CN105527741A - Filter structure, method for changing cut-off wavelength of filter structure and camera module - Google Patents
Filter structure, method for changing cut-off wavelength of filter structure and camera module Download PDFInfo
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- CN105527741A CN105527741A CN201610089934.6A CN201610089934A CN105527741A CN 105527741 A CN105527741 A CN 105527741A CN 201610089934 A CN201610089934 A CN 201610089934A CN 105527741 A CN105527741 A CN 105527741A
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- liquid crystal
- filtering structure
- crystal layer
- coating
- coatings
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B11/00—Filters or other obturators specially adapted for photographic purposes
Abstract
The invention discloses a filter structure, a method for changing the cut-off wavelength of the filter structure and a camera module. The filter structure comprises a first plating, a liquid crystal layer located on the surface of the first plating, a second plating as well as electrodes connected with the liquid crystal layer, wherein liquid crystal molecules are contained in the liquid crystal layer; the second plating is located on one side, deviating from the first plating, of the liquid crystal layer; the electrodes are electrically connected with a processing chip and used for providing voltage for the liquid crystal layer. According to the filter structure provided by the embodiment, voltage with different amplitudes can be applied to the liquid crystal layer through the electrodes to change the arrangement angles of the liquid crystal molecules in the liquid crystal layer, so that the refractive index of the liquid crystal layer is changed, a wave band of light capable of penetrating through the filter structure is changed accordingly, and the cut-off wavelength of the filter structure is changed.
Description
Technical field
The present invention relates to optical element field, more particularly, relate to a kind of filtering structure, the method changing filtering structure cutoff wavelength and camera module.
Background technology
Optical filter is used to the optical device of the light selecting required wave band, and optical filter of the prior art normally by adding in plastics or glass sheet, make by special dye.For glass, the refractive index of glass sheet is originally similar to the refractive index of air, and all colored lights can be through.But after add dyestuff in glass sheet, the structure of glass molecule changes, and its refractive index also changes, to some coloured light through just there occurs change, thus to realize only through the object of the light of certain wave band.Light when we equal the transmitance of optical filter to 50% is defined as the cutoff wavelength of this optical filter, and the object by selecting the optical filter of different cutoff wavelength to be reached through the light of certain wave band.
Optical filter is applied in camera module usually, and user is according to shooting environmental or take different objects and select the optical filter of different cutoff wavelength to reach better shooting effect.But optical filter of the prior art only has a fixing cutoff wavelength usually, therefore need the optical filter arranging multiple different cutoff wavelength to meet the different demands of user in camera module, this can make camera module be difficult to realize miniaturization.
Therefore, a kind of optical filter that can change cutoff wavelength is needed badly.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of filtering structure, described filtering structure can change its cutoff wavelength.
For realizing above-mentioned technical purpose, embodiments provide following technical scheme:
A kind of filtering structure, be applied to camera module, described camera module comprises process chip; Described filtering structure comprises:
First coating;
Be positioned at the liquid crystal layer of described first coating surface, in described liquid crystal layer, there is liquid crystal molecule;
Be positioned at the second coating that described liquid crystal layer deviates from described first coating side;
The electrode be connected with described liquid crystal layer;
Described electrode is electrically connected with described process chip, for providing voltage for described liquid crystal layer.
Preferably, described first coating is polyethylene film layer or layers of polyvinyl chloride films or polyethylene terephthalate film layer.
Preferably, described second coating is polyethylene film layer or layers of polyvinyl chloride films or polyethylene terephthalate film layer.
Preferably, described liquid crystal layer comprises:
Liquid crystal coatings, described liquid crystal coatings is made up of liquid crystal molecule;
Be arranged at the stationary installation of described liquid crystal coatings surrounding, for being fixed on by described liquid crystal coatings between described first coating and the second coating;
Described stationary installation has through hole, and described electrode is electrically connected with described liquid crystal coatings by described through hole.
Preferably, described liquid crystal coatings is layered liquid crystal rete or wire liquid crystal coatings or cholesteric liquid hyaline layer or disc-like liquid crystal rete.
Change a method for filtering structure cutoff wavelength, comprising:
Filtering structure as described in above-described embodiment is provided;
The first voltage is applied to the liquid crystal layer of described filtering structure by the electrode of filtering structure;
The arrangement angle of liquid crystal molecule in described liquid crystal layer is changed by the amplitude changing described first voltage, thus change the refractive index of described filtering structure, and then change described filtering structure can through the wave band of light, reach the object of the cutoff wavelength changing described filtering structure.
A kind of camera module, comprising:
Substrate;
Be arranged at the sensitive chip of described substrate side;
Be arranged at the filtering structure that described sensitive chip deviates from described substrate side;
Be arranged at the camera lens that described filtering structure deviates from described sensitive chip side;
Be arranged at the base that described substrate deviates from described sensitive chip side;
The process chip be connected with described sensitive chip and filtering structure, described process chip is for providing the voltage of different amplitude for described filtering structure;
Described filtering structure is the filtering structure described in above-described embodiment.
Preferably, described filtering structure comprises:
First coating;
Be positioned at the liquid crystal layer of described first coating surface, in described liquid crystal layer, there is liquid crystal molecule;
Be positioned at the second coating that described liquid crystal layer deviates from described first coating side;
The electrode be connected with described liquid crystal layer;
Described electrode is electrically connected with described process chip, for providing voltage for described liquid crystal layer.
Preferably, described liquid crystal layer comprises:
Liquid crystal coatings, described liquid crystal coatings is made up of liquid crystal molecule;
Be arranged at the protective device of described liquid crystal coatings surrounding, for being fixed on by described liquid crystal coatings between described first coating and the second coating;
Described protective device has through hole, and described electrode is electrically connected with described liquid crystal coatings by described through hole.
Preferably, described liquid crystal coatings is layered liquid crystal rete or wire liquid crystal coatings or cholesteric liquid hyaline layer or disc-like liquid crystal rete.
As can be seen from technique scheme, embodiments provide a kind of filtering structure, the method changing filtering structure cutoff wavelength and camera module, wherein, described filtering structure comprises the first coating; Be positioned at the liquid crystal layer of described first coating surface, in described liquid crystal layer, there is liquid crystal molecule; Be positioned at the second coating that described liquid crystal layer deviates from described first coating side; The electrode be connected with described liquid crystal layer; Described electrode is electrically connected with described process chip, for providing voltage for described liquid crystal layer.Inventor studies discovery, and because liquid crystal molecule has the characteristic of refractive anisotrop, the voltage applying different amplitude to liquid crystal molecule can make the arrangement angle of liquid crystal molecule change, and then the refractive index of layer of liquid crystal molecule is changed.Therefore the filtering structure that provides of the embodiment of the present invention can change the arrangement angle of liquid crystal molecule in described liquid crystal layer to the voltage that described liquid crystal layer applies different amplitude by described electrode, thus change the refractive index of described liquid crystal layer, and then change described filtering structure can through the wave band of light, reach the object of the cutoff wavelength changing described filtering structure.
Further, the camera module with the filtering structure that the embodiment of the present invention provides can by changing the voltage being applied to liquid crystal layer in described filtering structure, and then change the cutoff wavelength of described filtering structure, a filtering structure just can meet described camera module shooting demand under various circumstances, and described camera module does not need the plant equipment changing filtering structure, makes the volume of described camera module less.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The structural representation of a kind of filtering structure that Fig. 1 provides for one embodiment of the present of invention;
The structural representation of a kind of liquid crystal layer that Fig. 2 provides for one embodiment of the present of invention;
A kind of schematic flow sheet changing the method for filtering structure cutoff wavelength that Fig. 3 provides for one embodiment of the present of invention;
The structural representation of a kind of camera module that Fig. 4 provides for one embodiment of the present of invention.
Embodiment
As described in background, filtering structure of the prior art only has a fixing cutoff wavelength, and need the filtering structure of multiple different cutoff wavelength just can meet the requirement of camera module, this can make camera module be difficult to realize miniaturization.
In view of this, embodiments provide a kind of filtering structure, be applied to camera module, described camera module comprises process chip; Described filtering structure comprises:
First coating;
Be positioned at the liquid crystal layer of described first coating surface, in described liquid crystal layer, there is liquid crystal molecule;
Be positioned at the second coating that described liquid crystal layer deviates from described first coating side;
The electrode be connected with described liquid crystal layer;
Described electrode is electrically connected with described process chip, for providing voltage for described liquid crystal layer.
Accordingly, the embodiment of the present invention additionally provides a kind of method changing filtering structure cutoff wavelength, comprising:
Filtering structure as described in above-described embodiment is provided;
The first voltage is applied to the liquid crystal layer of described filtering structure by the electrode of filtering structure;
The arrangement angle of liquid crystal molecule in described liquid crystal layer is changed by the amplitude changing described first voltage, thus change the refractive index of described filtering structure, and then change described filtering structure can through the wave band of light, reach the object of the cutoff wavelength changing described filtering structure.
Accordingly, the embodiment of the present invention additionally provides a kind of camera module, comprising:
Substrate;
Be arranged at the sensitive chip of described substrate side;
Be arranged at the filtering structure that described sensitive chip deviates from described substrate side;
Be arranged at the camera lens that described filtering structure deviates from described sensitive chip side;
Be arranged at the base that described substrate deviates from described sensitive chip side;
The process chip be connected with described sensitive chip and filtering structure, described process chip is for providing the voltage of different amplitude for described filtering structure;
Described filtering structure is the filtering structure described in above-described embodiment.
As can be seen from technique scheme, embodiments provide a kind of filtering structure, the method changing filtering structure cutoff wavelength and camera module, wherein, described filtering structure comprises the first coating; Be positioned at the liquid crystal layer of described first coating surface, in described liquid crystal layer, there is liquid crystal molecule; Be positioned at the second coating that described liquid crystal layer deviates from described first coating side; The electrode be connected with described liquid crystal layer; Described electrode is electrically connected with described process chip, for providing voltage for described liquid crystal layer.Inventor studies discovery, and because liquid crystal molecule has the characteristic of refractive anisotrop, the voltage applying different amplitude to liquid crystal molecule can make the arrangement angle of liquid crystal molecule change, and then the refractive index of layer of liquid crystal molecule is changed.Therefore the filtering structure that provides of the embodiment of the present invention can change the arrangement angle of liquid crystal molecule in described liquid crystal layer to the voltage that described liquid crystal layer applies different amplitude by described electrode, thus change the refractive index of described liquid crystal layer, and then change described filtering structure can through the wave band of light, reach the object of the cutoff wavelength changing described filtering structure.
Further, the camera module with the filtering structure that the embodiment of the present invention provides can by changing the voltage being applied to liquid crystal layer in described filtering structure, and then change the cutoff wavelength of described filtering structure, a filtering structure just can meet described camera module shooting demand under various circumstances, and described camera module does not need the plant equipment changing filtering structure, makes the volume of described camera module less.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiments provide a kind of filtering structure, be applied to camera module, described camera module comprises process chip; As shown in Figure 1, described filtering structure comprises:
First coating 100;
Be positioned at the liquid crystal layer 200 on described first coating 100 surface, in described liquid crystal layer 200, there is liquid crystal molecule;
Be positioned at the second coating 300 that described liquid crystal layer 200 deviates from described first coating 100 side;
The electrode 400 be connected with described liquid crystal layer 200;
Described electrode 400 is electrically connected with described process chip, for providing voltage for described liquid crystal layer 200.
It should be noted that, inventor studies discovery, because liquid crystal molecule has the characteristic of refractive anisotrop, the voltage applying different amplitude to liquid crystal molecule can make the arrangement angle of liquid crystal molecule change, and then the refractive index of layer of liquid crystal molecule is changed.Therefore in the present embodiment, described process chip is used for providing voltage for described liquid crystal layer 200, when the camera module possessing described filtering structure needs the filtering structure of different cutoff wavelength, the voltage of different amplitude can be applied to described liquid crystal layer 200 by described process chip, the arrangement angle of liquid crystal molecule in liquid crystal layer 200 is changed, thus change the refractive index of described liquid crystal layer 200, and then change described filtering structure can through the wave band of light, reach the object of the cutoff wavelength changing described filtering structure.
Also it should be noted that, in the present embodiment, described electrode 400 is metal electrode 400; But in other embodiments of the invention, described electrode 400 is conductive film electrode 400.In a preferred embodiment of the invention, described electrode 400 is aluminium electrode 400; In another embodiment of the present invention, described electrode 400 is graphite electrode 400 or gold electrode 400 or silver electrode 400 or electric conductive oxidation indium tin thin film electrode 400.The present invention does not limit the material of described electrode 400 and concrete shape, as long as can be embodied as the function that described liquid crystal layer 200 provides voltage, specifically depending on actual conditions.
On the basis of above-described embodiment, in one embodiment of the invention, described first coating 100 is polyethylene film layer or layers of polyvinyl chloride films or polyethylene terephthalate film layer.
It should be noted that, described first coating 100 can pass through magnetron sputtering technique or thermal evaporation process or chemical synthesis process to be prepared, and the present invention does not limit, specifically depending on actual conditions the concrete material of described first coating 100 and preparation technology.
On the basis of above-described embodiment, in another embodiment of the present invention, described second coating 300 is polyethylene film layer or layers of polyvinyl chloride films or polyethylene terephthalate film layer.
Same, described second coating 300 can pass through magnetron sputtering technique or thermal evaporation process or chemical synthesis process to be prepared, and the present invention does not limit, specifically depending on actual conditions the concrete material of described second coating 300 and preparation technology.
It should be noted that, in one embodiment of the invention, described first coating 100 is identical with the material of described second coating 300; But in another embodiment of the present invention, described first coating 100 is different from the material of described second coating 300.The present invention does not limit this, specifically depending on actual conditions.
On the basis of above-described embodiment, in yet another embodiment of the present invention, as shown in Figure 2, described liquid crystal layer 200 comprises:
Liquid crystal coatings 210, described liquid crystal coatings 210 is made up of liquid crystal molecule;
Be arranged at the stationary installation 220 of described liquid crystal coatings 210 surrounding, for being fixed on by described liquid crystal coatings 210 between described first coating 100 and the second coating 300;
Described stationary installation 220 has through hole, and described electrode 400 is electrically connected with described liquid crystal coatings 210 by described through hole.
It should be noted that, the present embodiment provide only a kind of form of the composition of possible liquid crystal layer 200, and the concrete formation of the present invention to described liquid crystal layer 200 does not limit, specifically depending on actual conditions.
Also it should be noted that, in one embodiment of the invention, described stationary installation 220 is prepared from by polythene material.But in other embodiments of the invention, described stationary installation 220 can also be prepared from by pvc material or polyethylene terephthalate materials.The concrete constituent material of the present invention to described stationary installation 220 does not limit, specifically depending on actual conditions.
On the basis of above-described embodiment, in yet another embodiment of the present invention, described liquid crystal coatings 210 is layered liquid crystal rete 210 or wire liquid crystal coatings 210 or cholesteric liquid hyaline layer 210 or disc-like liquid crystal rete 210.The concrete kind of the present invention to described liquid crystal coatings 210 does not limit, specifically depending on actual conditions.
In sum, embodiments provide a kind of filtering structure, described filtering structure comprises the first coating 100; Be positioned at the liquid crystal layer 200 on described first coating 100 surface, in described liquid crystal layer 200, there is liquid crystal molecule; Be positioned at the second coating 300 that described liquid crystal layer 200 deviates from described first coating 100 side; The electrode 400 be connected with described liquid crystal layer 200; Described electrode 400 is electrically connected with described process chip, for providing voltage for described liquid crystal layer 200.Inventor studies discovery, and because liquid crystal molecule has the characteristic of refractive anisotrop, the voltage applying different amplitude to liquid crystal molecule can make the arrangement angle of liquid crystal molecule change, and then the refractive index of layer of liquid crystal molecule is changed.Therefore the filtering structure that the embodiment of the present invention provides can change the arrangement angle of liquid crystal molecule in described liquid crystal layer 200 to the voltage that described liquid crystal layer 200 applies different amplitude by described electrode 400, thus change the refractive index of described liquid crystal layer 200, and then change described filtering structure can through the wave band of light, reach the object of the cutoff wavelength changing described filtering structure.
Further, the camera module with the filtering structure that the embodiment of the present invention provides can by changing the voltage being applied to liquid crystal layer 200 in described filtering structure, and then change the cutoff wavelength of described filtering structure, a filtering structure just can meet described camera module shooting demand under various circumstances, and described camera module does not need the plant equipment changing filtering structure, makes the volume of described camera module less.
Accordingly, the embodiment of the present invention additionally provides a kind of method changing filtering structure cutoff wavelength, as shown in Figure 3, comprising:
S101: the filtering structure as described in above-mentioned any embodiment is provided;
S102: apply the first voltage to the liquid crystal layer 200 of described filtering structure by the electrode 400 of filtering structure;
S103: the arrangement angle being changed liquid crystal molecule in described liquid crystal layer 200 by the amplitude changing described first voltage, thus change the refractive index of described filtering structure, and then change described filtering structure can through the wave band of light, reach the object of the cutoff wavelength changing described filtering structure.
It should be noted that, the amplitude of described first voltage can be changed by process chip, also can be changed the amplitude of described first voltage by microprocessor.The present invention does not limit this, specifically depending on actual conditions.
Accordingly, the embodiment of the present invention additionally provides a kind of camera module, as shown in Figure 4, comprising:
Substrate 13;
Be arranged at the sensitive chip 12 of described substrate 13 side;
Be arranged at the filtering structure 15 that described sensitive chip 12 deviates from described substrate 13 side;
Be arranged at the camera lens 11 that described filtering structure 15 deviates from described sensitive chip 12 side;
Be arranged at the base 14 that described substrate 13 deviates from described sensitive chip 12 side;
The process chip be connected with described sensitive chip 12 and filtering structure 15, described process chip is for providing the voltage of different amplitude for described filtering structure 15;
Described filtering structure 15 is the filtering structure 15 described in above-mentioned any embodiment.
It should be noted that, described substrate 13 includes but not limited to hard circuit board, flexible PCB, glass plate, PMMA plate; Described sensitive chip 12 is Charged Couple sensitive chip 12 or metal-oxide semiconductor (MOS) sensitive chip 12; Described camera lens 11 includes but not limited to plastic cement camera lens 11, glass lens 11; The concrete kind of the present invention to described substrate 13, sensitive chip 12, camera lens 11 does not limit, specifically depending on actual conditions.Because the operation and flow process of assembling described camera module are well known to those skilled in the art, the present invention does not repeat at this.
On the basis of above-described embodiment, in one embodiment of the invention, described filtering structure 15 comprises:
First coating 100;
Be positioned at the liquid crystal layer 200 on described first coating 100 surface, in described liquid crystal layer 200, there is liquid crystal molecule;
Be positioned at the second coating 300 that described liquid crystal layer 200 deviates from described first coating 100 side;
The electrode 400 be connected with described liquid crystal layer 200;
Described electrode 400 is electrically connected with described process chip, for providing voltage for described liquid crystal layer 200.
It should be noted that, inventor studies discovery, because liquid crystal molecule has the characteristic of refractive anisotrop, the voltage applying different amplitude to liquid crystal molecule can make the arrangement angle of liquid crystal molecule change, and then the refractive index of layer of liquid crystal molecule is changed.Therefore in the present embodiment, described process chip is used for providing voltage for described liquid crystal layer 200, when the camera module possessing described filtering structure 15 needs the filtering structure 15 of different cutoff wavelength, the voltage of different amplitude can be applied to described liquid crystal layer 200 by described process chip, the arrangement angle of liquid crystal molecule in liquid crystal layer 200 is changed, thus change the refractive index of described liquid crystal layer 200, and then change described filtering structure 15 can through the wave band of light, reach the object of the cutoff wavelength changing described filtering structure 15.
Also it should be noted that, in the present embodiment, described electrode 400 is metal electrode 400; But in other embodiments of the invention, described electrode 400 is conductive film electrode 400.In a preferred embodiment of the invention, described electrode 400 is aluminium electrode 400; In another embodiment of the present invention, described electrode 400 is graphite electrode 400 or gold electrode 400 or silver electrode 400 or electric conductive oxidation indium tin thin film electrode 400.The present invention does not limit the material of described electrode 400 and concrete shape, as long as can be embodied as the function that described liquid crystal layer 200 provides voltage, specifically depending on actual conditions.
On the basis of above-described embodiment, in one embodiment of the invention, described first coating 100 is polyethylene film layer or layers of polyvinyl chloride films or polyethylene terephthalate film layer.
It should be noted that, described first coating 100 can pass through magnetron sputtering technique or thermal evaporation process or chemical synthesis process to be prepared, and the present invention does not limit, specifically depending on actual conditions the concrete material of described first coating 100 and preparation technology.
On the basis of above-described embodiment, in another embodiment of the present invention, described second coating 300 is polyethylene film layer or layers of polyvinyl chloride films or polyethylene terephthalate film layer.
Same, described second coating 300 can pass through magnetron sputtering technique or thermal evaporation process or chemical synthesis process to be prepared, and the present invention does not limit, specifically depending on actual conditions the concrete material of described second coating 300 and preparation technology.
It should be noted that, in one embodiment of the invention, described first coating 100 is identical with the material of described second coating 300; But in another embodiment of the present invention, described first coating 100 is different from the material of described second coating 300.The present invention does not limit this, specifically depending on actual conditions.
On the basis of above-described embodiment, in yet another embodiment of the present invention, as shown in Figure 2, described liquid crystal layer 200 comprises:
Liquid crystal coatings 210, described liquid crystal coatings 210 is made up of liquid crystal molecule;
Be arranged at the stationary installation 220 of described liquid crystal coatings 210 surrounding, for being fixed on by described liquid crystal coatings 210 between described first coating 100 and the second coating 300;
Described stationary installation 220 has through hole, and described electrode 400 is electrically connected with described liquid crystal coatings 210 by described through hole.
It should be noted that, the present embodiment provide only a kind of form of the composition of possible liquid crystal layer 200, and the concrete formation of the present invention to described liquid crystal layer 200 does not limit, specifically depending on actual conditions.
Also it should be noted that, in one embodiment of the invention, described stationary installation 220 is prepared from by polythene material.But in other embodiments of the invention, described stationary installation 220 can also be prepared from by pvc material or polyethylene terephthalate materials.The concrete constituent material of the present invention to described stationary installation 220 does not limit, specifically depending on actual conditions.
On the basis of above-described embodiment, in yet another embodiment of the present invention, described liquid crystal coatings 210 is layered liquid crystal rete 210 or wire liquid crystal coatings 210 or cholesteric liquid hyaline layer 210 or disc-like liquid crystal rete 210.The concrete kind of the present invention to described liquid crystal coatings 210 does not limit, specifically depending on actual conditions.
In sum, embodiments provide a kind of filtering structure 15, the method changing filtering structure 15 cutoff wavelength and camera module, wherein, described filtering structure 15 comprises the first coating 100; Be positioned at the liquid crystal layer 200 on described first coating 100 surface, in described liquid crystal layer 200, there is liquid crystal molecule; Be positioned at the second coating 300 that described liquid crystal layer 200 deviates from described first coating 100 side; The electrode 400 be connected with described liquid crystal layer 200; Described electrode 400 is electrically connected with described process chip, for providing voltage for described liquid crystal layer 200.Inventor studies discovery, and because liquid crystal molecule has the characteristic of refractive anisotrop, the voltage applying different amplitude to liquid crystal molecule can make the arrangement angle of liquid crystal molecule change, and then the refractive index of layer of liquid crystal molecule is changed.Therefore the filtering structure 15 that the embodiment of the present invention provides can change the arrangement angle of liquid crystal molecule in described liquid crystal layer 200 to the voltage that described liquid crystal layer 200 applies different amplitude by described electrode 400, thus change the refractive index of described liquid crystal layer 200, and then change described filtering structure 15 can through the wave band of light, reach the object of the cutoff wavelength changing described filtering structure 15.
Further, the camera module with the filtering structure 15 that the embodiment of the present invention provides can by changing the voltage being applied to liquid crystal layer 200 in described filtering structure 15, and then change the cutoff wavelength of described filtering structure 15, a filtering structure 15 just can meet described camera module shooting demand under various circumstances, and described camera module does not need the plant equipment changing filtering structure 15, makes the volume of described camera module less.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a filtering structure, is applied to camera module, and described camera module comprises process chip; It is characterized in that, described filtering structure comprises:
First coating;
Be positioned at the liquid crystal layer of described first coating surface, in described liquid crystal layer, there is liquid crystal molecule;
Be positioned at the second coating that described liquid crystal layer deviates from described first coating side;
The electrode be connected with described liquid crystal layer;
Described electrode is electrically connected with described process chip, for providing voltage for described liquid crystal layer.
2. filtering structure according to claim 1, is characterized in that, described first coating is polyethylene film layer or layers of polyvinyl chloride films or polyethylene terephthalate film layer.
3. filtering structure according to claim 1, is characterized in that, described second coating is polyethylene film layer or layers of polyvinyl chloride films or polyethylene terephthalate film layer.
4. filtering structure according to claim 1, is characterized in that, described liquid crystal layer comprises:
Liquid crystal coatings, described liquid crystal coatings is made up of liquid crystal molecule;
Be arranged at the stationary installation of described liquid crystal coatings surrounding, for being fixed on by described liquid crystal coatings between described first coating and the second coating;
Described stationary installation has through hole, and described electrode is electrically connected with described liquid crystal coatings by described through hole.
5. filtering structure according to claim 4, is characterized in that, described liquid crystal coatings is layered liquid crystal rete or wire liquid crystal coatings or cholesteric liquid hyaline layer or disc-like liquid crystal rete.
6. change a method for filtering structure cutoff wavelength, it is characterized in that, comprising:
Filtering structure as described in any one of claim 1-5 is provided;
The first voltage is applied to the liquid crystal layer of described filtering structure by the electrode of filtering structure;
The arrangement angle of liquid crystal molecule in described liquid crystal layer is changed by the amplitude changing described first voltage, thus change the refractive index of described filtering structure, and then change described filtering structure can through the wave band of light, reach the object of the cutoff wavelength changing described filtering structure.
7. a camera module, is characterized in that, comprising:
Substrate;
Be arranged at the sensitive chip of described substrate side;
Be arranged at the filtering structure that described sensitive chip deviates from described substrate side;
Be arranged at the camera lens that described filtering structure deviates from described sensitive chip side;
Be arranged at the base that described substrate deviates from described sensitive chip side;
The process chip be connected with described sensitive chip and filtering structure, described process chip is for providing the voltage of different amplitude for described filtering structure;
Described filtering structure is the filtering structure described in any one of claim 1-5.
8. camera module according to claim 7, is characterized in that, described filtering structure comprises:
First coating;
Be positioned at the liquid crystal layer of described first coating surface, in described liquid crystal layer, there is liquid crystal molecule;
Be positioned at the second coating that described liquid crystal layer deviates from described first coating side;
The electrode be connected with described liquid crystal layer;
Described electrode is electrically connected with described process chip, for providing voltage for described liquid crystal layer.
9. camera module according to claim 8, is characterized in that, described liquid crystal layer comprises:
Liquid crystal coatings, described liquid crystal coatings is made up of liquid crystal molecule;
Be arranged at the protective device of described liquid crystal coatings surrounding, for being fixed on by described liquid crystal coatings between described first coating and the second coating;
Described protective device has through hole, and described electrode is electrically connected with described liquid crystal coatings by described through hole.
10. camera module according to claim 9, is characterized in that, described liquid crystal coatings is layered liquid crystal rete or wire liquid crystal coatings or cholesteric liquid hyaline layer or disc-like liquid crystal rete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610089934.6A CN105527741A (en) | 2016-02-17 | 2016-02-17 | Filter structure, method for changing cut-off wavelength of filter structure and camera module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610089934.6A CN105527741A (en) | 2016-02-17 | 2016-02-17 | Filter structure, method for changing cut-off wavelength of filter structure and camera module |
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| CN105527741A true CN105527741A (en) | 2016-04-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106597733A (en) * | 2017-02-15 | 2017-04-26 | 安徽磐众信息科技有限公司 | Tunable filter-based information enhanced display system |
| CN107561823A (en) * | 2017-10-27 | 2018-01-09 | 信利光电股份有限公司 | A kind of camera device |
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| CN101366289A (en) * | 2006-01-20 | 2009-02-11 | 安奇逻辑股份有限公司 | Optical low pass filter and imaging device using the same |
| US20090268152A1 (en) * | 2008-04-25 | 2009-10-29 | Hon Hai Precision Industry Co., Ltd. | Liquid crystal lens and lens module having same |
| CN202043208U (en) * | 2011-03-07 | 2011-11-16 | 信利光电(汕尾)有限公司 | Camera module |
| CN203433172U (en) * | 2013-09-02 | 2014-02-12 | 信利光电股份有限公司 | Zoom lens |
| CN104423116A (en) * | 2013-08-21 | 2015-03-18 | 信利光电股份有限公司 | Zoom lens and camera shooting module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101366289A (en) * | 2006-01-20 | 2009-02-11 | 安奇逻辑股份有限公司 | Optical low pass filter and imaging device using the same |
| US20090268152A1 (en) * | 2008-04-25 | 2009-10-29 | Hon Hai Precision Industry Co., Ltd. | Liquid crystal lens and lens module having same |
| CN202043208U (en) * | 2011-03-07 | 2011-11-16 | 信利光电(汕尾)有限公司 | Camera module |
| CN104423116A (en) * | 2013-08-21 | 2015-03-18 | 信利光电股份有限公司 | Zoom lens and camera shooting module |
| CN203433172U (en) * | 2013-09-02 | 2014-02-12 | 信利光电股份有限公司 | Zoom lens |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106597733A (en) * | 2017-02-15 | 2017-04-26 | 安徽磐众信息科技有限公司 | Tunable filter-based information enhanced display system |
| CN106597733B (en) * | 2017-02-15 | 2019-04-02 | 安徽磐众信息科技有限公司 | A kind of information enhancement display system based on tuning filter |
| CN107561823A (en) * | 2017-10-27 | 2018-01-09 | 信利光电股份有限公司 | A kind of camera device |
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Application publication date: 20160427 |