The present disclosure relates to the technical field of electronic devices, and more particularly, to a camera module and a terminal device.
For a common camera module, different shooting distances will cause an image-side focus of a lens group to offset to different degrees. Generally, in order to perform focusing, the camera module may adopt a voice coil motor configured to drive a lens barrel to move relative to an image sensor. However, such a structure occupies a relatively large volume, and due to a driving mode of the voice coil motor being mechanical drive, the structure is complex and liable to be damaged.
In view of the above problems, it is urgent to provide a camera module and a terminal device.
A camera module includes an optical array. The optical array includes a plurality of refractive elements arranged in an array. Each of the plurality of refractive elements includes a housing defining a chamber, electrodes arranged on the housing or spaced apart from the housing, a first liquid, and a second liquid. The first liquid and the second liquid are filled in the chamber and are immiscible with each other. A refractive index of the first liquid is different from a refractive index of the second liquid. The housing, the first liquid, and the second liquid have each a high transmittance to visible light. The electrodes are capable of driving the first liquid to flow for changing positions of the first liquid and the second liquid in the chamber. The electrodes in at least two of the plurality of refractive elements are independently controllable.
A camera module includes a lens group including lenses, an optical array, and an image sensor arranged on an image side of the lens group and the optical array, and configured to receive light passing through the lens group and the optical array. The optical array includes a plurality of refractive elements arranged in an array. Each of the plurality of refractive elements includes a housing defining a chamber, electrodes, a first liquid, and a second liquid. The first liquid and the second liquid are filled in the chamber and are immiscible with each other. A refractive index of the first liquid is different from a refractive index of the second liquid. The electrode, when being energized, is capable of generating an electric field acting on at least one of the first liquid and the second liquid in the chamber to change an interface between the first liquid and the second liquid.
A camera module includes a lens group including lenses, an optical array including a substrate, and an image sensor arranged on an image side of the lens group and the optical array, and configured to receive light passing through the lens group and the optical array. A plurality of chambers is defined in the substrate. The plurality of chambers is spaced apart from each other and arranged in an array. A first liquid and a second liquid are filled in each of the plurality of chambers and are immiscible with each other. A refractive index of the first liquid is different from a refractive index of the second liquid. Under an external electric field, at least one of the first liquid and the second liquid is capable of changing an interface between the first liquid and the second liquid.
A terminal device includes a device housing and a camera module arranged in the device housing.
In order to clearly explain technical solutions of the embodiments of the present disclosure or in the related art, drawings used in the description of the embodiments or the related art are briefly described below. Obviously, the drawings described below merely illustrate some embodiments of the present disclosure. Based on these drawings, other drawings can be obtained by those skilled in the art without paying creative effort.
In order to facilitate the understanding of the present disclosure, the present disclosure is described thoroughly below with reference to the accompanying drawings. The accompanying drawings merely illustrate preferred embodiments of the present disclosure. Thus, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. The embodiments are provided to facilitate thorough and comprehensive understanding of the present disclosure.
A “terminal device” used herein includes, but is not limited to, a device configured to receive and/or transmit communication signals via any one or more of the following connection manners: (1) wired line connection, such as a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, or a direct cable connection; and (2) wireless interface, e.g., a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a Digital Video Broadcasting-Handheld (DVB-H) network, a satellite network, and an Amplitude Modulation-Frequency Modulation (AM-FM) broadcast transmitter.
A terminal device configured to communicate via the wireless interface may be referred to as a “mobile terminal”. Examples of the mobile terminal include, but are not limited to: (1) a satellite phone or a cellular phone; (2) a Personal Communications System (PCS) terminal, which can combine a cellular radiotelephone with functions such as data processing, facsimile and data communication; (3) a radiotelephone, a pager, an Internet/Intranet access, a Web browser, a notepad, a calendar, or a Personal Digital Assistant (PDA) provided with a Global Positioning System (GPS) receiver; (4) a conventional laptop and/or palmtop receiver; and (5) a conventional laptop and/or palmtop radiotelephone transceiver, etc.
For a common camera module, different shooting distances may cause an image-side focus of a lens group to offset to different degrees. Generally, in order to perform focusing, the camera module adopts a voice coil motor configured to drive a lens barrel to move relative to an image sensor. However, such a structure occupies a relatively large volume, and due to a driving mode of the voice coil motor being mechanical drive, the structure is complex and liable to be damaged.
In this regard, the embodiments of the present disclosure provide a camera module and a terminal device to solve the above problems. The camera module according to the embodiments of the present disclosure can exert focusing and anti-shake functions without providing a mechanical moving part in the camera module, thereby reducing the size and structural complexity of the camera module, and allowing the camera module to be less vulnerable to damages.
Referring to
In some embodiments, the electrode 123, when being energized, can form an electric field acting on at least one of the first liquid 124 and the second liquid 125 in the chamber 122, so as to change the interface 1241 between the first liquid 124 and the second liquid 125 as desired.
In the above camera module 10, by adjusting the electrodes 123 in each refractive element 120 to generate the electric field in the chamber 122, the first liquid 124 and the second liquid 125 in the chamber 122 can be distributed into desired positions. Thus, the interface 1241 between the first liquid 124 and the second liquid 125 can be maintained in a desired shape and inclination angle, such that the incident light can be deflected towards a desired direction when passing through the interface 1241 between the first liquid 124 and the second liquid 125.
By adjusting the electrode 123 in each refractive element 120, each refractive element 120 can deflect the incident light towards the desired direction. Additionally, since the optical array 12 includes the plurality of refractive elements 120 arranged in an array, the optical array 12 can control a deflection angle of the incident light incident to each region (i.e., each region corresponding to each refractive element 120). During shooting, when an image-side focus of the lens group 11, due to an offset thereof, cannot appropriately correspond to a receiving surface of the image sensor 13, the deflection direction of the incident light in each region can be changed by modulating the optical array 12, so as to exert the focusing function. On the other hand, when the shaking occurs in a process of shooting, the incident light can also be adjusted by modulating the plurality of refractive elements 120 to compensate for the offset of the focus, thereby exerting the anti-shake function. In addition, different from the conventional mechanical moving structure, the above-mentioned camera module 10 is simple in its structure, and can perform focusing and anti-shake without providing the mechanical moving part. In this way, the camera module 10 can be effectively prevented from being damaged during the mechanical movements, and the size of the camera module 10 can be reduced to facilitate a miniaturized design.
In some embodiments, the optical array 12 in the camera module 10 includes a substrate, which may be formed as one piece. A plurality of chambers 122 is defined in the substrate. These chambers 122 are spaced apart from each other and arranged in an array. Each chamber 122 on the substrate can be regarded as the chamber 122 of one refractive element 120 as described above. Further, a plurality of grooves may be formed on the substrate, the first liquid 124 and the second liquid 125 are injected into the grooves, and the grooves are sealed with a transparent curing glue to enable the grooves to form the above chamber 122. The transparent curing glue may be an ultraviolet (UV) glue. Alternatively, a side of the substrate where the grooves are formed may be attached with a cover plate to seal the grooves. A periphery structure of the substrate surrounding each chamber 122 and the transparent curing glue can be regarded as a chamber wall of the chamber 122, i.e., the housing 121 of the corresponding refractive element 120. The first liquid 124 and the second liquid 125 are filled in the chamber 122 and are immiscible with each other, the refractive index of the first liquid 124 is different from the refractive index of the second liquid 125, and an external electric field can act on at least one of the first liquid 124 and the second liquid 125 to change the interface 1241 between the first liquid 124 and the second liquid 125.
Further, in some embodiments, the optical array 120 includes a plurality of electrodes 123 that may be arranged in the grooves of the substrate described above or arranged on the cover plate attached to the substrate.
In the embodiments of the present disclosure, a material is considered to have a high transmittance to the visible light if it has a transmittance to the visible light greater than or equal to 70%. In addition, a density of the first liquid 124 is the same as a density of the second liquid 125, thereby minimizing an influence caused by shaking of the first liquid 124 and the second liquid 125. In this way, the flow of the first liquid 124 and the second liquid 125 in the chamber 122 may be as less as possible affected by the gravity, and thus can more rapidly respond to the effect exerted by the electrode 123. As an example, the density of the first liquid 124 is defined as ρ1, and the density of the second liquid 125 is defined as ρ2, and a density ratio ρ of the first liquid 124 to the second liquid 125 satisfies 0.8≤ρ≤1.2, for example, ρ can be 0.8, 0.9, 1.1, or 1.2. In addition, in order to enable the incident light to pass through both the first liquid 124 and the second liquid 125, a volume of the first liquid 124 can be approximately the same as a volume of the second liquid 125, e.g., a volume ratio of the first liquid 124 to the second liquid 125 may be within a range of 40% to 60%. In this way, it is less likely to occur that the first liquid 124 or the second liquid 125 is completely driven to an edge of the chamber 122 and thus a flat interface 1241 cannot be formed.
In addition to the density relation between the liquids, in some embodiments, a volume ratio k of the first liquid 124 to the second liquid 125 in the chamber 122 satisfies 0.8≤k≤1.2, and specifically, k may be 0.8, 0.9, 1, 1.1 or 1.2. When the chamber 122 is provided with hydrophobic layers on its two opposite sides perpendicular to a light incident direction, under an effect of the hydrophobic layers on the liquids in the chamber, the above design may allow the interface 1241 to extend to the hydrophobic layers on the two opposite sides described above, such that the incident light can pass through the interface 1241 as much as possible, thereby sufficiently adjusting the incident light. Further, in some embodiments, the volume ratio k can be as close to 1 as possible.
On the other hand, the number and a shape of the lenses in the lens group 11 are not limited to the example illustrated in
Referring to
In addition to arranging the electrode 123 on a side of the housing 121 facing away from the chamber 122, the electrode 123 can also be arranged on a side of the housing close to the chamber 122, or as a part of the chamber wall of the chamber 122. In some embodiments, an inner surface of the side wall 1213, i.e., a surface of the side wall 1213 close to the chamber 122, is a curved surface. In this case, the electrode 123 can be arranged around the chamber 122 along the curved surface, and the electrode 123 can be insulated from the liquids in the chamber.
In some embodiments, the first liquid 124 is a charged ionic liquid, and the second liquid 125 is an uncharged oily liquid. In this case, a voltage can be applied between the first electrode 1231 and the second electrode 1232 to drive the first liquid 124 to flow towards a predetermined direction and displace the second liquid 125, and finally, the first liquid 124 and the second liquid 125 are confined in a desired region of the chamber 122. Further, by controlling a voltage of the electrode 123, the interface 1241 between the first liquid 124 and the second liquid 125 can be kept flat and an angle between the interface 1241 and the side wall 1213 can be defined. In the embodiments of the present disclosure, the electrodes 123 in at least two refractive elements 120 can be controlled independently from each other. In some embodiments, the electrode 123 in each refractive element 120 in the optical array 12 can be independently controlled.
Therefore, by controlling the voltage of the electrode 123, the deflection direction of the incident light when passing through the interface 1241 can be adjusted to enable light incident on each refractive element 120 to be emitted out of the refractive element 120 in the desired direction, thereby endowing the camera module 10 with the focusing and anti-shake functions. In some embodiments, the second liquid 125 is actually neither limited to the oily liquid, nor limited to being uncharged, as long as the second liquid 125 and the first liquid 124 are immiscible with each other and the flat interface 1241 therebetween can be formed under an action of the electric field generated by the electrodes 123. For example, the second liquid 125 may be a charged liquid having a same electrical property but a different charge density, when compared to the first liquid 124. As an example, the first liquid 124 and the second liquid 125 are both positively charged liquids, and the charge density of the second liquid 125 is smaller than the charge density of the first liquid 124.
Specifically, referring to
Referring to
Further, the optical array 12, due to its function of deflecting the light passing through the refractive elements 120, can also be configured to exert the anti-shake function. For example, when the shaking of the camera module 10 occurs and a focus of an image of a subject to be photographed on the image sensor 13 shifts upwards, a shake direction can be sensed by means of a gyroscope, and a voltage can be applied to the plurality of refractive elements 120 in the optical array 12 to change a propagation direction of incident image light after passing through the optical array 12. In this way, the focus of the image light can shift downwards to compensate the offset.
In combination with the above embodiments, by independently adjusting the electrodes 123 in the respective refractive elements 120, the camera module 10 can drive the first liquid 124 to flow, such that the first liquid 124 can drive the second liquid 125 to flow. In this case, the first liquid 124 and the second liquid 125 in the chamber 122 can be distributed to the desired positions to maintain the interface 1241 between the first liquid 124 and the second liquid 125 in a desired shape and at a desired inclination angle. In this way, the incident light can be deflected towards the desired direction when passing through the interface 1241 between the first liquid 124 and the second liquid 125. By adjusting the electrode 123 in each refractive element 120, each refractive element 120 can deflect the incident light towards the desired direction. In addition, since the optical array 12 includes the plurality of refractive elements 120 arranged in an array, the optical array 12 can control the deflection angle of the incident light incident to each region (each refractive element 120). In the process of shooting, when the image-side focus of the lens group 11 fails to be located in an expected position on the receiving surface of the image sensor 13 due to an offset, the optical array 12 arranged at the object side, in the inside, or at the image side of the lens group 11 can be modulated to change the deflection direction of the incident light in each region to enable the adjusted image-side focus to be located on the receiving surface of the image sensor, thereby exerting the focusing function. On the other hand, when the shaking occurs in the process of shooting, the incident light can also be adjusted by modulating the plurality of refractive elements 120 to compensate for the offset of the focus, thereby exerting the anti-shake function. In addition, different from the conventional mechanical moving structure, the above-mentioned camera module 10 has a simple structure, and can perform the focusing and anti-shake without providing the mechanical moving part. Therefore, the camera module 10 can be effectively prevented from being damaged during the mechanical movements of the mechanical moving part, and the size of the camera module 10 can be reduced to facilitate the miniaturized design of the camera module 10.
In addition, due to the difficulty in satisfyingly correcting the incident light by the conventional lens group 11, for light emitted out from the lens group 11, it is evitable that a focus of light close to the optical axis and a focus of light close to an edge are at different positions, i.e., a spherical aberration may occur. Therefore, by providing the optical array 12, the light emitted out from an edge region of the lens group 11 can be corrected by the optical array 12, such that the light emitted out from the edge region and light in a region close to the optical axis can be focused on the receiving surface of the image sensor 13, thereby correcting the spherical aberration and improving imaging quality.
Compared with the above embodiments, in some embodiments, the electrode 123 and the housing 121 can be spaced apart from each other. In some other embodiments, the electrode 123 may serve as the housing 100, and in this case, a side of the electrode 123 close to the first liquid 124 and the second liquid 125 is required to be covered with an insulating structure to prevent electrons in the electrode 123 from being transferred to the charged liquid. In this case, the insulating structure can serve as a part of the housing 121.
In some embodiments, the refractive element 120 includes a grounding member (not shown) arranged in the housing 121 and insulated from the electrode 123. The grounding member is configured to be grounded and can be in contact with at least one of the first liquid 124 and the second liquid 125. Specifically, the grounding member may be in contact with the ionic liquid, such that the ionic liquid and the grounding member can be in a conductive connection to change an overall charge amount of the ionic liquid. The grounding member may be regarded as a grounding electrode. In some embodiments, when the electrode is arranged on a side of the housing 121 close to the chamber 122, the electrode 123 may be covered with a film, e.g., a hydrophobic layer 126 as mentioned above. The film (not shown) has both insulativity and hydrophobicity, and is configured to insulate and separate the electrode 123 from the first liquid 124 and the second liquid 125, preventing the grounding member from being short-circuited with the electrode 123 through the ionic liquid. By controlling the potential on the electrode 123, a contact area between the ionic liquid and the film can be controlled, and further, a curvature of the interface 1241 can be controlled. It should be noted that the ionic liquid is conductive. In some embodiments, when no electric field is generated by the electrode 123 in the chamber 122, the ionic liquid in the chamber 122 is electrically neutral, and the ionic liquid may carry positive or negative electricity as a whole under an action of the grounding member depending upon on a state of the electric field generated by the electrode 123.
In some embodiments, the film may exhibit the hydrophobicity to the ionic liquid. That is, the film may have a repelling effect on conductive liquids, and have an affinity effect on oily liquids. One of the first liquid 124 and the second liquid 125 may be a conductive liquid, while the other one may be an oily liquid. In the following description, as an example, the first liquid 124 is the conductive liquid and the second liquid 125 is the oily liquid. In a natural state, the interface 1241 can be driven to stabilize at the desired position by the provided film, and the affinity effect between the conductive liquid and the film can be changed by adjusting the potential of the corresponding electrode 123, so as to change the contact area between the conductive liquid and the film, and further to control a change of the interface 1241. Thus, it is preferable to arrange the electrode 123 on a side opposite to a contact side between the film and the conductive liquid, allowing the electrode 123 to sufficiently act on the conductive liquid close to the contact surface between the film and the liquid. Therefore, in some embodiments, the film can be disposed between the conductive liquid and the electrode 123 in such a manner that the electrode 123 is arranged on a side of the housing 121 close to the chamber 122. That is, the electrode is arranged inside the chamber 122, and the film covers the electrode 123 to isolate the electrode 123 from the liquid in the chamber. In this case, the film is configured to insulate the electrode 123 from the liquid in the chamber. In some embodiment, the film can be disposed between the conductive liquid and the electrode 123 in such a manner that the film is located on the side of the housing 121 close to the chamber 122 and the electrode 123 is located on a side of the housing 121 facing away from the chamber 122.
Of course, in other embodiments, the electrode 123 may serve as a part of the chamber wall of the chamber 122, e.g., the chamber 122 is enclosed by the electrode 123 and the housing 121, as long as the electrode 123 is insulated from the liquid in the chamber 122.
Further referring to
In some embodiments, the hydrophobic layer 126 and the electrode 123 are arranged in the same orientation and position of the housing 121. That is, the hydrophobic layer 126 and the electrode 123 can be together arranged on at least one of the upper wall 1211, the lower wall 1212, and the side wall 1213. For example, the electrode 123 can be arranged on a side of the upper wall 1211 facing away from the chamber 122, and the hydrophobic layer 126 can be arranged on a side of the upper wall 1211 close to the chamber 122.
When no voltage is applied to the electrode 123, by contacting the hydrophobic layer 126 with the second liquid 125, the hydrophobic layer 126 can stabilize a shape and a position of the second liquid 125 in the chamber 122 and further stabilize a shape and a position of the first liquid 124 in the chamber 122. In this case, by applying the voltage to the electrode 123, an electric field can be generated in the chamber 122 to drive the first liquid 124, thereby changing the position and the shape of the first liquid 124 in the chamber 122, such that the interface 1241 between the first liquid 124 and the second liquids 125 may become flat, and the inclination direction and the inclination angle of the interface 1241 may be changed.
In some embodiments, instead of arranging the electrode 123 on the outer surface of the side wall 1213, the electrode 123 may be arranged on an inner surface of the side wall 1213 (i.e., a surface of the side wall 1213 close to the chamber 122). In this case, the hydrophobic layer 126 can be further completely arranged on the surface of the electrode 123 to prevent the first liquid 124 and the second liquid 125 from contacting the electrode 123. The above arrangements enable the electrode 123 to be closer to the first liquid 124, and thus an intensity of the electric field generated by the electrode 123 in the chamber 122 can be increase to drive the first liquid 124 faster.
Referring to
Specifically, in an embodiment, the first liquid 124 is positively charged, and a voltage is applied between three potential regions 1230 closest to the upper wall 1211 in the first electrode 1231 and three potential regions 1230 closest to the lower wall 1213 in the second electrode 1232, so as to accumulate positive charges on the three potential regions 1230 closest to the upper wall 1211 in the first electrode 1231, and to accumulate negative charges on the three potential regions 1230 closest to the lower wall 1213 in the second electrode 1232. In this case, the electric field in the chamber 122 may approximately point from the potential regions 1230 close to the upper wall 1211 in the first electrode 1231 to the potential regions 1230 close to the lower wall 1213 in the second electrode 1232, thereby generating an inclined electric field. In other embodiments, when the electrode 123 is arranged on the upper wall 1211 and/or the lower wall 1212, the electrode 123 arranged on the upper wall 1211 and/or the lower wall 1212 may also be provided with a plurality of potential regions 1230 to form electric fields in the chamber 122 along different directions, e.g., an electric field parallel to, perpendicular to, or at any inclination angle with respect to the axis 1214. In this way, the flexibility of the flow of the first liquid 124 and the second liquid 125 can be increased to reach the equilibrium position faster.
A cross section of the refractive element 120 in a direction perpendicular to the axis 1214 may have a shape of rectangle, triangle, regular polygon (with an internal angle greater than 90°), etc. However, in principle, the shape of the cross section of the refractive element 120 should enable the plurality of refractive elements 120 to be arranged in a compact array, such that the incident light can enter a prism element as much as possible, and the incident light can be prevented from passing through a gap between the refractive elements 120.
The lens group 11 has an optical axis, which is an optical axis of lens, and the optical axis of the lens group 11 is parallel to the axis 1214 of each refractive element 120. When more than two lenses are provided, the lenses are arranged coaxially with respect to each other. In some embodiments, a projection of the refractive element 120 on a plane perpendicular to the optical axis has a shape of triangle or regular polygon. The plurality of refractive elements 120 is arranged in an array along the direction perpendicular to the optical axis, and the direction perpendicular to the optical axis includes multiple directions.
Specifically, in some embodiments, the refractive element 120 has a square structure. In this case, the outer wall surface of the side wall 1213 of the refractive element 120 can be divided into four portions, i.e., the side wall 1213 includes a first side wall, a second side wall, a third side wall, and a fourth side wall. The chamber 122 is enclosed by the first side wall, the second side wall, the third side wall, the fourth side wall, the upper wall 1211, and the lower wall 1212. The first side wall is adjacent and vertical to the second side wall and the fourth side wall, and the same is suitable for other side walls 1213. The first electrode 1231 is arranged on a side of the first side wall facing away from the chamber 122, and the second electrode 1232 is arranged on a side of the third side wall facing away from the chamber 122, such that the first electrode 1231 and the second electrode 1232 can form a transverse electric field along a normal direction of the first side wall and the third side wall in the chamber 122. In some embodiments, the electrode 123 is provided on the surface of each side wall 1213 facing away from the chamber 122. For example, the first side wall, the second side wall, the third side wall, and the fourth side wall are respectively provided with an electrode 123 on a side facing away from the chamber 122. In this case, the electrodes 123 can form, in the chamber 122, a transverse electric field along the normal direction of the first side wall and the third side wall as well as a transverse electric field along a normal direction of the second side wall and the fourth side wall.
In the above embodiments, the first side wall is opposite to the third side wall, the second side wall is opposite to the fourth side wall, the first electrode 1231 is arranged on the side of the first side wall facing away from the chamber 122, the second electrode 1232 is arranged on the side of the third side wall facing away from the chamber 122, the third electrode is arranged on the side of the second side wall facing away from the chamber 122, and the fourth electrode is arranged on the side of the fourth side wall facing away from the chamber 122. The first electrode and the second electrode, after being energized, can form a transverse electric field in the chamber 122, and the third electrode and the fourth electrode, after being energized, can form a transverse electric field in the chamber 122.
In some embodiments, the shape of the cross section of the refractive element 120 is a regular hexagon, and thus the outer wall surface of the side wall 1213 can be divided into six portions. Each portion of the wall surface (outer wall surface) of the side wall 1213 facing away from the chamber 122 is provided with an electrode 123, and the electrodes 123 arranged on two opposite portions of the side wall 1213 can form a transverse electric field in the chamber 122. That is, in this case, the hexagonal refractive element 120 can form the transverse electric fields in at least three directions. In this way, more electric field forces can be applied to the first liquid 124 to confine the first liquid 124 to more positions of the chamber 122 in various forms, and further, the interface 1241 can be inclined towards more directions to increase the selectivity of deflections of the incident light.
In some embodiments, adjacent refractive elements 120 can share a part of the side wall 1213, and the shared side wall 1213 can serve as a part of each of the housings 121 of adjacent refractive elements 120. In an embodiment, the shape of the cross sectional of the refractive element 120 is a regular polygon, and in the optical array 12, the adjacent refractive elements 120 share the sidewall 121. In this case, the electrodes 123 of these refractive elements 120 can be arranged on the upper wall 1211 and the lower wall 1212.
Referring to
Similarly, in some embodiments, in order to improve utilization of the incident light and allow as much incident light as possible to reach the image sensor 13 to avoid an image being too dark, a length of the housing 121 along the direction of the axis 1214 is smaller than a length of the housing 121 along the direction perpendicular to the axis 1214. In this case, the incident light can pass through the refractive element 120 faster, and a propagation distance in the first liquid 124 and the second liquid 125 is shortened to reduce the loss of the incident light.
Specifically, in an embodiment, in addition to the first electrode 1231 and the second electrode 1232 arranged on the side wall 1213, a third electrode 1233 is arranged on the upper wall 1211 and a fourth electrode 1234 is arranged on the lower wall 1212. The third electrode 1233 is arranged on the side of the upper wall 1211 facing away from the chamber 122, and the fourth electrode 1234 is arranged on the side of the lower wall 1212 facing away from the chamber 122. The third electrode 1233 and the fourth electrode 1234 can form a longitudinal electric field parallel to the axis 1214 in the chamber 122. In practical applications, an inclined electric field may be generated between the first electrode 1231 and the third electrode 1233 or the fourth electrode 1234, and an inclined electric field may also be generated between the second electrode 1232 and the third electrode 1233 or the fourth electrode 1234.
Referring to
In addition, referring to
Referring to
Specifically, in an embodiment, the camera module 10 is applied in a smart phone and serves as a front camera module or a rear camera module of the smart phone. In this case, the camera module 10 is mounted on a middle frame of the smart phone. By adopting the camera module 10 according to the embodiments of the present disclosure, the terminal device 20 can adjust the propagation direction of the incident light passing through respective refractive element 120 by electrically controlling the plurality of refractive elements 120, thereby exerting the functions such as focusing and anti-shake, and correcting problems such as the aberration and the distortion of the lens group 11. In addition, the above-mentioned camera module 10 does not require to be provided with a mechanical moving part for the focusing or anti-shake, such that the camera module 10 can be prevented from being damaged during the mechanical movement of internal components. Further, since the above camera module 10 has a smaller size and a simpler structure than the conventional module provided with the mechanical moving part, which is conducive to the miniaturized design of the terminal device 20 and reduces the production cost.
Technical features in the above embodiments can be combined arbitrarily. For concise description, not all possible combinations of the technical features in the above embodiments are described. However, any combination of the technical features in the above embodiments should be considered as falling within the scope of the present disclosure, as long as no conflict occurs between combinations of the technical features.
The above embodiments illustrate merely some implementations of the present disclosure, which are described in details but should not be construed to limit the scope of the present disclosure. It should be understood that those skilled in the art can make various modifications and improvements without departing from the concept of the present disclosure, and these modifications and improvements shall fall within the protection scope of the present disclosure. The protection scope of the present disclosure shall be defined by the appended claims.
Number | Date | Country | Kind |
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201910824574.3 | Sep 2019 | CN | national |
This application is a continuation of International Application No. PCT/CN2020/112968, filed on Sep. 2, 2020, which claims priority to Chinese Patent Application No. 201910824574.3, filed on Sep. 2, 2019. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties.
Number | Date | Country | |
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Parent | PCT/CN2020/112968 | Sep 2020 | US |
Child | 17574451 | US |