CN110505391A - Reflecting element, camera module and terminal device - Google Patents
Reflecting element, camera module and terminal device Download PDFInfo
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- CN110505391A CN110505391A CN201910944932.4A CN201910944932A CN110505391A CN 110505391 A CN110505391 A CN 110505391A CN 201910944932 A CN201910944932 A CN 201910944932A CN 110505391 A CN110505391 A CN 110505391A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/682—Vibration or motion blur correction
- H04N23/685—Vibration or motion blur correction performed by mechanical compensation
Abstract
This application involves a kind of reflecting element, camera module and terminal devices.Reflecting element is provided with cavity, and reflecting element includes: electrode, and electric field can be formed in cavity；And first liquid and second liquid, first liquid and second liquid it is immiscible be set to cavity, reflecting interface is capable of forming between first liquid and second liquid, electrode can drive at least one of the first liquid and second liquid to flow, to change position of the reflecting interface in cavity, ambient light is able to enter cavity, and is reflexed to outside reflecting element by reflecting interface.In above-mentioned reflecting element, a reflecting interface with high reflectivity is capable of forming between the first liquid and second liquid.Expected electric field can be formed in the cavities by the voltage that control applies on the electrode, heeling condition of the reflecting interface in cavity is controlled with this, and then incident ray can be made to reflect towards anticipated orientation.
Description
Technical field
This application involves electronic equipments, more particularly to a kind of reflecting element, camera module and terminal device.
Background technique
Currently, generally coil and rib can be arranged in the object side of lens group in the common camera module with stabilization function
Mirror, by being powered coil to act on the magnet on prism and prism is driven to rotate, to control incident ray by prismatic reflection
Direction, stabilization function is realized with this.But above-mentioned camera module is inevitably present that structure is complicated and bulky asks
Topic.
Summary of the invention
The embodiment of the present application provides a kind of reflecting element, camera module and terminal device, to solve common to have stabilization
Structure is complicated present in the camera module of function and bulky problem.
A kind of reflecting element is provided with cavity, and the reflecting element includes:
Electrode can form electric field in the cavity；And
First liquid and second liquid, first liquid and the second liquid it is immiscible be set to the sky
Chamber, is capable of forming reflecting interface between first liquid and the second liquid, the electrode can drive first liquid
At least one of body and the second liquid flowing, to change position of the reflecting interface in the cavity, environment light
Line is able to enter the cavity, and is reflexed to outside the reflecting element by the reflecting interface.
In above-mentioned reflecting element, due to immiscible, the two between first liquid and the second liquid
Between be capable of forming an interface, which is reflecting interface with high reflectivity, the reflecting interface can efficiently by
Incident ray reflection.At this point, expection side just can be formed in the cavity by the voltage that control applies on the electrodes
To and expected intensity electric field, drive first liquid and the second liquid to flow in the cavity with this, make described
First liquid and the second liquid in cavity are maintained at desired location, to control the reflecting interface in the sky
Inclined direction and tilt angle in chamber, and then incident ray can be made to reflect towards anticipated orientation.
The reflecting element includes shell in one of the embodiments, and the shell includes upper wall, lower wall and side wall,
The upper wall and the lower wall are connect with the side wall respectively, and the upper wall, the lower wall and the side wall are described around being formed
Cavity, the electrode are set at least one of the upper wall, the lower wall and described side wall.
The reflecting element includes any of the following in one of the embodiments:
The upper wall and the lower wall are respectively arranged with the electrode；
The upper wall and the side wall are respectively arranged with the electrode；
The lower wall and the side wall are respectively arranged with the electrode.
The electrode includes first electrode and second electrode in one of the embodiments, the first electrode and described
Second electrode is arranged in the side wall, and is located at the opposite two sides of the shell.
The shell is provided with hydrophobic layer in one of the embodiments, and the hydrophobic layer is set to the interior of the upper wall
On at least one of inner wall of wall surface, the inner wall of the lower wall and the side wall.
The upper wall and the side wall have at least one of visible light and infrared light in one of the embodiments,
High transmittance.
In one of the embodiments, the density ratio of the density of first liquid and the second liquid 0.8~
Between 1.2.
The reflecting element comprises at least one of the following in one of the embodiments:
First liquid has high transmittance to visible light, and the second liquid has high reflectance to visible light；
First liquid has high transmittance to infrared light, and the second liquid has high reflectance to infrared light.
The reflecting element comprises at least one of the following in one of the embodiments:
First liquid is ionic liquid；
The second liquid is oil-based liquid.
A kind of camera module, including reflecting element described in lens group, imaging sensor and any of the above-described embodiment, institute
It states reflecting element and is set to side of the lens group far from described image sensor, the reflecting element can be by incident ray
Reflex to the lens group and described image sensor.
After above-mentioned reflecting element, the camera module can apply voltage on the electrodes in institute by control
The electric field for forming anticipated orientation and expected intensity in cavity is stated, drives first liquid and the second liquid in described with this
It is flowed in cavity, so that first liquid and the second liquid in the cavity is maintained at desired location, to control institute
Inclined direction and tilt angle of the reflecting interface in the cavity are stated, and then incident ray can be made to reflect towards anticipated orientation.
That is, the camera module can control the light for being incident to the reflecting element by the voltage that control applies on the electrodes
Reflection direction, so that the reflecting interface can be quick when the camera module is shaken during shooting
Adjustment compensates the optical path being displaced by shake with changing the reflection direction of incident ray, realizes stabilization function with this
Energy.The camera module no setting is required voice coil motor, magnet etc. is used for the element of mechanical movement as a result, need to only pass through circuit control
The heeling condition for making the reflecting interface is just able to achieve stabilization function, thus have structure it is simple, it is small in size, be hardly damaged, resist
The features such as magnetic disturbance ability is strong.
The reflecting element includes the plane of incidence and exit facet in one of the embodiments, the plane of incidence and it is described go out
Penetrate the same surface or different surfaces that face is the reflecting element.
A kind of terminal device, including camera module described in casing and any of the above-described embodiment, the camera module is set
It is placed in the casing.
After above-mentioned camera module, the terminal device can be by carrying out circuit control to the reflecting element to change
The heeling condition at the interface between first liquid and the second liquid, just can in the camera module shake displacement after
Optical path compensate, to realize anti-shake effect.The camera module no setting is required voice coil motor, magnet etc. is used for mechanical movement
Element, therefore have the characteristics that simple, small in size, the diamagnetic interference performance of structure is strong, set so as to reduce in the terminal
Taking up space in standby, is conducive to the Miniaturization Design of the terminal device, and reduce manufacturing cost.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the schematic diagram of reflecting element in one embodiment of the application；
Fig. 2 is the schematic diagram of reflecting element in one embodiment of the application；
Fig. 3 is the schematic diagram of reflecting element in one embodiment of the application；
Fig. 4 is the top view of reflecting element and lens group in one embodiment of the application；
Fig. 5 is the schematic diagram of camera module in one embodiment of the application；
Fig. 6 is the schematic diagram of camera module in one embodiment of the application；
Fig. 7 is the schematic diagram of camera module in one embodiment of the application；
Fig. 8 is the schematic diagram of camera module in one embodiment of the application；
Fig. 9 is the schematic diagram of terminal device in one embodiment of the application.
Specific embodiment
The application in order to facilitate understanding is described more fully the application below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the application.But the application can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to disclosure of this application more saturating
It is thorough comprehensive.
Refer to including but not limited to as " terminal device " as used herein via following any one or several connection sides
The device that can receive and/or send signal of communication of formula connection:
(1) via Wireline connection type, such as via Public Switched Telephone Network (Public Switched
Telephone Networks, PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable,
Direct cable connection；
(2) via wireless interface mode, such as cellular network, WLAN (Wireless Local Area
Network, WLAN), the digital TV network of such as DVB-H network, satellite network, AM-FM broadcasting transmitter.
It is configured to that " mobile terminal " can be referred to as by the terminal device of radio interface communication.The example of mobile terminal
Including but not limited to following electronic device:
(1) satellite phone or cellular phone；
It (2) can be with the personal communication system of combination cellular radio telephone and data processing, fax and communication ability
System (Personal Communications System, PCS) terminal；
(3) radio telephone, pager, the Internet/intranet access, Web browser, memo pad, calendar, equipped with complete
Personal digital assistant (the Personal of ball positioning system (Global Positioning System, GPS) receiver
Digital Assistant, PDA)；
(4) conventional laptop and/or palmtop receiver；
(5) conventional laptop and/or hand held radiotelephone transceiver etc..
In the common electronic equipment with camera function, lead to image blur because hand shakes when to overcome shooting
The problem of, the elements such as prism, magnet, voice coil motor are typically provided in camera module to change the optical path of incident ray, to trembling
Optical path after dynamic compensates, to realize anti-shake effect.Specifically, by the coil magnetic field in control voice coil motor to rib
Magnet generation effect on mirror, and then prism rotation is driven, the optical path adjustment to incident ray is realized with this.But in this set
Under, due to being provided with the element of mechanical movement, inevitably structure is complicated for camera module, volume is excessive, easy to damage
The problems such as, lead to electronic equipment there are production costs that higher, camera module service life is shorter, is difficult to realize miniaturization.
For this purpose, embodiments herein provides a kind of reflecting element, camera module and terminal device to solve the above problems.
With reference to Fig. 1, the reflecting element 10 in one embodiment of the application includes shell 100, electrode 200,310 and of the first liquid
Second liquid 320.Shell 100 includes upper wall 110, lower wall 120 and side wall 130, upper wall 110 and lower wall 120 respectively with side wall 130
Both ends connection, upper wall 110, lower wall 120 and side wall 130 are jointly around the cavity 140 for forming a closure.First liquid 310
With second liquid 320 it is immiscible be set to cavity 140, and fill up cavity 140.First liquid 310 is positively charged ion
Liquid, second liquid 320 is uncharged oil-based liquid, and the inner wall of shell 100 is non-conductive, thus 310 energy of the first liquid
It is enough to be steadily present in cavity 140 with charged species.In addition, the first liquid 310 has high transmittance, and the second liquid to visible light
Body 320 has high reflectance can between the first liquid 310 and second liquid 320 due to immiscible relationship visible light
Reflecting interface 330 is formed, incident ray (such as visible light) will be by second when entering the first liquid 310 and reaching reflecting interface 330
Liquid 320 reflects, and reflection direction depends on inclined direction and tilt angle of the reflecting interface 330 in cavity 140.Certainly, when
For when acting on infrared light, the first liquid 310 has a high transmittance to infrared light for reflecting element 10 in some embodiments, and the
Two liquid 320 have high reflectance to infrared light.In embodiments herein, certain material has visible or infrared light
High transmittance is believed that the material can penetrate 70% or more visible or infrared light；And certain material is to visible light or infrared
There is light high reflectance to be believed that the material can reflect 70% or more visible or infrared light.Above it should be noted that
The high transmission of visible or infrared light is not needed to all wave band high transmissions in visible light wave range or infrared band, it can also
To be only to subband high transmission therein.On the other hand, the first liquid 310 in some embodiments may be not charged
Oil-based liquid, and second liquid 320 is the ionic liquid of electrification, and electrode 200 can drive second liquid 320；Or first
Liquid 310 and second liquid 320 are electrically identical ionic liquid, and electrode 200 can drive the first liquid 310 simultaneously at this time
With second liquid 320.For example, the first liquid 310 and second liquid 320 are positively charged ionic liquid, and second liquid 320
Charge density less than the first liquid 310 charge density.Certainly, the oil-based liquid in some embodiments can also charge.
Electrode 200 is set on shell 100 and can form electric field in cavity 140, drives the first liquid 310 to exist with this
It is flowed in cavity 140, and drives second liquid 320.Electrode 200 includes first electrode 210 and second electrode 220, first electrode
210 and second electrode 220 be arranged in side wall 130, and be located at the opposite two sides of shell 100, and be arranged at side wall 130
Outside wall surface is capable of forming potential difference and is formed in cavity 140 along anticipated orientation between first electrode 210 and second electrode 220
With the electric field of expected intensity, the first liquid 310 is driven with this, and drives second liquid 320 indirectly.First electrode 210 and second
Electrode 220 is ito film, or may be the material that metal grill etc. has conductive capability.In some embodiments, in addition to setting
It sets on shell 100, electrode 200 can also be spaced with shell 100 to be arranged, as long as electric field can be formed in cavity 140.
In addition, when light is needed by first electrode 210 or second electrode 220, first electrode 210 or second electrode
220 should select the material for having high transmittance to this kind of light, avoid light when by electrode 200 by biggish damage
Consumption.Fig. 1 and Fig. 2 is referred to together, by the potential difference between control first electrode 210 and second electrode 220 to control cavity 140
In electric field, the first liquid 310 and second liquid 320 can be driven and be limited in desired location in cavity 140, and first
Reflecting interface 330 is formed by between liquid 310 and second liquid 320 can become flat under electric field action and keep being expected
Heeling condition (i.e. expected inclined direction and tilt angle), thus will be by anti-when incident ray reaches reflecting interface 330
The heeling condition in firing area face 330 influences, and reflects at reflecting interface 330 towards anticipated orientation.That is, by adjusting electrode is applied to
Voltage on 200, reflecting interface 330 can switch between different heeling conditions, so as to control the anti-of incident ray
Penetrate direction.
To stablize the initial position and initial contact angle of the first liquid 310 and second liquid 320 in cavity 140, side
The inner wall of wall 130 is provided with hydrophobic layer 400, and hydrophobic layer 400 has hydrophobicity to the first liquid 310, and to second liquid 320
It is affinity, and hydrophobic layer 400 selects insulating materials preparation.Hydrophobic layer 400 is set to the inner wall of upper wall 110, lower wall 120
Inner wall and side wall 130 at least one of inner wall on.Hydrophobic layer 400 can act on the first liquid 310 and the second liquid
Body 320, when stopping applying voltage to electrode 200, the electric field in cavity 140 also disappears therewith, the first liquid 310 and the second liquid
Body 320 can be restored to initial position under the action of hydrophobic layer 400, to promote the first liquid 310 and second liquid 320
Controllability.In addition, the boundary under the mating reaction of electrode 200 and hydrophobic layer 400, between the first liquid 310 and second liquid 320
Face can stablize change.Further, in some embodiments, electrode 200 may also be arranged on the inner wall of shell 100, but this
When should electrode 200 close to the side of the first liquid 310 and second liquid 320 setting insulation hydrophobic layer 400, prevent electrode
200 directly contact with the charged liquid in cavity 140, at this point, electrode 200 can be closer to the first liquid 310 and second liquid
320, and the bigger electric field of intensity can be formed in cavity 140, so as to more accurate and rapidly drive the first liquid
310, make reflecting interface 330 quickly and steadily switches to preset state.
In this embodiment, upper wall 110 and side wall 130 have high transmittance to visible light respectively, thus incident ray energy
It is enough to be incident to cavity 140 from upper wall 110, and be emitted after being reflected by reflecting interface 330 from side wall 130, upper wall 110 is outer at this time
Wall surface is considered as the plane of incidence 121, and the outside wall surface of side wall 130 is considered as exit facet 131.Certainly, in other embodiments
In, the plane of incidence 121 and exit facet 131 of reflecting element 10 can be the same surface, such as incident ray can be from upper wall 110
It is incident to cavity 140, is emitted again from upper wall 110 after being reflected at reflecting interface 330, is i.e. the outside wall surface of upper wall 110 is simultaneously
The plane of incidence 121 and exit facet 131.
Make due to density difference in gravity to reduce the first liquid 310 and second liquid 320 as far as possible when being shaken
It is moved with the otherness of lower generation, makes the flowing of the first liquid 310 and second liquid 320 in cavity 140 as far as possible only by electricity
Field influences, so that in this embodiment, the density of the first liquid 310 and second liquid 320 is set as identical, thus, work as reflection
After the heeling condition at interface 330 is stablized, the shaking of reflecting element 10 will be difficult to that reflecting interface 330 is made to change heeling condition, because
The stability that reflecting element 10 reflects incident ray is effectively promoted in this, keeps the reflection direction of incident ray more controllable.
It should be noted that the density of two kinds of liquid be difficult to accurately control in practice it is identical, therefore in some embodiments,
The ratio of the density of the density and second liquid 320 of first liquid 310 can be the arbitrary value between 0.8~1.2, such as can
To be 0.85,0.90,0.95,1.05,1.10,1.15 or 1.20.
In above-mentioned reflecting element 10, due to immiscible, the two between the first liquid 310 and second liquid 320
Between be capable of forming an interface, which is reflecting interface 330 with high reflectivity, and reflecting interface 330 can be efficiently
Incident ray is reflected.At this point, be applied to the voltage on electrode 200 by control just can form expection side in cavity 140
To and expected intensity electric field, drive the first liquid 310 and second liquid 320 to flow in cavity 140 with this, make cavity 140
In the first liquid 310 and second liquid 320 be maintained at desired location, to control the inclining in cavity 140 of reflecting interface 330
Tilted direction and tilt angle, and then incident ray can be made to reflect towards anticipated orientation.When reflecting element 10 works, it should control and apply
The voltage being added on electrode 200 enables the liquid to incident ray (ambient light) high transmission to be driven to close to cavity 140
In close to the position of the plane of incidence 121, and make the liquid to incident ray high reflection far from the plane of incidence 121, to work as incident ray
When being incident to cavity 140, incident ray can first pass through transparency liquid, reflecting interface 330 then be reached, finally by reflecting interface
330 reflex to outside reflecting element 10.
With reference to Fig. 3, in some embodiments, in order to form more diverse electric field in cavity 140 so that the first liquid 310
It can be driven to more multiposition with second liquid 320, and then increase the selectivity to the heeling condition of reflecting interface 330, electricity
Pole 200 is set at least one of upper wall 110, lower wall 120 and side wall 130.Upper wall 110 in one of the embodiments,
It is respectively arranged with electrode 200 with lower wall 120, and the electrode 200 on each wall surface can be independently controlled.More than, pass through circuit control
The mode of system adjusts the voltage for the electrode 200 being applied on different wall surfaces, and the electric field strength and direction in cavity 140 can be had
It imitates and diversely controls, the first liquid 310 and second liquid 320 is enable to be driven to more desired locations in cavity 140,
And then enable reflecting interface 330 toward more direction and angle tilt, so that incident ray is reflected toward more direction.
The structure that Fig. 3 is presented is specifically referred to, is provided with first electrode on side wall 130 in one of the embodiments,
210 and second electrode 220, first electrode 210 and second electrode 220 are located at the opposite two sides of shell 100.110 He of upper wall
Lower wall 120 is respectively arranged with third electrode 230 and the 4th electrode 240.At this point, electrode 200 includes the 210, second electricity of first electrode
Pole 220, third electrode 230 and the 4th electrode 240, but for the convenience of description, first electrode 210, second electrode 220, third
Electrode 230 and the 4th electrode 240 can be described as electrode 200.First electrode 210, third electrode 230, upper wall 110 and with
The wall surface of three electrodes 230 connection has high transmittance to incident ray, and incident ray can be through third electrode 230 and upper wall
110 are incident to cavity 140, are being emitted after the reflection of reflecting interface 330 toward first electrode 210.In first electrode 210 and the second electricity
After applying voltage between pole 220, the transverse electric field for being approximately perpendicular to the axis 101 of shell 100 is capable of forming in cavity 140；And
After applying voltage between third electrode 230 and the 4th electrode 240, it is capable of forming in cavity 140 and is approximately parallel to axis 101
Longitudinal electric field, by controlling the intensity of transverse electric field and longitudinal electric field respectively, the electric field in cavity 140 can be in more direction
Distribution.In addition, can also be directly between side wall 130 and the electrode 200 of upper wall 110 or the electrode of side wall 130 and lower wall 120
Apply voltage between 200, directly to form tilting electric field in cavity 140, to make the first liquid 310 and second liquid 320
Flowing it is more controllable.In some embodiments, electrode 200 can be provided only on side wall 130, be provided only on upper wall 110 and side wall
130, it is provided only on lower wall 120 and side wall 130, or is provided only on upper wall 110 and lower wall 120, as long as the electrode on shell 100
Potential difference is capable of forming between 200 to form electric field in cavity 140.
Further, with reference to Fig. 4, in some embodiments, it is respectively arranged with electrode 200 on each wall surface of side wall 130,
Electrode 200 on each wall surface can be independently controlled.At this point, can sufficiently side wall 130 wall surface predominance so that cavity 140
In electric field the position of the first liquid 310 and second liquid 320 in cavity 140 can be made to have more along more directional spredings
Multiple choices, and then reflecting interface 330 is enable to tilt toward more direction.It should be noted that in order to intuitively illustrate, in Fig. 4
The structures such as upper wall 110, lower wall 120, the first liquid 310 and second liquid 320 are not showed.In addition, in Fig. 4 and following figure
Lens group 500 only provides example image, and the lens numbers and face type in actual lens group 500 are not limited to as shown in the figure.
With continued reference to Fig. 4, shell 100 is in rectangular configuration in one of the embodiments, and side wall 130 at this time possesses four
A wall surface is respectively arranged with first electrode 210, second electrode 220, the 5th electrode 250 and the 6th electrode 260 on four wall surfaces.
After applying voltage between first electrode 210 and second electrode 220, it is capable of forming in cavity 140 and is approximately perpendicular to axis 101
Transverse electric field；After applying voltage between the 5th electrode 250 and the 6th electrode 260, near vertical is also capable of forming in cavity 140
In the transverse electric field of axis 101, and the transverse electric field generated between the transverse electric field and first electrode 210 and second electrode 220
Direction near vertical, by controlling the intensity of two transverse electric fields respectively, the electric field in cavity 140 can be in more direction
Distribution.It should be noted that charge accumulated in adjacent electrode 200 may interfere mutually, to cause cavity 140
In field distribution and irregular, but this irregular field distribution can be by one by one in difference after reflecting element 10 is made
Electrode 200 between apply voltage to be recorded, and can finally obtain corresponding between voltage and irregular field distribution
Relationship, can be directly in applying corresponding voltage value on corresponding electrode 200 to obtain expected reflection during subsequent operation
Effect.For example, whether being anticipated orientation according to the reflection direction of test incident ray, to obtain the voltage under the reflective condition
Value, if incident ray need to be made to reflect in the direction during subsequent operation, applies the voltage value between respective electrode 200
.
In some embodiments, to enable the electric field in cavity 140 to be distributed along anticipated orientation, shell 100 is in vertical axis
The cross sectional shape of line 101 can be any one polygon, such as rectangular, rectangle, diamond shape, regular hexagon, octagon, no
Equilateral hexagons, unequal-sided octagon etc., settable electrode 200 on any wall surface, and 200 energy of electrode on each wall surface
It is enough independently controlled, as long as allowing the electrode 200 on wall surface that can form the electric field along anticipated orientation in cavity 140.
For the purposes of keeping the field distribution in cavity 140 more diversified, in some embodiments, on shell 100
Electrode 200 can cover entire wall surface, or can also only cover the partial region of wall surface, specifically can only cover locating wall surface
50%~95% area.For example, the third electrode 230 for being located at upper wall 110 can only cover 50% area of upper wall 110.
In addition, in some embodiments, electrode 200 can also in the distributing position on upper wall 110, lower wall 120 or side wall 130
To be various.Specifically, when electrode 200 is not enough to cover locating wall surface, electrode 200 can be about the central symmetry of wall surface
Setting；Alternatively, electrode 200 can also be arranged along the edge of wall surface, i.e. the edge of the edge projection of the side of electrode 200 and wall surface
It is projected on the direction of parallel to the axis 101 or vertical axis 101 and is overlapped.
In some embodiments, electrode 200 includes multiple 200 regions of electrode that can be independently controlled, adjacent electrode 200
Insulation set between region.Such as in one embodiment, first electrode 210 and second electrode 220 respectively include multiple electrodes
200 regions, due between 200 region of electrode on each electrode 200 can independent control, so as to the portion in first electrode 210
Apply voltage between 200 region of partial electrode on 200 region of sub-electrode and second electrode 220, in these 200 regions of electrode
Between form electric field.Multiple combinations are capable of forming between 200 region of multiple electrodes on Different electrodes 200, by a variety of groups
Apply voltage between 200 region of electrode of conjunction, the electric field in a variety of directions is capable of forming in cavity 140, increases by 310 He of the first liquid
Distribution diversity of the second liquid 320 in cavity 140.
It is located at during the electrode 200 on a certain wall surface by center to edge direction successively includes in one of the embodiments,
Between 200 region of 200 region of electrode, 200 region of transition electrode and edge electrodes, 200 region of target is in rectangle and intermediate electricity
The center in 200 region of pole is Chong Die with the wall surface center of locating side wall 130 or is almost overlapped, and 200 region of transition electrode is around centre
The setting of 200 region of electrode, and 200 region of edge electrodes is arranged around 200 region of transition electrode.Pass through the modes such as shield, insulate
Make 200 region of target, 200 region of transition electrode and 200 region of edge electrodes that electric connection be not present between any two, it is intermediate
200 region of electrode, 200 region of transition electrode and 200 region of edge electrodes can be independently controlled.200 region of target, mistake
Cross 200 region of electrode and 200 region of edge electrodes can respectively with first electrode 210 (can certainly on other wall surfaces
Electrode 200) different potential differences is generated, the electric field of varying strength and/or different directions, In are formed in cavity 140 respectively
Under these electric field actions, the first liquid 310 can flow along more anticipated orientations and be limited in desired location.In addition, first
Electrode 210, which can be grounded, to be arranged with 200 region of target, 200 region of transition electrode and edge electrodes with second electrode 220
200 regions cooperation, to form electric field in cavity 140.In some embodiments, first electrode 210 is by center to edge direction
200 region of 200 region of target, 200 region of transition electrode and edge electrodes can also be set gradually, similarly, is located at other
Electrode 200 on wall surface can also be arranged in the same manner it is multiple being capable of 200 region of independent control electrode.
With reference to Fig. 5, in some embodiments, since reflecting element 10 can change incident ray by way of circuit control
Reflection direction, therefore reflecting element 10 can be used as stabilization element be arranged in camera module 30, with to the optical path of shake carry out
Compensation.Specifically, camera module 30 includes reflecting element 10, lens group 500 and imaging sensor 600, and reflecting element 10 is arranged
In the object side of lens group 500, the image side of lens group 500 is arranged in imaging sensor 600.In one embodiment, reflecting element
The light inlet of 10 131 face lens group 500 of exit facet, thus when incident ray enters sky from the upper wall 110 of reflecting element 10
Chamber 140 and after reaching reflecting interface 330, light can be reflected by reflecting interface 330 and be emitted to lens group 500 from side wall 130
In.Imaging sensor 600 can be CCD (Charge Coupled Device, charge-coupled device) or CMOS
(Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductor).
Specifically, hand shake can usually occur in shooting process for user to drive the shake (reference of camera module 30
Turned about the X axis in Fig. 5), at this point, the scenery light to be shot will be with respect to 121 run-off the straight of the plane of incidence, through reflecting interface originally
After 330 reflect and adjusted by lens group 500, the light after shake will not be before the focus on imaging sensor 600 will shake relatively
The position of focus shift, lead to be ultimately imaged picture thickening.With further reference to Fig. 6, when camera module 30 occurs
When shake, by obtaining jitter direction using elements such as gyroscopes, then is controlled by way of circuit control and be applied to electrode 200
On voltage, so that reflecting interface 330 is adjusted to expected heeling condition, so that the opposite plane of incidence 121 tilts due to shake
Incident ray can change optical path direction after reflection, enable most finally the focus on imaging sensor 600 with do not shake
The phenomenon that preceding focal position is same or similar, realizes optical path compensation with this and mitigates imaging fuzzy pictures.
After above-mentioned reflecting element 10, camera module 30 can be by controlling the voltage being applied on electrode 200 in sky
The electric field that anticipated orientation and expected intensity are formed in chamber 140, drives the first liquid 310 and second liquid 320 in cavity 140 with this
Middle flowing makes the first liquid 310 and second liquid 320 in cavity 140 be maintained at desired location, to control reflecting interface
330 inclined direction and tilt angle in cavity 140, and then incident ray can be made to reflect towards anticipated orientation.That is, camera shooting mould
Group 30 can control the reflection direction for being incident to the light of reflecting element 10 by the voltage that control is applied on electrode 200, from
And when camera module 30 is shaken during shooting, reflecting interface 330 can be readily adjusted to change incident light
The reflection direction of line, and then the optical path being displaced by shake is compensated, stabilization function is realized with this.Camera module as a result,
30 no setting is required voice coil motor, magnet etc. are used for the element of mechanical movement, need to only pass through the inclination of circuit control reflecting interface 330
State is just able to achieve stabilization function, thus have the characteristics that structure it is simple, it is small in size, be hardly damaged, diamagnetic interference performance it is strong.
In some embodiments, camera module 30 is zoom mould group, i.e., opposite can move between the lens in lens group 500
It is dynamic.At this point, camera module 30 needs to reserve biggish space on the optical axis direction of lens group 500 so that lens are mobile, therefore,
By using above-mentioned reflecting element 10, periscopic can be constituted between reflecting element 10 and lens group 500 and imaging sensor 600
Camera module, incident ray can be reflected onto lens group 500 and imaging sensor 600, applied by reducing
The thickness of equipment.
In some embodiments, the reflecting element 10 that 500 object side of lens group is arranged in can be in a variety of arrangement forms, such as
In the above-described embodiments, the plane of incidence 121 of reflecting element 10 is located at upper wall 110, and exit facet 131 is located at side wall 130, at this time on
Wall 110 and side wall 130 have high transmittance at least one of visible light and infrared light.That is, the incidence in some embodiments
Face 121 and exit facet 131 are the different surfaces of reflecting element 10.
And in further embodiments, the same surface of the plane of incidence 121 and exit facet 131 or reflecting element 10.
It should be noted that the surface of reflecting element 10 can refer to the surface (can be any wall surface) of shell 100, or can also refer to
The surface of electrode 200, and the plane of incidence 121 and exit facet 131 can be defined as surface (such as upper wall 110, lower wall 120 of shell 100
Or the wall surface of side wall 130), it also may be defined as the surface of electrode 200.
To further simplify the structure, in some embodiments, electrode 200 can directly serve as a part of shell 100, example
It such as can be used as any one in the upper wall 110, lower wall 120 or side wall 130 of shell 100.But when electrode 200 serves as shell
When 100 a part, insulating materials should be set between electrode 200 and the first liquid 310 and second liquid 320, prevent electrode 200
It is directly contacted with the first liquid 310 and second liquid 320, insulating materials can be plastic base or hydrophobic layer 400.
With specific reference to Fig. 7, on the plane of incidence 121 of reflecting element 10 and exit facet 131 be in one of the embodiments,
The wall surface of wall 110, that is, incident ray is incident to cavity 140 from upper wall 110, again from upper wall 110 after the reflection of reflecting interface 330
It is emitted to lens group 500, the extended line of the optical axis of lens group 500 passes through upper wall 110 at this time.At this point, need to only make in shell 100
Wall 110 has high transmittance at least one of visible light and infrared light.
Fig. 7 and Fig. 8 is referred to together, it is similar with above-mentioned regulative mode, when the camera module 30 that Fig. 7 is presented is in shooting process
In when encountering shake, by adjusting the voltage being applied on electrode 200, change the heeling condition of reflecting interface 330 to incidence
Optical path to the light of lens group 500 is adjusted, to compensate to optical path.
In some embodiments, camera module 30 can be used as the mould group taken pictures to normal color scene.In other implementations
In example, camera module 30 also can be used as infrared identification mould group, only infrared light need to be enable to enter cavity 140 in the form of high transmission
And reflecting element 10 is reflected by reflecting interface 330.When camera module 30 is as infrared identification mould group, camera module 30
It can be used for receiving the infrared signal of 3D structure light or TOF (Time of flight).
With reference to Fig. 9, a kind of terminal device 40 is additionally provided in some embodiments of the present application, terminal device 40 includes casing
And the camera module 30 in above-mentioned each implementation, camera module 30 are fixed on casing.Terminal device 40 can be smart phone, pen
Remember this computer, wearable device etc..Camera module when camera module 30 is set in smart phone, in some embodiments
30 can be used as preposition camera module 30, postposition camera module 30, lifting camera module 30 of smart phone etc., and terminal is set at this time
Standby 40 casing can be considered that center, camera module 30 are installed on the center of smart phone.It is incident by using camera module 30
Light can be by reflecting element 10 to reflex to lens group 500 and imaging sensor 600 close to 90 ° of angle, to image mould
Group 30 is capable of forming periscopic structure in terminal device 40.Particularly, when camera module 30 is zoom mould group, optical path changes
Change can make the optical axis of lens group 500 perpendicular to the direction of light incidence terminal device 40, to greatly reduce terminal device
40 thickness.
After above-mentioned camera module 30, terminal device 40 can be by carrying out circuit control to reflecting element 10 to change the
The heeling condition at the interface between one liquid 310 and second liquid 320, just can be to the optical path after shake displacement in camera module 30
It compensates, to realize anti-shake effect.No setting is required voice coil motor, the magnet etc. of camera module 30 is used for the element of mechanical movement,
Therefore have the characteristics that simple, small in size, the diamagnetic interference performance of structure is strong, so as to reduce occupying in terminal device 40
Space is conducive to the Miniaturization Design of terminal device 40, promotes anti-shudder performance, and reduce manufacturing cost.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to claim therefore cannot be interpreted as.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (12)
1. a kind of reflecting element, which is characterized in that be provided with cavity, and the reflecting element includes:
Electrode can form electric field in the cavity；And
First liquid and second liquid, first liquid and the second liquid it is immiscible be set to the cavity, institute
It states and is capable of forming reflecting interface between the first liquid and the second liquid, the electrode can drive first liquid and institute
The flowing of at least one of second liquid is stated, to change position of the reflecting interface in the cavity, ambient light can
It is reflexed to outside the reflecting element into the cavity, and by the reflecting interface.
2. reflecting element according to claim 1, which is characterized in that including shell, the shell include upper wall, lower wall and
Side wall, the upper wall and the lower wall are connect with the side wall respectively, and the upper wall, the lower wall and the side wall are surrounded and formed
The cavity, the electrode are set at least one of the upper wall, the lower wall and described side wall.
3. reflecting element according to claim 2, which is characterized in that include any of the following:
The upper wall and the lower wall are respectively arranged with the electrode；
The upper wall and the side wall are respectively arranged with the electrode；
The lower wall and the side wall are respectively arranged with the electrode.
4. reflecting element according to claim 2, which is characterized in that the electrode includes first electrode and second electrode,
The first electrode and the second electrode are arranged in the side wall, and are located at the opposite two sides of the shell.
5. reflecting element according to claim 2, which is characterized in that the shell is provided with hydrophobic layer, the hydrophobic layer
It is set at least one of inner wall of the inner wall of the upper wall, the inner wall of the lower wall and the side wall.
6. reflecting element according to claim 2, which is characterized in that the upper wall and the side wall are to visible light and infrared
At least one of light has high transmittance.
7. reflecting element according to claim 1, which is characterized in that the density of first liquid and the second liquid
Density ratio between 0.8~1.2.
8. reflecting element according to claim 1, which is characterized in that comprise at least one of the following:
First liquid has high transmittance to visible light, and the second liquid has high reflectance to visible light；
First liquid has high transmittance to infrared light, and the second liquid has high reflectance to infrared light.
9. reflecting element according to claim 1, which is characterized in that comprise at least one of the following:
First liquid is ionic liquid；
The second liquid is oil-based liquid.
10. a kind of camera module, which is characterized in that including described in lens group, imaging sensor and any one of claim 1 to 9
Reflecting element, the reflecting element is set to side of the lens group far from described image sensor, the reflecting element
Incident ray can be reflexed to the lens group and described image sensor.
11. camera module according to claim 10, which is characterized in that the reflecting element includes the plane of incidence and outgoing
Face, the plane of incidence and the exit facet are same surface or the different surfaces of the reflecting element.
12. a kind of terminal device, which is characterized in that described to take the photograph including camera module described in casing and claim 10 or 11
As mould group is set to the casing.
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| CN201910944932.4A CN110505391A (en) | 2019-09-30 | 2019-09-30 | Reflecting element, camera module and terminal device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910944932.4A CN110505391A (en) | 2019-09-30 | 2019-09-30 | Reflecting element, camera module and terminal device |
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| CN1942805A (en) * | 2004-04-01 | 2007-04-04 | 皇家飞利浦电子股份有限公司 | Variable mirror |
| CN101535866A (en) * | 2006-08-31 | 2009-09-16 | 卢森特技术有限公司 | Liquid mirror |
| US7791813B2 (en) * | 2006-10-12 | 2010-09-07 | Honeywell International Inc. | Microfluidic imaging array |
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Application publication date: 20191126 |