WO2021226801A1

WO2021226801A1 - Imaging apparatus and mobile terminal

Info

Publication number: WO2021226801A1
Application number: PCT/CN2020/089655
Authority: WO
Inventors: 杨承修; 游琮伟; 张升云
Original assignee: 南昌欧菲华光科技有限公司
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-11-18

Abstract

Provided in the present application is an imaging apparatus, comprising: a circuit board; at least one camera module arranged on one side of the circuit board; a switching module arranged on the side of the camera module furthest from the circuit board, the switching module comprising at least one optical element; a stepper motor connected to the switching module and used for driving the switching module to rotate; and a motor drive circuit electrically connected to the circuit board and used for driving the stepper motor to thereby control the relative position of the at least one optical element relative to the at least one camera module. The present imaging module can precisely control the angle of rotation of the stepper motor and improve the diversification of image effects. Also provided in the present application is a mobile terminal comprising the imaging apparatus.

Description

Imaging device and mobile terminal

Technical field

This application relates to the field of imaging technology, in particular to an imaging device and a mobile terminal.

Background technique

At present, in order to meet different photographing needs of users, mobile terminals such as mobile phones can be equipped with a filter switch, which can drive two filters with different functions to switch. However, this filter switch can only switch two filters.

In order to solve this problem, the prior art discloses a stepping glass sheet switching module, which includes a fixed seat on which a stepping motor is installed and a movable piece is slidably installed. A plurality of glass sheets arranged in sequence along the sliding direction of the fixed sheet are fixed on the sheet, transmission teeth are processed on the edge of the movable sheet, and the stepping motor is connected to the transmission teeth through a transmission gear to drive the movable sheet to move , So as to meet the switching between more than two glass sheets.

However, in the process of realizing the present application, the inventor found that the prior art has at least the following problems: the existing filter switch or stepped glass sheet switching module can only drive the glass sheet to reciprocate in a single direction, The angle of the glass sheet cannot be adjusted, and the glass sheet cannot be switched to any number of positions.

Summary of the invention

In view of the above, it is necessary to provide an imaging device and a mobile terminal to solve the above problems.

An embodiment of the present application provides an imaging device, including:

Circuit board

At least one camera module arranged on one side of the circuit board;

A switch module, which is arranged on a side of the camera module away from the circuit board, the switch module includes at least one optical element, and the optical element is at least one of a lens and a filter;

A stepping motor connected to the switching module and used for driving the switching module to rotate; and

The motor drive circuit is electrically connected to the circuit board and used to drive the stepping motor, thereby controlling the relative position of the at least one optical element with respect to the at least one camera module.

The imaging device of the above embodiment drives the stepping motor to rotate through the motor drive circuit, so that the switch module can be rotated so that the optical element can be selectively overlapped with the camera module, and the motor drive circuit can precisely control the rotation angle of the switch module, so that The optical components are adjusted to a number of different positions to achieve different image effects. Therefore, the above-mentioned imaging device solves the problem that the existing filter switch cannot adjust the angle of the glass sheet and has fewer switching positions, thereby improving the diversification of image effects.

In some embodiments, the stepper motor includes:

shell;

The drive shaft is arranged in the housing and connected to the switching module;

A magnet connected to the drive shaft;

The coil assembly is arranged in the housing and includes multiple sets of coils, and the coil assembly is used to drive the drive shaft to rotate after being energized; and

The motor pins are connected to the circuit board.

Since the stepper motor is connected to the circuit board through the motor pins, the stepper motor and the camera module can be controlled at the same time through the connector of the circuit board to achieve the best image effect.

In some embodiments, the motor drive circuit is configured to receive an instruction signal of the rotation position of the stepper motor and output a pulse signal to the stepper motor to drive the stepper motor to rotate.

The motor drive circuit precisely controls the rotation direction and rotation angle of the stepping motor by outputting a pulse signal, thereby improving the movement precision of the stepping motor.

In some embodiments, the motor drive circuit is also used to receive the position detection signal of the stepping motor, and output to the stepping motor again according to the deviation between the position detection signal and the instruction signal Pulse signal. The motor drive circuit can further precisely control the rotation angle of the stepping motor to meet the high-precision requirements of the imaging device. In some embodiments, the step angle is equal to or less than 5 degrees, thereby encrypting the number of steps of the stepping motor and increasing the position where the optical element can stay.

In some embodiments, the switching module further includes a rotating body, and a central portion of the rotating body is provided with a shaft center;

The rotating body is connected with the stepping motor, and at least one optical element is installed on the rotating body. Therefore, the rotating body can drive one or more optical elements to rotate at the same time.

In some embodiments, the outer shape of the rotating body is circular; at least one of the optical elements is a polarizer and extends along the circumferential direction of the rotating body.

The polarizer can eliminate the phenomenon of light reflection outside the target in nature, and each degree of the polarizer can have a different polarization effect to adapt to a variety of shooting conditions.

In some embodiments, the switching module can rotate around a rotation axis;

The polarizer has a cross-section perpendicular to the axis of rotation, the cross-section is a plane swept by a base circle that rotates around the axis of rotation by a predetermined angle, and the center of the base circle rotates around the axis of rotation. The point where the axis intersects the surface where the cross section is located is the arc of the center of the circle, wherein the base circle is perpendicular to the rotation axis and does not intersect the rotation axis.

The polarizer of the above-mentioned shape has a small volume, thereby reducing the production cost of the polarizer.

In some embodiments, the preset angle is α, and the value range of the preset angle α is:

α≥90°.

The value range of the aforementioned preset angle enables the polarization direction of the light in the camera module to be any angle, which is suitable for different external environments and user requirements.

90°≤α≤180°.

When the preset angle is 180°, the polarizer can correspond to two camera modules.

In some embodiments, the drive shaft of the stepping motor is perpendicular to the circuit board;

, The shaft part is connected with the drive shaft of the stepping motor.

Therefore, the rotating body can be connected to the drive shaft of the stepping motor through the shaft core portion to rotate together with the drive shaft.

The peripheral edge of the rotating body is provided with a toothed portion, and the imaging device further includes a transmission gear connected to the drive shaft of the stepping motor and meshed with the toothed portion.

Since the stepping motor drives the rotating body to rotate through the transmission gear, it is convenient to set the position of the stepping motor flexibly.

In some embodiments, the drive shaft of the stepper motor is parallel to the circuit board;

The peripheral edge of the rotating body is provided with a toothed portion, and the imaging device further includes a worm gear connected to the drive shaft of the stepping motor and meshed with the toothed portion.

Since the stepping motor drives the rotating body to rotate through the worm gear, it is convenient to set the position of the stepping motor flexibly.

In some embodiments, the number of the camera module is two, the switch module includes two optical elements, and the two optical elements are a polarizer and a macro lens, respectively.

The polarizer can eliminate the reflection phenomenon outside the target in nature, and can be stacked on two camera modules at the same time; the macro lens can achieve the effect of partial magnification.

In some embodiments, the number of the camera module is three, the switch module includes three of the optical elements, and the three optical elements are an infrared filter, an ultraviolet filter, and a dimming film. piece.

In the above-mentioned embodiment, the three optical elements are respectively an infrared filter, an ultraviolet filter and a dimming film to realize the infrared effect, the ultraviolet effect and the dimming effect respectively; when in use, the three optical elements can be rotated and combined respectively Each corresponds to a corresponding camera module.

In some embodiments, the rotating body includes a flat portion, and the three optical elements and the flat portion are all fan-shaped and arranged around the axis portion.

In some embodiments, the number of the camera module is four, the switch module includes three of the optical elements, and the three optical elements are an infrared filter, an ultraviolet filter, and a dimming film. piece.

In the above embodiment, the three optical elements are respectively an infrared filter, an ultraviolet filter and a dimming film, to cooperate with one camera module to achieve the infrared effect, the ultraviolet effect and the dimming effect, and the other camera module obtains The original shooting effect.

An embodiment of the present application also proposes a mobile terminal, including: a housing; and the imaging device as described in any of the above embodiments, the imaging device being provided in the housing.

Since the imaging device in the mobile terminal includes a switching module, a stepping motor, and a motor drive circuit, when the motor drive circuit drives the stepping motor to rotate, the switching module can rotate so that the optical element can be selectively overlapped with the camera module, Thereby providing corresponding optical effects for the camera module to enhance the image effect. The motor drive circuit can precisely control the rotation angle of the switching module, and adjust the optical elements to a number of different positions to achieve different image effects. Therefore, the above-mentioned mobile terminal solves the problem that the existing filter switch cannot adjust the angle of the glass sheet and has fewer switching positions, thereby improving the diversification of image effects.

In some embodiments, the number of the camera module is multiple;

The stepping motor is arranged between the plurality of camera modules or on one side of the plurality of camera modules.

The switching module can provide corresponding optical effects for a plurality of camera modules respectively, and the above-mentioned imaging device can be adapted to the structure of a variety of mobile terminals, and has a wide range of applications.

Description of the drawings

FIG. 1 is a three-dimensional schematic diagram of an imaging device according to a first embodiment of the present application.

FIG. 2 is a three-dimensional exploded schematic diagram of the imaging device shown in FIG. 1.

FIG. 3 is a schematic diagram of projection of a stepping motor in the imaging device shown in FIG. 2.

Fig. 4 is a pulse waveform diagram of a stepping motor in the imaging device shown in Fig. 2.

FIG. 5 is a three-dimensional schematic diagram of the imaging device according to the second embodiment of the present application.

FIG. 6 is a three-dimensional exploded schematic diagram of the imaging device shown in FIG. 5.

FIG. 7 is a three-dimensional schematic diagram of an imaging device according to a third embodiment of the present application.

FIG. 8 is a three-dimensional exploded schematic diagram of the imaging device shown in FIG. 7.

FIG. 9 is a three-dimensional schematic diagram of a mobile terminal according to a fourth embodiment of the present application.

FIG. 10 is a three-dimensional exploded schematic diagram of the imaging device in the mobile terminal shown in FIG. 9.

FIG. 11 is a three-dimensional schematic diagram of a mobile terminal according to a fifth embodiment of the present application.

FIG. 12 is a three-dimensional exploded schematic diagram of the imaging device in the mobile terminal shown in FIG. 11.

FIG. 13 is a three-dimensional schematic diagram of a mobile terminal according to a sixth embodiment of the present application.

FIG. 14 is a three-dimensional exploded schematic diagram of the imaging device in the mobile terminal shown in FIG. 13.

Symbol description of main components

Imaging device 100

Circuit board 10

Installation side 11

Connection Department 12

Camera module 20

Image acquisition sensor 21

Lens installation module 22

Lens 23

The first flexible circuit board 24

Switch module 30

Rotating body 31

Rotation axis 311

Axis Department 312

Installation Department 314

Through hole 316

Tooth shape department 318

Optical components 32

Basic circle 321

Stepper motor 40

Shell 41

Drive shaft 42

Magnet 43

Coil components 44

Motor connection 45

The second flexible circuit board 46

Electronic component base 47

Motor drive circuit 50

Transmission gear 60

Worm gear 70

Shell 200

Mobile terminal 1000

Detailed ways

In order to make the purpose, technical solutions, and advantages of this application clearer and clearer, the following further describes the application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the application, and are not used to limit the application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to another element or a centrally arranged element may exist at the same time. When an element is considered to be "disposed on" another element, it can be directly disposed on another element or a centrally disposed element may also exist at the same time.

It should be further noted that, in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements , And also include other elements not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element.

Please refer to FIGS. 1 and 2 at the same time. The first embodiment of the present application provides an imaging device 100, which includes a circuit board 10, a camera module 20, a switching module 30, a stepping motor 40, and a motor driving circuit 50.

The camera module 20 is arranged on one side of the circuit board 10, and the switch module 30 is arranged on the side of the camera module 20 away from the circuit board 10, and the switch module 30 includes a rotating body 31 and two switches arranged on the rotating body 31. The optical element 32 is used to provide a specific optical effect for the camera module 20. The rotating body 31 of the switching module 30 is connected to the stepping motor 40, and the stepping motor 40 is connected to the switching module 30 for driving the switching module 30 to rotate; the motor driving circuit 50 is electrically connected to the circuit board 10 and used for The stepping motor 40 is driven to control the relative position of the at least one optical element 32 with respect to the at least one camera module 20.

The imaging device 100 drives the stepping motor 40 to rotate through the motor drive circuit 50, and the switching module 30 can rotate synchronously so that the two optical elements 32 can be selectively overlapped with the camera module 20, that is, the two optical elements 32 respectively correspond to the camera module. The direction of the optical axis of the group 20 provides corresponding optical effects for the camera module 20 to enhance the image effect. The motor driving circuit 50 can precisely control the rotation angle of the switching module 30, so that the two optical elements 32 are adjusted to a plurality of different positions respectively, so as to achieve different image effects. Therefore, the above-mentioned imaging device 100 solves the problem that the conventional filter switch cannot adjust the angle of the glass sheet and has fewer switching positions, thereby improving the diversification of image effects.

Specifically, the circuit board 10 is used to carry various components of the imaging device 100. In this embodiment, the circuit board 10 has a mounting surface 11, and the camera module 20, the stepping motor 40 and the motor drive circuit 50 are all disposed on the mounting surface 11. The circuit board 10 is further provided with a connecting portion 12, and the connecting portion 12 can be electrically connected to an imaging processing device or other control device provided outside the imaging device 100. The circuit board 10 can be provided with a reinforcing steel plate on the surface opposite to the mounting surface 11, and the reinforcing steel plate is used to strengthen the strength of the circuit board 10. The structure and arrangement of the connecting portion 12 and the reinforcing steel plate can be selected according to the needs of the applicable existing technology, which will not be repeated here.

The camera module 20 includes an image acquisition sensor 21, a lens mounting module 22 and a lens 23 which are sequentially arranged on the circuit board 10.

The image acquisition sensor 21 is used for image acquisition and pickup. The image acquisition sensor 21 is disposed on the mounting surface 11 of the circuit board 10 and is electrically connected to the circuit board 10. In this embodiment, the image acquisition sensor 21 may be a CMOS (Complementary Metal Oxide Semiconductor) sensor or a CCD (Charge-coupled Device) sensor.

The lens mounting module 22 is used for mounting the lens 23 and constitutes an accommodating space for placing the image acquisition sensor 21. In this embodiment, the lens mounting module 22 adopts a lens holder, which is generally block-shaped and has a through cavity provided on it. The lens holder is fixedly connected to the mounting surface 11 of the circuit board 10.

The lens 23 includes at least one lens, and the lens is made of a resin lens or a glass lens.

In one embodiment, the camera module 20 further includes a first flexible circuit board 24, and the image acquisition sensor 21 is electrically connected to the circuit board 10 through the first flexible circuit board 24.

The optical element 32 can be at least one of a lens and a filter. The lens includes a convex lens, a concave lens, a liquid lens, and other lenses that change the characteristics of the incident light path. The filter includes an optical polarizer of any shape, a light reducing lens, Infrared filters, ultraviolet filters, visible filters, high-pass filters and other filters that eliminate the nature of the incident light (wavelength, frequency, amplitude). The switching module 30 can select and combine the types and quantities of the optical elements 32 according to requirements, so as to realize the diversification of image effects.

The shape of the switching module 30 can be circular, polygonal, gear-shaped or irregular.

In this embodiment, the rotating body 31 has a circular or elliptical structure. The center of the rotating body 31 is provided with an axis portion 312. Two optical elements 32 are arranged around the axis portion 312. Under different implementation conditions, switch The structure of the optical element 32 of the module 30 can be different. For example, one of the optical elements 32 has a C-shaped structure, and the other optical element 32 has a circular structure; of course, the optical element 32 can also be one, which itself Different parts of the structure have different filter structures.

In this embodiment, one optical element 32 is a polarizer, and the polarizer extends along the circumferential direction of the rotating body 31. The angle of the polarizer can be 180 degrees or more, and each degree has a different polarization effect to adapt to a variety of shooting conditions. The stepping motor 40 can drive any position of the polarizer corresponding to the direction of the optical axis of the camera module 20, so that the polarizer provides different polarization effects. Polarizers can eliminate natural light reflections from objects other than objects. For example, to eliminate water reflections and window reflections, the polarizers need to be rotated to different angles. In addition, the user may need to rotate the polarizers at different angles when the user picks up the mobile phone.

Specifically, the switching module 30 can rotate around the rotation axis 311. In this embodiment, the rotation axis 311 is located at the center of the shaft portion 312. The rotation axis 311 is perpendicular to the rotating body 31 and parallel to the optical axis of the lens 23, and the rotation axis 311 and the optical axis are separated from each other.

The polarizer has a cross section perpendicular to the axis of rotation 311, the cross section is a plane swept by the base circle 321 rotating a predetermined angle around the axis of rotation 311, and the center of the base circle 321 rotates along the axis of rotation 311 and the axis of rotation. The intersection point of the surface where the cross section is located is the arc of the center of the circle, wherein the base circle 321 is perpendicular to the rotation axis 311 and does not intersect the rotation axis 311. The preset angle is not zero. The arc refers to the part between any two points on the circle. The "two points" may or may not overlap. Compared with the polarizers of other shapes, the polarizers of the above-mentioned shapes are smaller in volume, thereby further reducing the production cost of the polarizers. The size of the base circle 321 can be matched with the lens 23 to minimize the volume of the polarizer.

The value range of the preset angle α is set according to the external environment and user requirements. In an embodiment, the preset angle α is greater than or equal to 90°, for example, α may be 90°, 180°, 270°, or 360°. The value range of the aforementioned preset angle enables the polarization direction of the light in the camera module to be any angle, which is suitable for different external environments and user requirements.

Preferably, the value range of the preset angle α is: 90°≤α≤180°. When the preset angle is 180°, the polarizer can correspond to two camera modules.

As shown in Figure 2, α is 180°.

The other optical element 32 is spaced apart from the above-mentioned optical element 32, and it can be a convex lens, a concave lens, a liquid lens, or other lenses that have the characteristics of changing the path of the incident light. In this embodiment, the lens can be a microlens, and the macro lens can achieve a partial magnification effect. The macro lens is circular, which matches the size of the lens 23 in the camera module 20.

In this embodiment, the rotating body 31 is provided with a mounting portion 314 at a position corresponding to the optical element 32, and the optical element 32 is fixed in the mounting portion 314. In this embodiment, the two mounting portions 314 are spaced through holes, and the two optical elements 32 are respectively disposed in the two through holes. Of course, the mounting portions 314 can also be two independent mounting grooves. It can be understood that when the optical element 32 is single, the mounting portion 314 is also correspondingly provided as a through hole or a mounting groove adapted to the optical element 32.

The switch module 30 is further provided with a through hole 316, the through hole 316 is circular and is adapted to the size of the lens 23. When the through hole 316 corresponds to the camera module 20, the switching module 30 does not change the optical characteristics of the camera module 20, and the camera module 20 maintains the original shooting effect.

In this embodiment, the material of the rotating body 31 can be metal or plastic. Preferably, the rotating body 31 is made of a transparent material, but it is not limited to this. The rotating body 31 can also be made of an opaque material, and a through hole may be provided in the part corresponding to the optical element 32.

The rotating body 31 is connected to the stepping motor 40, and the shaft portion 312 of the rotating body 31 can be connected to the stepping motor 40. In this embodiment, the shaft portion 312 is a through hole; in other embodiments, the rotating body 31 can also be connected to the stepping motor 40 through other parts.

It can be understood that the rotating body 31 can also be omitted, and the optical element 32 can be directly connected to the stepping motor 40.

2 and 3 at the same time, the stepper motor 40 is used to convert electrical pulses into angular displacement. The stepping motor 40 is arranged on the mounting surface 11 of the circuit board 10 and is arranged adjacent to the camera module 20. In one embodiment, the stepping motor 40 can be fixed on the circuit board 10 by fixing screws.

The stepping motor 40 includes a housing 41, a drive shaft 42, a magnet 43, a coil assembly 44 and motor pins 45. The drive shaft 42 is partially arranged in the housing 41 and connected to the switching module 30. The magnet 43 is connected to the drive shaft 42; the coil assembly 44 is arranged in the housing 41 and includes multiple sets of coils. The coil assembly 44 is used to drive the drive shaft 42 after being energized. Rotate; the motor pin 45 is connected to the circuit board 10 through the second flexible circuit board 46. Since the stepping motor 40 is connected to the circuit board 10 through the motor pins 45, the stepping motor 40 and the camera module 20 can be simultaneously controlled through the connecting portion 12 of the circuit board 10 to achieve the best image effect.

Among them, each group of coils is symmetrically arranged along the drive shaft 42. After the coil assembly 44 is energized, the coil assembly 44 generates an attractive force or a repulsive force on the magnet 43, and the positive and negative poles are alternately energized to make the drive shaft 42 rotate forward or backward.

In this embodiment, the drive shaft 42 of the stepping motor 40 is perpendicular to the circuit board 10, and the shaft portion 312 of the rotating body 31 is connected to the drive shaft 42 of the stepping motor, so that the switching module 30 is sleeved on the drive shaft. 42 to rotate together with the drive shaft 42.

The motor drive circuit 50 is used for receiving the instruction signal of the rotation position of the stepping motor 40 and outputting a pulse signal to the stepping motor 40 to drive the stepping motor 40 to rotate. The 50 motor drive circuits output pulse signals to precisely control the rotation angle and direction of the stepping motor 40, which improves the movement precision of the stepping motor 40 and meets the high-precision requirements of the imaging device 100.

When the stepping motor 40 receives a pulse signal sent by the motor drive circuit 50, the stepping motor 40 will rotate a fixed angle (called the "step angle") in the set direction, and the stepping motor 40 will rotate according to The fixed angle runs step by step. The angular displacement is controlled by controlling the number of pulses, so that the stepping motor 40 rotates by N times the step angle, where N is a positive integer greater than or equal to 1.

Preferably, the step angle is equal to or less than 5 degrees, thereby encrypting the number of steps of the stepping motor 40 and increasing the position where the optical element 32 can stay, thereby accurately driving the switching module 30 to rotate and improving the movement of the switching module 30 Accuracy. It can be understood that, in other embodiments, the step angle can also be set to other degrees greater than 5 degrees according to requirements.

The motor drive circuit 50 is also used to receive the position detection signal of the stepping motor 40, and output a pulse signal to the stepping motor 40 again according to the deviation between the position detection signal and the instruction signal, until the stepping motor 40 moves to the instruction signal s position. Therefore, the motor driving circuit 50 can precisely control the rotation angle of the stepping motor 40, which meets the high-precision requirements of the imaging device 100. It can be understood that the stepper motor 40 may be equipped with a position sensor for sensing the rotation position of the stepper motor 40 and send a position detection signal.

Please refer to FIG. 4 at the same time. FIG. 4 is a pulse waveform diagram of an example in an embodiment of this application. The pulse signal output by the motor drive circuit 50 to the stepping motor 40 is a double pulse signal.

For example, the motor drive circuit 50 first drives the stepper motor 40 to rotate to the stop position with a positive current pulse, and if the stop position exceeds the target position, it is changed to drive the stepper motor 40 with a negative current pulse to rotate in the opposite direction to the target position; If it is far away from the target position again, the stepping motor 40 is driven back to the target position with the pulse wave of the positive current, and repeated operations can control the movement accuracy of the stepping motor 40.

5 and 6 are the imaging device 100 according to the second embodiment provided by this application. Similar to the first embodiment, the imaging device 100 includes a circuit board 10, at least one camera module 20, a switching module 30, a stepping motor 40, and a motor drive circuit 50; the drive shaft 42 of the stepping motor 40 is in phase with the circuit board 10. vertical. The difference is that the peripheral edge of the rotating body 31 is provided with a toothed portion 318, and the imaging device 100 further includes a transmission gear 60. The transmission gear 60 is connected to the drive shaft 42 of the stepping motor 40 and meshes with the toothed portion 318, thereby stepping. The motor 40 drives the rotating body 31 to rotate through the transmission gear 60, which facilitates the flexible setting of the position of the stepper motor 40. For example, the stepper motor 40 is arranged on one side of the camera module 20, or is arranged among a plurality of camera modules 20. between.

In addition, in this embodiment, the shaft portion 312 is a rotating bearing, which can provide support for the optical element 32 and a degree of freedom of rotation.

The optical element 32 of this embodiment is a polarizer, which is fan-shaped and has an angle greater than 180 degrees; the part of the rotating body 31 except for the polarizer where the optical element 32 is not provided is a flat part, and the flat part does not change the corresponding camera module. For the optical effect of group 20, the flat part can also be a through hole. It can be understood that the above structure is only an exemplary embodiment, the optical element 32 may also be a filter of other types, and the number of the optical element 32 may also be multiple.

7 and 8 are the imaging device 100 in the third embodiment provided by this application. Similar to the second embodiment, the imaging device 100 includes a circuit board 10, at least one camera module 20, a switching module 30, a stepping motor 40 and a motor driving circuit 50, and a toothed portion 318 is provided on the periphery of the rotating body 31. The difference is that the drive shaft 42 of the stepping motor 40 is parallel to the circuit board 10, and the motor pins 45 are electrically connected to the circuit board 10 through an electronic component base 47; the imaging device 100 also includes a worm gear 70, a worm gear 70, and a stepper. The drive shaft 42 of the motor 40 is connected to and meshes with the toothed portion 318 of the rotating body 31, so that the stepping motor 40 drives the switching module 30 to rotate through the worm gear 70. Since the stepping motor 40 drives the rotating body 31 to rotate through the worm gear 70, it is convenient to set the position of the stepping motor 40 flexibly.

The rotating body 31 is provided with three optical elements 32 and a flat part 315. The flat part 315 may be a part of the rotating body 31 where the optical element 32 is not provided. Of course, the flat part 315 may also be a through hole. The three optical elements 32 and the flat light portion 315 are sequentially arranged around the circumference of the rotating body 31. In this embodiment, the three optical elements 32 and the flat light portion 315 are all fan-shaped and arranged around the axis portion 312. The angles of the three optical elements 32 are all 90 degrees. In one embodiment, the three optical elements 32 are an infrared filter, an ultraviolet filter, and a dimming mirror, respectively, to realize the infrared effect, the ultraviolet effect, and the dimming effect; it is understandable that the above structure is only an example. In an embodiment, the optical element 32 may also be a lens of another type of filter, and the number of the optical element 32 may also be one, two, or three or more.

The embodiments of the present application also propose a mobile terminal including a housing and the imaging device 100 of any one of the above embodiments, and the imaging device 100 is provided in the housing. Wherein, the number of camera modules 20 in the imaging device 100 may be one, two, three, four, or more than four.

FIG. 9 is a mobile terminal 1000 provided by the fourth embodiment of this application. The mobile terminal 1000 includes a housing 200, and the imaging device 100 is provided in the housing 200.

10, the imaging device 100 is similar to the first embodiment, and includes a circuit board 10, a camera module 20, a switching module 30, a stepping motor 40, and a motor driving circuit 50. The difference is that the number of camera modules 20 is two.

The stepping motor 40 is arranged between the two camera modules 20, and the switching module 30 is rotatably arranged on one side of the two camera modules 20. The switching module 30 includes two optical elements 32, and the two optical elements 32 are a polarizer and a macro lens, respectively. The polarizing plate can eliminate the reflection phenomenon from outside the target in nature. The angle of the polarizing plate is equal to or greater than 180 degrees, so that the polarizing plate can be stacked on two camera modules 20 at the same time to adjust the optical characteristics of the two camera modules 20 ; The macro lens can achieve the effect of partial magnification; the part without the optical element 32 does not change the original shooting effect.

FIG. 11 is a mobile terminal 1000 provided by the fifth embodiment of this application. The mobile terminal 1000 includes a housing 200, and the imaging device 100 is provided in the housing 200.

12, the imaging device 100 is similar to the second embodiment, and includes a circuit board 10, a camera module 20, a switching module 30, a stepping motor 40, and a motor driving circuit 50. The difference is that the number of camera modules 20 is three; the stepping motor 40 is arranged on one side of the three camera modules 20, and the switching module 30 is rotatably arranged on the three camera modules 20 away from the circuit board 1010 On the side.

In addition, in this embodiment, the rotating body 31 is provided with three optical elements 32 and one flat part 315, and the three optical elements 32 and the flat part 315 are respectively arranged around the circumference of the rotating body 31 in sequence. Specifically, the three optical elements 32 and the flat portion 315 are fan-shaped and arranged around the axis portion 312.

In this embodiment, the three optical elements 32 are all fan-shaped and the angles are all 90 degrees. In use, the three optical elements 32 can rotate respectively and correspond to a corresponding camera module 20 respectively.

In one embodiment, the three optical elements 32 are an infrared filter, an ultraviolet filter, and a dimming film, respectively, to realize the infrared effect, the ultraviolet effect, and the dimming effect; it is understandable that the above structure is only an example. In an embodiment, the optical element 32 may also be a lens of another type of filter, and the number of the optical element 32 may also be one, two, or three or more.

FIG. 13 is a mobile terminal 1000 provided by the sixth embodiment of this application. The mobile terminal 1000 includes a housing 200, and the imaging device 100 is provided in the housing 200.

Please refer to FIG. 14, the imaging device 100 is similar to the third embodiment, and includes a circuit board 10, a camera module 20, a switching module 30, a stepping motor 40 and a motor driving circuit 50. The difference is that the number of camera modules 20 is four.

The stepping motor 40 is arranged on one side of the four camera modules 20, and the switching module 30 is rotatably arranged on the side of the four camera modules 20 away from the circuit board 10.

In this embodiment, the rotating body 31 is provided with three optical elements 32 and one flat part 315, and the three optical elements 32 and the flat part 315 are respectively arranged around the circumference of the rotating body 31 in sequence. Specifically, the three optical elements 32 and the flat portion 315 are fan-shaped and arranged around the axis portion 312.

In this embodiment, the three optical elements 32 are all fan-shaped and the angles are all 90 degrees. In use, the three optical elements 32 can rotate respectively and correspond to one camera module 20, and the flat part 315 corresponds to another camera module 20.

In one embodiment, the three optical elements 32 are an infrared filter, an ultraviolet filter, and a dimming film, respectively, to cooperate with one camera module 20 to achieve the infrared effect, the ultraviolet effect, and the dimming effect, and the other camera module Group 20 obtains the original shooting effect; it can be understood that the above structure is only an example embodiment, the optical element 32 can also be a lens of other types of filters, and the number of optical elements 32 is not limited to three. .

It can be understood that, in the mobile terminal 1000 of other embodiments, the number, type, and shape of the optical elements 32 can be adjusted according to requirements.

Since the imaging device 100 in the mobile terminal 1000 includes a switching module 30, a stepping motor 40, and a motor driving circuit 50, when the motor driving circuit 50 drives the stepping motor 40 to rotate, the switching module 30 can rotate so that the optical element 32 can be rotated. It is selectively overlapped with the camera module 20 to provide corresponding optical effects for the camera module 20 to enhance the image effect. The motor drive circuit 50 can precisely control the rotation angle of the switching module 30 and adjust the optical element 32 to a plurality of different positions, thereby achieving different image effects. Therefore, the above-mentioned mobile terminal 1000 solves the problem that the existing filter switch cannot adjust the angle of the glass sheet and has fewer switching positions, thereby improving the diversification of image effects.

In addition, the optical element 32 can be adjusted according to requirements to enable the imaging device 100 to achieve different hybrid physical optical effects; the stepping motor 40 can be arranged between the multiple camera modules 20 or on one side of the multiple camera modules , So that the switching module 30 can provide optical effects for multiple camera modules 20; the cost of the stepping motor 40 is low, and the effect is stable; the imaging device 100 can be adapted to the structure of a variety of mobile terminals 1000, and has a wide range of applications .

For those skilled in the art, it is obvious that the present application is not limited to the details of the foregoing exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of this application is defined by the appended claims rather than the above description, and therefore it is intended to fall into the claims. All changes in the meaning and scope of the equivalent elements of are included in this application.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application and not to limit them. Although the application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the application can be Make modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present application.

Claims

An imaging device, characterized in that it comprises:

Circuit board

At least one camera module arranged on one side of the circuit board;

A switch module, arranged on a side of the camera module away from the circuit board, and the switch module includes at least one optical element;

A stepping motor connected to the switching module and used for driving the switching module to rotate; and

The motor drive circuit is electrically connected to the circuit board and used to drive the stepping motor, thereby controlling the relative position of the at least one optical element with respect to the at least one camera module.
5. The imaging device of claim 1, wherein the stepping motor comprises:

shell;

The drive shaft is partially arranged in the housing and connected to the switching module;

A magnet connected to the drive shaft;

The coil assembly is arranged in the housing and includes multiple sets of coils, and the coil assembly is used to drive the drive shaft to rotate after being energized; and

The motor pins are connected to the circuit board.
The imaging device according to claim 1 or 2, wherein the motor drive circuit is used to receive the instruction signal of the rotation position of the stepping motor and output a pulse signal to the stepping motor to drive the The stepper motor rotates.
The imaging device according to claim 3, wherein the motor drive circuit is further configured to receive a position detection signal of the stepping motor, and based on the deviation between the position detection signal and the instruction signal The pulse signal is output to the stepping motor again.
5. The imaging device of claim 1, wherein the switching module further comprises a rotating body, and a central part of the rotating body is provided with a shaft center;

The rotating body is connected with the stepping motor, and at least one optical element is installed on the rotating body.
5. The imaging device of claim 5, wherein the outer shape of the rotating body is circular; at least one of the optical elements is a polarizer and extends along the circumferential direction of the rotating body.
The imaging device according to claim 6, wherein:

The switching module can rotate around a rotation axis;

The polarizer has a cross-section perpendicular to the axis of rotation, the cross-section is a plane swept by a base circle that rotates around the axis of rotation by a predetermined angle, and the center of the base circle rotates around the axis of rotation. The point where the axis intersects the surface where the cross section is located is the arc of the center of the circle, wherein the base circle is perpendicular to the rotation axis and does not intersect the rotation axis.
8. The imaging device of claim 7, wherein the preset angle is α, and the value range of the preset angle α is: α≥90°.
8. The imaging device of claim 7, wherein the preset angle is α, and the value range of the preset angle α is: 90°≤α≤180°.
The imaging device according to claim 5, wherein:

The drive shaft of the stepping motor is perpendicular to the circuit board;

The shaft part is connected with the drive shaft of the stepping motor.
The imaging device according to claim 5, wherein:

The drive shaft of the stepping motor is perpendicular to the circuit board;

The peripheral edge of the rotating body is provided with a toothed portion, and the imaging device further includes a transmission gear connected to the drive shaft of the stepping motor and meshed with the toothed portion.
The imaging device according to claim 5, wherein:

The drive shaft of the stepping motor is parallel to the circuit board;

The peripheral edge of the rotating body is provided with a toothed portion, and the imaging device further includes a worm gear connected to the drive shaft of the stepping motor and meshed with the toothed portion.
The imaging device of claim 5, wherein the number of the camera module is two, the switching module includes two optical elements, and the two optical elements are a polarizer and a micro Distance lens.
13. The imaging device of claim 13, wherein the macro lens is circular, and the polarizer and the macro lens are spaced apart.
The imaging device of claim 5, wherein the number of the camera module is three, the switch module includes three optical elements, and the three optical elements are infrared filters. , Ultraviolet filter and dimming film.
15. The imaging device according to claim 15, wherein the rotating body comprises a flat part, and the three optical elements and the flat part are fan-shaped and arranged around the axis.
The imaging device of claim 5, wherein the number of the camera module is four, the switching module includes three of the optical elements, and the three optical elements are infrared filters. , Ultraviolet filter and dimming film.
17. The imaging device according to claim 17, wherein the rotating body comprises a flat part, and the three optical elements and the flat part are fan-shaped and arranged around the axis.
A mobile terminal, characterized in that it comprises:

Shell; and

The imaging device according to any one of claims 1 to 18, wherein the imaging device is provided in the housing.
The mobile terminal of claim 19, wherein the number of the camera module is multiple;

The stepping motor is arranged between the plurality of camera modules or on one side of the plurality of camera modules.