WO2019042293A1 - Lens, camera module and mobile terminal - Google Patents

Abstract

The present invention discloses a lens comprising a lens barrel and a lens group. The lens barrel includes a front portion, a top portion and a reinforcing member. The front portion encloses a receiving space, the lens group is received in the receiving space, and the top portion is disposed at the top end of the main portion, and the strength of the reinforcing member is greater than The strength of the top, the reinforcement is at least partially embedded in the top to enhance the pressure resistance of the lens barrel. The above lens has strong compression resistance. The application also discloses a camera module and a mobile terminal.

Description

Lens, camera module and mobile terminal Technical field

The present application relates to the field of electronic device technologies, and in particular, to a lens, a camera module, and a mobile terminal.

Background technique

At present, the front camera module of the mobile phone mostly adopts the top surface positioning of the lens when the machine is installed, so that the lens barrel of the lens is inevitably subjected to the pressing force. Since the lens barrel has a weak pressure resistance, it is easy to cause distortion of the lens due to deformation of the lens barrel, resulting in blurring of the captured image.

Summary of the invention

The application provides a lens, a camera module and a mobile terminal with strong anti-stress capability.

The embodiment of the present application adopts the following technical solutions:

In one aspect, a lens is provided, including a lens barrel and a lens group, the lens barrel includes a front portion, a top portion, and a reinforcing member, the front portion enclosing a receiving space, the lens group being received in the receiving space, the top portion Provided at the top end of the main portion, the strength of the reinforcing member is greater than the strength of the top portion, and the reinforcing member is at least partially embedded in the top portion to enhance the pressure resistance of the lens barrel.

In another aspect, a camera module is provided, including a circuit board, a lens holder and the lens, the lens holder is fixed on the circuit board, and the lens is disposed inside the lens holder.

In still another aspect, a mobile terminal is provided, including a cover and the camera module, the lens abutting the cover.

DRAWINGS

In order to more clearly illustrate the technical solutions of the present application, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, which are common in the art. For the skilled person, other drawings can be obtained as shown in these drawings without any creative work.

FIG. 1 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.

2 is a schematic diagram of an embodiment of the structure of the mobile terminal shown in FIG. 1 along the line A-A.

3 is a schematic structural view of the camera module of FIG. 2.

4 is a top plan view of the lens barrel of the camera module shown in FIG. 3.

FIG. 5 is a schematic diagram of another embodiment of the structure of the mobile terminal shown in FIG. 1 along the line A-A.

6 is a schematic structural view of a lens barrel of the camera module of FIG. 5.

Fig. 7 is a schematic view showing the structure of an embodiment of the reinforcing member of the lens barrel shown in Fig. 6.

Figure 8 is a schematic view showing the structure of another embodiment of the reinforcing member of the lens barrel shown in Figure 6.

Figure 9 is a schematic view showing the structure of still another embodiment of the reinforcing member of the lens barrel shown in Figure 6.

FIG. 10 is a schematic structural view of another embodiment of the camera module of FIG. 5. FIG.

Detailed ways

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

In addition, the description of the following embodiments is provided with reference to the accompanying drawings. Directional terms mentioned in the present application, for example, "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., only The direction of the additional drawings is to be understood, and therefore, the directional terminology is used to describe and understand the present invention in a better and clearer manner, and does not indicate or imply that the device or component referred to has a specific orientation and a specific orientation. Construction and operation are therefore not to be construed as limiting the application.

In the description of the present application, it should be noted that the terms "installation", "connected", "connected", "disposed on" should be understood broadly, unless otherwise clearly defined and limited, for example, The fixed connection may also be detachably connected or integrally connected; it may be a mechanical connection; it may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements. The specific meanings of the above terms in the present application can be understood in the specific circumstances for those skilled in the art.

Further, in the description of the present application, the meaning of "a plurality" is two or more unless otherwise stated. If the term "process" appears in this specification, it means not only an independent process, but also when it is not clearly distinguishable from other processes, it is included in the term as long as the intended function of the process can be realized. In addition, the numerical range represented by "-" in this specification is a range in which the numerical value described before and after "-" is included as a minimum value and a maximum value, respectively. In the drawings, elements that are similar or identical in structure are denoted by the same reference numerals.

Referring to FIG. 1 , an embodiment of the present application provides a mobile terminal 100. The mobile terminal 100 according to the embodiment of the present application may be any device having communication and storage functions, such as a tablet computer, a mobile phone, an e-reader, a remote controller, a personal computer (PC), a notebook computer, an in-vehicle device, and a network. A smart device with network capabilities such as TVs and wearable devices.

Referring to FIG. 1 and FIG. 2 , the mobile terminal 100 includes a cover 200 and a camera module 300 . The camera module 300 includes a circuit board 1, a lens holder 2, and a lens 3. The lens holder 2 is fixed to the circuit board 1, and the lens 3 is disposed inside the lens holder 2. The lens 3 abuts against the cover 200. The camera module 300 is a front camera of the mobile terminal 100. Of course, in other embodiments, the camera module 300 can also serve as a rear camera of the mobile terminal 100.

2 and 3, the lens 3 includes a lens barrel 31 and a lens group 32. The lens barrel 31 includes a front portion 311, a top portion 312, and a reinforcing member 313. The main part 311 surrounds the accommodating space 3110. The lens group 32 is housed in the accommodating space 3110. The front portion 311 has a first opening, and the bottom end 3112 is provided with a second opening. The first opening and the second opening respectively communicate with opposite sides of the receiving space 3110. The top portion 312 is provided at the top end 3111 of the main portion 311. The lens set 32 can be placed against the top 312 to achieve positioning and save space. The top portion 312 covers a portion of the first opening. The top 312 is for resisting the cover 200. The strength of the stiffener 313 is greater than the strength of the top 312. The stiffener 313 is at least partially embedded in the top portion 312 to enhance the pressure resistance of the lens barrel 31.

In the present embodiment, since the strength of the reinforcing member 313 is greater than the strength of the top portion 312, the reinforcing member 313 is at least partially embedded in the top portion 312, so that the reinforcing member 313 can increase the overall strength of the top portion 312 of the lens barrel 31, thereby enhancing the lens barrel 31. The pressure resistance of the lens 3 is strong, and the lens 3 can reduce the risk of deformation of the lens barrel 31 and avoid blurring of the captured image due to deformation of the lens. Meanwhile, since the reinforcing member 313 is at least partially embedded in the top portion 312, the arrangement of the reinforcing member 313 does not affect the outer shape of the lens barrel 31, so that the lens 3 structure can be reduced without simultaneously designing the lens group 32 structure. The improvement cost and the production cost can ensure a high-precision, high-accuracy mutual cooperation between the lens barrel 31 and the lens group 32.

Optionally, referring to FIG. 2, a foam 400 is disposed between the lens 3 and the cover 200. The foam 400 has elasticity. The foam 400 is pressed between the lens 3 and the cover 200. The foam 400 is capable of sealing and cushioning. Since the pressure resistance of the lens 3 is strong, when the lens 3 squeezes the foam 400, the lens 3 itself hardly deforms, thereby avoiding affecting the shooting quality of the camera module 300. The thickness of the foam 400 is slightly larger than the distance between the lens 3 and the cover 200. In other embodiments, other elastic materials such as silica gel or the like may be disposed between the lens 3 and the cover 200. In other words, the mobile terminal 100 further includes an elastic material (the position of the elastic material in FIG. 2 can be referred to as reference numeral 400), and the elastic material is pressed between the lens 3 and the cover 200. Elastomeric materials include, but are not limited to, foam, silica gel.

Optionally, referring to FIG. 2 and FIG. 3, the lens group 32 has a central axis 320, and the lens group 32 includes a plurality of lenses arranged in sequence along the central axis 320. A spacer (not shown) is disposed between adjacent lenses. The spacer keeps the optical spacing of the lens and ensures that the optical path is within the same aperture of the spacer. Of course, the spacer can also avoid direct contact between the two adjacent lenses to cause wear. The spacer can be made of a Mylar sheet (also known as a PET polyester film). A pressure ring is also provided at a position away from the top portion 312 of the lens group 32 for fixing the position of the lens group 32.

Optionally, referring to FIG. 3, the lens holder 2 is substantially cylindrical. A first thread 22 is provided on the inner peripheral side wall 21 of the mirror holder 2. A second thread 315 is provided on the outer peripheral side wall 314 of the lens barrel 31 of the lens 3. The first thread 22 is threaded with the second thread 315 to achieve positioning. When assembled, the lens 3 can first move the lens holder 2 to a suitable position, so that the camera module 300 has a higher shooting accuracy, and then fill the glue between the first thread 22 and the second thread 315 to make the first The thread 22 and the second thread 315 are fixed to each other, and the lens 3 is fixed to the mirror base 2.

Optionally, referring to FIG. 3, the lens holder 2 is bonded (for example, dispensed) on the circuit board 1. A retaining ring 23 is further disposed on the inner peripheral side wall 21 of the lens holder 2. The limit ring 23 is located between the lens 3 and the circuit board 1. An accommodation space 11 is formed between the limiting ring 23 and the circuit board 1. The camera module 300 further includes a sensor chip 4 and a filter 5 housed in the accommodating space 11. The sensor chip 4 is used to convert an optical signal into an image signal. The sensor chip 4 is fixed (welded or bonded) on the circuit board 1 and facing the lens group 32 to better achieve image acquisition. The limit ring 23 can be located between the lens 3 and the sensor chip 4. Other electronic components 6 housed in the accommodating space 11 may be disposed on the circuit board 1. The filter 5 is bonded (for example, dispensed) on the stop ring 23. The filter 5 is used to filter infrared light to ensure an imaging effect. The filter 5 can be made of blue glass.

When assembled, the sensor chip 4 and the electronic component 6 are first attached to the circuit board 1 to form a first component. The filter 5 is then attached to the limit ring 23 of the lens holder 2, and the lens 3 is fixed to the lens holder 2 to form a second component. Next, the lens holder 2 is fixed to the circuit board 1 to assemble the second component and the first component to form the camera module 300.

Optionally, referring to FIG. 1 , the mobile terminal 100 further includes a touch screen component. The touch screen assembly can be secured to the cover 200. The cover 200 has a window area 201 and a bezel area 202. The display area of the touch screen assembly faces the window area 201. The camera module 300 faces the bezel area 202.

Optionally, referring to FIG. 1 and FIG. 2, the mobile terminal 100 further includes a housing. The housing includes a back cover 500. The back cover 500 carries the camera module 300. The rear cover 500 presses the camera module 300 against the cover 200. In one embodiment, the housing further includes a front housing 600. The front case 600 and the cover 200 are bonded and fixed, for example, by double-sided tape. The front case 600 abuts the rear cover 500. The cover 200, the front case 600 and the rear cover 500 together define a space for accommodating the camera module 300. In one embodiment, the housing further includes a bezel. The mobile terminal 100 further includes a main board, a battery, a volume key module, a power key module, a card tray, and the like.

In one embodiment, the top 312 is a polycarbonate (PC) material. The stiffener 313 may utilize a fiberglass or a glass fiber doped polycarbonate material that is stronger than the top 312. In another embodiment, the top 312 is made of a glass fiber doped polycarbonate material and the stiffener 313 is made of other materials that are stronger than the top 312.

In one embodiment, the stiffener 313 is constructed of a metallic material. For example, cast iron, steel, stainless steel, titanium alloy, and the like. At this time, most of the plastic material can be used as the material of the top 312.

As an alternative embodiment, referring to FIG. 2 and FIG. 3 together, the reinforcing member 313 is integrally formed in the lens barrel 31 by means of insert molding. Buried molding refers to a process in which a buried member is placed in a mold for molding. Since the reinforcing member 313 is integrally formed in the lens barrel 31 by means of embedding molding, it is possible to avoid damaging the outer shape of the lens barrel 31, so that the outer shape of the lens barrel 31 has continuity and integrity, thereby avoiding assembly by a fitting hole or the like. The notch reduces the strength of the lens barrel 31.

Alternatively, the front portion 311 is integrally formed with the top portion 312 to simplify the processing of the lens barrel 31 and to enhance the strength of the lens barrel 31. When the lens barrel 31 is produced, the already formed reinforcing member 313 is first placed in a mold, and then the top portion 312 and the main portion 311 are simultaneously formed on the outer circumference of the reinforcing member 313 by mold clamping and injection molding, thereby integrally molding the lens barrel 31.

As an alternative embodiment, please refer to FIG. 2 to FIG. 4 together, the top portion 312 is provided with a through hole 3121 for allowing light to enter the lens group 32. The center of the through hole 3121 is located on the central axis 320 so that external light can accurately enter the lens group 32 to improve the imaging accuracy of the camera module 300. The reinforcing member 313 is disposed around the through hole 3121. When the reinforcing member 313 is disposed around the through hole 3121, the overall strength of the top portion 312 can be uniformly strengthened, so that the top portion 312 is more resistant to pressure when it is pressed against the cover plate 200.

In one embodiment, with reference to Figures 2 through 4, the stiffener 313 is fully embedded in the top 311. The shape of the stiffener 313 varies with the shape of the top portion 312, and is disposed at a center position in the thickness direction of the top portion 312.

In another embodiment, referring to FIG. 5 and FIG. 6, the reinforcement member 313 includes a first portion 3131 and a second portion 3132 that connects the first portion 3131. The first portion 3131 is embedded in the top portion 312 and the second portion 3132 is embedded in the front portion 311. The main portion of the first portion 3131 varies with the shape of the top portion 312, and is disposed at a center position in the thickness direction of the top portion 312. The main portion of the second portion 3132 varies depending on the shape of the main portion 311, and is disposed at a position at the center in the thickness direction of the main portion 311. The stiffener 313 also includes a third portion that is coupled between the first portion 3131 and the second portion 3132.

In one embodiment, in conjunction with FIGS. 5-7, the first portion 3131 is annularly shaped and the second portion 3132 is cylindrical. The direction in which the central axis 320 of the lens group 32 is defined is the first direction, and the vertical direction of the first direction is the second direction. The size of the first portion 3131 in the first direction is smaller than the size in the second direction. The second portion 3132 has a dimension in the first direction that is greater than a dimension in the second direction.

The first portion 3131 is a continuous plate-like structure. The first portion 3131 central hollow portion corresponds to the through hole 3121. The second portion 3132 is a continuous cylindrical structure. In other embodiments, the first portion 3131 is provided with a plurality of first hollow regions 3133 spaced apart from each other, and the top portion 312 is filled with a plurality of first hollow regions 3133. At this time, the fixed relationship between the top portion 312 and the first portion 3131 is more reliable, and the strength of the lens barrel 31 is higher. The second portion 3132 is provided with a plurality of second hollow regions 3134 spaced apart from each other, and the main portion 311 is filled with a plurality of second hollow regions 3134. At this time, the fixed relationship between the front portion 311 and the second portion 3132 is more reliable, and the strength of the lens barrel 31 is higher.

It can be understood that the structure of the reinforcing member 313 fully embedded in the top portion 311 in the above embodiment can be designed with reference to the structure of the first portion 3131 in this embodiment. For example, the reinforcing member 313 has an annular plate shape. Wherein, the reinforcing member 313 can also be provided with a plurality of hollowed out areas spaced apart from each other.

In another embodiment, referring to FIG. 5, FIG. 6, and FIG. 9, the first portion 3131 includes a plurality of reinforcing blocks 3135, and the plurality of reinforcing blocks 3135 are spaced apart from each other. The plurality of reinforcing blocks 3135 may be evenly arranged around the through holes 3121. Compared with the above embodiment, the reinforcing member 313 of the embodiment has less material, lighter weight and lower cost, and is beneficial to the thinning of the mobile terminal 100 and the camera module 300. At the same time, the gap between the adjacent two reinforcing blocks 3135 is filled by the top 312. In other words, the top 321 fills the gap between the adjacent two reinforcing blocks 3135. At this time, the manner in which the top portion 312 and the reinforcing block 3135 are alternately arranged is advantageous for enhancing the strength of the lens barrel 31.

The first portion 3131 further includes a plurality of connecting blocks 3136, and the plurality of connecting blocks 3136 are connected in one-to-one correspondence between the adjacent two reinforcing blocks 3135. The arrangement of the plurality of connection blocks 3136 is such that the overall strength of the first portion 3131 is higher, thereby contributing to an increase in the strength of the reinforcing member 313, so that the strength of the lens barrel 31 is higher. The width of the single connecting block 3136 is smaller than the width of the single reinforcing block 3135, and the single connecting block 3136 and the two reinforcing blocks 3135 connected by the connecting block 3136 together form a recessed area, and the top portion 312 fills the recessed area.

The second portion 3132 includes a plurality of fixing claws 3137, and the plurality of fixing claws 3137 are connected to the plurality of reinforcing blocks 3135 in a one-to-one correspondence. At this time, the material of the reinforcing member 313 can be further reduced, so that the overall quality of the reinforcing member 313 is lighter and the cost is lower, which is advantageous for the thinning of the mobile terminal 100 and the camera module 300.

It can be understood that the structure of the reinforcing member 313 fully embedded in the top portion 311 in the above embodiment can be designed with reference to the structure of the first portion 3131 in this embodiment. For example, the reinforcing member 313 includes a plurality of reinforcing plates (reference reinforcing blocks 3135) that are spaced apart from each other.

In one embodiment, referring in conjunction with FIG. 10, the second portion 3132 includes an upper portion 3138 and a lower portion 3139. Upper portion 3138 is coupled between first portion 3131 and lower portion 3139. An angle is formed between the upper portion 3138 and the lower portion 3139 to make the strength of the reinforcing member 313 higher. The shapes of the upper portion 3138 and the lower portion 3139 follow the shape change of the main portion 311.

The embodiments of the present application have been described in detail above. The principles and implementations of the present application are described in the specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present application. A person skilled in the art will have a change in the specific embodiments and the scope of the application according to the idea of the present application. In summary, the content of the present specification should not be construed as limiting the present application.

Claims (20)

A lens comprising a lens barrel and a lens group, the lens barrel including a front portion, a top portion and a reinforcing member, wherein the front portion encloses a receiving space, and the lens group is received in the receiving space, the top portion Provided at the top end of the main portion, the strength of the reinforcing member is greater than the strength of the top portion, and the reinforcing member is at least partially embedded in the top portion to enhance the pressure resistance of the lens barrel. The lens according to claim 1, wherein said reinforcing member is made of a metal material. The lens according to claim 1, wherein said top portion is made of a polycarbonate material, and said reinforcing member is made of a glass fiber material or a glass fiber-doped polycarbonate material. The lens according to claim 1, wherein said reinforcing member is integrally molded in said barrel in a form of embedding. The lens according to any one of claims 1 to 4, wherein the top portion is provided with a through hole for allowing light to enter the lens group, and the reinforcing member is disposed around the through hole . The lens according to claim 5, wherein said reinforcing member comprises a first portion and a second portion connecting said first portion, said first portion being embedded in said top portion, said second portion being embedded in said main portion. The lens according to claim 6, wherein said first portion has an annular plate shape and said second portion has a cylindrical shape. The lens according to claim 7, wherein said first portion is provided with a plurality of first hollow regions spaced apart from each other, said top portion filling said plurality of first hollow regions. The lens according to claim 6, wherein said first portion comprises a plurality of reinforcing blocks, said plurality of reinforcing blocks being spaced apart from each other. The lens according to claim 9, wherein said top portion fills a gap between two adjacent said reinforcing blocks. The lens according to claim 9, wherein said first portion further comprises a plurality of connection blocks, said plurality of connection blocks being connected in one-to-one correspondence between adjacent two of said reinforcement blocks. The lens according to any one of claims 9 to 11, wherein the second portion includes a plurality of fixing claws, and the plurality of fixing claws connect the plurality of reinforcing blocks in a one-to-one correspondence. The lens according to claim 6, wherein said second portion includes an upper portion and a lower portion, said upper portion being coupled between said first portion and said lower portion, and said upper portion and said lower portion form a clip angle. The lens according to claim 5, wherein said reinforcing member is completely embedded in said top portion, and said reinforcing member has an annular plate shape. A camera module, comprising: a circuit board, a lens holder, and the lens according to any one of claims 1 to 14, wherein the lens holder is fixed on the circuit board, and the lens is disposed on the Inside the mirror mount. The camera module according to claim 15, wherein a first thread is disposed on an inner circumferential side wall of the lens holder, and a second thread is disposed on an outer circumferential side wall of the lens barrel of the lens. The first thread is screwed to the second thread, and a glue is filled between the first thread and the second thread. The camera module according to claim 15 or 16, wherein a limiting ring is disposed on an inner peripheral side wall of the lens holder, and the limiting ring is located between the lens and the circuit board. The camera module further includes a filter, the filter being bonded to the limiting ring. A mobile terminal, comprising: a cover plate and the camera module according to any one of claims 15 to 17, wherein the lens abuts the cover plate. The mobile terminal of claim 18, wherein the mobile terminal further comprises an elastic material that is pressed between the lens and the cover. The mobile terminal according to claim 18 or 19, wherein the mobile terminal further comprises a back cover, and the back cover is used for pressing the camera module against the cover.

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