CN104950476A - Electric control dimming unit for photographic device and photographic device - Google Patents
Electric control dimming unit for photographic device and photographic device Download PDFInfo
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- CN104950476A CN104950476A CN201410117260.7A CN201410117260A CN104950476A CN 104950476 A CN104950476 A CN 104950476A CN 201410117260 A CN201410117260 A CN 201410117260A CN 104950476 A CN104950476 A CN 104950476A
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- adjusting module
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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
- G02F1/0102—Constructional details, not otherwise provided for in this subclass
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
-
- 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
- G02F1/0121—Operation of devices; Circuit arrangements, not otherwise provided for in this subclass
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Stroboscope Apparatuses (AREA)
- Blocking Light For Cameras (AREA)
- Studio Devices (AREA)
Abstract
The invention provides an electric control dimming unit for a photographic device and the photographic device. The photographic device (100) comprises an image obtaining unit (1), an image processing unit (2) and an electric control dimming unit (3). The electric control dimming unit (3) comprises a dimming module (30) composed of dimming films and a control module (31). The control module (31) is connected with the image processing unit (2) and the diming module (30) in a bidirectional mode. The image obtaining unit (1) is connected with the image processing unit (2) in a one-way mode. The control module (31) changes the luminous flux, the optical transparency range and the polarization direction of the dimming module (30) by adjusting the voltage of all diming films, conducting translation on the diming films and/or changing the directions of the dimming module. The photographic device (100) can obtain images of high quality, solves the problems that the luminous flux, the optical transparency range and the polarization direction are changed only through a mechanical device, can achieve multi-function stacking and miniaturization design and meets the requirement of video monitoring.
Description
Technical field
The invention belongs to intelligent monitoring technology field, relate to a kind of electric-controlled light-regulating unit and there is the camera head of this electric-controlled light-regulating unit.
Background technology
Video camera for monitoring field is mostly installed on outdoor, due to diversity and the polytrope of outdoor occasion environment, in order to obtain good quality monitoring, need often to adjust luminous flux, select transmission region and adjustment polarization direction, and these all need to be completed by special physical construction usually.Such as, generally use aperture and shutter to regulate luminous flux at present, but some occasion cannot use electronic aperture, can only be used alone shutter control, therefore cannot meet the demand of round-the-clock outdoor monitoring.Meanwhile, because CCD size is large in high definition camera, available high definition electronic aperture camera lens is fewer, and cost is also higher, constrains the lifting of camera performance and popularizes.In addition, select transmission region and adjustment polarization direction, also need to use independent optical filter and polarized lenses, consuming time and replacing bothers, and cannot meet the demand that intelligent transportation field is monitored in real time.
Summary of the invention
The present invention proposes a kind of electric-controlled light-regulating unit for camera head and camera head, by the luminous flux of this electric-controlled light-regulating unit (3) adjustable camera head (100), transmission region and polarization direction, solve the switching problem that all must be realized by mechanical hook-up of current aperture, optical filter, polaroid, and can accomplish that several functions superposes, Miniaturization Design, meets the demand that intelligent transportation and safety-security area are monitored in real time.
The electric-controlled light-regulating unit (3) for camera head that the present invention proposes, comprising: light-adjusting module (30), it comprises at least two light modulation films; Control module (31), connects respectively at each light modulation film, to regulate the voltage be applied on each light modulation film respectively, thus the luminous flux of adjustment light-adjusting module (30), transmission region and/or polarization direction.
Each light modulation film is added with filtering coating, passes through to allow the light of specific band.By the selection making different light modulation film printing opacities can realize transmission region.
The first array mode (32) of light-adjusting module of the present invention (30) is at least arranged with overlapped way by two light modulation films, each light modulation film rectangular shaped and be provided with independent slide rail (310), light modulation film can along respective slide rail (310) translation under control module (31) controls.
The second array mode (33) of light-adjusting module of the present invention (30) is at least made up of two light modulation films, and multiple light modulation film is in same plane cooperatively interacts to combine composition light-adjusting module (30).
The principle of work of the electric-controlled light-regulating unit (3) that the present invention proposes is as follows:
Control module (31) is by regulating the voltage be applied on light modulation film, regulate the electric field intensity being carried in light modulation film both sides, control the molecules align mode of light modulation film inside, and then regulate luminous flux and/or the polarization direction of each light modulation film, meanwhile, it is mobile along respective slide rail (310) that control module (31) also can control each light modulation film, and two kinds of modes combine, and reaches and regulate the luminous flux of light-adjusting module (30) and/or the object of polarization direction;
The light modulation film that this patent relates to all is added with filtering coating, there is the effect selecting transmission region, when light-adjusting module (30) needs the light of special wave band time, control module (31) controls light-adjusting module (30) by unwanted light modulation film translation to both sides, and only retaining can through the light modulation film of required light wave band to reach the object selecting transmission region.
The light-adjusting module (30) that the present invention adopts multiple light modulation film to be combined to form can make the luminous flux of light-adjusting module (30), transmission region and/or polarization direction range of adjustment more accurately careful, be convenient to adapt to various complex environment and light modulation demand.
The present invention proposes a kind of camera head (100), comprising: image acquisition unit (1), for gathering image; Graphics processing unit (2), processes the image that image acquisition unit (1) gathers, and judges that whether the light entering image acquisition unit (1) is suitable; Electric-controlled light-regulating unit (3), controls to enter the luminous flux of the light of image acquisition unit (1), transmission region and/or polarization direction according to the judged result of graphics processing unit (2).Wherein electric-controlled light-regulating unit adopts above-mentioned electric-controlled light-regulating unit (3) provided by the invention.
Camera head provided by the invention (100) is owing to being provided with above-mentioned electric-controlled light-regulating unit, thus the luminous flux of the light entering camera head, transmission region and/or polarization direction can be regulated as required, thus be convenient to camera head and obtain high-quality satisfactory image, meet the demand that intelligent transportation and safety-security area are monitored in real time.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the camera head (100) of embodiment of the present invention, comprising: image acquisition unit (1), graphics processing unit (2) and electric-controlled light-regulating unit (3), and electric-controlled light-regulating unit is made up of light-adjusting module (30) and control module (31);
Fig. 2 is the first structural representation of the light-adjusting module (30) of embodiment of the present invention, is made up of multilayer light modulation film and slide rail (310);
Fig. 3 is the second structural representation of the light-adjusting module of embodiment of the present invention, is in same plane cooperatively interacts to combine and form light-adjusting module (30) by multiple light modulation film;
Fig. 4 is the application scenarios schematic diagram of camera head shown in Fig. 1.
Embodiment
For making those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, electric-controlled light-regulating unit (3) provided by the invention and the camera head (100) with this electric-controlled light-regulating unit are described in detail.In the drawings, for identical or suitable inscape, mark identical label.Below be only electric-controlled light-regulating unit of the present invention and have the preferred forms of camera head of this electric-controlled light-regulating unit, the present invention is not limited in following structure and flow process.
Fig. 1 is the structured flowchart of the camera head (100) of embodiment of the present invention.As shown in Figure 1, the camera head (100) of present embodiment comprises image acquisition unit (1), graphics processing unit (2) and electric-controlled light-regulating unit (3).Image acquisition unit (1) is made up of camera lens, photo-sensitive cell etc., for gathering image, and the image collected is sent to graphics processing unit (2).Graphics processing unit (2) processes the image that image acquisition unit (1) gathers, judge whether picture quality meets the requirements, such as whether image is clear, and judge when picture quality is undesirable to cause the undesirable reason of picture quality, such as light is too strong, light is too dark, polarization direction or wavelength of light improper etc., then send control information to electric-controlled light-regulating unit (3).The control information that electric-controlled light-regulating unit (3) sends according to graphics processing unit (2), controls to enter the luminous flux of the light of image acquisition unit (1), transmission region and/or polarization direction, meets the requirements with the image making image acquisition unit (1) gather.
Electric-controlled light-regulating unit (3) comprises light modulation film block (30) and control module (31).Light-adjusting module (30) is at least combined by two light modulation films, control module (31) is connected with light-adjusting module (30), and control module (31) can control to be applied to the position of voltage swing on each light modulation film and each light modulation film of translation, thus by regulating the position of voltage and each light modulation film of translation be applied on each light modulation film to regulate the luminous flux of light-adjusting module (30), transmission region and/or polarization direction.When its ultimate principle is non-making alive, light modulation film both sides do not have electric field, and now the liquid crystal molecule of light modulation film inside is disordered arrangements, and light cannot pass through, or throughput is few, and light modulation film is opaque state; Along with voltage increases, electric field intensity also increases thereupon, molecules align is neat trend, under voltage increases to maximum case, molecule is neatly in a direction arrangement, light throughput reaches maximum, the transparent state of light modulation film, the translation in conjunction with each light modulation film just can meet the requirement controlling to enter the light of photo-sensitive cell.In the present embodiment, electric-controlled light-regulating unit (3) can be arranged on the camera lens front of image acquisition unit (1) or between the camera lens of image acquisition unit (1) and photo-sensitive cell.
Light-adjusting module of the present invention (30) forms based on above-mentioned principle design, describes the structure of light-adjusting module of the present invention (30) below in conjunction with Fig. 2 and Fig. 3 in detail.
Fig. 2 is the first structural representation of the light-adjusting module (30) of embodiment of the present invention.As shown in Figure 2, in the present embodiment, light-adjusting module (30) is laminated by four light modulation films (300,301,302,303), and each light modulation film (300,301,302,303) is provided with all separately slide rail (310), light modulation film (300,301,302,303) along respective slide rail (310) translation gliding, thus can realize different Heterogeneous Permutations under the control of control module (31).In the present embodiment, light is propagated from left to right, and each light modulation film (300) can along slide rail (310) upper and lower translation.When needing the luminous flux regulating light-adjusting module (30), one method is: control module (31) can regulate the voltage being applied to each light modulation film both sides as required, such as at ground floor light modulation application of loads on sealing membrane 1V voltage, second layer light modulation application of loads on sealing membrane 2V voltage, third layer light modulation application of loads on sealing membrane 2.5V voltage, 4th layer of light modulation application of loads on sealing membrane 3V voltage, makes light modulation film block (30) reach required luminous flux by regulating the luminous flux of every layer of light modulation film.Another kind method is: the position regulating each layer light modulation film, such as ground floor light modulation film moves in parallel downwards, second layer light modulation film upwards moves in parallel and mutually staggers, but not separately, third layer light modulation film and the 4th layer of light modulation film similar, due to the dislocation of each layer light modulation film, thus the light of zones of different need through the light modulation film number of plies different, thus luminous flux is also different, so the change by regulating the position of each layer light modulation film also can realize light-adjusting module (30) luminous flux.
Be understandable that, after each layer light modulation film dislocation is mobile, each layer light modulation film can load different voltage respectively, also can load identical voltage.In the present embodiment, the object forming different luminous fluxes and reach increase or reduce light-adjusting module (30) luminous flux can also comprehensively be used in two ways.
It will also be appreciated that, the set-up mode of slide rail is not limited to mode shown in Fig. 2, also can be the direction setting of vertical paper, namely, four layers of light modulation film can be made to change direction by arranging suitable slide rail, such as light modulation film has just started to be placed in parallel in before photo-sensitive cell, can place sideling after adjusting, upward, down, towards left, can towards the right side.
The light-adjusting module of present embodiment not only can regulate luminous flux, but also can regulate transmission region.Particularly, light modulation film (300 in the present embodiment, 301, 302, 303) different coatings is added with respectively, to make light modulation film (300, 301, 302, 303) there is filtering characteristic, such as light modulation film (300) can make gold-tinted pass through, light modulation film (301) can make blue light pass through, light modulation film (302) can make ruddiness pass through, light modulation film (303) can make purple light pass through, when wave band selected by needs time, such as when needs are by ruddiness time, can make by the light modulation film (302) of ruddiness motionless, other light modulation film moves up or down, reserve enough spaces make to only have ruddiness by, thus realize the selection of transmission region.
Be understandable that, the selection of light modulation film transmission region is not limited to above-mentioned several, but can select suitable wave band as required, and the quantity of light modulation film is also not limited to 4, but the light modulation film of other suitable quantities can be selected as required, such as 2,3,5.
Further, the light-adjusting module of present embodiment also can the polarization direction of light regulating, the light-adjusting module (30) by present embodiment can make the light of specific direction by or filtering.Such as, by regulating the voltage be applied on each layer light modulation film (300,301,302,303), light modulation film interior molecules can be made to be arranged as direction perpendicular to light modulation film surface, in this case, light modulation film plays polaroid effect, light throughput now perpendicular to light modulation film is maximum, and the angle departing from light modulation film vertical direction is larger, and the light passed through is fewer, thus achieves polarisation of light.
Be understandable that, in order to regulate polarization direction, control module (31) can control light-adjusting module (30) and rotate, and rotates certain angle and changes polarization direction, and then reach the effects such as removal of images hot spot by control light-adjusting module (30).
Fig. 3 is the second structural representation of the light-adjusting module of embodiment of the present invention.As shown in Figure 3, in present embodiment, light-adjusting module (30) is made up of light modulation film (400) and (401), light modulation film (400) and (401) are in " fence " shape, and mutually mate, namely " fence " interstitial site of light modulation film (400) and " fence " position of light modulation film (401) corresponding, the two plugs together rear composition light modulation film module (30).In the present embodiment, light modulation film (400) and (401) both sides apply voltage respectively, direction of an electric field is identical with light direction of illumination, be the direction of vertical paper, by the luminous flux regulating the voltage of light modulation film (400) and (401) to regulate each light modulation film, reach the object increasing or reduce light-adjusting module (30) luminous flux.When light modulation film (400) and (401) all can make light pass through completely, the luminous flux of light-adjusting module (30) is maximum, when light modulation film (400) and (401) all can not make light pass through, the luminous flux of light-adjusting module (30) is minimum, by regulating luminous flux just adjustable light module (30) luminous flux of light modulation film (400) and (401) respectively.
In the present embodiment, light modulation film block (30) also can realize the selection of transmission region.Particularly, different coatings can be added respectively on light modulation film (400) and (401), to make light modulation film (400) and (401), there is filtering characteristic, such as light modulation film (400) can make gold-tinted pass through, light modulation film (401) can make blue light pass through, when only needing gold-tinted to pass through, then regulate the voltage of light modulation film (400), increase the luminous flux of light modulation film (400), regulate the voltage of light modulation film (401) simultaneously, light modulation film (401) is closed, light cannot pass through, so just, make to only have gold-tinted by light-adjusting module (30), achieve the selection of transmission region.
Identical with aforementioned embodiments, light modulation film module (30) in present embodiment also can realize the polarization of light, particularly, by regulating the voltage that is applied on each layer light modulation film, light modulation film interior molecules can be made to be arranged as direction perpendicular to light modulation film surface, in this case, light modulation film plays polarization, light throughput now perpendicular to light modulation film is maximum, and the angle departing from light modulation film vertical direction is larger, and the light passed through is fewer, thus achieves polarisation of light.
Be understandable that, in order to regulate polarization direction, control module (31) can control light-adjusting module (30) and rotate, and rotates certain angle and changes polarization direction, and then reach the effects such as removal of images hot spot by control light-adjusting module (30).
Be understandable that, shape and the size of light modulation film 400 and 401 are not limited to shown in Fig. 3, but can adopt various size and shape as required, and array mode, as long as the shape of each light modulation film is mated mutually, light modulation film block can be formed by modes such as joints.In addition, the quantity of light modulation film is also not limited to 2, but can be designed to other suitable quantity as the case may be, such as 3,4 etc.
Camera head (100) a kind of application scenarios that the present invention proposes is road monitoring, and the course of work of camera head of the present invention (100) is described for road monitoring below.
Fig. 4 is the application schematic diagram of camera head shown in Fig. 1.As shown in Figure 4, camera head (100) is installed on the control point of road, for the travel conditions of monitoring vehicle (200).
Such as, the image acquisition unit (1) of camera head (100) captures the vehicle image hanging with yellow car plate to a pair, send the image captured to graphics processing unit (2), the image processing algorithm that graphics processing unit (2) utilization is relevant judges whether the yellow car plate captured has the situation producing image fault because illumination is too weak to occur.When light too secretly cannot extract characters on license plate, graphics processing unit (2) can send a light too secretly needs the signal increasing luminous flux to electric-controlled light-regulating unit (3), the control signal that the control module (31) of electric-controlled light-regulating unit (3) sends according to figure processing unit (2), control light modulation film block (30) and increase luminous flux, specifically by increasing the voltage be applied on each light modulation film, the position grouping mode of light modulation film is regulated to realize.
Again such as, according to the difference of day and night light intensity, not identical to the demand of light time camera head (100) is taken with night by day yet.For day and night type monitor camera device, when daytime takes time, need filtering infrared band, be then applied to the voltage of each light modulation film both sides by adjustment when therefore daytime takes or regulate the mutual alignment of each light modulation film to reach the object of filtering infrared light.When taking night, because extraneous light is dark, needing light as much as possible to enter camera head, being therefore also applied to the voltage of each light modulation film both sides by adjustment or regulating the mutual alignment of each light modulation film, direction to achieve the goal.
For another example, the image acquisition unit (1) of camera head (100) captures the vehicle image hanging with yellow car plate to a pair, due to the difference of weather and extraneous light irradiating angle, the car plate captured may produce the excessively bright hot spot in local, or due to car plate reflective and extract less than the character on car plate and because the blueness etc. on removal of images is thought in the impact in blue sky.Therefore according to related algorithm, graphics processing unit (2) judges that the phenomenon whether image that image acquisition unit (1) is captured has some areas cannot extract characters on license plate and color exists, if there is the existence of this phenomenon, then send the signal of an adjustment polarization direction to electric-controlled light-regulating unit (3), the control module (31) of electric-controlled light-regulating unit 3 controls light modulation film block (30) adjustment polarization direction according to the adjustment signal received, specifically by increasing the voltage be applied on each light modulation film, light modulation film is made to realize polarization as previously mentioned, and the adjustment by regulating the position of light modulation film to realize polarization direction.Such as, camera head 100 is arranged on the highway of a three lanes, lane number is from left to right A, B, C, camera head (100) is located at above the B of track, if will capture the vehicle on the B of track, because light is strong time at noon, then car plate may occur reflective, and car plate cannot be captured clearly, now light-adjusting module (30) can be rotated to the left or to the right 10 degree or 20 degree to reduce the reflective of B track, front, thus be convenient to clear candid photograph car plate.Certainly, the anglec of rotation can be determined according to specific algorithm or experience, is not limited to 10 degree or 20 degree.
The illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, various modification and improvement can be made.These modification and improvement are also considered as guard interval of the present invention.
Claims (10)
1. one kind for the electric-controlled light-regulating unit (3) of camera head, it is characterized in that, comprising:
Light-adjusting module (30), comprises at least two light modulation films;
Control module (31), is connected with each light modulation film respectively, to regulate the voltage be applied on each light modulation film respectively, thus the luminous flux of adjustment light-adjusting module (30), transmission region and/or polarization direction.
2. electric-controlled light-regulating unit (3) as claimed in claim 1, it is characterized in that, each light modulation film is added with filtering coating, passes through to allow the light of specific band.
3. electric-controlled light-regulating unit (3) as claimed in claim 1 or 2, it is characterized in that, the first array mode (32) of light-adjusting module (30) is at least arranged with overlapped way by two light modulation films, each light modulation film rectangular shaped and have independent slide rail (310), light modulation film can along respective slide rail (310) translation under control module (31) controls.
4. electric-controlled light-regulating unit (3) as claimed in claim 1 or 2, it is characterized in that, the second array mode (33) of light-adjusting module (30) is at least made up of two light modulation films, and multiple light modulation film is in same plane cooperatively interacts to combine composition light-adjusting module (30).
5. a camera head (100), is characterized in that, comprising:
Image acquisition unit (1), for gathering image;
Graphics processing unit (2), processes the image that image acquisition unit (1) gathers, and judges that whether the light entering image acquisition unit (1) is suitable;
Electric-controlled light-regulating unit (3), controls to enter the luminous flux of the light of image acquisition unit (1), wave band and/or polarization direction according to the judged result of graphics processing unit (2).
6. camera head (100) as claimed in claim 6, it is characterized in that, electric-controlled light-regulating unit (3) comprising:
Light-adjusting module (30), comprises at least two light modulation films;
Control module (31), is connected with each light modulation film respectively, to regulate the voltage be applied on each light modulation film respectively, thus the luminous flux of adjustment light-adjusting module (30), transmission region and/or polarization direction.
7. camera head (100) as claimed in claim 7, it is characterized in that, each light modulation film is added with filtering coating, passes through to allow the light of specific band.
8. camera head (100) as claimed in claim 7 or 8, it is characterized in that, the first array mode (32) of light-adjusting module (30) is at least arranged with overlapped way by two light modulation films, each light modulation film rectangular shaped and have independent slide rail (310), light modulation film can along respective slide rail (310) translation under control module (31) controls.
9. camera head (100) as claimed in claim 7 or 8, it is characterized in that, the second array mode (33) of light-adjusting module (30) is at least made up of two light modulation films, and multiple light modulation film is in same plane cooperatively interacts to combine composition light-adjusting module (30).
10. camera head (100) as claimed in claim 6, is characterized in that, electric-controlled light-regulating unit (3) is arranged on the front of the camera lens of image acquisition unit (1) or between the camera lens of image acquisition unit (1) and photo-sensitive cell.
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| CN201410117260.7A CN104950476B (en) | 2014-03-26 | 2014-03-26 | For the electric-controlled light-regulating unit and photographic device of photographic device |
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| CN201410117260.7A CN104950476B (en) | 2014-03-26 | 2014-03-26 | For the electric-controlled light-regulating unit and photographic device of photographic device |
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| CN104950476B CN104950476B (en) | 2018-06-15 |
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| CN108131608A (en) * | 2018-01-17 | 2018-06-08 | 福建成达兴智能科技股份有限公司 | A kind of intelligent dimming lamp based on image procossing and light modulation film |
| CN108810391A (en) * | 2018-09-07 | 2018-11-13 | 百度在线网络技术（北京）有限公司 | Photographic device |
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| CN110763213A (en) * | 2019-11-13 | 2020-02-07 | 刘洁 | Movable surgical ward acceptance platform |
| CN110830697A (en) * | 2019-11-27 | 2020-02-21 | Oppo广东移动通信有限公司 | Control method, electronic device, and storage medium |
| CN111965743A (en) * | 2020-08-10 | 2020-11-20 | 黄山中鼎信息技术有限公司 | Adjustable infrared filtering system based on liquid crystal |
| CN114791680A (en) * | 2021-01-26 | 2022-07-26 | 北京京东方传感技术有限公司 | Optical module, light-adjusting filter, camera functional device and working method |
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