CN113747027A

CN113747027A - Camera assembly and electronic equipment

Info

Publication number: CN113747027A
Application number: CN202111081671.1A
Authority: CN
Inventors: 董富伟
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2021-12-03

Abstract

The application provides a camera subassembly and electronic equipment, this camera subassembly includes: the first lens module and the photosensitive module; the first lens module is arranged on one side of the photosensitive module and is also provided with a zooming unit and a first lens unit; the zooming unit is electrically connected with the photosensitive module and is configured to be used for realizing focusing of the camera assembly; the first lens unit and the zoom unit are disposed opposite to each other in an optical axis direction of the camera assembly, and the first lens unit is configured to have a free-form surface lens. Through the mode, the height of the camera assembly can be reduced.

Description

Camera assembly and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to a camera assembly and electronic equipment.

Background

With the continuous development of electronic devices, the electronic devices have become indispensable entertainment tools and social tools in people's daily life, and people's demand for the electronic devices is also higher and higher. Taking a mobile phone as an example, a conventional mobile phone generally has a zoom lens for shooting, so as to improve the shooting effect of the mobile phone. However, the height of the current zoom camera module is large, and the thickness of the mobile phone is increased after the zoom camera module is mounted on the mobile phone.

Disclosure of Invention

An aspect of an embodiment of the present application provides a camera assembly, which includes: the first lens module and the photosensitive module; the first lens module is arranged on one side of the photosensitive module and is also provided with a zooming unit and a first lens unit; the zooming unit is electrically connected with the photosensitive module and is configured to be used for realizing focusing of the camera assembly; the first lens unit and the zoom unit are disposed opposite to each other in an optical axis direction of the camera assembly, and the first lens unit is configured to have a free-form surface lens.

Another aspect of the embodiments of the present application provides an electronic device, including: the camera assembly comprises a display screen, a mounting shell and the camera assembly; the display screen is arranged on the mounting shell and forms an accommodating space together with the mounting shell in an enclosing manner; the camera assembly is arranged in the accommodating space.

The camera assembly that this application embodiment provided through set up the unit of zooming on first lens module, can be used for realizing the focusing function of camera assembly. Simultaneously, through set up first lens unit on first lens module, and first lens unit has the free-form surface lens, can utilize the characteristics that the lens summit curvature radius of free-form surface lens is more flat, reduces camera subassembly's mechanical back focus, reduces camera subassembly height in the optical axis direction.

Drawings

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

Fig. 1 is a schematic structural diagram of an electronic device 10 provided in an embodiment of the present application;

FIG. 2 is an exploded view of the electronic device 10 of FIG. 1;

FIG. 3 is a schematic diagram of the structure of the camera head assembly 300 of FIG. 2;

FIG. 4 is an exploded view of the camera head assembly 300 of FIG. 3;

FIG. 5 is a cross-sectional view of the camera head assembly 300 of FIG. 3 along V-V;

FIG. 6 is a schematic structural diagram of the lens module 310 in FIG. 5;

FIG. 7 is a schematic structural diagram of the first lens module 311 shown in FIG. 5;

fig. 8 is a schematic cross-sectional structure of the focusing unit 3112 in fig. 5;

FIG. 9 is a schematic structural diagram of the first lens module 311 in FIG. 7 from another viewing angle;

FIG. 10 is an enlarged view of a portion of FIG. 7 at G;

FIG. 11 is a schematic cross-sectional view of the camera head assembly 300 of FIG. 3 at another position along V-V;

FIG. 12 is a schematic structural diagram of the filter module 320 in FIG. 11;

FIG. 13 is an enlarged partial schematic view at Z of FIG. 11;

FIG. 14 is a cross-sectional view of the camera head assembly 300 of FIG. 3 taken along line V-V in another embodiment;

FIG. 15 is a schematic structural diagram of the photosensitive module 330 in FIG. 12;

fig. 16 is a graph of chromatic aberration of a camera assembly 300 provided by an embodiment of the present application;

FIG. 17 is a schematic flow chart illustrating a method of assembling a camera assembly provided by an embodiment of the present application;

FIG. 18 is a schematic flow chart of providing a first lens module of FIG. 17;

FIG. 19 is a flow chart illustrating a filter module provided in FIG. 17.

Detailed Description

As used herein, an "electronic device" (or simply "terminal") includes, but is not limited to, an apparatus that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A cellular phone is an electronic device equipped with a cellular communication module.

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive work are within the scope of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of an electronic device 10 according to an embodiment of the present disclosure, fig. 2 is a schematic exploded structural diagram of the electronic device 10 in fig. 1, fig. 3 is a schematic structural diagram of a camera head assembly 300 in fig. 2, and fig. 4 is a schematic exploded structural diagram of the camera head assembly 300 in fig. 3.

The electronic device 10 provided in the embodiment of the present application may be a device having a shooting function, such as a mobile phone, a tablet computer, a notebook computer, and a smart watch, and the following description will be given by taking the electronic device 10 as a mobile phone. As shown in fig. 1 to 2, the electronic device 10 may include: display screen 100, mounting case 200, and camera assembly 300. The display screen 100 is connected with the mounting case 200, and the display screen and the mounting case are jointly surrounded to form an accommodating space 101. The camera assembly 300 is disposed in the accommodating space 101, and the camera assembly 300 can be used for receiving external light to form an image and displaying the image on the display screen 100. The camera assembly 300 is used for realizing front-view imaging of the electronic device 10, and may also be used for realizing rear-view imaging of the electronic device 10. The front camera can be used for receiving light by the camera assembly 300 at the side close to the display screen 100 for imaging, and the rear camera can be used for receiving light by the camera assembly 300 at the side away from the display screen 100 for imaging.

The display screen 100 may be used to provide an image display function for the electronic device 10, and when the user uses a shooting function of the electronic device 10, the display screen 100 may present an imaging picture of the camera assembly 300 for the user to observe and operate. The display screen 100 may be covered on one side of the mounting case 200, and the display screen 100 and the mounting case may be adhered and fixed by an adhesive. The display screen 100 may include a transparent cover plate, a touch panel, and a display panel, which are sequentially stacked. The surface of the transparent cover plate can have the characteristics of flatness and smoothness, so that a user can conveniently perform touch operation such as clicking, sliding and pressing. The transparent cover plate may be made of a rigid material such as glass, or may be made of a flexible material such as Polyimide (PI) or Colorless Polyimide (CPI). The touch panel is disposed between the transparent cover and the display panel, and is configured to respond to a touch operation of a user, convert the touch operation into an electrical signal, and transmit the electrical signal to the processor of the electronic device 10, so that the electronic device 10 can respond to the touch operation of the user. The display panel is mainly used for displaying pictures and can be used as an interactive interface to instruct a user to perform the touch operation on the transparent cover plate. The Display panel may employ an OLED (Organic Light-Emitting Diode) or an LCD (Liquid Crystal Display) to implement the image Display function of the electronic device 10. In this embodiment, the transparent cover plate, the touch panel and the display panel may be attached together by using an optical Adhesive (OCA) or a Pressure Sensitive Adhesive (PSA).

The mounting case 200 may be used to mount various electronic devices required by the electronic device 10, and the mounting case 200 and the display screen 100 may together enclose a receiving space 101. As shown in fig. 2, the mounting case 200 may include: a middle frame 210 and a rear case 220. The display screen 100 may cover one side of the middle frame 210, and the rear casing 220 may cover the other opposite side of the middle frame 210, and the three may together form the receiving space 101. The receiving space 101 may be divided into a first receiving space 1011 and a second receiving space 1012. The first receiving space 1011 may be formed by the display screen 100 and the middle frame 210, and may be used to mount electronic devices such as an optical sensor, so as to achieve functions such as fingerprint unlocking, automatic screen turning off, and brightness self-adjustment. The second receiving space 1012 may be formed by the rear housing 220 and the middle frame 210, and may be used to mount electronic devices such as a microphone, a speaker, a flashlight, a circuit board, and a battery, so as to implement functions such as voice communication, audio playing, and lighting. The camera module 300 may be disposed in the first housing space 1011 for front-view imaging, or may be disposed in the second housing space 1012 for rear-view imaging. Of course, the first receiving space 1011 and the second receiving space 1012 may be provided with the camera assembly 300 at the same time.

When the camera assembly 300 is disposed in the first receiving space 1011, the area of the display screen 100 corresponding to the camera assembly 300 may be provided with the first light-transmitting area 110, so that light reflected by an external object can be irradiated to the camera assembly 300 through the first light-transmitting area 110, so that the camera assembly 300 can image. Correspondingly, when the camera assembly 300 is disposed in the second receiving space 1012, the area of the rear shell 220 corresponding to the camera assembly 300 may also be provided with the second light-transmitting area 221, so that light reflected by an external object can be irradiated to the camera assembly 300 through the second light-transmitting area 221, so as to facilitate the imaging of the camera assembly 300. The first light-transmitting area 110 and the second light-transmitting area 221 may be light-transmitting holes, that is, corresponding holes are formed in the display screen 100 and the rear case 220 for transmitting light. Of course, the display screen 100 and the rear case 220 may also be partially transparent or translucent to form the first light-transmitting area 110 and the second light-transmitting area 221, and only the external light can be irradiated to the camera module 300 through the first light-transmitting area 110 and the second light-transmitting area 221.

The material of the middle frame 210 and the rear case 220 may be glass, metal, hard plastic, etc., so that the middle frame 210 and the rear case 220 have certain structural strength. The middle frame 210 and the rear housing 220 may be made of the same material, and because the middle frame 210 and the rear housing 220 are generally directly exposed to the external environment, the middle frame 210 and the rear housing 220 may also have certain wear-resistant, corrosion-resistant, scratch-resistant, and other properties, or a layer of wear-resistant, corrosion-resistant, scratch-resistant functional material is coated on the outer surfaces of the middle frame 210 and the rear housing 220 (i.e., the outer surface of the electronic device 10). In addition, in some embodiments, the middle frame 210 and the rear case 220 may further have a corresponding brand identifier (LOGO) disposed thereon to beautify the appearance of the electronic device 10 and improve brand recognition. All directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.

The middle frame 210 may be used to mount the electronic components of the electronic apparatus 10 to fix the electronic components within the receiving space 101. As shown in fig. 2, the middle box 210 may include: a middle plate 211 and a bezel 212. The middle plate 211 may be used to carry the camera assembly 300 to fix the camera assembly 300 in the receiving space 101. For example, the middle plate 211 may be provided with a screw hole or an adhesive, so that the camera assembly 300 may be fixed on the middle plate 211 by screwing or bonding. Of course, the middle plate 211 may also be used to carry other electronic devices required by the electronic apparatus 10. The frame 212 may be formed by extending the side wall of the middle plate 211 in the thickness direction of the middle plate 211, so that both sides of the middle frame 210 disposed opposite to each other may form a corresponding open structure. The display screen 100 may cover an open structure at one side of the middle frame 210 to form a first receiving space 1011 with the middle frame 210. The rear case 220 may cover the open structure at the other opposite side of the middle frame 210 to form a second receiving space 1012 together with the middle frame 210. Meanwhile, the display screen 100 and the rear case 220 may be fixedly connected with the middle frame 210 by using an adhesive and/or a snap to improve structural strength of the three.

Further, the middle plate 211 and the frame 212 may be an integral structure, and they may be integrally formed by injection molding, punch forming, heat absorption forming, or the like. Of course, the middle plate 211 and the frame 212 may also be two independent structural members, and the two may be connected by one of assembling manners such as clamping, bonding, welding, and the like, and a combination thereof. In some embodiments, the middle frame 210 may be provided with only the bezel 212, and the display screen 100 may be provided on one side of the bezel 212, and the rear case 220 may be provided on the other opposite side of the bezel 212. Thus, the three components can still form a receiving space 101 together to mount the camera module 300 and other electronic components of the electronic device 10. In addition, in some embodiments, the rear shell 220 may be further designed with films such as texture, gradient color, photochromic, electrochromic, and the like, so as to enhance the appearance of the electronic device 10.

The camera assembly 300 may be disposed in the accommodating space 101, and the camera assembly 300 may receive external light for imaging. As shown in fig. 3 to 4, the camera assembly 300 may include: lens module 310, filter module 320, photosensitive module 330 and protective cover 340. The lens module 310, the filter module 320 and the photosensitive module 330 can be sequentially connected in the optical axis direction Y of the camera module 300, and the light rays emitted into the accommodating space 101 can sequentially pass through the lens module 310 and the filter module 320 to irradiate the photosensitive module 330 for imaging, so that the shooting function of the electronic device 10 is realized. The lens module 310 may also be used to implement a focusing function of the camera assembly 300 after being powered on, so as to improve a photographing effect. The protective cover 340 may be disposed on the lens module 310, and may be used to protect the lens module 310. In this embodiment, the lens module 310 and the photosensitive module 330 can have the advantage of high reliability after being assembled, so as to reduce the probability of electrical connection failure of the lens module 310 and the photosensitive module 330 caused by external impact on the electronic device 10.

Referring to fig. 5 to 10, fig. 5 is a schematic cross-sectional structure of the camera head assembly 300 along v-v in fig. 3, fig. 6 is a schematic structural view of the lens module 310 in fig. 5, fig. 7 is a schematic structural view of the first lens module 311 in fig. 5, fig. 8 is a schematic cross-sectional structure of the focusing unit 3112 in fig. 5, fig. 9 is a schematic structural view of the first lens module 311 in fig. 7 from another view angle, and fig. 10 is a partially enlarged view of G in fig. 7.

The lens module 310 can be used to converge or diverge the light entering the accommodating space 101 to change the propagation path of the incident light, so that the light can irradiate the photosensitive module 330 for imaging after passing through the lens module 310. As shown in fig. 5 to 6, the lens module 310 may include: a first lens module 311 and a second lens module 312. The first lens module 311 may be disposed on a side of the filtering module 320 away from the photosensitive module 330, and the first lens module 311 may further be electrically connected to the photosensitive module 330 to implement a focusing function of the camera assembly 300. The second lens module 312 may be disposed on a side of the first lens module 311 away from the filter module 320, and a side of the second lens module 312 away from the first lens module 311 may be a light incident side of the camera module 300, and light rays incident into the accommodating space 101 may sequentially pass through the second lens module 312, the first lens module 311 and the filter module 320 and irradiate onto the photosensitive module 330 for imaging.

The first lens module 311 may be provided with a first housing 3111, a zoom unit 3112, a first lens unit 3113, a first electric connector 3114, and a conductive wire 3115. As shown in fig. 5 and 7, the first housing 3111 may be disposed between the second lens module 312 and the filter module 320, and connected to the second lens module 312 and the filter module 320, respectively. The zoom unit 3112, the first lens unit 3113, the first electric connector 3114, and the wire 3115 may be disposed on the first housing 3111. The zoom unit 3112 can be electrically connected to the photosensitive module 330 to implement a focusing function of the camera assembly 300. The first lens unit 3113 may be disposed opposite to the zoom unit 3112 in the optical axis direction Y for changing a propagation path of incident light. The first electrical connector 3114 may be electrically connected to the zoom unit 3112 and the filter module 320, respectively, and may be used for electrically communicating the zoom unit 3112 and the photosensitive module 330. The wire 3115 may be connected to the zoom unit 3112 and the first electrical connector 3114, respectively, to enable electrical communication between the zoom unit 3112 and the first electrical connector 3114.

The first housing 3111 may be disposed between the second lens module 312 and the filter module 320, and the first housing 3111 may be used to mount various components of the first lens module 311. As shown in fig. 5, the first housing 3111 may be provided with a mounting groove 31101 and a first light-transmitting hole 31102 communicating with each other in the optical axis direction Y, and the mounting groove 31101 may be used for mounting the zoom unit 3112 and the first light-transmitting hole 31102 may be used for mounting the first lens unit 3113 so that the zoom unit 3112 and the first lens unit 3113 may be oppositely disposed in the optical axis direction Y. The mounting groove 31101 can be disposed on a side of the first housing 3111 away from the filter module 320, and the second lens module 312 can be disposed on the mounting groove 31101, so that the second lens module 312 is disposed opposite to the zoom unit 3112 in the optical axis direction Y.

As shown in fig. 5 to 7, an outer side wall of the first housing 3111 away from the first light-transmitting hole 31102 may be further provided with a stepped structure, so that the first housing 3111 may have a first stepped surface 31111, a second stepped surface 31112 and a third stepped surface 31113 with sequentially decreasing heights in a direction away from the filter module 320. That is, a vertical distance between the first step surface 31111 and the filter module 320 is greater than a vertical distance between the second step surface 31112 and the filter module 320, and a vertical distance between the second step surface 31112 and the filter module 320 is greater than a vertical distance between the third step surface 31113 and the filter module 320. First step surface 31111 may be disposed around mounting groove 31101, first step surface 31111 may be used for carrying second lens module 312, and second step surface 31112 may be used for carrying protective cover 340. Also, first step face 31111, second step face 31112 and third step face 31113 may also be used in common for routing first electrical connector 3114. Thus, not only can the first lens module 311, the second lens module 312 and the protective cover 340 be assembled, but also the contact area between the first housing 3111 and the first electrical connector 3114 can be increased by using the step surface formed by the stepped structure of the first housing 3111, so as to improve the bonding strength between the first housing 3111 and the first electrical connector 3114, thereby improving the reliability of the first electrical connector 3114. It should be noted that the vertical distance is calculated by using the side of the filter module 320 contacting the first housing 3111 as a reference plane.

The zoom unit 3112 may be disposed in the mounting groove 31101, and the zoom unit 3112 may be a liquid lens, which may be deformed to change a curvature after being powered on, so that a propagation path of incident light may be changed, thereby implementing a focusing function of the camera assembly 300. As shown in fig. 5 and 7 to 8, the zoom unit 3112 may be provided with a housing 31121 and an elastic transparent body 31122. The housing 31121 may be provided with a top plate a, a side plate B, and a bottom plate C. The top plate A is connected with the side plate B, and the bottom plate C and the top plate A are oppositely arranged to form an accommodating space D. Alternatively, the top plate a and the side plate B may be an integral structure made of the same material, such as glass or silicon. The side plate B is used for being connected with the first housing 3111, the top plate a may be covered with a layer of piezoelectric ceramic, and the piezoelectric ceramic may further be provided with an electrode connected with the wire 3115, so that the piezoelectric ceramic may be deformed under the driving of voltage. The thickness of the top plate a is generally small. In this embodiment, the middle position (labeled E in the figure) of the top plate a may be a circular transparent lens, or a light-transmitting area without piezoelectric ceramics, as a light-entering hole of the zoom unit 3112.

The elastic transparent body 31122 can be disposed in the accommodating space D between the bottom plate C and the top plate a, and two opposite side surfaces of the elastic transparent body 31122 are respectively connected to the bottom plate C and the top plate a. The elastic transparent body 31122 may be made of flexible resin or silica gel, and two opposite side surfaces of the elastic transparent body 31122 are respectively bonded and fixed to the bottom plate C and the top plate a. As described above, when the relative position between the bottom plate C and the top plate a changes (for example, when the piezoelectric ceramic on the top plate a is deformed by a voltage), the opposite side surfaces of the elastic transparent body 31122 are bonded and fixed to the bottom plate C and the top plate a, respectively, so that the elastic transparent body 31122 can change with the deformation of the top plate a. Meanwhile, since the elastic transparent body 31122 can be a transparent lens, when the elastic transparent body 31122 is deformed, the curvature or the shape of the elastic transparent body 31122 changes, so as to change the propagation path of the incident light in the zoom unit 3112, thereby achieving the purpose of focusing of the camera assembly 300.

In some embodiments, the zoom unit 3112 may also be disposed in the first light-transmitting hole 31102, that is, the zoom unit 3112 may not only be disposed on the side of the first housing 3111 close to the second lens module 312, but also its arrangement position may be adjusted according to the actual structure and lens combination of the camera head assembly 300. Meanwhile, the number of the zoom units 3112 may also be not limited to one, but may also be a plurality, such as two, three, or four. Further, in some embodiments, the zoom unit 3112 may also change the propagation path of incident light only after being powered on without deformation. For example, the zoom unit 3112 may be a liquid crystal lens, and when the zoom unit 3112 is powered on, the liquid crystal may be deflected to change a propagation path of light, thereby implementing a focusing function of the camera assembly 300.

The first lens unit 3113 may be disposed in the first light-transmitting hole 31102, and the first lens unit 3113 may cooperate with the second lens module 312 and the zoom unit 3112 to change a propagation path of incident light. As shown in fig. 5, the first lens unit 3113 can be fixed in the first light-transmitting hole 31102 by bonding and/or clipping, and the first lens unit 3113 has at least two optical lenses for converging or diverging incident light. Wherein at least one of the at least two optical lenses is a free-form surface lens. For example, the first lens unit 3113 may be provided with four optical lenses, the number of the free-form surface lenses may be one, and the remaining three optical lenses may be spherical lenses or aspherical lenses, and the material may be plastic or glass. Of course, the ratio of the free-form surface lens in the optical lens is not limited to the four-to-one ratio, and the ratio number may also be adjusted according to the lens combination and/or the actual structure of the camera head assembly 300, which is not limited in this embodiment.

Compare in ordinary spherical lens, because the lens summit curvature radius of free-form surface lens is flatter, consequently the free-form surface lens can be set up more closely filtering module 320 to reduce the stack space that free-form surface lens and filtering module 320 occupied on optical axis direction Y, reduce camera assembly 300's mechanical back focus, reduce camera assembly 300 height on optical axis direction Y. Meanwhile, since the free-form surface lens itself has an irregular and free-form surface, the curvature of the free-form surface lens in different directions may not be fixed, so that when incident light of different angles passes through the free-form surface lens, the approximate magnification may be maintained, the aberration may be reduced to the maximum extent, and the shooting effect of the camera assembly 300 may be improved.

A first electrical connector 3114 may be disposed on an outer surface of the first housing 3111, which may be used to electrically connect the zoom unit 3112 and the photosensitive module 330. As shown in fig. 5, 7 and 9, one end of the first electrical connector 3114 can be disposed on one side of the first housing 3111 close to the second lens module 312, that is, on the first step surface 31111, and electrically connected to the zoom unit 3112 in the mounting groove 31101. The other end of the first electrical connector 3114 can be disposed on a side of the first housing 3111 close to the filter module 320, and is electrically connected to the filter module 320. Meanwhile, the first electrical connector 3114 may also be arranged on a stepped structure of the first housing 3111 to increase a contact area of the first electrical connector 3114 and the first housing 3111 by means of the second and third stepped

surfaces

31112 and 31113. Thus, the zooming unit 3112 can be electrically connected to the filter module 320 through the first electrical connector 3114, and further electrically connected to the photosensitive module 330 through the filter module 320, so that the zooming unit 3112 can be deformed after being powered on, and a focusing function of the camera assembly 300 can be realized.

Further, the first electrical connector 3114 may be made of a conductive material such as metal, and the surface of the first electrical connector 3114 has at least a copper plating layer of 8-12 μm, a nickel plating layer of 3-8 μm, a palladium plating layer of more than 0.1 μm, and a gold plating layer of more than 0.1 μm. Meanwhile, the first electric connector 3114 has a resistance of not more than 200 milliohms at maximum between any two points, and the line width of the first electric connector 3114 is at least 0.6 mm. Thus, not only the corrosion resistance and oxidation resistance of the first electrical connector 3114 can be improved, but also the first electrical connector 3114 can be ensured to have sufficient conductivity. In addition, first electrical connector 3114 occupies an area of at least 0.5 x 0.6mm on first stepped surface 31111²To provide sufficient contact for the connection of the first electrical connector 3114 and the wire 3115Area. The first electrical connector 3114 may be formed on the first housing 3111 by a laser direct structuring technique, and the first electrical connector 3114 may be fabricated in the step of fabricating the first lens module 311, and it is not necessary to perform an independent routing layout to fabricate the first electrical connector 3114 after the camera assembly 300 is assembled, so as to simplify an assembly process of the camera assembly 300 and improve assembly convenience of the camera assembly 300. Meanwhile, in this embodiment, the combination manner of the first housing 3111 and the first electrical connector 3114 can also improve the shock resistance of the first electrical connector 3114, reduce the probability that the first electrical connector 3114 is loosened or shifted due to the impact of an external force on the camera assembly 300, and improve the reliability of the electrical connection between the zoom unit 3112 and the filter module 320.

In some embodiments, first electrical connector 3114 may also be integrally formed with first housing 3111 by in-mold molding. Meanwhile, when the position of the zoom unit 3112 changes, the positions of the first electrical connector 3114 and one end of the zoom unit 3112 may also change accordingly. For example, when the zoom unit 3112 is disposed in the first light-transmitting hole 31102, one end of the first electrical connector 3114 may be embedded in the first housing 3111 by an in-mold molding process and communicate with the first light-transmitting hole 31102, so that the zoom unit 3112 is electrically connected to the first electrical connector 3114. Further, in some embodiments, the first electrical connector 3114 may also be a flexible circuit board.

Since the first electrical connector 3114 is formed on the first housing 3111 by laser direct molding or in-mold molding, and it cannot be directly contacted with the zoom unit 3112 for electrical connection during molding, the first lens module 311 may further be provided with a conductive wire 3115 for electrical connection between the first electrical connector 3114 and the zoom unit 3112. As shown in fig. 5 and 10, a wire 3115 may be disposed on a side of the first housing 3111 away from the filter module 320, and one end of the wire 3115 may be connected to a side of the zoom unit 3112 close to the second lens module 312, that is, to the piezoelectric ceramic on the top plate a, and the other end may be connected to an end of the first electrical connector 3114 disposed on the first step surface 31111. The conductive wire 3115 may be formed between the zoom unit 3112 and the first electrical connector 3114 by a gold wire technique, and the diameter of the conductive wire 3115 at least includes specifications of 0.8mil, 0.9mil, or 1.0mil, so as to electrically connect the zoom unit 3112 and the first electrical connector 3114.

Further, in order to reduce the height of the conductive wire 3115 tilted in the optical axis direction Y to reduce the risk of breaking the conductive wire 3115, a groove 31103 may be further disposed on the first step surface 31111, the groove 31103 may further communicate with the mounting groove 31101, and a partial area of one end of the first electrical connector 3114 may be disposed in the groove 31103. Thus, a height difference can be formed between the zoom unit 3112 and the first electrical connector 3114 by the groove 31103, and when the wire 3115 is manufactured, the height difference between the zoom unit 3112 and the first electrical connector 3114 can absorb a part of the height of the wire 3115 tilted in the optical axis direction Y, so that not only can the risk of breaking the wire 3115 be reduced, but also the stacking space occupied by the wire 3115 in the optical axis direction Y can be reduced, and further the height of the camera module 300 in the optical axis direction Y can be reduced.

The second lens module 312 may be disposed on a side of the first housing 3111 away from the filter module 320, and the second lens module 312 may be a light-incident side of the camera module 300. As shown in fig. 5 to 6, the second lens module 312 may be provided with a second housing 3121 and a second lens unit 3122. The second housing 3121 may be disposed at a side of the first housing 3111 facing away from the filter module 320, the second lens unit 3122 may be disposed on the second housing 3121, and the second housing 3121 and the second lens unit 3122 may cover the mounting groove 31101 together. Specifically, the second housing 3121 may be provided with a second light transmission hole 31201, and the second light transmission hole 31201 may communicate with the mounting groove 31101. The second lens unit 3122 may be disposed inside the second light transmission hole 31201 and opposite to the zoom unit 3112 in the optical axis direction Y, and the second lens unit 3122 may be provided with an optical lens. The optical lens may be used to converge or diverge incident light to realize the propagation of light in the second lens module 312. In this embodiment, the number of the optical lenses may be one, and the material of the optical lenses may be plastic, and the surface shape thereof may be aspheric. Of course, the number of optical lenses can be increased according to design requirements, such as two, three, four or more. Meanwhile, the material of the optical lens is not limited to plastic, the material may be glass, and the surface type of the optical lens may be aspheric surface or spherical surface.

Further, the thickness of the second housing 3121 in the optical axis direction Y may not exceed 0.5mm, and the aperture of the second light-transmitting hole 31201 in the direction away from the first housing 3111 may be gradually reduced, only that the second light-transmitting hole 31201 can satisfy the light quantity required for imaging by the camera assembly 300. For example, the smaller aperture of the second light transmitting hole 31201 may be 2.2 mm. With this arrangement, not only the stacking space occupied by the second lens module 312 in the optical axis direction Y can be reduced, but also the area of the light-transmitting region required on the display screen 100 and the rear case 220 can be reduced. Particularly, when the camera module 300 is used as a front camera, the smaller aperture of the second light hole 31201 can reduce the area of the first light-transmitting region 110 designed on the display screen 100, so as to increase the screen area of the display screen 100. In some embodiments, the thickness of the second housing 3121 in the optical axis direction Y and the aperture of the second light-transmitting hole 31201 may also be limited to the above values, and the specific design dimensions of the two may be adjusted according to the camera assembly 300 and the number of the second optical lenses 31221 in the second light-transmitting hole 31201, which is not limited in this embodiment.

Table 1 shows the basic parameters of camera assembly 300 in one embodiment.

TABLE 1

Effective focal length (millimeter)	3.0～3.7
		Aperture	2.0～2.6
Total length of the machine (millimeter)	4.5～5.5
		Mechanical back coke (millimeter)	0.38～0.8
Angle of vision (degree)	75～100

Alternatively, the effective focal length of the camera assembly 300 may be 3mm, 3.41mm, 3.51mm, 3.61mm, or 3.7mm, the aperture may be 2.0, 2.2, 2.5, or 2.6, the total optical length may be 4.5mm, 4.6mm, 4.79mm, or 5.5mm, the mechanical back focus may be 0.5mm, 0.61mm, or 0.8mm, and the field angle may be 75 °, 80 °, 90 °, or 100 °.

Referring to fig. 11 to 15, fig. 11 is a schematic cross-sectional structure of the camera head assembly 300 at another position along v-v in fig. 3, fig. 12 is a schematic structural view of the filter module 320 in fig. 11, fig. 13 is a schematic partial enlarged view at Z in fig. 11, fig. 14 is a schematic cross-sectional structure of the camera head assembly 300 at another embodiment along v-v in fig. 3, and fig. 15 is a schematic structural view of the photosensitive module 330 in fig. 11.

The filter module 320 may be disposed on a side of the first housing 3111 away from the second housing 3121, and the filter module 320 may be used to filter stray light, so as to improve an imaging effect of the camera assembly 300. As shown in fig. 11 to 12, the filter module 320 may be provided with a third housing 321, a filter unit 322, and a second electrical connector 323. The third housing 321 may be disposed between the first housing 3111 and the photosensitive module 330. The filter unit 322 may be disposed on the third housing 321, which may be used to filter stray light. The second electrical connector 323 can also be disposed on the third housing 321, and can be electrically connected to the first electrical connector 3114 and the photosensitive module 330, respectively, to electrically connect the zoom unit 3112 and the photosensitive module 330.

The third housing 321 and the photosensitive module 330 may jointly enclose to form an accommodating cavity 3211 for accommodating a photosensitive device of the photosensitive module 330, and a third light hole 3212 communicated with the accommodating cavity 3211 is further disposed on one side of the third housing 321 away from the photosensitive module 330. The third light hole 3212 may be configured to mount the filter unit 322, and the third light hole 3212 may further communicate with the first light hole 31102, so that the filter unit 322 and the first lens unit 3113 are disposed opposite to each other in the optical axis direction Y. In this way, the light entering the accommodating space 101 can sequentially pass through the second lens unit 3122, the zoom unit 3112, the first lens unit 3113 and the filter unit 322, and irradiate onto the photosensitive device in the accommodating cavity 3211 for imaging.

The filter unit 322 may be an infrared ray cut filter lens for cutting infrared rays from passing through. The filter unit 322 may be a blue glass filter that absorbs infrared rays. The blue glass filter is different from other filters in raw material. The blue glass filter is made of blue glass (common filters are common optical glass), and has the effect of filtering infrared light in an absorption mode. Because of the higher transmittance of blue light, the glass filter has better transmittance than red-orange glass filter, can filter infrared light above 630nm (but allows the rest light with wide wave band from ultraviolet to infrared light to pass through), and can filter thoroughly. It should be noted that although the blue glass filter filters infrared light, there is no filter that can image objects brighter because all filters absorb certain wavelengths and darken the objects. The blue glass filter can cut off external infrared rays from entering the accommodating cavity 3211, so that the external infrared rays do not affect imaging of the camera assembly 300. In an embodiment, the filter unit 322 may be replaced by other kinds of filters.

The second electrical connector 323 may be disposed on an outer surface of the third housing 321, which may be used to electrically connect the first electrical connector 3114 and the photosensitive module 330. As shown in fig. 11 to 13, one end of the second electrical connector 323 may be disposed on one side of the third housing 321 close to the first housing 3111 and electrically connected to the first electrical connector 3114. The other end of the second electrical connector 323 can be disposed on a side of the third housing 321 close to the photosensitive module 330, and is electrically connected to the photosensitive module 330. Here, an orthographic projection of the first electric connector 3114 in the optical axis direction Y may overlap an orthographic projection of the second electric connector 323 in the optical axis direction Y, that is, the first electric connector 3114 and the second electric connector 323 may have regions disposed opposite to each other after the first housing 3111 and the third housing 321 are assembled. Thus, when the first lens module 311 and the filter module 320 are assembled, the first electrical connector 3114 and the second electrical connector 323 can be directly contacted to electrically connect the two.

Further, the second electrical connector 323 may be made of a conductive material such as metal, and the surface of the second electrical connector 323 has at least a copper plating layer of 8-12 μm, a nickel plating layer of 3-8 μm, a palladium plating layer of more than 0.1 μm, and a gold plating layer of more than 0.1 μm. Meanwhile, the second electric connector 323 has a resistance of not more than 200 milliohm at maximum between any two points, and the line width of the second electric connector 323 is at least 0.6 mm. Therefore, the corrosion resistance and oxidation resistance of the second electrical connector 323 can be improved, and the second electrical connector 323 can be ensured to have sufficient conductivity. In addition, the area occupied by the second electrical connector 323 on the side of the third housing 321 close to the photosensitive module 330 is at least 0.4 × 0.6mm²To provide a sufficient contact area for electrical connection between the second electrical connector 323 and the photosensitive module 330.

To avoid the first electrical connector 3114 and the second electrical connector 323 from contacting each other due to design tolerances, and thus failing to electrically connect the two, camera head assembly 300 may further be provided with a first conductive member 350. As shown in fig. 13, the first conductive member 350 may be disposed between the first electrical connector 3114 and the second electrical connector 323, and the first conductive member 350 may be in contact with the first electrical connector 3114 and the second electrical connector 323, respectively. The first conductive member 350 may be a conductive adhesive, and the first conductive member 350 may have a certain thickness. After the first lens module 311 and the filter module 320 are assembled, the first electrical connector 3114 and the second electrical connector 323 can interfere with the first conductive member 350 to a certain degree, so that the three components are in contact with each other, and the electrical connection reliability of the first electrical connector 3114 and the second electrical connector 323 is improved. In addition, in some embodiments, the first conductive member 350 may also be formed by soldering between the first electrical connector 3114 and the second electrical connector 323, so as to enhance the connection strength between the first conductive member 350 and the first electrical connector 3114 and the second electrical connector 323, and improve the electrical connection reliability between the first electrical connector 3114 and the second electrical connector 323.

In some embodiments, the first electric connector 3114 and the second electric connector 323 may also be arranged alternately in the optical axis direction Y, that is, the first electric connector 3114 and the second electric connector 323 do not have an area arranged oppositely after the first housing 3111 and the third housing 321 are assembled. At this time, the first conductive member 350 may still be disposed between the first housing 3111 and the third housing 321, and the first conductive member 350 may be connected to the first electrical connector 3114 and the second electrical connector 323 respectively, so as to electrically connect the first electrical connector 3114 and the second electrical connector 323.

In this way, the zoom unit 3112 may be electrically connected to the photosensitive module 330 through the first electrical connector 3114 and the second electrical connector 323, so that the zoom unit 3112 may implement a focusing function of the camera assembly 300. Meanwhile, since the first and second

electric connectors

3114 and 323 are formed on the first and

third housings

3111 and 321 by the same process, the first electric connector 3114 may be formed in the step of fabricating the first lens module 311, and the second electric connector 323 may be formed in the step of fabricating the filter module 320. After the first lens module 311 and the filter module 320 are assembled, the first electrical connector 3114 and the second electrical connector 323 can be electrically connected through the first conductive member 350 or directly contacted. Thus, compared to the scheme of performing independent routing layout to form conductive lines after the first lens module 311 and the filter module 320 are assembled, the split-type routing design of the first electrical connector 3114 and the second electrical connector 323 in this embodiment can omit the step of independent routing layout, simplify the assembly process of the camera assembly 300, and improve the assembly convenience of the camera assembly 300.

In some embodiments, the third housing 321 may also be a part of the first housing 3111, and the filtering unit 322 may also be directly disposed on the first housing 3111, so as to eliminate the design of the third housing 321 and the second electrical connector 323. As shown in fig. 14, the first housing 3111 may be disposed at one side of the photo module 330, and the first light-transmitting hole 31102 may be in communication with the photo module 330. The filter unit 322 may be disposed in the first light-transmitting hole 31102 and may be bonded and fixed to the first housing 3111. Meanwhile, the filter unit 322 may be located on a side of the first lens unit 3113 facing away from the zoom unit 3112, and loudness-set in the optical axis direction Y with the zoom unit 3112. The other end of the first electrical connector 3114 can be disposed on one side of the first housing 3111 close to the photo sensor module 330, and electrically connected to the photo sensor module 330.

The photosensitive module 330 may be disposed on a side of the third housing 321 away from the first housing 3111, and may be configured to receive incident light for imaging. As shown in fig. 11 and 15, the photosensitive module 330 may be provided with a circuit board 331 and a photosensitive chip 332. The circuit board 331 may be disposed on a side of the third housing 321 away from the first housing 3111, and the circuit board 331 and the third housing 321 may jointly enclose to form an accommodating cavity 3211. The photosensitive chip 332 may be disposed on a side of the circuit board 331 close to the third casing 321, and the photosensitive chip 332 may be disposed in the accommodating cavity 3211, and may be configured to receive light passing through the filtering unit 322 for imaging.

The circuit board 331 may be a flexible circuit board, and the circuit board 331 is disposed in the accommodating space 101 to be electrically connected to a main board of the electronic device 10. One end of the second electrical connector 323 may be disposed on a side of the third casing 321 close to the circuit board 331, and disposed opposite to the circuit board 331. Thus, after the filter module 320 and the photosensitive module 330 are assembled, the second electrical connector 323 and the circuit board 331 can be contacted to electrically connect the two. In some embodiments, the circuit board 331 may also be a rigid circuit board.

Accordingly, in order to avoid that the second electrical connector 323 and the circuit board 331 are not in contact due to design tolerance, so that the electrical connection between the two is failed, the camera head assembly 300 may be further provided with a second conductive member 360. As shown in fig. 13, the second conductive member 360 may be disposed between the second electrical connector 323 and the circuit board 331, and the second conductive member 360 may be in contact with the second electrical connector 323 and the circuit board 331, respectively. The second conductive member 360 may be a conductive adhesive, and the second conductive member 360 may have a certain thickness. After the filter module 320 and the photosensitive module 330 are assembled, the second electrical connector 323 and the circuit board 331 both interfere with the second conductive member 360 to a certain extent, so that the third electrical connector 323 and the circuit board 331 are in contact with each other, and the electrical connection reliability of the second electrical connector 323 and the circuit board 331 is improved.

In some embodiments, the second conductive member 360 may also be disposed between the third housing 321 and the circuit board 331, only the second conductive member 360 is connected to the second electrical connector 323 and the circuit board 331, respectively. In addition, in some embodiments, the second conductive member 360 may also be formed by soldering between the second electrical connector 323 and the circuit board 331, so as to enhance the connection strength between the second conductive member 360 and the second electrical connector 323 and the circuit board 331, and improve the electrical connection reliability between the second electrical connector 323 and the circuit board 331.

Table 2 shows the optical distortion values of the camera assembly 300 in one embodiment, and the distance to photograph an object is 35 cm.

TABLE 2

Distortion of		Article is at 35CM
			Field of view	Image height (mm)	Distortion value (0-10%)
0.0	0	0.00
			0.1	0.328	0.41
0.2	0.656	1.28
			0.3	0.985	2.45
0.4	1.313	3.44
			0.5	1.641	4.29
0.6	1.969	5.10
			0.7	2.297	5.50
0.8	2.626	5.44
			0.9	2.954	5.39
1.0	3.282	5.48

Table 3 shows MTF (modulation transfer function) values for camera head assembly 300 in one implementation.

TABLE 3

Table 4 shows RI (relative illuminance) values for camera assembly 300 in one embodiment.

TABLE 4

Field of view	Image height (mm)	Relative illumination (minimum value greater than 10%, 1.0 field of view greater than 20%)
			0.00	0	100
0.10	0.328	97.5
			0.20	0.656	89.9
0.30	0.985	80.2
			0.40	1.313	71.5
0.50	1.641	62.1
			0.60	1.969	54.1
0.70	2.297	46.9
			0.80	2.626	39.2
0.90	2.954	29.2
			0.95	3.118	24.8
1.00	3.282	20.3
			Maximum imaging circle	3.382	13.5

Table 5 shows the difference between the lens module CRA (chief ray angle) and the photo chip CAR in one embodiment of the camera assembly 300.

TABLE 5

Referring to fig. 16, fig. 16 is a graph of chromatic aberration of a camera assembly 300 according to an embodiment of the present application. As shown in FIG. 16, a curve L1 represents a light ray having a wavelength of 430nm to 555nm, a curve L2 represents a light ray having a wavelength of 470nm to 555nm, a curve L3 represents a light ray having a wavelength of 510nm to 555nm, a curve L4 represents a light ray having a wavelength of 610nm to 555nm, and a curve L5 represents a light ray having a wavelength of 650nm to 555 nm.

In order to prevent the display screen 100 or the rear case 220 from being displaced by an external force and interfering with the lens module 310 in the accommodating space 101, the camera assembly 300 may further include a protective cover 340. As shown in fig. 5, the protective cover 340 may be disposed on the second step surface 31112 of the first housing 3111, and the protective cover 340 may be disposed on the second lens module 312 and spaced apart from the second lens module 312. The protective cover 340 may further have a through hole 341 in a region corresponding to the second light hole 31201 in the optical axis direction Y, so that the second lens module 312 receives incident light through the through hole 341. Therefore, the protective cover 340 can protect the second lens module 312 on the premise that the light received by the second lens module 312 is not affected, and the second lens module 312 is prevented from being damaged due to the direct interference between the display screen 100 or the rear housing 220 and the second lens module 312. In some embodiments, the protective cover 340 may also be designed to be partially transparent or fully transparent, so that light can pass through the protective cover 340 and irradiate onto the second lens module 312.

Referring to fig. 17 to 19, fig. 17 is a schematic flowchart illustrating an assembling method of a camera assembly according to an embodiment of the present disclosure, fig. 18 is a schematic flowchart illustrating a first lens module provided in fig. 17, and fig. 19 is a schematic flowchart illustrating a filter module provided in fig. 17.

The assembling method of the camera assembly provided by the embodiment of the application can be used for assembling the camera assembly 300 in the above embodiment. As shown in fig. 17, the assembly method may include the steps of:

s10, a first lens module, a filter module and a photosensitive module are provided.

Specifically, the first lens module 311 may be provided with a first housing 3111, a zoom unit 3112, a first lens unit 3113, a first electric connector 3114, and a conductive wire 3115. The zoom unit 3112, the first lens unit 3113, the first electrical connector 3114 and the conductive wire 3115 may be disposed on the first lens module 311. The zoom unit 3112 and the first lens unit 3113 may be disposed opposite to each other in the optical axis direction Y. The wire 3115 may be in contact with the zoom unit 3112 and the first electrical connector 3114, respectively, to achieve electrical connection of the zoom unit 3112 and the first electrical connector 3114. The filter module 320 may be provided with a third housing 321, a filter unit 322, and a second electrical connector 323. The filtering unit 322 and the second electrical connector 323 may be disposed on the third case 321. The photosensitive module 330 may be provided with a circuit board 331 and a photosensitive chip 332. The photosensitive chip 332 may be disposed on the circuit board 331, and may be used for receiving light for imaging. The specific structures of the first lens module 311, the filter module 320 and the photosensitive module 330 can refer to the foregoing embodiments, and are not described herein. The following describes the manufacturing process of the first lens module 311 and the filter module 320. As shown in fig. 18 to 19, the steps of providing a first lens module 311 and a filter module 320 include:

s101, a first shell is provided.

The first housing 3111 may have a mounting groove 31101 and a first light-transmitting hole 31102 communicated with each other in the optical axis direction Y, and an outer side wall of the first housing 3111 departing from the first light-transmitting hole 31102 may be further provided with a stepped structure. The first housing 3111 may be manufactured by an integral molding process such as press molding, heat suction molding, and injection molding, but the first housing 3111 may also be manufactured by machining such as CNC. The specific structure of the first housing 3111 can refer to the foregoing embodiments of the camera assembly 300, and is not described herein again.

And S102, preparing a first electric connecting piece on the first shell by adopting a laser direct forming technology.

One end of the first electric connector 3114 may be disposed at one side of the first housing 3111, and the other end may be disposed at the other opposite side of the first housing 3111. The first electrical connector 3114 may be made of a conductive material such as metal, and the surface of the first electrical connector 3114 has at least a copper plating layer of 8-12 μm, a nickel plating layer of 3-8 μm, a palladium plating layer of more than 0.1 μm, and a gold plating layer of more than 0.1 μm. Meanwhile, the first electric connector 3114 has a resistance of not more than 200 milliohms at maximum between any two points, and the line width of the first electric connector 3114 is at least 0.6 mm. In addition, the area of the orthographic projection of the first electrical connector 3114 on the first step face 31111 is at least 0.5 × 0.6mm². The specific structure and arrangement of the first electrical connector 3114 can refer to the foregoing embodiments of the camera head assembly 300, and are not described herein again. In some embodiments, first electrical connector 3114 may also be fabricated on first housing 3111 by in-mold molding.

S103, adhering the zooming unit to the mounting groove, and adhering the first lens unit to the first light-transmitting hole.

Specifically, the zoom unit 3112 and the first housing 3111 may be bonded by performing dispensing at least two regions in the mounting groove 31101. Wherein the glue has at least two different elastic moduli, such as an elastic modulus within 100 and an elastic modulus within 25. Meanwhile, after the zoom unit 3112 is placed in the mounting groove 31101, the glue may be cured in at least two different curing manners, such as ultraviolet curing and heat curing, to quickly bond the first housing 3111 and the zoom unit 3112. Accordingly, the first lens unit 3113 may be fixed in the first light-transmitting hole 31102 by means of adhesion. The first lens unit 3113 may be provided with at least two optical lenses, and at least one of the at least two optical lenses is a free-form surface lens. The specific structure and arrangement of the zoom unit 3112 and the first lens unit 3113 can be found in the foregoing embodiments of the camera assembly 300, and are not described in detail herein.

And S104, preparing a conducting wire between the zooming unit and the first electric connecting piece by adopting a gold wire making technology.

One end of the wire 3115 may be connected to the zoom unit 3112, and the other end may be connected to the first electrical connector 3114, which may be used to electrically connect the zoom unit 3112 and the first electrical connector 3114. Wherein the diameter of the wire 3115 at least includes 0.8mil, 0.9mil, or 1.0 mil. Of course, the diameter of the conducting wire 3115 is not limited to the above specification, and the specific specification may be adjusted according to design requirements, so long as the conducting wire 3115 has sufficient conducting performance. The specific structure and layout of the conducting wires 3115 can be found in the embodiments of the camera module 300, and are not described in detail herein.

S105, providing a third shell.

The third housing 321 may be provided with a third light transmission hole 3212. The third housing 321 may be manufactured by an integrated forming process such as punch forming, heat absorption forming, and injection molding, but the third housing 321 may also be manufactured by machining such as CNC. The specific structure of the third housing 321 can refer to the foregoing embodiments, and is not described herein.

And S106, preparing a second electric connecting piece on the third shell by adopting a laser direct forming technology.

One end of the second electrical connector 323 may be disposed at one side of the third housing 321, and the other end may be disposed at the other opposite side of the third housing 321. The second electrical connector 323 can be made of a conductive material such as metal, and the surface of the second electrical connector 323 at least has a copper plating layer of 8-12 μm, a nickel plating layer of 3-8 μm, a palladium plating layer of more than 0.1 μm, and a gold plating layer of more than 0.1 μm. Meanwhile, the second electric connector 323 has a resistance of not more than 200 milliohm at maximum between any two points, and the line width of the second electric connector 323 is at least 0.6 mm. In addition, the area occupied by the second electrical connector 323 on the side of the third housing 321 close to the photosensitive module 330 is at least 0.4 × 0.6mm². The specific structure and layout of the second electrical connector 323 can be found in the embodiments of the camera module 300, and are not described hereinThe description is given. In some embodiments, second electrical connector 323 may also be formed on third housing 321 by in-mold molding.

S107, providing a filter unit, and bonding the filter unit into the third light-transmitting hole.

In particular, the filtering unit 322 may be a filter, which may be used to filter stray light. The filter unit 322 may be fixed in the third light hole 3212 by an adhesive. Of course, the filter unit 322 may also be fixed in the third light hole 3212 by an assembling method such as interference fit, welding, and clipping. The specific structure and layout of the filter unit 322 can be found in the embodiments of the camera module 300, and are not described herein. It should be noted that: for convenience of description, the foregoing steps are only specific sequences to describe the steps of fabricating a certain module; however, the modules may be made in a different order of steps, with additional steps added or certain steps reduced (combined).

And S20, adhering the filter module to the photosensitive module, and actively calibrating the positions of the first lens module and the filter module in the optical axis direction of the camera component by adopting an active alignment technology.

After the filter module 320 is manufactured, the filter module can be grabbed by a manipulator and connected with the photosensitive module 330 in a positioning manner. For example, dispensing may be performed on an area of the circuit board 331 of the photosensitive module 330 corresponding to the filter module 320, and then the robot grips the filter module 320 for positioning, and places the filter module 320 on the circuit board 331, so as to bond and fix the third housing 321 and the circuit board 331. Meanwhile, in the process of dispensing the circuit board 331, a conductive adhesive may be further attached to the circuit board 331 to form the second conductive member 360. When the filter module 320 and the photosensitive module 330 are bonded and fixed, the second conductive member 360 can be respectively connected to the second electrical connector 323 and the circuit board 331, so as to electrically connect the second electrical connector 323 and the circuit board 331. In some embodiments, the active alignment technique may be further used to calibrate the positions of the filter module 320 and the photosensitive module 330 in the optical axis direction Y, so as to bond the filter module 320 and the photosensitive module 330 at the optimal assembly position.

After the filter module 320 and the photosensitive module 330 are assembled, the positions of the first lens module 311 and the filter module 320 in the optical axis direction Y can be calibrated by using an active alignment technique, so as to reduce the assembly deviation between the first lens module 311 and the filter module 320 and improve the assembly yield. In this case, the first lens module 311 may be adjusted by a six-axis adjusting device to move left and right or tilt, so as to find the best assembling position of the first lens module 311 and the filter module 320.

And S30, positioning and connecting the first lens module and the filtering module after the calibration is finished.

After the calibration is completed, the first lens module 311 and the filter module 320 find the optimal mounting positions, and then the dispensing process can be performed at the corresponding mounting positions on the filter module 320, so that the first lens module 311 and the filter module 320 can be bonded and fixed at the optimal mounting positions, and the positioning connection between the first lens module 311 and the filter module 320 is realized. Meanwhile, in the process of dispensing the light filtering module 20, a conductive adhesive may be further attached to the light filtering module 320 to form the first conductive member 350. After the first lens module 311 and the filter module 320 are bonded and fixed, the first conductive member 350 can be connected to the first electrical connector 3114 and the second electrical connector 323 respectively, so as to electrically connect the first electrical connector 3114 and the second electrical connector 323. The first lens module 311 may be disposed on one side of the filter module 320, and the photosensitive module 330 may be disposed on the other opposite side of the filter module 320. In some embodiments, the first conductive member 350 may also be formed by soldering between the first electrical connector 3114 and the second electrical connector 323 after the first lens module 311 and the filter module 320 are bonded and fixed. In addition, in some embodiments, the first electrical connector 3114 and the second electrical connector 323 may be directly contacted when the first lens module 311 and the filter module 320 are adhesively fixed, so as to electrically connect the two.

S40, providing a second lens module, and actively aligning the positions of the first and second lens modules in the optical axis direction by using an active alignment technique.

The second lens module 312 may be disposed at a side of the first lens module 311 facing away from the filter module 320, and the second lens module 312 may be provided with a second housing 3121 and a second lens unit 3122. The second housing 3121 may be provided with a second light transmission hole 31201, and the aperture diameter of the second light transmission hole 31201 in a direction away from the first lens module 311 may be gradually reduced. After the first lens module 311 and the filter module 320 are assembled, the positions of the first lens module 311 and the second lens module 312 in the optical axis direction Y can be calibrated by using an active alignment technique, so as to reduce the assembly deviation between the first lens module 311 and the filter module 320 and improve the assembly yield. The second lens module 312 can be adjusted by a six-axis adjusting device to move left and right or tilt, so as to find the best assembling position of the second lens module 312 and the first lens module 311.

And S50, positioning and connecting the first lens module and the second lens module after the calibration is finished.

After the calibration is completed, the first lens module 311 and the second lens module 312 find the optimal assembling positions, and then the dispensing process can be performed at the corresponding assembling positions on the first lens module 311, so that the first lens module 311 and the second lens module 312 can be bonded and fixed at the optimal assembling positions, and the positioning connection between the first lens module 311 and the second lens module 312 is realized. It should be noted that: for convenience of description, the foregoing steps are merely a specific order of describing the assembly steps between the modules; however, the modules may be assembled in a different order of steps, with additional steps added or certain steps reduced (combined).

So, assemble through setting up camera assembly 300 into split type each module, and adopt the position of initiative alignment technique adjustment first lens module 311 and second lens module 312 on optical axis direction Y in the assembling process, can make first lens module 311, second lens module 312 and filter module 320 assemble at the optimum position, reduce manufacturing tolerance and assembly tolerance and give first lens module 311, the influence that second lens module 312 and filter module 320 assembled and bring, improve camera assembly 300's assembly yield.

The camera assembly 300 provided in the embodiment of the present application can be used to implement a focusing function of the camera assembly 300 by providing the zoom unit 3112 on the first lens module 311. Meanwhile, by providing the first lens unit 3113 on the first lens module 311, and the first lens unit 3113 has a free-form surface lens, the feature that the curvature radius of the vertex of the lens of the free-form surface lens is relatively flat can be utilized to reduce the mechanical back focus of the camera assembly 300, and reduce the height of the camera assembly 300 in the optical axis direction Y.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes performed by the content of the present application and the attached drawings, or directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A camera head assembly, characterized in that the camera head assembly comprises: the first lens module and the photosensitive module;

the first lens module is arranged on one side of the photosensitive module and is also provided with a zooming unit and a first lens unit; the zooming unit is electrically connected with the photosensitive module and is configured to be used for realizing focusing of the camera assembly; the first lens unit and the zoom unit are disposed opposite to each other in an optical axis direction of the camera assembly, and the first lens unit is configured to have a free-form surface lens.

2. The camera assembly of claim 1, wherein the first lens module is further provided with a first electrical connection;

one end of the first electric connecting piece is electrically connected with the zooming unit, and the other end of the first electric connecting piece is arranged on one side of the first lens module, which is close to the photosensitive module, and is electrically connected with the photosensitive module.

3. A camera assembly according to claim 2, further comprising: a second lens module;

the second lens module is arranged on one side of the first lens module, which is far away from the photosensitive module; the zooming unit is arranged on one side of the first lens module close to the second lens module; one end of the first electric connecting piece is also arranged on one side of the first lens module close to the second lens module and is electrically connected with the zooming unit.

4. A camera assembly according to claim 3, further comprising: a light filtering module;

the light filtering module is arranged between the first lens module and the photosensitive module and is provided with a second electric connector; one end of the second electric connecting piece is arranged on one side, close to the first lens module, of the light filtering module and is electrically connected with the first electric connecting piece; the other end of the second electric connector is arranged on one side, close to the photosensitive module, of the light filtering module and is electrically connected with the photosensitive module.

5. The camera assembly of claim 4, wherein the first lens module is further provided with a first housing;

the first shell is arranged on one side, away from the photosensitive module, of the light filtering module, and the first shell is provided with a mounting groove and a first light hole which are communicated; the zoom unit is arranged in the mounting groove, and the first lens unit is arranged in the first light-transmitting hole; the first electric connecting piece is arranged on the first shell, one end of the first electric connecting piece is arranged on one side, deviating from the light filtering module, of the first shell, and the other end of the first electric connecting piece is arranged on one side, close to the light filtering module, of the first shell.

6. The camera assembly of claim 5, wherein the second lens module is provided with a second housing and a second lens unit;

the second shell is arranged on one side, away from the light filtering module, of the first shell, and the second shell is provided with a second light hole; the second lens unit is arranged in the second light-transmitting hole and is opposite to the zooming unit in the optical axis direction, and the second shell and the second lens unit are jointly covered in the mounting groove; wherein the aperture of the first light-transmitting hole in the direction away from the first shell is gradually reduced.

7. The camera assembly of claim 5, wherein the filter module is provided with a third housing and a filter unit;

the third shell is arranged on one side, deviating from the zooming unit, of the first shell in the optical axis direction, and is provided with a third light hole; the light filtering unit is arranged in the third light transmitting hole and is opposite to the zooming unit in the direction of the optical axis; the second electric connecting piece is arranged on the third shell, one end of the second electric connecting piece is arranged on one side, close to the first shell, of the third shell, and the other end of the second electric connecting piece is arranged on one side, close to the photosensitive module, of the third shell.

8. A camera assembly according to claim 5, wherein the zoom unit comprises: a housing and an elastomeric transparency;

the shell is arranged in the mounting groove and comprises a top plate, a side plate and a bottom plate, the top plate is connected with the side plate, the bottom plate and the top plate are oppositely arranged to form an accommodating space, and the top plate is also provided with an electrode electrically connected with the first electric connecting piece;

the elastic transparent body is arranged in the accommodating space between the bottom plate and the top plate, and two opposite side surfaces of the elastic transparent body are respectively connected with the bottom plate and the top plate; the relative position between the top plate and the bottom plate is configured to change after being electrified, and the elastic transparent body can deform along with the change of the relative position, so that focusing is realized.

9. The camera assembly of claim 3, wherein the first lens module is further provided with a first housing and a filter unit;

the first shell is arranged on one side of the photosensitive module and is provided with a mounting groove and a first light hole which are communicated; the zooming unit is arranged in the mounting groove, the first lens unit and the light filtering unit are arranged in the first light-transmitting hole, and the light filtering unit is positioned on one side of the first lens unit, which is far away from the zooming unit, and is arranged opposite to the zooming unit in the direction of the optical axis; first electric connector set up in on the first casing, just first electric connector's one end set up in first casing deviates from one side of sensitization module, the other end set up in first casing is close to one side of sensitization module.

10. The camera assembly of claim 1, wherein the camera assembly has an overall mechanical length of 4.5-5.5 mm, an effective focal length of 3-3.7 mm, and a mechanical back focus of 0.38-0.8 mm.

11. The camera assembly of claim 1, wherein the aperture of the camera assembly is 2.0-2.6 and the field angle of the lens module is 75-100 °.

12. An electronic device, characterized in that the electronic device comprises: a display screen, a mounting housing, and the camera assembly of any of claims 1-11;

the display screen is arranged on the mounting shell and forms an accommodating space together with the mounting shell in an enclosing manner; the camera assembly is arranged in the accommodating space.