Compound adjustable focal length formula liquid crystal camera lens
One, technical field
The utility model relates to camera installation, relates in particular to a kind of digital camera or camera cell phone of being applied to, and has the compound adjustable focal length formula liquid crystal camera lens that the lens one is combined into single module.
Two, background technology
Existing machinery formula zoom lens generally includes at least two motion assemblies, and one is the optical module of enlargement ratio and focusing, another person be by miniature motor non-linear or Linear Driving displacement to change the mechanical component of focal length.In portable electronic/communicator now, be subjected to limited application space and length restriction, zoom lens can't amplify and reduction magnification between, make the move operation of too big distance.
It is little and in light weight that a kind of existing adjustable liquid crystal camera lens (TUNABLE LIQUlD CRYSTAL LENS) can meet volume, not motion assembly and the requirement of assembling easily.Existing adjustable liquid crystal camera lens develops and uses a period of time, and this adjustable liquid crystal camera lens is added in by different voltage on the electrode of liquid crystal layer, produces different refractive index and focal length.
But above-mentioned existing adjustable liquid crystal camera lens is in application process, owing to must the fit lens system can carry out the phtographic lens application, generally include several lens, and the material of lens is plastics or glass, and the quantity of lens depends on resolution or other camera function.Just the simplest photography applications effect at last, as be applied in digital camera or camera cell phone, the lens numbers of this existing required cooperation of adjustable liquid crystal camera lens must be 2,3 or 4 usually; If promote the camera function design, must surpass 4 Essential Performance Requirements that just can meet photo-optics more than the lens usually.Therefore, existing adjustable liquid crystal camera lens is in modular making or application process, many adverse factors are arranged, and assembling is arranged and manufacturing process as complicated lens, adds the lens subassembly that needs configuration a large amount of, increase and adjust and check and approve operation, do not make the production acceptance rate good and production cost is higher, if essential the cooperation as the zoom lens module assembling of digital camera or camera cell phone, Assembling Production will be more difficult, must expend more man-hour, manpower and cost, be unfavorable for the industry utilization.
Above-mentioned existing adjustable liquid crystal camera lens another problem on using is that the quality of this liquid crystal material differs, and polarization (polarization) shortcoming that produces because of the liquid crystal material problem is arranged, and causes image photography and extracted quality to be affected.
In addition, patent formerly and technical literature aspect, as the 4th, 037, No. 927 cases of U.S.'s patent of invention, the voltage that discloses by changing electrode changes refractive index; U.S.'s patent of invention the 4th, 190, No. 330, No. the 4th, 572,616, U.S.'s patent of invention, U.S.'s patent of invention the 4th, 795, No. 248, No. the 5th, 047,847, U.S.'s patent of invention, U.S.'s patent of invention the 5th, the liquid crystal lens construction is described and disclosed to case such as 150, No. 234 with convex surface or concave surface basic unit with use the technology of different impressed voltages with the generation focal length.Constructedly also be disclosed in the Japanese and help rattan (Sato) in the 18th phase the 9th page of 1679-1684 of the academic monthly magazine of " by the liquid crystal lens unit cell zoom " in September, 1979 Japanese applied physics.
The 4th, 572, No. 612 cases of U.S.'s patent of invention have disclosed the technology of setting up a series of transmission electrode and forming compound adjustable focal length formula liquid crystal camera lens by these electrodes.In other " varifocal cylindrical liquid crystal camera lens " of in 2005 the 44th phases 1A number Japanese applied physics monthly magazine 243-244 page or leaf, delivering as people (Lin etal.) such as Japanese woodss in the literary composition, disclose the ITO electrode and be coated with in the basic unit that is plated in different both sides and reach the effect that different focal obtains.
The 5th, 124, No. 836 cases of U.S.'s patent of invention, the 6th, 437, No. 925 cases of U.S.'s patent of invention then disclose a new method, increase the liquid crystal camera lens basic unit of some material Tu with the compensation curved surface in liquid crystal layer.
U.S.'s patent of invention the 4th, 907, No. 860 cases, U.S.'s patent of invention the 5th, 299, No. 289 cases, U.S.'s patent of invention the 5th, 764, No. 317 cases, U.S.'s patent of invention the 6th, 061, No. 107 cases, U.S.'s patent of invention the 6th, 072, No. 107 case has disclosed forms the method for liquid crystal droplets, but is not the application technology about camera lens.
The 6th, 218, No. 679 cases of U.S.'s patent of invention have disclosed connatural liquid crystal droplets and have possessed very little wavelength, and can diffusion light and visible light transmissive.The 6th, 331, No. 881 cases of U.S.'s patent of invention mention, the liquid crystal layer of forming by resin and cholesteric liquid crystal material potpourri, but its can reflect visible light.
The 6th, 859, No. 333 cases of U.S.'s patent of invention, disclosed a kind of adjustable liquid crystal camera lens technology, be the existing camera lens of a kind of typical case, be coated in the basic unit of concave surface or convex shape, and be added on the ITO electrode and produce the refractive index of liquid crystal camera lens by different voltage by the ITO electrode.
U.S.'s patent of invention the 6th, 864, No. 951 cases and the 7th, 042, No. 549 cases of U.S.'s patent of invention, disclose an adjustable liquid crystal camera lens, form in liquid crystal layer with dispersed LCD droplets by non-similar nano level polymkeric substance, and be exposed to the sun again in ultraviolet ray, lens construction is formed, and use different voltage and be added in electrode, to form the refractive index of camera lens.
No. 20050018127 case of U.S.'s disclosure of the Invention case, disclose the existing liquid crystal camera lens method of forming of a kind of typical case, mixed liquid crystal and polymeric material are added in electrode and use laser beam with fixed energies intensity while irradiating liquid crystal potpourri by different voltages, occupy sky in the liquid crystal layer to be guided in
Between and be the polymkeric substance of network structure same nature.
On June 15th, 2002 is by people such as Olivares-Perez, in the academic monthly magazine of optics, the 27th phase, in the 12nd page of 1022-1024 " the Cholesterol-oleate-dopped PDLC voltage controlledring projector " literary composition, then disclose PDLC is made heat treated, to form the technology that desired camera lens model and variation add different voltage by ultraviolet light.
Be coated with polarization problem as for disappearing, the 5th, 069, No. 813 cases of U.S.'s patent of invention have disclosed the orthogonally oriented structure of adjacent layer.
Three, utility model content
Fundamental purpose of the present utility model is to overcome the above-mentioned shortcoming that existing product exists, and a kind of compound adjustable focal length formula liquid crystal camera lens is provided, and can simplify compound adjustable focal length formula liquid crystal camera lens module structure and manufacture method thereof.
Second purpose of the present utility model is to provide a kind of compound adjustable focal length liquid crystal camera lens, simplifies the Assembling Production of making zoom lens module.
The 3rd purpose of the present utility model is to provide a kind of structure and mode of the compound adjustable focal length formula liquid crystal camera lens of being convenient to be assembled.
The 4th purpose of the present utility model is to provide a kind of compound adjustable focal length integral expression liquid crystal camera lens, makes the clear and careful image effect of photogra and image capture, and can solve the polarization problem that liquid crystal material produces.
The purpose of this utility model is realized by following technical scheme.
The compound adjustable focal length formula of the utility model liquid crystal camera lens is characterized in that, comprising: sealing perfusion has liquid crystal at least one Liquid Crystal Module, this Liquid Crystal Module; At least one pair of both alignment layers, this both alignment layers is incorporated into the Liquid Crystal Module both sides respectively; At least one pair of ITO conductive layer, be incorporated on the both alignment layers respectively, this ITO conductive layer is linked to one first electrode and second electrode respectively, this first electrode and second electrode link a power-supply unit, supply with the power supply of different voltages by power-supply unit, make two ITO conductive layers apply different DC voltage in Liquid Crystal Module by both alignment layers respectively, the refractive index and the focal length multiplying power size of control Liquid Crystal Module; At least one first lens, this first lens adhere are in an ITO conductive layer surface, make first lens form object lens and image is taken in the Liquid Crystal Module; At least one second lens, this second lens adhere are in another ITO conductive layer surface, make second lens form eyepiece and with the photographic image imaging in the Liquid Crystal Module.
Aforesaid compound adjustable focal length formula liquid crystal camera lens is characterized in that described ITO conductive layer coating is incorporated into the both alignment layers inside surface; Described ITO conductive layer internal layer coating both alignment layers.
Aforesaid compound adjustable focal length formula liquid crystal camera lens is characterized in that the power-supply unit that first electrode of described ITO conductive layer and second electrode are linked is the photography control circuit of digital camera; The power-supply unit that first electrode of described ITO conductive layer and second electrode are linked is the photography control circuit of camera cell phone.
Aforesaid compound adjustable focal length formula liquid crystal camera lens is characterized in that, described first lens are pasted in conjunction with the ITO conductive layer by transparent jelly; The described first lens internal layer coating ITO conductive layer.
Aforesaid compound adjustable focal length formula liquid crystal camera lens is characterized in that described first lens are spherical mirror; Described first lens are aspheric mirror.
Aforesaid compound adjustable focal length formula liquid crystal camera lens is characterized in that described second lens fit in the ITO conductive layer with transparent jelly; The described second lens internal layer coating ITO conductive layer.
Aforesaid compound adjustable focal length formula liquid crystal camera lens is characterized in that described second lens are spherical mirror; Described second lens are aspheric mirror.
The compound adjustable focal length formula of the utility model liquid crystal camera lens is characterized in that, comprising: sealable tank is marked with liquid crystal at least one pair of Liquid Crystal Module, each Liquid Crystal Module; Two pairs of both alignment layers, every pair of both alignment layers is incorporated into Liquid Crystal Module both sides respectively; Two pairs of ITO conductive layers, every pair of ITO conductive layer is incorporated into respectively on the both alignment layers of each Liquid Crystal Module both sides, the ITO conductive layer is linked to a pair of first electrode and a pair of second electrode respectively, this a pair of first electrode and a pair of second electrode link a power-supply unit, supply with different voltages by power-supply unit, make two pairs of ITO conductive layers apply different DC voltage in two Liquid Crystal Modules by both alignment layers respectively, the refractive index and the focal length multiplying power size of control Liquid Crystal Module; At least one central transparency carrier is incorporated between two conductive layers between two Liquid Crystal Modules, and central transparency carrier is incorporated between two Liquid Crystal Modules; At least one first lens, this first lens adhere are in the ITO of Liquid Crystal Module conductive layer surface, make first lens form object lens and image is taken in the Liquid Crystal Module; At least one second lens, this second lens adhere are in the ITO of another Liquid Crystal Module conductive layer surface, make second lens form eyepiece and with the photographic image imaging in the Liquid Crystal Module.
Aforesaid compound adjustable focal length formula liquid crystal camera lens is characterized in that described ITO conductive layer coating is incorporated into alignment layer surface; Described ITO conductive layer internal layer coating both alignment layers.
Aforesaid compound adjustable focal length formula liquid crystal camera lens is characterized in that, the power-supply unit that first electrode of described ITO conductive layer and second electrode link is the photography control circuit of digital camera; The power-supply unit that first electrode of described ITO conductive layer and second electrode are linked is the photography control circuit of camera cell phone.
Aforesaid compound adjustable focal length formula liquid crystal camera lens is characterized in that described central transparency carrier is a level crossing; Described central transparency carrier both sides coating conductive layer.
Aforesaid compound adjustable focal length formula liquid crystal camera lens is characterized in that described first lens fit in the ITO conductive layer by transparent jelly; The described first lens internal layer coating ITO conductive layer.
Aforesaid compound adjustable focal length formula liquid crystal camera lens is characterized in that described first lens are spherical mirror; Described first lens are aspheric mirror.
Aforesaid compound adjustable focal length formula liquid crystal camera lens is characterized in that described second lens fit in the ITO conductive layer by transparent jelly; The described second lens internal layer coating ITO conductive layer.
Aforesaid compound adjustable focal length formula liquid crystal camera lens is characterized in that described second lens are spherical mirror; Described second lens are aspheric mirror.
The beneficial effect of the compound adjustable focal length formula of the utility model liquid crystal camera lens is that it comprises: at least one Liquid Crystal Module, a pair of both alignment layers, a pair of ITO conductive layer and one first lens and one second lens; Wherein, these Liquid Crystal Module both sides are in conjunction with ITO conductive layer and both alignment layers, this ITO conductive layer coating is incorporated on the both alignment layers, and supply input one power supply between two ITO conductive layers, change refractive index and the focal length multiplying power of adjusting Liquid Crystal Module by supply voltage, these first lens and second lens are spherical mirror or aspheric mirror, and be incorporated into respectively on this ITO conductive layer, make first lens can provide the image photography to enter in the Liquid Crystal Module, refractive index and focal length multiplying power through Liquid Crystal Module are adjusted, again by second lens imaging, reach and the utlity model has lens one bluk recombination, easy to assembly, save cost and be convenient to the effect that industry is utilized.
Four, description of drawings
Fig. 1 is that first of the compound adjustable focal length formula of the utility model liquid crystal camera lens is implemented illustration.
Fig. 2 is a decomposition texture synoptic diagram shown in Figure 1.
Fig. 3 is that second of the compound adjustable focal length formula of this utility model liquid crystal camera lens is implemented illustration.
Fig. 4 a is the utility model structure for amplifying cut-open view, and the compound adjustable focal length formula liquid crystal camera lens left side Liquid Crystal Module in the displayed map 3 is through the state of gray-level mask mensuration and calibrating crystal polymkeric substance.
Fig. 4 b is the utility model structure for amplifying cut-open view, and the compound adjustable focal length formula liquid crystal camera lens left side Liquid Crystal Module in the displayed map 3 is through the state of gray-level mask mensuration and calibrating crystal polymkeric substance.
Fig. 4 c is the mensuration voltage and the curve relation figure of measuring refractive index among Fig. 4 a and Fig. 4 c.
Fig. 5 is the utility model preferred application illustration.
Major label description in figure: 100 compound adjustable focal length formula liquid crystal camera lenses, 10 Liquid Crystal Modules, 10 ' Liquid Crystal Module, 11 liquid crystal, 20 both alignment layers, 30 both alignment layers, 40 is the ITO conductive layer, 41 first electrodes, 50 is the ITO conductive layer, 51 second electrodes, 60 first lens, 70 second lens, 80 central transparency carriers, 101 gray-level masks, 102 light sources, 103 testing power supplies, V1 measures voltage, V2 measures voltage, RI measures refractive index, 200 direct current power supply unit, 300 direct current power supply unit, 400 mobile phones, 410 casings, 420 image processing integrated circuit, 421 liquid crystal display drive circuits.
Five, embodiment
Consult Fig. 1, shown in Figure 2, be first embodiment of the compound adjustable focal length formula of the utility model liquid crystal camera lens 100, this compound adjustable focal length formula liquid crystal camera lens 100 comprises at least one Liquid Crystal Module 10, and sealing perfusion has liquid crystal 11 in this Liquid Crystal Module 10; At least one pair of both alignment layers 20,30, this both alignment layers 20,30 is incorporated into Liquid Crystal Module 10 both sides; At least one pair of ITO conductive layer 40 and 50, be incorporated into respectively on both alignment layers 20 and 30, the mode that this ITO conductive layer 40 and 50 is incorporated into both alignment layers 20 and 30 is not limit, in the utility model be with ITO conductive layer 40 and 50 respectively coating be incorporated into both alignment layers 20 and 30 inside surfaces are example, combination that other is equivalent and structure also should belong to technology category of the present utility model.This ITO conductive layer 40 and 50 is linked to one first electrode 41 and second electrode 51 respectively, this first electrode 41 and second electrode 51 are for linking a power-supply unit 200, supply with the power supply of different voltages by this power-supply unit 200, power-supply unit 200 can be as the photography control circuit in the digital camera, or the photography control circuit in the camera cell phone, so that two ITO conductive layers 40 and 50 apply different voltages in this Liquid Crystal Module 10 by both alignment layers 20 and 30 respectively, with refractive index and the focal length multiplying power of controlling this Liquid Crystal Module 10, in other words, promptly be the light and shade of control as photographic lens, to function such as split-field filter head focal length when.At least one first lens 60 and second lens 70, the form of these first lens 60 and second lens 70 is not limit, and is convex lens in the utility model, and other also should belong to technology category of the present utility model as spherical mirror or aspheric mirror.These first lens 60 and second lens 70 are to adopt transparent jelly to paste respectively to fit in this ITO conductive layer 40 and 50 surfaces, make these first lens 60 can form object lens, image is taken in this Liquid Crystal Module 10, and second electrode 51 of first electrode 41 by above-mentioned ITO conductive layer 40 and ITO conductive layer 50 applies the DC voltage from direct current power supply unit 200, makes this image adjust and to image in after second lens 70 by different refractivity and focal length multiplying power size.
Consult shown in Figure 3, second embodiment for the compound adjustable focal length formula of the utility model liquid crystal camera lens 100, it comprises a pair of Liquid Crystal Module 10 and 10 ', the two pairs of both alignment layers 20 and 30, the two pairs of ITO conductive layers 40 and 50, at least one central transparency carrier 80, one first lens 60 and second lens 70, be equipped with liquid crystal 11 in this Liquid Crystal Module 10 and 10 ', these two pairs of both alignment layers 20 and 30 are linked to each Liquid Crystal Module 10 and 10 ' both sides respectively, these two pairs of ITO conductive layers 40 and 50 are incorporated into this both alignment layers 20 and 30 surfaces respectively, the form of central authorities' transparency carrier 80 is not limit, in the utility model with level crossing be its example explanation, other also should belong to technology category of the present utility model as with equivalent lens such as spherical mirror or aspheric mirrors.These central authorities' transparency carrier 80 two ends are linked to the ITO conductive layer 50 of two Liquid Crystal Modules 10 and 10 ' both sides respectively, and this central authorities' transparency carrier 80 is linked between two Liquid Crystal Modules 10 and 10 '.Above-mentioned two pairs of ITO conductive layers 40 and 50 link a pair of first electrode 41 and a pair of second electrode 51 respectively, this two couple first electrode 41 and second electrode 51 link a power-supply unit 300 respectively, this power-supply unit 300 can be supplied with different voltage and give two pairs of ITO conductive layers 40 and 50, the connection relationship of this both positive and negative polarity is not limit, as the utility model is to enumerate the anode that a pair of first electrode 40 is linked to power-supply unit 300, the negative terminal that this a pair of second electrode 50 is linked to power-supply unit 300 is an example, add all different voltage respectively via first electrode 41 and second electrode 51, control refractive index and the focal length multiplying power size of this Liquid Crystal Module 10 and 10 ' with control break.These first lens 60 link ITO conductive layer 40 surfaces of a Liquid Crystal Module 10 1 ends, its combination is with transparent jelly cohesive bond, these second lens 70 link ITO conductive layer 40 surfaces of another Liquid Crystal Module 10 ' one end, so that first lens 60 form object lens, and image is taken in Liquid Crystal Module 10, pass through central transparency carrier 80 and another Liquid Crystal Module 10 ' that arrives again, second lens 70 through Liquid Crystal Module 10 ' one end form the eyepiece effect, allow photographic image become after second lens 70, this photographic image is through the light and shade contrast of Liquid Crystal Module 10 and 10 ', far and near lens focus optics is adjusted and the optical compensation and the correcting action of central transparency carrier 80, makes this photographic image can solve and eliminate the polarization problem that is produced because of liquid crystal 11 materials when the 70 rear end imagings of second lens.
Unitized construction and mode that both alignment layers 20 and 30, ITO conductive layer 40 and 50 and first lens 60, second lens of above Fig. 1 to the of the present utility model compound adjustable focal length formula liquid crystal camera lens 100 shown in Figure 3 are 70, do not exceed with above-mentioned, as the unitized construction of 70 on this ITO conductive layer 40 and 50 and first lens 60, second lens for this ITO conductive layer 40 and 50 respectively coating be incorporated into first lens 60 and second lens, 70 internal layers; And, this both alignment layers 20 and 30 and this ITO conductive layer 40 and 50 s' unitized construction be that both alignment layers 20 and 30 is coated with and is plated on ITO conductive layer 40 and 50, Liquid Crystal Module 10 and 10 ' both sides are bonding respectively again or fit on both alignment layers 20 and 30.
Consult Fig. 4 a, shown in Fig. 4 b and Fig. 4 c, be two left sides in the compound adjustable focal length formula liquid crystal camera lens 100 shown in Figure 3, right Liquid Crystal Module 10 and 10 ' liquid crystal 11 polymkeric substance parametric measurement and calibration stepss, the announcement of this method is not in order to limit technology category of the present utility model, wherein, Liquid Crystal Module 10 and 10 ' is before the package assembly of finishing as shown in Figure 3, placed the rear of a gray-level mask (graylevelmask) 101 respectively separately, gray-level mask 101 the place aheads then are provided with a light source 102, this light source 102 is laser or ultraviolet light generator, with to gray-level mask 101 emission of lasering beam or ultraviolet light light beam, this laser beam or ultraviolet light beam expose to Liquid Crystal Module 10 (as Fig. 4 a) and 10 ' (as Fig. 4 b) again by gray-level mask 101, simultaneously, Liquid Crystal Module 10 and 10 ' first electrode 41 of the ITO conductive layer 40 by being incorporated into two ends as shown in Figure 3 and 51 at second electrode of ITO conductive layer 50 respectively adds a testing power supply 103, make this testing power supply 103 apply one to Liquid Crystal Module 10 and 10 ' simultaneously and measure voltage V1 and V2, by gray-level mask 101 and measure voltage V1 and V2 can obtain measuring curved line relation between voltage V1 and V2 and mensuration refractive index RI shown in Fig. 4 c, measure voltage V1 and V2 and mensuration refractive index RI curved line relation and planned a calibration left side as shown in Figure 3 according to this, polymkeric substance in the liquid crystal 11 in the Liquid Crystal Module 10 of right both sides and 10 ', as calibrate the polymkeric substance of adjusting liquid crystal 11 with polymer dispersion type liquid crystal (PDLC), make compound adjustable focal length formula liquid crystal camera lens 100 shown in Figure 3 can eliminate polarization shortcoming and the problem that causes because of liquid crystal polymer.
Consult the 5th figure, preferred application example for the compound adjustable focal length formula of the utility model liquid crystal camera lens 100, it discloses this compound adjustable focal length formula liquid crystal camera lens 100 in conjunction with casing 410 inside that are applied to a mobile phone 400, the image that compound adjustable focal length formula liquid crystal camera lens 100 is taken in via first lens 60 exports to after 70 imagings of second lens in the image processing integrated circuit 420 of mobile phone 400 and handles, include a liquid crystal display drive circuit 421 in this image processing integrated circuit 420, this first electrode 41 and second electrode 51 are linked to the photography control circuit (not shown) of the liquid crystal display drive circuit 421 or the mobile phone 400 of image processing integrated circuit 420, can be applied in the mobile phone 400 by the single modular structure of simplifying most, need not install other complicated lens assembly module again, make compound adjustable focal length formula liquid crystal camera lens 100 be applied to have small size in the mobile phone 400, be convenient to install the effect of manufacturing and industry utilization, and solve polarization problem as desire, then can adopt second embodiment of compound adjustable focal length formula liquid crystal camera lens 100 of the present utility model as shown in Figure 3, get so that more high-quality photographic image imaging and a word used in person's names to be provided.
Above-mentioned Fig. 1 is to the compound adjustable focal length formula of the utility model liquid crystal camera lens shown in Figure 5, the wherein explanation that is disclosed and graphic, be for ease of illustrating technology contents of the present invention and technological means, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.