CN112965321A - Camera device and mobile terminal - Google Patents

Camera device and mobile terminal Download PDF

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Publication number
CN112965321A
CN112965321A CN202110259964.8A CN202110259964A CN112965321A CN 112965321 A CN112965321 A CN 112965321A CN 202110259964 A CN202110259964 A CN 202110259964A CN 112965321 A CN112965321 A CN 112965321A
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CN
China
Prior art keywords
light
light guide
camera device
lens
cover plate
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Granted
Application number
CN202110259964.8A
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Chinese (zh)
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CN112965321B (en
Inventor
林墨洲
韦怡
张百成
余爱翔
吴继炎
梁镓俊
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to CN202110259964.8A priority Critical patent/CN112965321B/en
Publication of CN112965321A publication Critical patent/CN112965321A/en
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Publication of CN112965321B publication Critical patent/CN112965321B/en
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00Special procedures for taking photographs; Apparatus therefor
    • G03B15/02Illuminating scene
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00Special procedures for taking photographs; Apparatus therefor
    • G03B15/02Illuminating scene
    • G03B15/06Special arrangements of screening, diffusing, or reflecting devices, e.g. in studio
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00Details of cameras or camera bodies; Accessories therefor
    • G03B17/02Bodies

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)

Abstract

The embodiment of the application provides a camera device and a mobile terminal, the camera device comprises a lens assembly, a light guide assembly and a cover plate, the lens assembly comprises a lens barrel and at least one lens arranged in the lens barrel, the light guide assembly is provided with an injection port, the top of the light guide assembly is provided with a bearing surface surrounding the periphery of the injection port and a light emergent surface surrounding the periphery of the bearing surface, in the height direction of the light guide assembly, the height of the bearing surface is lower than that of the light emergent surface, one end of the lens barrel, close to the object side, is located in the injection port, the cover plate covers the injection port, and the cover plate is abutted to the bearing. The camera device of this application embodiment, on the one hand, the apron is less relatively, and the compatibility of apron is better, and on the other hand, the distance between apron and the lens is less relatively, makes the foreign matter between apron and the lens can keep away from the focus of lens subassembly thing side more to improve the tolerance of lens subassembly to foreign matter such as white point acting as a contrast.

Description

Camera device and mobile terminal
Technical Field
The application relates to the technical field of optical imaging, in particular to a camera device and a mobile terminal.
Background
Mobile terminal uses the cell-phone as an example, and the cell-phone includes the camera, is used for light guide plate and the apron for the camera light filling, and the light guide plate jets out the light filling light beam to the region of making a video recording of camera to the light filling, the camera is so that form images in the formation of image light beam jet-in, and generally, the apron covers light guide plate and camera, and like this, the light filling light beam need see through the apron and jets out to the region of making a video recording, and the formation of image light beam need see through the apron and jet into to the camera in.
Disclosure of Invention
In view of this, an embodiment of the present application provides a camera device and a mobile terminal with a small cover plate area, and a technical solution of the embodiment of the present application is implemented as follows:
an aspect of an embodiment of the present application provides a camera device, including:
the lens assembly comprises a lens barrel and at least one lens arranged in the lens barrel;
the lens barrel comprises a light guide assembly, a lens barrel and a lens barrel, wherein an injection port is formed in the light guide assembly, a bearing surface surrounding the periphery of the injection port and a light emitting surface surrounding the periphery of the bearing surface are formed at the top of the light guide assembly, the height of the bearing surface is lower than that of the light emitting surface in the height direction of the light guide assembly, and one end, close to the object side, of the lens barrel is positioned in the injection port; and
the cover plate covers the injection port and is abutted to the bearing surface.
In some embodiments, the light guide assembly includes a light emitting element having the entrance, a portion of the top surface of the light emitting element surrounding the entrance is recessed toward the bottom side to form the supporting surface, and another portion of the top surface of the light emitting element surrounding the supporting surface is the light emitting surface.
In some embodiments, the light guide assembly includes at least one light incident member disposed on the peripheral side surface of the light emitting member, the light incident member has a light incident surface, the light incident surface extends along the peripheral side surface of the light emitting member in the radial direction of the lens assembly, and the light incident surface is connected to the top surface of the light incident member and the bottom surface of the light incident member.
In some embodiments, the light emitting member includes a light guide pillar formed with the entrance and an annular light guide ring surrounding the periphery of the light guide pillar, and the top surface of the annular light guide ring is lower than the top surface of the light guide pillar in the height direction of the light guide assembly; the light guide column surrounds part of the top surface of the injection port and is recessed towards the bottom side to form the bearing surface, the other part of the top surface of the light guide column surrounding the bearing surface is the light emitting surface, and the light incident piece is arranged on the peripheral side surface of the annular light guide ring.
In some embodiments, the annular light guide ring surrounds the bottom of the light guide post; and/or the presence of a gas in the gas,
the part of the peripheral side surface of the annular light guide ring extends outwards along the circumferential direction to form the light incident part, and the end surface of the tail end of the light incident part is the light incident surface; and/or the presence of a gas in the gas,
the peripheral side surface of the light inlet part is a convex cambered surface, and the peripheral side surface of the light inlet part and the peripheral side surface of the annular light guide ring are in smooth transition.
In some embodiments, the number of the light incident parts is multiple, and the multiple light incident parts are uniformly distributed along the circumferential direction of the light emergent part at intervals.
In some embodiments, the light guide assembly includes a scattering structure disposed on a bottom surface of the light outlet member, and the scattering structure is capable of scattering fill-in light; and taking a plane perpendicular to the optical axis of the lens assembly as a projection plane, wherein the projection of the light-emitting surface is positioned in the projection of the scattering structure.
In some embodiments, the scattering structure includes a plurality of serrations spaced circumferentially along the lens assembly, the serrations extending radially of the lens assembly.
In some embodiments, a light blocking groove is formed on the bottom surface of the light emitting piece and is located at the position of the light emitting piece; and a plane perpendicular to the optical axis of the lens assembly is taken as a projection plane, and the outer edge line of the light blocking groove is positioned on the radial outer side of the outer edge line of the light emergent plane.
In some embodiments, the light guide assembly includes a support pillar formed with the entrance and a light guide body sleeved outside the support pillar, and a top surface of the support pillar is lower than a top surface of the light guide body in a height direction of the light guide assembly; the bearing surface is formed on the top surface of the supporting column, and the light emergent surface is formed on the top surface of the light guide body.
In some embodiments, the light guide assembly comprises an annular skirt surrounding the periphery of the light guide body, and a top surface of the annular skirt is lower than a top surface of the light guide body in a height direction of the light guide assembly; and the light supplementing light enters the light guide body from the bottom surface of the annular skirt.
In some embodiments, the annular skirt surrounds a bottom of the light guide.
In some embodiments, the minimum distance between the lens closest to the cover plate and the cover plate is between 0.05mm and 0.4 mm; and/or the presence of a gas in the gas,
and a plane perpendicular to the optical axis of the lens assembly is taken as a projection plane, the projection shape of the cover plate is circular, and the diameter of the cover plate is between 6mm and 15 mm.
In some embodiments, the cover plate has a visible region and a light-shielding region surrounding the periphery of the visible region, and the light transmittance of the visible region is greater than that of the light-shielding region; and taking a plane vertical to the optical axis of the lens assembly as a projection plane, wherein the projection of the lens is positioned in the projection of the visible area.
In some embodiments, the light guide assembly is fixedly connected to the lens barrel, and the cover plate is fixedly connected to the light guide assembly.
In some embodiments, the cover plate is hermetically bonded to the bearing surface, and the outer peripheral side of the lens barrel extends toward the bottom side of the light guide assembly to form an annular flange, and the annular flange is hermetically bonded to the bottom surface of the light guide assembly.
In some embodiments, the camera device includes a light blocking layer disposed on an inner peripheral sidewall of the entrance opening.
Another aspect of the embodiments of the present application provides a mobile terminal, including:
the camera device of any one of the above; and
the shell, the shell is formed with logical light mouth, the camera device is located in the shell, the apron set up in logical light mouth department.
The camera device that this application embodiment provided, light filling light follow the plain noodles and jet out to the region of making a video recording of lens subassembly, and light filling light can illuminate the object of being shot in the region of making a video recording to improve the luminance of being shot the object, realize the light filling. Imaging light reflected by a shot object is transmitted into the lens assembly through the cover plate so that the lens assembly can shoot images. On the one hand, the cover plate covers the injection port, and the cover plate is abutted to the bearing surface, so that the cover plate can be made to be relatively small, and the compatibility of the cover plate is better. On the other hand, the height of the bearing surface is lower than that of the light-emitting surface, and one end, close to the object side, of the lens barrel is located in the injection port, so that the distance between the cover plate and the lens is relatively small, and therefore, by shortening the distance between the lens and the cover plate, foreign matters between the cover plate and the lens can be far away from the focus of the object side of the lens assembly, tolerance of the lens assembly on the foreign matters such as white spots, broken filaments and the like is improved, adverse effects caused by the foreign matters are reduced, and the size of the camera device in the height direction is small.
Drawings
Fig. 1 is a schematic structural diagram of a camera device in an embodiment of the present application;
FIG. 2 is a schematic diagram of the structure shown in FIG. 1 from another perspective;
FIG. 3 is an exploded schematic view of the structure shown in FIG. 1;
FIG. 4 is a schematic diagram of the structure shown in FIG. 1 from yet another perspective;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is a schematic structural diagram of a light guide assembly according to an embodiment of the present disclosure;
FIG. 7 is a schematic diagram of the structure shown in FIG. 6 from another perspective;
FIG. 8 is a schematic diagram of the structure shown in FIG. 6 from yet another perspective;
fig. 9 is a schematic structural diagram of another camera device in the embodiment of the present application;
fig. 10 is a schematic structural diagram of a cover plate in an embodiment of the present application.
Description of the reference numerals
A lens assembly 10; a lens barrel 11; an annular flange 111; a light guide member 20; an injection port 20 a; a carrying surface 20 b; a light exit surface 20 c; a light emitting member 21; a light-blocking groove 21 a; a light guide pillar 211; an annular light guide ring 212; a light incident member 22; a light incident surface 22 a; the outer peripheral side surface 22b of the light incident member; a scattering structure 23; serrations 231; a support column 24; an annular boss 241; a light guide 25; an annular skirt 26; a cover plate 30; a visible area 31; a light-shielding region 32; the enclosed space 100 a; a flexible circuit board 40.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail with reference to the accompanying drawings, it should be noted that in the embodiments of the present application, directions "circumferential direction" is as shown in fig. 4, directions "top", "bottom", "height direction" is as shown in fig. 5, and the directions or positional relationships in the description of the embodiments of the present application are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific direction, be configured and operated in a specific direction, and should not be considered as limiting the embodiments of the present application, and all other embodiments obtained by a person having ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.
Referring to fig. 1 to 5 and fig. 9, an aspect of the present disclosure provides a camera device, which includes a lens assembly 10, a light guide assembly 20 and a cover plate 30, where the lens assembly 10 includes a lens barrel 11 and at least one lens disposed in the lens barrel 11, the light guide assembly 20 is formed with an entrance opening 20a, a bearing surface 20b surrounding the periphery of the entrance opening 20a and a light emitting surface 20c surrounding the periphery of the bearing surface 20b are formed at the top of the light guide assembly 20, in a height direction of the light guide assembly 20, the height of the bearing surface 20b is lower than that of the light emitting surface 20c, one end of the lens barrel 11 near an object side thereof is located in the entrance opening 20a, the cover plate 30 covers the entrance opening 20a, and the cover plate 30 abuts against the bearing surface 20 b. That is, the light emitting surface 20c faces the object side of the lens assembly 10, and the cover plate 30 is located at the object side of the lens assembly 10.
In the camera device according to the embodiment of the application, the light supplementing light is emitted from the light emitting surface 20c to the image pickup area of the lens assembly 10, and the light supplementing light can illuminate the shot object in the image pickup area, so that the brightness of the shot object is improved, and the light supplementing is realized. Imaging light reflected by the subject is incident into the lens assembly 10 through the cover plate 30 so that the lens assembly captures an image. On the one hand, the cover plate 30 covers the injection opening 20a, and the cover plate 30 abuts against the bearing surface 20b, so that the cover plate 30 can be made relatively small, and the compatibility of the cover plate 30 is better. On the other hand, the height of the bearing surface 20b is lower than the height of the light emitting surface 20c, and the end of the lens barrel 11 close to the object side thereof is located in the incident port 20a, so that the distance between the cover plate 30 and the lens is relatively small, and thus, by reducing the distance between the lens and the cover plate 30, not only can foreign matters between the cover plate 30 and the lens be further away from the focus of the lens assembly 10 at the object side, thereby improving the tolerance of the lens assembly 10 to foreign matters such as white spots, broken filaments and the like, reducing the adverse effects caused by the foreign matters, but also making the size of the camera device in the height direction small.
Taking the application of the camera device to the mobile terminal as an example, the mobile terminal provided in the embodiment of the present application includes, but is not limited to, a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a portable computer, and the like. The mobile terminal comprises the camera device and a shell in any embodiment of the application, the shell is provided with a light through port, the camera device is located in the shell, and the cover plate 30 is arranged at the light through port.
In the mobile terminal of the embodiment of the present application, the cover plate 30 covers the entrance opening 20a to protect the lens assembly 10 from damage. The light supplementing light rays are emitted to the shooting area through the light passing port, and the imaging light rays enter the lens assembly 10 through the light passing port. The distance between the cover plate 30 and the lens is relatively small, so that the mobile terminal can be more light and thin.
In one embodiment, the top of the light guide assembly 20 and the cover plate 30 together enclose the light opening. The light exit surface 20c is located at the light passing opening. Thus, the light emitting surface 20c is close to the object to be photographed for light supplement.
In an embodiment, referring to fig. 1 to 4, the camera device further includes a flexible circuit board 40 and an image sensor. The flexible circuit board 40 and the image sensor are both located on the image side of the lens assembly 10, during shooting, imaging light of a shot object enters the lens assembly 10 and then reaches the image sensor, photons in the imaging light strike the image sensor to generate movable charges, which are internal photoelectric effects, and the movable charges are collected to form an electric signal. The flexible circuit board 40 electrically connects the image sensor and a main board of the mobile terminal. The mainboard is provided with an A/D converter (analog-to-Digital converter) and a DSP (Digital Signal Processor), the A/D converter converts the electric signals into Digital signals, and the Digital signals are processed by the DSP. And finally, the image is transmitted to a screen of the mobile terminal to be displayed, namely, the shooting of the shot object is realized.
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 lens assembly 10 in the embodiment of the present application may be a macro lens or a macro lens, that is, the lens assembly 10 may be used for macro or macro photography. Macro or ultra-macro photography refers to photographing with a large magnification when a lens assembly is close to a subject. The macro is generally a distance between the lens assembly 10 and the subject of 2.5cm to 10cm, and the macro is generally a distance between the lens assembly 10 and the subject of 1cm or less. When the lens assembly 10 provided by the embodiment of the present application is used for macro or ultra-macro shooting, shooting is performed at a large magnification, for example, shooting at 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.
In the embodiment of the present application, when the lens assembly 10 is used for macro or ultra-macro shooting, since the light emitting surface 20c surrounds the periphery of the lens assembly 10, the distance between the lens assembly 10 and the object to be shot is reduced, the distance between the light emitting surface 20c and the object to be shot is reduced synchronously, and the light supplementing light emitted from the light emitting surface 20c can illuminate the object to be shot, thereby ensuring shooting of the camera device.
The specific shapes of the supporting surface 20b and the light emitting surface 20c are not limited, and for example, in an embodiment, referring to fig. 3 and 4, a plane perpendicular to the optical axis of the lens assembly 10 is taken as a projection plane, the projection pattern of the supporting surface 20b is annular, and the projection pattern of the light emitting surface 20c is also annular. Thus, after the light guide assembly 20 is illuminated, the light emitting surface 20c is a bright ring which emits light uniformly, so as to fill light uniformly into each block of the image pickup area. In another embodiment, the projected pattern of the carrying surface 20b is a sector arc. In another embodiment, the projection pattern of the light emitting surface 20c is also fan-shaped. The carrying surface 20b and the light emitting surface 20c may have other shapes.
For example, in an embodiment, referring to fig. 1 to 5, the light guide assembly 20 includes a light emitting element 21 having an entrance 20a, a portion of the top surface of the light emitting element 21 surrounding the entrance 20a is recessed toward the bottom side to form a supporting surface 20b, and another portion of the top surface of the light emitting element 21 surrounding the supporting surface 20b is a light emitting surface 20 c. The light emitting surface 20c and the carrying surface 20b are both formed on the light emitting element 21, and the structure is simple.
The light guiding assembly 20 may have any light incident mode, for example, in an embodiment, referring to fig. 1 to 4, the light guiding assembly 20 includes at least one light incident member 22 disposed on the outer peripheral side surface of the light emitting member 21, the light incident member 22 has a light incident surface 22a, the light incident surface 22a extends from the outer peripheral side surface of the light emitting member 21 along the radial direction of the lens assembly 10, and the light incident surface 22a connects the top surface of the light incident member 22 and the bottom surface of the light incident member 22.
The light supplementing light rays are emitted into the light incident part 22 from the light incident surface 22a, and the light supplementing light rays enter the light emitting part 21 approximately along the circumferential direction of the lens assembly 10, so that the situation that the brightness of the light emitting surface 20c at the position of the light incident surface 22a is too high, that is, the situation that the brightness of the light emitting surface 20c at the position of the light supplementing lamp is too high, and the degree of explosion of the lamp is reduced can be avoided. The light emitting element 21 can disperse the supplementary light, so that the supplementary light is prevented from being emitted in a concentrated manner, the uniformity of the supplementary light emitted from the light emitting surface 20c is better, the problem of uneven brightness of the light emitting surface 20c is further avoided, and the appearance uniformity of the light emitting surface 20c and the uniformity of the supplementary light in a shooting area are further improved.
It should be noted that the uniformity of the appearance of the light-emitting surface 20c refers to the brightness uniformity of the light-emitting surface 20c after the light guide assembly 20 is illuminated. The fill-in Light is emitted by a fill-in Light lamp, which includes but is not limited to a Light Emitting Diode (LED). After the fill light is turned on, the light guide assembly 20 is illuminated.
In one embodiment, the light supplement lamp may be a side light emitting lamp. The side light-emitting lamp is characterized in that light supplementing light rays are emitted from the side face of the side light-emitting lamp, the side face of the side light-emitting lamp is connected with the top face and the bottom face of the side light-emitting lamp, and the electric connection end of the side light-emitting lamp is located on the bottom face of the side light-emitting lamp. The side surfaces of the side-emitting lamps face the light incident surface 22 a.
The specific structure of the light-emitting member is not limited, and in an exemplary embodiment, please refer to fig. 1 to 4, the light-emitting member 21 includes a light guide pillar 211 formed with an entrance 20a and an annular light guide ring 212 surrounding the periphery of the light guide pillar 211, and in the height direction of the light guide assembly 20, the top surface of the annular light guide ring 212 is lower than the top surface of the light guide pillar 211; the top surface of the light guide pillar 211 surrounding the injection opening 20a is recessed toward the bottom side to form a carrying surface 20b, the other top surface of the light guide pillar 211 surrounding the carrying surface 20b is a light emitting surface 20c, and the light incident member 22 is disposed on the outer peripheral side surface of the annular light guide ring 212. After the light supplementing light enters the annular light guiding ring 212 from the light incident element 22, the light supplementing light is further dispersed by the annular light guiding ring 212, and the light supplementing light uniformly distributed in the annular light guiding ring 212 enters the light guiding column 211, so that the uniformity of the light supplementing light emitted from the light emitting surface 20c is better, the problem of uneven brightness of the light emitting surface 20c is further avoided, and the appearance uniformity of the light emitting surface 20c and the uniformity of the light supplementing light for a shooting area are further improved.
In an embodiment, referring to fig. 1 and 3, a plane perpendicular to the optical axis of the lens assembly 10 is taken as a projection plane, and the projection outer contour of the light guide pillar 211 is circular, that is, the light guide pillar 211 is substantially cylindrical.
In an embodiment, the light guide pillar 211 and the cover plate 30 jointly seal the light through opening, so that the annular light guide ring 212 and the light incident member 22 can be hidden in the housing, and when a user views the camera device from the object side of the lens assembly 10, the number of the light guide assembly 20 seen by the user is reduced as much as possible, thereby further improving the aesthetic feeling.
In order to further improve the uniformity of the appearance of the light emitting surface 20c and the uniformity of light supplement to the image pickup region, in an embodiment, please refer to fig. 3 and 5, the annular light guiding ring 212 surrounds the bottom of the light guiding column 211. Thus, in the height direction of the light guide assembly 20, the distance between the light incident surface 22a and the light emitting surface 20c is further increased, so as to further reduce the degree of lamp explosion.
The specific structural shape of the light incident member 22 is not limited, and in an embodiment, referring to fig. 1 to 4, a portion of the outer peripheral side surface of the annular light guiding ring 212 expands outward along the circumferential direction to form the light incident member 22, and an end surface of the light incident member 22 is a light incident surface 22 a. Thus, the area of the light incident surface 22a is larger, so that the fill-in light enters the light incident element 22 from the light incident surface 22 a.
In order to reduce the loss of the light-compensating light on the light incident element 22, in an embodiment, please refer to fig. 1 to 4, the peripheral side surface 22b of the light incident element is a convex arc surface, and the peripheral side surface 22b of the light incident element and the peripheral side surface of the annular light guiding ring 212 are in smooth transition. Specifically, the outer edge of the peripheral side surface 22b of the light incident member is connected to the top surface of the light incident member 22, the bottom surface of the light incident member 22, and the light incident surface 22a, respectively. Thus, a sharp corner is prevented from being formed on the light incident member 22, and loss in the light supplement light propagation process is reduced.
The specific structural shape of the light incident part 22 is not limited, and in an exemplary embodiment, referring to fig. 1, fig. 3 and fig. 4, a plane perpendicular to the optical axis of the lens assembly 10 is taken as a projection plane, the light incident part 22 is substantially in a shape of a fin, and a contour line of an outer peripheral side surface of the light incident part is a convex arc line protruding outward.
The number of the light incident members 22 is not limited, and for example, in an embodiment, referring to fig. 1 and fig. 4, the number of the light incident members 22 is multiple, so that more supplementary light rays can enter the light guide assembly 20, thereby improving the overall brightness. A plurality of light incident parts 22 are uniformly distributed along the circumferential direction of the light emergent part 21 at intervals, so that the light supplementing uniformity is improved. Illustratively, the number of the light incident members 22 is two, and the two light incident members 22 are uniformly distributed along the circumferential direction of the light exit member 21. In another embodiment, the number of the light incident members 22 is one.
In the present embodiment, the number of the plurality of the fingers is two or more. For example, the number of the light incident members 22 is between 2 and 20. Therefore, the uniformity and the intensity of the light supplement can be considered.
In an embodiment, referring to fig. 2, 7 and 8, the light guide assembly 20 includes a scattering structure 23 disposed on a bottom surface of the light emitting element 21, and the scattering structure 23 can scatter the supplementary light; taking a plane perpendicular to the optical axis of the lens assembly 10 as a projection plane, the projection of the light-emitting surface 20c is located in the projection of the scattering structure 23. The light supplement light is emitted from the light emitting surface 20c to the image pickup area of the lens assembly 10 after being scattered by the scattering structure 23, so that the illumination of the object to be photographed is increased, and light supplement is realized. The projection of the light emitting surface 20c is located within the projection range of the scattering structure 23, so that the light supplement light emitted from the light emitting surface 20c is scattered by the scattering structure 23, and thus, the light supplement light can be prevented from being too concentrated, the phenomenon of uneven brightness on the light emitting surface 20c is avoided, and the appearance uniformity of the light emitting surface 20c and the light supplement uniformity of a shooting area are further improved.
The specific structural shape of the scattering structure 23 is not limited, and for example, in an embodiment, referring to fig. 2, 7 and 8, the scattering structure 23 includes a plurality of saw teeth 231 spaced along the circumference of the lens assembly 10, and the saw teeth 231 extend along the radial direction of the lens assembly 10. The saw teeth 231 change the propagation direction of the fill-in light, so that the fill-in light is distributed dispersedly to improve the uniformity of the fill-in light distribution.
In an embodiment, referring to fig. 2, fig. 5, fig. 7 and fig. 8, a light blocking groove 21a is formed on a bottom surface of the light emitting element 21, where the light entering element 22 is located; the outer edge line of the light blocking groove 21a is located radially outside the outer edge line of the light exit surface 20c, taking a plane perpendicular to the optical axis of the lens assembly 10 as a projection plane. That is, a plane perpendicular to the optical axis of the lens assembly 10 is used as a projection plane, at least a portion of the projection of the light blocking groove 21a is located between the projection of the light incident element 22 and the projection of the light emitting surface 20c, and since the luminance of the light emitting surface 20c where the light incident element 22 is located is higher, a lamp explosion phenomenon is easily caused. The light blocking groove 21a can reduce the supplementary lighting light that directly enters the light outlet member 21 at the position of the light inlet member 22, and plays a role in blocking light, so that the brightness of the light outlet surface 20c close to the light inlet member 22 is balanced with the brightness of the light outlet surface 20c far from the light inlet member 22, thereby improving the appearance uniformity of the light outlet surface 20c and the supplementary lighting uniformity of the shooting area.
In one embodiment, referring to fig. 5, 7 and 8, the light blocking groove 21a is formed on the bottom surface of the annular light guiding ring 212, for example, the bottom surface of the annular light guiding ring 212 is recessed toward the top side to form the light blocking groove 21a, and further, the light blocking groove 21a is located radially outside the scattering structure 23.
In one embodiment, the base material of the light incident element 22 and the light emergent element 21 includes, but is not limited to, plastic, silicon gel, and the like.
In one embodiment, the light incident element 22 and the light emergent element 21 are integrally formed. For example, the light incident member 22 and the light emitting member 21 are integrally injection molded. Thus, the light guide assembly 20 has a simple structure and manufacturing process and is low in cost.
In one embodiment, referring to fig. 9, the light guide assembly 20 includes a supporting column 24 having an entrance 20a and a light guide 25 sleeved outside the supporting column 24, wherein a top surface of the supporting column 24 is lower than a top surface of the light guide 25 in a height direction of the light guide assembly 20; the carrying surface 20b is formed on the top surface of the supporting pillar 24, and the light emitting surface 20c is formed on the top surface of the light guide 25. The cover plate 30 is supported on the supporting columns 24, so that the dependence of the lens assembly 10 on the light guide body 25 is reduced, and the light guide body 25 can be designed separately, for example, the supporting columns 24 and the light guide body 25 are separate structures, so that the design requirement on the light guide body 25 is reduced. On the other hand, since the supporting column 24 is located between the light guide 25 and the lens barrel 11, the light supplement light is prevented from being projected to the lens assembly 10 through the inner peripheral sidewall of the light guide 25, thereby preventing a glare (flare) phenomenon.
In one embodiment, referring to fig. 9, the light guide assembly 20 includes an annular skirt 26 surrounding the periphery of the light guide 25, and in the height direction of the light guide assembly 20, the top surface of the annular skirt 26 is lower than the top surface of the light guide 25, and the light supplement light enters the light guide 25 from the bottom surface of the annular skirt 26. The annular skirt 26 surrounds the periphery of the light guide body 25, the light supplement lamp cannot be opposite to the light emitting surface 20c, the annular skirt 26 can further scatter light supplement light, the problem that the light emitting surface 20c is uneven in brightness is further avoided, and the appearance uniformity of the light emitting surface 20c and the light supplement uniformity of a shooting area are further improved.
The specific shape of the light guide 25 is not limited, and in an exemplary embodiment, referring to fig. 9, a plane perpendicular to the optical axis of the lens assembly 10 is taken as a projection plane, and a projection outer contour of the light guide 25 is circular, that is, the light guide 25 is substantially cylindrical.
In an embodiment, the light supplement lamp may be a top light emitting lamp, and the top surface of the top light emitting lamp emits light supplement light. The top light-emitting lamp is characterized in that light supplementing light rays are emitted from the top surface of the top light-emitting lamp, the top surface of the top light-emitting lamp is opposite to the bottom surface of the top light-emitting lamp, and the electric connection end of the top light-emitting lamp is located on the bottom surface of the top light-emitting lamp. The top surface of the top light is directed toward the bottom surface of the annular skirt 26.
In one embodiment, referring to fig. 9, an annular skirt 26 surrounds the bottom of the light guide 25. Thus, the distance between the bottom surface of the annular skirt 26 and the light emitting surface 20c is larger, so as to further improve the appearance uniformity of the light emitting surface 20c and the uniformity of light supplement to the image pickup area.
In one embodiment, the minimum distance between the lens closest to the cover 30 and the cover 30 is between 0.05mm and 0.4 mm. For example, the minimum distance between the lens closest to the cover plate 30 and the cover plate 30 is 0.05mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, or 0.4mm, and so on. Thus, the minimum distance between the lens closest to the cover plate 30 and the cover plate 30 is reasonable, and the foreign matters between the lens closest to the cover plate 30 and the cover plate 30 can be kept away from the focus of the object side of the lens assembly 10, so that the tolerance of the lens assembly 10 to the foreign matters such as white dots and broken filaments is improved, and the adverse effect caused by the foreign matters is reduced.
In an embodiment, referring to fig. 4, a plane perpendicular to the optical axis of the lens assembly 10 is used as a projection plane, the projection shape of the cover plate 30 is circular, and the diameter of the cover plate 30 is between 6mm and 15 mm. For example, the diameter of the cover plate 30 is 6mm, 7mm, 9mm, 10mm, 11mm, 12mm, 13.5mm, or 15mm, and so on. Thus, the cover 30 is suitable in size, which can ensure that the cover 30 can cover the end of the lens barrel 11 close to the object side, and avoid the cover 30 from being oversized.
In an embodiment, referring to fig. 10, the cover plate 30 has a visible area 31 and a light-shielding area 32 surrounding the visible area 31, and the light transmittance of the visible area 31 is greater than that of the light-shielding area 32; the projection of the lens is located in the projection of the visible area 31 by taking a plane perpendicular to the optical axis of the lens assembly 10 as a projection plane.
On the one hand, imaging light passes through the visible region 31 and enters the lens, and the light transmittance of the visible region 31 is large, so that the influence of the visible region 31 on the imaging light is reduced, most of imaging light can enter the lens assembly 10 through the visible region 31, and the imaging quality is guaranteed. On the other hand, when the user views the cover plate 30 from the object side of the lens assembly 10, the user can be prevented from clearly seeing the structure behind the light-shielding region 32 due to the small light transmittance of the light-shielding region 32. On the other hand, when the user sees the cover plate 30, the appearance of the cover plate 30 is in the shape of a record having a circular area, and the aesthetic sense is good, thereby improving the aesthetic sense of the camera device.
It should be noted that, since the imaging light needs to pass through the cover plate 30 and enter the lens assembly 10, the cover plate 30 has a certain light transmittance. The material of the cover plate 30 is not limited, for example, the cover plate 30 includes, but is not limited to, glass, plastic, silicon, and the like.
The way of the light transmittance of the visible area 31 being greater than the light transmittance of the light-shielding area 32 is not limited, and for example, in an embodiment, the visible area 31 and the light-shielding area 32 are made of different materials, for example, the visible area 31 is made of glass with a relatively high light transmittance, and the light-shielding area 32 is made of plastic with a relatively low light transmittance. In another embodiment, the visible region 31 and the light shielding region 32 are made of plastics with different transmittances, for example, the cover plate 30 can be formed by a two-color injection molding process. In another embodiment, the visible area 31 and the light-shielding area 32 are integrally formed, so that the integrity is good, for example, the visible area 31 and the light-shielding area 32 are made of glass material, the glass material has high strength and is scratch-resistant, a light-blocking structure is disposed on the top surface or the bottom surface of the light-shielding area 32 to reduce the light transmittance of the light-shielding area 32, for example, the light-blocking structure is dark ink, and the dark color includes but is not limited to black or gray, and the like.
In one embodiment, referring to fig. 5 and 9, the bottom surface of the light shielding region 32 abuts against the carrying surface 20 b. In this way, the user can be prevented from clearly seeing the corresponding structure of the bearing surface 20 b.
In an embodiment, referring to fig. 5 and 9, the light guide assembly 20 is fixedly connected to the lens barrel 11, and the cover plate 30 is fixedly connected to the light guide assembly 20. Light guide assembly 20 and lens cone 11 fixed connection, apron 30 and light guide assembly 20 fixed connection, consequently, the camera device constitutes a whole jointly, has not only promoted the intensity reliability of camera device, has improved and has fallen the reliability, avoids mobile terminal to fall and causes lens assembly 10, apron 30, light guide assembly 20 to shift and/or misplace, still is convenient for the camera device to assemble to mobile terminal on.
In order to prevent foreign matters from falling between the cover plate 30 and the lens and affecting the shooting of the camera device, in an embodiment, referring to fig. 5 and 9, the cover plate 30 is hermetically bonded to the bearing surface 20b, the outer peripheral side of the lens barrel 11 extends to face the bottom side of the light guide assembly 20 to form an annular flange 111, and the annular flange 111 is hermetically bonded to the bottom surface of the light guide assembly 20. The cover plate 30, the light guide assembly 20 and the annular flange 111 together enclose a closed space 100a, and one end of the lens barrel 11 close to the object side is located in the closed space 100 a. Thus, the lens is located in the enclosed space 100a, which can prevent the lens from being contaminated by foreign matters, and can also prevent the foreign matters from adhering to the bottom surface of the cover plate 30 and affecting the shooting of the camera device. Because the cleanliness requirement of the production environment of the camera device production process is higher, generally, the camera device is a dust-free environment, when the camera device is produced, the cover plate 30, the light guide assembly 20 and the annular flange 111 jointly enclose to form a closed space 100a, and the lens is located in the closed space 100a, foreign matters can be prevented from falling between the cover plate and the lens in the production process, so that the quality of the camera device is improved. In addition, it is possible to prevent the lens module 10, the cover plate 30, and the light guide module 20 from being forcibly disassembled during after-sales maintenance to damage the closed space 100a formed by the three, and thus, it is possible to prevent foreign substances from entering between the lens module 10 and the cover plate 30 during maintenance.
In one embodiment, referring to fig. 5 and 9, the light-shielding region 32 is hermetically bonded to the carrying surface 20 b. The light transmittance of the light-shielding region 32 is low, so that the user is prevented from viewing the glue between the bottom surface of the light-shielding region 32 and the carrying surface 20 b.
The sealing and bonding manner is not limited, and in an exemplary embodiment, the sealing and bonding is achieved by dispensing, double-sided tape or foam adhesive.
In one embodiment, referring to fig. 5, a portion of the top surface of the light emitting element 21 surrounding the light emitting opening 20a is recessed toward the bottom side to form a carrying surface 20b, the annular flange 111 is located at the bottom side of the light emitting element 21, and the bottom surface of the light emitting element 21 is hermetically bonded to the top surface of the annular flange 111. By such design, the cover plate 30, the light emitting member 21 and the annular flange 111 together enclose a closed space 100 a.
In another embodiment, referring to fig. 9, the supporting surface 20b is formed on the top surface of the supporting pillar 24, in the height direction of the light guide assembly 20, the bottom surface of the supporting pillar 24 is lower than the bottom surface of the light guide body 25, the annular flange 111 is located at the bottom side of the supporting pillar 24, and the bottom surface of the supporting pillar 24 is hermetically bonded to the top surface of the annular flange 111. By such design, the cover plate 30, the support column 24 and the annular flange 111 are arranged to form a closed space 100 a.
In one embodiment, referring to fig. 9, the outer periphery of the supporting column 24 extends toward the bottom side of the light guide 25 to form an annular boss 241, and the bottom surface of the light guide 25 is hermetically bonded to the top surface of the annular boss 241. Thus, the connection between the light guide 25 and the support column 24 is more secure.
In order to further avoid the crosstalk phenomenon, in one embodiment, the camera device includes a light blocking layer disposed on the inner peripheral sidewall of the entrance 20 a. The light blocking layer can block the light supplementing light, and the light supplementing light is prevented from being projected to the lens assembly 10 from the inner peripheral side wall of the entrance 20a, so that a flare phenomenon is avoided.
The specific structure of the light blocking layer is not limited, and the light blocking layer includes, but is not limited to, dark ink, such as gray ink or black ink, for example.
In the description above, references to "some embodiments," "an embodiment," "another embodiment," or "a specific embodiment" describe a subset of all possible embodiments, and thus, the appearances of "some embodiments" or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment, and furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments, it being understood that "some embodiments," "an embodiment," "another embodiment," or "a specific embodiment" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.
The above description is only for the embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.

Claims (18)

1. A camera device, comprising:
the lens assembly comprises a lens barrel and at least one lens arranged in the lens barrel;
the lens barrel comprises a light guide assembly, a lens barrel and a lens barrel, wherein an injection port is formed in the light guide assembly, a bearing surface surrounding the periphery of the injection port and a light emitting surface surrounding the periphery of the bearing surface are formed at the top of the light guide assembly, the height of the bearing surface is lower than that of the light emitting surface in the height direction of the light guide assembly, and one end, close to the object side, of the lens barrel is positioned in the injection port; and
the cover plate covers the injection port and is abutted to the bearing surface.
2. The camera device of claim 1, wherein the light guide assembly includes a light emitting element having the entrance, a portion of the top surface of the light emitting element surrounding the entrance is recessed toward the bottom side to form the supporting surface, and another portion of the top surface of the light emitting element surrounding the supporting surface is the light emitting surface.
3. The camera device according to claim 2, wherein the light guide assembly includes at least one light incident member disposed on the peripheral side surface of the light emitting member, the light incident member has a light incident surface extending from the peripheral side surface of the light emitting member in a radial direction of the lens assembly, and the light incident surface connects the top surface of the light incident member and the bottom surface of the light incident member.
4. The camera device according to claim 3, wherein the light emitting member includes a light guide pillar formed with the light emitting port and an annular light guide ring surrounding an outer periphery of the light guide pillar, and a top surface of the annular light guide ring is lower than a top surface of the light guide pillar in a height direction of the light guide assembly; the light guide column surrounds part of the top surface of the injection port and is recessed towards the bottom side to form the bearing surface, the other part of the top surface of the light guide column surrounding the bearing surface is the light emitting surface, and the light incident piece is arranged on the peripheral side surface of the annular light guide ring.
5. The camera device of claim 4, wherein the annular light guide ring surrounds the bottom of the light guide pillar; and/or the presence of a gas in the gas,
the part of the peripheral side surface of the annular light guide ring extends outwards along the circumferential direction to form the light incident part, and the end surface of the tail end of the light incident part is the light incident surface; and/or the presence of a gas in the gas,
the peripheral side surface of the light inlet part is a convex cambered surface, and the peripheral side surface of the light inlet part and the peripheral side surface of the annular light guide ring are in smooth transition.
6. The camera device according to claim 3, wherein the number of the light incident members is plural, and the plural light incident members are uniformly distributed at intervals in a circumferential direction of the light exit member.
7. The camera device according to claim 3, wherein the light guide assembly includes a scattering structure disposed on a bottom surface of the light emitting element, and the scattering structure is capable of scattering supplementary lighting light; and taking a plane perpendicular to the optical axis of the lens assembly as a projection plane, wherein the projection of the light-emitting surface is positioned in the projection of the scattering structure.
8. The camera device of claim 7, wherein the scattering structure comprises a plurality of serrations spaced circumferentially along the lens assembly, the serrations extending radially of the lens assembly.
9. The camera device according to claim 3, wherein a light blocking groove is formed on a bottom surface of the light emitting member, and is located at the light incident member; and a plane perpendicular to the optical axis of the lens assembly is taken as a projection plane, and the outer edge line of the light blocking groove is positioned on the radial outer side of the outer edge line of the light emergent plane.
10. The camera device according to claim 1, wherein the light guide assembly includes a support pillar having the entrance and a light guide body sleeved outside the support pillar, and a top surface of the support pillar is lower than a top surface of the light guide body in a height direction of the light guide assembly; the bearing surface is formed on the top surface of the supporting column, and the light emergent surface is formed on the top surface of the light guide body.
11. The camera device according to claim 10, wherein the light guide assembly includes an annular skirt surrounding the outer periphery of the light guide body, and a top surface of the annular skirt is lower than a top surface of the light guide body in a height direction of the light guide assembly; and the light supplementing light enters the light guide body from the bottom surface of the annular skirt.
12. The camera device of claim 11, wherein the annular skirt surrounds a bottom portion of the light guide.
13. The camera device according to any one of claims 1 to 12, wherein a minimum distance between a lens closest to the cover plate and the cover plate is between 0.05mm and 0.4 mm; and/or the presence of a gas in the gas,
and a plane perpendicular to the optical axis of the lens assembly is taken as a projection plane, the projection shape of the cover plate is circular, and the diameter of the cover plate is between 6mm and 15 mm.
14. The camera device according to any one of claims 1 to 12, wherein the cover plate has a visible region and a light shielding region surrounding the periphery of the visible region, and a light transmittance of the visible region is greater than a light transmittance of the light shielding region; and taking a plane vertical to the optical axis of the lens assembly as a projection plane, wherein the projection of the lens is positioned in the projection of the visible area.
15. The camera device according to any one of claims 1 to 12, wherein the light guide assembly is fixedly connected to the lens barrel, and the cover plate is fixedly connected to the light guide assembly.
16. The camera device of claim 15, wherein the cover plate is hermetically bonded to the bearing surface, and the outer peripheral side of the lens barrel extends toward the bottom side of the light guide assembly to form an annular flange, and the annular flange is hermetically bonded to the bottom surface of the light guide assembly.
17. The camera device according to any one of claims 1 to 12, wherein the camera device includes a light blocking layer provided on an inner peripheral side wall of the entrance.
18. A mobile terminal, comprising:
the camera device of any one of claims 1 to 17; and
the shell, the shell is formed with logical light mouth, the camera device is located in the shell, the apron set up in logical light mouth department.
CN202110259964.8A 2021-03-10 2021-03-10 Camera device and mobile terminal Active CN112965321B (en)

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