CN117687170A - Lens, camera module and electronic equipment - Google Patents

Lens, camera module and electronic equipment Download PDF

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Publication number
CN117687170A
CN117687170A CN202311059197.1A CN202311059197A CN117687170A CN 117687170 A CN117687170 A CN 117687170A CN 202311059197 A CN202311059197 A CN 202311059197A CN 117687170 A CN117687170 A CN 117687170A
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China
Prior art keywords
lens
peripheral surface
lenses
camera module
spacer
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Pending
Application number
CN202311059197.1A
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Chinese (zh)
Inventor
王新权
祖嘉琦
罗越
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Honor Device Co Ltd
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Honor Device Co Ltd
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Publication date
Application filed by Honor Device Co Ltd filed Critical Honor Device Co Ltd
Priority to CN202311059197.1A priority Critical patent/CN117687170A/en
Publication of CN117687170A publication Critical patent/CN117687170A/en
Pending legal-status Critical Current

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Abstract

The application provides a camera lens, module and electronic equipment make a video recording, the size of camera lens is less, can reduce the volume of the module of making a video recording, helps the miniaturized design of the module of making a video recording. The lens comprises a plurality of lenses, the lenses are sequentially arranged in the direction from the object side to the image side, and at least one lens is in an exposed state. In the lens shown in the application, the lens can not comprise a lens barrel, at least one lens is in an exposed state, the space occupied by the lens barrel can be saved, the size of the lens can be reduced, the volume of the camera module can be reduced, and the miniaturized design of the camera module can be facilitated. In addition, the space occupied by the lens barrel is saved, so that the size of the lens can be increased, and the aperture can be increased while the volume of the camera module is effectively reduced.

Description

Lens, camera module and electronic equipment
Technical Field
The application relates to the technical field of imaging, in particular to a lens, a camera module and electronic equipment.
Background
With the continuous development of science and technology, mobile phones and computer electronic devices are widely applied to daily life and work of people, and have become indispensable daily necessities of people, and a camera module is one of indispensable core components of electronic devices. However, in the current common camera module, the lens barrel is often required to wrap the lens so as to play a role in fixing the lens, and the size of the camera module is limited by the size of the lens barrel, so that the miniaturization design of the camera module is not facilitated.
Disclosure of Invention
The application provides a camera lens, module and electronic equipment make a video recording, the size of camera lens is less, can reduce the volume of the module of making a video recording, helps the miniaturized design of the module of making a video recording.
In a first aspect, the present application provides a lens assembly, including a plurality of lenses, in a direction from an object side to an image side, the plurality of lenses are sequentially arranged, and at least one lens is in an exposed state.
In the lens shown in the application, the lens can not comprise a lens barrel, at least one lens is in an exposed state, the space occupied by the lens barrel can be saved, the size of the lens can be reduced, the volume of the camera module can be reduced, and the miniaturized design of the camera module can be facilitated. In addition, the space occupied by the lens barrel is saved, so that the size of the lens can be increased, and the aperture can be increased while the volume of the camera module is effectively reduced.
In one embodiment, the peripheral surfaces of the plurality of lenses are all flush, or the peripheral surface of one lens includes at least one first peripheral surface portion and at least one second peripheral surface portion, each first peripheral surface portion being located inside the peripheral surface of the other lens, each second peripheral surface portion being flush with the peripheral surface of one lens.
Among the camera lens that this application shows, accessible is cut edge to the lens to further reduce the size of camera lens, help further reducing the height of camera module, realize the miniaturized design of camera module.
In one embodiment, the lens further comprises at least one spacer ring and at least two first connecting layers, each spacer ring is located between two adjacent lenses, and each first connecting layer is connected between one lens and one spacer ring.
In the lens that this application shows, the camera lens does not include the lens cone, realizes the assembly through spacer ring and first tie coat between two adjacent lenses, because the camera lens does not include the lens cone, can save the space that the lens cone occupy, helps reducing the size of camera lens, reduces the height of camera module, increases the light ring. In other words, the camera module shown in the embodiment adopts the lens, so that the size of the camera module can be effectively reduced while the camera module has a large aperture.
In one embodiment, the outer peripheral surface of the spacer is flush with the peripheral surface of one lens, or the outer peripheral surface of the spacer includes at least one third peripheral surface portion and at least one fourth peripheral surface portion, each third peripheral surface portion being located inside the peripheral surface of one lens, each fourth peripheral surface portion being flush with the peripheral surface of one lens.
Among the camera lens that this application shows, accessible is cut edge to the spacer ring to further reduce the size of camera lens, help further reducing the height of camera module, realize the miniaturized design of camera module.
In one embodiment, the spacer is provided with a light blocking structure, and the blue light structure is arranged on the inner peripheral surface of the spacer and is positioned between two adjacent lenses. The light blocking structure can limit the quantity of light rays emitted from the light emitting surface of one lens to the light entering surface of the other lens in the direction from the object side to the image side, namely, the light blocking structure can control the light entering quantity of the other lens, and the imaging quality of the imaging module is improved.
In one embodiment, the spacer is made of plastic or metal.
In one embodiment, the lens is made of plastic or glass.
In one embodiment, the light incident surface of the lens may be a spherical surface or an aspherical surface, and/or the light incident surface of the lens may be a spherical surface or an aspherical surface.
In one embodiment, the lens further comprises at least one second connection layer, and each second connection layer is connected between two adjacent lenses.
In the lens that this application shows, the lens does not include the lens cone, and accessible second tie-layer realization assembly between two adjacent lenses is owing to the lens does not include the lens cone, can save the space that the lens cone took, helps reducing the size of lens, reduces the height of camera module, increases the light ring. In other words, the camera module shown in the embodiment adopts the lens, so that the size of the camera module can be effectively reduced while the camera module has a large aperture.
In one embodiment, the lens further comprises a lens barrel, wherein the lens barrel is arranged on one side of at least one lens, and at least one lens is arranged on the inner side of the lens barrel.
In one embodiment, the inner peripheral surface of the lens barrel is located at the inner side of the peripheral surface of one lens, and the lens barrel can multiplex the height space of one lens, so that the space occupation of the lens barrel in the height direction of the lens is reduced, the size of the lens is reduced, the height of the camera module is reduced, and the aperture is increased.
Wherein the outer peripheral surface of the lens barrel may be flush with the peripheral surface of one lens, or the outer peripheral surface of the lens barrel may be located inside the peripheral surface of one lens, or the outer peripheral surface of the lens barrel may be located outside the peripheral surface of one lens.
In one embodiment, the lens further comprises a first shading layer, the first shading layer covers the non-effective diameter part of at least one lens, the first shading layer can not only prevent stray light from entering the lens, but also absorb the stray light in the lens, so that the imaging quality of the imaging module is prevented from being influenced by the stray light in the lens, and the imaging quality of the imaging module is improved.
In a second aspect, the present application provides an image capturing module, including a lens base and any one of the above lenses, where the lens is mounted on an inner side of the lens base.
In the camera module shown in this application, the camera lens can not include the lens cone, and at least one lens is in exposing state, can save the space that the lens cone took, helps reducing the size of camera lens, reduces the volume of camera module, helps the miniaturized design of camera module. In addition, the space occupied by the lens barrel is saved, so that the size of the lens can be increased, and the aperture can be increased while the volume of the camera module is effectively reduced.
In an embodiment, the plurality of lenses includes a first lens closest to the object side, and the lens further includes a second light shielding layer, where the second light shielding layer is disposed in an edge area of the light incident surface of the first lens, and the second light shielding layer may be used as a diaphragm of the lens to control the light incident amount of the lens. The second light shielding layer and the first light shielding layer can be integrally formed.
In an embodiment, the plurality of lenses includes a first lens closest to the object side, and the image capturing module further includes a diaphragm, where the diaphragm is disposed on the lens base and is disposed opposite to an edge area of the light incident surface of the first lens, so as to control the light incident amount of the lens.
In one embodiment, the camera module further comprises a connecting part, wherein the connecting part is fixedly connected between the lens base and the lens, so that the assembly between the lens base and the lens is realized.
In one embodiment, the connecting portion includes a first sub-connecting portion and a second sub-connecting portion, the first sub-connecting portion is disposed on an outer peripheral surface of the lens, and the second sub-connecting portion is disposed on an inner peripheral surface of the lens base. The first sub-connection portion may be provided on at least one of a peripheral surface of the lens, an outer peripheral surface of the spacer, and an outer peripheral surface of the barrel.
The first sub-connecting portion and the second sub-connecting portion are both glued, or the first sub-connecting portion and the second sub-connecting portion are both false threads, or the first sub-connecting portion and the second sub-connecting portion are both true threads, or the first sub-connecting portion and the second sub-connecting portion are in snap fit.
In a third aspect, an electronic device is provided, including an image processor and any one of the above-mentioned camera modules, where the camera module is electrically connected to the image processor.
In the camera module that this electronic equipment shown in this application adopted, the camera lens can not include the lens cone, and at least one lens is in exposing state, can save the space that the lens cone took, helps reducing the size of camera lens, reduces the volume of camera module, helps the miniaturized design of camera module. In addition, the space occupied by the lens barrel is saved, so that the size of the lens can be increased, and the aperture can be increased while the volume of the camera module is effectively reduced.
Drawings
In order to more clearly describe the technical solutions in the embodiments or the background of the present application, the following description will describe the drawings that are required to be used in the embodiments or the background of the present application.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
FIG. 2 is a schematic view of a partial structure of a camera module in the electronic device shown in FIG. 1 in a first embodiment;
FIG. 3 is a schematic view of a partial structure of the camera module in the electronic device shown in FIG. 1 in a second embodiment;
fig. 4 is a schematic structural diagram of a lens of the camera module in the electronic device shown in fig. 1 in a third embodiment;
fig. 5 is a schematic structural diagram of a lens of the camera module in the electronic device shown in fig. 1 in a fourth embodiment;
fig. 6 is a schematic structural diagram of a lens of the camera module in the electronic device shown in fig. 1 in a fifth embodiment;
fig. 7 is a schematic structural diagram of a lens of the camera module in the electronic device shown in fig. 1 in a sixth embodiment;
fig. 8 is a schematic structural diagram of a lens of the camera module in the electronic device shown in fig. 1 in a seventh embodiment;
fig. 9 is a schematic partial structure of an image capturing module in the electronic device shown in fig. 1 in an eighth embodiment;
FIG. 10 is a schematic view of a lens assembly of the camera module of FIG. 9 at an angle;
fig. 11 is a schematic structural diagram of a lens of the camera module in the electronic device shown in fig. 1 in a ninth embodiment;
FIG. 12 is a schematic view of the lens of FIG. 11 at a first angle;
FIG. 13 is a schematic view of the lens of FIG. 11 at a second angle;
FIG. 14 is a schematic view of the lens barrel of FIG. 11 at a third angle;
fig. 15 is a schematic structural diagram of the camera module shown in the first embodiment;
FIG. 16a is a graph of spherical aberration of the camera module of FIG. 15;
FIG. 16b is an astigmatic field plot of the camera module of FIG. 15;
FIG. 16c is a distortion chart of the camera module of FIG. 15;
fig. 17 is a schematic structural diagram of an image capturing module according to the second embodiment;
FIG. 18a is a graph of spherical aberration of the camera module of FIG. 17;
FIG. 18b is an astigmatic field plot of the camera module of FIG. 17;
FIG. 18c is a distortion chart of the camera module of FIG. 17;
fig. 19 is a schematic structural view of an image capturing module according to a third embodiment;
FIG. 20a is a graph of spherical aberration of the camera module of FIG. 19;
FIG. 20b is an astigmatic field plot of the camera module of FIG. 19;
fig. 20c is a distortion diagram of the camera module shown in fig. 19.
Detailed Description
Embodiments of the present application are described below with reference to the accompanying drawings in the embodiments of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device 1000 according to an embodiment of the present application.
The electronic device 1000 may be an electronic product with a camera function, such as a mobile phone, a tablet computer, a notebook computer, a car machine, a point-of-sale terminal (point of sales terminal, abbreviated as POS machine), or a wearable device. The wearable device may be a smart bracelet, a smart watch, augmented reality (augmented reality, AR) glasses, virtual Reality (VR) glasses, or the like, among others. The embodiment of the present application will be described by taking the electronic device 1000 as an example of a mobile phone.
In this embodiment, the electronic device 1000 includes a housing 100, a display module 200, a camera module 300, and an image processor 400. The display module 200 is mounted on one side of the housing 100, and the camera module 300 and the image processor 400 are both mounted inside the housing 100. The inside of the housing 100 is the inside of the electronic device 1000.
The case 100 includes a frame 110 and a rear cover 120, and the rear cover 120 is fixed to one side of the frame 110. The frame 110 may be a middle frame of the electronic device 1000, and the rear cover 120 may be a battery cover of the electronic device 1000. The frame 110 and the rear cover 120 may be fixed to each other by assembly, or may be integrally formed members. In other embodiments, the housing 110 may be other structural members for supporting the electronic device 1000.
The display module 200 is mounted on a side of the frame 110 facing away from the rear cover 120. That is, the display module 200 and the rear cover 120 are respectively fixed to opposite sides of the frame 110. When a user uses the electronic device 1000, the display module 200 is set towards the user, and the rear cover 120 is set away from the user. The display module 200 may be a display screen such as an LCD (liquid crystal display) or an OLED (organic light-emitting diode) and is used for displaying information such as images or text.
The camera module 300 and the image processor 400 are both mounted inside the housing 110. In this embodiment, the camera module 300 is located at a side of the electronic device 1000 away from the display module 200, and is used as a rear camera module of the electronic device 1000. The image capturing surface (not shown) of the image capturing module 300 may be exposed with respect to the rear cover 120. The camera module 300 can collect light outside the electronic device 1000 through the camera surface and form corresponding image data.
The fact that the image capturing surface of the image capturing module 300 is exposed to the rear cover 120 means that the rear cover 120 does not cover the image capturing surface of the image capturing module 300. At this time, the image capturing surface of the image capturing module 300 may be flush with the surface of the rear cover 120 facing away from the display module 200, or the image capturing surface of the image capturing module 300 may be located on the side of the surface of the rear cover 120 facing away from the display module 200 facing toward the display module 200, or the image capturing surface shell of the image capturing module 300 may be located on the side of the rear cover 120 facing away from the display module 200.
In other embodiments, the camera module 300 may also be located on a side of the electronic device 1000 near the display module 200, and used as a front camera module of the electronic device 1000. In other words, the camera module 300 can be used as a front camera module of the electronic device 1000 or as a rear camera module of the electronic device 1000. Alternatively, the electronic device 1000 may include a plurality (two or more) of camera modules 300, at least one camera module 300 serving as a front camera module of the electronic device 1000 and at least one camera module 300 serving as a rear camera module of the electronic device 1000.
The image processor 400 is electrically connected to the camera module 300, and the image processor 400 is configured to acquire image data from the camera module 300 and process the image data. The image data processed by the image processor 400 may be displayed on the display module 200, may be stored in a memory of the electronic device 1000, or may be stored in the cloud through the electronic device 1000. The image processor 400 may be a central processing unit (CPU, central processing unit) of the electronic device 1000.
Referring to fig. 2 together, fig. 2 is a schematic diagram illustrating a partial structure of the camera module 300 in the electronic device 1000 shown in fig. 1 according to the first embodiment.
The camera module 300 includes an image sensor (not shown), a filter 310, a lens mount 320, and a lens 330. The image sensor is electrically connected to the image processor 400 to electrically connect the camera module 300 to the image processor 400. The filter 310, the lens mount 320 and the lens 330 are all mounted on the same side of the image sensor. The lens 330 is mounted inside the lens base 320. The lens 330 is capable of converging light rays outside the electronic device 1000 and projecting the converged light rays to the image sensor through the optical filter 310 to form an image on the imaging surface 301 of the image sensor.
In the lens of the current common camera module, the lens barrel is often required to wrap the lens so as to play a role in fixing the lens, and the size of the lens barrel limits the height, width, head and other sizes of the camera module, so that the miniaturization design of the camera module is not facilitated. For periscope type lens module, receive the high restriction of module of making a video recording, the aperture of camera lens often can't make big, and prior art reduces the module height of making a video recording through the mode of cutting the lens, and technology complicacy and yield are low, also have the influence to the imaging performance of making a video recording the module. Next, the image capturing module 300 shown in the embodiment of the present application will be described.
Lens 330 includes lens 340, spacer 350, connection layer 360, and light shielding layer 370. In this embodiment, there are three lenses 340, one spacer 350, three connection layers 360, and two light shielding layers 370. The three lenses 340 are a first lens 341, a second lens 342, and a third lens 343, respectively. The first lens element 341, the second lens element 342 and the third lens element 343 are disposed in order from the object side to the image side. Specifically, the peripheral surface (not shown) of the first lens 341, the peripheral surface (not shown) of the second lens 342, and the peripheral surface (not shown) of the third lens 343 are flush. Wherein, the first lens 341, the second lens 342 and the third lens 343 are all in an exposed state. For example, each lens 340 may be made of glass (G) or plastic (P), and the light incident surface and the light emergent surface of each lens 340 may be spherical or aspherical.
It should be understood that reference to "exposed state" when describing the lens 340 in this application means that the lens 340 is not located inside a lens barrel (not shown), and the following related similar will be understood similarly. It should be noted that, in other embodiments, at least one lens 340 may be exposed, or two or four lenses 340 may be provided, and at least one lens 340 is exposed, which is not particularly limited in this application.
The spacer 350 has one, and the spacer 350 is located between the second lens 342 and the third lens 343. Specifically, the spacer 350 is located between the light-emitting surface (not shown) of the second lens element 342 and the light-entering surface (not shown) of the third lens element 343. Wherein the outer circumferential surface (not shown) of the spacer 350 may be flush with the circumferential surface of the second lens 342 and the circumferential surface of the third lens 343. For example, spacer 350 may be made of plastic or metal.
The spacer 350 may be provided with a light blocking structure 350a, where the light blocking structure 350a is disposed on the inner peripheral surface of the spacer 350, extends from the inner peripheral surface of the spacer 350 in a direction away from the outer peripheral surface, and is located between the second lens 342 and the third lens 343. The light blocking structure 350a can limit the amount of light emitted from the light emitting surface of the second lens 342 to the light incident surface of the third lens 343, i.e. the light blocking structure 350a can control the light incident amount of the third lens 343, which is beneficial to improving the imaging quality of the image capturing module 300.
The three connection layers 360 are two first connection layers 361 and one second connection layer 362, respectively. Each first connection layer 361 is located between one lens 340 and a spacer 350, and is connected between one lens 340 and a spacer 350. Specifically, one first connection layer 361 is located between the second lens 342 and the spacer 350 and is connected between the second lens 342 and the spacer 350, and the other first connection layer 361 is located between the spacer 350 and the third lens 343 and is connected between the spacer 350 and the third lens 343. One first connecting layer 361 is connected between the light emitting surface (not shown) of the second lens 342 and the surface (not shown) of the spacer 350 facing the second lens 342, and the other first connecting layer 361 is connected between the surface (not shown) of the spacer 350 facing the third lens 343 and the light entering surface (not shown) of the third lens 343. For example, the first connecting layer 361 may be an adhesive layer, for example, the first connecting layer 361 is a transparent adhesive layer, or the first connecting layer 361 is an opaque adhesive layer, one first connecting layer 361 is connected to an edge region of the light emitting surface of the second lens 342, and the other first connecting layer 361 is connected to an edge region of the light entering surface of the third lens 343, so as to reduce interference of the first connecting layer 361 on light.
The second connection layer 362 is located between the first lens 341 and the second lens 342, and is connected between the first lens 341 and the second lens 342. The second connection layer 362 is connected between the light-emitting surface (not shown) of the first lens 341 and the light-entering surface (not shown) of the second lens 342. For example, the second connection layer 362 may be a glue layer, for example, the second connection layer 362 may be a transparent glue layer to reduce interference of the second connection layer 362 to light, and in this case, the first lens 341, the second lens 342, and the second connection layer 362 may form a double-cemented lens structure. It should be noted that, in other embodiments, the lens 330 may not include the second connection layer 362, and the first lens 341 and the second lens 342 may be assembled by fastening with each other, which is not particularly limited in this application.
The two light shielding layers 370 are a second light shielding layer 371 and a first light shielding layer 372, respectively. The second light shielding layer 371 covers an edge region of the light incident surface 3411 of the first lens 341. The second light shielding layer 371 may be used as a stop of the lens 330 to control the light entering amount of the lens 330. The first light shielding layer 372 is connected to the second light shielding layer 371, and covers the peripheral surface of the first lens 341, the peripheral surface of the second lens 342, the peripheral surface of the third lens 343, the edge region of the light emitting surface of the third lens 343, and the outer peripheral surface of the spacer 350, so that stray light can be prevented from entering the lens 330, stray light inside the lens 330 can be absorbed, the imaging quality of the imaging module 300 is prevented from being affected by the stray light inside the lens 330, and the imaging quality of the imaging module 300 is improved. Wherein, the second light shielding layer 371 and the first light shielding layer 372 may be integrally formed. For example, the second light shielding layer 371 and the first light shielding layer 372 may each be a black ink layer.
In other embodiments, the first light shielding layer 372 may cover at least one of the non-effective diameter portion of the first lens 341, the non-effective diameter portion of the second lens 342, the non-effective diameter portion of the third lens 343, and the outer circumferential surface of the spacer 350. The non-effective diameter portion of the lens is a portion of the lens that does not affect light passing through the lens, for example, a peripheral surface of the lens, an edge region of the light incident surface, and an edge region of the light emergent surface.
The lens base 320 is disposed around the lens 330 and is fixedly connected to the spacer 350. In the present embodiment, the lens base 320 may be a motor. Illustratively, the motor may be an autofocus motor capable of driving the lens 330 to move in the optical axis direction of the lens 330. Alternatively, the motor may be an optical anti-shake motor capable of driving the lens 340 to move on a plane perpendicular to the optical axis of the lens 330, or driving the lens 340 to tilt with respect to the optical axis of the lens 330. Alternatively, the motor may be an auto focus and optical anti-shake motor. Illustratively, the motor may be a Voice Coil Motor (VCM), a memory alloy motor, or the like. The specific function and type of motor is not strictly limited in this application. In other embodiments, the lens base 320 may also be a stand structure. At this time, the camera module 300 is a fixed focus module.
In addition, the camera module 300 further includes a connection portion 380, and the connection portion 380 is connected between the lens base 320 and the lens 330 to achieve the assembly between the lens base 320 and the lens 330. Specifically, the connection portion 380 is connected between the lens base 320 and the spacer 350. Wherein the connection portion 380 is connected between the inner peripheral surface of the lens base 320 and the outer peripheral surface of the spacer 350. Illustratively, the connection 380 is adhesive.
In other embodiments, the connection portion 380 may include a first sub-connection portion and a second sub-connection portion, the first sub-connection portion is disposed on the outer peripheral surface of the spacer ring 350, the second sub-connection portion is disposed on the inner peripheral surface of the lens base 320, and the first sub-connection portion and the second sub-connection portion are connected to each other to achieve the assembly between the spacer ring 350 and the lens base 320. For example, the first sub-connecting portion and the second sub-connecting portion are both glued, or the first sub-connecting portion and the second sub-connecting portion are both false threads, or the first sub-connecting portion and the second sub-connecting portion are both true threads, or the first sub-connecting portion and the second sub-connecting portion are in snap fit. It will be appreciated that the connection 380 may also be connected between the lens mount 320 and the non-effective diameter portion of the lens 340. When the connection portion 380 includes a first sub-connection portion and a second sub-connection portion, the first sub-connection portion may be disposed at a non-effective diameter portion of the lens 340.
It should be noted that, during the assembly process of the camera module 300, the assembly may be performed by an Active Alignment (AA) process to ensure the reliability of the camera module 300. It should be understood that the AA process of the camera module refers to a process of curing the glue after fine-tuning the relative positions of the elements of the camera module when the elements of the camera module are fixed by the glue so that the optical imaging of the camera module 300 meets the requirements.
In the image capturing module 300 according to the present embodiment, the lens 330 does not include a lens barrel, and the adjacent two lenses 340 are assembled through the connecting layer 360 or the spacer 350, so that the space occupied by the lens barrel can be saved because the lens 330 does not include a lens barrel, which is helpful for reducing the size of the lens 330, reducing the height of the image capturing module 300, and increasing the aperture. In other words, the camera module 300 according to the present embodiment can effectively reduce the size of the camera module 300 while having a large aperture by using the lens 330.
It is understood that the aperture size of the camera module 300 is proportional to the head size of the camera module 300. When the camera module 300 is a periscope camera module, the height of the camera module 300 can be reduced by adopting the lens 330, and when the camera module 300 is a vertical rear camera module or a front camera module, the head size of the camera module 300 can be reduced by adopting the lens 330.
Taking the camera module 300 as a periscope type tele camera module as an example, the camera performance of the camera module 300 shown in this embodiment will be described. In the lens 330, three lenses 340 are made of 2G1P, that is, two lenses 340 are made of glass and one lens 340 is made of plastic. At this time, the resolution (resolution) of the image capturing module 300 is 20M, the pixel size (pixel size) is 0.7 μm, the Image Height (IH) is 4.48mm, the field angle (FOV) is 23 °, the equivalent focal length is 107mm, the aperture value (f#) is about 2.9, the total lens length (TTL, total track length) is 10.23mm, and the effective focal length (EFL, effective focal length) is 11mm. Therefore, since the lens 330 does not use a lens barrel, the head diameter of the camera module 300 can be 3.8mm, and the height of the camera module 300 can be reduced without trimming the lens 340 in the lens 330, the size of the camera module 300 can be reduced, and the camera module 300 has a large F-number, which is beneficial to increasing the light entering amount of the camera module 300 and improving the optical performance of the camera module 300.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating a partial structure of an image capturing module 300 in the electronic device 1000 shown in fig. 1 according to a second embodiment. Fig. 3 does not show the optical filter 310 in the image capturing module 300 shown in fig. 2.
The image capturing module 300 according to the present embodiment is different from the image capturing module 300 according to the first embodiment in that the image capturing module 300 further includes a diaphragm 390, and the diaphragm 390 is mounted on the inner side of the lens base 320, is located on the light entrance side of the first lens 341, and is disposed opposite to the edge region of the light entrance surface of the first lens 341. Wherein the diaphragm 390 may function to control the amount of light entering the lens 330. In other embodiments, the lens 330 may not include the second light shielding layer 371.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a lens 330 of the camera module 300 in the electronic device 1000 shown in fig. 1 according to a third embodiment.
The lens 330 of the image capturing module 300 according to the present embodiment is different from the lens 330 of the image capturing module 300 according to the first and second embodiments in that the number of lenses 340 is four, the number of spacers 350 is two, and the number of connection layers 360 is five. The four lenses 340 are a first lens 341, a second lens 342, a third lens 343, and a fourth lens 344, respectively. The first lens element 341, the second lens element 342, the third lens element 343 and the fourth lens element 344 are disposed in order from the object side to the image side. Wherein the circumferential surface of the first lens 341, the circumferential surface of the second lens 342, the circumferential surface of the third lens 343, and the circumferential surface of the fourth lens 344 are flush. It should be noted that the structures of the first lens 341, the second lens 342, and the third lens 343 may be respectively described with reference to the first lens 341, the second lens 342, and the third lens 343 in the image capturing module 300 according to the first embodiment, which are not described herein.
The two spacers 350 are a first spacer 351 and a second spacer 352, respectively. The first spacer 351 is located between the second lens 342 and the third lens 343. Wherein the outer peripheral surface of the first spacer 351 is flush with the peripheral surface of the second lens 342 and the peripheral surface of the third lens 343. It should be noted that, the structure of the first spacer 351 can refer to the related description of the spacer 350 in the camera module 300 in the first embodiment, which is not described herein.
The second spacer 352 is located between the third lens 343 and the fourth lens 344. Specifically, the second spacer 352 is located between the light exit surface (not shown) of the third lens 343 and the light entrance surface (not shown) of the fourth lens 344. Wherein the outer circumferential surface of the second spacer 352 is flush with the circumferential surface of the third lens 343 and the circumferential surface of the fourth lens 344.
The five connection layers 360 are four first connection layers 361 and one second connection layer 362, respectively. A second connection layer 362 is located between the first lens 341 and the second lens 342, and is connected between the first lens 341 and the second lens 342. A first connecting layer 361 is positioned between the second lens 342 and the first spacer 351 and is connected between the second lens 342 and the first spacer 351. A first connection layer 361 is positioned between the first spacer 351 and the third lens 343 and is connected between the first spacer 351 and the third lens 343. It should be noted that the structures of the first lens 341, the second lens 342, and the third lens 343 may be respectively described with reference to the first lens 341, the second lens 342, and the third lens 343 in the image capturing module 300 according to the first embodiment, which are not described herein.
A first connecting layer 361 is positioned between the fourth lens 344 and the second spacer 352 and is connected between the fourth lens 344 and the second spacer 352. Wherein, a first connecting layer 361 is connected between the light-emitting surface (not shown) of the fourth lens 344 and the surface (not shown) of the second spacer 352 facing the fourth lens 344. A first connecting layer 361 is positioned between the second spacer 352 and the fourth lens 344 and is connected between the second spacer 352 and the fourth lens 344. Wherein, a first connecting layer 361 is connected between a surface (not shown) of the second spacer 352 facing the fourth lens 344 and a light incident surface (not shown) of the fourth lens 344.
The first light shielding layer 372 covers the peripheral surface of the first lens 341, the peripheral surface of the second lens 342, the peripheral surface of the third lens 343, the peripheral surface of the fourth lens 344, the edge region of the light exit surface of the fourth lens 344, the outer peripheral surface of the first spacer 351, and the outer peripheral surface of the second spacer 352. In other embodiments, the first light shielding layer 372 may cover only at least one of the non-effective diameter portion of the first lens 341, the non-effective diameter portion of the second lens 342, the non-effective diameter portion of the third lens 343, the non-effective diameter portion of the fourth lens 344, the outer circumferential surface of the first spacer 351, and the outer circumferential surface of the second spacer 352.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating a structure of a lens 330 of the camera module 300 in the electronic device 1000 shown in fig. 1 according to a fourth embodiment.
The lens 330 of the image capturing module 300 according to the present embodiment is different from the lens 330 of the image capturing module 300 according to the third embodiment in that three lenses 340 are provided and four connecting layers 360 are provided. The three lenses 340 are a first lens 341, a second lens 342, and a third lens 343, respectively, and the first lens 341, the second lens 342, and the third lens 343 are sequentially arranged from the object side to the image side. Wherein the peripheral surface of the first lens 341, the peripheral surface of the second lens 342, and the peripheral surface of the third lens 343 are flush. It should be noted that the structures of the first lens 341, the second lens 342, and the third lens 343 may be respectively described with reference to the first lens 341, the second lens 342, and the third lens 343 in the image capturing module 300 according to the first embodiment, which are not described herein.
The first spacer 351 is located between the first lens 341 and the second lens 342, and the second spacer 352 is located between the second lens 342 and the third lens 343. The four connection layers 360 are four first connection layers 361. A first connecting layer 361 is located between the first lens 341 and the first spacer 351 and is connected between the first lens 341 and the first spacer 351. A first connecting layer 361 is positioned between the first spacer 351 and the second lens 342 and is connected between the first spacer 351 and the second lens 342. A first connecting layer 361 is positioned between second lens 342 and second spacer 352 and is connected between second lens 342 and second spacer 352. A first connecting layer 361 is connected between the second spacer 352 and the third lens 343. The structure of the four first connection layers 361 may refer to the related descriptions of the four first connection layers 361 in the third embodiment, and are not repeated here.
The first light shielding layer 372 covers the peripheral surface of the first lens 341, the peripheral surface of the second lens 342, the peripheral surface of the third lens 343, the edge region of the light exit surface of the third lens 343, the outer peripheral surface of the first spacer 351, and the outer peripheral surface of the second spacer 352. In other embodiments, the first light shielding layer 372 may cover at least one of the non-effective diameter portion of the first lens 341, the non-effective diameter portion of the second lens 342, the non-effective diameter portion of the third lens 343, the outer circumferential surface of the first spacer 351, and the outer circumferential surface of the second spacer 352.
Referring to fig. 6, fig. 6 is a schematic diagram illustrating a structure of a lens 330 of the camera module 300 in the electronic device 1000 shown in fig. 1 according to a fifth embodiment.
The lens 330 of the image capturing module 300 according to the present embodiment is different from the lens 330 of the image capturing module 300 according to the first embodiment in that the lens 330 further includes a lens barrel 331, and the lens barrel 331 is located at a side of the third lens 343 facing away from the second lens 342 and is mounted on an edge region of a light emitting surface (not shown) of the third lens 343. Wherein, the inner circumference of the lens barrel 331 is located inside the circumference of the third lens 343, and the outer circumference of the lens barrel 331 is flush with the circumference of the third lens 343. For example, the lens barrel 331 may be made of plastic material or metal material.
It can be appreciated that the lens barrel 331 can completely reuse the height space of the third lens 343 to reduce the space occupation of the lens barrel 331 in the height direction of the lens 330, which is helpful for reducing the size of the lens 330, reducing the height of the image capturing module 300, and increasing the aperture.
In other embodiments, the outer peripheral surface of the lens barrel 331 may not be flush with the peripheral surface of the third lens 343, and the outer peripheral surface of the lens barrel 331 is located outside the peripheral surface of the third lens 343, or the outer peripheral surface of the lens barrel 331 is located inside the third lens 343. It should be noted that, references to "external" and "internal" in describing the lens 330 herein are all described with reference to the optical axis of the lens 330, and are each to be taken as "internal" on a side close to the optical axis of the lens 330, and "external" on a side far from the optical axis of the lens 330, and do not indicate or imply that the device or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The lens 340 has four layers and the connection layer 360 has five layers. The four lenses 340 are a first lens 341, a second lens 342, a third lens 343, and a fourth lens 344, respectively. The first lens element 341, the second lens element 342, the third lens element 343 and the fourth lens element 344 are disposed in order from the object side to the image side. The fourth lens 344 is mounted on the inner side of the lens barrel 331 and spaced apart from the fourth lens 344. The peripheral surface of the fourth lens 344 is located inside the peripheral surface of the third lens 343. It should be noted that the structures of the first lens 341, the second lens 342, and the third lens 343 may be described with reference to the first lens 341, the second lens 342, and the third lens 343 in the image capturing module 300 according to the first embodiment, which are not described herein. It should be understood that in other embodiments, more than two lenses 340 may be mounted on the inner side of the barrel 331, which is not particularly limited in this application.
The five connection layers 360 are respectively two first connection layers 361, one second connection layer 362, one third connection layer 363, and one fourth connection layer 364. A first connecting layer 361 is positioned between second lens 342 and spacer 350 and is connected between second lens 342 and spacer 350. Another first connection layer 361 is located between the spacer 350 and the third lens 343, and is connected between the spacer 350 and the third lens 343. The second connection layer 362 is located between the first lens 341 and the second lens 342, and is connected between the first lens 341 and the second lens 342. The structures of the two first connection layers 361 and the one second connection layer 362 may refer to the related descriptions of the two first connection layers 361 and the one second connection layer 362 in the image capturing module 300 according to the first embodiment, and are not repeated herein.
The third connection layer 363 is located between the third lens 343 and the barrel 331, and is connected between the third lens 343 and the barrel 331, and the fourth connection layer 364 is connected between the barrel 331 and the fourth lens 344. Specifically, the third connection layer 363 is connected between the light exit surface of the third lens 343 and the end surface of the lens barrel 331 facing the third lens 343, and the fourth connection layer 364 is connected between the inner surface of the lens barrel 331 and the peripheral surface of the fourth lens 344. The third connection layer 363 and the fourth connection layer 364 may be adhesive layers, such as a transparent adhesive layer or a non-transparent adhesive layer, for example. It should be noted that, compared to the mutual assembly between the two lenses 340, the assembly between the lenses 340 and the lens barrel 331 is realized by using the connection layer 360, so that the stress influence caused by the mutual assembly between the two lenses 340 can be reduced, and the performance loss caused by the deformation of the lenses 340 due to the assembly can be reduced.
Further, the first light shielding layer 372 covers the peripheral surface of the first lens 341, the peripheral surface of the second lens 342, the peripheral surface of the third lens 343, and the outer peripheral surface of the spacer 350. In other embodiments, the first light shielding layer 372 may also cover the outer surface of the lens barrel 331, or the first light shielding layer 372 may cover at least one of the non-effective diameter portion of the first lens 341, the non-effective diameter portion of the second lens 342, the non-effective diameter portion of the third lens 343, the outer circumferential surface of the spacer 350, and the outer circumferential surface of the lens barrel 331.
It is to be understood that, in the image capturing module 300 (as shown in fig. 2) according to the present embodiment, the connection portion 380 may not be connected between the spacer 350 and the lens base 320, or between the lens 340 and the lens base 320, but between the lens barrel 331 and the lens base 320, for example, the connection portion 380 may be connected between the outer surface of the lens barrel 331 and the inner surface of the lens base 320, and assembly between the lens 330 and the lens base 320 may be achieved, or there may be a plurality of connection portions 380, and at least one connection portion 380 may be connected between the lens barrel 331 and the lens base 320.
Referring to fig. 7, fig. 7 is a schematic diagram illustrating a structure of a lens 330 of the camera module 300 in the electronic device 1000 shown in fig. 1 according to a sixth embodiment.
The lens 330 of the image capturing module 300 according to the present embodiment is different from the lens 330 of the image capturing module 300 according to the fifth embodiment in that the lens barrel 331 is located at a side of the second lens 342 facing away from the first lens 341, and is mounted on an edge region of a light emitting surface (not shown) of the second lens 342. Wherein the outer peripheral surface of the lens barrel 331 is flush with the peripheral surface of the second lens 342.
There are three lenses 340 and three connection layers 360. The three lenses 340 are a first lens 341, a second lens 342, and a third lens 343, respectively, and the first lens 341, the second lens 342, and the third lens 343 are sequentially arranged from the object side to the image side. The third lens 343 is mounted on the inner side of the lens barrel 331 and is spaced apart from the second lens 342. Wherein the peripheral surface of the third lens 343 is located inside the peripheral surface of the second lens 342. It should be noted that, the structures of the first lens 341 and the second lens 342 may be described with reference to the first lens 341 and the second lens 342 in the image capturing module 300 according to the fifth embodiment, and the description of the third lens 343 may be described with reference to the third lens 343 in the image capturing module 300 according to the fifth embodiment, which is not described herein.
The connection layer 360 has three layers, the three connection layers 360 are a second connection layer 362, a third connection layer 363 and a fourth connection layer 364, respectively, the second connection layer 362 is located between the first lens 341 and the second lens 342 and connected between the first lens 341 and the second lens 342, the third connection layer 363 is located between the second lens 342 and the lens barrel 331 and connected between the second lens 342 and the lens barrel 331, and the fourth connection layer 364 is located between the lens barrel 331 and the third lens 343 and connected between the lens barrel 331 and the third lens 343. The structure of the second connection layer 362 may refer to the related description of the second connection layer 362 in the image capturing module 300 according to the fifth embodiment, and the structures of the third connection layer 363 and the fourth connection layer 364 may refer to the related description of the third connection layer 363 and the fourth connection layer 364 in the fifth embodiment, which are not described herein again.
Further, the first light shielding layer 372 covers the peripheral surface of the first lens 341 and the peripheral surface of the second lens 342. In other embodiments, the first light shielding layer 372 may also cover the outer circumferential surface of the lens barrel 331, or the first light shielding layer 372 may cover at least one of the non-effective diameter portion of the first lens 341, the non-effective diameter portion of the second lens 342, and the outer circumferential surface of the lens barrel 331.
Referring to fig. 8, fig. 8 is a schematic diagram illustrating a structure of a lens 330 of the camera module 300 in the electronic device 1000 shown in fig. 1 according to a seventh embodiment.
The lens 330 of the image capturing module 300 according to the present embodiment is different from the image capturing module 300 according to the sixth embodiment in that the lens barrel 331 is located on the image side of the first lens 341 and is mounted on an edge region of a light exit surface (not shown) of the first lens 341. Wherein the outer surface of the lens barrel 331 is flush with the circumferential surface of the first lens 341.
There are two lenses 340 and two connecting layers 360. The two lenses 340 are a first lens element 341 and a second lens element 342, respectively, and the first lens element 341 and the second lens element 342 are sequentially arranged from the object side to the image side. The second lens 342 is located inside the lens barrel 331 and is spaced apart from the first lens 341. Wherein the peripheral surface of the second lens 342 is located inside the peripheral surface of the first lens 341. It should be noted that, the structures of the first lens 341 and the second lens 342 may refer to the related descriptions of the first lens 341 and the fourth lens 344 in the image capturing module 300 according to the sixth embodiment, which are not described herein.
The two connection layers 360 are a third connection layer 363 and a fourth connection layer 364, respectively. A third connection layer 363 is disposed between the first lens 341 and the barrel 331 and connected between the first lens 341 and the barrel 331, and a fourth connection layer 364 is disposed between the second lens 342 and the barrel 331 and connected between the second lens 342 and the barrel 331. The structures of the third connection layer 363 and the fourth connection layer 364 can be referred to the related descriptions of the second connection layer 362 and the third connection layer 363 in the image capturing module 300 according to the sixth embodiment, and are not repeated here.
Further, the first light shielding layer 372 covers the peripheral surface of the first lens 341. In other embodiments, the first light shielding layer 372 may also cover the outer circumferential surface of the lens barrel 331, or the first light shielding layer 372 may cover at least one of the non-effective diameter portion of the first lens 341 and the outer circumferential surface of the lens barrel 331.
Referring to fig. 9 and 10, fig. 9 is a schematic partial structure of the camera module 300 in the electronic device 1000 shown in fig. 1 in the eighth embodiment, and fig. 10 is a schematic structure of the lens 330 in the camera module 300 shown in fig. 9 at an angle.
The image capturing module 300 according to the present embodiment is different from the image capturing module 300 according to the first embodiment in that the number of lenses 340 is four and the number of connection layers 360 is four. The four lenses 340 are a first lens element 341, a second lens element 342, a third lens element 343 and a fourth lens element 344, respectively, and the first lens element 341, the second lens element 342, the third lens element 343 and the fourth lens element 344 are sequentially arranged from the object side to the image side. Wherein the peripheral surface of the first lens 341 and the peripheral surface of the second lens 342 are flush. It should be noted that, the structures of the first lens 341 and the second lens 342 may refer to the related descriptions of the first lens 341 and the second lens 342 in the image capturing module 300 according to the first embodiment, which are not described herein.
The third lens 343 has a peripheral surface partially flush with the peripheral surface of the second lens 342 and partially inside the peripheral surface of the second lens 342. Specifically, the peripheral surface of the third lens 343 includes two first peripheral surface portions 3431 and two second peripheral surface portions 3432. The two first peripheral surface portions 3431 are disposed opposite to each other and are both located inside the peripheral surface of the second lens 342. The two second peripheral surface portions 3432 are disposed opposite to each other, are connected between the two first peripheral surface portions 3431, and are flush with the peripheral surface of the second lens 342. One first peripheral surface portion 3431, one second peripheral surface portion 3432, another first peripheral surface portion 3431, and another second peripheral surface portion 3432 are connected end to end in this order, and are disposed around the third lens 343. Illustratively, the first peripheral surface portion 3431 is planar and the second peripheral surface portion 3432 is arcuate.
It should be noted that, in other embodiments, the peripheral surface of the third lens 343 may include one or more than three first peripheral surface portions 3431, and/or the peripheral surface of the third lens 343 may include one or more than three second peripheral surface portions 3432, which is not particularly limited herein.
The peripheral surface of the fourth lens 344 is flush with the peripheral surface of the third lens 343. The peripheral surface of the fourth lens 344 is partially flush with the peripheral surface of the second lens 342, and partially inside the peripheral surface of the second lens 342. Specifically, the peripheral surface of the fourth lens 344 includes two fifth peripheral surface portions 3441 and two sixth peripheral surface portions 3442. The two fifth peripheral surface portions 3441 are disposed opposite to each other, flush with the two first peripheral surface portions 3431, and are located inside the peripheral surface of the second lens 342. The two sixth peripheral surface portions 3442 are disposed opposite to each other and connected between the two fifth peripheral surface portions 3441, and are flush with the two second peripheral surface portions 3432, respectively, and with the peripheral surface of the second lens 342. One fifth peripheral surface portion 3441, one sixth peripheral surface portion 3442, another fifth peripheral surface portion 3441, and another sixth peripheral surface portion 3442 are connected end to end in this order, and are disposed around the fourth lens 344. Illustratively, the fifth peripheral surface portion 3441 is planar and the sixth peripheral surface portion 3442 is arcuate.
Spacer 350 is positioned between second lens 342 and third lens 343. The spacer 350 is located between the light-emitting surface (not shown) of the second lens element 342 and the light-entering surface (not shown) of the third lens element 343. In this embodiment, the outer peripheral surface of the spacer 350 is flush with the peripheral surface of the third lens 343. The outer peripheral surface of the spacer 350 is partially flush with the peripheral surface of the second lens 342, and partially inside the peripheral surface of the second lens 342. Specifically, the outer peripheral surface of the spacer 350 includes two third peripheral surface portions 3501 and two fourth peripheral surface portions 3502. The two third peripheral surface portions 3501 are disposed opposite to each other, and are located inside the peripheral surface of the second lens 342, respectively, with the two first peripheral surface portions 3431 and each. The two fourth peripheral surface portions 3502 are disposed opposite to each other and connected between the two third peripheral surface portions 3501, and are respectively flush with the two second peripheral surface portions 3432 and the peripheral surface of the second lens 342. One third peripheral surface portion 3501, one fourth peripheral surface portion 3502, another third peripheral surface portion 3501, and another fourth peripheral surface portion 3502 are connected end to end in this order, and are disposed around the spacer 350. Illustratively, the third peripheral surface portion 3501 is planar and the fourth peripheral surface portion 3502 is arcuate.
It should be noted that, in other embodiments, the outer peripheral surface of the spacer ring 350 may include one or more third peripheral surface portions 3501, and/or the outer peripheral surface of the spacer ring 350 may include one or more fourth peripheral surface portions 3502, which is not particularly limited in this application. It should be appreciated that the lens and spacer may be trimmed using a lens trimming (cut) process to yield the third lens 343, fourth lens 344 and spacer 350.
The four connection layers 360 are two first connection layers 361 and two second connection layers 362, respectively. A first connecting layer 361 is positioned between second lens 342 and spacer 350 and is connected between second lens 342 and spacer 350. Another first connection layer 361 is located between the spacer 350 and the third lens 343, and is connected between the spacer 350 and the third lens 343. A second connection layer 362 is located between the first lens 341 and the second lens 342, and is connected between the first lens 341 and the second lens 342. The other first connection layer 361 is located between the third lens 343 and the fourth lens 344, and is connected between the third lens 343 and the fourth lens 344. The other first connecting layer 361 is connected between the light emitting surface (not shown) of the third lens 343 and the light entering surface (not shown) of the fourth lens 344. For example, the other first connecting layer 361 may be an adhesive layer, for example, the other first connecting layer 361 may be a transparent adhesive layer, so as to reduce interference of the other first connecting layer 361 on light, where the third lens 343, the fourth lens 344 and the other first connecting layer 361 may form a double-cemented lens structure, or the third connecting layer 363 is an opaque adhesive layer, and the other first connecting layer 361 connects an edge region of a light emitting surface of the third lens 343 and an edge region of a light entering surface of the fourth lens 344, so as to avoid the third connecting layer 363 from affecting propagation of light inside the third lens 343 and the fourth lens 344. The structures of the two first connection layers 361 and the one second connection layer 362 may refer to the related descriptions of the two first connection layers 361 and the one second connection layer 362 in the image capturing module 300 according to the first embodiment, which are not described herein.
In the image capturing module 300 according to the present embodiment, the third lens 343, the fourth lens 344 and the spacer 350 can be trimmed, and the connecting portion 380 and/or the lens base 320 can multiplex the dimension space of the lens 330 in the height direction, which is helpful for further reducing the height of the image capturing module 300, and thus the miniaturized design of the image capturing module 300 can be realized.
Referring to fig. 11 to 14, fig. 11 is a schematic structural view of a lens 330 of the camera module 300 in the electronic device 1000 shown in fig. 1 in the ninth embodiment, fig. 12 is a schematic structural view of the lens 330 shown in fig. 11 in a first angle, fig. 13 is a schematic structural view of the lens 330 shown in fig. 11 in a second angle, and fig. 14 is a schematic structural view of the lens 330 shown in fig. 11 in a third angle.
The lens 330 of the image capturing module 300 according to the present embodiment is different from the lens 330 of the image capturing module 300 according to the eighth embodiment in that three lenses 340 are provided and three connecting layers 360 are provided. The three lenses 340 are a first lens 341, a second lens 342, and a third lens 343, respectively, from the object side to the image side, the first lens 341, the second lens 342, and the third lens 343. It should be noted that, the structure of the first lens 341 may refer to the related description of the first lens 341 in the image capturing module 300 according to the eighth embodiment, which is not described herein.
The peripheral surface of the second lens 342 is partially flush with the peripheral surface of the first lens 341, and partially inside the peripheral surface of the first lens 341. The peripheral surface of the third lens 343 is flush with the peripheral surface of the second lens 342. The third lens 343 has a peripheral surface partially flush with the peripheral surface of the first lens 341 and partially inside the peripheral surface of the first lens 341. Spacer 350 is positioned between second lens 342 and third lens 343. The outer peripheral surface of the spacer 350 is flush with the peripheral surface of the second lens 342 and the peripheral surface of the third lens 343. The outer peripheral surface of the spacer 350 is partially flush with the peripheral surface of the first lens 341, and partially inside the peripheral surface of the first lens 341. It should be noted that the structures of the second lens 342, the third lens 343 and the spacer 350 can be referred to the related descriptions of the third lens 343, the fourth lens 344 and the spacer 350 in the eighth embodiment, and are not repeated herein.
The three connection layers 360 are two first connection layers 361 and one second connection layer 362, respectively. A second connection layer 362 is located between the first lens 341 and the second lens 342, and is connected between the first lens 341 and the second lens 342. A first connecting layer 361 is positioned between second lens 342 and spacer 350 and is connected between second lens 342 and spacer 350. Another first connection layer 361 is located between the spacer 350 and the third lens 343, and is connected between the spacer 350 and the third lens 343. The structures of the two first connection layers 361 and the one second connection layer 362 may refer to the related descriptions of the two first connection layers 361 and the one second connection layer 362 in the image capturing module 300 according to the first embodiment, which are not described herein.
In the image capturing module 300 according to the present embodiment, the second lens 342, the third lens 343 and the spacer 350 can be trimmed, and the connecting portion 380 and/or the lens base 320 (as shown in fig. 9) can reuse the dimension space of the lens 330 in the height direction, which is helpful for further reducing the height of the image capturing module 300, and thus the miniaturization design of the image capturing module 300 can be realized.
Next, the performance of the camera module 300 shown in the present application will be described in detail by taking the camera module 300 using three different structures of lenses 330 as an example. The lens 330 of the image capturing module 300 of the first embodiment adopts a lens combination structure of 2G2P, and the lens 330 of the image capturing module 300 of the second embodiment adopts a lens combination structure of 3G 1P.
Referring to fig. 15, fig. 15 is a schematic structural diagram of an image capturing module 300 according to the first embodiment.
The image capturing module 300 according to the first embodiment includes a lens 330, a diaphragm 390, and an optical filter 310, where the lens 330 includes three lenses 340, the three lenses 340 are a first lens 341, a second lens 342, and a third lens 343, and the first lens 341, the second lens 342, and the third lens 343 are sequentially arranged in a direction from an object side to an image side. Among them, the lens 330 adopts a lens combination structure of 2G1P, that is, two lenses 340 are made of glass and one lens 340 is made of plastic. The diaphragm 390 is located on the object side of the first lens 341. The optical filter 310 is located at a side of the third lens 343 facing away from the second lens 342 and is spaced apart from the second lens 342. Illustratively, the filter 310 may be an infrared cut filter.
The effective focal length of the camera module 300 is 14.45mm, the focal number is 2.88, the angle of view is 19.2 degrees, and the total lens length is 13.6mm. For convenience of description, in the present embodiment, S1 represents the light incident surface of the first lens 341, S2 represents the light incident surface of the second lens 342, S3 represents the light emergent surface of the second lens 342, S4 represents the light incident surface of the third lens 343, S5 represents the light emergent surface of the third lens 343, S6 represents the light incident surface of the optical filter 310, S7 represents the light emergent surface of the optical filter 310, and S8 represents the image plane.
It should be noted that in the embodiment of the present application, all the aspheric surface types may be defined by, but not limited to, an aspheric formula. Wherein, the aspheric formula:z is the sagittal height of the aspheric surface, r is the radial coordinate of the aspheric surface, c is the spherical curvature of the aspheric apex, K is the conic constant, A i And N is the number of the aspherical coefficients, i and N are positive integers, and i is smaller than or equal to N. Exemplary, N is 6, < >>
In the image capturing module 300 according to the first embodiment, table 1 shows the surface types, the radius of curvature, the thickness, the refractive index, the abbe number, and the cone coefficients of the surfaces S1 to S8, and table 2 shows the first embodimentIn the image capturing module 330, the aspherical coefficients of the surfaces S1 to S8. In the table, "INF" means infinity (infinity), and "E-i" means an exponential expression based on 10, that is, "10 -i ", e.g.," -1.98E-01 "means" -1.98X10 " -1 ”。
TABLE 1
TABLE 2
Face number A2 A4 A6 A8 A10 A12 A14 A16
S1 \ \ \ \ \ \ \ \
S2 \ \ \ \ \ \ \ \
S3 \ 5.52E-03 -5.66E-03 6.86E-03 -4.80E-03 1.92E-03 -4.13E-04 3.65E-05
S4 \ 1.32E-01 -6.66E-01 1.38E+00 -6.34E-01 -1.73E+00 1.47E+00 1.99E+00
S5 \ -6.83E-01 5.42E-01 6.35E-01 -6.63E-01 -5.85E+00 7.88E+00 2.17E+01
S6 \ \ \ \ \ \ \ \
S7 \ \ \ \ \ \ \ \
S8 \ \ \ \ \ \ \ \
Referring to fig. 16a, 16b and 16c, fig. 16a is a spherical aberration diagram of the camera module 300 shown in fig. 15, fig. 16b is an astigmatic field diagram of the camera module 300 shown in fig. 15, and fig. 16c is a distortion diagram of the camera module 300 shown in fig. 15.
The spherical aberration diagram includes spherical aberration curves corresponding to different wavelength bands (including 0.435mm, 0.486mm, 0.546mm, 0.587mm, and 0.656mm in the drawings), and the physical meaning is that light of a corresponding wavelength emitted in a 0-degree field of view passes through the optical system and deviates from an ideal image point. The abscissa of the spherical aberration plot represents the focus offset and the ordinate represents the normalized field of view. The focus offset of the different fields of view of the spherical aberration chart shown in fig. 16a is smaller, which indicates that the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the camera module 300 shown in the first embodiment is better corrected, the spherical aberration is smaller, and the imaging quality is better. In other words, the image capturing module 300 according to the first embodiment can correct various phase differences from the time of capturing an object, and has good imaging characteristics. The astigmatic field curvature graph is used for illustrating the deviation of the convergence points of the beamlets of different fields from an ideal imaging plane, X is a sagittal beam, Y is a meridional beam, the abscissa is a deviation value along the optical axis direction, and the ordinate is a corresponding field of view. When a certain field value is too large, the field image quality is poor or advanced aberration exists. The curvature of field in both directions shown in fig. 16b is smaller, and the system has a better depth of focus. The distortion map is used to characterize the relative deviation of the beam convergence point (actual image height) from the ideal image height for different fields of view. The distortion map shown in fig. 16c ensures that the picture is not significantly distorted.
Referring to fig. 17, fig. 17 is a schematic structural diagram of an image capturing module 300 according to the second embodiment.
The image capturing module 300 according to the second embodiment includes a lens assembly 330 and an optical filter 310, the lens assembly 330 includes four lenses 340, and the three lenses 340 are a first lens element 341, a second lens element 342, a third lens element 343 and a fourth lens element 344, which are sequentially arranged from an object side to an image side. Among them, the lens 330 adopts a 2G2P lens combination structure, that is, two lenses 340 are made of glass and two lenses 340 are made of plastic. The filter 310 is located at a side of the fourth lens 344 away from the third lens 343 and is spaced apart from the third lens 343. Illustratively, the filter 310 may be an infrared cut filter.
The effective focal length of the camera module 300 is 14.45mm, the focal number is 2.87, the angle of view is 19.3 degrees, and the total lens length is 13.32mm. For convenience of description, in the present embodiment, S1 represents the light incident surface of the first lens 341, S2 represents the light incident surface of the second lens 342, S3 represents the light emergent surface of the second lens 342, S4 represents the light incident surface of the third lens 343, S5 represents the light emergent surface of the third lens 343, S6 represents the light incident surface of the fourth lens 344, S7 represents the light emergent surface of the fourth lens 344, S8 represents the light incident surface of the optical filter 310, S9 represents the light emergent surface of the optical filter 310, and S10 represents the image plane. By way of example, N is 8,
In the image capturing module 300 according to the second embodiment, table 3 shows the surface types, the radius of curvature, the thickness, the refractive index, the abbe number and the cone coefficients of the surfaces S1 to S8, and table 4 shows the aspherical coefficients of the surfaces S1 to S8 of the image capturing module 330 according to the second embodiment.
TABLE 3 Table 3
TABLE 4 Table 4
Face number A2 A4 A6 A8 A10 A12 A14 A16
S1 \ \ \ \ \ \ \ \
S2 \ \ \ \ \ \ \ \
S3 \ \ \ \ \ \ \ \
S4 \ -2.74E-03 -1.81E-03 5.60E-04 -1.26E-03 4.40E-04 -3.54E-05 -3.48E-06
S5 \ -2.98E-03 -3.17E-03 -2.13E-03 3.03E-03 -3.26E-03 1.51E-03 -2.57E-04
S6 \ -3.21E-01 1.46E+00 -1.13E+01 4.84E+01 -1.11E+02 5.63E+01 3.16E+02
S7 \ -1.79E-01 6.23E-01 -2.54E+00 5.63E+00 -6.04E+00 1.26E-01 5.12E+00
S8 \ \ \ \ \ \ \ \
Referring to fig. 18a, 18b and 18c, fig. 18a is a spherical aberration diagram of the camera module 300 shown in fig. 17, fig. 18b is an astigmatic field diagram of the camera module 300 shown in fig. 17, and fig. 18c is a distortion diagram of the camera module 300 shown in fig. 17.
The focus offset of the different fields of view of the spherical aberration chart shown in fig. 18a is smaller, which indicates that the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the camera module 300 shown in the second embodiment is better corrected, the spherical aberration is smaller, and the imaging quality is better. In other words, the image capturing module 300 according to the second embodiment can correct various phase differences from the time of capturing an object, and has good imaging characteristics. The curvature of field in both directions shown in fig. 18b is smaller, and the system has a better depth of focus. The distortion map shown in fig. 18c ensures that the picture is not significantly distorted.
Referring to fig. 19, fig. 19 is a schematic structural diagram of an image capturing module 300 according to the third embodiment.
The image capturing module 300 according to the third embodiment includes a lens assembly 330 and an optical filter 310, the lens assembly 330 includes four lenses 340, and the three lenses 340 are a first lens element 341, a second lens element 342, a third lens element 343 and a fourth lens element 344, which are sequentially arranged from an object side to an image side. Among them, the lens 330 adopts a 3G1P lens combination structure, that is, three lenses 340 are made of glass and one lens 340 is made of plastic. The filter 310 is located at a side of the fourth lens 344 away from the third lens 343 and is spaced apart from the third lens 343. Illustratively, the filter 310 may be an infrared cut filter.
The effective focal length of the camera module 300 is 11.73mm, the focal number is 2.88, the angle of view is 21.2 degrees, and the total lens length is 13.6mm. For convenience of description, in the present embodiment, S1 represents the light incident surface of the first lens 341, S2 represents the light incident surface of the second lens 342, S3 represents the light incident surface of the third lens 343, S4 represents the light emergent surface of the third lens 343, S5 represents the light incident surface of the fourth lens 344, S6 represents the light emergent surface of the fourth lens 344, S7 represents the light incident surface of the optical filter 310, S8 represents the light emergent surface of the optical filter 310, and S9 represents the image plane. By way of example, N is 8,
in the image capturing module 300 according to the third embodiment, table 5 shows the surface types, the radius of curvature, the thickness, the refractive index, the abbe number and the cone coefficients of the surfaces S1 to S8, and table 6 shows the aspherical coefficients of the surfaces S1 to S8 of the image capturing module 330 according to the third embodiment.
TABLE 5
TABLE 6
Face number A2 A4 A6 A8 A10 A12 A14 A16
S1 \ \ \ \ \ \ \ \
S2 \ \ \ \ \ \ \ \
S3 \ 5.52E-03 -5.66E-03 6.86E-03 -4.80E-03 1.92E-03 -4.13E-04 3.65E-05
S4 \ 1.32E-01 -6.66E-01 1.38E+00 -6.34E-01 -1.73E+00 1.47E+00 1.99E+00
S5 \ -6.83E-01 5.42E-01 6.35E-01 -6.63E-01 -5.85E+00 7.88E+00 2.17E+01
S6 \ \ \ \ \ \ \ \
S7 \ \ \ \ \ \ \ \
S8 \ \ \ \ \ \ \ \
Referring to fig. 20a, 20b and 20c, fig. 20a is a spherical aberration diagram of the camera module 300 shown in fig. 19, fig. 20b is an astigmatic field diagram of the camera module 300 shown in fig. 19, and fig. 20c is a distortion diagram of the camera module 300 shown in fig. 19.
The focus offset of the spherical aberration graphs shown in fig. 20a is smaller in different fields of view, which indicates that the on-axis aberration (spherical aberration, chromatic aberration, etc.) of the camera module 300 shown in the third embodiment is better corrected, the spherical aberration is smaller, and the imaging quality is better. In other words, the image capturing module 300 according to the third embodiment can correct various phase differences from the time of capturing an object, and has good imaging characteristics. The curvature of field in both directions shown in fig. 20b is smaller, and the system has a better depth of focus. The distortion map shown in fig. 20c can ensure that the picture is not significantly distorted.
In the image capturing module 300 according to the present embodiment, the lens 330 may not include a lens barrel, at least one lens 340 is exposed, and the adjacent two lenses 340 are assembled through the connecting layer 360 or the spacer 350, so that the space occupied by the lens barrel can be omitted due to the fact that the lens 330 does not include a lens barrel, which is helpful for reducing the size of the lens 330, reducing the height of the image capturing module 300, and increasing the aperture. In other words, the camera module 300 according to the present embodiment can effectively reduce the size of the camera module 300 while having a large aperture by using the lens 330.
It is understood that the aperture size of the camera module 300 is proportional to the head size of the camera module 300. When the camera module 300 is a periscope camera module, the height of the camera module 300 can be reduced by adopting the lens 330, and when the camera module 300 is a vertical rear camera module or a front camera module, the head size of the camera module 300 can be reduced by adopting the lens 330.
The foregoing description is only a partial example and implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art who is familiar with the technical scope of the present application can easily think about changes or substitutions, and should be covered in the protection scope of the present application; embodiments of the present application and features of embodiments may be combined with each other without conflict. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (16)

1. The lens is characterized by comprising a plurality of lenses, wherein the lenses are sequentially arranged in the direction from an object side to an image side, and at least one lens is in an exposed state.
2. The lens barrel according to claim 1, wherein the peripheral surfaces of the plurality of lenses are all flush, or the peripheral surface of one of the lenses includes at least one first peripheral surface portion and at least one second peripheral surface portion, each of the first peripheral surface portions being located inside the peripheral surface of the other of the lenses, each of the second peripheral surface portions being flush with the peripheral surface of one of the lenses.
3. The lens according to claim 1 or 2, further comprising at least one spacer and at least two first connection layers, each spacer being located between two adjacent lenses, each first connection layer being connected between one of the lenses and one of the spacers.
4. A lens according to claim 3, wherein the outer peripheral surface of the spacer is flush with the peripheral surface of one of the lenses, or the outer peripheral surface of the spacer includes at least one third peripheral surface portion and at least one fourth peripheral surface portion, each of the third peripheral surface portions being located inside the peripheral surface of one of the lenses, each of the fourth peripheral surface portions being flush with the peripheral surface of one of the lenses.
5. The lens of claim 4, wherein the spacer is provided with a light blocking structure, and the light blocking structure is disposed on an inner peripheral surface of the spacer and between two adjacent lenses.
6. A lens according to any one of claims 3 to 5, wherein the spacer is made of plastic or metal.
7. The lens of claim 1, further comprising at least one second connection layer, each second connection layer being connected between two adjacent lenses.
8. The lens according to any one of claims 1 to 7, further comprising a barrel mounted on one side of at least one of the lenses, at least one of the lenses being mounted on an inner side of the barrel.
9. The lens barrel according to claim 8, wherein an inner peripheral surface of the lens barrel is located inside a peripheral surface of one of the lenses.
10. The lens barrel according to any one of claims 1 to 9, further comprising a first light shielding layer covering a non-effective diameter portion of at least one of the lenses.
11. An image pickup module comprising a lens base and the lens according to any one of claims 1 to 10, the lens being mounted on an inner side of the lens base.
12. The camera module of claim 11, wherein the plurality of lenses includes a first lens closest to the object side, and the lens further includes a second light shielding layer disposed at an edge region of the light entrance surface of the first lens.
13. The image capturing module of claim 11 or 12, wherein the plurality of lenses includes a first lens closest to the object side, and further comprising a diaphragm disposed on the lens base and opposite to an edge region of the light entrance surface of the first lens.
14. The camera module of any one of claims 11 to 13, further comprising a connection portion fixedly connected between the lens base and the lens.
15. The camera module of claim 14, wherein the connection portion includes a first sub-connection portion and a second sub-connection portion, the first sub-connection portion being disposed on an outer peripheral surface of the lens, the second sub-connection portion being disposed on an inner peripheral surface of the lens base.
16. An electronic device comprising an image processor and a camera module according to any one of claims 11 to 15, the camera module being electrically connected to the image processor.
CN202311059197.1A 2023-08-21 2023-08-21 Lens, camera module and electronic equipment Pending CN117687170A (en)

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