CN100592187C - Camera shutter device and digital camera using the same - Google Patents
Camera shutter device and digital camera using the same Download PDFInfo
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- CN100592187C CN100592187C CN200610157383A CN200610157383A CN100592187C CN 100592187 C CN100592187 C CN 100592187C CN 200610157383 A CN200610157383 A CN 200610157383A CN 200610157383 A CN200610157383 A CN 200610157383A CN 100592187 C CN100592187 C CN 100592187C
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- conducting polymer
- shutter device
- polymer film
- polymer films
- camera
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Abstract
The invention relates to a camera shutter device and digital camera. The camera shutter device comprises an annular fixing frame and a plurality of conductive polymer membranes with electrostrictive effect in the annular fixing frame, each conductive polymer membrane is provided with a first surface fixedly connected with the annular fixing frame and a freely flexible second surface opposite to the first surface, through electrically controlling the plurality of conductive polymer membrane, the plurality of conductive polymer membranes have distortion, thus the camera shutter device can switchbetween two states, namely allowing light to pass through and forbidding light to pass through. The camera shutter device and digital camera have the advantages of simple structure, low cost, no noise and rapid response speed, etc.
Description
Technical field
The present invention relates to a kind of camera shutter device and use the digital camera of this shutter device.
Background technology
The camera shutter device is a kind of device of sense of control optical device (as sensitive film, image sensor etc.) effective exposure time on the camera, and before the shooting, this camera shutter device is closed, and it can prevent the sensor devices exposure in the camera; During shooting, adjust shutter speed, press the shutter button release (button of promptly taking pictures) of camera, in shutter opening and closed moment, allow light by phtographic lens pass shutter and arrive sensor devices, thereby make the sensor devices in the camera obtain correct exposure.
Common camera shutter device all adopts mechanical structure, for example switches shutter or drives shell fragment with relay with step motor collocation mechanical motion mode and switch shutter or switch shutter in mechanical heavy curtain mode.Yet such mechanical shutter needs the Design of Mechanical Structure of complexity, precision, and it costs an arm and a leg, and can send noise because of the mutual friction of each parts in the course of the work, and mechanical its response speed of camera shutter device is slower, influences its image quality.
In view of this, be necessary to provide a kind of simple in structure, cost is low, and noiseless and response speed be camera shutter device and adopt the digital camera of this camera shutter device faster.
Summary of the invention
To a kind of camera shutter device and digital camera be described with embodiment below, it has characteristics such as simple in structure, that cost is low, noiseless, and response speed is very fast.
A kind of camera shutter device, comprise an annular mount, and a plurality of conducting polymer films that are fixedly installed in this annular fixed mount with electrostrictive effect, this each conducting polymer film all has a first surface of fixedlying connected with this annular mount, and the second surface of a retractable relative with first surface, via these a plurality of conducting polymer films are carried out electric control, can make this a plurality of conducting polymer films produce deformation, thus make this camera shutter device allow light by with forbid switching under light is by this two states.
A kind of digital camera, it comprises a camera lens module, one image sensor, an and shutter device, described camera lens module, image sensor and shutter device be centered close to optical axis direction, wherein, this camera shutter device comprises an annular mount, and a plurality of conducting polymer films that are fixedly installed in this annular fixed mount with electrostrictive effect, this each conducting polymer film all has a first surface of fixedlying connected with this annular mount, and the second surface of a retractable relative with this first surface, via these a plurality of conducting polymer films are carried out electric control, can make this a plurality of conducting polymer films produce deformation, thereby make this camera shutter device allow light by with forbid switching under light is by this two states.
With respect to prior art, a plurality of conducting polymer films with electrostrictive effect that the utilization of described camera shutter device is fixed on the fixed mount produce deformation to reach the purpose that control light passes through under electric control, therefore, this camera shutter apparatus structure is comparatively simple, cost is low, does not have noise.And owing to the response frequency of this conducting polymer film to electric control can reach more than the 4000Hz usually, promptly this conducting polymer film can reach below 2.5 milliseconds the response speed of electric control, and therefore, the response speed of this camera shutter device is very fast.
Description of drawings
Fig. 1 is the synoptic diagram that camera shutter device that first embodiment of the invention provides is in energising.
Fig. 2 is the synoptic diagram that camera shutter device shown in Figure 1 is in energising.
Fig. 3 is the synoptic diagram that camera shutter device that second embodiment of the invention provides is in energising.
Fig. 4 is the synoptic diagram that camera shutter device shown in Figure 3 is in energising.
Fig. 5 is the structural representation of the digital camera that provides of third embodiment of the invention.
Embodiment
To be described in further detail the embodiment of the invention below in conjunction with accompanying drawing.
Referring to Fig. 1 and Fig. 2, a kind of camera shutter device 100 that provides for first embodiment of the invention, it comprises an annular mount 110, and a plurality of conducting polymer films with electrostrictive effect 120 that are fixedly installed on this fixed mount 110, this each conducting polymer film 120 all have one with the fixedly connected first surface 121 of this annular mount 110 and one and these first surface 121 relative and second surfaces 122 retractable.This first surface 121 can be fixedlyed connected with this fixed mount 110 via transparent colloid.
In the present embodiment, this annular mount 110 is the toroidal of a hollow, and it can adopt plastics or metal material made, in order to fixing these a plurality of conducting polymer films 120.
These a plurality of conducting polymer films 120 are fixed on the fixed mount 110 of this toroidal, in the present embodiment, these a plurality of conducting polymer films 120 are two half mososeries conducting polymer films that are oppositely arranged, in the fixed mount that is arranged at this conducting metal annulus 110 of its correspondence.The second surface 122 of this each conducting polymer film 120 is the concave surface towards this first surface 121.This each conducting polymer film 120 all has a first (not indicating) and a second portion (not indicating), and this first is connected with the positive pole of a power supply 130 in the control circuit, and this second portion is connected with the negative pole of power supply 130 in the control circuit.Also have an on-off element 140 in this control circuit, whether it is arranged between the second portion of the negative pole of power supply 130 and each conducting polymer film 120, this each conducting polymer film 120 is switched in order to control.Be appreciated that this on-off element 140 also can be arranged between the first of the positive pole of power supply 130 and each conducting polymer film 120.This on-off element 140 is a normally closed switch, and the button release of this on-off element 140 and this camera door opener 100 (figure does not show) is connected and is subjected to the control of this button release.In the present embodiment, the first of this each conducting polymer film 120 is the upper surface of conducting polymer film 120, and second portion is the lower surface of conducting polymer film 120.
This conducting polymer film 120 is by a material with electrostrictive effect, and (Polyvinylidene Fluoride, PVDF) grade is made as Kynoar.This conducting polymer film 120 with electrostrictive effect can produce a deformation when energising, shape then resiles during outage.
Form a stop opening 125 that light is passed through in the middle of these two the half mososeries conducting polymer films 120 that are oppositely arranged.As shown in Figure 2, when 140 closures of the on-off element in the control circuit, this each conducting polymer film 120 all is energized, this each conducting polymer film 120 can produce deformation, and because the first surface 121 of this each conducting polymer film 120 is fixed on this fixed mount 110, therefore, the first surface 121 that is fixed on this fixed mount 110 at this conducting polymer film 120 can't extend accordingly, deformation only is not fixed on second surface on the fixed mount 110 and retractable 122 places at this conducting polymer film 120 and carries out, promptly extend towards the center of circle of fixed mount 110 direction, then the conducting polymer film 120 of this half mososeries becomes the semilune structure.And the conducting polymer film 120 of two half mososeries that are oppositely arranged all becomes the semilune structure under "on" position, and then stop opening 125 disappears, and does not have light this moment by this camera shutter device.As shown in Figure 1, when the on-off element in this control circuit 140 disconnects, this each conducting polymer film 120 all cuts off the power supply, this each conducting polymer film 120 shape that all resiles then, promptly two conducting polymer films that are oppositely arranged 120 all revert to semifocal chord moon shape, therefore, form stop opening 125 in the middle of it once more, allow light to pass through this camera shutter device 100 with the exposure photo-sensitive cell.
Because this camera shutter device 100 utilizes the conducting polymer film 120 that is fixed on two on the fixed mount 110 half mososeries that are oppositely arranged to produce deformation to reach the purpose that control light passes through under electric control, therefore, these camera shutter device 100 structures are comparatively simple, and cost is low, does not have noise.And because the response frequency of 120 pairs of electric control of this conducting polymer film can reach more than the 4000Hz usually, i.e. the response speed of 120 pairs of electric control of this conducting polymer film can reach below 2.5 milliseconds, and therefore, the response speed of this camera shutter device 100 is very fast.
These a plurality of conducting polymer films 120 also can be three or more the conducting polymer films with above-mentioned shape, and it is staggered respectively; And each conducting polymer film 120 all has a first to be connected with the positive pole of power supply 130, and a second portion is connected with the negative pole of power supply 130.
See also Fig. 3 and Fig. 4, be a kind of camera shutter device 200 that second embodiment of the invention provided, shutter device among itself and first embodiment is roughly the same, its difference is, this fixed mount 210 is the square ring texture of a hollow, this fixed mount 210 comprises at least one first electrode 211, at least one second electrode 212, and a plurality of dielectric connecting portion 213 that connects this at least one first electrode 211 and at least one second electrode 212.In the present embodiment, first electrode 211 and second electrode 212 have two respectively, and these two first electrodes 211 and two second electrodes 212 are crisscross arranged respectively.The first of this each conducting polymer film 220 is connected with first electrode 211, and the second portion of this each conducting polymer film 120 is connected with second electrode 212.This first electrode 211 and second electrode 212 are connected with power supply 230 in the control circuit respectively, and promptly this first electrode 211 is electrically connected to the positive pole of this power supply 230, and this second electrode 212 is electrically connected to the negative pole of this power supply 230 by on-off element 240.
These a plurality of conducting polymer films 220 are four conducting polymer films that roughly become rectangular shape, the first surface 211 of this each conducting polymer film 220 is] the shape structure is with corresponding to this square annular mount 210 and be fastened on this square annular mount 210, and the second surface 212 of this each conducting polymer film 220 is the concave surface towards first surface 211.And these four conducting polymer films 220 are staggeredly placed.
As shown in Figure 4, when on-off element 240 closures, these four conducting polymer films 220 produce deformation, thereby cover whole annular mount 210, forbid that light passes through; As shown in Figure 3, when on-off element 240 disconnected, these four conducting polymer films 220 restored to the original state, and allow light to pass through.
See also Fig. 5, a kind of digital camera 300 that provides for third embodiment of the invention.This digital camera 300 comprises 310, one camera lens modules 320 of an image sensor, and aforesaid camera shutter device 100.This shutter device 100 is arranged on image sensor 310 and is provided with camera lens module 320.
Described image sensor 310 can be charge-coupled image sensor or CMOS (Complementary Metal Oxide Semiconductor).Preferably, described image sensor 310 adopts ceramic lead chip carrier packages (Ceramic Lead ed Chip Carrier, CLCC), plastic leaded chip carrier encapsulation (Plastic Leaded Chip Carrier, PLCC) or chip size packages (Chip ScalePackage, CSP).For preventing dust and other impurities pollution image sensor 310, preferably, near camera lens module 320 1 sides a transparent panel 311 is set in described image sensor 310.Described shutter device 100 can be located on the described transparent panel 311, at this moment, the circuit of control circuit in image sensor 310 of shutter device 100 can be integrated on the circuit board (figure does not show).
In the present embodiment, described camera lens module 320 comprises a lens barrel 321 and is placed in two eyeglasses 322 and 323 in the described lens barrel 321.Described eyeglass 322 has optic 3221 and non-optical division 3222, and described optic 3221 refers to that 320 imagings have the contribution part to the camera lens module, and non-optical division 3222 refers to that 320 imagings do not have the contribution part to the camera lens module.To extending to form tube as side, described eyeglass 323 is placed in the described tube by the edge in the non-optical division 3222 of described eyeglass 322.
The camera shutter device 200 that this digital camera 300 also can adopt second embodiment to be provided.
This camera shutter device 100,200 also can be arranged on the camera lens module 320, perhaps is arranged between the eyeglass 322 and 323 of camera lens module 320.
In addition, those skilled in the art also can do other and change in spirit of the present invention, as the material of the shape of suitable change cavity or structure, magnetic fluid and magnetic field generation device choose and be provided with position etc., as long as it does not depart from technique effect of the present invention and all can.The variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.
Claims (10)
1. camera shutter device, comprise an annular mount, and a plurality of conducting polymer films that are fixedly installed in this annular fixed mount with electrostrictive effect, this each conducting polymer film all has a first surface of fixedlying connected with this annular mount, and the second surface of a retractable relative with this first surface, via these a plurality of conducting polymer films are carried out electric control, can make this a plurality of conducting polymer films produce deformation, thus make this camera shutter device allow light by with forbid switching under light is by this two states.
2. camera shutter device as claimed in claim 1, it is characterized in that, the second surface of this each conducting polymer film is the concave surface towards this first surface, and form a stop opening in the middle of these a plurality of conducting polymer films, when these a plurality of conducting polymer films are switched on, these a plurality of conducting polymer film generation deformation cover the zone in the whole annular mount, and this stop opening disappears and forbids that light passes through; When these a plurality of guiding polymeric membranes cut off the power supply, these a plurality of conducting polymer films restored to the original state, and formed stop opening again in the middle of these a plurality of conducting polymer films, allowed light to pass through.
3. camera shutter device as claimed in claim 2 is characterized in that, this annular mount is an annular, and this each conducting polymer film is the semifocal chord moon shape corresponding to the annular fixed mount.
4. camera shutter device as claimed in claim 2, it is characterized in that, this annular mount is square ring texture, and the first surface of this each conducting polymer film is] the shape structure is with corresponding to this square annular mount, and this first surface is fixed on this square annular mount.
5. as any described camera shutter device in the claim to 4, it is characterized in that, this each conducting polymer film all has a first and a second portion, and this first is connected with the positive pole of a power supply, and this second portion is connected with the negative pole of this power supply.
6. camera shutter device as claimed in claim 5 is characterized in that, the upper surface of this each conducting polymer film is connected with the positive pole of this power supply, and the lower surface of this each conducting polymer film is connected with the negative pole of this power supply.
7. camera shutter device as claimed in claim 5, it is characterized in that, this annular mount has at least one first electrode that is connected with positive source, second electrode that at least one is connected with power cathode, and the insulation connecting portion that connects this first electrode and second electrode, the first of this each conducting polymer film is connected with first electrode, and its second portion is connected with second electrode.
8. camera shutter device as claimed in claim 1 is characterized in that, these a plurality of conducting polymer films are made by polyvinylidene fluoride material.
9. digital camera, it comprises a camera lens module, one image sensor, an and shutter device, described camera lens module, image sensor and shutter device be centered close to optical axis direction, it is characterized in that, this camera shutter device comprises an annular mount, and a plurality of conducting polymer films that are fixedly installed in this annular fixed mount with electrostrictive effect, this each conducting polymer film all has a first surface of fixedlying connected with this annular mount, and the second surface of a retractable relative with first surface, via these a plurality of conducting polymer films are carried out electric control, can make this a plurality of conducting polymer films produce deformation, thereby make this camera shutter device allow light by with forbid switching under light is by this two states.
10. digital camera as claimed in claim 9, it is characterized in that, the second surface of this this each conducting polymer film is the concave surface towards this first surface, and form a stop opening in the middle of these a plurality of conducting polymer films, when these a plurality of conducting polymer films are switched on, these a plurality of conducting polymer film generation deformation cover the zone in the whole fixed mount, and this stop opening disappears and forbids that light passes through; When these a plurality of guiding polymeric membranes cut off the power supply, these a plurality of conducting polymer films restored to the original state, and formed stop opening again in the middle of these a plurality of conducting polymer films, allowed light to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610157383A CN100592187C (en) | 2006-12-08 | 2006-12-08 | Camera shutter device and digital camera using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610157383A CN100592187C (en) | 2006-12-08 | 2006-12-08 | Camera shutter device and digital camera using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101196672A CN101196672A (en) | 2008-06-11 |
| CN100592187C true CN100592187C (en) | 2010-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610157383A Expired - Fee Related CN100592187C (en) | 2006-12-08 | 2006-12-08 | Camera shutter device and digital camera using the same |
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| Country | Link |
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| CN (1) | CN100592187C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964864B (en) * | 2009-07-21 | 2013-04-10 | 鸿富锦精密工业（深圳）有限公司 | Camera module |
| CN102023457B (en) * | 2009-09-09 | 2013-11-06 | 鸿富锦精密工业（深圳）有限公司 | Aperture device and image acquisition module with same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4375915A (en) * | 1980-02-04 | 1983-03-08 | Canon Kabushiki Kaisha | Shutter time control camera |
| US5005034A (en) * | 1989-04-14 | 1991-04-02 | Achiever Industries, Ltd. | Camera mechanism |
| CN2256545Y (en) * | 1995-09-28 | 1997-06-18 | 武汉照相机快门厂 | Electronic steel sheet shutter |
| CN1154491A (en) * | 1995-10-24 | 1997-07-16 | 宝源基业有限公司 | Camera shutter and automatic focusing device |
| US6351580B1 (en) * | 2000-03-27 | 2002-02-26 | Jds Uniphase Corporation | Microelectromechanical devices having brake assemblies therein to control movement of optical shutters and other movable elements |
| CN1357787A (en) * | 2000-12-06 | 2002-07-10 | 佳能株式会社 | Image sesning device and method with electronic and mechanical shutter function |
| CN1620114A (en) * | 2003-11-20 | 2005-05-25 | 佳能株式会社 | Image input apparatus and its control method |
-
2006
- 2006-12-08 CN CN200610157383A patent/CN100592187C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4375915A (en) * | 1980-02-04 | 1983-03-08 | Canon Kabushiki Kaisha | Shutter time control camera |
| US5005034A (en) * | 1989-04-14 | 1991-04-02 | Achiever Industries, Ltd. | Camera mechanism |
| CN2256545Y (en) * | 1995-09-28 | 1997-06-18 | 武汉照相机快门厂 | Electronic steel sheet shutter |
| CN1154491A (en) * | 1995-10-24 | 1997-07-16 | 宝源基业有限公司 | Camera shutter and automatic focusing device |
| US6351580B1 (en) * | 2000-03-27 | 2002-02-26 | Jds Uniphase Corporation | Microelectromechanical devices having brake assemblies therein to control movement of optical shutters and other movable elements |
| CN1357787A (en) * | 2000-12-06 | 2002-07-10 | 佳能株式会社 | Image sesning device and method with electronic and mechanical shutter function |
| CN1620114A (en) * | 2003-11-20 | 2005-05-25 | 佳能株式会社 | Image input apparatus and its control method |
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| Publication number | Publication date |
|---|---|
| CN101196672A (en) | 2008-06-11 |
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