CN110769144A

CN110769144A - Imaging device and mobile terminal

Info

Publication number: CN110769144A
Application number: CN201911179025.1A
Authority: CN
Inventors: 周彦汝; 韦怡; 周奇群; 张海裕; 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: 2020-02-07

Abstract

The invention is suitable for the technical field of imaging, and provides an imaging device and a mobile terminal. The imaging device provided by the invention is used for shooting by overlapping with a camera of a mobile terminal, and comprises: the rotating body is arranged on the outer side of the camera and can rotate relative to the camera; the imaging component is fixed on the rotating body and can be superposed with the camera; wherein the imaging part has a plurality of imaging parts, and the magnification of each imaging part is different. Because the imaging components have a plurality of and the magnification is different, in the shooting process, the rotation of each imaging component is driven through the rotation of the rotating body, different imaging components can be adjusted to be overlapped with the camera for shooting, so that the amplification rate of the mobile terminal is increased and adjusted, and the user experience is improved.

Description

Imaging device and mobile terminal

Technical Field

The invention belongs to the technical field of imaging, and particularly relates to an imaging device and a mobile terminal.

Background

At present, in order to meet different photographing requirements of users, cameras with different functions appear in electronic equipment. For example, the lens in the camera of the mobile phone may include a main lens, a wide-angle lens, a telephoto lens, a macro lens, and the like. Through the macro lens, macro shooting can be carried out, namely, objects are shot at a close shooting distance with a large magnification, and the micro lens is commonly used for shooting very fine objects such as flowers, insects and the like.

The magnification of the macro lens is generally fixed and cannot be changed, and thus the magnification of the object cannot be adjusted according to the situation of the object.

Disclosure of Invention

In view of this, embodiments of the present invention provide an imaging device and a mobile terminal to solve the technical problem that the magnification of a subject cannot be adjusted during a shooting process.

In order to solve the above problems, the technical solution of the embodiment of the present invention is implemented as follows:

an imaging apparatus for overlay shooting with a camera of a mobile terminal, the imaging apparatus comprising: the rotating body is arranged on the outer side of the camera and can rotate relative to the camera; the imaging component is fixed on the rotating body and can be superposed with the camera; wherein the imaging part has a plurality of imaging parts, and the magnification of each imaging part is different.

Further, the rotating body is provided with a through hole, and the through hole can be overlapped with the camera.

Further, at least one of the imaging components includes a plurality of lenses.

Further, the image forming apparatus further includes: one end of the rotating shaft is connected with the rotating body, and the other end of the rotating shaft is connected with the shell of the mobile terminal; the camera sets up in the casing, rotatory body winds the axis of pivot is rotatory.

Further, the imaging device is arranged on the inner side of the shell of the mobile terminal, the rotating shaft is arranged on one side of the camera, and the axis of the rotating shaft is parallel to the optical axis of the camera.

Further, the imaging device is arranged on the outer side of the shell of the mobile terminal, and the axis of the rotating shaft is parallel to the optical axis of the camera.

Furthermore, the rotating shaft is detachably connected with the shell of the mobile terminal.

Furthermore, a plurality of mounting holes are formed in the rotating body, and each imaging component is fixed in one mounting hole.

Further, the axis of each mounting hole is parallel to the axis of the rotating shaft.

Further, the imaging apparatus further includes: the driving piece is connected with the rotating shaft to drive the rotating shaft to rotate.

An embodiment of the present invention further provides a mobile terminal, including: a housing; a camera disposed within the housing; the imaging device is described above.

Further, the camera comprises a macro lens.

Further, the macro lens is a wide-angle macro lens, the minimum working distance of the wide-angle macro lens is 3mm, and the maximum field angle of the wide-angle macro lens is 77.6 degrees.

The imaging device provided by the embodiment of the invention comprises a rotating body and an imaging component, wherein the rotating body is arranged on the outer side of the camera and can rotate relative to the camera; the imaging component is fixed on the rotating body and can be superposed with the camera; the imaging section has a plurality of imaging sections, and the magnification of each imaging section is different. Through the setting, because the formation of image part has a plurality of and the magnification is different, at the shooting in-process, the rotation through rotatory body drives the rotation of each formation of image part, can adjust different formation of image parts and camera stack and shoot to realized the increase and the adjustment of mobile terminal's magnification, promoted user experience.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic view of an imaging apparatus in one embodiment of the invention;

FIG. 2 is a schematic sectional view of the camera head assembly;

FIG. 3 is a schematic diagram of a magnification calculation principle;

fig. 4 is a schematic view of an assembly of the imaging device and the mobile terminal;

fig. 5 is another assembly diagram of the imaging device and the mobile terminal;

FIG. 6 is a schematic view of an imaging apparatus in another embodiment of the invention;

FIG. 7 is a schematic view of an imaging component distribution in one embodiment of the invention;

FIG. 8 is a schematic view of an imaging assembly layout in another embodiment of the present invention;

FIG. 9 is a schematic view of an imaging member distribution in another embodiment of the present invention.

Description of reference numerals:

10. an imaging device; 11. rotating the body; 12. an imaging component; 13. a through hole; 14. a rotating shaft; 141. an axis; 15. gluing; 16. mounting holes; 17. a subject; 18. a screen; 19. enlarging the image on a screen; 2, the mobile terminal; 20. a camera; 21. a PCB board; 22. an image sensor; 23. a holder; 24. a lens; 25. a housing; 26. an optical axis.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various possible combinations of the specific features of the invention will not be described further.

In the embodiment of the present invention, the outer side refers to a side close to the subject, and the inner side refers to a side far away from the subject; the plurality of fingers is greater than or equal to two.

As shown in fig. 1, an imaging apparatus 10 according to an embodiment of the present invention is used for shooting in a superimposed manner with a camera 20 of a mobile terminal 2 (see fig. 4). The mobile terminal 2 may include a mobile terminal 2 device such as a mobile phone, a notebook computer, a tablet computer, and the like. The camera 20 is a component of the mobile terminal 2, and can implement a photographing function of the mobile terminal 2. The following embodiment will be described by taking the mobile terminal 2 as a mobile phone as an example.

As shown in fig. 2, the camera includes a PCB board 21, an image sensor 22, a holder 23, and a lens 24. In a mobile phone, CMOS is generally used as an image sensor, and the CMOS image sensor integrates a DSP (digital signal processing chip) and shows an appearance as one component. An image sensor 22 (a CMOS image sensor integrated with a DSP) is fixed on the PCB board 21, a holder 23 is provided on the outer side (i.e., the side close to the subject) of the image sensor 22 and connected to the PCB board 21, and the holder 23 is provided with a cavity for accommodating a lens 24, the lens 24 being opposite to the image sensor 22. In the photographing process, light of a photographed object enters the camera, the light firstly passes through the lens 24 and then reaches the image sensor 22, photons in the light strike the image sensor 22 to generate movable charges, which is an internal photoelectric effect, the movable charges are collected to form electric signals, Digital-to-analog conversion is carried out through the A/D converter, namely, the charge signals are converted into Digital signals, the Digital signals are sent to a Digital Signal Processor (DSP) for processing, and finally the Digital signals are transmitted to a screen of the mobile terminal 2 to form a display image, namely, photographing of the photographed object is realized. Specifically, 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 imaging device 10 and the camera 20 of the embodiment of the invention are used for overlapped shooting, specifically, the imaging device 10 and the lens 24 in the camera 20 are arranged in a stacked manner, light rays reach the image sensor 22 in the camera 20 after passing through the imaging device 10 and the lens 24 in the camera 20, and subsequent processing is carried out until an image of a shot object is formed on the screen of the mobile terminal 2.

As shown in fig. 1, the imaging apparatus 10 includes a rotating body 11 and an imaging part 12. The rotating body 11 is disposed outside the camera 20, that is, on a side of the camera 20 close to the subject. The rotating body 11 is rotatable with respect to the camera 20. Specifically, the lens 24 generally has an optical axis, and when an object is photographed, light of the object is incident on the lens 24 generally in a direction parallel to the optical axis of the lens 24, the optical axis of the lens 24 in the camera 20 is defined as the optical axis of the camera 20, and the rotating body 11 rotates around the optical axis of the camera 20. The rotating body 11 is adjacent to the lens 24 of the camera 20 with a certain distance, so that the rotation of the rotating body 11 can be realized without interfering with the camera 20.

The imaging part 12 is fixed to the rotating body 11. With the rotation of the rotating body 11, the imaging part 12 rotates relative to the camera 20. The imaging component 12 can be overlapped with the camera 20 during the rotation process, specifically, the overlapping means that the imaging component 12 can be stacked on the outer side of the lens 24 of the camera 20, a new lens 24 is formed together with the lens 24 of the camera 20, the object distance of the shot object to the lens 24 and the optical parameters of the lens 24 are changed, and the incident light is processed.

Wherein the imaging section 12 has a plurality, and the magnification of each imaging section 12 is different. The magnification ratio refers to the size ratio of the image on the screen to the real object, for example, the magnification ratio is 2, which indicates that the size of the image on the screen is twice the size of the real object.

The magnification rate felt by the user is an optical magnification rate and a screen magnification rate, the optical magnification rate refers to a ratio of a height of an image formed on the image sensor to a height of a subject, the screen magnification rate refers to a ratio of a screen size to the image sensor size, and the digital magnification rate is a ratio of a size on the screen after the user artificially magnifies a part of the same part and a size on the screen before the magnification. Specifically, as shown in fig. 3, the principle of magnifying the image sensed by the user after shooting is illustrated, as light reflected by the object 17 passes through the lens 24 and then reaches the image sensor 22, an electrical signal is generated, the electrical signal is converted into a digital signal, the digital signal is processed by a DSP digital signal processing chip (integrated in a CMOS image sensor), and then the digital signal is transmitted to the screen 18 of the mobile terminal 2 to form an image, and the user can magnify a part of the image on the screen 18 as needed, at which time the image displayed on the screen 18 is the screen magnified image 19.

Specifically, according to the basic optical imaging principle, tan (FOV/2) is the imaging height/focal length and the subject height/subject distance. The FOV is a field angle, and the field angle is an angle formed by two sides of the optical instrument, which uses the lens center of the optical instrument as a vertex and allows a measured or photographed object to pass through the maximum range of the lens center. The FOV is usually used to measure the field of view of a lens, for example, the angle of view of a conventional standard lens is about 45 degrees, the angle of view of a wide-angle lens is above 60 degrees, but near objects are distorted. According to the above formula for calculating the optical magnification, the increase of the optical magnification can be realized by reducing the object distance or increasing the focal length, that is, on the premise of ensuring clear imaging, the lens is as close to the object to be shot as possible and the focal length of the lens 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, the inverted image is reduced on the image sensor; when u is 2f, v is f, namely the focal length is equal to the image distance, forming an equal-size inverted image on the image sensor; f < u <2f, forming an enlarged inverted image on the image sensor; 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. Therefore, with the anxiety f unchanged, v and u have opposite trend, 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 an object in a close range, that is, an enlarged real image is formed on an image sensor, it is necessary to adjust the object distance u and the image distance v during macro photography, and the object distance u satisfies the following conditions: f < u <2f, and the image and object distances satisfy the above-described gaussian imaging formula.

The focal length of the lens 24 is related to the optical performance of the lens 24 itself, and the corresponding lens 24 itself also has its own magnification; the optical magnification of the optical instrument or mobile terminal 2 is related to the magnification of the lens 24 itself. The magnification of the lens 24 and the imaging assembly 12 is related to the magnification of the lenses that make up them, which is the ratio of the size of the image of an object passing through the lens in the focal plane to the actual size of the object. As shown in fig. 1, the imaging assemblies 12 may include one or more lens optics, and the different magnification of each imaging assembly 12 means that the optical magnification corresponding to the different imaging assemblies 12 is different for the same image sensor 22 (see fig. 2).

Through the setting, because image component 12 has a plurality ofly and the magnification is different, in the shooting process, through the rotation of rotatory body 11 drive each image component 12's rotation, can adjust different one-tenth parts and camera stack and shoot. According to the above analysis, after the imaging component 12 is overlapped with the camera 20 of the mobile terminal 2, on one hand, the imaging component 12 is arranged at the outer side of the camera, and the lens 24 after the overlapping combination is closer to the shot object, so that the optical magnification is larger; on the other hand, the magnification of the lens 24 after the superposition and combination is changed due to the addition of the imaging component 12, so that the magnification of the mobile terminal 2 is increased and adjusted, and the user experience is improved.

In one embodiment, the imaging device 10 may be disposed outside the main camera of the mobile phone, and performs superposition shooting with the main camera. It should be noted that the main camera is a camera mainly used in the conventional case of the mobile phone, and the lens 24 adopted by the main camera is a conventional lens, not a telephoto or wide-angle lens. Taking the example where the imaging apparatus 10 includes two imaging parts 12, when the main camera is not superimposed on the imaging parts 12 but works alone, normal shooting is performed; an imaging part 12 is composed of a single lens or two or more lenses, can realize a Working Distance (WD) of 10 cm-1 cm after being superposed and combined with a lens 24 of a main camera, and has an optical magnification of 5-20 times when shot by a mobile phone; the other imaging part 12 is composed of a single lens or two or more lenses, and can realize a Working Distance (WD) of 1-5 mm after being superposed and combined with a lens 24 of the main camera, and the optical magnification of mobile phone shooting reaches 20-40 times. Can overlap the combination through the rotation of formation of image part 12 and main camera according to the demand of difference when using, reach different magnification to promote user experience. The working distance is a distance from the object to a lens vertex (center) of a first surface (a surface closest to the object) of the lens 24 of the mobile terminal 2.

In another embodiment, the imaging device 10 may be disposed outside a macro camera of a mobile phone, and performs a superposition shooting with the macro camera. Taking the example that the imaging device 10 includes two imaging components 12, when the lens 24 of the macro camera is not overlapped with the imaging components 12, the macro camera works alone, the magnification of the macro camera is the magnification of the macro camera, the optical magnification of shooting with the macro camera is about 5 times, and the working distance is about 5 cm; after an imaging component 12 and a lens 24 of a macro camera are superposed and combined, parameters such as curvature radius, thickness, refractive index and the like of the new lens 24 are combined, so that the combined lens 24 can realize that the optical magnification reaches about 10 times and the working distance is about 1 cm; after the other imaging component 12 and the lens 24 of the macro camera are superposed and combined, the combined lens 24 can realize about 20 times of optical magnification and about 5mm of working distance. Each imaging assembly 12 may be comprised of a single piece or two or more pieces of ophthalmic lenses.

Alternatively, as shown in fig. 5, the rotating body 11 is provided with a through hole 13, and the through hole 13 may be overlapped with the camera 20 (see fig. 1). Specifically, the through holes 13 and the plurality of imaging members 12 are distributed on the rotating body 11. Since the rotating body 11 is provided outside the camera, the through hole 13 or one of the imaging members 12 is superimposed on the lens 24 (see fig. 2) of the camera 20 in the inward and outward directions by the rotation of the rotating body 11. When the through hole 13 overlaps the camera 20, the light first passes through the through hole 13 and then enters the lens 24 of the camera 20, that is: the camera 20 operates alone, and the magnification of the mobile terminal 2 is the magnification of the camera. The through hole 13 is preferably cylindrical and has a diameter greater than or equal to the diameter of the lens 24 of the camera 20, provided that the camera is not obstructed from working. Through set up through-hole 13 and a plurality of formation of image parts 12 on rotatory body 11 and abreast, can realize alone and the stack combination with different formation of image parts 12 of camera promptly through the rotation of image device 10, convenient operation is simple.

Optionally, the rotating body 11 may not be provided with a through hole, and the imaging device 10 is located on one side of the camera 20 and does not block the camera in the inward and outward directions under the condition that the superposition combination of the imaging component 12 and the camera 20 is not required; when the imaging part 12 and the lens 24 of the camera are overlapped to form a new lens, the rotating body 11 is started to rotate to drive the imaging part 12 to rotate.

As shown in fig. 1, the imaging device 10 may further include a rotation shaft 14 having one end fixedly connected to the rotation body 11 and the other end opposite to the one end connected to the housing of the mobile terminal 2. It should be noted that the fixed connection between the rotating shaft 14 and the rotating body 11 can be in various manners, such as clamping connection, threaded connection, etc. The housing of the mobile terminal 2 refers to a housing, preferably a back shell, such as the back shell of a cell phone or an IPAD, which is typically accessible to a user during use. The connection of the hinge 14 to the housing of the mobile terminal 2 may be a direct connection or an indirect connection formed by the connection of other components. Referring to fig. 4, the camera is provided in the housing 25, that is, the camera of the mobile terminal 2 is a built-in camera. The rotating body 11 rotates around the axis 141 of the rotating shaft 14, the axis 141 of the rotating shaft 14 is parallel to the optical axis 26 of the camera, and the rotating body 11 rotates in a plane perpendicular to the axis 141 of the rotating shaft 14, so that the imaging component 12 and the camera 20 are switched in a superposition mode.

In some embodiments, as shown in fig. 4, the imaging device 10 may be disposed inside the housing 25 of the mobile terminal 2. That is, the imaging device 10 is built in the mobile terminal 2, and the mobile terminal having the imaging device is not different from the mobile terminal not having the imaging device in appearance. The rotating shaft 14 is disposed at one side of the camera 20, and an axis 141 of the rotating shaft 14 is parallel to the optical axis 26 of the camera 20. Specifically, the rotating shaft 14 extends in the thickness direction of the mobile terminal 2, and is located on one side of the camera 20 in the length or width direction of the mobile terminal 2, the rotating body 11 is fixed at one end of the rotating shaft 14 close to the object to be photographed, and the other end of the rotating shaft 14 opposite to the rotating shaft is connected with the housing 25 or other components in the housing 25. The imaging device 10 is superimposed on the camera in front of the shooting direction of the lens 24 by rotating about the axis 141 of the rotary shaft 14. By providing the imaging device 10 in such a manner as to be built in the mobile terminal 2, the beauty of the mobile terminal 2 having the imaging device can be improved.

In other embodiments, as shown in FIG. 5, the imaging device 10 is disposed outside of the housing 25 of the mobile terminal 2. That is, the imaging device 10 is externally provided in the mobile terminal 2, and the mobile terminal having the imaging device has a significantly different structure from the mobile terminal not having the imaging device in appearance, and the mobile terminal 2 having the imaging device has an outwardly protruding structure. The axis 141 of the shaft 14 is parallel to the optical axis 26 of the camera 20. Specifically, the rotating shaft 14 extends toward the outside of the housing 25 of the mobile terminal 2 in the thickness direction of the mobile terminal 2, the rotating body 11 is fixed at one end of the rotating shaft 14 close to the object to be photographed, and the opposite end of the rotating shaft 14 is connected to the housing 25. The imaging device 10 is superimposed on the camera in front of the shooting direction of the lens 24 by rotating about the axis 141 of the rotary shaft 14. The imaging device is arranged in a mode of being externally arranged on the mobile terminal 2, so that the application range of the imaging device can be enlarged, and the imaging device is easily loaded on various existing mobile terminals 2.

Alternatively, as shown in fig. 6, in the case where the imaging device 10 is externally mounted, the connection of the hinge 14 to the housing 25 of the mobile terminal 2 may be detachable. Specifically, the adhesive 15 may be disposed at an end of the rotating shaft 14 connected to the housing 25, and the adhesive 15 may be used for multiple times. A suction cup may be further disposed at the end of the hinge 14 connected to the housing 25 to detachably connect to the housing 25 of the mobile terminal 2. Through the detachable connection of pivot and mobile terminal 2's casing, realized that imaging device's dress promptly is used, improved imaging device's carrying and convenient to use, further optimized user experience.

As shown in fig. 7 to 9, the rotating body 11 is provided with a plurality of mounting holes 16, and each imaging element 12 is fixed in one of the mounting holes 16. Specifically, the mounting holes 16 are all through holes formed in the rotating body 11, and besides the mounting holes 16, the rotating body 11 may have through holes 13 without any component mounted thereon, and the mounting holes 16 and the through holes 13 extend in the same direction, and preferably, they are all cylindrical holes and have the same diameter. An imaging component 12 comprising one or more lenses is secured in a mounting hole 16 in a variety of ways, such as by adhesive, snap fit, etc. In other embodiments, the rotating body 11 may be provided with only the mounting hole 16 without providing the through hole 13 to which any component is not mounted.

The distribution of the plurality of mounting holes 16 and the one through hole 13 in the rotating body 11 is described below as an example, and those skilled in the art will appreciate that the following distribution is merely an example and is not a limitation. Other distribution patterns or no through holes 13 may be constructed by those skilled in the art according to actual requirements.

Specifically, each mounting hole 16 is an axisymmetric, preferably cylindrical, hole, with the axis of the mounting hole 16 being parallel to the axis of the shaft 14. And preferably the axis of each mounting hole 16 is disposed equidistant from the axis of the shaft 14; and the axis of the through hole 13 is also parallel to the axis of the rotating shaft 14, and the distance from the axis of the rotating shaft 14 is equal to the distance from the axis of any one of the mounting holes 16 to the axis of the rotating shaft 14. That is, the mounting hole 16 and the through hole 13 are surrounded around the rotation shaft 14 at the same interval from the rotation shaft.

The specific distribution mode can be various. For example, as shown in fig. 5, there are two mounting holes 16 and one through hole 13, each hole is spaced apart, and on a plane perpendicular to the axis of the rotating shaft 14, the projected point of the axis of each hole forms an equilateral triangle, and the projected point of the axis of the rotating shaft 14 is located at the center of the equilateral triangle. In another embodiment, as shown in fig. 6, there are two mounting holes 16 and one through hole 13, and on a plane perpendicular to the axis of the rotating shaft 14, the projection of each hole is a circular surface and is sequentially tangent, the projection point of the axis of each hole forms an arc, and the projection point of the axis of the rotating shaft 14 is located at the center of the arc. In another embodiment, as shown in fig. 7, there are three mounting holes 16 and one through hole 13, each hole is spaced apart, and on a plane perpendicular to the axis of the rotating shaft 14, the projected point of the axis of each hole forms a square, and the projected point of the axis of the rotating shaft 14 is located at the center of the square.

The mounting holes 16 are arranged in various distribution modes, so that the distribution setting modes and the rotation modes of the imaging components 12 with different magnifications can be realized according to actual requirements, and the superposition combination with the camera 20 of the mobile terminal 2 is realized.

Optionally, the image forming apparatus 10 further includes a driving member connected to the rotating shaft 14 to drive the rotating shaft 14 to rotate. For example, the driving member may be a motor common to the camera 20 of the mobile terminal 2 or an independent motor for driving the rotation shaft 14. When the user uses the camera, the motor action can be controlled manually by the user or the action of the motor can be controlled manually according to the main camera or the macro camera.

An embodiment of the present invention further provides a mobile terminal 2, including: a housing 25, a camera 20 disposed within the housing 25, and the imaging device 10 described above. Specifically, the imaging device 10 may be built in or external to the mobile terminal 2. Because the imaging component 12 has a plurality of and the magnification is different, in the shooting process, the rotation through the rotatory rotation of rotating body 11 drives each imaging component 12, can adjust different imaging component 12 and camera stack and shoot to reduce the object distance and adjusted the focus of the camera lens 24 after the coincide combination, optical parameters such as refracting index have realized the increase and the adjustment of mobile terminal 2's magnification, have promoted user experience.

Among them, the camera 20 overlapped with the imaging device 10 includes a macro lens. Namely, a lens capable of clearly performing photographing with a large optical magnification in the case where the object distance is small. When the macro lens is used for independent shooting, the shot object can be magnified, and after the macro lens is overlapped with different imaging components 12, the magnification can be further increased and the adjustment of the magnification can be realized. The internationally accepted statement in the photographic world is that photography at optical magnifications of about 1: 1 to 1: 4 is macro photography, and photography at optical magnifications of 10: 1 to 200: 1 is micro photography.

The macro lens can be a long-focus ultramicro lens or a wide-angle ultramicro lens. In the embodiment Of the present invention, the macro lens is a wide-angle super-macro lens, and illustratively, the effective focal length f Of the wide-angle super-macro lens is 1.335mm, the Field Of View (FOV) at the maximum image height is 77.6 degrees, the f-number is 2.8, and the minimum working distance is 3mm, where the working distance is the distance from the object to the front end Of the lens, that is, the lens can focus on the object to be shot with an object distance Of about 3 mm.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An imaging device for shooting in superposition with a camera of a mobile terminal, the imaging device comprising:

the rotating body is arranged on the outer side of the camera and can rotate relative to the camera;

the imaging component is fixed on the rotating body and can be superposed with the camera;

wherein the imaging part has a plurality of imaging parts, and the magnification of each imaging part is different.

2. The imaging device of claim 1, wherein the rotating body defines a through hole, the through hole being capable of overlying the camera.

3. The imaging apparatus of claim 1, wherein at least one of said imaging components comprises a plurality of lenses.

4. The imaging apparatus according to claim 1 or 2, characterized by further comprising:

one end of the rotating shaft is connected with the rotating body, and the other end of the rotating shaft is connected with the shell of the mobile terminal; the camera sets up in the casing, rotatory body winds the axis of pivot is rotatory.

5. The imaging apparatus according to claim 4, wherein the imaging apparatus is disposed inside a housing of the mobile terminal, the rotation shaft is disposed at a side of the camera, and an axis of the rotation shaft is parallel to an optical axis of the camera.

6. The imaging device according to claim 4, wherein the imaging device is disposed outside a housing of the mobile terminal, and an axis of the rotation shaft is parallel to an optical axis of the camera.

7. The imaging apparatus of claim 6, wherein the hinge is detachably connected to the housing of the mobile terminal.

8. The imaging apparatus of claim 4, wherein said rotatable body defines a plurality of mounting holes, each of said imaging components being secured within one of said mounting holes.

9. The imaging apparatus of claim 8, wherein an axis of each of the mounting holes is parallel to an axis of the rotation shaft.

10. The imaging apparatus of claim 4, further comprising:

the driving piece is connected with the rotating shaft to drive the rotating shaft to rotate.

11. A mobile terminal, comprising:

a housing;

a camera disposed within the housing;

the imaging apparatus of any one of claims 1 to 10.

12. The mobile terminal of claim 11, the camera comprising a macro lens.

13. The mobile terminal of claim 12, wherein the macro lens is a wide-angle macro lens, a minimum working distance of the wide-angle macro lens is 3mm, and a maximum field angle of the wide-angle macro lens is 77.6 degrees.