranged in the same layer.

The polarized light is filtered when the polarized light is transmitted to the polarized pixel 140, that is, the polarized light cannot be imaged at the image sensor 14, and the normal light can be normally imaged when the normal light is transmitted to the polarized pixel 140, but the normal light loses part of light intensity after passing through the polarized pixel 140, so that an interference-removed image can be obtained according to the polarized pixel 140, and the interference-removed image has the characteristics of low brightness and no parasitic light ghost image. If the image sensor 14 only includes the polarization pixel 140, although the parasitic ghost can be completely removed, the amount of incident light is greatly lost, which causes a problem that the brightness of the interference-removed image is too low.

When the polarized light is transmitted to the non-polarized pixel 144, and the normal light is transmitted to the non-polarized pixel 144 or the polarized pixel 140, normal imaging can be performed, and a conventional image can be obtained according to the non-polarized pixel 144, or the non-polarized pixel 144 and the polarized pixel 140, and the conventional image has the characteristics of high brightness and including a parasitic ghost image. That is, when light passes through the non-polarized image element 144, the loss of light intensity is small, and the non-polarized image element 144 can effectively ensure the amount of light entering the image sensor 14.

According to the traditional image and the interference-removed image, by means of some image quality definition evaluation methods and image analysis means, such as an energy gradient function, deep learning, defogging algorithm and the like, components of the parasitic light ghost image are screened and removed from the traditional image, and then high-brightness and high-definition imaging can be obtained.

Under the cooperation of the non-polarization pixel 144 and the polarization pixel 140, high-brightness and high-definition imaging can be obtained, and the imaging quality is further improved.

According to some embodiments of the present application, further, as shown in FIGS. 5 and 7, the number a of polarizing picture elements 140 and the number b of non-polarizing picture elements 144 satisfy 0.5(a + b) ≦ b ≦ 0.75(a + b).

In this embodiment, the number of the polarization pixels accounts for a smaller proportion of the total number of pixels in the image sensor 14, and the number of the non-polarization pixels 144 accounts for a larger proportion, because if the number of the polarization pixels 140 in the image sensor 14 is too large, although the parasitic ghost can be significantly removed, the amount of incident light is greatly lost, which causes the problem of low brightness of the interference-free image, so that the proportion of the polarization pixels 140 to the non-polarization pixels 144 needs to be equalized, and the amount of incident light of the image sensor 14 can be ensured, and the parasitic ghost can also be effectively removed.

Optionally, the number b of non-polarizing picture elements 144 is half to three-quarters of the total number (a + b) of picture elements of the image sensor 14.

According to some embodiments of the present application, further, as shown in fig. 7, the polarization pixel element 140 includes a microlens 141, a photodiode 142, and a linear polarizer 143, the photodiode 142 is disposed on a light emitting side of the microlens 141, and the linear polarizer 143 is disposed between the microlens 141 and the photodiode 142.

In this embodiment, the microlens 141 is used to focus the light, the photodiode 142 is used to convert the light into an electrical signal, and the linear polarizer 143 is used to filter the polarized light so that the polarized light does not reach the photodiode 142, i.e., the polarized light is not imaged on the photodiode.

It is noted that the main axis of the linear polarizer 143 is perpendicular to the main axis of the polarization modulation element 13, in which case it can be achieved that the polarization pixel element 140 filters the polarized light from the polarization modulation element 13, i.e. the polarized light does not reach the photodiode 142 and the polarized light is not imaged at the photodiode 142.

Alternatively, the non-polarizing pixel element 144 includes a microlens 141 and a photodiode 142. The light is guided into the photodiode 142 by the converging action of the microlens 141, and the imaging requirement is satisfied.

Optionally, the array of RGGB image sensors 14 includes 25% red, 50% green, 25% blue based on a conventional RGGB image sensor 14. The RGGB image sensor 14 includes a polarization pixel 140, and light collected by the microlens 141 passes through the linear polarizer 143 and finally reaches the photodiode 142, where photoelectric conversion and imaging are performed.

Based on the structure of the RGGB image sensor 14, the polarization modulator 13 only allows light in one direction of electric vector vibration to pass through, and absorbs light in the other direction, which is called the principal axis.

Similarly, for polarization pixel 140 of RGGB image sensor 14, linear polarizer 143 also has a principal axis, and in the case where the principal axis of polarization modulation element 13 and the principal axis of linear polarizer 143 are perpendicular to each other, the light passing through polarization modulation element 13 does not reach photodiode 142 of polarization pixel 140, i.e., the polarized light is not imaged.

According to some embodiments of the present application, further, as shown in fig. 1, 2, 3 and 4, the lens set includes a plurality of lenses 11 and a separator 12, the separator 12 is disposed on the plurality of lenses 11, the separator 12 has a light passing port 120, and the polarization modulator 13 is disposed on the separator 12.

In this embodiment, the plurality of lenses 11 are disposed in the optical channel 10a in order from the object side to the image side along the optical axis, and the spacer 12 is disposed on the plurality of lenses 11 for adjusting the gap between the lenses 11. Since the number of the lens 11 is plural, a group of adjacent lenses 11 in the plural lenses 11 can be in direct contact without providing the spacer 12, and the gap therebetween is 0. There is no direct contact between adjacent lenses 11 in another set of the plurality of lenses 11, and the gap between them is greater than 0 by the spacer 12. That is, when the number of the lenses 11 is n, the number of the spacers 12 is greater than 0 and equal to or less than n-1. The number of the separators 12 can be adjusted according to the setting requirements of the actual lenses 11. The light-through opening 120 is formed in the separating member 12, and the separating member 12 plays a role of separating adjacent lenses 11, and meanwhile, does not cause adverse effects on normal propagation of light.

Optionally, the spacer 12 comprises a spacer ring that can be used to position a plurality of lenses 11, i.e. to adjust the gap between adjacent lenses 11. Optionally, the spacer 12 further comprises spacers for blocking light and absorbing stray light at locations of the non-effective path of the lens 11.

The polarization modulation element 13 is disposed on the separating element 12 and/or the lens 11 and is located on the optical path of the disturbing light, and when the disturbing light passes through the polarization modulation element 13, the disturbing light is applied with a polarization state and converted into a polarized light. The disturbing light rays include stray light rays L1 and/or ghost light rays L2. It is noted that the stray light ray L1 is caused by reflection or scattering by the partition 12 and the mirror 11. Ghost image light L2 is caused by reflection between the lenses 11. That is, the stray light ray L1 and the ghost light ray L2 are formed without separating the spacer 12 and the mirror 11, and the polarization modulation element 13 is provided on the spacer 12 and/or the mirror 11, so that the stray light ray L1 and/or the ghost light ray L2 can be effectively eliminated.

Optionally, the number of lenses 11 includes 3, 4, 5, 6, 7, 8, etc.

In a specific embodiment, as shown in fig. 1 and 2, the polarization modulation element 13 includes a first linear polarizer 130, and the first linear polarizer 130 is disposed on an edge of the partition 12 near the light-passing port 120.

In this embodiment, a specific arrangement position of the polarization modulation element 13 is described, wherein the polarization modulation element 13 includes the first linear polarizer 130, the first linear polarizer 130 is arranged on the inner edge of the partition 12, and since the partition 12 has the light transmitting port 120, the first linear polarizer 130 is located in the light transmitting port 120, and the arrangement of the first linear polarizer 130 does not additionally increase the size of the camera module in the optical axis direction, and is suitable for the miniaturization trend of the camera module. The first linear polarizer 130 has a light passing port 132, and the light passing port 132 is used for passing the imaging light, so as to ensure that the imaging light propagates to the image sensor 14 as far as possible on the premise of satisfying the polarization modulation of the interference light.

Optionally, a first linear polarizer 130 is disposed on the inner edge of the spacer.

Optionally, the first linear polarizer 130 is bonded to the inner edge of the separator 12 using an adhesive.

Alternatively, when the light-passing cross section of the light-passing port 120 is circular, the partition 12 is a partition ring, and when the light-passing cross section of the light-passing port 132 is circular, the first linear polarizer 130 is a polarization ring, and the polarization ring is disposed at an inner ring of the partition ring.

It should be noted that, in the case where the first linear polarizer 130 is not provided, the light passing through the light admission port 120 includes disturbance light and image light. When the first linear polarizer 130 is disposed on the inner edge of the partition 12, the interference light is polarization-modulated, and at the same time, a portion of the imaging light passing through the light-passing opening 120 is also polarization-modulated by the first linear polarizer 130, for the portion of the imaging light, 50% of light intensity loss is generated, but no influence is caused except the decrease of the overall brightness of the picture on the final imaging effect. Wherein the degree of brightness reduction of the final image effect depends on the size of the first linear polarizer 130.

In the case that the area of the first linear polarizer 130 in the light passing opening 120 is relatively large and the light passing opening 132 is relatively small, the brightness is greatly affected, because relatively more imaging light passes through the first linear polarizer 130, and the brightness is reduced due to relatively large light intensity loss.

The area of the first linear polarizer 130 in the light transmitting port 120 is reasonably set, and when the size of the light transmitting port 132 is proper, the influence on the imaging light can be reduced on the basis of satisfying the polarization modulation of the interference light, so that the brightness cannot be greatly influenced.

As shown in fig. 6, the relative positions of the position a where the disturbing light passes through in a concentrated manner and the object light source B generally have a corresponding relationship in the imaging system, and the position of the light source B in the object generally and the position a where the disturbing light passes through in a concentrated manner are in a symmetrical relationship with each other about the center of the optical axis (i.e., the center of the light passing opening 132 in the figure). It should be noted that the shape of the region a through which the disturbance light is concentrated is not limited to a circle, and may be an ellipse, a circular arc, or the like.

It should be noted that the actual size of the first linear polarizer 130 is determined by the area of the area a where the interfering light passes through in a concentrated manner, and referring to several kinds of parasitic light path schematic diagrams commonly seen in the camera module, a point of the parasitic light ghost in the imaging system of the lens is located at the aperture edge of the light channel 10a, or the propagation path of the interfering light is close to the clear aperture edge, so that the polarization modulation component 13 is added at the position where the interfering light passes through in a concentrated manner, that is, at the position close to the inner edge of the partition 12, so as to implement polarization modulation on the interfering light, and also reduce the brightness image imaged on the system to the lowest.

In addition, for the interference light rays at different positions, the polarization modulators 13 can be reused at different positions, and when the polarization directions of the polarization modulators 13 are consistent, the repeated structure does not cause additional light intensity influence.

Further, as shown in fig. 1 and 2, the partition 12 includes a first spacer 121 and a first spacer 122, the first spacer 122 is stacked with the first spacer 121, and the first linear polarizer 130 is disposed on an edge of the first spacer 122 near the light passing port 120.

In this embodiment, the spacer 12 includes a first spacer 121 and a first spacer 122, the first spacer 122 being disposed in a stack with the first spacer 121, wherein the first spacer 121 mainly serves to position the lenses 11, adjusting the gap between adjacent lenses 11. The first spacer 122 is used to block and absorb stray light at the position of the non-effective diameter of the lens 11, and the first linear polarizer 130 is disposed on the edge of the first spacer 122 near the light-passing port 120, so as to more effectively perform polarization modulation on the region where the interfering light rays intensively pass through.

In a specific embodiment, as shown in fig. 3, the polarization modulation element 13 includes a second linear polarizer 131, and the second linear polarizer 131 is stacked with the spacer 12. The second linear polarizer 131 has a light-passing port 132 communicating with the light-passing port 120, and the diameter of the light-passing port 132 is smaller than that of the light-passing port 120.

In this embodiment, explanation is made on a specific arrangement position of the polarization modulation member 13, wherein the polarization modulation member 13 includes the second linear polarizing plate 131, and the second linear polarizing plate 131 is stacked on the side of the partition 12 in the optical axis direction. Alternatively, the second linear polarizer 131 is stacked on the light entrance side of the partition 12. Alternatively, the second linear polarizer 131 is stacked on the light exit side of the partition 12. The second linear polarizer 131 has a light passing port 132 communicating with the light passing port 120, and a diameter D2 of the light passing port 132 is smaller than a diameter D1 of the light passing port 120, that is, the first portion of the second linear polarizer 131 is stacked on one side of the partition 12, alternatively, the first portion of the second linear polarizer 131 may be stacked between the partition 12 and the lens 11, or may be stacked between two partitions 12. The first portion of second linear polarizer 131 is used for the location installation for second linear polarizer 131 can assemble inside the module of making a video recording steadily, and positional stability is better, and the preparation degree of difficulty is little. Meanwhile, a second portion of the second linear polarizer 131 is exposed with respect to the inner edge of the spacer 12, and the second portion of the second linear polarizer 131 is used to apply a polarization state to the interference light.

According to some embodiments of the present application, further, as shown in fig. 4, the separator 12 includes a second spacer 124 and a third spacer 125 disposed at intervals. The polarization modulation element 13 includes a first polarization plating layer 133a and a second polarization plating layer 133b, the first polarization plating layer 133a being provided on a surface of the second spacer 124 facing the third spacer 125; second polarization plating layer 133b is provided on the surface of third spacer 125 facing second spacer 124, and the polarization directions of first polarization plating layer 133a and second polarization plating layer 133b coincide.

In this embodiment, the polarization modulation element 13 comprises a polarization coating, which is provided on the spacers 12, and the interference light is reflected in the polarization coating and converted into polarized light. Optionally, the polarization coating is disposed on the spacer of the spacer 12, which does not affect the imaging light in the imaging system, and can effectively affect the problem of stray light in the interference light.

Wherein second separator 124 and third separator 125 have inner surfaces close to each other, and first polarization plating layer 133a and second polarization plating layer 133b are provided on the inner surfaces of second separator 124 and third separator 125, respectively. Wherein the interference light can be applied with a polarization state on the first and second polarization plating layers 133a and 133b, finally forming polarized light.

Optionally, a second spacer 123 is disposed between second spacer 124 and third spacer 125. Alternatively, the second spacer 124 is disposed on the light incident side of the second spacer 123, and the third spacer 125 is disposed on the light emergent side of the second spacer 123.

Optionally, as shown in fig. 1, fig. 2 and fig. 3, the camera module further includes a filter 15, the filter 1515 is disposed on the light-entering side of the image sensor 14, and the filter 15 is used for filtering an infrared band in light, so as to block infrared rays from passing through the image sensor 14 and causing picture distortion.

According to some embodiments of the present application, an electronic device includes a housing and a camera module provided in any of the foregoing embodiments, wherein the camera module is mounted on the housing.

The electronic equipment provided by the application comprises the camera module provided by any design, so that all beneficial effects of the camera module are achieved, and the description is omitted.

Alternatively, electronic devices such as mobile terminals like mobile phones, wearable devices, tablet computers, laptop computers, mobile computers, handheld game consoles, video recorders, camcorders, radios, radio recorders, compact disc players, and the like.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

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

a lens barrel having a light channel;

the lens group is arranged on the lens barrel and is positioned in the optical channel;

the polarization adjusting part is arranged in the lens group and is positioned at the edge of the optical channel;

the image sensor is arranged on the light emitting side of the lens group and comprises a polarization pixel, and the polarization direction of the polarization pixel is different from that of the polarization modulation piece.

2. The camera module of claim 1, wherein the image sensor further comprises:

the non-polarization pixel and the polarization pixel are arranged in an array.

3. The camera module of claim 2,

the number a of the polarization pixels and the number b of the non-polarization pixels meet the requirement that b is more than or equal to 0.5(a + b) and less than or equal to 0.75(a + b).

4. The camera module of claim 1, wherein the polarizing pixel element comprises:

a microlens;

the photodiode is arranged on the light-emitting side of the micro lens;

a linear polarizer located between the microlens and the photodiode.

5. The camera module of any of claims 1-4, wherein the lens assembly comprises:

a plurality of lenses;

and a partition provided on the plurality of lenses, the partition having a light passing port, the polarization modulation member being provided on the partition.

6. The camera module of claim 5, wherein the polarization modulator comprises:

and the first linear polarizer is arranged on the edge of the separator close to the light through port.

7. The camera module of claim 6, wherein the spacer comprises:

a first space ring;

the first spacer is stacked with the first space ring, and the first linear polarizer is arranged on the edge, close to the light through opening, of the first spacer.

8. The camera module of claim 5, wherein the polarization modulator comprises:

a second linear polarizer stacked with the separator;

the second linear polarizer is provided with a light passing port communicated with the light passing port, and the diameter of the light passing port is smaller than that of the light passing port.

9. The camera module of claim 5,

the separator comprises a second spacer and a third spacer which are arranged at intervals;

the polarization modulation member includes:

a first polarization plating layer provided on a surface of the second separator facing the third separator;

and the second polarization plating layer is arranged on the surface of the third spacer facing the second spacer, and the polarization directions of the first polarization plating layer and the second polarization plating layer are consistent.

10. An electronic device, comprising:

a housing and a camera module according to any one of claims 1 to 9, the camera module being mounted on the housing.

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