CN210807350U

CN210807350U - Mobile terminal

Info

Publication number: CN210807350U
Application number: CN201922072118.6U
Authority: CN
Inventors: 韦怡; 周奇群; 张海裕; 周彦汝; 陈嘉伟
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-06-19
Anticipated expiration: 2029-11-27

Abstract

The embodiment of the application provides a mobile terminal, which comprises a shell, a camera module and a driving mechanism, wherein the camera module is arranged in the shell; a view finding hole is arranged on the shell; the camera shooting module comprises a mounting seat and a plurality of cameras connected with the mounting seat, each camera comprises a lens and an image sensor for imaging light rays passing through the lens, at least one of the plurality of lenses is a main camera lens and at least one of the plurality of lenses is an ultra-micro lens; the driving mechanism is connected with the camera module to drive a plurality of lenses in the camera module to alternatively align with the view finding holes. In the embodiment of the application, the plurality of lenses share one viewing hole, so that the number of open holes in the shell can be reduced, and the appearance aesthetic feeling of the mobile terminal is improved; in addition, when shooting, the main shooting lens can be used for shooting the whole outline of the picture, the view finding hole is aligned to the interested area in the picture, and then the super-macro lens is switched to shoot the details of the area, so that the super-micro shooting is more convenient and faster, and the use experience of a user is greatly enhanced.

Description

Mobile terminal

Technical Field

The utility model belongs to the technical field of the formation of image, especially, relate to a mobile terminal.

Background

Taking a mobile phone as an example, a plurality of cameras are generally arranged in the mobile phone, and a plurality of view finding holes are arranged on a housing of the mobile phone to avoid incident light of the cameras, and the aesthetic feeling of the appearance of the mobile phone is affected by the plurality of view finding holes arranged on the housing of the mobile phone.

SUMMERY OF THE UTILITY MODEL

In view of the above, embodiments of the present application are directed to a mobile terminal with a small opening of the housing.

In order to achieve the above object, an embodiment of the present application provides a mobile terminal, which includes a housing, a camera module disposed in the housing, and a driving mechanism; a view finding hole is formed in the shell; the camera module comprises a mounting seat and a plurality of cameras connected with the mounting seat, each camera comprises a lens and an image sensor for imaging light rays passing through the lens, at least one of the plurality of lenses is a main camera lens and at least one of the plurality of lenses is an ultra-micro lens; the driving mechanism is connected with the camera module to drive the plurality of lenses in the camera module to alternatively align to the view finding hole.

Further, the view finding hole and the image sensor are both located on an optical axis of the lens aligned with the view finding hole.

Further, the driving mechanism can drive the camera module to linearly reciprocate along the width direction or the length direction of the mobile terminal.

Further, the ultramicro-range lens can image under the condition that the working distance is in an ultramicro range, and the ultramicro range is 3-9 mm.

Further, the range of the focal length f of the ultramicro lens is 1.3 mm-2.2 mm, and the field angle of the ultramicro lens is 70-78 degrees.

Further, the mobile terminal further comprises a limiting piece; when at least one of the lenses is positioned at a position aligned with the view finding hole, the mounting seat is contacted with the limiting piece in a stopping way.

Furthermore, the number of the limiting parts is two, and the two limiting parts are arranged on two opposite sides of the mounting base along the movement direction.

Furthermore, a hollow accommodating cavity is formed in the mounting seat, and part of the structure of the lens is arranged in the accommodating cavity; one side of the mounting seat, which deviates from the image sensor, is provided with a plurality of avoiding holes, and the other part of the structure of the lens penetrates through the corresponding avoiding holes.

Furthermore, the mobile terminal comprises a guide seat and a guide rail, the guide rail is fixedly connected with the shell, the guide seat is arranged on the guide rail and can slide relative to the guide rail, and the guide seat is fixedly connected with the mounting seat; the guide seat can drive the camera module to move under the driving of the driving mechanism.

Further, the driving mechanism comprises a motor and a lead screw in driving connection with the motor, and the lead screw is in threaded connection with the guide seat; the lead screw is arranged in parallel with the guide rail along the extension direction of the guide rail; the motor drives the lead screw to rotate so that the lead screw can drive the guide seat to linearly slide along the guide rail.

According to the mobile terminal provided by the embodiment of the application, the plurality of lenses share one viewing hole, so that the number of open holes in the shell can be reduced, and the appearance aesthetic feeling of the mobile terminal is improved; in addition, in the scheme, at least one of the plurality of lenses is the main shooting lens and at least one of the plurality of lenses is the ultramicro lens, namely, the mobile terminal of the scheme can realize ultramicro shooting, and meets the requirement of a user on close-range ultramicro shooting.

Drawings

Fig. 1 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application, in which a main camera lens is aligned with a view finder;

FIG. 2 is a schematic view of the structure of FIG. 1 in another state, in which the ultramicro-zoom lens is aligned with the viewing aperture;

fig. 3 is a schematic structural diagram of a camera module according to an embodiment of the present application;

FIG. 4 is a schematic view of another perspective of the structure shown in FIG. 3, wherein the main lens is aligned with the viewing aperture;

FIG. 5 is a schematic view of another state of the structure shown in FIG. 4, in which the ultramicro lens is aligned with the viewing aperture;

fig. 6 is a schematic view illustrating a driving connection between a driving mechanism and a camera module according to an embodiment of the present application;

fig. 7 is a schematic diagram of a mobile terminal according to an embodiment of the present application.

Description of the reference numerals

A housing 10; a finder hole 10 a; a camera module 20; a camera 21; a lens 210; a main lens 210'; an ultra macro lens 210 "; an image sensor 211; a mounting seat 22; a housing cavity 220; a PCB board 23; a drive mechanism 40; a motor 41; a lead screw 42; a guide base 51; guide rail 52

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the description of the present application, the "length" and "width" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 1 or fig. 2, and the "thickness" is a direction perpendicular to a plane composed of the length direction and the width direction shown in fig. 1. It is to be understood that such directional terms are merely for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application.

In the description of the present application, a plurality means two or more.

The embodiment of the present application provides a mobile terminal, which may be a mobile terminal such as a mobile phone, a tablet computer, a PDA (personal digital Assistant), a portable computer, and the like, without limitation. The following embodiments are described by taking a mobile terminal as a mobile phone as an example.

Referring to fig. 1 and 6, the mobile terminal includes a housing 10, a camera module 20, and a driving mechanism 40. The housing 10 is an exterior component of the mobile terminal, for example, a back plate of a cellular phone. The camera module 20 is disposed in the housing, specifically, the camera module 20 includes a mounting seat 22 and a plurality of cameras 21 connected to the mounting seat 22, each camera 21 includes a lens 210 and an image sensor 211 for imaging light passing through the lens 210, that is, the camera module 20 in this embodiment includes a plurality of image sensors 211 and a plurality of lenses 210, the lenses 210 correspond to the image sensors 211 one by one, and each lens 210 has one image sensor 211 corresponding to it; at least one of the plurality of lenses 210 is a main lens 210' and at least one is an macro lens 210 ". Here, the macro lens 210 "refers to a lens capable of clearly imaging in a case where the working distance is in the macro range. The working distance is a distance from the subject to the front end of the lens.

The image sensor 211 is disposed on the image side of the lens 210, and is configured to image light passing through the lens 210. The image sensor 211 includes, but is not limited to, a CCD (charge Coupled Device), a CMOS (Complementary Metal Oxide Semiconductor).

The driving mechanism 40 is connected to the camera module 20 to drive the plurality of lenses 210 in the camera module 20 to alternatively align with the viewing aperture 10a, that is, only one lens 210 can align with the viewing aperture 10a at most at the same time.

According to the mobile terminal of the embodiment of the application, the plurality of lenses 210 share one viewing hole 10a, so that the number of open holes in the housing 10 can be reduced, and the aesthetic feeling of the appearance of the mobile terminal is improved; in addition, in the present solution, at least one of the plurality of lenses 210 is the main shooting lens 210 'and at least one of the plurality of lenses is the macro lens 210 ", that is, the mobile terminal of the present solution can implement macro shooting, and meet the requirement of the user for close-range macro shooting, specifically, since the same view finding hole 10a is adopted, during shooting, the main shooting lens 210' can be used to shoot the whole outline of the picture and align the view finding hole 10a to the interested area in the picture, and then the view finding hole is switched to the macro lens 210" to shoot the details of the area, so that the macro shooting is more convenient and faster, and the user experience is greatly enhanced.

The number of the lenses 210 of the camera module 20 in the embodiment of the present application may also be more than two.

In the embodiment of the present application, the driving mechanism 40 drives the camera module 20 to move in a plane perpendicular to the thickness direction of the mobile terminal, for example, to linearly reciprocate along the length direction or the width direction of the mobile terminal.

It can be understood that, referring to fig. 3, the camera module 20 further includes a PCB 23, and the plurality of cameras 21 may be of a common-base structure or a common-base split structure, which is not limited herein.

In the shooting process, referring to fig. 7, light of the object 17 firstly enters the lens 210 and then reaches the image sensor 211, photons in the light strike the image sensor 211 to generate movable charges, which is an internal photoelectric effect, the movable charges are collected to form an electric Signal, Digital-to-analog conversion is performed through an a/D converter, that is, the electric charge Signal is converted into a Digital Signal, the Digital Signal is sent to a Digital Signal Processor (DSP) for processing, and finally the Digital Signal is transmitted to a screen of a terminal device to form a display image 18, that is, the shooting of the object is realized. Specifically, the structure of the DSP includes an ISP (image signal Processor) and a JPEG encoder (JPEG image decoder), wherein the ISP is a key for determining the smoothness of the image. It will be appreciated that for CMOS, the DSP may be integrated within the CMOS. The CMOS has the advantages of high integration level, low power consumption, low cost and the like, and is more suitable for mobile phones with limited installation space.

The PCB board can be a hard board, a soft board or a rigid-flexible board. When the mobile phone adopts the CMOS, the CMOS can be applied to any one of a hard board, a soft board, or a rigid-flex board. When the mobile phone adopts the CCD, only the rigid-flexible board can be used, and the rigid-flexible board has the highest price among the three boards, so that when the CCD is adopted, the cost of the mobile phone is higher.

In the embodiment of the present application, the macro lens 210 ″ can perform close-range macro shooting, where the macro shooting refers to shooting with a larger optical magnification ratio when the mobile terminal is close to a shot object through the optical power of the lens 210 on the premise of ensuring that the shot object is clearly imaged, where the optical magnification ratio refers to a ratio between an imaging height of the image sensor 211 and a height of the shot object.

It should be noted that, the magnification sensed by the user is an optical magnification, i.e., a screen magnification, i.e., a digital magnification, the optical magnification refers to a ratio of a height of an image formed on the image sensor 211 to a height of a subject, the screen magnification refers to a ratio of a screen size to a size of the image sensor 211, and the digital magnification refers to a ratio of a size on the screen after the user manually enlarges a part of the screen to generate enlargement of the same part to a size on the screen before enlargement. Specifically, for example, as shown in fig. 7, the light reflected by the object 17 reaches the image sensor 211 after passing through the lens 210, and then generates an electrical signal, which is converted into a digital signal by the analog-to-digital conversion device, and then transmitted to the screen of the terminal device to form the image 18 after being processed by the DSP, and the user can enlarge a part of the image 18 on the screen as needed, and the image displayed on the screen is the screen enlarged image 19.

Specifically, according to the basic optical imaging principle, tan (FOV/2) is the imaging height/focal length which is the subject height/object distance, and the optical magnification is the imaging height/subject height which is the focal length/object distance. The FOV is a field angle, which is an angle formed by two sides of an optical instrument, wherein the center of a lens of the optical instrument is a vertex, and a measured object or an object to be shot can pass through the center of the lens in the largest range. The FOV is typically measured as the field of view of the lens, e.g., a conventional standard lens with an angle of view around 45 degrees and a wide-angle lens with an angle of view above 60 degrees. According to the above formula for calculating the optical magnification, the increase of the optical magnification can be achieved by decreasing the working distance or increasing the focal length, that is, on the premise of ensuring clear imaging, the lens is as close to the object as possible and the focal length of the lens 210 is increased.

According to the gaussian imaging formula, 1/f is 1/u + 1/v. Wherein f is the focal length; u is the object distance; v is the image distance; when u >2f, a reduced inverted image is formed on the image sensor 211; when u is 2f and v is f, namely the focal length is equal to the image distance, an equal-size inverted image is formed on the image sensor 211; f < u <2f, which is an enlarged inverted image on the image sensor 211; when u is f, no imaging is carried out; when u < f, it is a virtual image and cannot be imaged on the image sensor 211. Therefore, v and u have opposite changing trends with constant focal length f, and v decreases with increasing u and v increases with decreasing u. Since macro photography is a photography method for obtaining an enlarged image of a subject in close range, i.e., an enlarged real image is formed on an image sensor, the object distance u is relatively small and the working distance is correspondingly small in close range macro photography, so that the focal length of the lens 210 needs to be smaller to satisfy the requirement of focusing, so as to ensure that f < u <2f, and the image distance and the object distance satisfy the above gaussian imaging formula.

The internationally acknowledged statement in the photographic world is that shooting with optical magnification of about 1: 1-1: 4 belongs to macro photography, and in the embodiment of the application, the ultra-macro lens refers to a macro lens which can still realize focusing when the working distance is less than 10mm, namely, an image sensor can still clearly image when the working distance is less than 10 mm. In the present embodiment, "less than" does not include the number.

In one embodiment, the viewing aperture 10a and the image sensor 211 are located on the optical axis of the lens 210 aligned with the viewing aperture 10a, that is, the optical axes of the lenses 210 in the camera module 20 are parallel, so that the mount 22 only needs to be translated without adjusting the angle during the movement process.

In one embodiment, the ultramicro-distance range is 3mm to 9 mm. That is, when the working distance is 3mm to 9mm, the macro lens can form an image, and the image can be clearly formed on the image sensor 211.

The macro lens 210 ″ may be a telephoto macro lens or a wide-angle macro lens. In the embodiment Of the present application, the macro lens 210 "is a wide-angle macro lens 210, specifically, the range Of the focal length f Of the macro lens 210" is 1.3mm to 2.2mm, the Field angle (FOV) Of the macro lens 210 "is 70 ° to 78 °, exemplarily, the effective focal length f Of the macro lens 210" is 1.335mm, the Field angle at the maximum image height is 77.6 degrees, the aperture value (f-number) is 2.8, and the image can be clearly imaged when the working distance is 3mm, that is, the lens 210 can focus on the object to be photographed with the working distance Of about 3 mm.

Referring to fig. 4 and 5, a hollow accommodating cavity 220 is formed in the mounting seat 22, a part of the structure of the lens 210 is disposed in the accommodating cavity 220, and the mounting seat 22 plays a role in mounting and fixing the lens 210 and also plays a role in protecting the lens 210 to prevent other components from scratching the lens 210.

In one embodiment, the lens 210 includes a lens barrel and a lens unit disposed in the lens barrel. The number of lenses of the lens unit is not limited and the combination manner is not limited. The lens barrel plays a role in mounting and supporting the lens unit.

In order to enable the camera module 20 to move smoothly, in an embodiment, referring to fig. 6, the mobile terminal includes a guide seat 51 and a guide rail 52, and the guide rail 52 is fixedly connected with the housing 10, wherein the guide rail 52 may be directly fixedly connected with the housing 10, or indirectly fixedly connected with the housing 10 through other structures.

In the embodiment of the present application, the term "fixed connection" refers to a connection relationship between two connected parts without relative movement, and the specific connection manner is not limited, and includes but is not limited to a snap connection, a screw connection, an integral molding, and the like.

The guide seat 51 is arranged on the guide rail 52 and can slide relative to the guide rail 52, and the guide seat 51 is fixedly connected with the mounting seat 22; the guide seat 51 can drive the camera module 20 to move under the driving of the driving mechanism 40. That is, the driving mechanism 40 drives the guide base 51 to slide along the guide rail 52, and the guide base 51 drives the mounting base 22 to slide.

The switching between the lenses 210 may be manual switching or automatic switching.

In one embodiment, the switching between the lenses 210 is automatic, specifically, the driving mechanism 40 includes a motor 41 and a lead screw 42 in driving connection with the motor 41, and the lead screw 42 is in threaded connection with the guide base 51; the lead screw 42 is disposed parallel to the guide rail 52 in the extending direction of the guide rail 52; the motor 41 drives the lead screw 42 to rotate so that the lead screw 42 can drive the guide holder 51 to slide along the lead screw 42. That is, by the driving of the motor 41, the rotational motion of the lead screw 42 can be changed into the linear motion of the shoe 51, whereby the shoe 51 can be made slidable along the guide rail 52. The screw 42 and the guide seat 51 are mutually matched, so that the guide seat 51 can be ensured to be more stable in the sliding process.

Specifically, when the shooting mode needs to be switched, for example, the user uses a shooting applet, a client APP, and the like in the mobile terminal to perform macro shooting mode switching, the user triggers a macro shooting instruction, and the control system of the mobile terminal automatically controls the motor 41 to move according to the shooting instruction of the user, so as to move the macro lens 210 ″ to a position aligned with the viewing hole 10 a.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.

Claims

1. A mobile terminal, comprising:

the shell is provided with a view finding hole;

the camera module is arranged in the shell and comprises a mounting seat and a plurality of cameras connected with the mounting seat, each camera comprises a lens and an image sensor for imaging light rays passing through the lens, at least one of the plurality of lenses is a main camera lens and at least one of the plurality of lenses is an ultra-micro lens;

and the driving mechanism is connected with the camera module to drive the plurality of lenses in the camera module to alternatively align to the view finding hole.

2. The mobile terminal of claim 1, wherein the viewing aperture and the image sensor are both located on an optical axis of the lens aligned with the viewing aperture.

3. The mobile terminal according to claim 1, wherein the driving mechanism is capable of driving the camera module to reciprocate linearly along a width direction or a length direction of the mobile terminal.

4. The mobile terminal of claim 1, wherein the ultramicro lens is capable of imaging with a working distance in an ultramicro range, wherein the ultramicro range is 3mm to 9 mm.

5. The mobile terminal of claim 1, wherein the focal length f of the ultramicro lens ranges from 1.3mm to 2.2mm, and the field angle of the ultramicro lens ranges from 70 ° to 78 °.

6. The mobile terminal of claim 1, wherein the mobile terminal further comprises a stopper; when at least one of the lenses is positioned at a position aligned with the view finding hole, the mounting seat is contacted with the limiting piece in a stopping way.

7. The mobile terminal according to claim 6, wherein the number of the position-limiting members is two, and two position-limiting members are disposed on two opposite sides of the mounting base along the moving direction.

8. The mobile terminal of claim 1, wherein the mount has a hollow accommodating cavity therein, and a part of the lens is disposed in the accommodating cavity; one side of the mounting seat, which deviates from the image sensor, is provided with a plurality of avoiding holes, and the other part of the structure of the lens penetrates through the corresponding avoiding holes.

9. The mobile terminal according to claim 1, wherein the mobile terminal comprises a guide base and a guide rail, the guide rail is fixedly connected with the housing, the guide base is disposed on the guide rail and can slide relative to the guide rail, and the guide base is fixedly connected with the mounting base; the guide seat can drive the camera module to move under the driving of the driving mechanism.

10. The mobile terminal according to claim 9, wherein the driving mechanism comprises a motor and a lead screw in driving connection with the motor, the lead screw being in threaded connection with the guide base; the lead screw is arranged in parallel with the guide rail along the extension direction of the guide rail; the motor drives the lead screw to rotate so that the lead screw can drive the guide seat to linearly slide along the guide rail.