CN107544108A - Filter element and camera module and its manufacture method and application - Google Patents

Filter element and camera module and its manufacture method and application Download PDF

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Publication number
CN107544108A
CN107544108A CN201610487336.4A CN201610487336A CN107544108A CN 107544108 A CN107544108 A CN 107544108A CN 201610487336 A CN201610487336 A CN 201610487336A CN 107544108 A CN107544108 A CN 107544108A
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China
Prior art keywords
filter element
camera module
plane body
curved plane
light
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CN201610487336.4A
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CN107544108B (en
Inventor
王江平
范秋林
毛狄青
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Ningbo Sunny Opotech Co Ltd
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Ningbo Sunny Opotech Co Ltd
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Abstract

Filter element and camera module and its manufacture method and application, wherein the filter element is used for a camera module, it includes a curved plane body, and the curved plane body has refraction and filtration to light, to replace an eyeglass of a camera lens of the camera module.

Description

Filter element and camera module and its manufacture method and application
Technical field
The present invention relates to camera module field, further, be related to a filter element, camera lens and camera module and Its manufacture method and application.
Background technology
With the development of various smart machines, the application of camera module is more and more extensive, and images in turn The function and structure of module also contributes to smart machine.
Multi-functional, lightening is one of current Main Trends of The Development of numerous smart machines, but in camera module In the case that function is continued to optimize, but there is a bottleneck sex chromosome mosaicism:Traditional camera module structure is not Frivolous requirement can be met.Therefore, realized into limitation smart machine one of the thickness of camera module, volume Key factor, such as the thickness of mobile phone are heavily dependent on the thickness of camera module.
Traditional camera module generally includes a wiring board, a sensitive chip, a base, an optical filter and a mirror Head.The sensitive chip is attached on the wiring board, and connected by gold thread, realizes light therebetween Electric signal transmission.The optical filter is installed in the photosensitive path of the sensitive chip by the base.Camera lens The base is installed on directly or through a motor, to cause the camera lens to be located at the sense of the sensitive chip Light path.
It is obvious that the thickness of camera module depends on the quantity of element, the volume of each element and mutual The factors such as annexation.From the above it can be seen that, wiring board, the height of base and camera lens these parts Sum is the minimum thickness of camera module.
In camera module, camera lens and optical filter are the necessary parts in optical system.After light enters camera lens, By reaching optical filter after the refraction action of eyeglass, further by the filter action of optical filter, part light is filtered off Line, such as infrared light so that image meets human eye vision effect.Herein, camera lens and optical filter each undertake Different functions, and each occupy certain space.On traditional architecture basics, camera lens and optical filter are full On the basis of sufficient optical imaging effect, almost without the space that can be reduced.
In addition, traditional optical filter mainly has two kinds, one kind is reflection optical filter, and another kind is absorption filter Mating plate.Reflection optical filter, such as cutoff filter, by plating infrared cut coating, profit on white glass surface Infrared light is intercepted with reflection of the light on film, and it is not entered space in camera lens and carries out photoelectric conversion process. The effect of reflection is relevant with the incidence angle of light, when incidence angle increase, such as the light mistake of the light of lens edge Filter effect is deteriorated.And absorption optical filter, such as smalt optical filter, utilize the light absorbs in smalt material Material controls lambda1-wavelength.Although smalt is relative on optical effect to be better than cutoff filter, at that time The smalt processing technology of sheet is more difficult, and processing efficiency is relatively low, hence in so that reality of the smalt in camera module Border utility ratio is relatively low.
The content of the invention
It is an object of the present invention to provide a filter element, camera lens and camera module and its manufacture method and answer With wherein the filter element has the reflective functions of eyeglass, being used as eyeglass.
It is an object of the present invention to provide a filter element, camera lens and camera module and its manufacture method and answer With wherein the filter element has mirror laminated structure, so as to be formed with reflective functions and filtering functions combination Filter element.
It is an object of the present invention to provide a filter element, camera lens and camera module and its manufacture method and answer With wherein the filter element can be applied to camera lens, so as to form the camera lens with filter effect.
It is an object of the present invention to provide a filter element, camera lens and camera module and its manufacture method and answer With, wherein the eyeglass of the alternative camera lens of the alternative camera lens of the filter element, so that optical filter and eyeglass Locus is combined, and reduces the height that optical filter and camera lens are formed, so that so that the longitudinal direction of camera module Highly reduce.
It is an object of the present invention to provide a filter element, camera lens and camera module and its manufacture method and answer With wherein the filter element forms curved-surface structure, so as to imitate lens structure.
It is an object of the present invention to provide a filter element, camera lens and camera module and its manufacture method and answer With, wherein the filter element filters light by way of absorption, so as to have preferable filter effect, by Angle of incidence of light influences smaller.
It is an object of the present invention to provide a filter element, camera lens and camera module and its manufacture method and answer With wherein the filter element has a curved plane body and a film layer, the film layer is attached to the curved plane body Surface, to increase the effect of light function of the curved plane body.
It is an object of the present invention to provide a filter element, camera lens and camera module and its manufacture method and answer With wherein the camera module is by reducing the thickness of camera lens part and reducing photosensory assembly segment thickness two Aspect, which combines, carrys out reduce thickness, in order to form a ultra-thin camera module.
In order to realize the object above and other objects of the present invention and advantage of the present invention, an aspect of of the present present invention A filter element is provided, for a camera module, it includes a curved plane body, has refraction and filtering to light Effect, to replace an eyeglass of a camera lens of the camera module.
According to one embodiment of the invention, described filter element absorbs ground filtering light.
According to one embodiment of the invention, described filter element to infrared Absorption filters.
According to one embodiment of the invention, curved plane body described in described filter element is smalt material.
According to one embodiment of the invention, described filter element includes a film layer, is attached to the curved plane body Outer surface.
According to one embodiment of the invention, film layer described in described filter element is combination:Cut film and anti-reflection One of which in film or two kinds.
According to one embodiment of the invention, cut film described in described filter element is infrared cut coating, described Antireflective coating is visible ray anti-reflection film.
According to one embodiment of the invention, film layer is by spraying, brushing or attach described in described filter element Mode be attached to the curved plane body.
Another aspect of the present invention provides a camera lens, and for a camera module, it includes
At least one filter element;With
One lens barrel, the filter element are installed in the lens barrel.
According to one embodiment of the invention, described camera lens includes an at least eyeglass, and the eyeglass is installed in institute State in lens barrel, above the filter element.
Another aspect of the present invention provides a camera module, and it includes:
An at least camera lens;
An at least photosensory assembly;With
Filter element at least described in one, the filter element and the camera lens are located at the photosensitive of the photosensory assembly Path.
According to one embodiment of the invention, described camera module includes a support, and the support is mounted described Photosensory assembly.
According to one embodiment of the invention, camera lens is installed in the support described in described camera module, with Form one and focus camera module.
According to one embodiment of the invention, support is connected integrally to described photosensitive described in described camera module Component.
According to one embodiment of the invention, described camera module includes a motor, and the motor is installed in institute Support is stated, the camera lens is installed in the motor, and burnt camera module is moved in order to form one.
According to one embodiment of the invention, photosensory assembly described in described camera module include a photo-sensitive cell and One circuit panel element, the circuit panel element are overlapped in photo-sensitive cell.
According to one embodiment of the invention, photo-sensitive cell described in described camera module includes a photographic department and one Non-photo-sensing portion, the non-photo-sensing portion and the circuit panel element respectively include an at least conductive unit, the non-photo-sensing Portion and the circuit panel element are electrically connected to each other by the corresponding conductive unit, so that the wiring board Element is overlapped in the non-photo-sensing portion of the photo-sensitive cell electrically.
According to one embodiment of the invention, line panel element described in described camera module includes a connector, electricity The circuit panel element is connected to, when being applied to an electronic equipment in order to the photosensory assembly, is electrically connected In the electronic equipment.
According to one embodiment of the invention, photosensory assembly described in described camera module includes a functional layer, attached Below the photo-sensitive cell.
According to one embodiment of the invention, functional layer described in described camera module is a coat of metal.
According to one embodiment of the invention, conductive unit described in described camera module is anisotropic conductive film.
According to one embodiment of the invention, described camera module include multiple camera lenses, multiple photosensory assemblies and Multiple filter elements, form an array camera module.
Another aspect of the present invention provides the manufacture method of a filter element, and it includes step:
One glass material is ground to form a curved plane body, or passes through the curved surface of a transparent resin material injection molding one Main body, or on the basis of a glass, die casting transparent resin forms a curved plane body, so as to form a filter element, It has refraction and filtration and the eyeglass that can replace a camera lens of a camera module to light.
As needed, it may also include step:Adhere to a film layer in the curved plane body outer surface.
According to one embodiment of the invention, glass material described in described filter element manufacture method is smalt.
According to one embodiment of the invention, curved plane body described in described filter element manufacture method is to absorb Mode filtering infrared light.
According to one embodiment of the invention, film layer described in described filter element manufacture method is combination:It is infrared Cut film and the one of which in visible ray anti-reflection film or two kinds.
According to one embodiment of the invention, film layer is by spraying, brushing described in described filter element manufacture method The mode for applying or attaching, which is arranged at, is attached to the curved plane body.
Brief description of the drawings
Fig. 1 is the schematic perspective view according to the camera module of first preferred embodiment of the present invention.
Fig. 2 is the schematic cross-sectional view according to the camera module of first preferred embodiment of the present invention.
Fig. 3 is the decomposing schematic representation according to the camera module of first preferred embodiment of the present invention.
Fig. 4 is illustrated according to the three-dimensional of filter element of the camera module of first preferred embodiment of the present invention Figure.
Fig. 5 is the filter element schematic side view according to the camera module of first preferred embodiment of the present invention.
Fig. 6 is the effect of light process schematic according to the camera module of first preferred embodiment of the present invention.
Fig. 7 is the first system according to the filter element of the camera module of first preferred embodiment of the present invention Make method.
Fig. 8 is second of system according to the filter element of the camera module of first preferred embodiment of the present invention Make method.
Fig. 9 is the third system according to the filter element of the camera module of first preferred embodiment of the present invention Make method.
Figure 10 is to be cutd open to show schematic diagram according to the camera module of second preferred embodiment of the present invention.
Figure 11 is the camera module decomposing schematic representation according to second preferred embodiment of the present invention.
Figure 12 is the camera module schematic perspective view according to the 3rd preferred embodiment of the present invention.
Figure 13 is to be cutd open to show schematic diagram according to the camera module of the 3rd preferred embodiment of the present invention.
Figure 14 is the camera module decomposing schematic representation according to the 3rd preferred embodiment of the present invention.
Figure 15 is the photosensory assembly decomposing schematic representation according to the camera module of the 3rd preferred embodiment of the present invention.
Figure 16 is the schematic perspective view according to the camera module of the 4th preferred embodiment of the present invention.
Figure 17 is the schematic cross-sectional view according to the camera module of the 4th preferred embodiment of the present invention.
Embodiment
Describe to be used to disclose the present invention below so that those skilled in the art can realize the present invention.In describing below Preferred embodiment be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.With The general principle of the invention defined in lower description can apply to other embodiments, deformation program, improvement side Case, equivalent and the other technologies scheme without departing from the spirit and scope of the present invention.
It will be understood by those skilled in the art that the present invention exposure in, term " longitudinal direction ", " transverse direction ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", the instruction such as " outer " Orientation or position relationship be to be based on orientation shown in the drawings or position relationship, its be for only for ease of describe this hair Bright and simplified description, rather than indicate or imply that signified device or element must be with specific orientation, Yi Te Fixed azimuth configuration and operation, therefore above-mentioned term is not considered as limiting the invention.
As shown in Figures 1 to 9, it is camera module according to the first advantageous embodiment of the invention.The shooting Module includes a photosensory assembly 10, a support 20, a filter element 30, a camera lens 40 and a motor 50.
The support 20 is installed in the photosensory assembly 10, and the filter element 30 is installed in the branch Frame 20, to cause the filter element 30 to be located at the photosensitive path of the photosensory assembly 10.The camera lens 40 By by the motor 50 is installed on, the motor 50 is installed in the support 20, in order to the camera lens 40 are located at the photosensitive path of the photosensory assembly 10, and can adjust the camera lens 40 by the motor 50, So as to form the dynamic burnt camera module AFCM (Active Focus Camera Model) of focus adjustable.Namely Say, during image is gathered by the camera module, the mirror is passed through by the light that collection target reflects First 40 enter inside the camera module, and light passes through the refraction action of the camera lens 40, and the optical filtering Refraction, the filter action of element 30 and reach the photosensory assembly 10 and carry out photosensitization, by described photosensitive Component 10 realizes photoelectric conversion, so as to complete the collection of target image, and during collection, Ke Yitong The motor 50 is overregulated to adjust the focal length of the camera module, in order to obtain predetermined target image.
It is noted that in this embodiment in accordance with the invention, come exemplified by moving burnt camera module AFCM Illustrate, and in other embodiments of the invention, the camera module can also focus camera module for one FFCM(Fix Focus Camera Model).That is, it is not necessary to the motor 50, the camera lens 40 The support 20 is directly installed in, so as to form the camera module of focal length fixation.Those skilled in the art Member is not limitation of the invention it should be appreciated that the type of the camera module.
The photosensory assembly 10 includes a photo-sensitive cell 11 and a circuit panel element 12, the photo-sensitive cell 11 It is attached at the circuit panel element 12.Further, the photo-sensitive cell 11 is electrically connected by an at least connecting line In the circuit panel element 12.Citing ground, the connecting line can be gold thread, silver wire or copper cash.The sense Optical element 11 can be a sensitive chip, such as CCD or CMOS chip.The material of the circuit panel element 12 Material can be PCB (Printed Circuit Board, rigid printed circuit boards), FPC (Flex Print Circuit, Flexible printed-circuit board) or RF (Rigid Flex, Rigid Flex).
That is, during IMAQ, the light of camera lens 40 is incident in, by the camera lens 40 After the optical effect of the filter element 30, reach the photo-sensitive cell 11 and carry out photosensitization, light is believed Number being changed into electric signal is transferred to the circuit panel element 12, and further, passing through the circuit panel element 12 will Electric signal is transferred to the application apparatus of the camera module, such as mobile phone, notebook computer, tablet personal computer, is passing through Cross the reduction of the application apparatus so that acquisition target is presented in the form of images.
The camera lens 40 includes a lens barrel 41 and an at least eyeglass 42, the eyeglass 42 are installed in the mirror Cylinder 41, and the central optical axis of the eyeglass 42 are consistent with the central axis of the photosensory assembly 10.
Reference picture 4, Fig. 5, Fig. 6, the filter element 30 include a curved plane body 31, the curved plane body 31 be in eyeglass shape, during make it that light passes through the curved plane body 31, is reflected by the curved plane body 31. The curved plane body 31 has optical filtering performance, that is to say, that, can quilt when light passes through the curved plane body 31 Filtering.That is, described curved plane body 31 has the dual-use function of light filtering and light refraction, so as to work as light During by the curved plane body 31, reflected after being filtered.Further, the filter element 30 have and The consistent light refraction action of eyeglass 42, so that the curved plane body 31 can take on the work(of eyeglass 42 Energy.In other words, the curved plane body 31 carries out refraction action in a manner of eyeglass 42 to light, and filters Some light therein.That is, knot of the curved plane body 31 equivalent to traditional eyeglass and optical filter Close.
Citing ground but be not limited to, the curved plane body 31 has the function that filtering infrared light.That is, when containing red When the light of outer light passes through the curved plane body 31, infrared light therein is reflected and gone out after being filtered.When So, in other embodiments, the curved plane body 31 can also have other light filtering functions, such as can See light or the wavelength of predetermined band.
Further, according to this embodiment of the invention, the curved plane body 31 filters it in a manner of absorption In light.In other words, when light passes through the curved plane body 31, some light is emitted after being refracted, And some light is absorbed, and can not be emitted.
Citing ground but be not limited to, the curved plane body 31 can be smalt curved plane body, facilitate the use indigo plant Absorbent properties of the glass material to infrared light.
It is noted that traditional cutoff filter stops the transmission of infrared light by way of reflection, It is stronger for the dependence of angle of incidence of light degree, the thickness of reflectance coating, only when the thickness of optical film is incidence Wavelength 1/4 when, reflectivity is maximum, and due to incidence angle not both less than critical angle, and needs the ripple filtered Length is a value range, and the thickness of reflectance coating is simply set according to centre wavelength, therefore for the light at edge The reflectivity of line is less better.And reflectance coating can be sent out the interception function of infrared light with the change of incident angle Raw larger skew.Such case causes, in the image of the collection of traditional camera module, causes picture centre The color shading phenomenons that rubescent edge occurs.And reflective optical filtering, easily occur by reflected light it is secondary into Picture, form halation or ghost phenomenon.And according to an embodiment of the invention, the filtering infrared light by way of absorption, It can effectively prevent the defects of above-mentioned, be relied on for angle of incidence of light smaller, color chips and miscellaneous can be prevented The problem of light ghost, the image color of shooting are softer, natural.
Reference picture 4, further, according to this embodiment of the invention, the filter element 30 includes a film Layer 32, the film layer 32 is attached to the curved plane body 31, with strengthen the filter element 30 to light The action function of line.
According to this embodiment of the invention, the film layer 32 is an anti-reflection film or cut film.Citing ground, institute It can be an infrared cut coating to state film layer 32, or the film layer 32 can be visible ray anti-reflection film.Certainly, institute State film layer 32 and be not limited to a kind of film of function.That is, the film layer 32 can be a kind of film, can also For the compound of multiple film, for example anti-reflection film and cut film is compound.Especially, it is described during implementation Film layer 32 can be arranged at the surface of curved plane body 31 by way of spraying or brushing.And the present invention's In other embodiment, the film layer 32 can also be not provided with, blue glass is arranged at than curved plane body 31 as will be described Glass curved plane body, the refraction of light is realized by the curved-surface structure of eyeglass shape, and itself has filtering infrared light Effect, so as to realize the dual-use function of eyeglass and optical filter.
It is noted that the quantity of the film layer 32 is not limited to one layer, can be two layers, three layers or more Layer.
It will also be appreciated that from the foregoing, the filter element 30 has the dual of eyeglass and optical filter Function, filtered while being reflected to light, thus the filter element 30 can substitute it is described Wherein a piece of eyeglass 42 in camera lens 40, so that the quantity of eyeglass 42 in the camera lens 40 is reduced, from And cause the height reduction of the camera module.Citing, the camera lens 40 in original camera module is by 5 mirrors Piece 42 is formed, after original optical filter is replaced with the filter element 30 of the present invention, the camera lens 40 eyeglass 42 only may need 4 cans to reach the refraction and mistake of original camera lens and optical filter to light Filter acts on, hence in so that the height reduction of the lens barrel 41, so that the height reduction of the camera module, It is applied to various ultrathin electronic equipments so as to convenient, such as mobile phone, tablet personal computer, notebook computer, wearable Equipment etc..
Reference picture 7, further, according to the above preferred embodiment of the present invention, the present invention provides a filter element Manufacture method 1000, including step:
1100:One glass material is ground to form a curved plane body 31;With
1200:Adhere to a film layer 32 in the outer surface of curved plane body 31.
Wherein, in the step 1100, the curved plane body 31 is in eyeglass shape, is had to light and eyeglass Consistent refraction action.The glass material has absorption to light, such as, have to infrared light and absorb Effect, glass material citing ground but is not limited to smalt.
The film layer 32 citing ground but it is not limited to infrared cut coating or visible ray anti-reflection film.
Further, in the step 1200, the film can be adhered to by way of spraying, brushing or attach Layer 32 is in the curved plane body 31.
Reference picture 8, according to the above preferred embodiment of the present invention, the present invention provides the manufacture of another filter element Method 2000, including step:
2100:Pass through the curved plane body 31 of a transparent resin material injection molding one;With
2200:Adhere to a film layer 32 in the outer surface of curved plane body 31.
In the step 2100, the curved plane body 31 is in mirror laminated structure, is had and eyeglass one to light The refraction action of cause.The transparent resin material has light absorption effect, such as, have to infrared light and absorb Effect.
The film layer 32 citing ground but it is not limited to infrared cut coating or visible ray anti-reflection film.
Further, in the step 2200, the film can be adhered to by way of spraying, brushing or attach Layer 32 is in the curved plane body 31.
Reference picture 9, according to the present invention above preferred embodiment, another filter element of offer of the invention, system Make method 3000, including step:
3100:On the basis of a glass, die casting transparent resin forms a curved plane body 31;With
3200:Adhere to a film layer 32 in the outer surface of the curved plane body 31.
In the step 3100, the curved plane body 31 is in the shape structure of eyeglass 42, is had to light and mirror The consistent refraction action of piece.The glass forms the curved plane body 31 to light with the transparent resin material With absorption, such as, there is absorption to infrared light.Glass citing ground but it is not limited to smalt.
The film layer 32 citing ground but it is not limited to infrared cut coating or visible ray anti-reflection film.
Further, in the step 3200, the film can be adhered to by way of spraying, brushing or attach Layer 32 is in the curved plane body 31.
Reference picture 6, according to the above preferred embodiment of the present invention, the present invention provides a light transmission method, its Including step:Refraction and absorption ground transmission ray.By such light transmission method, light is imitated gradually By the effect after eyeglass 42 and optical filter so that two mechanisms are combined together, rather than gradually Mode.That is, it is to be absorbed and reflected simultaneously, rather than is first reflected, then is absorbed.And by Such light transmission means, can correspond to and the improvement of structure is carried out with the camera module of light-transporting principle.
As shown in Figure 10 and Figure 11, be according to the present invention second preferred embodiment camera module.It is described Camera module includes a photosensory assembly 10, a support 20, the motors 50 of a camera lens 40B and one.
The support 20 is installed in the photosensory assembly 10, and the camera lens 40B is by by being installed on the motor 50, the motor 50 is installed in the support 20, in order to which the camera lens 40B is located at the photosensory assembly 10 photosensitive path, and the camera lens 40B can be adjusted by the motor 50, so as to form focus adjustable Dynamic burnt camera module AFCM (Active Focus Camera Model).That is, taken the photograph by described During as module collection image, as described in the light that collection target reflects by camera lens 40B entrance Inside camera module, light reaches the photosensory assembly by the refraction and filtration of the camera lens 40B 10 carry out photosensitization, photoelectric conversion are realized by the photosensory assembly 10, so as to complete adopting for target image Collection, and during collection, the focal length of the camera module can be adjusted by adjusting the motor 50, In order to obtain predetermined target image.
It is noted that in this embodiment in accordance with the invention, come exemplified by moving burnt camera module AFCM Illustrate, and in other embodiments of the invention, the camera module can also focus camera module for one FFCM(Fix Focus Camera Model).That is, it is not necessary to the motor 50, the camera lens 40B The support 20 is directly installed in, so as to form the camera module of focal length fixation.Those skilled in the art Member is not limitation of the invention it should be appreciated that the type of the camera module.
Different from above preferred embodiment, the camera lens 40A includes a lens barrel 41A and at least one and filtered Element 30A, the filter element 30A are installed in the lens barrel 41A.The camera lens 40A includes one Eyeglass 42A, the eyeglass 42A are installed in the lens barrel 41A, positioned at the upper of the filter element 30A Side.That is, using the filter element 30A as the eyeglass of the camera lens 40A, and be to have to filter The eyeglass of effect.
Consistent with first preferred embodiment, the filter element 30A includes a curved plane body 31A, The curved plane body 31A is in eyeglass shape, during make it that light passes through the curved plane body 31A, by the song Face main body 31A is reflected.The curved plane body 31A has optical filtering performance, that is to say, that described in light passes through During curved plane body 31A, it can be filtered.That is, described curved plane body 31A has light filtering and light refraction Dual-use function, so as to when light passes through the curved plane body 31A, reflected after being filtered.Enter one Step, the filter element 30A has the light refraction action consistent with eyeglass, so that the curved surface master Body 31A can take on eyeglass 42A function.In other words, the curved plane body 31A is in a manner of eyeglass Refraction action is carried out to light, and filters some light therein.That is, the phase of curved plane body 31 When in the combination of traditional eyeglass and optical filter.
Citing ground but be not limited to, the curved plane body 31A has the function that filtering infrared light.That is, when containing When the light of infrared light passes through the curved plane body 31A, infrared light therein is reflected and gone out after being filtered. Certainly, in other embodiments, the curved plane body 31A can also have other light filtering functions, than Such as visible ray or the wavelength of predetermined band.
Further, according to this embodiment of the invention, the curved plane body 31A is filtered in a manner of absorbing Light therein.In other words, when light passes through the curved plane body 31A, some light goes out after being refracted Penetrate, and some light is absorbed, and can not be emitted.
Citing ground but be not limited to, the curved plane body 31A can be smalt curved plane body, facilitate the use Absorbent properties of the smalt material to infrared light.
Further, according to this embodiment of the invention, the filter element 30A includes a film layer 32A, The film layer 32A is attached to the curved plane body 31A, with strengthen the filter element 30A to light Action function.
According to this embodiment of the invention, the film layer 32A is an anti-reflection film or cut film.Citing ground, The film layer 32A can be an infrared cut coating, or the film layer 32A can be visible ray anti-reflection film.When So, the film layer 32A is not limited to a kind of film of function.That is, the film layer 32A can be one kind Film, or multiple film it is compound, for example anti-reflection film and cut film is compound.Especially, in the mistake of implementation Cheng Zhong, the film layer 32A can be arranged at the curved plane body 31A surfaces by way of spraying or brushing. And in other embodiments of the invention, the film layer 32A can also be not provided with, than curved plane body as will be described 31A is arranged at smalt curved plane body 31A, and the refraction of light is realized by the curved-surface structure of eyeglass shape, and certainly Body has the function that filtering infrared light, so as to realize the dual-use function of eyeglass and optical filter.
Can be it is noted that the quantity of the film layer 32A is not limited to one layer two layers, three layers or more Multilayer.
In other words, remove traditional optical filter, the filter element 30A be arranged in lens barrel 41A, So that the camera lens 40A turns into a camera lens 40A with light refraction and with light filtration. During the camera module is assembled, then the filter element 30A need not be installed on the support 20 process.Relative to traditional camera module, a remote element that filters can undertake eyeglass and optical filtering The dual-use function of piece so that original optical filter and eyeglass combine the locus occupied and be reduced, so as to subtract The whole height of the small camera module, it is convenient to be applied to ultrathin electronic equipment, as mobile phone, tablet personal computer, Notebook computer, wearable device etc..
It is the camera module according to the 3rd preferred embodiment of the present invention as shown in Figure 12 to 15.It is different from Above-mentioned first preferred embodiment, the camera module include a photosensory assembly 10B.The photosensory assembly 10B includes an a photo-sensitive cell 11B and circuit panel element 12B.The circuit panel element 12B is overlapped in institute State photo-sensitive cell 11B.Further, the circuit panel element 12B is fixed in the photo-sensitive cell 11B, So that the photo-sensitive cell 11B and the circuit panel element 12B relative position will not change.
Further, photo-sensitive cell 11B described in reference picture 15 has an a positive 111B and back side 112B.Institute It is the one side with sensitization function to state positive 111B, and the back side 112B is one without sensitization function Face, when being assembled into camera module, the positive 111B is relative with the camera lens 40, and the back side 112B It is opposite with the camera lens 40.Especially, in this embodiment in accordance with the invention, the circuit panel element 12 is taken It is connected to the positive 111B of the photo-sensitive cell 11B, that is to say, that during assembling, the photosensitive member Part 11B provides a Support Position for the circuit panel element 12B.
Specifically, the photo-sensitive cell 11B may be implemented as a sensitive chip.Such as, CCD or CMOS.
In this embodiment in accordance with the invention, the photosensory assembly 10B includes a functional layer 13B, to improve State photosensory assembly 10B performance, such as heat dispersion, such as structural strength performance.Further, it is described Functional layer 13B is attached to the back side 112B of the photo-sensitive cell 11B, to improve the photo-sensitive cell 11B Performance.Especially, the functional layer 13B is implemented as a coat of metal, is attached to the photosensitive member The back side 112B of part 11, so as to increase the structural strength of the photo-sensitive cell 11B, and improve the sense Optical element 11B heat dispersion.And in other embodiments of the invention, the functional layer 13B can be with For the functional layer 13B of other types or structure, such as metallic plate.The functional layer 13B can also integrally be set It is placed in the photo-sensitive cell 11B and the circuit panel element 12B, that is to say, that be not limited to be arranged at described Photo-sensitive cell 11B.And in another embodiment of the invention, the photosensory assembly 10B can also be not provided with institute State functional layer 13B.Those skilled in the art is it should be appreciated that type, the setting of the functional layer 13B Position is not the limitation of the present invention.
Further, it is non-to include a photographic department 1111B and one by the positive 111B of the photo-sensitive cell 11B Photographic department 1112B.The photographic department 1111B is photosensitive for carrying out, and the non-photo-sensing portion 1112B is used for signal Processing.The non-photo-sensing portion 1112B is located at the periphery of the photosensitive area.That is, carried out in camera module During IMAQ, after light enters the camera module inside, make by the refraction of the camera lens 40 With and its optical filter filter action and the photographic department 1111B that reaches the photo-sensitive cell 11B enter Row photosensitization, and then handled by the logical signal of the non-photo-sensing portion 1112B, photoelectric conversion process is completed, Circuit signal is converted light signals into, realizes the signal acquisition of image.
According to this embodiment of the invention, the circuit panel element 12B is overlapped in the photo-sensitive cell 11B The non-photo-sensing area, so as to not interfere with the photo-process of the photo-sensitive cell 11B.That is, institute State the marginal position that circuit panel element 12B is overlapped in the photo-sensitive cell 11B.Citing ground, when the sense When optical element 11B is square, the circuit panel element 12B is along a square edge lap.
Further, the non-photo-sensing portion 1112B includes a wiring board bonding pad 11121B, for electrically connecting The circuit panel element 12B.That is, the wiring board bonding pad 11121B be arranged at it is described photosensitive Element 11B marginal position, and pass through the electricity of circuit panel element described in the wiring board bonding pad 11121B 12 It is connected to the photo-sensitive cell 11B.That is, described circuit panel element 12B and the photo-sensitive cell 11B are being tied It is electrically connected to each other while overlap joint on structure.
Reference picture 15, the circuit panel element 12B include a first line plate portion 121B and one second wiring board Portion 122B, the second circuit plate portion 122B are connected to the first connecting portion.The first connecting portion is used for The photo-sensitive cell 11B is connected, the second circuit plate portion 122B is used to connect other circuit elements.
The first line plate portion 121B includes a photosensitive bonding pad 1211B, for electrically connecting the photosensitive member Part 11B.The photosensitive bonding pad 1211B and the wiring board bonding pad 11121B are corresponding, form an electricity Attachment structure, for electrically connecting the photo-sensitive cell 11B and the circuit panel element 12B.That is, work as When carrying out photosensitization, the photo-sensitive cell 11B passes through the photosensitive bonding pad 1211B and the wiring board The electric connection structure that bonding pad 11121B is formed is transmitted signal to the line by the photo-sensitive cell 11B Road panel element 12B.
Further, the wiring board bonding pad 11121B of the photo-sensitive cell 11B and the circuit panel element The 12B photo-sensitive cell 11B each includes at least conductive unit 111211B, a 12111B, corresponding institute State the interconnection effect of conductive unit so that the photo-sensitive cell 11B and circuit panel element 12B electricity Connection.And pass through the conductive unit 111211B, 12111B connection so that the photo-sensitive cell 11B and The longitudinal direction of the circuit panel element 12B connections has preferable electric conductivity, and laterally has preferable insulating properties Can, that is to say, that selective electric conductivity.Citing ground, the conductive unit 111211B, 12111B Anisotropic conductive film ACF (Anisotropic Conductive Film) is may be implemented as, in the photosensitive member Direction vertical the part 11B and circuit panel element 12B has preferable electric conductivity, and the photo-sensitive cell Direction parallel with the circuit panel element 12B 11B has preferable insulating properties.According to this reality of the present invention Example is applied, the photo-sensitive cell 11B and the circuit panel element 12B each include multiple conductive units 11211B, 12111B, respectively along the photo-sensitive cell 11B and the circuit panel element 12B edge accordingly Arrangement, and the wiring board bonding pad 11121B and photosensitive bonding pad 1211B is formed, form the electricity Attachment structure.
For example, the conductive unit 111211B, 12111B may be implemented as list structure, and each Arranged along the photo-sensitive cell 11B and the circuit panel element 12B marginating compartment, so as to be formed The corresponding connection area 11121B and the photosensitive bonding pad 1211B of strip.Certainly, at this In the other embodiment of invention, the conductive unit 11211B, 12111B may be also configured to other shapes And layout, for example circular point shape is intervally arranged, such as square interval layout.Those skilled in the art should Understand, the conductive unit 111211B, 121111B shape, layout and quantity can be as needed And set, it is not the limitation of the present invention.
, can be in the circuit of the photo-sensitive cell 11B during the photosensory assembly 10B is manufactured The plate bonding pad 11121B and institute circuit panel element 12B photosensitive bonding pad 1211B sets anisotropy respectively Conductive adhesive film, and then the effect for passing through pressing so that the photo-sensitive cell 11B and circuit panel element 12B Realization stably electrically connects.
The second circuit plate portion 122B includes a connector 1221B, for being electrically connected to other circuit elements. That is, when the camera module is employed other electronic equipments, for example, it is mobile phone, notebook computer, flat Plate computer, the element of the electronic equipment is electrically connected to by the connector 1221B, it is described so as to realize Information transfer between camera module and the electronic equipment, the image information of the camera module is transferred to institute State electronic equipment.In this embodiment in accordance with the invention, the connection is arranged at and the photosensitive bonding pad The position of 1211B homonymies, and in other embodiments, the connector 1221B can also be arranged at difference Position, for example the position with the photosensitive bonding pad 1211B heteropleurals, those skilled in the art should be understood , the type and set location of the connector 1221B are not the limitation of invention.
In other words, the first connecting portion undertakes the photo-sensitive cell 11B and the circuit panel element 12B Electrical connection, the second connecting portion undertakes the connection of the camera module and other electronic equipments so that The light information that the camera lens 40 gathers, is converted into electric signal by the photo-sensitive cell 11B, then may be used To be transferred to the electronic equipment of the camera module application by the circuit panel element 12B.
The first line circuit plate portion of the circuit panel element 12B and the second circuit plate portion 122B's Material can be FPC (Flex Print Circuit, flexible printed-circuit board), PCB (Printed Circuit Board, Rigid printed circuit boards) or RF (Rigid Flex, Rigid Flex).The first line plate portion 121B and The second circuit plate portion 122B can choose same material, can also choose different materials and be combined, For example first line plate portion 121B is FPC, the second circuit plate portion 122B is PCB.Preferably, institute State first line plate portion 121B and choose FPC, in order to be arranged in pairs or groups with the material of the photo-sensitive cell 11, So that the circuit panel element 12B and the photo-sensitive cell 11B are connected firmly, stably.It is noted that The material type of the circuit panel element 12B, only illustrate the mode that can be carried out as an example, not It is the limitation of the present invention.
According to this embodiment of the invention, the support 20 is installed in the photo-sensitive cell 11B.Also It is to say, the photo-sensitive cell 11B is as the support 20, the filter element 30, the motor 50 and institute The installation foundation of camera lens 40 is stated, is not the circuit panel element 12B.More specifically, the quilt of support 20 The non-photo-sensing portion 1112B of the photo-sensitive cell 11B is installed on, is surrounded on the outer of the photographic department 1111B Side.Citing ground, the support 20 are assembled in the photo-sensitive cell 11B by bonding or integrally formed mode. Those skilled in the art is it should be appreciated that the mounting means of the support 20 is not the limitation of the present invention.
Further, in this embodiment in accordance with the invention, one end of the photo-sensitive cell 11B protrudes from the branch Frame 20, a brim of a hat 113B is formed, in order to provide installation site for the wiring board.It is that is, described The wiring board bonding pad 11121B of photo-sensitive cell 11 protrudes the support 20, positioned at the support 20 Outside.According to this embodiment of the invention, there is provided the two of the camera module and the photosensory assembly 10B Kind assembling mode, in a kind of assembling mode, first assembles the photosensory assembly 10B, that is to say, that first by institute State photo-sensitive cell 11B and the circuit panel element 12B is assembled, for example press, and then by filter set Loaded on the support 20B, support 20B is then installed on the photo-sensitive cell 11B, and then the mirror is installed First 40, the part such as described motor 50.And in another assembling mode, first by the associated components group of camera lens 40 Dress, then assembles the photo-sensitive cell 11B and the circuit panel element 12B, that is to say, that first by the branch The parts such as frame 20, the optical filter, the camera lens 40 and the motor 50 are assembled, then by described in Circuit panel element 12B is assembled in the brim of a hat 113B for protruding from the support 20.Such as first by the optical filter The support 20 is assembled in, and then the support 20 is installed on the photo-sensitive cell 11B, and can be simultaneously The camera lens 40 is installed on the motor 50, the motor 50 is further installed on the support 20, The circuit panel element 12B is then overlapped in the photo-sensitive cell 11B.
In traditional camera module, sensitive chip is attached at wiring board, and is realized be electrically connected by gold thread therebetween Connect, so as to which the signal of the sensitive chip is transmitted to the wiring board by gold thread, and this knot of the present invention Structure and transmission path are different from traditional mode.
First, in the present invention, and gold thread need not be set, i.e. in assembling manufacture process, it is not necessary to enter Row beats process as gold thread, simplifies the technological process of production, and need not be pre- in the interior space of the camera module Stay gold thread position.In other words, the inner side of the support 20 not reserve the gold thread position, original to beat Gold thread position is all changed into installing the position of the support 20, so as to extend installing for the support 20 Position, there is provided the possibility that the support 20 is inwardly indented, so that the lateral dimension of the camera module of assembling It is reduced.
Secondly, original gold thread is positioned at the inner side of support 20, that is to say, that where the camera lens 40 Optical system in, therefore, the light reflected by the gold thread can turn into veiling glare and the photosensitive camera module Image quality.And during gold thread is beaten, the dust debris of residual, be also easy to pollute camera lens 40, and Influence the imaging effect of the camera module.
3rd, in the present invention, the camera module is assembled based on the photo-sensitive cell 11B, rather than Based on wiring board, hence in so that influence of the wiring board to the camera module reduces.Such as the circuit Plate is overlapped in the positive 111B sides of the photo-sensitive cell 11B, cannot participate in the thickness of the camera module Among calculating so that the thickness of camera module is reduced.For example carrying out AA (Active Arrangement Automatic alignment) adjustment when, by directly adjust the sensitive chip, the support 20, the motor 50 or The grade part of camera lens 40 realizes the uniformity of optical axis, so as to avoid the accumulated error that wiring board is brought. Therefore the assembling mode based on this 11B by photo-sensitive cell, it is all right in terms of physical dimension and optical property Camera module brings improvement.
To sum up, the camera module obtained according to the present invention, provide on thickness and lateral dimension and further reduce Possibility, meet the requirement of the lightening development of electronic equipment, be suitable for the application of in respective electronic equipment, for example, mobile phone, Tablet personal computer, notebook computer, micro-camera device and wearable device etc..Those skilled in the art should When understanding, the application apparatus and application scenarios of the camera module are not the limitation of the present invention.
It is noted that according to this embodiment of the present invention, the filter element 30 has to light Refraction action and light filtration, therefore the dual-use function with eyeglass 42 and optical filter.It is being assembled in During camera module, eyeglass 42 in camera lens 40 can be substituted while original optical filter is substituted, hence in so that institute Original height reduction of camera lens 40 is stated, so as to reach the effect for the thickness for reducing the camera module.The song The photosensory assembly 10B of face optical filter and overlapping mode is combined, and reduces the shooting mould from different aspect The thickness of group and and lateral dimension, a readily available ultra-thin camera module, so as to it is convenient be applied to it is various right Size requires lightening electronic equipment, as mobile phone, notebook computer, tablet personal computer, micro-camera device with And electronic equipment such as wearable device etc..
As shown in FIG. 16 and 17, be according to the present invention the 4th preferred embodiment camera module.
In this embodiment, the camera module is implemented as an array camera module.The array shooting Module includes at least two camera modules, so as to realize the gatherer process of image by the cooperation of multiple camera modules.
Herein for purposes of illustration only, being illustrated by taking the array camera module that two camera modules are formed as an example, i.e. It is double to take the photograph module.The array camera module include a photosensory assembly 10C, two stands 20, two filter elements 30, Two motors 50 and two camera lenses 40.
It is noted that the present invention is disclosed for convenience, in this embodiment in accordance with the invention, with two institutes State and illustrate exemplified by the array camera module of the composition of camera lens 40, and in the other embodiment of the present invention In, the quantity of the camera lens 40 can be more, such as three or more than three, those skilled in the art Member it should be appreciated that the quantity of the camera lens 40 and the quantity of corresponding assembly, as motor 50, support 20, The quantity of optical filter is not the limitation of the present invention.
The photosensory assembly 10C includes two photo-sensitive cells 11, the two circuit panel elements 12, two institutes Circuit panel element 12 is stated to be electrically connected in the corresponding photo-sensitive cell 11.Two supports 20 respectively by The photo-sensitive cell 11 is installed on, two filter elements 30 are installed in two supports 20 respectively, so that Obtain the photosensitive path that the filter element 30 is located at the corresponding photo-sensitive cell 11.Two quilts of motor 50 The support 20 is installed on, two camera lenses 40 are installed in two motors 50 respectively, to cause the mirror First 40 respectively positioned at the photosensitive path for each corresponding to the photo-sensitive cell 11, and can by each motor 50 To adjust the focal length of the camera module.During IMAQ, light enters two camera lenses 40, After the refraction action of two camera lenses 40, each filter element 30 corresponding to arrival, then by each Refraction, the filter action of the filter element 30 reach each photo-sensitive cell 11, and then pass through each sense The photosensitization of optical element 11, electric signal is converted light signals into, and then will by the circuit panel element 12 Electric signal transmission is to the electronic equipment applied, so as to once complete the collection of two groups of images, i.e. array mould simultaneously The photographic effect of group.
More specifically, in this embodiment in accordance with the invention, two integrally connecteds of circuit panel element 12, with It is easy to be formed the structure of array.That is, when assembling the photosensory assembly 10C, can be by once The circuit panel element 12 is connected to the photo-sensitive cell 11 by pressing.
During the array camera module is assembled, the one circuit panel element 12 is installed on one The photo-sensitive cell 11, support 20 is then respectively arranged in position corresponding to two circuit panel elements 12, And then each optical filter, each motor 50 and each camera lens 40 are assembled in the support 20 respectively.
It is noted that in this embodiment in accordance with the invention, two supports 20 are each independent, also It is to say, the camera lens 40, the filter element 30 and the motor 50 and the support 20 are one a pair The relation answered, and in other embodiments, the camera lens 40, the filter element 30 and the motor 50 Can be with shared support 20, for example an integral support 20 is formed, the adjacent camera lens 40, the filter element 30 And the motor 50 can share the center section of integral support 20, it should be understood by those skilled in the art that It is that the planform of the support 20 is not the limitation of the present invention.
It should be understood by those skilled in the art that the embodiments of the invention shown in foregoing description and accompanying drawing are only used as Illustrate and be not intended to limit the present invention.The purpose of the present invention completely and effectively realizes.The present invention function and Structural principle shows and illustrated in embodiment, under without departing from the principle, embodiments of the present invention Can there are any deformation or modification.

Claims (32)

  1. A 1. filter element, for a camera module, it is characterised in that including a curved plane body, to light With refraction and filtration, to replace an eyeglass of a camera lens of the camera module.
  2. 2. filter element according to claim 1, wherein the filter element absorbs ground filtering light.
  3. 3. filter element according to claim 1, wherein the filter element to infrared Absorption mistake Filter.
  4. 4. filter element according to any one of claims 1 to 3, wherein the curved plane body is smalt Material.
  5. 5. filter element according to any one of claims 1 to 3, wherein the filter element includes a film Layer, it is attached to the outer surface of the curved plane body.
  6. 6. filter element according to claim 5, wherein the film layer is combination:Cut film and anti-reflection One of which in film or two kinds.
  7. 7. filter element according to claim 6, wherein the cut film is infrared cut coating, it is described Antireflective coating is visible ray anti-reflection film.
  8. 8. filter element according to claim 6, wherein the film layer is by spraying, brushing or attach Mode be attached to the curved plane body.
  9. A 9. camera lens, for a camera module, it is characterised in that including
    At least one according to any filter element of claim 1 to 8;With
    One lens barrel, the filter element are installed in the lens barrel.
  10. 10. camera lens according to claim 9, wherein the camera lens includes an at least eyeglass, the mirror Piece is installed in the lens barrel, above the filter element.
  11. A 11. camera module, it is characterised in that including:
    An at least camera lens;
    An at least photosensory assembly;With
    At least one filter element according to any one of claims 1 to 8, the filter element and the camera lens Positioned at the photosensitive path of the photosensory assembly.
  12. 12. camera module according to claim 11, wherein the camera module includes a support, institute State support and be mounted the photosensory assembly.
  13. 13. camera module according to claim 12, wherein the camera lens is installed in the support, Camera module is focused to form one.
  14. 14. camera module according to claim 12, wherein the support is connected integrally to the sense Optical assembly.
  15. 15. camera module according to claim 12, wherein the camera module includes a motor, institute State motor and be installed in the support, the camera lens is installed in the motor, in order to form a dynamic burnt shooting Module.
  16. 16. according to any described camera module of claim 11 to 15, wherein the photosensory assembly includes One photo-sensitive cell and a circuit panel element, the circuit panel element are overlapped in photo-sensitive cell.
  17. 17. camera module according to claim 16, wherein the photo-sensitive cell include a photographic department and One non-photo-sensing portion, the non-photo-sensing portion and the circuit panel element respectively include an at least conductive unit, the non-sense Light portion and the circuit panel element are electrically connected to each other by the conductive unit, so that the wiring board is first Part is overlapped in the non-photo-sensing portion of the photo-sensitive cell electrically.
  18. 18. camera module according to claim 17, wherein the line panel element includes a connector, The circuit panel element is electrically connected to, when being applied to an electronic equipment in order to the photosensory assembly, is electrically connected It is connected to the electronic equipment.
  19. 19. camera module according to claim 17, wherein the photosensory assembly includes a functional layer, The photo-sensitive cell back side is attached to, the functional layer is a coat of metal.
  20. 20. camera module according to claim 17, wherein the conductive unit is anisotropic conductive adhesive paste Film.
  21. 21. camera module according to claim 17, including multiple camera lenses, multiple photosensory assemblies With multiple filter elements, an array camera module is formed.
  22. 22. the manufacture method of a filter element, it is characterised in that including step:One glass material is ground A curved plane body is formed to form a filter element, it has refraction and filtration to light and can replace one One eyeglass of one camera lens of camera module.
  23. 23. filter element manufacture method according to claim 22, wherein the glass material is blue glass Glass.
  24. 24. filter element manufacture method according to claim 22, wherein the curved plane body is to absorb Mode filtering infrared light.
  25. 25. filter element manufacture method according to claim 22, in addition to step:Adhere to a film layer In the curved plane body outer surface, wherein the film layer is combination:In infrared cut coating and visible ray anti-reflection film One of which or two kinds.
  26. 26. filter element manufacture method according to claim 22, wherein the film layer by spraying, The mode brushed or attached, which is arranged at, is attached to the curved plane body.
  27. 27. the manufacture method of a filter element, it is characterised in that including step:Pass through a transparent resin material The curved plane body of injection molding one is expected to form a filter element, and it has refraction and filtration to light and can Replace an eyeglass of a camera lens of a camera module.
  28. 28. the manufacture method of filter element according to claim 27, wherein the curved plane body is to red Outer light has absorbing and filtering effect.
  29. 29. the manufacture method of filter element according to claim 27, in addition to step:Adhere to a film Layer is in the curved plane body outer surface, wherein the film layer is combination:In infrared cut coating and visible ray anti-reflection film One of which or two kinds.
  30. 30. the manufacture method of a filter element, it is characterised in that including step:On the basis of a glass, Die casting transparent resin forms a curved plane body to form a filter element, and it has refraction and filtration to light And an eyeglass of a camera lens of a camera module can be replaced.
  31. 31. the manufacture method of filter element according to claim 30, in addition to step:Adhere to a film Layer is in the curved plane body outer surface, wherein the film layer is combination:In infrared cut coating and visible ray anti-reflection film One of which or two kinds.
  32. 32. the manufacture method of filter element according to claim 30, wherein the curved plane body is to red Outer light has absorbing and filtering effect.
CN201610487336.4A 2016-06-23 2016-06-23 Filter element, camera module, manufacturing method and application thereof Active CN107544108B (en)

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