CN110708456A

CN110708456A - Externally hung lens assembly and electronic equipment

Info

Publication number: CN110708456A
Application number: CN201911179363.5A
Authority: CN
Inventors: 周彦汝; 周奇群; 韦怡; 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: 2020-01-17

Abstract

The application provides an externally-hung lens assembly which is used for shooting by being overlapped with a camera of electronic equipment and comprises a base, a lens and a light guide plate; the base is detachably connected to the body of the electronic equipment and can move relative to the camera; the lens is arranged on the base and can be overlapped with the camera; the light guide plate set up in on the base, the light guide plate throws the light of mending the light source to the camera with the region of making a video recording after the camera lens superposes. The application also provides an electronic device, which comprises a body, a second light supplementing source arranged on the body, a camera arranged on the body and the externally hung lens assembly, wherein the second light supplementing source is arranged on the body. The application provides an external lens subassembly and electronic equipment can realize the shooting of micro-range or super micro-range. The light guide plate projects the light of the light supplementing source to the camera shooting area after the camera and the lens are overlapped, so that the illumination of a shot object in the camera shooting area is improved.

Description

Externally hung lens assembly and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to an externally-hung lens assembly and electronic equipment.

Background

The electronic device is exemplified by a mobile phone, and the camera is arranged inside the mobile phone. The built-in camera of the mobile phone can only be used for regular shooting at a certain distance, when shooting at a short distance or at an ultra-micro distance, the distance between the camera and a shot object is very close to be only a few millimeters to a few tens of millimeters, however, the multiplying power of the camera is fixed, and the requirements can not be met.

Disclosure of Invention

In view of this, embodiments of the present disclosure are expected to provide an external lens assembly and an electronic device, so as to solve the problem that a camera of the electronic device cannot meet the requirement of macro or ultra-macro shooting.

In order to achieve the purpose, the technical scheme of the application is realized as follows:

an aspect of an embodiment of the present application provides an external lens assembly for shoot with the camera stack of electronic equipment, include:

the base is detachably connected to the body of the electronic equipment and can move relative to the camera;

the lens is arranged on the base and can be overlapped with the camera;

the light guide plate is arranged on the base and projects light of the light supplementing source to the camera and a shooting area after the camera lens is overlapped.

Further, the light guide plate includes:

a first light emitting surface;

the first bottom surface is arranged opposite to the first light-emitting surface;

the first light incident surface is connected with the first light emergent surface and the first bottom surface; and the number of the first and second groups,

the light guide structures are arranged on the first bottom surface;

the light of the light supplement source enters from the first light incoming surface, is converted into light which exits from the first light exiting surface through the light guide structure, and is projected to a shooting area formed by overlapping the camera and the lens.

Further, the light guide structure is a spherical light guide point, and the diameter of the spherical light guide point gradually increases from the position close to the first light incident surface to the position far away from the first light incident surface.

Further, the distance between two adjacent spherical light guide points close to the first light incident surface is greater than the distance between two adjacent spherical light guide points far away from the first light incident surface.

Further, the light guide structure is a V-shaped groove, and the distance between two adjacent V-shaped grooves close to the first light incident surface is greater than the distance between two adjacent V-shaped grooves far away from the first light incident surface.

Further, the apex angle of the V-shaped groove is greater than 90 °.

Further, the lens comprises at least one lens group, each lens group can be overlapped with the camera, and each lens group comprises at least one lens.

Further, the light guide plate is arranged around the periphery of each lens group.

Furthermore, the external lens component also comprises a total internal reflection light gathering piece, and the light of the light supplementing source enters the light guide plate through the reflection of the light gathering piece.

Furthermore, the light gathering part also comprises a light reflecting structure, and light rays of the light supplementing source enter the light guide plate through reflection of the light reflecting structure.

Further, the light reflecting structures are distributed along the peripheral direction of the light guide plate.

Further, the light gathering member is a total internal reflection lens.

Further, the light gathering member is arranged around the periphery of the light guide plate.

Further, the light-gathering piece also comprises an accommodating space for accommodating the light supplementing source.

Further, the base is slidable relative to the camera;

alternatively, the base may be rotatable relative to the camera.

Further, the external lens assembly further comprises a first light supplement source arranged on the base, and the light supplement source comprises the first light supplement source.

On the other hand, the embodiment of the application provides an electronic device, which includes a body, a second light supplement source arranged on the body, a camera arranged on the body and any one of the above external lens assemblies, wherein the light supplement source includes the second light supplement source.

Further, the electronic device further comprises a positioning part arranged on the body and a limiting part arranged on the base, the lens is superposed on the camera under the condition that the positioning part and the limiting part are overlapped, and the lens is staggered with the camera under the condition that the positioning part and the limiting part are staggered.

Furthermore, one of the positioning part and the limiting part is a protrusion, and the other of the positioning part and the limiting part is a groove.

Further, the electronic device further comprises a first mark located on the body and a second mark located on the base, the lens is superposed on the camera under the condition that the first mark and the second mark are overlapped, and the lens and the camera are staggered under the condition that the first mark and the second mark are staggered.

According to the externally-hung lens component and the electronic equipment, the base is detachably connected to the electronic equipment, and the externally-hung lens component can be conveniently and quickly stacked on the camera under the condition that the structure of the camera of the original electronic equipment is not changed. The lens is arranged on the base and can move along with the base. The base moves relative to the camera, and then the lens moves relative to the camera. The lens can be overlapped with the camera to form a laminated lens in the moving process, and the object distance from a shot object to the camera and the optical parameters of the camera, such as the magnification, are changed, so that macro or ultra-macro shooting is realized. The light guide plate projects the light of the light supplementing source to the camera shooting area after the camera and the lens are overlapped, so that the illumination of a shot object in the camera shooting area is improved.

Drawings

Fig. 1 is a schematic structural diagram of a first external lens assembly according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of the first externally-hung lens assembly of FIG. 1;

FIG. 3 is a schematic diagram of a mobile phone shooting a subject;

fig. 4 is a schematic structural diagram of a first electronic device according to an embodiment of the present disclosure;

FIG. 5 is a cross-sectional view of the first electronic device of FIG. 4;

fig. 6 is a schematic structural diagram of a second external lens assembly according to an embodiment of the present application;

FIG. 7 is a schematic diagram of the first electronic device shown in FIG. 4 and the second external lens assembly shown in FIG. 6;

fig. 8 is a schematic structural diagram of a third external lens assembly according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a second electronic device according to an embodiment of the present application;

FIG. 10 is a schematic diagram of the third externally-hung lens assembly shown in FIG. 8 and the second electronic device shown in FIG. 9;

fig. 11 is a schematic structural diagram of a fourth external lens assembly according to an embodiment of the present application;

FIG. 12 is a schematic diagram of the fourth externally-hung lens assembly shown in FIG. 11 and the second electronic device shown in FIG. 9;

fig. 13 is a schematic structural diagram of a fifth external lens assembly according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a third electronic device provided in the embodiment of the present application;

fig. 15 is a schematic diagram of the fifth external lens assembly in fig. 13 and the third electronic device in fig. 14.

Description of the reference numerals

An electronic device 1000; an external lens assembly 10; a base 11; a lens 12; a lens group 121; a lens 1211; a light guide plate 13; a first bottom surface 13 a; a first light emitting surface 13 b; a first light incident surface 13 c; a plurality of light guide structures 131; a light-condensing member 14; a second light incident surface 14 a; a second light emitting surface 14 b; a second bottom face 14 c; the accommodating space 14 d; the light reflecting structure 141; a first light supplement source 15; a chute 16; a body 20; a second fill-in light source 30; a slide rail 40; an object 1; a camera lens 2; an image sensor 3; a screen 4; the screen magnifies the image 5.

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.

Before introducing the external lens assembly provided in the embodiments of the present application, an application scenario related to the external lens assembly in each embodiment of the present application is first introduced. In the application scenario, the external lens assembly may be connected to a camera of any electronic device having a shooting function, where the electronic device may be, for example, a mobile phone, a tablet computer, a PDA (personal digital Assistant), a portable computer, and other electronic devices. The following embodiments are described by taking an example in which the exoscope assembly is applied to a cellular phone.

The camera includes a PCB (Printed Circuit Board), an image sensor, and a main lens. The image sensor is fixed on the PCB. During shooting, light of a shot object enters the main lens and then reaches the image sensor, photons in the light strike the image sensor to generate movable charges, which are internal photoelectric effects, and the movable charges are collected to form electric signals. The a/D converter (analog-to-digital converter) converts the electrical signal into a digital signal, and the digital signal is processed by a DSP (digital signal Processor). And finally, the image is transmitted to the screen of the electronic equipment to be displayed, namely, the shooting of the shot object is realized.

It should be noted that the image sensor may be a CMOS (Complementary Metal oxide semiconductor) or a CCD (charge Coupled Device), or may be another type of image sensor other than a CMOS or a CCD, such as a CID (charge injection Device). 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 external lens assembly 10 and the camera of the embodiment of the application are overlapped for shooting, specifically, the lens 12 in the external lens assembly 10 and the main lens of the camera are arranged in a stacked mode, light of a shot object reaches an image sensor of the camera after passing through the lens 12 of the external lens assembly 10 and the main lens of the camera, and subsequent processing is carried out until an image of the shot object is formed on a screen of the electronic device.

Referring to fig. 1 to 7, an external lens assembly 10 is provided in an embodiment of the present application, and is used for shooting in a manner of overlapping with a camera (not shown) of an electronic device 1000. The external lens assembly 10 includes a base 11, a lens 12, and a light guide plate 13. The base 11 is detachably connected to the body 20 of the electronic device 1000 and is movable relative to the camera. The lens 12 is disposed on the base 11 and can be overlapped with the camera. The light guide plate 13 is disposed on the base 11. The light guide plate 13 projects the light of the light compensating source to the imaging area where the camera and the lens 12 are superimposed.

The base 11 is detachably connected to the body 20 of the electronic device 1000, and the external lens assembly 10 can be conveniently and quickly stacked on the camera without changing the structure of the camera of the original electronic device. The lens 12 is disposed on the base 11 and can move along with the base 11. The base 11 moves relative to the camera and the lens 12 moves relative to the camera. The lens 12 may be superimposed with the camera during movement.

Specifically, the above-described "superimposition" means that the lens 12 can be stacked on the main lens of the camera. The lens 12 is laminated with the main lens of the camera to form a laminated lens having optical parameters different from those of the main lens of the camera. In other words, by stacking the lens 12 with the main lens, an optical parameter of the camera, such as magnification, is changed, thereby realizing macro or ultra-macro photography.

Further, the supplementary light source is, for example, a point light source and/or a line light source, and the light guide plate 13 may convert the point light source and/or the line light source into a surface light source. The light of the point light source and/or the line light source enters the light guide plate 13, the light guide plate 13 changes the light path of the light of the point light source and/or the line light source to form a surface light source, and then the light of the surface light source is projected to a shooting area where the camera and the lens are overlapped. That is, the light of the surface light source is projected to the imaging area of the laminated lens, and the illuminance of the subject in the imaging area is increased. Pointolite and/or line source change the area source into for throw the regional light evenly distributed of making a video recording to camera and camera lens after the stack, make the regional light distribution of making a video recording even, realize even light filling.

It is understood that the fill-in light source in the embodiments of the present application may be a point light source and/or a line light source of an electronic device, for example, when the electronic device is a mobile phone, a flash lamp of the mobile phone and/or other types of fill-in lights. The light supplement source in the embodiment of the present application may also be a flash lamp of the external lens assembly 10 and/or another type of light supplement lamp.

It should be noted that, in an embodiment, the body 20 of the electronic device 1000 includes a housing for isolating the internal components of the electronic device 1000 from the outside. The internal components of the electronic device 1000 include a processor, memory, and the like. The base 11 is detachably attached to the housing. In another specific embodiment, the body 20 of the electronic device 1000 includes a protective sleeve removably disposed on an outer surface of the housing. The base 11 is detachably arranged on the protective sleeve. When the shooting is needed to be superposed, the protective sleeve is arranged on the outer surface of the shell, and the base 11 is connected with the protective sleeve. Therefore, when the overlapped shooting is not needed, the protective sleeve can be detached from the shell.

The externally-hung lens assembly 10 provided by the embodiment of the application can be used for macro or ultra-macro shooting. Macro or ultra-macro shooting refers to shooting at a large magnification when the electronic device is close to the object, that is, the distance between the lens 12 and the object may be only a few millimeters to a dozen or so millimeters. When the externally-hung lens assembly 10 provided by the embodiment of the application is used for macro or ultra-macro shooting, shooting is performed at a large magnification, for example, shooting with an image ratio (also referred to as an optical magnification) of 1: 4 or more is performed, wherein the image ratio refers to a ratio between an imaging height of an image sensor and a height of a 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 to a height of a subject, the screen magnification refers to a ratio of a screen size to a size of the image sensor, 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, the principle of enlarging an image sensed by a user after shooting is illustrated in fig. 3, as shown in fig. 3, light reflected by a shot object 1 reaches an image sensor 3 after passing through a camera lens 2, then an electric signal is generated, the electric signal is converted into a digital signal through an analog-to-digital converter, the digital signal is processed by a DSP digital signal processing chip and then transmitted to a screen 4 of an electronic device to form an image, the user can enlarge a part of the image on the screen 4 as needed, and at this time, the image displayed on the screen 4 is a screen enlarged image 5. It is understood that the camera lens 2 herein may be a main lens of a camera, may be a lens 12 of the external lens assembly 10, and may also be a stacked lens formed by stacking the main lens and the lens 12, that is, the camera lens herein is for schematically explaining the imaging principle of the optical system, and does not specifically refer to a specific lens.

Specifically, according to the basic optical imaging principle, tan (FOV/2) is the imaging height/focal length, i.e., the subject height/subject 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 generally used to measure the field of view of a lens, for example, the field angle of a conventional standard lens is about 45 degrees, and the field angle of a wide-angle lens is over 60 degrees, but near object shooting is distorted. Under the condition that the effective sensing size of the image sensor is constant, namely the size of the imaging height is limited, the height of the shot object can only be reduced if the optical magnification is increased, according to the optical principle, the height of the shot object is equal to the object distance tan (FOV/2), the object distance and the FOV are correspondingly reduced, and the focal length is increased if the FOV is reduced under the condition that the imaging height is constant. Therefore, in a certain case of the image sensor, increasing the optical magnification can be achieved by decreasing the object distance, i.e., the lens is as close as possible to the subject and increasing the focal length of the lens.

In the optical imaging system, as will be understood by those skilled in the art, the main lens of the camera in the embodiment of the present application, the lens in the external lens assembly, and the laminated lens formed by overlapping the main lens and the lens are all used to form an optical signal of a subject and reflect the optical signal to the image sensor. The image sensor converts an optical signal corresponding to an object into an image signal.

In an embodiment of the present application, referring to fig. 8-10, the light guide plate 13 includes a first bottom surface 13a, a first light emitting surface 13b, a first light incident surface 13c, and a plurality of light guide structures 131. The first bottom surface 13a is disposed opposite to the first light emitting surface 13 b. The first light incident surface 13c is connected to the first light emitting surface 13b and the first bottom surface 13 a. The light guide structures 131 are disposed on the first bottom surface 13 a. The light of the light supplement source enters from the first light incident surface 13c, is converted into light emitted from the first light emitting surface 13b through the light guide structure 131, and is projected to the shooting area where the camera and the lens 12 are overlapped.

The light of the light supplement source is incident from the first light incident surface 13c and totally reflected in the light guide plate 13, the light changes the original light path through the scattering effect of the light guide structure 131, the total reflection of the light in the light guide plate 13 is destroyed, the light is emitted from the first light emitting surface 13b under the effect of the light guide structure 131, and the light of the light supplement source is projected to the camera shooting area where the camera and the lens 12 are overlapped.

It can be understood that the light guide plate projects the light of the light supplement source to the camera shooting area after the camera and the lens are overlapped. That is, the first light emitting surface 13b faces the imaging area where the camera and the lens are superimposed. In other words, the first light emitting surface 13b intersects with the incident direction of the light of the camera and the lens. Therefore, the light emitted from the first light emitting surface 13b is projected to the imaging area where the camera and the lens are overlapped as much as possible, so that the object reflects the light emitted from the first light emitting surface 13b into the camera and the lens as much as possible.

Further, the light guide plate 13 abuts on the lens 12. In one embodiment, the light guide plate 13 includes a first light emitting surface 13b and an end surface connected to the first light emitting surface 13b, and the end surface abuts against an outer surface of the lens barrel of the lens 12. The first light emitting surface 13b is used for emitting the light of the light supplement source. The first light emitting surface 13b faces the imaging area where the camera and the lens 12 are superimposed. Thus, the distance between the first light emitting surface 13b and the lens 12 is small, and the light emitted from the first light emitting surface 13b is projected to the imaging area where the camera and the lens 12 are overlapped as much as possible.

In an embodiment of the present application, please refer to fig. 8, the light guide structure 131 is a spherical light guide point, and a diameter of the spherical light guide point gradually increases from a direction close to the first light incident surface 13c to a direction away from the first light incident surface 13 c. Light guide structure 131 is spherical leaded light point, and light distribution is comparatively even, and the leaded light is effectual. The light flux in the light guide plate 13 decreases from near the first light incident surface 13c to far from the first light incident surface 13c due to, for example, a loss of light traveling through the light guide plate 13 and a loss of light exiting from the light guide plate 13 during the light propagation process. The smaller the diameter of the spherical light guide point is, the less the light scattered by the spherical light guide point is; the larger the diameter of the spherical light guide point is, the more light rays are scattered by the spherical light guide point. By adopting the design, the smaller the diameter of the spherical light guide point close to the first light incident surface 13c is, the less the scattered light is, more light can be transmitted to the direction far away from the first light incident surface 13c, and the larger the diameter of the spherical light guide point far away from the first light incident surface 13c is, the more the scattered light is, so that the light intensity emitted from the first light emitting surface 13b is uniformly distributed, and the uniform light supplement is realized.

In an embodiment of the present application, please refer to fig. 8, a distance between two adjacent spherical light guide points close to the first light incident surface 13c is greater than a distance between two adjacent spherical light guide points far away from the first light incident surface 13 c. That is, the density of the spherical light guide points close to the first light incident surface 13c is greater than that of the spherical light guide points far from the first light incident surface 13 c. The denser the distribution of the spherical light guide points, the more light rays are scattered by the spherical light guide points. The spherical light guide points close to the first light incident surface 13c are distributed sparsely, the scattered light rays are less, and more light rays can be transmitted to the direction far away from the first light incident surface 13 c; the spherical light guide points far away from the first light incident surface 13c are densely distributed, and more scattered light rays are obtained. With such a design, the light intensity of the light emitted from the first light emitting surface 13b is further uniformly distributed.

In an embodiment of the present application, please refer to fig. 11-12, the light guiding structure is a V-shaped groove, and a distance between two adjacent V-shaped grooves close to the first light incident surface 13c is greater than a distance between two adjacent V-shaped grooves far from the first light incident surface 13 c. The light guide structure is a V-shaped groove, light reflected by the V-shaped groove is concentrated, and the illumination of a shot area is high. Specifically, the V-shaped groove comprises two connected reflecting surfaces, and the two reflecting surfaces form a V-shaped structure. The V-shaped grooves near the first light incident surface 13c are sparsely distributed, and the V-shaped grooves far from the first light incident surface 13c are densely distributed. With such a structure, the light intensity of the light emitted from the first light emitting surface 13b is uniformly distributed.

In one embodiment of the present application, referring to fig. 11, the vertex angle of the V-shaped groove is greater than 90 °. That is, the angle between the two reflecting surfaces of the V-shaped groove is greater than 90 °. The larger the vertex angle of the V-shaped groove is, the larger the included angle between the two reflecting surfaces of the V-shaped groove is, the more the light rays are reflected from the two reflecting surfaces, the larger the illumination of the shot area is, and the illumination of the shot object is improved.

In an embodiment of the present application, referring to fig. 1 and fig. 2, the lens 12 includes at least one lens set 121, each lens set 121 may be stacked on the camera, and each lens set 121 includes at least one lens 1211.

The focal length of the main lens is related to the optical performance of the main lens, and correspondingly, the main lens has the magnification of the main lens; the optical magnification of the electronic device is related to the magnification of the main lens itself. The magnification of the main lens and the lens 12 is related to the magnification of the lenses constituting them, and the magnification of the lenses is the ratio of the size of the image of the object passing through the lenses on the focal plane to the actual size of the object. The primary lens may include one or more lenses, thereby having different magnifications.

The lens set 121 of the embodiment of the present application includes at least one lens 1211, and therefore, each lens set 121 has different magnifications by adjusting the number of the lenses 1211 and the configuration of the lenses 1211. The different magnification ratios of the lens groups 121 means that the optical magnification ratios corresponding to different lens groups 121 are different when the same image sensor is used.

With the above arrangement, since the lens 12 includes at least one lens group 121, the lens 12 has at least one different magnification. The lens 12 is superimposed on the main lens of the camera, and has at least one different magnification. That is, by providing the lens group 121 having different magnifications, a laminated lens in which the lens 12 is laminated with the main lens of the camera head can have different magnifications. In the shooting process, the base 11 drives the lens 12 to move relative to the camera, so that different lens groups 121 can be adjusted to be overlapped with the camera for shooting. According to the above analysis, after the lens 12 is overlapped with the camera, the magnification of the main lens itself is changed due to the addition of the lens 12, so that the change of the optical magnification of the electronic device is realized. Therefore, the lens group 121 with different magnifications can be overlapped with the main lens of the camera, so that the functions of macro shooting, super-macro shooting, wide-angle shooting, long-focus shooting and the like are realized, and the user experience is improved.

In an embodiment, the external lens assembly 10 may be disposed outside the camera for overlapping shooting with the camera. The main lens of the camera is a conventional lens, not macro or ultra-macro. Taking the lens 12 including two lens groups 121 as an example, when the camera head operates alone without being overlapped with the lens groups 121, normal shooting is performed. One lens group 121 consists of a single lens 1211 or two or more lenses 1211, the working distance is 1 cm-10 cm after the lens group is superposed and combined with the main lens, and the optical magnification of the electronic equipment reaches 1: 4. The other lens group 121 also comprises a single lens 1211 or two or more lenses 1211, the working distance is 1-5 mm after the lens is overlapped and combined with the main lens, and the optical magnification of the electronic device reaches 1: 1. Can overlap the combination through lens group 121 and main camera lens according to the demand of difference when using, reach different magnification to realize that macro is shot or ultra-macro is shot, promoted user experience. The working distance is a distance from the subject to the first surface (surface closest to the subject) of the lens of the electronic device. That is, in the condition of only the main lens, the working distance refers to a distance from the subject to the first surface (surface closest to the subject) of the lens of the main lens. The working distance is a distance from the subject to a first surface (a surface closest to the subject) of the lens of the external lens under a condition that the external lens is superimposed on the main lens.

In an embodiment not shown, the base 11 comprises a through hole that can be superimposed with a camera. The light of the shot object can enter the main lens of the camera through the through hole. When the through hole is overlapped with the main lens of the camera, the optical parameters of the main lens are not changed, namely, the main lens still has the original optical magnification and can be used for directly shooting by the main lens. By the arrangement, the situation that the externally-hung lens assembly 10 needs to be detached from the electronic equipment when the main lens is used for shooting is avoided, and the operation is convenient and simple.

In an embodiment of the present application, referring to fig. 1, the light guide plate 13 is disposed around the periphery of each lens group 121. With such a structure, the light emitted from the light guide plate 13 is uniformly distributed in the peripheral space of each lens group 121. Specifically, the first light emitting surface of the light guide plate 13 may be in a shape of a runway, a plurality of gourd-shaped light emitting surfaces, a drop shape, or a polygon, such as a quadrangle, a pentagon, a hexagon, or the like.

The outer periphery of the lens group 121 refers to an outer peripheral space of the lens barrel. The lens group includes a lens barrel for accommodating the lens 1211, and the cross section of the lens barrel may be polygonal, such as quadrilateral, pentagonal, hexagonal, etc., or circular, elliptical, etc. The outer periphery of the lens group 121 refers to a peripheral space other than the outer surface of the lens barrel. For example, a space around the outer surface of the lens barrel having a circular cross section; a space around an outer surface of the lens barrel having a quadrangular cross section. The light guide plate 13 is enclosed in the periphery of each lens group 121, that is, the light guide plate 13 is enclosed in a peripheral space other than the outer surface of the lens barrel of each lens group 131.

In an embodiment of the present application, referring to fig. 8, 11, and 13, the external lens assembly 10 further includes a total internal reflection light gathering member 14, and light rays of the light supplement source enter the light guide plate 13 through reflection of the light gathering member 14.

Specifically, the light gathering member 14 includes a second light incident surface 14a and a second light emitting surface 14 b. The second light emitting surface 14b is attached to the first light incident surface 13 c. The light of the light supplement source enters from the second light incident surface 14 a. Enters the light guide plate 13 from the second light emitting surface 14 b. Since the light with a small angle emitted from the light compensating source to the first light incident surface 13c is easy to scatter out and does not enter the light guide plate 13, the light condensing element 14 makes as many light compensating sources as possible enter the light guide plate 13. Because the light gathering piece 14 is total internal reflection, more light rays can enter the light gathering piece 14 and then enter the light guide plate 13 more intensively through the coupling of the light gathering piece 14, and the light utilization rate of the light supplementing source is improved. Since the light-gathering member 14 is total internal reflection, the light is transmitted into the light guide plate 13 through the light-gathering member 14, and the light guide plate 13 can be disposed at the periphery of the lens 12, so that the volume of the light guide plate 13 can be reduced, and the light guide plate 13 can concentrate the light emitted from the space around the lens 12.

Illustratively, when the light supplement source is a flash lamp or other light supplement lamps of the electronic device, because the distance between the flash lamp or other light supplement lamps and the camera is fixed, the light gathering part 14 and the light guide plate 13 are arranged between the flash lamp or other light supplement lamps and the camera, and the light of the flash lamp or other light supplement lamps is transmitted to the light guide plate 13 through the light gathering part 14, because the light gathering part 14 is total internal reflection, the transmission loss of the light in the light gathering part 14 is very small, and the light can be emitted out by being concentrated on the first light emitting surface 13b of the light guide plate 13. Therefore, the loss of light in the transmission process is avoided, the volume of the light guide plate 13 can be effectively reduced, the light guide plate 13 concentrates on the space around the lens 12 to emit light, and the illumination of a shot area is improved.

In an embodiment of the present application, please refer to fig. 11 and 13, the light gathering member 14 further includes a light reflecting structure 141. The light of the light supplement source is reflected by the light reflecting structure 141 and enters the light guide plate 13. Specifically, the light gathering member 14 further includes a second bottom surface 14c opposite to the second light incident surface 14a, and the light reflecting structure 141 is disposed on the second bottom surface 14 c. The light reflecting structure 141 includes a light reflecting surface facing the first light incident surface 13c, and the light incident from the second light incident surface 14a enters the first light incident surface 13c through the second light emitting surface 14b by being reflected by the light reflecting surface.

In an embodiment of the present application, please refer to fig. 11, the light reflecting structures 141 are distributed along the peripheral direction of the light guide plate 13. The structure is convenient for reflecting as much light as possible into the light guide plate. Specifically, the light reflecting surfaces are distributed along the outer peripheral direction of the light guide plate 13.

The outer peripheral direction of the light guide plate 13 indicates the direction of the outer contour of the light guide plate. Specifically, the first light emitting surface of the light guide plate 13 may be in a shape of a runway, a plurality of gourd-shaped light emitting surfaces, a drop shape, or a polygon, such as a quadrangle, a pentagon, a hexagon, or the like. Illustratively, the first light emitting surface of the light guide plate 13 is a quadrilateral, and the peripheral direction of the light guide plate 13 is the quadrilateral outline direction of the first light emitting surface.

In an embodiment of the present application, referring to fig. 1, the light guide plate 13 surrounds the periphery of each lens group 121, and the light reflecting structures 141 are distributed along the peripheral direction of the light guide plate 13.

In an embodiment of the present application, please refer to fig. 8-10, the light-gathering member 14 is a total internal reflection lens. The total internal reflection lens can reflect light of the light supplementing source to the light guide plate 13 as much as possible, and the light utilization rate of the light supplementing source is improved.

In an embodiment of the present application, please refer to fig. 1, the light gathering member 14 is disposed around the periphery of the light guide plate 13. With such a structure, the second light emitting surface 14b and the first light incident surface 13c have as large a contact area as possible, and the light emitted from the light gathering member 14 enters the light guide plate 13 as much as possible.

In an embodiment of the present application, please refer to fig. 11-12, the light-gathering member 14 further includes a receiving space 14d for receiving the light-compensating source. The light gathering piece 14 forms an inwards concave accommodating space 14d, and the light supplementing source is arranged in the accommodating space 14d, so that light of the light supplementing source is conducted to the light guide plate 13 through the light gathering piece 14 as far as possible, and the light utilization rate of the light supplementing source is improved. For example, when the light supplement source is a flash lamp or other light supplement lamps of the electronic device, the flash lamp or other light supplement lamps are disposed in the accommodating space 14d, and light of the flash lamp or other light supplement lamps can be transmitted to the light guide plate 13 through the light gathering member 14 as much as possible.

In an embodiment of the present application, please refer to fig. 1 and fig. 2, the base 11 can slide relative to the camera. One of the base 11 and the body 20 of the electronic device is provided with a sliding slot 16, and the other of the base 11 and the body 20 of the electronic device is provided with a sliding rail 40 matched with the sliding slot 16. The base 11 and the body 20 of the electronic device slide through the sliding groove 16 and the sliding rail 40. The runner 16 may be a parallel groove or a dovetail groove.

It is understood that the base 11 can be separated from and connected to the electronic device by sliding the sliding groove 16 and the sliding rail 40 relative to each other, so as to detachably connect the base 11 to the electronic device.

In an embodiment of the application, not shown, the base 11 is rotatable relative to the camera head. One of the external lens assembly 10 and the body 20 of the electronic device may be provided with a rotating shaft, one end of the rotating shaft is connected to the base 11, and the other end of the rotating shaft is connected to the body 20 of the electronic device. The base 11 rotates around the axis of the rotating shaft, the axis of the rotating shaft is parallel to the axis of the camera, and the base 11 rotates in a plane perpendicular to the axis of the rotating shaft, so that the lens 12 and the camera are switched between overlapping and staggering.

It is understood that one of the external lens assembly 10 or the body 20 of the electronic device can be detached from the rotating shaft, so that the base 11 can be detachably connected to the body 20 of the electronic device. Or the external lens assembly 10 and the body 20 of the electronic device can be detached from the rotating shaft, so that the base 11 can be detachably connected to the body 20 of the electronic device. It should be noted that the connection between the rotating shaft and the main body 20 and the base 11 of the electronic device may be various ways such as clamping and screwing.

Referring to fig. 4, 5, 9, 14 and 15, in another aspect, the present application provides an electronic device, where the electronic device 1000 includes a main body 20, a second light supplement source 30 disposed on the main body 20, a camera (not shown) disposed on the main body 20, and the external lens assembly 10 in any one of the above embodiments. The base 11 is detachably connected with the body 20, and the base 11 can move relative to the camera. The supplementary light source includes a second supplementary light source 30.

In an embodiment, referring to fig. 1 to 5, the body 20 is provided with a slide rail 40, the base 11 is provided with a slide groove 16, and the external lens assembly 10 and the body 20 of the electronic device can slide relatively. The second light supplement source 30 is disposed on a side of the light guide plate 13 close to the camera. That is, the light of the second light supplement source 30 enters from the end face of the light guide plate 13 close to the camera, and the light entering the light guide plate 13 exits from the end face of the light guide plate 13 far from the camera. With this structure, the light emitted from the light guide plate 13 is uniformly distributed.

Referring to fig. 11 and 12, in another embodiment, the external lens assembly 10 includes a total internal reflection light-collecting member 14, the light-collecting member 14 includes a receiving space 14d for receiving the second light supplement source 30, and the light of the second light supplement source 30 enters the light guide plate 13 through the light-collecting member 14.

In an embodiment of the present application, referring to fig. 2, the external lens assembly 10 further includes a first light supplement source 15 disposed on the base 11, and the light supplement source includes the first light supplement source 15. The first light supplement source 15 is disposed on the base 11 to provide light to the light guide plate 13.

In an embodiment, referring to fig. 2, the first light supplement source 15 is disposed on a side of the light guide plate 13 close to the camera. The light of the first light supplement source 15 enters from the end face of the light guide plate 13 close to the camera, and the light entering the light guide plate 13 exits from the end face of the light guide plate 13 far from the camera.

In an embodiment not shown, the light guide plate 13 includes a first bottom surface 13a, a first light emitting surface 13b, a first light incident surface 13c, and a plurality of light guide structures 131. The first bottom surface 13a is close to the camera. The first light emitting surface 13b is disposed opposite to the first bottom surface 13 a. The first light incident surface 13c is adjacent to the first light emitting surface 13b and the first bottom surface 13 a. The first light supplement source 15 is disposed on the base 11 near the first light incident surface 13 c. With the structure, the thickness of the external lens assembly 10 can be reduced, that is, the length of the external lens assembly 10 along the axial direction of the lens 12 is reduced, the first light supplement source 15 is conveniently hidden, and the first light supplement source is not easy to see through the light guide plate 13.

In yet another embodiment, the externally hung lens assembly 10 includes a total internal reflection light collector 14. With this structure, the first light supplement source 15 is disposed on the base 11 near the second light incident surface 14 a. With this structure, the first light supplement source 15 can be hidden. Since the second light emitting surface 14b faces the light guide plate, not the imaging area where the camera and the lens 12 are stacked, that is, the second light emitting surface 14b does not face the external environment, but is attached to the first light incident surface 13c, in other words, the light collecting element 14 does not emit light to the external environment, the first light supplement source 15 can be hidden.

It is understood that the first light supplement source 15 or the second light supplement source 30 may be one or more, for example, one, two, three or four. When there are a plurality of first light supplement sources 15 or second light supplement sources 30, the luminous intensity of each first light supplement source 15 or second light supplement source 30 can be separately and independently adjusted. So as to independently supplement light to the camera shooting area after the camera and the lens 12 are overlapped. Due to the design, the luminous intensity of the main light source 12 and the light supplement source 161 can be independently adjusted according to the use condition of the electronic device 1000, so that uniform light supplement for the shooting area is realized.

The first Light supplement source 15 or the second Light supplement source 30 may be a single or a plurality of independent LEDs (Light emitting diodes) forming a plurality of point Light sources. A plurality of LEDs may form a line light source. The LEDs may be point-contact LEDs, patch LEDs, etc. Other types of light sources than LEDs are also possible, such as EL (electro luminescence). The type of light source is not limited in this application.

It can be understood that the wavelength band of the light generated by the first supplementary light source 15 or the second supplementary light source 30 in the embodiment of the present application is adapted to the wavelength band of the light that needs to be collected by the camera. For example, when the camera needs to collect infrared light, the first light supplement source 15 or the second light supplement source 30 radiates infrared light. For another example, when the light collected by the camera is visible light, the first light supplement source 15 or the second light supplement source 30 radiates the visible light.

In an embodiment of the present application, the electronic device 1000 further includes a positioning portion (not shown) disposed on the main body 20 and a limiting portion (not shown) disposed on the base 11. The lens 12 is superimposed on the camera head under the condition that the positioning portion and the stopper portion coincide. The lens 12 is staggered from the camera head under the condition that the positioning portion is staggered from the limiting portion. By using the cooperation between the positioning portion and the limiting portion, the overlapping or staggering state of the lens 12 and the camera can be quickly and efficiently positioned.

It is understood that, if the lens barrel 12 includes a plurality of lens sets 121, the limiting portion or the positioning portion may be a plurality of. In a specific embodiment, each lens group 121 corresponds to one limiting portion, when one of the limiting portions overlaps with the positioning portion, the lens group 121 corresponding to the limiting portion overlaps with the camera, when another lens group 121 needs to be replaced, the base 11 moves, such as slides or rotates, relative to the camera, the lens group 121 and the camera are staggered, and the limiting portion corresponding to the lens group 121 and the positioning portion are staggered; when the other limiting portion is overlapped with the positioning portion, the lens group 121 corresponding to the limiting portion is overlapped with the camera. In another embodiment, the base 11 is provided with a limiting portion, and the body is provided with a plurality of positioning portions, which have the same principle as the above principle and are not described herein again.

In an embodiment of the present application, one of the positioning portion and the limiting portion is a protrusion, and the other of the positioning portion and the limiting portion is a groove. Through the cooperation between arch and the recess, the stack or the state of staggering of quick, high-efficient location camera lens 12 and camera. The structure is simple and easy to realize. There is a slight mechanical force between the protrusion and the groove, and the protrusion can be staggered with the groove only when a certain degree of force is applied, so that the lens 12 is staggered with the camera, and therefore, the protrusion can be used for limiting the relative movement between the base 11 and the electronic device to a certain degree.

In an embodiment of the present application, the electronic device 1000 further includes a first mark (not shown) located on the body 20 and a second mark (not shown) located on the base 11. The lens 12 is superimposed on the camera under the condition that the first mark coincides with the second mark. The lens 12 is displaced from the camera under the condition that the first mark is displaced from the second mark. Other structures for positioning are avoided being arranged on the body 20 and the base 11, and the process and the cost are saved. For example, the first mark and the second mark may be dots, that is, the first mark is a dot, the second mark is a dot having the same radius as the first mark, and the first mark may coincide with the second mark. Of course, the first comparison and second indicia may also be oval dots, drop shapes, lines, etc. In the embodiment of the present application, the shapes of the first mark and the second mark are not limited as long as the first mark and the second mark can be overlapped. It can be understood that the superposition may be complete superposition or partial superposition, and only all or part of the first mark may be superposed with the second mark, so that the superposed state of the lens 12 and the camera may be located through the superposition condition of the first mark and the second mark.

It is understood that if the lens 12 includes a plurality of lens groups, the first mark or the second mark may be a plurality of marks.

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. The utility model provides an external lens subassembly for with the camera stack shooting of electronic equipment, its characterized in that includes:

the lens is arranged on the base and can be overlapped with the camera;

2. The externally hung lens assembly according to claim 1, wherein the light guide plate comprises:

a first light emitting surface;

the light guide structures are arranged on the first bottom surface;

3. The externally-hung lens assembly according to claim 2, wherein the light guide structure is a spherical light guide point, and the diameter of the spherical light guide point gradually increases from a position close to the first light incident surface to a position away from the first light incident surface.

4. The externally-hung lens assembly according to claim 3, wherein a distance between two adjacent spherical light guide points close to the first light incident surface is greater than a distance between two adjacent spherical light guide points far away from the first light incident surface.

5. The externally-hung lens assembly according to claim 2, wherein the light guide structure is a V-shaped groove, and a distance between two adjacent V-shaped grooves close to the first light incident surface is greater than a distance between two adjacent V-shaped grooves far from the first light incident surface.

6. The externally hung lens assembly as recited in claim 5, wherein the V-shaped groove has an apex angle greater than 90 °.

7. The externally-hung lens assembly as recited in any one of claims 1 to 6, wherein the lens comprises at least one lens group, each lens group being stackable with the camera, each lens group comprising at least one lens.

8. The externally hung lens assembly of claim 7, wherein the light guide plate is disposed around the periphery of each of the lens groups.

9. The externally-hung lens assembly according to any one of claims 1 to 6, further comprising a total internal reflection light-gathering member, wherein the light of the light supplement source enters the light guide plate by reflection of the light-gathering member.

10. The externally hung lens assembly according to claim 9, wherein the light collecting member further comprises a light reflecting structure, and the light of the light compensating source is reflected by the light reflecting structure to enter the light guide plate.

11. The externally hung lens assembly according to claim 10, wherein the light reflecting structures are distributed along a peripheral direction of the light guide plate.

12. The externally hung lens assembly of claim 9, wherein the light gathering member is a total internal reflection lens.

13. The externally hung lens assembly according to claim 9, wherein the light collecting member is enclosed around the periphery of the light guide plate.

14. The externally hung lens assembly according to claim 9, wherein the light gathering member further comprises an accommodating space for accommodating the light compensating source.

15. The externally-hung lens assembly according to any one of claims 1 to 6, wherein the base is slidable relative to the camera;

alternatively, the base may be rotatable relative to the camera.

16. The externally-hung lens assembly according to any one of claims 1 to 6, further comprising a first light supplement source disposed on the base, wherein the light supplement source comprises the first light supplement source.

17. An electronic device, comprising a body, a second light supplement source disposed on the body, a camera disposed on the body, and the add-on lens assembly of any one of claims 1 to 16, wherein the light supplement source comprises the second light supplement source.

18. The electronic device according to claim 17, further comprising a positioning portion provided on the body and a limiting portion provided on the base, wherein the lens is superimposed on the camera head under a condition that the positioning portion and the limiting portion coincide, and the lens is displaced from the camera head under a condition that the positioning portion and the limiting portion are displaced.

19. The electronic device according to claim 18, wherein one of the positioning portion and the position limiting portion is a protrusion, and the other of the positioning portion and the position limiting portion is a groove.

20. The electronic device of claim 17, further comprising a first mark on the body and a second mark on the base, wherein the lens is superimposed on the camera when the first mark and the second mark are coincident, and wherein the lens is offset from the camera when the first mark and the second mark are offset.