CN109073989A - A kind of camera module and mobile terminal - Google Patents
A kind of camera module and mobile terminal Download PDFInfo
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- CN109073989A CN109073989A CN201780024145.7A CN201780024145A CN109073989A CN 109073989 A CN109073989 A CN 109073989A CN 201780024145 A CN201780024145 A CN 201780024145A CN 109073989 A CN109073989 A CN 109073989A
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- camera lens
- permanent magnet
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
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Abstract
A kind of camera module and mobile terminal, the mould group include: that support plate is disposed on the substrate；Shell and support plate are tightly connected；Lens assembly includes: imaging sensor and camera lens；Voice coil actuator includes: the permanent magnet being fixedly connected with camera lens, and the electromagnet coil for surrounding permanent magnet and being fixedly connected with support plate；Imaging sensor is arranged between substrate and support plate；Camera lens is located in the space that shell and sealing plate are formed, and is filled in shell and provides the liquid of buoyancy to camera lens and permanent magnet.In the above-mentioned technical solutions, electromagnet coil is external in order to radiating, and the power by the buoyancy of liquid as some or all of the gravity for overcoming camera lens and permanent magnet, no matter which position camera lens is in, when needing the magnetic force of electromagnet coil and permanent magnet to overcome the power of gravity as offer a part, the case where to reduce energy consumption, improve photographic effect.
Description
This application claims on 2 4th, 2017 submission Patent Office of the People's Republic of China, application No. is the priority of the Chinese patent application of 201710064653.X, entitled " a kind of camera module ", entire contents are hereby incorporated by reference in the application.
This application involves field of camera technology more particularly to a kind of camera modules and mobile terminal.
Taking pictures is that mobile phone is only second to one of critical function conversed, and scene of taking pictures is also the scene of cell-phone heating problem most serious.Mobile phone average power consumption of camera module during taking pictures accounts for Overall Power Consumption 30% or so (about 1W), since modular volume low power consumption is high, is very easy in outer hull shape into local pyrexia point.It is very high that camera module corresponds to enclosure location local temperature, has been more than the Human Tolerance limit.
Camera module is generally made of main components such as camera lens, voice coil actuator, imaging sensor, printed circuit boards.Wherein voice coil actuator and imaging sensor are main heating devices, and the two about respectively accounts for the power consumption of mould group half, and when camera module temperature increases, many performances of taking pictures will receive and significantly affect, such as focusing speed, image definition.
Summary of the invention
The embodiment of the present application provides a kind of camera module and mobile terminal and improves the image quality of camera module to improve the heat dissipation effect of camera module.
In a first aspect, providing a kind of camera module, which includes: substrate, support plate, lens assembly, voice coil actuator and shell；Wherein,
The support plate setting is on the substrate；
The shell and the support plate are tightly connected；
The lens assembly includes: imaging sensor and the camera lens for being transmitted to light in described image sensor；
The voice coil actuator includes: the permanent magnet being fixedly connected with the camera lens, and the electromagnet coil for surrounding the permanent magnet and being fixedly connected with the support plate, in electromagnet coil power supply, driving force or brake force are provided to the camera lens by the magnetic field formed between electromagnet coil and the permanent magnet；
Described image sensor is arranged between the substrate and the support plate；The camera lens is located in the space that the shell and the sealing plate are formed, and is filled in the shell and provides the liquid of buoyancy to the camera lens and the permanent magnet.
In the above-mentioned technical solutions, by using the external set-up mode of electromagnet coil, facilitate the heat dissipation of electromagnet coil, and, it is hydraulically full by using being filled out in shell, power by the buoyancy of the liquid as some or all of the gravity for overcoming camera lens and permanent magnet, and when using buoyancy, no matter which position camera lens is in, buoyancy size will not all change, therefore, even if the magnetic force of electromagnet coil and permanent magnet is needed to overcome the power of gravity as offer a part, the electric current of electromagnet coil will not be because of camera lens at the position far from imaging sensor, and need to increase electric current, and then reduce energy consumption, improve due in camera module temperature it is excessively high and the case where influence photographic effect.
In a specific embodiment, the density of the liquid and the camera lens and the ratio of the consitutional density of the permanent magnet are in setting first threshold.Guarantee that liquid is capable of providing enough buoyancy, reduces energy consumption of the electromagnet coil when driving camera lens.
In a specific embodiment, first given threshold is 95%~105%.I.e. the given threshold can be different size of threshold value.
In a specific embodiment, the sealing eyeglass with camera lens cooperation is respectively arranged on the shell and the support plate, the sealing eyeglass is plano lens, and be tightly connected between the support plate and the substrate, the space for accommodating described image sensor is surrounded between the substrate and the support plate.Light is not converged using plano lens or diffusion.Effectively guarantee the quality of camera shooting.Meanwhile by forming sealing space between support plate and substrate, liquid leakage can be prevented, can also prevent dust from entering imaging sensor, influence camera function.
In a specific embodiment, the density of the liquid is between 0.2~2g/cm3.In the liquid, arbitrary density can choose, need to only meet the above range requirement.In a specific embodiment, which can have different selections, both can be single substance, such as distilled water, or solution, the solution are solution known to existing material, can carry out the configuration of solubility according to the actual needs.In addition, the liquid can also be colorless or colored solution.In a specific embodiment, the liquid is colourless transparent solution, and the sealing eyeglass between the camera lens and described image sensor is optical filter.In this scenario, since liquid uses colourless transparent solution, therefore, it is necessary to an optical filter is arranged before camera lens with imaging sensor to filter.In another specific embodiment, the liquid is colored transparent liquid, and when light is irradiated to the colored transparent liquid, the colored transparent liquid can be used as optical filter.
In a specific embodiment, the number of the electromagnet coil be it is multiple, multiple electromagnet coils are uniformly arranged around the permanent magnet.Convenient to carry out posture regulation to camera lens, in a more specific embodiment, the number of the electromagnet coil is three or four.Or it can also be using the different numbers such as five, six.And in specific setting, be spaced between the electromagnet coil of arbitrary neighborhood it is identical, to surround a cylindrical space.And the one side of each electromagnet coil towards permanent magnet is the arcwall face of indent.
In a specific embodiment, the permanent magnet is ellipse, and is provided on the permanent magnet for being set with through-hole on the lens.Further, it is also possible to be embedded in camera lens periphery using two or more permanent magnets, a spheroid is scrabbled up.Spheroid is using the principle for the eyeball for imitating human or animal, and resistance is small when moving in liquid environment, and is conducive to do small translation or rotation towards all directions, is convenient for pose adjustment.
In a specific embodiment, further includes setting in the support plate edge and be located at the intracorporal multiple support columns of the shell, and each support column is for fixing an electromagnet coil.Electromagnet coil is supported by support column.Further, it is also possible to come Motionless electromagnetic iron coil in such a way that electromagnet coil is bonded on the supporting plate.
It further include the multiple hall devices for being arranged in the support plate and being used to detect the permanent magnet posture in a specific embodiment.The monitoring to camera lens posture may be implemented by hall device, be conveniently adjusted the posture of camera lens.
In a specific embodiment, the shell is the shell of Heat Conduction Material production, and each electromagnet coil is compressed with the inner wall of the shell and contacted.The heat that electromagnet coil generates can be conducted by shell; convenient for heat dissipation; preferably; the shell can for metal material or or thermal conductivity preferable nonmetallic materials production shell; when using metal shell; the metal-back can be iron-clad, aluminum hull or copper shell, and existing certain intensity protects lens assembly, it may have good thermal conduction effect.
Second aspect provides a kind of mobile terminal, which includes camera module and mainboard chip described in any of the above embodiments, wherein the mainboard chip, which is controlled, powers to the electromagnet coil to drive the camera motion or the braking camera lens.
In the above-mentioned technical solutions, by using the external set-up mode of electromagnet coil, the heat dissipation of electromagnet coil is facilitated, also, hydraulically full by using filling out in shell, power by the buoyancy of the liquid as some or all of the gravity for overcoming camera lens and permanent magnet, and when using buoyancy, no matter which position camera lens is in, and buoyancy size will not all change, therefore
Even if the magnetic force of electromagnet coil and permanent magnet is needed to overcome the power of gravity as offer a part, the electric current of electromagnet coil will not be because of camera lens at the position far from imaging sensor, and need to increase electric current, and then reduce energy consumption, improve due in camera module temperature it is excessively high and the case where influence photographic effect.
In a specific embodiment, when the camera module has the hall device, the control device is also used to when the hall device detects that the camera lens is moved to setting position, and control powers to the electromagnet coil and brakes the camera lens.
In a specific embodiment, when the mainboard imaging sensor is also used to the density in the liquid not equal to the camera lens and the permanent magnet consitutional density, electric current needed for control keeps the camera lens position to electromagnet coil supply.It is the posture that can guarantee camera lens by a lesser electric current, reduces the quantity of heat production of camera module.
Fig. 1 is the structural schematic diagram of camera module provided in an embodiment of the present invention；
Fig. 2 is the cross-sectional view of camera module shown in FIG. 1；
Fig. 3 is the decomposition diagram of camera module shown in FIG. 1.
Below in conjunction with the attached drawing in the embodiment of the present application, the technical scheme in the embodiment of the application is clearly and completely described.
As shown in Figure 1, Figure 2 and Figure 3, wherein Fig. 1 shows the surface structure of the camera module of the embodiment of the present application, and Fig. 2 shows its internal part fit structure, Fig. 3 shows the structure of all parts.
The embodiment of the present application provides a kind of camera module, the camera module includes a substrate 30, the substrate 30 can be printed circuit board, and the connection of camera module and mobile terminal other component for convenience, the end of the printed circuit board is connected to flexible circuit board 31, and one end of the flexible circuit board 31 is provided with connector.Furthermore, the camera module further includes a support plate 21, the support plate 21 is arranged on substrate 30, and support plate 21 and shell 10 are tightly connected and surround a confined space, furthermore, the camera module further includes a lens assembly and a voice coil actuator, support plate 21 and shell 10 are tightly connected and the confined space surrounded is used to accommodate camera lens 60 and the voice coil actuator in lens assembly, and it is filled in the space for providing the liquid of buoyancy to camera lens 60 and electromagnet coil 60 (a part of voice coil actuator), in specific setting, camera lens 60 and voice coil actuator in lens assembly are separately positioned in shell 10, and the sealing eyeglass 40 cooperated with camera lens 60 is respectively provided in shell 10 and support plate 21, two sealing eyeglasses 40 are Plano lens.Light is not converged using plano lens or diffusion.It avoids impacting imaging.Voice coil actuator includes: the permanent magnet 50 being fixedly connected with camera lens 60, and the electromagnet coil 80 for surrounding permanent magnet 50 and being fixedly connected with support plate 21, wherein, when electromagnet coil 80 is powered, driving force or brake force are provided to camera lens 60 by the magnetic field formed between electromagnet coil 80 and permanent magnet 50.
Lens assembly therein is other than including a camera lens 60, it further include an imaging sensor 70, the camera lens 60 is used to the light of intake being transmitted to imaging sensor 70, when in use, light is irradiated into camera lens 60 after passing through the sealing eyeglass 40 on shell 10, and enters imaging sensor 70 after passing through the sealing eyeglass 40 being arranged in support plate 21.In specific setting, the setting of imaging sensor 70 is connect between substrate 30 and support plate 21, and with substrate 30, and the optical signal that camera lens 60 transmits is converted into electric signal and passes to substrate 30, in a specific embodiment, support plate
It is tightly connected between 21 and substrate 30, the space for accommodating described image sensor 70 is surrounded between substrate 30 and support plate 21, is i.e. imaging sensor 70 is sealed, can effectively prevent dust and enter imaging sensor 70, so that dust be avoided to influence camera function.
During installation, camera lens 60 floats on a liquid.Voice coil actuator therein is provides the device of driving force by magnetic force, it includes the electromagnet coil 80 that the permanent magnet 50 being fixedly connected with camera lens 60 and multiple circular permanent magnets 50 are arranged and are fixedly connected with support plate 21, as shown in Figures 2 and 3, in a specific embodiment, the number of electromagnet coil 80 is four, and substrate 30 and shell 10 use rectangle, four electromagnet coils 80 are located at four edges of support plate 21.When electromagnet coil 80 is powered, power is provided to camera lens 60 by the magnetic field formed between electromagnet coil 80 and permanent magnet 50.Specifically, electromagnet coil 80 forms electromagnet after powered up and generates magnetic field, the permanent magnet 50 in magnetic field stress and setting in motion under the magnetic force.In specific control, when the direction in the magnetic field that electromagnet generates changes, permanent magnet 50 will appear to be adsorbed by electromagnet, or the case where being repelled by electromagnet, therefore, the magnetic direction for changing electromagnet can be realized by changing the current direction in electromagnet coil 80, and then realizes the absorption or repulsion between electromagnet coil 80 and permanent magnet 50.Since permanent magnet 50 is fixed on camera lens 60, electromagnet coil 80 is fixedly connected with support plate 21, therefore, can control the movement of camera lens 60 by the current direction and size for controlling electromagnet coil 80.In addition, each electromagnet coil 80 can arbitrarily be arranged different size of current and direction, realizes the translation in any direction of camera lens 60 and rotate at any angle.When using which setting, since electromagnet coil 80 is in periphery, the heat of generation is easier to distribute.In addition, in specific setting, in order to which further convenient for heat dissipation, which is the shell of Heat Conduction Material production, and each electromagnet coil 80 is compressed with 10 inner wall of shell and contacted.The heat that electromagnet coil 80 generates can be conducted by shell 10; convenient for heat dissipation; wherein; the shell 10 can be metal material or the shell of the preferable nonmetallic materials production of thermal conductivity; when using metal shell; the metal-back can be iron-clad, aluminum hull or copper shell, and existing certain intensity protects lens assembly, it may have good thermal conduction effect.
In said structure, camera lens 60 and the permanent magnet 50 being firmly connected with it float on a liquid, and the buoyancy that can both fully rely on liquid, which is realized, to suspend, and suspension can also be realized by buoyancy+magnetic force collective effect.Above-mentioned different is achieved in that depending on the buoyancy based on liquid, the volume of buoyancy F=density * discharge water known to the principle of buoyancy, and in this application, the space surrounded full of entire shell 10 with substrate 30 due to liquid, therefore, the volume of the water for the structure discharge that camera lens 60 and permanent magnet 50 form is identical as the volume of itself, therefore, need to not need the relationship that magnetic force is just decided by between the density of liquid and camera lens 60 and the consitutional density of permanent magnet 50.When the density of liquid is equal to 50 consitutional density of camera lens 60 and permanent magnet, at this time, power is provided without electromagnet coil 80, it can be realized by the buoyancy of liquid and camera lens 60 and permanent magnet 50 float on a liquid, but in this approach, it is higher to required precision, need to guarantee that liquid is identical with camera lens 60 and the consitutional density of permanent magnet 50.But when using which, have the advantages that without additional magnetic force, when camera lens 60 is moved to desired position, holding can be realized in the position.Therefore, it powers when stablizing camera lens 60 without electromagnet coil 80 to provide power, so that the energy consumption of electromagnet coil 80 is reduced, meanwhile, also reduce the heat of generation.In this approach, when needing to control camera lens movement, the mainboard chip of mobile terminal is powered to electromagnet coil 80, magnetic force between electromagnet coil 80 and permanent magnet 50 provides a driving force to camera lens 60, and when camera lens 60 is moved to setting position, mainboard chip supplies a reverse current to electromagnet coil 80, so that electromagnet coil 80 provides a reversed brake force, i.e. when controlling the movement of camera lens 60, electromagnet coil 80 is only needed to provide a driving force, an and reversed brake force, and when providing driving force, since camera lens 60 and 50 coil of permanent magnet are at any position in liquid, the buoyancy being subject to is identical, and it is equal to the gravity of camera lens 60 and permanent magnet 50, therefore, only need the electric current for supplying very short time to electromagnet coil 80 that driving can be realized The movement of camera lens 60 is got up, also, camera lens 60 no longer needs to provide power after movement is got up.Compared with prior art, electromagnet in the prior art needs to mention always above-mentioned drive scheme
Force overcomes the elastic force of spring, and in the variation with 60 position of camera lens, the elastic force of spring changes, and the electric current of electromagnetism iron supply needs to change at any time.Therefore, the power consumption of electromagnet coil 80 can be significantly reduced using the scheme of the application.
When using another mode, when the structure for realizing that camera lens 60 and electromagnet coil 80 are formed by buoyancy+magnetic force collective effect suspends, at this time, there are certain differences between camera lens 60 and the consitutional density of permanent magnet 50 and the density of liquid, when needing 60 holding position of camera lens, need electromagnet coil 80 to provide certain magnetic force to overcome gravity (density of liquid is less than camera lens 60 and the consitutional density of permanent magnet 50) or buoyancy (density of liquid is greater than camera lens 60 and the consitutional density of permanent magnet 50).Specifically, according to the difference in design between camera lens 60 and the gravity and buoyancy of permanent magnet 50, the power provided needed for voice coil actuator is obtained, the mainboard chip control of mobile terminal is input to required electric current when can be for the power in electromagnet coil 80.Principle in this programme is similar with above-mentioned principle, need to only power in above-mentioned principle to electromagnet coil 80 to be additionally provided the power for maintaining camera lens 60 and permanent magnet 50 to suspend.In the present solution, although electromagnet coil 80 is needed additionally to power, when using the program, due to liquid density can between camera lens 60 and the consitutional density of permanent magnet 50 there are certain difference, the requirement to device fabrication precision is lower.In large-scale production, since camera lens 60 and permanent magnet 50 are in processing, inevitably there are mismachining tolerance and rigging error, and the density of liquid not can guarantee yet it is completely the same, therefore, by the way of this programme, power can be provided by electromagnet coil 80 to carry out an adjustment, guarantee that camera lens 60 and permanent magnet 50 float on a liquid, when there is error, the electric current of supply electromagnet coil 80 need to be only adjusted, convenient for large-scale production.In addition, being directed to above-mentioned scheme, compared with prior art, it is only necessary to the difference between the density of liquid and the consitutional density of camera lens 60 and permanent magnet 50 is in certain range, equally have the effect of reducing heat production.
It can be seen that by the above two different descriptions for realizing that camera lens 60 suspends, in this application, the density of liquid can be identical as camera lens 60 and the consitutional density of permanent magnet 50, there may also be certain differences, in order to reduce the energy consumption of camera module provided by the present application, i.e., reduction quantity of heat production, the density of the body can be used with camera lens 60 and the ratio of the consitutional density of permanent magnet 50 in setting first threshold, specifically, first given threshold of first threshold is 95%~105%.The ratio of such as the two be 95%, 98%, 100%, 102%, 105% arbitrarily between 95%~105% numerical value.
For the liquid in the application, can there are many different selections, both can be single substance, such as distilled water, or solution, the solution are solution known to existing material, can carry out the configuration of solubility according to the actual needs.In addition, the liquid can also be colorless or colored solution.As shown in Figures 2 and 3, in a specific embodiment, liquid is colourless transparent solution (not shown), at this point, positioned at camera lens 60 and imaging sensor 70 between and the sealing eyeglass 40 that is arranged in support plate 21 is optical filter.In this scenario, since liquid uses colourless transparent solution, therefore, it is necessary to an optical filter is arranged between camera lens 60 and imaging sensor 70 to filter.In another specific embodiment, liquid is colored transparent liquid, and when light is irradiated to colored transparent liquid, colored transparent liquid cocoa filters to the light passed through.I.e. by colored transparent liquid as optical filter, so that the sealing eyeglass 40 between camera lens 60 and imaging sensor 70 can use transparent eyeglass.
In addition, can select the liquid of a certain range density for aforesaid liquid, in a specific scheme, the density of liquid is between 0.2~2g/cm3, such as 0.2g/cm3、0.5g/cm3、1g/cm3、1.5g/cm3、2g/cm3Deng arbitrarily between 0.2~2g/cm3Between density.
As a more specific scheme, in order to facilitate the setting of electromagnet coil 80, camera module in this application is also provided with multiple support columns 22, the support column 22 and support plate 21 form a bracket 20, in specific setting, support column and support plate in the bracket 20 are fabricated directly into bracket 20 using integrally formed mode
In specific setting, multiple settings of support column 22 are at 21 edge of support plate and are located in shell 10, and each support
Column 22 is for fixing an electromagnet coil 80.I.e. the setting number of the support column 22 and the electromagnet coil 80 of use limit.And setting position also according to 80 desired position of electromagnet coil depending on.In a specific embodiment, multiple electromagnet coils 80 are uniformly arranged around permanent magnet 50.Convenient to carry out posture regulation to camera lens 60, in a more specific embodiment, the number of electromagnet coil 80 is three or four, as shown in figure 3, Fig. 3 shows the structure using four electromagnet coils 80.Of course, it will be understood that can also be using the different numbers such as five, six.And in specific setting, be spaced between the electromagnet coil 80 of arbitrary neighborhood it is identical, to surround a cylindrical space.The cylindrical space is limited the space of horizontal glass head 60, and when camera lens 60 is suspended in liquid, camera lens 60 is located in the cylindrical space, in order to have good active force between permanent magnet 50 when the energization of electromagnet coil 80.In specific setting, the one side of each electromagnet coil 80 towards permanent magnet 50 is the arcwall face of indent.It is corresponding, it towards the one side of permanent magnet 50 is also arc surface on the support column 22, and multiple arc surfaces are the arcwall face of a cylindrical surface different location.It should be understood that the arcwall face for the indent that foregoing description is formed is only a specific embodiment, in specific setting, the face of non-arc can also be used as into.It with continued reference to Fig. 3, can be seen from figure 3, in a specific embodiment, which is rectangular supporting board 21, and the number of support column 22 is four, and four support columns 22 are located at four edges of support plate 21.
Furthermore, fixation for electromagnet coil 80, in addition among the above by the way of support frame 22 other than, it can also be realized in such a way that electromagnet coil 80 is directly adhesively fixed in support plate 21, specifically, using the edge that electromagnet coil 80 is bonded in support plate 21 directly to be formed to the space for accommodating permanent magnet 50 by viscose glue.
For permanent magnet 50 among the above, both it can also be embedded in 60 periphery of camera lens using two or more permanent magnets, scrabble up a spheroid using one permanent magnet 50 of use among the above.Spheroid is using the principle for the eyeball for imitating human or animal, and resistance is small when moving in liquid environment, and is conducive to do small translation or rotation towards all directions, is convenient for pose adjustment.
In specifically adjustment posture, when needing to adjust the axial position of camera lens 60, by multiple 80 power supply synchronizations of electromagnet coil, driving camera lens 60 is moved along its axial direction, it when needing transverse shifting, can be powered by the electromagnet coil 80 to part, to realize that driving camera lens 60 rotates.In order to facilitate the posture of adjustment camera lens 60, in this application, permanent magnet 50 is ellipse, and the through-hole for being sleeved on camera lens 60 is provided on permanent magnet 50.
More preferably, the posture of camera lens 60 is adjusted for convenience, is provided in support plate 21 in this application multiple for detecting multiple hall devices 90 of 50 posture of permanent magnet.The hall device 90 is connect with substrate 30, and the position of the principle detector lens 60 according to the magnetic field force size of the perception of hall device 90, in a specific embodiment, as shown in Figure 3, the hall device 90 of the application is four, and four hall devices 90 are arranged around permanent magnet 50, the position of camera lens 60 is judged by the magnetic field force of the perception of hall device 90 of different location, and the signal that hall device 90 will test passes to substrate 30, substrate 30 passes to the mainboard chip of mobile terminal again, and then knows the posture that camera lens 60 is presently in.
It can be seen from the above description that, camera module group lens 60 are suspended in sealing space (substrate 30 and shell 10 surround) inside by the application, the maintenance of position and posture is persistently powered without coil or needs lower electricity that can maintain, and substantially reduces the power consumption of voice coil actuator when camera module work；In addition, voice coil actuator fever is mainly the Joule heat generated after coil is powered, the application exchanges the coil of traditional voice coil driving device and 50 position of permanent magnet, and is more advantageous to heat dissipation using electromagnet coil 80 and metal shell assembling；In addition, the lubricating fluid inside voice coil actuator seal cavity is lower than air thermal resistance, the more conducively thermal diffusion between camera lens 60 and voice coil actuator and shell 10 prevents amount of localized heat accumulation from causing eyeglass high temperature distortion effects camera module image quality.
In addition, the mobile terminal includes the camera module and mainboard chip of any of the above-described present invention also provides a kind of mobile terminal, wherein mainboard chip, which is controlled, powers to electromagnet coil to drive camera lens 60 to move or brake camera lens 60.
In addition, control device is also used to when hall device 90 detects that camera lens 60 is moved to setting position when camera module has hall device 90, control powers to electromagnet coil and brakes camera lens 60 or the braking camera lens 60.
It should be understood that mobile terminal in this application can be the common mobile terminal devices such as mobile phone, tablet computer or VR equipment.And in the above scheme, by using the external set-up mode of electromagnet coil 80, facilitate the heat dissipation of electromagnet coil 80, and, it is hydraulically full by using being filled out in shell 10, by the buoyancy of the liquid as the power for overcoming some or all of gravity of camera lens 60 and permanent magnet 50, and when using buoyancy, no matter which position camera lens 60 is in, buoyancy size will not all change, therefore, even if the magnetic force of electromagnet coil 80 and permanent magnet 50 is needed to overcome the power of gravity as offer a part, the electric current of electromagnet coil 80 will not be because of camera lens 60 at the position far from imaging sensor 70, and need to increase electric current, and then reduce energy consumption, improve due in camera module temperature it is excessively high and the case where influence photographic effect.
In a specific embodiment, mainboard chip is also used to when the density of liquid is not equal to 50 consitutional density of camera lens 60 and permanent magnet, electric current needed for control supplies holding 60 position of camera lens to electromagnet coil 80.It is the posture that can guarantee camera lens 60 by a lesser electric current, reduces the quantity of heat production of camera module.
Obviously, those skilled in the art can carry out various modification and variations without departing from spirit and scope to the embodiment of the present application.If then the application is also intended to include these modifications and variations in this way, these modifications and variations of the embodiment of the present application belong within the scope of the claim of this application and its equivalent technologies.
Claims (16)
- A kind of camera module characterized by comprising substrate, support plate, lens assembly, voice coil actuator and shell；Wherein,The support plate setting is on the substrate；The shell and the support plate are tightly connected；The lens assembly includes: imaging sensor and the camera lens for being transmitted to light in described image sensor；The voice coil actuator includes: the permanent magnet being fixedly connected with the camera lens, and the electromagnet coil for surrounding the permanent magnet and being fixedly connected with the support plate, in electromagnet coil power supply, driving force or brake force are provided to the camera lens by the magnetic field formed between the electromagnet coil and the permanent magnet；Described image sensor is arranged between the substrate and the support plate；The camera lens is located in the space that the shell and the sealing plate are formed, and is filled in the shell and provides the liquid of buoyancy to the camera lens and the permanent magnet.
- Camera module as described in claim 1, which is characterized in that the density of the liquid and the camera lens and the ratio of the consitutional density of the permanent magnet are in setting first threshold.
- Camera module as claimed in claim 2, which is characterized in that first given threshold is 95%~105%.
- Camera module as described in claim 1, it is characterized in that, the sealing eyeglass with camera lens cooperation is respectively arranged on the shell and the support plate, the sealing eyeglass is plano lens, and be tightly connected between the support plate and the substrate, the space for accommodating described image sensor is surrounded between the substrate and the support plate.
- Camera module as claimed in any one of claims 1 to 3, which is characterized in that the density of the liquid is between 0.2~2g/cm3。
- Camera module as claimed in any one of claims 1 to 5, which is characterized in that the liquid is colourless transparent solution, and the sealing eyeglass between the camera lens and described image sensor is optical filter.
- Camera module as claimed in any one of claims 1 to 5, which is characterized in that the liquid is colored transparent liquid, and the colored transparent liquid can filter to the light passed through.
- Camera module as described in any one of claims 1 to 7, which is characterized in that the number of the electromagnet coil is multiple, and multiple electromagnet coils are uniformly arranged around the permanent magnet.
- Camera module as claimed in claim 8, which is characterized in that the number of the electromagnet coil is three or four.
- Camera module as described in any one of claims 1 to 9, which is characterized in that the permanent magnet is ellipse, and is provided on the permanent magnet for being set with through-hole on the lens.
- Such as the described in any item camera modules of claim 1~10, which is characterized in that further include setting in the support plate edge and be located at the intracorporal support column of the shell, and each support column is for fixing an electromagnet coil.
- Camera module as claimed in any one of claims 1 to 11, which is characterized in that further include the multiple hall devices for being arranged in the support plate and being used to detect the permanent magnet posture.
- Such as the described in any item camera modules of claim 1~12, which is characterized in that the shell is the shell of Heat Conduction Material production, and each electromagnet coil is compressed with the inner wall of the shell and contacted.
- A kind of mobile terminal, which is characterized in that including the described in any item camera modules of such as claim 1~13 and mainboard chip, wherein the mainboard chip, which is controlled, powers to the electromagnet coil to drive the camera motion or the braking camera lens.
- Mobile terminal as claimed in claim 14, which is characterized in that there is the Hall device in the camera module When part, the control device is also used to when the hall device detects that the camera lens is moved to setting position, and control powers to the electromagnet coil and brakes the camera lens.
- Mobile terminal as claimed in claim 14, it is characterized in that, when the mainboard chip is also used to the density in the liquid not equal to the camera lens and the permanent magnet consitutional density, electric current needed for control keeps the camera lens position to electromagnet coil supply.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710064653 | 2017-02-04 | ||
| CN201710064653X | 2017-02-04 | ||
| PCT/CN2017/081116 WO2018141133A1 (en) | 2017-02-04 | 2017-04-19 | Camera module and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109073989A true CN109073989A (en) | 2018-12-21 |
| CN109073989B CN109073989B (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780024145.7A Active CN109073989B (en) | 2017-02-04 | 2017-04-19 | Camera module and mobile terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109073989B (en) |
| WO (1) | WO2018141133A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110602368A (en) * | 2019-09-29 | 2019-12-20 | 珠海格力电器股份有限公司 | Camera and mobile terminal |
| CN112822374A (en) * | 2021-01-27 | 2021-05-18 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN113114887A (en) * | 2021-04-09 | 2021-07-13 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN113905151A (en) * | 2021-05-18 | 2022-01-07 | 荣耀终端有限公司 | Driving device, camera module and electronic equipment |
| CN114838791A (en) * | 2022-04-01 | 2022-08-02 | 浙江筑工科技有限公司 | High-precision warehousing raw material weighing machine for producing assembly type prefabricated parts |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170280034A1 (en) * | 2016-03-23 | 2017-09-28 | Magna Electronics Inc. | Vehicle vision system camera with enhanced imager and lens assembly |
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| KR20150003312A (en) * | 2012-04-13 | 2015-01-08 | 가부시키가이샤 니콘 | Mobile body device, exposure device, and device production method |
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- 2017-04-19 WO PCT/CN2017/081116 patent/WO2018141133A1/en active Application Filing
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| CN201233464Y (en) * | 2008-07-14 | 2009-05-06 | 华晶科技股份有限公司 | Lens module |
| CN103312232A (en) * | 2012-03-13 | 2013-09-18 | 鸿富锦精密工业（深圳）有限公司 | Magnetic suspension motor |
| US20140086568A1 (en) * | 2012-09-25 | 2014-03-27 | Hoya Corporation | Imaging apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110602368A (en) * | 2019-09-29 | 2019-12-20 | 珠海格力电器股份有限公司 | Camera and mobile terminal |
| CN112822374A (en) * | 2021-01-27 | 2021-05-18 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN113114887A (en) * | 2021-04-09 | 2021-07-13 | 维沃移动通信有限公司 | Camera module and electronic equipment |
| CN113905151A (en) * | 2021-05-18 | 2022-01-07 | 荣耀终端有限公司 | Driving device, camera module and electronic equipment |
| CN114838791A (en) * | 2022-04-01 | 2022-08-02 | 浙江筑工科技有限公司 | High-precision warehousing raw material weighing machine for producing assembly type prefabricated parts |
| CN114838791B (en) * | 2022-04-01 | 2023-07-25 | 浙江筑工科技有限公司 | High-precision warehousing raw material weighing machine for producing prefabricated parts |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018141133A1 (en) | 2018-08-09 |
| CN109073989B (en) | 2020-12-01 |
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