JP3140079U - Compound focus variable liquid crystal lens module - Google Patents

Abstract

A compound focus variable liquid crystal lens module is provided.
The first liquid crystal lens element includes a first liquid crystal lens element and a second liquid crystal lens element, and the first liquid crystal lens element modifies an image light refractive index by an external electric signal to provide the same light diffusion function as a concave lens, The second liquid crystal lens element is provided at the rear end of the first liquid crystal lens element and modifies the image light refractive index by an external electric signal to provide the same light beam convergence function as the convex lens. A variable-focus liquid crystal lens that controls the light diffusion effect of a photographed image and further controls the convergence effect by the second liquid crystal lens element, thereby achieving the effect of adjusting the scale of the photographed image, and does not include a movable lens and a lens head Module is achieved.
[Selection] Figure 2

Description

  The present invention relates to a type of compound focus variable liquid crystal lens module, and is particularly applied to a digital camera or camera-equipped mobile phone, and can adjust the focus of an optical image by changing the refractive index of the liquid crystal in an electric signal and non-mechanical drive type. The present invention relates to a lens module.

  The digital camera and the camera-equipped mobile phone are photographic equipment that is worn and carried widely. The lens magnification adjustment mechanism of the known digital camera and camera-equipped mobile phone is as shown in FIG. 2, the optical lens 3 and the image sensor 4 are included. The optical lens 3 is coupled to the front end of the casing 2 and has a function of capturing an object image. The optical lens 3 achieves functions of image enlargement / reduction and focus adjustment by mechanical manual or automatic adjustment. The image sensor 4 is provided inside the casing 2 and forms and responds to an optical image captured by the optical lens 3.

  The magnification and focal length can be adjusted by nonlinear or linear movement of the electric small motor even if the image enlargement / reduction and focus adjustment method of the optical lens 3 employed in the known image enlargement / reduction adjustment mechanism 1 is manual. Even with mechanical assembly methods and structures, digital cameras and camera-equipped mobile phones, etc. that generate mechanical movement operation noise and are required to be as portable as possible by reducing the volume as much as possible Since the apparatus is limited in finite application space and length, there is not enough distance for the focal length adjustment and magnification adjustment of the optical lens 3, and thus the magnification and focus adjustment functions are very limited.

  For this reason, since the above-described well-known image enlargement / reduction adjustment mechanism 1 is limited by the finite moving distance of the optical lens 3, if the image is taken beyond the range of the magnification adjustment and the focal length adjustment of the optical lens 3, the photographed image is displayed. If the image is not enlarged or reduced accurately, the image is out of focus, an off focus phenomenon occurs, and the image quality deteriorates or the image cannot be captured.

  In addition, there is Patent Document 1 as a well-known technical document related to this, which uses a polymer network liquid crystal (PNLC) system to achieve the optical function of the lens. It is not composed of devices / modules, is difficult and inconvenient in practice, and cannot be used industrially.

  Patent Document 2 describes that a lens function is provided using a polymer dispersed liquid crystal (PDLC) method and a liquid crystal drop method, but the magnification of the lens is described. It is not a module structure having an adjustment function.

  Although Patent Document 3 describes a method of aligning liquid crystal polymer molecules in PNLC, it is not a single device or a module structure, and is difficult and inconvenient in practice and cannot be used industrially.

  Patent Document 4 describes a single adjustable liquid crystal lens structure (tunable LC lens), does not describe a lens function using PNCL, and the optical system is not a multiple liquid crystal lens structure.

  Patent Document 5 describes a kind of application device for a liquid crystal lens that modifies an optical path by changing an electric field, but similarly there is no module structure, which is difficult and inconvenient in practice and is industrially used. Can not.

  In addition, many documents such as Patent Documents 6-20 describe a similar method, that is, a polymer network liquid crystal mixture and a diaphragm structure, both of which describe a magnification adjusting device and a module device. There is no.

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  The main object of the present invention is to provide a kind of compound focus variable liquid crystal lens module, which does not need to drive the lens head or lens mechanically, but has the function of expanding and contracting the lens by driving with an electric signal. To achieve and solve the noise problem of mechanical moving lens.

  A second object of the present invention is to provide a kind of compound focus variable liquid crystal lens module, which is a single combination of at least one first liquid crystal lens element and at least one second liquid crystal lens element. The module is not limited to the application space size or the operation space size, and has a relatively high performance, magnification scaling function, and focus adjustment function.

  The third object of the present invention is to provide a kind of compound focus variable liquid crystal lens module, which is applied to the inside of a digital camera and a camera-equipped mobile phone having a limited space in which the single lens expansion / contraction lens module is limited. This is advantageous for industrial and digital photography product applications.

  The compound focus variable liquid crystal lens module of the present invention includes at least one first liquid crystal lens element and at least one second liquid crystal lens element, and the first liquid crystal lens element has an image light refractive index according to an external electric signal. The second liquid crystal lens element is provided at the rear end of the first liquid crystal lens element, and the refractive index of the image light is modified by an external electric signal to be the same as the convex lens. Provides a light beam convergence function, controls the light diffusion effect of the image captured by the first liquid crystal lens element, and further controls the convergence effect by the second liquid crystal lens element, thereby achieving the effect of adjusting the scale of the captured image. The lens does not include a movable lens and a lens head, and achieves the functions of lens enlargement / reduction and focus adjustment by an electric signal.

  The present invention provides a kind of compound focus variable liquid crystal lens module, which does not need to mechanically drive the lens head or lens, and is driven by an electrical signal to achieve the function of expanding and contracting the lens. Solve noise problems. In addition, the present invention is a single module that combines at least one first liquid crystal lens element and at least one second liquid crystal lens element, and is not limited to the application space size or the operation space size, and has relatively high performance and magnification. The function of enlargement / reduction and focus adjustment is provided. Furthermore, the present invention is advantageous for industrial and digital photography product applications because the single module expansion / contraction lens module is applied inside a digital camera and camera-equipped mobile phone with limited space.

  FIG. 2 shows a first embodiment of a composite variable focus liquid crystal lens module 100 according to the present invention. The composite variable focus liquid crystal lens module 100 includes at least one first liquid crystal lens element 10. The first liquid crystal lens element 10 has a captured image capturing function, and the type of the first liquid crystal lens element 10 is not limited. In the present invention, a transmissive liquid crystal panel is taken as an example, and the first liquid crystal lens element 10 10 includes at least one frame 11, at least a pair of alignment layers 12 and 13, at least a pair of ITO conductive layers 14 and 15, and at least a pair of lens substrates 16 and 17. Liquid crystal 111 is enclosed, and the liquid crystal 111 is a polymer network liquid crystal.

  See also FIG. The principle of defining the liquid crystal 111 sealed in the frame 11 of the first liquid crystal lens element 10 to form the optical characteristics of the concave lens is that a gray mask 112 is placed at the front end of the frame 11 and the inside of the gray mask 112 A concave lens-shaped raster is formed on the front surface of the gray mask 112, an ultraviolet light source 113 is provided at the front end of the gray mask 112, and ultraviolet light is emitted from the ultraviolet light source 113 toward the gray mask 112. A portion projected to the liquid crystal 111 and positioned at the front end of the frame 11 of the liquid crystal 111 is defined in the same shape as the concave lens (dotted line portion in FIG. 3), and thus the shape of the polymer molecular arrangement in the liquid crystal 111 is modified, and the shape Is a concave lens, and is located at the front end of the frame 11 of the liquid crystal 111 as will be inferred from this Min also forms another concave shape by the same ultraviolet light source 113 and the gray mask 112 (dotted line in FIG. 3).

  The alignment layers 12 and 13 described above are bonded to both sides of the frame 11, respectively, to seal the frame 11, the ITO conductive layer 14 is bonded to the outside of the alignment layer 12, and the other ITO conductive layer 15 is connected to the other. The first electrode 141 is provided on the ITO conductive layer 14 and the second electrode 151 is provided on the ITO conductive layer 15. The second electrode 151 is provided between the first electrode 141 and the second electrode 151. By passing different bias voltages or drive power supplies, the refractive index of the liquid crystal 111 in the frame 11 is altered. The lens substrate 16 is coupled to the outside of the ITO conductive layer 14, the lens substrate 16 is a planar lens, the lens substrate 17 is coupled to the outside of the ITO conductive layer 15, and the lens substrate 17 is a planar lens.

  There is no limitation on the coupling method between the alignment layers 12 and 13, the ITO conductive layers 14 and 15, and the lens substrates 16 and 17, but in the present invention, the ITO conductive layers 14 and 15 are formed on the inner surfaces of the lens substrates 16 and 17, respectively. The alignment layers 12 and 13 are coated on the surfaces of the ITO conductive layers 14 and 15.

  As shown in FIG. 4, after the first liquid crystal lens element 10 captures an image, an electric signal of the drive signal X <b> 1 is applied between the first electrode 141 and the second electrode 151. The refractive index of the liquid crystal 111 is modified, and the light beam of the photographed image is diffused through the concave lens-shaped light beam diffusion function of the liquid crystal 111 (FIG. 4), and the effect of this diffusion is the magnitude of the voltage of the drive signal X1. Controlled by

  See also FIG. The second liquid crystal lens element 20 of the present invention described above is placed at the rear end of the first liquid crystal lens element 10, and the form of the second liquid crystal lens element 20 is not limited, but in the present invention, a transmissive liquid crystal panel is used. As an example, the second liquid crystal lens element 20 includes at least one frame 21, a pair of alignment layers 22 and 23, at least a pair of ITO conductive layers 24 and 25, and at least a pair of lens substrates 26 and 27. Of these, the liquid crystal 211 is sealed in the frame 21, and the liquid crystal 211 is a polymer network liquid crystal.

  See also FIG. The principle of defining the optical characteristics of the concave lens by defining the liquid crystal 211 sealed in the frame 21 of the second liquid crystal lens element 20 is that a gray mask 114 is placed at the front end of the frame 21, A raster having a convex lens shape is formed, an ultraviolet light source 115 is provided at the front end of the gray mask 114, ultraviolet light is emitted from the ultraviolet light source 115 toward the gray mask 114, and this ultraviolet light is further passed through the gray mask 114 in the frame 21. A portion projected to the liquid crystal 211 and positioned at the front end of the frame 21 of the liquid crystal 211 is defined in the same shape as the convex lens (dotted line portion in FIG. 6), and thus the shape of the polymer molecule arrangement in the liquid crystal 211 is modified, and the shape As a convex lens, and as estimated from this, it is located at the front end of the frame 21 of the liquid crystal 211 Min also form another convex lens shape by the same ultraviolet light source 115 and the gray mask 114 (dotted line in FIG. 6).

  The alignment layers 22 and 23 described above are bonded to both sides of the frame 21 to seal the frame 21, the ITO conductive layer 24 is bonded to the outside of the alignment layer 22, and the other ITO conductive layer 25 is connected to the other. A first electrode 241 is provided on the ITO conductive layer 24, a second electrode 251 is provided on the ITO conductive layer 25, and the first electrode 241 and the second electrode 251 are coupled to each other. By passing different bias voltages or drive power supplies, the refractive index of the liquid crystal 211 in the frame 21 is altered. The lens substrate 26 is coupled to the outside of the ITO conductive layer 24, the lens substrate 26 is a planar lens, the lens substrate 27 is coupled to the outside of the ITO conductive layer 25, and the lens substrate 27 is a planar lens.

  There is no limitation on the coupling method between the alignment layers 22 and 23, the ITO conductive layers 24 and 25, and the lens substrates 26 and 27. However, in the present invention, the ITO conductive layers 24 and 25 are formed on the inner surfaces of the lens substrates 26 and 27, respectively. The alignment layers 22 and 23 are coated on the surfaces of the ITO conductive layers 24 and 25.

  After the second liquid crystal lens element 20 captures an image, an electric signal of the drive signal X2 is applied between the first electrode 241 and the second electrode 251, thereby changing the refractive index of the liquid crystal 211 in the frame 21. In addition, the light beam of the photographed image is converged through the convex lens-shaped light beam converging function of the liquid crystal 211 (FIG. 6), and the effect of this convergence is controlled by the magnitude of the voltage of the drive signal X2.

  The above-mentioned first liquid crystal lens element 10 is not fixedly defined to a double-sided concave lens, but can be changed to a concave lens with one surface being concave and the other surface being flat or convex depending on optical photography requirements. Similarly, the second liquid crystal lens element 20 is not fixedly defined by a double-sided convex lens, but can be changed to a convex lens with one surface being convex and the other surface being flat or concave according to an optical photographing request.

  FIG. 7 shows a second embodiment of the compound focus variable liquid crystal lens module 100 of the present invention. Among these, the first liquid crystal lens element 10 ′ and the second liquid crystal lens element are each defined as an aspheric lens (dotted line portion in FIG. 7), and are optically defined in different lens surface shapes due to optical changes of different photographing effects. By combining the lenses, it is possible to accurately control the photographic optical effect. On the other hand, it is possible to save time and cost for polishing and manufacturing the lens.

  FIG. 8 shows a third embodiment of the composite variable focus liquid crystal lens module 100 of the present invention. Among them, the first liquid crystal lens element 10 and the second liquid crystal lens element 20 are covered with a case 30, an incident hole 31 is provided at the front end of the case 30, and an imaging hole 32 is provided at the rear end. The photographed image is used to enter the lens substrate 16 of the first liquid crystal lens element 10, and the photographed image is transmitted from the lens substrate 17 after the light beam is diffused by the first liquid crystal lens element 10, and is sent to the second liquid crystal. By entering the lens substrate 26 of the lens element 20 and the light beam converging function of the second liquid crystal lens element 20, as shown in FIG. 7, the captured image light beam of the human image 40 is sent from the lens substrate 27 to the imaging hole 32, A human image 40 ′ in which the image is enlarged and reduced in focus is obtained. The first electrode 141 and the second electrode 151 of the first liquid crystal lens element 10 described above, and the first electrode 241 and the second electrode 251 of the second liquid crystal lens element 20 protrude outside the case 30, respectively, and drive signal X1 and drive described above, respectively. Due to the above-described structure connected to the signal X2, the compound focus variable liquid crystal lens module 100 of the present invention forms a single module structure convenient for application.

  FIG. 9 shows another mode of operation for scaling and focusing similar to FIG. Among them, the head 41 of the human image 40 to be photographed and magnified is shown. The head 41 of the human image 40 is aimed from the entrance hole 31 of the case 30, and the image of the head 41 is sent from the entrance hole 31 to the first liquid crystal lens element. 10 enters the lens substrate 16, and after the light is diffused by the first liquid crystal lens element 10 and the image is enlarged, it is further sent from the lens substrate 17 and enters the lens substrate 26 of the second liquid crystal lens element 20. As shown in FIG. 5 from the two liquid crystal lens elements 20, the imaged light beam of the human image 40 is converged by the lens substrate 27 and then output to the imaging hole 32. Imaged. The image diffusion effect of the first liquid crystal lens element 10 and the convergence effect of the second liquid crystal lens element 20 are adjusted by the magnitudes of the driving signals X1 and X2, respectively.

  FIG. 10 shows a preferred application example of the composite variable focus liquid crystal lens module 100 of the present invention. Among them, the case 30 is coupled to the inside of the casing 210 of the camera-equipped mobile phone 200, the planar lens 311 is coupled to the incident hole 31 of the case 30, the planar lens 321 is coupled to the imaging hole 32, and the first liquid crystal lens. The first electrode 141 and the second electrode 151 of the element 10 and the first electrode 241 and the second electrode 251 of the second liquid crystal lens element 20 are connected to the liquid crystal lens driving circuit 300, respectively. The liquid crystal lens driving circuit 300 is shown in FIG. The drive signal X1 shown in FIG. 5 and the drive signal X2 shown in FIG. 5 can be emitted, and the first electrode 141 and the second electrode 151 of the first liquid crystal lens element 10, the first electrode 241 and the second electrode 241 of the second liquid crystal lens element 20 can be emitted. The scaling factor and the focus effect of the first liquid crystal lens element 10 and the second liquid crystal lens element 20 are adjusted by the magnitude of the voltage of the electric signal input to the two electrodes 251. It is.

  An image sensing processor 310 is connected to the liquid crystal lens driving circuit 300 to control the voltage level of an electric signal to the first liquid crystal lens element 10 and the second liquid crystal lens element 20 of the liquid crystal lens driving circuit 300, and The sensing processor 310 is connected to the rotary switch 32 and the push button switch 330. The rotary switch 32 is used as a photographed image magnification adjustment operation button of the camera-equipped mobile phone 200, and the push button switch 330 is used as a shutter button. It is used to capture the image by pressing again after adjusting the scale of the image and adjusting the focus.

  An image sensor 340 is provided behind the imaging hole 32 of the case 30, receives an imaging image sent through the plane lens 321 of the imaging hole 32 of the case 30, senses it, and outputs an initial image signal 341, and the image sensor 340 is connected to the image sensing processor 310, the initial image signal 341 is sent to the image sensing processor 310 for processing, and the image sensing processor 310 is connected to the first liquid crystal lens element 10 and the second liquid crystal lens element 10. This is used as a reference for enlargement / reduction magnification and focus effect control of the liquid crystal lens element 20.

  The liquid crystal lens driving circuit 300, the image sensing processor 310, and the image sensor 340 described above are matched in one integrated circuit or merged in the line of the camera-equipped mobile phone 200, and the rotation switch 320 and the push button switch 330 are combined. Can be aligned in the operation buttons of the camera-equipped mobile phone 200, and the above-mentioned modular compound variable focus liquid crystal lens module 100 of the present invention is coupled to the camera-equipped mobile phone 200 to drive the lens by a machine. Therefore, it can be driven by an electric signal to achieve the functions of enlargement / reduction and focus adjustment of captured images and industrial utility value.

  The compound focus variable liquid crystal lens module of the present invention shown in FIGS. 2 to 10 and the description thereof are presented to explain the technical contents and technical means of the present invention, and are a preferred embodiment of the present invention. The present invention is not limited to this, and the present invention is not limited to this. It is within the scope of the present invention to modify, change, or replace equivalent parts of the structure that can be made based on the present invention.

It is a structure display figure of a known camera focus adjustment mechanism. 1 is a structural diagram of a first embodiment of a composite variable focus liquid crystal lens module according to the present invention; FIG. It is a side view which shows the state by which the liquid crystal in the 1st liquid crystal lens element in this invention was defined by the concave lens shape. FIG. 3 is an enlarged cross-sectional view of a first liquid crystal lens element in FIG. 2. FIG. 3 is an enlarged cross-sectional view of a second liquid crystal lens element in FIG. 2. It is a side view which shows the state by which the liquid crystal in the 2nd liquid crystal lens element in this invention was demarcated by the convex lens shape. It is 2nd Example figure of this invention. It is 3rd Example figure of this invention. It is another operation example figure of the image expansion / contraction operation of this invention. It is a preferable example of application of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Compound focus variable liquid crystal lens module 10 1st liquid crystal lens element 10 '1st liquid crystal lens element 11 Frame 111 Liquid crystal 112 Gray mask 113 Ultraviolet light source 114 Gray mask 115 Ultraviolet light source 12 Alignment layer 13 Alignment layer 14 ITO conductive layer 141 1st Electrode 15 ITO conductive layer 151 Second electrode 16 Lens substrate 17 Lens substrate 20 Second liquid crystal lens element 20 ′ Second liquid crystal lens element 21 Frame 211 Liquid crystal 22 Alignment layer 23 Alignment layer 24 ITO conductive layer 241 First electrode 25 ITO conductive layer 251 Second electrode 26 Lens substrate 27 Lens substrate 30 Case 31 Entrance hole 311 Plane lens 32 Imaging hole 321 Plane lens 40 Human image 40 ′ Human image 41 Head 41 ′ Head 200 Mobile phone with camera 210 Casing 300 Liquid crystal lens driving circuit 310 Image sensing processor 320 Rotation switch 330 Push button switch 340 Image sensor 341 Initial image signal 1 Image enlargement / reduction adjustment mechanism 2 Casing 3 Optical lens 4 Image sensor X1 Drive signal X2 Drive signal

Claims (22)

The compound focus variable liquid crystal lens module
At least one first liquid crystal lens element including at least one frame, at least a pair of alignment layers, at least a pair of ITO conductive layers, and at least a pair of lens substrates, wherein liquid crystal is sealed in the frame, and the liquid crystal Are defined to form the optical characteristics of the concave lens, diffuse the photographic image light, and the two alignment layers are respectively bonded to both sides of the frame to seal the frame, and the two ITO conductive layers correspond to the corresponding alignment A first electrode and a second electrode are provided on the two ITO conductive layers, respectively, and a different bias voltage or driving power is applied between the first electrode and the second electrode. Thus, the refractive index of the liquid crystal in the frame is modified, whereby the liquid crystal in the frame diffuses the photographed image light beam, and the ITO conductive layer corresponding to the two lens substrates. Coupled to the outer, and said at least one first liquid crystal lens element,
At least one second liquid crystal lens element, including at least one frame, at least a pair of alignment layers, at least a pair of ITO conductive layers, and at least a pair of lens substrates, and within the frame of the second liquid crystal lens element Liquid crystal is encapsulated, the liquid crystal of the second liquid crystal lens element is defined to form the optical characteristics of a convex lens, and the photographed image light beam is converged, and the two alignment layers of the second liquid crystal lens element are respectively the second liquid crystal Coupled to both sides of the frame of the lens element to seal the frame of the second liquid crystal lens element, and the two ITO conductive layers of the second liquid crystal lens element correspond to the corresponding alignment layers of the second liquid crystal lens element The first electrode and the second electrode of the second liquid crystal lens element are provided on the two ITO conductive layers of the second liquid crystal lens element, respectively. By applying a different bias voltage or driving power in between, the refractive index of the liquid crystal in the frame of the second liquid crystal lens element is modified, whereby the liquid crystal in the frame of the second liquid crystal lens element is changed. The at least one second liquid crystal lens element that converges a photographed image light beam and two lens substrates of the second liquid crystal lens element are coupled to the outside of the corresponding ITO conductive layer of the second liquid crystal lens element; ,
A compound-type variable focus liquid crystal lens module comprising:   2. The composite variable focus liquid crystal lens module according to claim 1, wherein the first liquid crystal lens element is a transmissive liquid crystal panel.   2. The compound focus variable liquid crystal lens module according to claim 1, wherein the liquid crystal sealed in the frame of the first liquid crystal lens element is a polymer network liquid crystal.   4. The compound focus variable liquid crystal lens module according to claim 1, wherein the liquid crystal sealed in the frame in the first liquid crystal lens element is defined by the ultraviolet light emitted from the ultraviolet light source and irradiated through the gray mask, and is a concave lens. A compound focus variable liquid crystal lens module having an optical function.   2. The composite focus variable liquid crystal lens module according to claim 1, wherein an alignment layer in the first liquid crystal lens element is coated on a surface of an ITO conductive layer of the first liquid crystal lens element. Variable liquid crystal lens module.   2. The compound focus variable liquid crystal lens module according to claim 1, wherein an ITO conductive layer in the first liquid crystal lens element is coated on the inner side of the lens substrate of the first liquid crystal lens element. Variable liquid crystal lens module.   2. The composite variable focus liquid crystal lens module according to claim 1, wherein the second liquid crystal lens element is a transmissive liquid crystal panel.   2. The compound focus variable liquid crystal lens module according to claim 1, wherein the liquid crystal sealed in the frame of the second liquid crystal lens element is a polymer network liquid crystal.   9. The composite variable focus liquid crystal lens module according to claim 1, wherein the liquid crystal sealed in the frame in the second liquid crystal lens element is defined by the ultraviolet light emitted from the ultraviolet light source and irradiated through the gray mask, and is a convex lens. A compound focus variable liquid crystal lens module having an optical function.   2. The composite focus variable liquid crystal lens module according to claim 1, wherein an alignment layer in the second liquid crystal lens element is coated on a surface of an ITO conductive layer of the second liquid crystal lens element. Variable liquid crystal lens module.   2. The compound focus variable liquid crystal lens module according to claim 1, wherein the ITO conductive layer in the second liquid crystal lens element is coated on the inner side of the lens substrate of the second liquid crystal lens element. Variable liquid crystal lens module.   2. The compound focus variable liquid crystal lens module according to claim 1, wherein the first liquid crystal lens element and the second liquid crystal lens element are covered with a case.   13. The composite variable focus liquid crystal lens module according to claim 12, wherein an incident hole is provided at a front end of the case.   13. The composite variable focus liquid crystal lens module according to claim 12, wherein an imaging hole is provided at a rear end of the case.   2. The compound focus variable liquid crystal lens module according to claim 1, wherein the first electrode and the second electrode of the ITO conductive layer of the first liquid crystal lens element and the first electrode and the second electrode of the second liquid crystal lens element are driven signals, respectively. A compound-type variable focus liquid crystal lens module characterized by being connected to an input.   2. The compound focus variable liquid crystal lens module according to claim 1, wherein the first electrode and the second electrode of the ITO conductive layer of the first liquid crystal lens element and the first electrode and the second electrode of the second liquid crystal lens element are driven by a liquid crystal lens. A compound-type variable focus liquid crystal lens module characterized by being connected to a circuit.   17. The compound focus variable liquid crystal lens module according to claim 16, wherein the liquid crystal lens driving circuit is connected to an image sensing processor.   18. The compound focus variable liquid crystal lens module according to claim 17, wherein the image sensing processor is connected to a rotary switch.   18. The compound focus variable liquid crystal lens module according to claim 17, wherein the image sensing processor is connected to a push button switch.   18. The compound focus variable liquid crystal lens module according to claim 17, wherein the image sensing processor is connected to an image sensor.   2. The compound focus variable liquid crystal lens module according to claim 1, wherein an image sensor is provided at a rear end of the first liquid crystal lens element.   24. The compound focus variable liquid crystal lens module according to claim 21, wherein the image sensor outputs an initial image signal.

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