CN110908021A - Extrusion type liquid lens and lens module - Google Patents
Extrusion type liquid lens and lens module Download PDFInfo
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- CN110908021A CN110908021A CN201911166610.8A CN201911166610A CN110908021A CN 110908021 A CN110908021 A CN 110908021A CN 201911166610 A CN201911166610 A CN 201911166610A CN 110908021 A CN110908021 A CN 110908021A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/12—Fluid-filled or evacuated lenses
- G02B3/14—Fluid-filled or evacuated lenses of variable focal length
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/004—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid
Abstract
The application provides an extrusion type liquid lens and a lens module. The extrusion type liquid lens provided by the application is provided with the plurality of first transparent rings, the first transparent coils which are driven by the magnetic field to move under the condition of being electrified are arranged on the first transparent rings, when the extrusion type liquid lens is placed in the set magnetic field, the first transparent coils are electrified, so that the first transparent coils generate induction magnetic fields, and the induction magnetic fields and the set magnetic field act to drive the corresponding first transparent coils to move so as to drive the corresponding positions of the first light-transmitting film plates to move; the moving position of the corresponding first transparent ring can be controlled by controlling the magnitude and the direction of the current in each first transparent coil, and then the shape of the first transparent film plate is adjusted, so that a spherical lens or an aspheric lens can be formed.
Description
Technical Field
The application belongs to the field of liquid lenses, and particularly relates to an extrusion type liquid lens and a lens module.
Background
The size of a lens module in a mobile terminal such as a smart phone is generally small. In order to adapt to zooming of a small-sized lens module, it is currently proposed to use a liquid lens as a lens in the lens module, and change the focal length of the lens module by changing the curvature of the liquid lens to realize zooming. The current extrusion formula liquid lens generally is to fill printing opacity liquid in the printing opacity cavity to the one end that makes the cavity is flexible printing opacity membrane, and sets up the extrusion ring, extrudees flexible printing opacity membrane through the extrusion ring, through the shape that changes flexible printing opacity membrane in the extrusion ring, with the non-light tight camber of change liquid. However, such liquid lenses generally can only form spherical lenses, but cannot form aspherical lenses, and are difficult to change to meet the requirements of lens design.
Disclosure of Invention
An object of the embodiments of the present application is to provide a squeeze liquid lens to solve a problem that a squeeze liquid lens existing in the related art can only form a spherical lens.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: the extrusion type liquid lens comprises an enclosure dam, a first light-transmitting film plate and a second light-transmitting film plate, wherein the first light-transmitting film plate is covered at one end of the enclosure dam, the second light-transmitting film plate is covered at the other end of the enclosure dam, a cavity is surrounded by the enclosure dam, the first light-transmitting film plate and the second light-transmitting film plate, light-transmitting liquid is filled in the cavity, and the first light-transmitting film plate is a flexible film; the first light-transmitting diaphragm plate is provided with a plurality of first transparent rings which are concentrically arranged, each first transparent ring is provided with a first transparent coil, and the first transparent coils are driven by a magnetic field to move under the condition of electrification.
In one embodiment, the first transparent film plate is provided with first transparent leads for respectively leading out two ends of each first transparent coil.
In one embodiment, a first flexible circuit board is connected to the first light-transmitting film board, and each first transparent lead is connected to the first flexible circuit board.
In one embodiment, a conductive coil is disposed in the dam.
In one embodiment, the squeeze liquid lens further comprises a magnetic field generator for generating a magnetic field, the magnetic field generator is annular, and each first transparent ring is located in the magnetic field generator.
In one embodiment, the dam constitutes the magnetic field generator.
In one embodiment, the magnetic field generator is fixedly connected to the dam.
In one embodiment, the magnetic field generator is spaced from the dam.
In one embodiment, the dam is connected to the magnetic field generator by a resilient member.
In one embodiment, the second transparent film plate is a flexible film, a plurality of second transparent rings are concentrically arranged on the second transparent film plate, and a second transparent coil driven by a magnetic field to move under the condition of power on is respectively arranged on each second transparent ring.
In one embodiment, the second transparent film is provided with second transparent leads for respectively leading out two ends of each second transparent coil.
In one embodiment, the second light-transmitting diaphragm is a flexible film, the second light-transmitting diaphragm is provided with a plurality of first light-transmitting rings which are concentrically arranged, each first light-transmitting ring is provided with a first light-transmitting coil which is driven by a magnetic field to move under the condition of being powered on, the extrusion type liquid lens further comprises a transparent elastic sheet which elastically supports each first light-transmitting ring, and the transparent elastic sheet is connected with each first light-transmitting ring.
In one embodiment, the transparent elastic sheet is provided with first light-transmitting leads respectively leading out two ends of each first light-transmitting coil.
In one embodiment, the second light-transmitting film plate is a flexible film, a plurality of second light-transmitting rings are concentrically arranged on the second light-transmitting film plate, a second light-transmitting coil driven by a magnetic field to move under the condition of power-on is respectively arranged on each second light-transmitting ring, a plurality of guide rods are arranged on each second light-transmitting ring, the extrusion type liquid lens further comprises a light-transmitting plate, and through holes for the guide rods to be inserted are respectively formed in the light-transmitting plate.
In one embodiment, at least one of the guide rods of each of the second light-transmitting rings is provided with a first electrode connected to two ends of a corresponding second light-transmitting coil of the second light-transmitting ring, a second electrode matched with each of the first electrodes is disposed in the corresponding through hole of the light-transmitting plate, and a second light-transmitting lead connected to each of the second electrodes is disposed on the light-transmitting plate.
Another objective of the embodiments of the present application is to provide a lens module, which includes a bracket, an image sensor mounted on the bracket, and a lens assembly mounted in the bracket, wherein the lens module further includes the extruded liquid lens as described in any of the above embodiments.
In one embodiment, the extrusion type liquid lens is positioned on one side of the lens module close to the image sensor.
In one embodiment, at least one surface of the extrusion type liquid lens is provided with an infrared filtering coating and/or an anti-reflection coating.
In one embodiment, the squeeze liquid lens is located on a side of the lens module away from the image sensor.
In one embodiment, the lens module further comprises a prism arranged on one side of the lens assembly away from the image sensor; the extrusion type liquid lens is located on the light inlet side of the prism, or the extrusion type liquid lens is located on the light outlet side of the prism.
In one embodiment, the squeeze liquid lens is located in the lens module.
In one embodiment, the bracket further has a filter mounted therein, and the filter is located between the lens assembly and the image sensor.
One or more technical solutions in the embodiments of the present application have at least one of the following technical effects:
according to the extrusion type liquid lens provided by the embodiment of the application, the plurality of first transparent rings are arranged, the first transparent coils are arranged on the first transparent rings, when the extrusion type liquid lens is arranged in the set magnetic field, the first transparent coils are electrified, so that induction magnetic fields are generated on the first transparent coils, and the induction magnetic fields and the set magnetic field act to drive the corresponding first transparent coils to move so as to drive the corresponding positions of the first light-transmitting film plates to move; the moving position of the corresponding first transparent ring can be controlled by controlling the magnitude and the direction of the current in each first transparent coil, and then the shape of the first transparent film plate is adjusted, so that a spherical lens or an aspheric lens can be formed.
The lens module that this application embodiment provided has used above-mentioned extrusion formula liquid lens, can make extrusion formula liquid lens form corresponding spherical lens or aspheric surface lens as required to focusing that can be better, in order to improve imaging quality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic top view of a squeeze liquid lens provided in an embodiment of the present application;
fig. 2 is a schematic cross-sectional structural view of an extruded liquid lens provided in an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of the extruded liquid lens of FIG. 2 formed into an aspheric lens;
fig. 4 is a schematic sectional view of the extrusion type liquid lens shown in fig. 2 when forming a spherical lens.
Fig. 5 is a schematic cross-sectional structural view of an extruded liquid lens provided in embodiment two of the present application.
Fig. 6 is a schematic cross-sectional structural view of an extruded liquid lens provided in the third embodiment of the present application.
Fig. 7 is a schematic cross-sectional structural view of an extruded liquid lens provided in the fourth embodiment of the present application.
Fig. 8 is a schematic cross-sectional structural view of an extruded liquid lens provided in embodiment five of the present application.
Fig. 9 is a schematic cross-sectional structural view of an extruded liquid lens provided in embodiment six of the present application.
Fig. 10 is a schematic cross-sectional view of a squeeze liquid lens provided in embodiment seven of the present application;
fig. 11 is a schematic top view of the transparent elastic sheet and the first light-transmitting ring of the squeeze-type liquid lens shown in fig. 10.
Fig. 12 is a schematic cross-sectional view of an extruded liquid lens provided in example eight of the present application;
fig. 13 is a schematic top view of a light-transmitting plate and a second light-transmitting ring of the squeeze liquid lens shown in fig. 12.
Fig. 14 is a schematic structural diagram of a first lens module according to an embodiment of the present disclosure.
Fig. 15 is a schematic structural diagram of a second lens module according to an embodiment of the present disclosure.
Fig. 16 is a schematic structural diagram of a third lens module according to an embodiment of the present application.
Fig. 17 is a schematic structural diagram of a fourth lens module according to an embodiment of the present application.
Fig. 18 is a schematic structural diagram of a fifth lens module according to an embodiment of the present disclosure.
Wherein, in the drawings, the reference numerals are mainly as follows:
100-squeeze liquid lenses; 10-a chamber; 11-a box dam; 111-a conductive coil; 12-a first light-transmitting film plate; 13-a second light-transmitting film plate; 14-a light transmissive liquid; 21-a first transparent ring; 211-a first transparent coil; 212-first transparent leads; 213-a first flexible circuit board; 22-a second transparent ring; 222-a second transparent lead; 223-a second flexible circuit board; 31-a first light-transmitting ring; 311-a first light transmissive coil; 32-a second light-transmitting ring; 321-a second light-transmitting coil; 33-a guide rod; 331-a first electrode; 41-transparent elastic sheet; 411-a support sheet; 412-support ring; 413-connecting ring; 415-a first light transmissive lead; 42-a light-transmitting plate; 421-a through hole; 422-a second electrode; 423-second light-transmissive lead; 43-a third flexible circuit board; 51-a magnetic field generator; 511-an elastic member;
200-a lens module; 201-a scaffold; 202-an image sensor; 203-lens assembly; 204-a filter; 205-a prism; 206-antireflection coating; 207-infrared filter coating.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Referring to fig. 1 to 2, a squeeze liquid lens 100 provided by the present application will now be described. The extrusion type liquid lens 100 comprises a dam 11, a first light-transmitting film plate 12 and a second light-transmitting film plate 13; the first light-transmitting film plate 12 is sealed at one end of the dam 11, the second light-transmitting film plate 13 is sealed at the other end of the dam 11, the first light-transmitting film plate 12 and the second light-transmitting film plate 13 surround the chamber 10, and the chamber 10 is filled with light-transmitting liquid 14, so that light can pass through the chamber 10. First light-transmitting diaphragm plate 12 is the flexible film, is equipped with a plurality of first transparent rings 21 on the first light-transmitting diaphragm plate 12, and a plurality of first transparent rings 21 set up with one heart, and in two adjacent first transparent rings 21 promptly, the less first transparent ring 21 of diameter is arranged in the great first transparent ring 21 of diameter, and the axis coincidence of a plurality of first transparent rings 21. Each first transparent ring 21 is provided with a first transparent coil 211 so that when the first transparent coil 211 is energized, an induction magnetic field can be generated, and the first transparent coil 211 can be driven to move by applying a set magnetic field, so that the first transparent ring 21 can be moved.
Referring to fig. 3, the extrusion type liquid lens 100 is placed in a set magnetic field, and the magnitude and direction of the current in each first transparent coil 211 are changed by electrifying each first transparent coil 211, so as to change the position of each first transparent ring 21, and further drive the corresponding position of the first transparent film 12 to move, thereby forming an aspheric lens. Referring to fig. 4, of course, the squeeze liquid lens 100 can also be formed into a spherical lens by controlling the current in each of the first transparent coils 211. Therefore, the extrusion type liquid lens 100 can better meet the requirements of zooming and focusing and improve the imaging quality. Of course, the moving stroke of each first transparent ring 21 can be controlled by controlling the magnitude of the set magnetic field intensity during use.
In the extrusion type liquid lens 100 of the embodiment of the application, by arranging the plurality of first transparent rings 21 and arranging the first transparent coils 211 on the first transparent rings 21, when the extrusion type liquid lens 100 is placed in a set magnetic field, the first transparent coils 211 are electrified, so that an induction magnetic field is generated on the first transparent coils 211, and the induction magnetic field and the set magnetic field act to drive the corresponding first transparent coils 211 to move so as to drive the corresponding positions of the first light-transmitting film plates 12 to move; by controlling the magnitude and direction of the current in each first transparent coil 211, the moving position of the corresponding first transparent ring 21 can be controlled, and the shape of the first light-transmitting film plate 12 can be adjusted, so that a spherical lens or an aspherical lens can be formed.
In one embodiment, the first transparent film 12 is provided with a first transparent lead 212 connected to each first transparent coil 211, the first transparent film 12 is provided with a plurality of first transparent leads 212, and the first transparent leads 212 respectively lead out two ends of each first transparent coil 211 for external power supply, so as to energize each first transparent coil 211 and facilitate control of current magnitude in each first transparent coil 211. In other embodiments, transparent leads may be separately provided to energize the first transparent coil.
In an embodiment, referring to fig. 1 and 2, the first transparent coil 211 can be made of a graphene material, which not only can transmit light well, but also can adapt to a larger current, and thus can generate a larger induced magnetic field. Of course, in some embodiments, the first transparent coil 211 may also be made of other transparent conductive materials, such as Indium Tin Oxide (ITO), aluminum-doped zinc oxide (AZO), and the like.
In one embodiment, referring to fig. 1 and 2, the first transparent wire 212 can be made of graphene material, which not only can transmit light well, but also can accommodate larger current. Of course, in some embodiments, the first transparent wires 212 may also be made of other transparent conductive materials, such as Indium Tin Oxide (ITO), aluminum-doped zinc oxide (AZO), and the like.
In one embodiment, a transparent conductive wire can be made of a transparent conductive material, wound into a coil, and cured with an adhesive to form the first transparent ring 21, which is then mounted on the first light-transmitting film plate 12. Transparent conductive wires led out from both ends of the wound coil are fixed on the first transparent film 12 to form a first transparent lead 212. So that the first transparent ring 21 can be made smaller and a coil wound with more turns can be formed.
In one embodiment, a transparent ring may be provided, with the coil being fabricated from a transparent conductive material on the ring. The first transparent lead 212 is made of a transparent conductive material on the first transparent film 12, and the first transparent lead 212 is connected to the corresponding coil.
In the above embodiment, the coil can be formed by forming a coating on the ring body using a transparent conductive material, etching the coil, and covering the coil with an insulating layer. Of course, in the above embodiment, a transparent conductive material may be used to form a coating on the insulating layer, and then the coil is etched and covered with the insulating layer, so as to form a multi-layer coil structure on the ring body.
In one embodiment, referring to fig. 1 and 2, the first transparent film 12 is connected to a first flexible circuit board 213, and each of the first transparent leads 212 is connected to the first flexible circuit board 213. The first flexible circuit board 213 is provided to facilitate connection with an external circuit, and each of the first transparent coils 211 is further connected with an external circuit to facilitate control of the squeeze type liquid lens 100.
In one embodiment, a conductive coil 111 may be disposed in the dam 11, and the extruded liquid lens 100 may be placed in a set magnetic field, and when the conductive coil 111 is energized, the dam 11 may be driven to move, thereby better adjusting the shape of the extruded liquid lens 100.
In one embodiment, the dam 11 may also be made of a permanent magnet, so that the extruded liquid lens 100 is placed in a set magnetic field, and when the strength and direction of the set magnetic field are adjusted, the dam 11 may also be driven to move. Of course, in this embodiment, the setting magnetic field may be formed by using an electrified coil, so as to control the strength and direction of the setting magnetic field conveniently.
In one embodiment, referring to fig. 5, the squeeze liquid lens 100 further includes a magnetic field generator 51, the magnetic field generator 51 is annular, and each first transparent ring 21 is located in the magnetic field generator 51. The magnetic field generator 51 is configured to generate a magnetic field, such that when the first transparent coil 211 in each first transparent ring 21 is powered on, the magnetic field generator 51 generates a magnetic field to drive the corresponding first transparent coil 211 to move, so as to drive the corresponding first transparent ring 21 to move. In addition, the magnetic field generator 51 is provided, so that an external setting magnetic field is not required, and the use is convenient.
In one embodiment, referring to fig. 5, the magnetic field generator 51 may be an excitation coil, so that the intensity of the generated magnetic field can be conveniently controlled. In some embodiments, the magnetic field generator 51 may be a permanent magnet to provide a stable magnetic field and reduce power consumption.
In one embodiment, referring to fig. 6, the dam 11 may constitute the magnetic field generator 51, i.e. the magnetic field generator 51 is directly used as the dam 11.
In the above embodiment, when the dam 11 is used as the magnetic field generator 51, the end of the dam 11 protrudes from the first transparent film 12 so that the magnetic field generated from the dam 11 better covers each first transparent ring 21.
In one embodiment, referring to fig. 7, the magnetic field generator 51 is fixedly connected to the dam 11, and when in use, the magnetic field generator 51 is directly fixed, that is, the extrusion type liquid lens 100 can be mounted and fixed, so that the use is convenient.
In one embodiment, referring to fig. 5, the magnetic field generator 51 is spaced apart from the enclosure 11, so that the enclosure 11 and the magnetic field generator 51 can be separately mounted and fixed for convenient arrangement.
In one embodiment, referring to fig. 8, the magnetic field generator 51 is spaced from the dam 11, and the dam 11 is connected to the magnetic field generator 51 through the elastic member 511, so that the squeeze-type liquid lens 100 can be fixed by only installing and fixing the magnetic field generator 51, and the relative position between the dam 11 and the magnetic field generator 51 can be ensured.
In the above embodiment, the dam 11 may be made using a magnetic member, or the conductive coil 111 may be made in the dam 11, so that the dam 11 is driven to move by the magnetic field generator 51. Of course, in the above embodiment, if the magnetic field generator 51 is an excitation coil, the dam 11 may be made of a permanent magnet.
In one embodiment, referring to fig. 1 and 2, the second translucent film plate 13 is a rigid plate, so that only the first translucent film plate 12 of the squeeze liquid lens 100 can be adjusted in shape.
In an embodiment, referring to fig. 9, the second transparent film 13 is a flexible film, a plurality of second transparent rings 22 are disposed on the second transparent film 13, and the plurality of second transparent rings 22 are concentrically disposed, that is, in two adjacent second transparent rings 22, the second transparent ring 22 with a smaller diameter is located in the second transparent ring 22 with a larger diameter, and central axes of the plurality of second transparent rings 22 are overlapped. Each second transparent ring 22 is provided with a second transparent coil (not shown), so that when the second transparent coil is powered on, an induced magnetic field can be generated, and the second transparent coil can be driven to move by an external set magnetic field, so that the second transparent ring 22 can move. This structure can all set up this extrusion formula liquid lens 100's two sides into aspheric surface structure, can control the shape of first light-transmitting diaphragm 12 and second light-transmitting diaphragm 13 respectively to better as required control this extrusion formula liquid lens 100's shape.
In an embodiment, referring to fig. 9, the second transparent film 13 is provided with a plurality of second transparent leads 222, and the second transparent leads 222 respectively lead out two ends of each second transparent coil for connecting to an external power source to energize each second transparent coil. In other embodiments, transparent leads may be separately provided to energize the second transparent coil.
In one embodiment, the second transparent film 13 may be made in the same structure as the first transparent film 12 to facilitate the manufacturing process. The respective first transparent ring 21 and second transparent ring 22 may also be fabricated in the same configuration.
In an embodiment, referring to fig. 9, the second transparent coil may be made of a graphene material, which not only can transmit light well, but also can adapt to a larger current, thereby generating a larger induced magnetic field. Of course, in some embodiments, the second transparent coil may also be made of other transparent conductive materials, such as Indium Tin Oxide (ITO), aluminum-doped zinc oxide (AZO), and the like.
In one embodiment, referring to fig. 9, the second transparent wires 222 can be made of graphene, which not only can transmit light well, but also can accommodate larger current. Of course, in some embodiments, the second transparent wires 222 may also be made of other transparent conductive materials, such as Indium Tin Oxide (ITO), aluminum-doped zinc oxide (AZO), and the like.
In one embodiment, a transparent conductive wire can be made of a transparent conductive material, wound into a coil, and cured with an adhesive to form the second transparent ring 22, which is then mounted on the second light-transmitting film plate 13. Transparent conductive wires led out from both ends of the wound coil are fixed on the second transparent film 13 to form a second transparent lead 222. So that the second transparent ring 22 can be made smaller and a coil wound with more turns can be formed.
In one embodiment, a transparent ring may be provided, with the coil being fabricated from a transparent conductive material on the ring. The second transparent lead 222 is made of a transparent conductive material on the second transparent film 13, and the second transparent lead 222 is connected to the corresponding coil.
In the above embodiment, the coil can be formed by forming a coating on the ring body using a transparent conductive material, etching the coil, and covering the coil with an insulating layer. Of course, in the above embodiment, a transparent conductive material may be used to form a coating on the insulating layer, and then the coil is etched and covered with the insulating layer, so as to form a multi-layer coil structure on the ring body.
In one embodiment, referring to fig. 9, a second flexible circuit board 223 is connected to the second transparent film 13, and each second transparent lead 222 is connected to the second flexible circuit board 223. A second flexible circuit board 223 is provided to facilitate connection with an external circuit, and further, each second transparent coil is connected with the external circuit to facilitate control of this squeeze-type liquid lens 100.
In an embodiment, referring to fig. 10 and 11, the second light-transmitting film 13 is a flexible film, the second light-transmitting film 13 is provided with a plurality of first light-transmitting rings 31, and the plurality of first light-transmitting rings 31 are concentrically arranged, that is, in two adjacent first light-transmitting rings 31, the first light-transmitting ring 31 with a smaller diameter is located in the first light-transmitting ring 31 with a larger diameter, and central axes of the plurality of first light-transmitting rings 31 are overlapped. Each first light-transmitting ring 31 is provided with a first light-transmitting coil 311, so that when the first light-transmitting coil 311 is energized, an induced magnetic field can be generated, and the first light-transmitting coil 311 can be driven to move by applying a set magnetic field, so that the first light-transmitting ring 31 can move. The squeeze liquid lens 100 further includes a transparent elastic sheet 41, and the transparent elastic sheet 41 is connected to each first light transmission ring 31, so that each first light transmission ring 31 is elastically supported by the transparent elastic sheet 41. This structure can all set up this extrusion formula liquid lens 100's two sides into aspheric surface structure, can control the shape of first light-transmitting diaphragm 12 and second light-transmitting diaphragm 13 respectively to better as required control this extrusion formula liquid lens 100's shape.
In an embodiment, referring to fig. 10 and fig. 11, the transparent elastic sheet 41 is provided with first light-transmitting leads 415 respectively leading out two ends of each first light-transmitting coil 311, that is, the transparent elastic sheet 41 is provided with a plurality of first light-transmitting leads 415, and the first light-transmitting leads 415 respectively lead out two ends of each first light-transmitting coil 311 so as to be externally connected with a power supply, thereby powering on each first light-transmitting coil 311. In other embodiments, transparent leads are also separately provided to energize each first light-transmissive coil 311. In some embodiments, a transparent lead wire may be disposed in the second light-transmitting film 13 to energize each of the first light-transmitting coils 311.
The transparent elastic sheet 41 is used to support each first light-transmitting ring 31, and the first light-transmitting lead 415 is disposed in each transparent elastic sheet 41 to facilitate the processing, and during the manufacturing, the transparent elastic sheet 41 and each first light-transmitting ring 31 can be assembled with the second light-transmitting diaphragm 13 after being manufactured, so as to facilitate the processing.
In an embodiment, referring to fig. 10 and 11, the first transparent coil 311 can be made of a graphene material, and not only can transmit light well, but also can be adapted to a larger current, so as to generate a larger induced magnetic field. Of course, in some embodiments, the first light-transmitting coil 311 may also be made of other transparent conductive materials, such as Indium Tin Oxide (ITO), aluminum-doped zinc oxide (AZO), and the like.
In one embodiment, referring to fig. 10 and 11, the first light-transmitting lead 415 can be made of graphene, which not only can transmit light well, but also can accommodate a larger current. Of course, in some embodiments, the first light-transmitting lead 415 may also be made of other transparent conductive materials, such as Indium Tin Oxide (ITO), aluminum-doped zinc oxide (AZO), and the like.
In one embodiment, a transparent conductive wire made of a transparent conductive material is wound to form a coil, and is cured by an adhesive to form the first light-transmitting ring 31, which is then mounted on the transparent elastic sheet 41. Transparent conductive wires led out from two ends of the wound coil are fixed on the transparent elastic sheet 41 to form a first light-transmitting lead 415. So that the first light-transmitting ring 31 can be made smaller and a coil wound with more turns can be formed.
In one embodiment, a transparent ring may be provided, with the coil being fabricated from a transparent conductive material on the ring. The transparent elastic sheet 41 is provided with a first light-transmitting lead 415 made of a transparent conductive material, and the first light-transmitting lead 415 is connected to a corresponding coil.
In the above embodiment, the coil can be formed by forming a coating on the ring body using a transparent conductive material, etching the coil, and covering the coil with an insulating layer. Of course, in the above embodiment, a transparent conductive material may be used to form a coating on the insulating layer, and then the coil is etched and covered with the insulating layer, so as to form a multi-layer coil structure on the ring body.
In one embodiment, the transparent elastic sheet 41 can be made of transparent plastic, transparent film, or the like.
In one embodiment, referring to fig. 10 and 11, the transparent elastic sheet 41 includes support plates 411 respectively extending from the first light-transmitting rings 31 and support rings 412 respectively connected to the support plates 411. The support ring 412 is arranged to facilitate installation and fixation of the transparent elastic sheet 41 and connection with an external circuit; meanwhile, the structure is convenient for fixedly connecting the supporting pieces 411. The support plate 411 is disposed to facilitate connection of the first light-transmitting rings 31 so as to support the first light-transmitting rings 31.
Of course, in some embodiments, the transparent elastic sheet 41 may also include only a plurality of supporting pieces 411, and when in use, the supporting pieces 411 are directly fixed at an end away from the first light-transmitting ring 31.
In one embodiment, referring to fig. 10 and 11, each support piece 411 is integrally formed with the support ring 412 to facilitate manufacturing. In one embodiment, each support piece 411 may be fixed to the support ring 412. The support ring 412 may also be made of a hard material to facilitate mounting and fixing.
In one embodiment, referring to fig. 10 and 11, the transparent elastic sheet 41 further includes a connection ring 413 respectively connected to each first light-transmitting ring 31, and each support piece 411 is fixedly connected to the corresponding connection ring 413. A connecting ring 413 is provided to facilitate mounting and fixing of each first light-transmitting ring 31.
In one embodiment, referring to fig. 10 and 11, each support piece 411 is arc-shaped, so that the elastic sheet supports each first light-transmitting ring 31 and the first light-transmitting ring 31 can move well. In some embodiments, each support piece 411 may also be configured to have an S-shape. In still other embodiments, each support piece 411 may be curved in other shapes.
In one embodiment, referring to fig. 10 and 11, a plurality of supporting pieces 411 are connected to each first light-transmitting ring 31 to support each first light-transmitting ring 31 more stably.
In an embodiment, referring to fig. 12 and 13, the second light transmissive film 13 is a flexible film, a plurality of second light transmissive rings 32 are disposed on the second light transmissive film 13, and the plurality of second light transmissive rings 32 are concentrically disposed, that is, in two adjacent second light transmissive rings 32, the second light transmissive ring 32 with a smaller diameter is disposed in the second light transmissive ring 32 with a larger diameter, and central axes of the plurality of second light transmissive rings 32 are overlapped. Each second light-transmitting ring 32 is provided with a second light-transmitting coil 321, so that when the second light-transmitting coil 321 is energized, an induced magnetic field can be generated, and the second light-transmitting coil 321 can be driven to move by an external set magnetic field, so that the second light-transmitting ring 32 moves. Each second light-transmitting ring 32 is provided with a plurality of guide rods 33, the extrusion type liquid lens 100 further comprises a light-transmitting plate 42, and through holes 421 into which the guide rods 33 are respectively inserted are formed in the light-transmitting plate 42, so that the guide rods 33 can be guided to move by the through holes 421. During the use, can all set up this extrusion formula liquid lens 100's two sides into aspheric structure, can control the shape of first light-transmitting diaphragm 12 and second light-transmitting diaphragm 13 respectively to better controlling this extrusion formula liquid lens 100's shape as required.
In one embodiment, referring to fig. 12 and 13, in the plurality of guide rods 33 corresponding to each second light-transmitting ring 32: at least one of the guide rods 33 is provided with a first electrode 331 connected to two ends of the second light-transmitting ring 32 corresponding to the second light-transmitting coil 321, a second electrode 422 matching with each first electrode 331 is disposed in a corresponding through hole 421 of the light-transmitting plate 42, and a second light-transmitting lead 423 connected to each second electrode 422 is disposed on the light-transmitting plate 42. A second light-transmitting lead 423 is provided on the light-transmitting plate 42 so as to be connected to an external circuit. The first electrode 331 is disposed on the guide bar 33, and the second electrode 422 is disposed in the corresponding through hole 421, so that when the guide bar 33 is inserted into the corresponding through hole 421, the first electrode 331 and the second electrode 422 can be connected, and the second light-transmitting lead 423 can be electrically connected to the corresponding second light-transmitting coil 321, so as to connect the second light-transmitting coil 321 with an external circuit.
In one embodiment, two first electrodes 331 may be disposed at intervals on one of the plurality of guide rods 33 corresponding to each second light-transmitting coil 321, and two second electrodes 422 may be disposed in the corresponding through holes 421, so as to be connected to the two second electrodes 422 through the two first electrodes 331, and further connect two ends of the corresponding second light-transmitting coil 321 to the corresponding second light-transmitting lead 423. In other embodiments, a first electrode 331 may be disposed on each of two guide rods 33 of the plurality of guide rods 33 corresponding to each second transparent coil 321, and a second electrode 422 may be disposed in the corresponding through hole 421, so as to connect two ends of the second transparent coil 321 with the corresponding second transparent lead 423 via the first electrodes 331 on the two guide rods 33, respectively. In still other embodiments, the first electrodes 331 may be disposed on some of the plurality of guide rods 33 corresponding to each of the second light-transmitting coils 321, and the second electrodes 422 may be disposed in the corresponding through holes 331, so as to increase redundancy and ensure that the second light-transmitting coils 321 are well connected to the corresponding second light-transmitting leads 423.
In some embodiments, transparent leads may also be disposed on the second transparent film 13, and respectively connected to the second transparent coils 321, so as to supply power to the second transparent coils 321. In some embodiments, transparent leads may also be provided separately to energize each second light-transmissive coil 321.
In an embodiment, referring to fig. 12 and 13, the second transparent coil 321 can be made of a graphene material, which not only can transmit light well, but also can adapt to a larger current, and thus can generate a larger induced magnetic field. Of course, in some embodiments, the second light-transmitting coil 321 may also be made of other transparent conductive materials, such as Indium Tin Oxide (ITO), aluminum-doped zinc oxide (AZO), and the like.
In an embodiment, referring to fig. 12 and 13, the first electrode 331 can be made of a graphene material, which not only can transmit light well, but also can accommodate a larger current, and thus can generate a larger induced magnetic field. Of course, in some embodiments, the first electrode 331 can also be made of other transparent conductive materials, such as Indium Tin Oxide (ITO), aluminum-doped zinc oxide (AZO), and the like.
In one embodiment, referring to fig. 12 and 13, the second light-transmitting wire 423 can be made of a graphene material, and can transmit light well and accommodate a larger current. Of course, in some embodiments, the second light-transmitting wires 423 may also be made of other transparent conductive materials, such as Indium Tin Oxide (ITO), aluminum-doped zinc oxide (AZO), and the like.
In one embodiment, referring to fig. 12 and 13, the second electrode 422 can be made of graphene, which not only can transmit light well, but also can accommodate a larger current. Of course, in some embodiments, the second electrode 422 may also be made of other transparent conductive materials, such as Indium Tin Oxide (ITO), aluminum-doped zinc oxide (AZO), and the like.
In one embodiment, a transparent conductive wire can be made of a transparent conductive material, wound into a coil, and cured with an adhesive to form a second light-transmissive ring 32, and then a guide bar 33 is molded on the second light-transmissive ring 32, and a first electrode 331 is disposed on the guide bar 33. Transparent conductive wires led out from both ends of the wound coil are fixed on the guide rods 33. So that the second light-transmitting ring 32 can be made smaller and a coil wound with more turns can be formed.
In one embodiment, a transparent ring with guide rods 33 may be provided, with the coil being made of a transparent conductive material on the ring. The transparent plate 42 is provided with a second light-transmitting lead 423 made of a transparent conductive material, and the second light-transmitting lead 423 is connected to the corresponding coil.
In the above embodiment, the coil can be formed by forming a coating on the ring body using a transparent conductive material, etching the coil, and covering the coil with an insulating layer. Of course, in the above embodiment, a transparent conductive material may be used to form a coating on the insulating layer, and then the coil is etched and covered with the insulating layer, so as to form a multi-layer coil structure on the ring body.
In one embodiment, the light-transmitting panel 42 can be made of a transparent plastic, a transparent film, a glass sheet, or the like.
In one embodiment, referring to fig. 12 and 13, a third flexible circuit board 43 is connected to the transparent plate 42, and each second light-transmitting lead 423 is connected to the third flexible circuit board 43. The third flexible circuit board 43 is provided to facilitate connection with an external circuit, and then each of the second light-transmitting coils 321 is connected with the external circuit to facilitate control of the extrusion type liquid lens 100.
The extrusion type liquid lens 100 provided by the embodiment of the application can adjust the shape and the curvature of the surface of the lens as required to form a spherical lens or an aspherical lens, and can be better adapted to different application occasions and requirements.
Referring to fig. 14, an embodiment of the present application further provides a lens module 200, which includes a bracket 201, an image sensor 202, a lens assembly 203, and a squeeze liquid lens 100; the image sensor 202 is mounted on the holder 201, and the image sensor 202 is supported by the holder 201. The lens assembly 203 is mounted in the holder 201, and the lens assembly 203 is supported by the holder 201. The squeeze liquid lens 100 is the squeeze liquid lens described in any of the above embodiments. The lens module 200 of the embodiment of the application uses the extrusion type liquid lens 100, and the extrusion type liquid lens 100 can form a corresponding spherical lens or an aspheric lens according to needs, so that focusing can be better performed to improve the imaging quality.
In the above-described embodiment, there is one squeeze liquid lens 100. In other embodiments, the squeeze liquid lens 100 may be provided in a number of two, three, four, etc.
In the above-described embodiment, the squeeze liquid lens 100 is located on the side of the lens module 200 away from the image sensor 202, so that external light enters the lens module 200 after being zoomed by the squeeze liquid lens 100.
In one embodiment, the holder 201 further has a filter 204 mounted therein, and the filter 204 is located between the lens assembly 203 and the image sensor 202. The optical filter 204 is arranged to filter redundant light, thereby improving the imaging quality.
In one embodiment, referring to fig. 15, the lens module 200 further includes a prism 205 disposed on a side of the lens assembly 203 away from the image sensor 202, so that the lens module 200 forms a periscopic lens. The extruded liquid lens 100 is located on the light-entering side of the prism 205 so that external light passes through the extruded liquid lens 100 before entering the prism 205.
In one embodiment, referring to fig. 18, the extruded liquid lens 100 is located on the light exit side of the prism 205, so that external light enters the extruded liquid lens 100 through the prism 205 and passes to the lens assembly 203.
In one embodiment, referring to fig. 16, the extruded liquid lens 100 is located on a side of the lens module 200 close to the image sensor 202, so that light emitted through the lens assembly 203 enters the image sensor 202 after being focused by the extruded liquid lens 100.
In one embodiment, referring to fig. 16, both sides of the extruded liquid lens 100 are provided with an infrared filter coating 207 and an anti-reflection coating 206, respectively, to improve the imaging quality. In some embodiments, an infrared filter plating layer 207 may be provided on either surface of the squeeze liquid lens 100. In some embodiments, an antireflection coating 206 may be provided on either surface of the extrusion-type liquid lens 100. In some embodiments, the antireflection coating 206 and the infrared filter coating 207 may be provided on both surfaces of the extrusion-type liquid lens 100.
In one embodiment, referring to fig. 17, the extruded liquid lens 100 is located in a lens module 200.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (22)
1. The extrusion type liquid lens is characterized by comprising an enclosure dam, a first light-transmitting diaphragm plate and a second light-transmitting diaphragm plate, wherein the first light-transmitting diaphragm plate is covered at one end of the enclosure dam, the second light-transmitting diaphragm plate is covered at the other end of the enclosure dam, a cavity is surrounded by the enclosure dam, the first light-transmitting diaphragm plate and the second light-transmitting diaphragm plate, light-transmitting liquid is filled in the cavity, and the first light-transmitting diaphragm plate is a flexible film; the first light-transmitting diaphragm plate is provided with a plurality of first transparent rings which are concentrically arranged, each first transparent ring is provided with a first transparent coil, and the first transparent coils are driven by a magnetic field to move under the condition of electrification.
2. The squeeze liquid lens of claim 1, wherein: the first transparent film plate is provided with first transparent leads which respectively lead out two ends of each first transparent coil.
3. The squeeze liquid lens of claim 2, wherein: the first light-transmitting diaphragm plate is connected with a first flexible circuit board, and each first transparent lead is connected with the first flexible circuit board.
4. The squeeze liquid lens of claim 1, wherein: and a conductive coil is arranged in the box dam.
5. The extruded liquid lens of any of claims 1-4, wherein: the extrusion type liquid lens further comprises a magnetic field generator for generating a magnetic field, the magnetic field generator is annular, and each first transparent ring is located in the magnetic field generator.
6. The squeeze liquid lens of claim 4, wherein: the box dam constitutes the magnetic field generating body.
7. The squeeze liquid lens of claim 4, wherein: the magnetic field generating body is fixedly connected with the box dam.
8. The squeeze liquid lens of claim 4, wherein: the magnetic field generating body and the box dam are arranged at intervals.
9. The squeeze liquid lens of claim 8, wherein: the box dam is connected with the magnetic field generating body through an elastic piece.
10. The extruded liquid lens of any of claims 1-4, wherein: the second light-transmitting diaphragm plate is a flexible film, a plurality of second transparent rings which are concentrically arranged are arranged on the second light-transmitting diaphragm plate, and second transparent coils which are driven by a magnetic field to move under the condition of electrification are respectively arranged on the second transparent rings.
11. The squeeze liquid lens of claim 10, wherein: and second transparent leads which respectively lead out two ends of each second transparent coil are arranged on the second light-transmitting film plate.
12. The extruded liquid lens of any of claims 1-4, wherein: the extrusion type liquid lens is characterized in that the second light-transmitting diaphragm plate is a flexible film, a plurality of first light-transmitting rings which are concentrically arranged are arranged on the second light-transmitting diaphragm plate, first light-transmitting coils which are driven by a magnetic field to move under the condition of power-on are respectively arranged on the first light-transmitting rings, the extrusion type liquid lens further comprises transparent elastic sheets which elastically support the first light-transmitting rings, and the transparent elastic sheets are connected with the first light-transmitting rings.
13. The squeeze liquid lens of claim 12, wherein: the transparent elastic sheet is provided with first light-transmitting leads which respectively lead out two ends of each first light-transmitting coil.
14. The extruded liquid lens of any of claims 1-4, wherein: the second printing opacity lamina membranacea is the flexible film, be equipped with a plurality of second printing opacity rings of concentric setting on the second printing opacity lamina membranacea, each be equipped with respectively on the second printing opacity ring and be used for under the circumstances of circular telegram by magnetic field drive and the second printing opacity coil that removes, each be equipped with a plurality of guide arms on the second printing opacity ring, extrusion formula liquid lens still includes the light-passing board, seted up respectively on the light-passing board and supplied each guide arm male through-hole.
15. The squeeze liquid lens of claim 14, wherein: and at least one guide rod on each second light-transmitting ring is provided with a first electrode which is respectively connected with two ends of the corresponding second light-transmitting coil on the second light-transmitting ring, a second electrode matched with each first electrode is arranged in the corresponding through hole on the light-transmitting plate, and a second light-transmitting lead which is respectively connected with each second electrode is arranged on the light-transmitting plate.
16. The lens module is characterized by comprising a bracket, an image sensor arranged on the bracket and a lens assembly arranged in the bracket; the lens module further comprising a squeeze liquid lens as claimed in any one of claims 1 to 15.
17. The lens module as recited in claim 16, wherein: the extrusion type liquid lens is positioned on one side of the lens module close to the image sensor.
18. The lens module as recited in claim 17, wherein: at least one surface of the extrusion type liquid lens is provided with an infrared filtering coating and/or an anti-reflection coating.
19. The lens module as recited in claim 16, wherein: the extrusion type liquid lens is positioned on one side of the lens module, which is far away from the image sensor.
20. The lens module as recited in claim 19, wherein: the lens module further comprises a prism arranged on one side of the lens component far away from the image sensor; the extrusion type liquid lens is located on the light inlet side of the prism, or the extrusion type liquid lens is located on the light outlet side of the prism.
21. The lens module as recited in claim 16, wherein: the extrusion type liquid lens is positioned in the lens module.
22. A lens module as defined in any one of claims 16-21, wherein: and the support is also internally provided with an optical filter, and the optical filter is positioned between the lens assembly and the image sensor.
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| CN201911166610.8A CN110908021B (en) | 2019-11-25 | 2019-11-25 | Extrusion type liquid lens and lens module |
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| CN201911166610.8A CN110908021B (en) | 2019-11-25 | 2019-11-25 | Extrusion type liquid lens and lens module |
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| CN110908021B (en) | 2021-06-15 |
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