CN212305437U

CN212305437U - Imaging device and mobile terminal

Info

Publication number: CN212305437U
Application number: CN202020768643.1U
Authority: CN
Inventors: 杨承修; 游琮伟; 张升云
Original assignee: Nanchang Oufei Huaguang Technology Co ltd
Current assignee: Jiangxi Jinghao Optical Co Ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-01-05
Anticipated expiration: 2030-05-11

Abstract

The utility model provides an imaging device, include: a circuit board; the camera module is arranged on one side of the circuit board; the switching module is arranged on one side of the camera module, which is far away from the circuit board, and comprises at least one optical element; the stepping motor is connected with the switching module and is used for driving the switching module to rotate; and the motor driving circuit is electrically connected to the circuit board and is used for driving the stepping motor so as to control the relative position of the at least one optical element relative to the at least one camera module. Above-mentioned imaging device can accurate control step motor's rotation angle, and has promoted the diversification of image effect. The utility model discloses propose simultaneously one kind include image device's mobile terminal.

Description

Imaging device and mobile terminal

Technical Field

The utility model relates to an imaging technology field, especially an imaging device and mobile terminal.

Background

At present, in order to meet different photographing requirements of users, mobile terminals such as mobile phones and the like can be provided with a filter switcher, and the filter switcher can drive two filters with different functions to switch. However, such a filter switcher can switch only two filters.

For solving this problem, prior art discloses a marching type glass piece switches module, and it includes a fixing base install a step motor and slidable and install a movable piece on the fixing base, be fixed with the multi-disc edge on the movable piece the glass piece that the stationary blade slip direction was arranged in proper order, the edge machining of movable piece has the driving gear, step motor passes through drive gear and connects the driving gear is in order to drive the movable piece removes to satisfy the switching between the glass piece more than two.

However, in the process of implementing the present application, the inventors found that the prior art has at least the following problems: the existing optical filter switcher or stepping glass sheet switching module can only drive the glass sheet to reciprocate along a single direction, cannot adjust the angle of the glass sheet, and cannot switch the glass sheet to any plurality of positions.

SUMMERY OF THE UTILITY MODEL

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 image forming apparatus including:

a circuit board;

the camera module is arranged on one side of the circuit board;

the switching module is arranged on one side, away from the circuit board, of the camera module and comprises at least one optical element, and the optical element is at least one of a lens and an optical filter;

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

and the motor driving circuit is electrically connected to the circuit board and is used for driving the stepping motor so as to control the relative position of the at least one optical element relative to the at least one camera module.

The imaging device of the embodiment drives the stepping motor to rotate through the motor driving circuit, so that the switching module can rotate to enable the optical element to be selectively overlapped with the camera module, and the motor driving circuit can accurately control the rotating angle of the switching module to enable the optical element to be adjusted to a plurality of different positions, thereby realizing different image effects. Therefore, the imaging device solves the problems that the angle of the glass sheet cannot be adjusted and the switching position is less in the conventional optical filter switcher, and further improves the diversification of the image effect.

In some embodiments, the stepper motor comprises:

a housing;

the driving shaft is arranged in the shell and connected with the switching module;

a magnet connected to the driving shaft;

the coil assembly is arranged in the shell and comprises a plurality of groups of coils, and the coil assembly is used for driving the driving shaft to rotate after being electrified; and

the motor pin is connected with the circuit board.

Because step motor passes through motor pin connecting circuit board, and then the connector of accessible circuit board controls step motor and camera module simultaneously, realizes the best image effect.

In some embodiments, the motor driving circuit is configured to receive a command signal of a rotational position of the stepping motor and output a pulse signal to the stepping motor to drive the stepping motor to rotate.

The motor driving circuit precisely controls the rotating direction and the rotating angle of the stepping motor by outputting the pulse signals, and the movement precision of the stepping motor is improved.

In some embodiments, the motor driving circuit is further configured to receive a position detection signal of the stepping motor, and output a pulse signal to the stepping motor again according to an amount of deviation between the position detection signal and the instruction signal. The motor driving circuit can further accurately control the rotation angle of the stepping motor, and the high-precision requirement of the imaging device is met. In some embodiments, the step angle is equal to or less than 5 degrees, thereby encrypting the number of steps of the stepper motor, increasing the position at which the optical element can rest.

In some embodiments, the switching module further comprises a rotating body, and a shaft center part is arranged in the middle of the rotating body;

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

In some embodiments, the rotating body is circular in shape; at least one of the optical elements is a polarizing plate and extends in a circumferential direction of the rotating body.

The polaroid can eliminate the reflection phenomenon of the nature except from the target object, and each degree of the polaroid can have different polarization effects so as to adapt to various shooting conditions.

In some embodiments, the switching module is rotatable about a rotation axis;

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

The polarizing plate with the shape is small in size, so that the production cost of the polarizing plate is reduced.

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 preset angle enables the polarization direction of light rays in the camera module to be any angle, so that the camera module is suitable for different external environments and user requirements.

90°≤α≤180°。

when the preset angle is 180 degrees, the polaroid can correspond to the two camera modules.

In some embodiments, a drive shaft of the stepper motor is perpendicular to the circuit board; the shaft center part is connected with a driving shaft of the stepping motor.

Therefore, the rotating body can be connected with the driving shaft of the stepping motor through the shaft center part to rotate together with the driving shaft.

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

the periphery of the rotating body is provided with a tooth-shaped part, and the imaging device further comprises a transmission gear which is connected with a driving shaft of the stepping motor and meshed with the tooth-shaped part.

Because the stepping motor drives the rotating body to rotate through the transmission gear, the position of the stepping motor is conveniently and flexibly arranged.

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

the periphery of the rotating body is provided with a tooth-shaped part, and the imaging device further comprises a worm gear which is connected with a driving shaft of the stepping motor and meshed with the tooth-shaped part.

Because step motor passes through the worm wheel and drives rotatory body rotatory, conveniently set up step motor's position in a flexible way.

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

The polaroid can eliminate the reflection phenomenon of the nature from the outside of a target object, and can be simultaneously stacked on the two camera modules; the macro lens can realize partial amplification effect.

In some embodiments, the number of the camera modules is three, and the switching module includes three optical elements, which are an infrared filter, an ultraviolet filter and a dimmer respectively.

In the above embodiment, the three optical elements are an infrared filter, an ultraviolet filter and a light reduction filter respectively, so as to realize an infrared effect, an ultraviolet effect and a light reduction effect respectively; when the camera module is used, the three optical elements can rotate respectively and correspond to one corresponding camera module respectively.

In some embodiments, the rotating body includes a flat light portion, and three optical elements and the flat light portion are fan-shaped and are disposed around the axial center portion.

In some embodiments, the number of the camera modules is four, and the switching module includes three optical elements, which are an infrared filter, an ultraviolet filter and a dimmer respectively.

In the above embodiment, the three optical elements are an infrared filter, an ultraviolet filter and a light reduction filter respectively, so as to cooperate with one camera module to realize an infrared effect, an ultraviolet effect and a light reduction effect, and the other camera module obtains an original shooting effect.

An embodiment of the present application further provides a mobile terminal, including: a housing; and an imaging device as in any preceding embodiment, the imaging device being disposed within the housing.

Because image device among the mobile terminal is including switching module, step motor and motor drive circuit, when motor drive circuit drive step motor was rotatory, the switching module can rotate so that optical element optionally overlaps with the camera module and establishes to provide corresponding optical effect for the camera module, in order to promote the image effect. The motor driving circuit can accurately control the rotation angle of the switching module, and adjusts the optical element to a plurality of different positions, so that different image effects are realized. Therefore, the mobile terminal solves the problems that the angle of the glass sheet cannot be adjusted and the switching position is less in the conventional optical filter switcher, and further improves the diversification of the image effect.

In some embodiments, the number of the camera modules is plural;

the stepping motor is arranged between the plurality of camera modules or arranged 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 imaging device can be matched with the structures of various mobile terminals, so that the application range is wide.

Drawings

Fig. 1 is a perspective view of an imaging device according to a first embodiment of the present invention.

Fig. 2 is a perspective exploded schematic view of the imaging apparatus shown in fig. 1.

Fig. 3 is a perspective view of a stepping motor in the image forming apparatus shown in fig. 2.

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

Fig. 5 is a schematic perspective view of an imaging device according to a second embodiment of the present invention.

Fig. 6 is a perspective exploded schematic view of the imaging device shown in fig. 5.

Fig. 7 is a perspective view of an image forming apparatus according to a third embodiment of the present invention.

Fig. 8 is a perspective exploded schematic view of the imaging device shown in fig. 7.

Fig. 9 is a schematic perspective view of a mobile terminal according to a fourth embodiment of the present invention.

Fig. 10 is a perspective exploded view of an imaging device in the mobile terminal shown in fig. 9.

Fig. 11 is a schematic perspective view of a mobile terminal according to a fifth embodiment of the present invention.

Fig. 12 is a perspective exploded view of the imaging device in the mobile terminal shown in fig. 11.

Fig. 13 is a schematic perspective view of a mobile terminal according to a sixth embodiment of the present invention.

Fig. 14 is a perspective exploded view of the imaging device in the mobile terminal shown in fig. 13.

Description of the main elements

Image forming apparatus 100

Circuit board 10

Mounting surface 11

Connecting part 12

Camera module 20

Image pickup sensor 21

Lens mounting module 22

Lens 23

First flexible circuit board 24

Switching module 30

Rotating body 31

Rotation axis 311

Axle center part 312

Mounting portion 314

Through hole 316

Tooth 318

Optical element 32

Base circle 321

Stepping motor 40

Outer casing 41

Drive shaft 42

Magnet 43

Coil assembly 44

Motor pin 45

Second flexible circuit board 46

Electronic component base 47

Motor drive circuit 50

Drive gear 60

Worm wheel 70

Housing 200

Mobile terminal 1000

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

It is further noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Referring to fig. 1 and fig. 2, a first embodiment of the present invention 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 disposed on one side of the circuit board 10, the switch module 30 is disposed on one side of the camera module 20 away from the circuit board 10, the switch module 30 includes a rotating body 31 and two optical elements 32 disposed on the rotating body 31, and the optical elements 32 are used for providing a specific optical effect for the camera module 20. The rotating body 31 of the switching module 30 is connected with the stepping motor 40, and the stepping motor 40 is connected with the switching module 30 and used for driving the switching module 30 to rotate; the motor driving circuit 50 is electrically connected to the circuit board 10 and is configured to drive the stepping motor 40, so as to control a 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 driving circuit 50, and the switching module 30 can rotate synchronously to enable the two optical elements 32 to be selectively overlapped with the camera module 20, that is, the two optical elements 32 respectively correspond to the optical axis direction of the camera module 20, so as to provide corresponding optical effects for the camera module 20, and improve 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 respectively adjusted to a plurality of different positions, thereby realizing different image effects. Therefore, the imaging device 100 solves the problem that the conventional filter switcher cannot adjust the angle of the glass sheet and has fewer switching positions, thereby improving the diversification of the image effect.

Specifically, the circuit board 10 is used to carry various components of the image forming apparatus 100. In the present embodiment, the circuit board 10 is provided with a mounting surface 11, and the camera module 20, the stepping motor 40, and the motor driving circuit 50 are all provided 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 apparatus 100. The circuit board 10 may have a reinforcing steel plate on a surface opposite to the mounting surface 11, and the reinforcing steel plate is used to reinforce the strength of the circuit board 10. The structure and arrangement of the connecting portion 12 and the reinforcing steel plate can be selected from the available prior art according to the requirement, and are not described herein again.

The camera module 20 includes an image capturing sensor 21, a lens mounting module 22 and a lens 23 sequentially disposed on the circuit board 10.

The image pickup sensor 21 is used for image pickup. The image capturing sensor 21 is disposed on the mounting surface 11 of the circuit board 10 and electrically connected to the circuit board 10. In the present embodiment, the image capturing 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 a lens 23 and forming an accommodating space for placing the image capturing sensor 21. In the present embodiment, the lens mounting module 22 adopts a lens base, which is substantially block-shaped and has a through cavity. The mirror base is fixedly connected to the mounting surface 11 of the circuit board 10.

The lens 23 includes at least one lens made of resin or glass.

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

The optical element 32 may 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 with characteristics of changing the incident light path, and the filter includes an optical polarizer with any shape, a light-reducing mirror, an infrared filter, an ultraviolet filter, a visible filter, a high-pass filter and other filters with characteristics of eliminating the incident light portion (wavelength, frequency, amplitude). The switching module 30 can select and combine the types and the number of the optical elements 32 according to the requirement to realize the diversification of the image effect.

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

In the embodiment, the rotating body 31 has a circular or elliptical structure, the central portion of the rotating body 31 is provided with an axial center portion 312, and the two optical elements 32 are disposed around the axial center portion 312, and under different implementation conditions, the structure of the optical element 32 of the switching 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 may be one, with different portions of its own structure having different filter structures.

In the present embodiment, one optical element 32 is a polarizing plate extending in the circumferential direction of the rotating body 31. The angle of the polaroid can be 180 degrees or more, and each degree has different polarization effects so as to adapt to various shooting conditions. The stepping motor 40 can drive any position of the polarizer corresponding to the optical axis direction of the camera module 20, so that the polarizer provides different polarization effects. The polarizer may eliminate light reflection from other than a target in nature, for example, the polarizer may be rotated to different angles to eliminate water reflection and window reflection, and the polarizer may be rotated at different angles when a user takes a mobile phone.

Specifically, the switching module 30 is rotatable around a rotation axis 311, and in the present embodiment, the rotation axis 311 is disposed at the center of the hub 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 spaced apart from each other.

The polarizer has a cross section perpendicular to the rotation axis 311, the cross section is a surface swept by the base circle 321 rotating around the rotation axis 311 by a preset angle, the center of the base circle 321 rotates along a circular arc with a point where the rotation axis 311 intersects the surface of the cross section as a center, and the base circle 321 is perpendicular to the rotation axis 311 and does not intersect the rotation axis 311. The 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. 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. The size of the base circle 321 may be matched to the lens 23 to minimize the volume of the polarizer.

The value range of the preset angle alpha is set according to the external environment and the user requirements. In one embodiment, the predetermined angle α ≧ 90 °, for example, α can be 90 °, 180 °, 270 °, 360 °. The value range of the preset angle enables the polarization direction of light rays in the camera module to be any angle, so that the camera module is suitable for different external environments and user requirements.

Preferably, the value range of the preset angle α is as follows: alpha is more than or equal to 90 degrees and less than or equal to 180 degrees. When the preset angle is 180 degrees, the polaroid can correspond to the two camera modules.

As shown in fig. 2, α is 180 °.

The other optical element 32 is spaced apart from the optical element 32, and may be a convex lens, a concave lens, a liquid lens, or other lens with characteristics for changing the path of incident light. In this embodiment, the lens may be a micro lens (micro lenses), and the micro lens may achieve a partial magnifying effect. The macro lens is circular and is matched with the size of the lens 23 in the camera module 20.

In the present embodiment, the rotating body 31 has a mounting portion 314 formed at a position corresponding to the optical element 32, and the optical element 32 is fixed to the mounting portion 314. In the present embodiment, the two mounting portions 314 are through holes disposed at intervals, and the two optical elements 32 are disposed in the two through holes, respectively, but the mounting portions 314 may also be two independent mounting grooves. It is understood that in the case of a single optical element 32, the mounting portion 314 is correspondingly configured as a through hole or mounting slot that is compatible with the optical element 32.

The switch module 30 further has a through hole 316, and 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 the present embodiment, the material of the rotating body 31 may be metal or plastic. Preferably, the rotating body 31 is made of a transparent material, but not limited thereto, the rotating body 31 may also be made of an opaque material, and a through hole is formed at a portion corresponding to the optical element 32.

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

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

Referring to fig. 2 and 3, the stepping motor 40 is used to convert the electrical pulse into an angular displacement. The stepping motor 40 is disposed on the mounting surface 11 of the circuit board 10 and is disposed adjacent to the camera module 20, and in one embodiment, the stepping motor 40 may be fixed on the circuit board 10 by fixing screws.

The stepping motor 40 includes a housing 41, a driving shaft 42, a magnet 43, a coil assembly 44, and a motor pin 45. The driving shaft 42 is partially arranged in the shell 41 and connected to the switching module 30, and the magnet 43 is connected to the driving shaft 42; the coil assembly 44 is disposed in the housing 41 and includes a plurality of coils, and the coil assembly 44 is used for driving the driving shaft 42 to rotate after being electrified; the motor pin 45 is connected to the circuit board 10 through the second flexible circuit board 46. Because the stepping motor 40 is connected to the circuit board 10 through the motor pin 45, the stepping motor 40 and the camera module 20 can be simultaneously controlled through the connecting portion 12 of the circuit board 10, and the best image effect is achieved.

Wherein each set of coils is symmetrically disposed along the drive shaft 42. After the coil assembly 44 is energized, the coil assembly 44 generates an attractive force or a repulsive force to the magnet 43, and the driving shaft 42 is rotated in a forward direction or in a reverse direction by alternately energizing the positive and negative poles.

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

The motor drive circuit 50 is configured to receive a command signal of a rotational position of the stepping motor 40 and output a pulse signal to the stepping motor 40 to drive the stepping motor 40 to rotate. The motor driving circuit 50 precisely controls the rotation angle and the rotation direction of the stepping motor 40 by outputting a pulse signal, thereby improving the movement precision of the stepping motor 40 and meeting the requirement of the imaging device 100 on high precision.

When the stepping motor 40 receives a pulse signal from the motor driving circuit 50, the stepping motor 40 rotates in a predetermined direction by a predetermined angle (referred to as "step angle"), and the stepping motor 40 rotates by one step at the predetermined angle. The amount of angular displacement is controlled by controlling the number of pulses to rotate the stepper motor 40 by N times the pitch 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, so as to encrypt the number of steps of the stepping motor 40, increase the position where the optical element 32 can stop, and thus precisely drive the switching module 30 to rotate, thereby improving the motion precision of the switching module 30. It is understood that in other embodiments, the step angle may be set to other degrees greater than 5 degrees, as desired.

The motor drive circuit 50 is also configured 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 command signal until the stepping motor 40 moves to the position indicated by the command signal. Therefore, the motor driving circuit 50 can precisely control the rotation angle of the stepping motor 40, and meet the requirement of the imaging device 100 for high precision. It is understood that the stepping motor 40 may be configured with a position sensor for sensing a rotational position of the stepping motor 40 and emitting a position detection signal.

Referring to fig. 4, fig. 4 is a pulse waveform diagram illustrating an example of an embodiment of the present invention. The pulse signal output to the stepping motor 40 by the motor drive circuit 50 is a double pulse signal.

For example, the motor driving circuit 50 drives the stepping motor 40 to rotate to the stop position by the pulse of the positive current, and if the stop position exceeds the target position, the stepping motor 40 is driven to rotate to the target position in the reverse direction by the pulse of the negative current; if the target position is moved away again, the stepping motor 40 is driven to return to the target position by the pulse of the positive current, and the operation is repeated, so that the motion precision of the stepping motor 40 can be controlled.

Fig. 5 and 6 are views of an image forming apparatus 100 according to a second embodiment provided in the present 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 driving circuit 50; the driving shaft 42 of the stepping motor 40 is perpendicular to the circuit board 10. The difference is that the periphery of the rotating body 31 is provided with the tooth-shaped portion 318, the imaging device 100 further includes the transmission gear 60, and the transmission gear 60 is connected to the driving shaft 42 of the stepping motor 40 and meshed with the tooth-shaped portion 318, so that the stepping motor 40 drives the rotating body 31 to rotate through the transmission gear 60, which facilitates the flexible setting of the position of the stepping motor 40, for example, the stepping motor 40 is disposed on one side of the camera module 20 or between a plurality of camera modules 20.

In addition, in the present embodiment, the axial center portion 312 is a rotational bearing, which can provide a supporting force and a rotational degree of freedom for the optical element 32.

The optical element 32 of this embodiment is a polarizer, which is fan-shaped and has an angle greater than 180 degrees; the portion of the rotating body 31, other than the polarizer, where the optical element 32 is not disposed is a flat light portion, which does not change the optical effect of the corresponding camera module 20, and the flat light portion may also be a through hole. It is understood that the above structure is only an example, the optical element 32 may be a lens or another type of filter, and the number of the optical elements 32 may be plural.

Fig. 7 and 8 are views of an image forming apparatus 100 in a third embodiment provided in the present 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 tooth portion 318 is disposed on the periphery of the rotating body 31. The difference is that the driving shaft 42 of the stepping motor 40 is parallel to the circuit board 10, and the motor pin 45 is electrically connected to the circuit board 10 through an electronic component base 47; the imaging device 100 further includes a worm wheel 70, the worm wheel 70 is connected with the driving shaft 42 of the stepping motor 40 and is meshed with the tooth portion 318 of the rotating body 31, so that the stepping motor 40 drives the switching module 30 to rotate through the worm wheel 70. Since the stepping motor 40 drives the rotating body 31 to rotate through the worm wheel 70, the position of the stepping motor 40 can be flexibly set conveniently.

The rotating body 31 is provided with three optical elements 32 and a flat part 315, the flat part 315 may be a portion of the rotating body 31 where no optical element 32 is provided, and of course, the flat part 315 may also be a through hole. The three optical elements 32 and the plane light portion 315 are sequentially disposed around the circumferential direction of the rotating body 31, and in the present embodiment, the three optical elements 32 and the plane light portion 315 are both fan-shaped and disposed 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 achieve an infrared effect, an ultraviolet effect and a dimming effect, respectively; it is understood that the above structure is only an example, the optical element 32 may be a lens or other filter, and the number of the optical elements 32 may be one, two, or three or more.

Embodiments of the present application also provide a mobile terminal, which includes a housing and the imaging device 100 of any of the above embodiments, where the imaging device 100 is disposed in the housing. The number of the camera modules 20 in the imaging apparatus 100 may be one, two, three, four, or more than four.

Fig. 9 is a mobile terminal 1000 according to a fourth embodiment of the present application. The mobile terminal 1000 includes a housing 200, and the image forming apparatus 100 is provided in the housing 200.

Referring to fig. 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 the camera modules 20 is two.

The stepping motor 40 is disposed between the two camera modules 20, and the switching module 30 is rotatably disposed at 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 polaroid can eliminate the reflection phenomenon of the nature from the outside of the target object, and the angle of the polaroid is equal to or more than 180 degrees, so that the polaroid can be simultaneously overlapped on the two camera modules 20 to adjust the optical characteristics of the two camera modules 20; the macro lens can realize partial amplification effect; the portion where the optical element 32 is not provided does not change the original photographing effect.

Fig. 11 is a mobile terminal 1000 according to a fifth embodiment of the present application. The mobile terminal 1000 includes a housing 200, and the image forming apparatus 100 is provided in the housing 200.

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

In addition, in the present embodiment, the rotating body 31 is provided with three optical elements 32 and one planoconical portion 315, and the three optical elements 32 and the planoconical portion 315 are respectively provided in order around the circumferential direction of the rotating body 31. Specifically, the three optical elements 32 and the flat portion 315 are each fan-shaped and disposed around the axis portion 312.

In the present embodiment, the three optical elements 32 are all fan-shaped and all have an angle of 90 degrees. In use, the three optical elements 32 can be rotated and correspond to a corresponding camera module 20.

In one embodiment, the three optical elements 32 are an infrared filter, an ultraviolet filter and a light reduction filter, respectively, to achieve an infrared effect, an ultraviolet effect and a light reduction effect, respectively; it is understood that the above structure is only an example, the optical element 32 may be a lens or other filter, and the number of the optical elements 32 may be one, two, or three or more.

Fig. 13 is a mobile terminal 1000 according to a sixth embodiment of the present application. The mobile terminal 1000 includes a housing 200, and the image forming apparatus 100 is provided in the housing 200.

Referring 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 the camera modules 20 is four.

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

In the present embodiment, the rotating body 31 is provided with three optical elements 32 and one planoconically portion 315, and the three optical elements 32 and the planoconically portion 315 are respectively provided in order around the circumferential direction of the rotating body 31. Specifically, the three optical elements 32 and the flat portion 315 are each fan-shaped and disposed around the axis portion 312.

In the present embodiment, the three optical elements 32 are all fan-shaped and all have an angle of 90 degrees. In use, the three optical elements 32 can rotate respectively and correspond to one camera module 20, and the flat light 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 light reduction filter respectively, so as to cooperate with one camera module 20 to achieve an infrared effect, an ultraviolet effect and a light reduction effect, respectively, and the other camera module 20 obtains an original shooting effect; it is understood that the above structure is only an example, the optical element 32 can be a lens or other filter, and the number of the optical elements 32 is not limited to three.

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

Because the imaging device 100 in the mobile terminal 1000 includes the switching module 30, the stepping motor 40 and the motor driving circuit 50, when the motor driving circuit 50 drives the stepping motor 40 to rotate, the switching module 30 can rotate to enable the optical element 32 to be selectively overlapped with the camera module 20, so as to provide a corresponding optical effect for the camera module 20, and improve the image effect. The motor driving 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 realizing different image effects. Therefore, the mobile terminal 1000 solves the problem that the conventional optical filter switcher cannot adjust the angle of the glass sheet and has fewer switching positions, thereby improving the diversification of the image effect.

In addition, the optical element 32 can be adjusted according to the requirement, so that the imaging device 100 can realize different mixed physical optical effects; the stepping motor 40 can be arranged between the plurality of camera modules 20 or arranged at one side of the plurality of camera modules, so that the switching module 30 can respectively provide optical effects for the plurality of 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 various structures of the mobile terminal 1000, and has a wide application range.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An image forming apparatus, comprising:

a circuit board;

the camera module is arranged on one side of the circuit board;

the switching module is arranged on one side of the camera module, which is far away from the circuit board, and comprises at least one optical element;

2. The imaging apparatus of claim 1, wherein the stepper motor comprises:

a housing;

the driving shaft is partially arranged in the shell and is connected with the switching module;

a magnet connected to the driving shaft;

the motor pin is connected with the circuit board.

3. The imaging apparatus according to claim 1, wherein the switching module further comprises a rotating body, a central portion of which is provided with a shaft center portion;

the rotating body is connected with the stepping motor, and at least one optical element is arranged on the rotating body.

4. The imaging apparatus of claim 3, wherein the rotating body has a circular outer shape; at least one of the optical elements is a polarizing plate and extends in a circumferential direction of the rotating body.

5. The imaging apparatus of claim 4,

the switching module can rotate around a rotation axis;

6. The imaging apparatus as claimed in claim 5, wherein the preset angle is α, and the preset angle α has a value range of: alpha is more than or equal to 90 degrees.

7. The imaging apparatus as claimed in claim 5, wherein the preset angle is α, and the preset angle α has a value range of: alpha is more than or equal to 90 degrees and less than or equal to 180 degrees.

8. The imaging apparatus of claim 3,

a driving shaft of the stepping motor is vertical to the circuit board;

the shaft center part is connected with a driving shaft of the stepping motor.

9. The imaging apparatus of claim 3,

a driving shaft of the stepping motor is vertical to the circuit board;

10. The imaging apparatus of claim 3,

the driving shaft of the stepping motor is parallel to the circuit board;

11. The imaging apparatus of claim 3, wherein the number of said camera modules is two, and said switching module comprises two of said optical elements, which are a polarizer and a macro lens, respectively.

12. The imaging apparatus of claim 11, wherein said macro lens is circular and said polarizer and said macro lens are spaced apart.

13. The imaging device according to claim 3, wherein the number of the camera modules is three, and the switching module includes three optical elements, which are an infrared filter, an ultraviolet filter and a dimmer, respectively.

14. The imaging apparatus according to claim 13, wherein said rotating body includes a flat light portion, and three of said optical elements and said flat light portion are each fan-shaped and are disposed around said axial center portion.

15. The imaging device according to claim 3, wherein the number of the camera modules is four, and the switching module includes three optical elements, which are an infrared filter, an ultraviolet filter and a dimmer, respectively.

16. The imaging apparatus according to claim 15, wherein said rotating body includes a flat light portion, and three of said optical elements and said flat light portion are each fan-shaped and are disposed around said axial center portion.

17. A mobile terminal, comprising:

a housing; and

the imaging device of any one of claims 1 to 16, disposed within the housing.

18. The mobile terminal of claim 17, wherein the number of the camera modules is plural;