CN210807350U - Mobile terminal - Google Patents

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

a mobile terminal

technical field

The utility model belongs to the field of imaging technology, in particular to a mobile terminal.

Background technique

Taking a mobile phone as an example, a mobile phone is generally equipped with multiple cameras, and the casing of the mobile phone is provided with more viewfinder holes to avoid the incident light of the cameras. Opening more viewfinder holes on the mobile phone shell will affect the appearance of the mobile phone.

Utility model content

In view of this, the embodiments of the present application are expected to provide a mobile terminal with fewer casing openings.

In order to achieve the above purpose, a mobile terminal according to an embodiment of the present application includes a casing, a camera module disposed in the casing, and a driving mechanism; the casing is provided with a viewfinder hole; the camera module includes a mounting seat and a driving mechanism. A plurality of cameras connected to the mounting base, each of the cameras includes a lens and an image sensor for imaging light passing through the lens, at least one of the plurality of lenses is a main camera lens and at least one is a super camera. a macro lens; the driving mechanism is connected with the camera module to drive a plurality of the lenses in the camera module to selectively align with the viewfinder hole.

Further, both the viewfinder hole and the image sensor are located on the optical axis of the lens that is aligned with the viewfinder hole.

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

Further, the super-macro lens can form images when the working distance is in the super-macro range, and the super-macro range is 3mm˜9mm.

Further, the value range of the focal length f of the super macro lens is 1.3 mm˜2.2 mm, and the field angle of the super macro lens is 70°˜78°.

Further, the mobile terminal further includes a limiting member; when at least one of the lenses is in a position aligned with the viewfinder hole, the mounting seat is in stop contact with the limiting member.

Further, the number of the limiting members is two, and the two limiting members are disposed on opposite sides of the mounting seat along the movement direction.

Further, the mounting seat has a hollow accommodating cavity inside, and part of the lens structure is arranged in the accommodating cavity; a side of the mounting seat facing away from the image sensor is formed with a plurality of avoidance holes, and the lens Another part of the structure is penetrated in the corresponding escape hole.

Further, the mobile terminal includes a guide seat and a guide rail, the guide rail is fixedly connected to the housing, the guide seat is arranged on the guide rail and can slide relative to the guide rail, and the guide seat is connected to the mounting rail. The seat is fixedly connected; the guide seat can drive the camera module to move under the driving of the driving mechanism.

Further, the driving mechanism includes a motor and a lead screw drivingly connected with the motor, the lead screw is threadedly connected with the guide seat; along the extending direction of the guide rail, the lead screw is arranged in parallel with 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.

In the mobile terminal of the embodiments of the present application, multiple lenses share a viewfinder hole, which can reduce the number of openings on the casing and improve the appearance of the mobile terminal; in addition, in this solution, since at least one of the multiple lenses is the main camera The lens and at least one of the lenses are super macro lenses, that is to say, the mobile terminal of this solution can realize super macro shooting and meet the needs of users for close-up super macro shooting. When shooting, you can first use the main camera lens to capture the overall outline of the screen and align the viewfinder to the area of interest in the screen, and then switch to the super macro lens to capture the details of the area, which makes super macro shooting more convenient and faster. Greatly enhances the user experience.

Description of drawings

1 is a schematic structural diagram of a mobile terminal according to an embodiment of the application, wherein a main camera lens is aligned with a viewfinder;

FIG. 2 is a schematic diagram of the structure shown in FIG. 1 in another state, wherein the super macro lens is aligned with the viewfinder;

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

FIG. 4 is a schematic diagram of another viewing angle of the structure shown in FIG. 3 , wherein the main camera lens is aligned with the viewfinder hole;

FIG. 5 is a schematic diagram of another state of the structure shown in FIG. 4 , wherein the super macro lens is aligned with the viewfinder;

6 is a schematic diagram of a driving connection between a driving mechanism and a camera module according to an embodiment of the application;

FIG. 7 is a schematic photograph of a mobile terminal according to an embodiment of the present application.

Description of reference numerals

Housing 10; viewing hole 10a; camera module 20; camera 21; lens 210; main camera lens 210'; super macro lens 210"; image sensor 211; mounting seat 22; accommodating cavity 220; PCB board 23; ; Motor 41; Screw 42; Guide seat 51; Guide rail 52

Detailed ways

It should be noted that the embodiments in this application and the technical features in the embodiments can be combined with each other without conflict. Improper restrictions on this application.

In the description of this application, the orientation or positional relationship of "length" and "width" is based on the orientation or positional relationship shown in FIG. 1 or FIG. 2 , and the “thickness” is perpendicular to the length direction shown in FIG. 1 and The direction of the plane composed of the width direction. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a reference to the present application. limits.

In the description of this application, plural means greater than or equal to two.

An embodiment of the present application provides a mobile terminal, and the mobile terminal may be a mobile terminal, such as a mobile phone, a tablet computer, a PDA (Personal Digital Assistant, personal digital assistant), and a portable computer, which is not limited herein. The following embodiments are described by taking the mobile terminal as a mobile phone as an example.

Please refer to FIG. 1 and FIG. 6 , the mobile terminal includes a casing 10 , a camera module 20 and a driving mechanism 40 . The casing 10 is an external appearance component of a mobile terminal, for example, a back panel of a mobile phone. The camera module 20 is arranged in the housing, and specifically, the camera module 20 includes a mounting seat 22 and a plurality of cameras 21 connected to the mounting seat 22 , and each camera 21 includes a lens 210 and is used for the light passing through the lens 210. The imaging image sensor 211, that is to say, the camera module 20 in the embodiment of the present application includes a plurality of image sensors 211 and a plurality of lenses 210, the lenses 210 and the image sensors 211 are in one-to-one correspondence, and each lens 210 has a The image sensor 211 corresponds to it; at least one of the plurality of lenses 210 is a main camera lens 210 ′ and at least one is a super macro lens 210 ″. Wherein, the super macro lens 210 ″ refers to the super macro lens at the working distance A lens that can image clearly in a wide range. Among them, the working distance refers to the distance from the object to the front of the lens.

The image sensor 211 is disposed on the image side of the lens 210 for imaging the light passing through the lens 210 . The image sensor 211 includes, but is not limited to, a CCD (Charged Coupled Device, charge coupled device) and a CMOS (Complementary Metal Oxide Semiconductor, 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 align with the viewfinder hole 10a alternatively, that is, at most one lens 210 can be aligned with the viewfinder hole 10a at the same time.

In the mobile terminal of the embodiment of the present application, the plurality of lenses 210 share one viewfinder hole 10a, which can reduce the number of openings on the casing 10 and improve the appearance of the mobile terminal; One is the main camera lens 210 ′ and at least one is the super macro lens 210 ″, that is to say, the mobile terminal of this solution can realize super macro shooting and meet the needs of users for close-range super macro shooting. It is the same viewfinder hole 10a. When shooting, you can first use the main camera lens 210' to capture the overall outline of the screen and align the viewfinder hole 10a to the area of interest in the screen, and then switch to the super macro lens 210" to shoot the The details of the area make super macro shooting more convenient and fast, which greatly enhances the user experience.

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 reciprocate linearly along the length direction or width direction of the mobile terminal.

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

During the shooting process, please refer to FIG. 7, the light of the object 17 first enters the lens 210, and then reaches the image sensor 211, and the photons in the light hit the image sensor 211 to generate movable charges, which is the internal photoelectric effect, which can move The charge is collected to form an electrical signal, which undergoes digital-to-analog conversion through the A/D converter, that is, the charge signal is converted into a digital signal, and the digital signal is sent to a DSP (Digital Signal Processor, digital signal processor) for processing, and finally transmitted to the screen of the terminal device. The display image 18 is formed thereon, that is, the photographing of the subject is realized. Specifically, the structure of the DSP includes an ISP (ImageSignal Processor, image signal processor) and a JPEG encoder (JPEG image decoder), where the ISP is the key to determining the smoothness of the image. It will be appreciated that for CMOS, the DSP can be integrated within the CMOS. CMOS has the advantages of high integration, low power consumption and low cost, and is more suitable for mobile phones with limited installation space.

The PCB board can be a rigid board, a flexible board or a flexible-rigid combination board. When the mobile phone adopts CMOS, the CMOS can be applied to any one of a hard board, a soft board or a combination of soft and hard boards. When the mobile phone adopts CCD, only the rigid-flex board can be used, and the rigid-flex board has the highest price among the above-mentioned three kinds of boards. Therefore, when the CCD is used, the cost of the mobile phone will be high.

In the embodiment of the present application, the super macro lens 210 ″ can perform close-range super macro shooting. Super macro shooting refers to the optical capability of the lens 210 , on the premise that the image of the object to be photographed is clear, and the mobile terminal is in the distance When the object to be photographed is relatively close, a larger optical magnification is used to photograph, wherein the optical magnification refers to the ratio between the imaging height of the image sensor 211 and the height of the photographed object.

It should be noted that the magnification experienced by the user = optical magnification * screen magnification * digital magnification, the optical magnification refers to the ratio of the height of the image on the image sensor 211 to the height of the object to be photographed, and the screen magnification refers to the screen size The ratio of the size of the image sensor 211 , the digital magnification ratio is the ratio of the size on the screen after the enlargement of the same part to the size on the screen before the enlargement, which is generated by the user artificially enlarging a part of the screen. Specifically, to illustrate the principle of magnification of the image felt by the user after shooting, as shown in FIG. 7 , the light reflected on the object 17 reaches the image sensor 211 after passing through the lens 210, and then generates an electrical signal, which passes through the model. Digital conversion device, the electrical signal is converted into a digital signal, and after being processed by DSP, it is transmitted to the screen of the terminal device to form an image 18, and the user can enlarge the part of the image 18 on the screen as needed. The image is a magnified image 19 for the screen.

Specifically, according to the basic optical imaging principle, tan(FOV/2)=imaging height/focal length=object height/object distance, and optical magnification=imaging height/object height=focal length/object distance. Among them, FOV is the field of view angle, and the field of view angle refers to the angle formed by the two sides of the optical instrument with the center of the lens of the optical instrument as the vertex and the maximum range of the object to be measured or the object that can pass through the center of the lens. FOV is usually used to measure the field of view of the lens. For example, the angle of view of a conventional standard lens is about 45 degrees, and the angle of view of a wide-angle lens is more than 60 degrees. According to the above calculation formula of optical magnification, to increase the optical magnification, it can be achieved by reducing the working distance or increasing the focal length, that is, on the premise of ensuring clear imaging, the lens should be as close to the subject as possible and the lens should be increased. 210 focal length to achieve.

According to the Gaussian imaging formula, 1/f=1/u+1/v. Where f is the focal length; u is the object distance; v is the image distance; when u>2f, a reduced and inverted image is formed on the image sensor 211; when u=2f, v=f, that is, the focal length is equal to the image distance, the When u=f, no image is formed; when u<f, it is a virtual image, which cannot be imaged on the image sensor 211. Therefore, when the focal length f remains unchanged, v and u show opposite trends. When u increases, v decreases, and when u decreases, v increases. Since macro shooting is a shooting method of taking close-up shots to obtain an enlarged image of the subject, that is, an enlarged real image is formed on the image sensor. Therefore, when shooting close-up macros, the object distance u is relatively small, and the working distance is also Accordingly, the focal length of the lens 210 needs to be smaller in order to meet the requirement of focusing, so as to ensure that f<u<2f, and the image distance and the object distance satisfy the above-mentioned Gaussian imaging formula.

An internationally recognized saying in the photography industry is that photography with an optical magnification of about 1:1 to 1:4 is macro photography. Focused macro lens, that is, the image sensor can still image clearly when the working distance is less than 10mm. It should be noted that "less than" in the embodiments of the present application does not include this number.

In one embodiment, the viewfinder hole 10a and the image sensor 211 are both located on the optical axis of the lens 210 aligned with the viewfinder hole 10a, that is, the optical axes of the plurality of lenses 210 in the camera module 20 are parallel, so that the installation The seat 22 only needs to translate without adjusting the angle during the movement.

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

The super macro lens 210" may be a telephoto super macro lens or a wide-angle super macro lens. In the embodiment of the present application, the super macro lens 210" is a wide-angle super macro lens 210. The focal length f of the lens 210" ranges from 1.3mm to 2.2mm, and the field of view (Field Of View, FOV) of the super macro lens 210" is 70° to 78°. Exemplarily, the super macro lens 210 "The effective focal length f is 1.335mm, the field of view at the maximum image height is 77.6 degrees, the aperture value (f-number) is 2.8, and the working distance is 3mm. The subject at a distance of about 3mm is in focus.

Please refer to FIG. 4 and FIG. 5 , the mounting seat 22 has a hollow accommodating cavity 220 inside, and a part of the lens 210 is arranged in the accommodating cavity 220 . The mounting seat 22 plays a role in mounting and fixing the lens 210 , and can also play a certain role. The protective effect prevents 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 and combination of lenses of the lens unit are not limited. The lens barrel plays a role of mounting and supporting the lens unit.

In order to enable the camera module 20 to move smoothly, in an embodiment, please refer to FIG. 6 , the mobile terminal includes a guide base 51 and a guide rail 52 , and the guide rail 52 is fixedly connected to the housing 10 , wherein the guide rail 52 can be directly fixed to the housing 10 The connection may also be indirectly fixedly connected to the housing 10 through other structures.

In the embodiments of this application, the "fixed connection" refers to a connection relationship between the two being connected without relative movement, and the specific connection method is not limited, including but not limited to snap connection, screw connection, integral molding, etc. Way.

The guide seat 51 is disposed on the guide rail 52 and can slide relative to the guide rail 52 . 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.

It should be noted that, the switching between the lenses 210 may be manual switching or automatic switching.

In one embodiment, the switching between the lenses 210 is automatic switching. Specifically, the driving mechanism 40 includes a motor 41 and a lead screw 42 drivingly connected to the motor 41 , and the lead screw 42 is threadedly connected to the guide seat 51 ; the extension along the guide rail 52 The lead screw 42 is arranged in parallel with the guide rail 52 ; the motor 41 drives the lead screw 42 to rotate so that the lead screw 42 can drive the guide seat 51 to slide along the lead screw 42 . That is, through the driving of the motor 41 , the rotational motion of the lead screw 42 can be transformed into a linear motion of the guide seat 51 , thereby enabling the guide seat 51 to slide along the guide rail 52 . The lead screw 42 cooperates with the guide seat 51 to ensure that the guide seat 51 is more stable during the sliding process.

Specifically, when the shooting mode needs to be switched, for example, the user needs to use the camera applet in the mobile terminal, the client APP, etc. to switch the macro shooting mode, the user triggers the macro shooting instruction, and the control system of the mobile terminal The shooting instruction automatically controls the movement of the motor 41 to move the super macro lens 210" to the position aligned with the viewfinder hole 10a.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the protection scope of the present application.

Claims (10)

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.

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