CN104950476B - For the electric-controlled light-regulating unit and photographic device of photographic device - Google Patents

For the electric-controlled light-regulating unit and photographic device of photographic device Download PDF

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Publication number
CN104950476B
CN104950476B CN201410117260.7A CN201410117260A CN104950476B CN 104950476 B CN104950476 B CN 104950476B CN 201410117260 A CN201410117260 A CN 201410117260A CN 104950476 B CN104950476 B CN 104950476B
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China
Prior art keywords
light
light modulation
modulation film
photographic device
electric
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CN201410117260.7A
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CN104950476A (en
Inventor
周国华
丁雷
李稳稳
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Beijing Digital Zhitong Technology Co Ltd
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Beijing Digital Zhitong Technology Co Ltd
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/0102Constructional details, not otherwise provided for in this subclass
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00Optical devices or arrangements for the control of light using movable or deformable optical elements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/02Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/0121Operation of devices; Circuit arrangements, not otherwise provided for in this subclass
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B11/00Filters or other obturators specially adapted for photographic purposes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50Constructional details
    • H04N23/55Optical parts specially adapted for electronic image sensors; Mounting thereof

Abstract

The present invention proposes a kind of electric-controlled light-regulating unit and photographic device for photographic device.Photographic device(100)Including:Image acquisition unit(1), image processing unit(2)With electric-controlled light-regulating unit(3);Electric-controlled light-regulating unit(3)Including:The light-adjusting module of light modulation film composition(30), control module(31).Control module(31)With image processing unit(2)And light-adjusting module(30)It is bi-directionally connected, image acquisition unit(1)With image processing unit(2)Unidirectional connection, control module(31)Change light-adjusting module by adjusting the voltage on each light modulation film, translation light modulation film and/or changing the direction of light-adjusting module(30)Luminous flux, transmission region and polarization direction.The photographic device of the present invention(100)The image of high quality can be obtained, solves the problems, such as that changing luminous flux, transmission region and polarization direction must be realized by mechanical device, can be accomplished multi-functional superposition, Miniaturization Design, be met the demand of video monitoring.

Description

For the electric-controlled light-regulating unit and photographic device of photographic device
Technical field
The invention belongs to intelligent monitoring technology fields, are related to a kind of electric-controlled light-regulating unit and with the electric-controlled light-regulating unit Photographic device.
Background technology
Outdoor is mostly installed on for the video camera of monitoring field, diversity and variability due to outdoor occasion environment, It in order to obtain good quality monitoring, needs often to adjust luminous flux, selects transmission region and adjustment polarization direction, and these are logical It is often required for completing by special mechanical structure.For example, aperture and shutter is commonly used to adjust luminous flux, however have A little occasions can not use electronic aperture, shutter control can only be used alone, therefore can not meet the need of round-the-clock outdoor monitoring It asks.Meanwhile since CCD sizes are big in high definition camera, the available electronic aperture camera lens of high definition is fewer, and cost is also higher, It constrains the promotion of camera performance and popularizes.In addition, selection transmission region and adjustment polarization direction, it is also desirable to use individually Optical filter and polarized lenses take and replace trouble, can not meet the needs of intelligent transportation field real time monitoring.
Invention content
The present invention proposes a kind of electric-controlled light-regulating unit and photographic device for photographic device, passes through the electric-controlled light-regulating list Member(3)Adjustable photographic device(100)Luminous flux, transmission region and polarization direction, solve current aperture, optical filter, partially Shaking the switching of piece all must be by mechanical device come the problem of realization, and can accomplish that multiple functions are superimposed, Miniaturization Design, Meet the demand of intelligent transportation and safety-security area real time monitoring.
Electric-controlled light-regulating unit proposed by the present invention for photographic device(3), including:Light-adjusting module(30), including extremely Few two light modulation films;Control module(31), connect respectively at each light modulation film, be applied on each light modulation film with adjusting respectively Voltage, so as to adjust light-adjusting module(30)Luminous flux, transmission region and/or polarization direction.
Each light modulation film is passed through added with filtering coating with the light for allowing specific band.By making different light modulation films The selection of transmission region can be realized in light transmission.
Light-adjusting module of the present invention(30)The first combination(32)At least arranged by two light modulation films with overlapped way, Each light modulation film rectangular shaped and it is provided with individual sliding rail(310), light modulation film can be in control module(31)Control lower edge each From sliding rail(310)Translation.
Light-adjusting module of the present invention(30)Second of combination(33)It is at least made of two light modulation films, and multiple tune Light film is in same plane mutual cooperation and forms light-adjusting module to combine(30).
Electric-controlled light-regulating unit proposed by the present invention(3)Operation principle it is as follows:
Control module(31)By adjusting the voltage being applied on light modulation film, to adjust electric field of the loading in light modulation film both sides Intensity controls the molecules align mode inside light modulation film, and then adjusts luminous flux and/or the polarization direction of each light modulation film, with This simultaneously, control module(31)Also each light modulation film is can control along respective sliding rail(310)Mobile, two ways combines, and reaches Adjust light-adjusting module(30)Luminous flux and/or polarization direction purpose;
The light modulation film that this patent is related to all added with filtering coating, has the function of to select transmission region, works as light-adjusting module (30)When needing the light of special wave band, control module(31)Control light-adjusting module(30)Unwanted light modulation film is translated To both sides, the light modulation film of required light wave band can be penetrated to achieve the purpose that select transmission region by only retaining.
The present invention combines the light-adjusting module to be formed using a variety of light modulation films(30)It can make light-adjusting module(30)Luminous flux, thoroughly Optical band and/or the adjustable range of polarization direction are more accurate careful, conveniently adapt to various complex environments and light modulation demand.
The present invention proposes a kind of photographic device(100), including:Image acquisition unit(1), for acquiring image;Image Processing unit(2), to image acquisition unit(1)The image of acquisition is handled, and judges to enter image acquisition unit(1)Light It is whether suitable;Electric-controlled light-regulating unit(3), according to image processing unit(2)Judging result control enter image acquisition unit(1) Light luminous flux, transmission region and/or polarization direction.Wherein electric-controlled light-regulating unit is using provided by the invention above-mentioned automatically controlled Dimming unit(3).
Photographic device provided by the invention(100)Due to being equipped with above-mentioned electric-controlled light-regulating unit, thus can adjust as needed Section is into luminous flux, transmission region and/or the polarization direction of the light of photographic device, consequently facilitating photographic device obtains high quality Satisfactory image, meet intelligent transportation and safety-security area real time monitoring demand.
Description of the drawings
Fig. 1 is the photographic device of embodiment of the present invention(100)Structure diagram, including:Image acquisition unit(1), figure As processing unit(2)With electric-controlled light-regulating unit(3), electric-controlled light-regulating unit is by light-adjusting module(30)And control module(31)Composition;
Fig. 2 is the light-adjusting module of embodiment of the present invention(30)The first structure diagram, by multilayer light modulation film and cunning Rail(310)Composition;
Fig. 3 is second of structure diagram of the light-adjusting module of embodiment of the present invention, is in same by multiple light modulation films Plane cooperates forms light-adjusting module to combine(30);
Fig. 4 is the application scenarios schematic diagram of photographic device shown in Fig. 1.
Specific embodiment
For those skilled in the art is made to more fully understand technical scheme of the present invention, below in conjunction with the accompanying drawings and specific embodiment party Formula is to electric-controlled light-regulating unit provided by the invention(3)With the photographic device with the electric-controlled light-regulating unit(100)It is retouched in detail It states.In the drawings, for inscape identically or comparably, identical label is marked.It is only the automatically controlled tune of the present invention below Light unit and with the electric-controlled light-regulating unit photographic device preferred forms, the present invention be not limited in following structures and Flow.
Fig. 1 is the photographic device of embodiment of the present invention(100)Structure diagram.As shown in Figure 1, present embodiment is taken the photograph As device(100)Including image acquisition unit(1), image processing unit(2)With electric-controlled light-regulating unit(3).Image acquisition unit (1)It is made of camera lens, photosensitive element etc., for acquiring image, and the image collected is sent to image processing unit(2). Image processing unit(2)To image acquisition unit(1)The image of acquisition is handled, and judges whether picture quality meets the requirements, For example whether image is clear, and the reason of causing picture quality undesirable is judged when picture quality is undesirable, than Such as light is too strong, light is too dark, polarization direction or wavelength of light are improper, then to electric-controlled light-regulating unit(3)Send control Information.Electric-controlled light-regulating unit(3)According to image processing unit(2)The control information of transmission, control enter image acquisition unit(1) Light luminous flux, transmission region and/or polarization direction so that image acquisition unit(1)The image of acquisition meets the requirements.
Electric-controlled light-regulating unit(3)Including light modulation film block(30)And control module(31).Light-adjusting module(30)At least by two Light modulation film is composed, control module(31)With light-adjusting module(30)Connection, and control module(31)It can control and be applied to The position of voltage swing and each light modulation film of translation on each light modulation film, so as to be applied on each light modulation film by adjusting Voltage and translate the position of each light modulation film to adjust light-adjusting module(30)Luminous flux, transmission region and/or polarization direction. When its basic principle is is not powered on pressure, light modulation film both sides do not have electric field, and the liquid crystal molecule inside light modulation film is disordered arrangements at this time , light can not pass through or throughput is few, and light modulation film is in opaque state;As voltage increases, electric field strength also increases therewith Greatly, molecules align is in neat trend, and voltage increases to molecule under maximum case and neatly arranged in a direction, and light throughput reaches To maximum, the transparent state of light modulation film can meet control into the light of photosensitive element with reference to the translation of each light modulation film It is required that.In the present embodiment, electric-controlled light-regulating unit(3)Image acquisition unit can be mounted on(1)Camera lens in front of or image obtain Take unit(1)Camera lens and photosensitive element between.
The light-adjusting module of the present invention(30)It is designed based on above-mentioned principle, this is described in detail with reference to Fig. 2 and Fig. 3 Invention light-adjusting module(30)Structure.
Fig. 2 is the light-adjusting module of embodiment of the present invention(30)The first structure diagram.As shown in Fig. 2, in this reality It applies in mode, light-adjusting module(30)By four light modulation films(300、301、302、303)It is laminated, and each light modulation film (300、301、302、303)It is separately provided with sliding rail(310), light modulation film(300、301、302、303)In control module(31) Control under can be along respective sliding rail(310)Translation gliding, so as to fulfill different Heterogeneous Permutations.In the present embodiment, light Line is propagated from left to right, each light modulation film(300)It can be along sliding rail(310)Upper and lower translation.When need adjust light-adjusting module(30)'s During luminous flux, a kind of method is:Control module(31)The voltage for being applied to each light modulation film both sides can be adjusted as needed, such as Application of loads on sealing membrane 1V voltages, second layer light modulation application of loads on sealing membrane 2V voltages, third layer light modulation application of loads on sealing membrane 2.5V electricity are dimmed in first layer Pressure, the 4th layer of light modulation application of loads on sealing membrane 3V voltages, makes light modulation film block by adjusting the luminous flux of every layer of light modulation film(30)Reach institute The luminous flux needed.Another method is:The position of each layer light modulation film is adjusted, for example first layer light modulation film moves in parallel downwards, Second layer light modulation film moves in parallel upwards to be mutually staggered, but be not separated by, and third layer light modulation film and the 4th layer of light modulation film are similar, by Misplace in each layer light modulation film, thus the light of different zones need across the light modulation film number of plies it is different, thus luminous flux is also different, So light-adjusting module can also be realized by the position for adjusting each layer light modulation film(30)The change of luminous flux.
It is understood that after each layer light modulation film dislocation is mobile, each layer light modulation film can load different voltage respectively, Identical voltage can be loaded.In the present embodiment, can also two methods synthesis reached using different luminous fluxes is formed To increasing or decreasing light-adjusting module(30)The purpose of luminous flux.
It will also be appreciated that the set-up mode of sliding rail is not limited to mode shown in Fig. 2, or the side of vertical paper To setting, that is, by setting suitable sliding rail that can make four layers of light modulation membrane change direction, such as light modulation film has been initially just parallel Be positioned over before photosensitive element, can sideling be placed after being adjusted, upward, downward, towards it is left, can towards the right side.
The light-adjusting module of present embodiment can not only adjust luminous flux, but also can adjust transmission region.Specifically, Light modulation film in the present embodiment(300、301、302、303)Respectively added with different coatings, so that light modulation film(300、301、 302、303)With filtering characteristic, such as light modulation film(300)Yellow light can be passed through, light modulation film(301)Blue light can be passed through, Light modulation film(302)Feux rouges can be passed through, light modulation film(303)Purple light can be passed through, when needing to select wave band, such as When needing to pass through feux rouges, the light modulation film by feux rouges can be made(302)Motionless, other light modulation films move upward or downward It is dynamic, it reserves enough spaces and only feux rouges is passed through, so as to fulfill the selection of transmission region.
It is understood that the selection of light modulation film transmission region is not limited to above-mentioned several, but can select as needed Suitable wave band, and the quantity of light modulation film is also not limited to 4, but other appropriate number of light modulations can be selected as needed Film, such as 2,3,5.
Further, the light-adjusting module of present embodiment can also light regulating polarization direction, by present embodiment Light-adjusting module(30)The light of specific direction can be made to pass through or filter out.For example, it is applied to each layer light modulation film by adjusting(300、 301、302、303)On voltage, may be such that light modulation film interior molecules be arranged as perpendicular to light modulation film surface direction, this In the case of, light modulation film plays the role of polarizer, at this time perpendicular to the light throughput of light modulation film maximum, deviates light modulation film Vertical Square To angle more it is big then by light it is fewer, it is achieved thereby that the polarization of light.
It is understood that in order to adjust polarization direction, control module(31)Light-adjusting module can be controlled(30)Rotation is led to Cross control light-adjusting module(30)Certain angle is rotated to change polarization direction, and then reaches and eliminates image spot and other effects.
Fig. 3 is second of structure diagram of the light-adjusting module of embodiment of the present invention.As shown in figure 3, in this embodiment party Formula, light-adjusting module(30)By light modulation film(400)With(401)It forms, light modulation film(400)With(401)In " fence " shape, and mutually Matching, i.e. light modulation film(400)" fence " interstitial site and light modulation film(401)" fence " position correspond to, the two plugs together rear group Into light modulation film module(30).In the present embodiment, light modulation film(400)With(401)Both sides apply voltage respectively, direction of an electric field with Light direction of illumination is identical, is the direction of vertical paper, by adjusting light modulation film(400)With(401)Voltage it is each to adjust The luminous flux of a light modulation film increases or decreases light-adjusting module to reach(30)The purpose of luminous flux.Work as light modulation film(400)With (401)Can make light completely by when, light-adjusting module(30)Luminous flux it is maximum, work as light modulation film(400)With(401)Cannot When passing through light, light-adjusting module(30)Luminous flux it is minimum, by adjusting light modulation film respectively(400)With(401)Luminous flux It can light-adjusting module(30)Luminous flux.
In the present embodiment, light modulation film block(30)It can also realize the selection of transmission region.It specifically, can be in light modulation film (400)With(401)It is upper to add different coatings respectively, so that light modulation film(400)With(401)With filtering characteristic, for example dim Film(400)Yellow light can be passed through, light modulation film(401)Blue light can be passed through, when only need yellow light by when, then adjust light modulation Film(400)Voltage, increase light modulation film(400)Luminous flux, while adjust light modulation film(401)Voltage, make light modulation film(401) It closes, light can not pass through, so just so that only yellow light passes through light-adjusting module(30), realize the selection of transmission region.
It is identical with aforementioned embodiments, the light modulation film module in present embodiment(30)Also it can realize the polarization of light, have Body, by adjusting the voltage being applied on each layer light modulation film, it may be such that light modulation film interior molecules are arranged as perpendicular to light modulation film Polarization is played in the direction on surface, in this case, light modulation film, maximum perpendicular to the light throughput of light modulation film at this time, Deviate light modulation film vertical direction angle more it is big then by light it is fewer, it is achieved thereby that the polarization of light.
It is understood that in order to adjust polarization direction, control module(31)Light-adjusting module can be controlled(30)Rotation is led to Cross control light-adjusting module(30)Certain angle is rotated to change polarization direction, and then reaches and eliminates image spot and other effects.
It is understood that the shapes and sizes of light modulation film 400 and 401 are not limited to shown in Fig. 3, but can be as needed It, can be by connecing as long as the shape of each light modulation film is mutually matched using various size and shapes and combination The modes such as conjunction form light modulation film block.In addition, the quantity of light modulation film is also not limited to 2, but can set as the case may be It is calculated as other suitable quantity, such as 3,4 etc..
Photographic device proposed by the present invention(100)A kind of application scenarios are road monitoring, are come by taking road monitoring as an example below Illustrate photographic device of the present invention(100)The course of work.
Fig. 4 is the application schematic diagram of photographic device shown in Fig. 1.As shown in figure 4, photographic device(100)It is installed on road Monitoring point, for monitoring vehicle(200)Driving condition.
For example, photographic device(100)Image acquisition unit(1)It captures to a pair and hangs with the vehicle image of yellow car plate, Send the image captured to image processing unit(2), image processing unit(2)Judged using relevant image processing algorithm Whether the yellow car plate captured has generates the situation of image fault because illumination is too weak.When light can not secretly extract very much During characters on license plate, image processing unit(2)A light, which can be sent, secretly needs very much the signal for increasing luminous flux to give electric-controlled light-regulating list Member(3), electric-controlled light-regulating unit(3)Control module(31)According to figure processing unit(2)The control signal of transmission controls light modulation film Block(30)Increase luminous flux, specifically can adjust the position grouping of light modulation film by increasing the voltage being applied on each light modulation film Mode is realized.
For another example, according to the difference of day and night light intensity, photographic device(100)When day and night is shot The demand to light is waited also to differ.By taking day and night type monitor camera device as an example, need to filter out when shooting daytime infrared Wave band, therefore be then applied to the voltage of each light modulation film both sides during shooting on daytime by adjusting or adjust the phase of each light modulation film Mutual position achievees the purpose that filter out infrared light.When shooting at night, since ambient is dark, need light as much as possible into Enter photographic device, therefore the voltage of each light modulation film both sides can be also applied to by adjusting or adjusts the mutual of each light modulation film Position, direction are achieved the goal.
For another example, photographic device(100)Image acquisition unit(1)It captures to a pair and hangs with the vehicle figure of yellow car plate Picture, due to the difference of weather and ambient irradiating angle, the car plate captured may generate the excessively bright hot spot in part or Person is extracted less than the character on car plate and because blue etc. on elimination image is thought in influences in blue sky since car plate is reflective.Cause This image processing unit(2)Image acquisition unit is judged according to related algorithm(1)Whether the image of candid photograph has some areas can not Extraction characters on license plate and the phenomenon that color, exist, if there is the presence of this phenomenon, send the signal of an adjustment polarization direction to Electric-controlled light-regulating unit(3), the control module of electric-controlled light-regulating unit 3(31)Light modulation film block is controlled according to the adjustment signal received (30)Polarization direction is adjusted, specifically light modulation film can be made to realize as previously described by increasing the voltage being applied on each light modulation film Polarization, and realize the adjustment of polarization direction by adjusting the position of light modulation film.For example, photographic device 100 is mounted on one three On the highway in track, lane number is from left to right A, B, C, photographic device(100)Positioned above the B of track, if it to capture Vehicle on the B of track, at noon when due to light it is strong, then car plate is likely to occur reflective, and can not clearly be captured Car plate, at this time can be by light-adjusting module(30)10 degree or 20 degree are rotated to the left or to the right to reduce the reflective of positive B tracks, from And capture car plate convenient for clear.Certainly, rotation angle can be determined according to specific algorithm or experience, it is not limited to 10 degree or 20 Degree.
Principle that embodiment of above is intended to be merely illustrative of the present and the illustrative embodiments used, however this hair It is bright to be not limited thereto.For those skilled in the art, in the feelings for not departing from spirit and substance of the present invention Under condition, various changes and modifications can be made therein.These variations and modifications are also considered as the guard interval of the present invention.

Claims (9)

1. a kind of electric-controlled light-regulating unit (3) for photographic device, which is characterized in that including:
Light-adjusting module (30), including at least two light modulation films;
Control module (31), connect respectively with each light modulation film, to adjust the voltage and tune that are applied on each light modulation film respectively The position of light modulation film is saved, so as to adjust the luminous flux of light-adjusting module (30), transmission region and/or polarization direction.
2. electric-controlled light-regulating unit (3) as described in claim 1, which is characterized in that each light modulation film is added with filtering coating, with The light of specific band is allowed to pass through.
3. electric-controlled light-regulating unit (3) as claimed in claim 1 or 2, which is characterized in that the first combination of light-adjusting module (30) Mode (32) at least arranged by two light modulation films with overlapped way, each light modulation film rectangular shaped and has individual sliding rail (310), light modulation film can control the respective sliding rail of lower edge (310) to translate in control module (31).
4. electric-controlled light-regulating unit (3) as claimed in claim 1 or 2, which is characterized in that second of combination of light-adjusting module (30) Mode (33) is at least made of two light modulation films, and multiple light modulation films are in same plane mutual cooperation and form light modulation to combine Module (30).
5. a kind of photographic device (100), which is characterized in that including:
Image acquisition unit (1), for acquiring image;
Image processing unit (2) handles the image of image acquisition unit (1) acquisition, judges to enter image acquisition unit (1) whether light is suitable;
Electric-controlled light-regulating unit (3) enters the light of image acquisition unit (1) according to the control of the judging result of image processing unit (2) Luminous flux, wave band and/or the polarization direction of line,
Electric-controlled light-regulating unit (3) includes:
Light-adjusting module (30), including at least two light modulation films;
Control module (31), connect respectively with each light modulation film, to adjust the voltage and tune that are applied on each light modulation film respectively The position of light modulation film is saved, so as to adjust the luminous flux of light-adjusting module (30), transmission region and/or polarization direction.
6. photographic device (100) as claimed in claim 5, which is characterized in that each light modulation film is added with filtering coating, to permit Perhaps the light of specific band passes through.
7. such as photographic device described in claim 5 or 6 (100), which is characterized in that the first combination side of light-adjusting module (30) Formula (32) at least arranged by two light modulation films with overlapped way, each light modulation film rectangular shaped and has individual sliding rail (310), Light modulation film can control the respective sliding rail of lower edge (310) to translate in control module (31).
8. such as photographic device described in claim 5 or 6 (100), which is characterized in that second of combination side of light-adjusting module (30) Formula (33) is at least made of two light modulation films, and multiple light modulation films are in same plane mutual cooperation and form light modulation mould to combine Block (30).
9. photographic device (100) as claimed in claim 5, which is characterized in that electric-controlled light-regulating unit (3) is mounted on image acquisition Between the front of the camera lens of unit (1) or the camera lens and photosensitive element of image acquisition unit (1).
CN201410117260.7A 2014-03-26 2014-03-26 For the electric-controlled light-regulating unit and photographic device of photographic device Active CN104950476B (en)

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