CN101266386A - Miniature camera aperture shutter device - Google Patents
Miniature camera aperture shutter device Download PDFInfo
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- CN101266386A CN101266386A CNA2007100380960A CN200710038096A CN101266386A CN 101266386 A CN101266386 A CN 101266386A CN A2007100380960 A CNA2007100380960 A CN A2007100380960A CN 200710038096 A CN200710038096 A CN 200710038096A CN 101266386 A CN101266386 A CN 101266386A
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Abstract
An aperture shutter device of miniature camera includes a lens assembling body combined by more than one lens for obtaining images of the object to be picked-up; an image sensor for converting images getting to electric power signals; and an exterior circuit part of the image sensor. The aperture shutter device is composed of a base which has a plurality of narrow and long holes and has a light transmission hole in the center part; a cover, wherein, the center part is provided with a light transmission hole, and coils for controlling work of aperture and shutter are installed at one side of the cover; a plurality of shutter baffles which execute axial center rotary in the reciprocal crossing direction, to switch on/off the light transmission hole; a chaining part setting up a support bearing at the base, which allows the shutter baffles to execute axial center rotary; and an aperture shutter drive part which installs magnet at one side, uses the electromagnetic force between the coils and the magnet to have a straight reciprocating motion along the narrow and long of the base, taking the center of the chaining section as the reference, so as to drive the chaining section. The present invention can improve image quality of photograph, and have the features of miniaturization and low-consumption.
Description
Technical field
The present invention relates to a kind of aperture shutter device that is installed in the minicam on the portable terminal computer, relate in particular to by mechanical shutter and aperture and regulate the light power, reach the aperture shutter device that improves image quality and miniaturization, low power consumption effect and be applicable to the minicam of portable terminal computer.
Background technology
Recently, along with the development of the communication technology and processing data information technology, the portable terminal machine technology with multiple functions such as information processing, communication and image information input and output makes rapid progress.Personal digital assistant), mobile phone with digital camera and PDA function etc. all is illustration PDA (the personal digital assistant: with digital camera and communication function.Because the progress of digital camera technology and information storage capability, the digital-code camera module (digital camera module) that senior pattern is installed becomes a kind of trend of universalness day by day.Because based on its progress of various technology, on the minicam of installing on the portable terminal computer, when using mega pixel (mega pixel) level imageing sensor (image sensor), optical zoom (optical zoom) and automatic focusing (Auto focus) function, more affix the critical function of mechanical shutter (mechanical shutter) and mechanical type aperture (mechanical iris).
Fig. 1 is the structural drawing of explanation minicam structure.
With reference to Fig. 1, the entirety of lens package body 10 that minicam is made up of above lens, casing 20, imageing sensor 30 and the external circuit plate 40 with external circuit constitute.
The inside of entirety of lens package body 10 comprises more than one lens, is assemblied in the casing 20.Possess imageing sensor 30 and external circuit plate 40 in casing 20 bottoms.The light signal that imageing sensor 30 utilizes by said lens detects electric power signal; It is made of CMOS or ccd image sensor.
But, recently, on the digital-code camera module that assembles on the portable terminal computer, used the imageing sensor of mega pixel level, for obtaining the facilitating functions of HD image and additivity, it has adopted the additional module that assembly, optical zoom (Optical zoom) and automatic focusing (the auto focus control) function of a plurality of lens combination are arranged.
Fig. 2 is the concept map that explanation is applicable to a plurality of optical instruments among Fig. 1.
Fig. 2 is illustrated in a plurality of optical instruments 11,12 is housed between imageing sensor 30 and the entirety of lens package body 10, plays the function of optical zoom and automatic focusing.
The volume of this microminiature digital-code camera module is compared with the size of entire machine and is only occupied quite little space.Camera model fully possesses performances such as Fast starting, low power consumption and big displacement; When using moving parts such as the driver mobile lens group that rotatablely moves such as having stepper motor now, it is many to exist annex quantity, complex structure and the shortcoming that makes the increase of camera volume because of the size of motor greatly.
In this imageing sensor, the working method of charge coupled device ccd (charge-coupled device) is to use staggered scanning (interlaced scan) and lines by line scan (progressive scan) two kinds of scan modes.Above-mentioned interlace mode is to use among the CCD at basic video, at twice scan image; If be divided into twice scanning, after carrying out single pass, till scanning for the second time, light continues to enter and leave, and can make the image effect variation.Therefore, for obtaining high quality graphic, must consider in whole twice sweep phase, to utilize mechanical shutter to cut off light.Different therewith, using at 350,000 Pixel-level digital cameras is the progressive scan mode that is to use all pixels of single pass period of main flow.This mode has the advantage that can not cause error because of the time interval, therefore, can only control with electronic shutter without mechanical scan.
But,,, therefore can expect that the progressive scan mode of better image quality is reused because on the digital camera that has more than 3,000,000 pixels, can obtain more rays from identical CCD size recently.As previously mentioned, because only can't obtain desired image quality, so just firmly grasping the technology that mechanical shutter is adopted in development research at present with the electronic type shutter.
Mechanical shutter is blinked as the people, and in the moment of the picture be taken, unwanted light is blocked in holly strip, has the function that the image quality of making improves a level again.Therefore, taking the strong reflection light time such as the electric light or the sun, preventing to occur on the picture together vertically fuzzy (Smear) phenomenon of lines, thereby obtaining the distinct more photo of image quality by hardware rather than software.
Also have, regulate the amount of light that enters if adopt the mechanical type aperture, utilize mechanical shutter that suitable exposure value is set simultaneously, to help to obtain the photo of image quality distinctness, and the degree of depth that can regulate subject, thereby in the middle of the ultraminiature camera module, obtain the multiple subjective photo that needs of the reflection photographer identical with ordinary camera.
In addition, in the middle of the camera that adopts mechanical type aperture structure, also have and reduce because the function that there are differences the aberration that produces of light that the core of scioptics enters and the light that enters by peripheral part.By regulating aperture, block the light that enters from lens peripheral part, the main light that uses the core of lens can obtain the photo that aberration is few and image quality is distinct on image.Therefore, using the mechanical type aperture to study as requisite accessory in the mega pixel cameras that is intended to improve image quality.
The driver of performances such as the function that be to adapt to mechanical shutter and aperture, mini digital-code camera module need to satisfy that volume is little, toggle speed fast, low power consumption and big displacement.Particularly, need can correspondence image size increase the driver of required displacement.Existing ordinary electronic driver (magnetic actuator) is because use number of fitting parts many, so the restriction of the price of being subjected to and volume is restricted in the increase displacement.Because it utilizes On/Off to drive, so can't reach and existing machinery formula aperture identical functions.
Also have, when the driver that uses stepper motor (stepping motor) etc. to rotatablely move moves moving part, because in power transmission process, used gear, so number of fitting parts is many, complex structure.In addition, it is slow also to deposit reaction velocity, and gear parts has shortcomings such as friction and noise.When mechanical shutter that adopts aforesaid way and aperture driver, because complex structure so be difficult to produce the driver of low price, also is subjected to bulky restriction in miniaturization.
Summary of the invention
The 1st purpose of the present invention provides a kind of aperture shutter device that the minicam of mechanical type aperture and shutter function can be provided on minicam.
The 2nd purpose of the present invention provides a kind of minicam aperture shutter device that mechanical type aperture and shutter function can be applicable on the small-sized camera module.
The 3rd purpose of the present invention is combined machine formula aperture and shutter, makes the lightness of camera module, miniaturization become possibility.
To achieve these goals, the minicam that the external circuit that the aperture shutter device of minicam of the present invention is a kind of entirety of lens package body of being made up of above lens that are used for obtaining the subject volume image, will become the imageing sensor of electric power signal, above-mentioned imageing sensor by the image transformation of said lens is partly formed, its aperture shutter device comprises following ingredient:
Core has the light hole of light-permeable, and the coil of control aperture and shutter work is installed in the lid of a side;
Core has the light hole of light-permeable, and opposite side has the pedestal of a plurality of long and narrow holes;
Carry out a plurality of shutter baffle plates that the axle center rotates the above-mentioned light hole of switch to mutually crisscross;
In said base upper support axle center, make above-mentioned shutter baffle plate carry out the link portions of axle center rotation;
In a side magnet being installed, by the electromagnetic force between above-mentioned coil and the magnet, is benchmark with link center one side partly, does straight reciprocating motion along the long and narrow hole of said base, drives the diaphragm shutter drive division of link part.
Being preferably in above-mentioned light hole is on the position at corresponding center, forms overlapping top and bottom shutter baffle plate, by the operation of above-mentioned link part, from the above-mentioned light hole of both sides while switch.
Above-mentioned link partly preferably includes:
The central shaft that central part links to each other with the central shaft long and narrow hole of aforesaid substrate; Driving shaft on the said aperture shutter drive part is combined in the drive shaft hole of above-mentioned central shaft one side; Two ends are connected to the hinge axis on above-mentioned a plurality of shutter baffle plate.
Preferably include on the said base:
The central shaft long and narrow hole that the opposite side central part links to each other with above-mentioned central shaft; Guide the linear gathering sill of said aperture shutter drive division driving shaft with straight line in a side of above-mentioned central shaft long and narrow hole; Guide the hinge axis gathering sill of above-mentioned link portions two ends hinge axis with curve in above-mentioned central shaft both sides.
Magnetic is preferably attached to the bottom of pedestal, and when coil was not powered, magnetic and above-mentioned magnet produced gravitation, prevent that above-mentioned magnet and diaphragm shutter drive division from moving.
Effect of the present invention:
Aperture shutter device according to minicam of the present invention, since used the different VCM of the camera module that embodies shutter and aperture with the existing driver that utilizes stepper motor or electromagnet (Voice Coil Motor: the linear driver of mode voice coil motor), so be suitable for compact and lighting.
In addition, camera module of the present invention is additional lock function, occupies minimum volume on existing ultraminiature camera module, and additional have mechanical shutter and aperture function, can improve image quality.
In addition, because adopt mechanical shutter and aperture and subsidiary the low power consumption function arranged, so be fit to be applied on the multiple portable machines such as PDA and mobile phone.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
Description of drawings
Fig. 1 is the structural drawing of explanation minicam structure;
Fig. 2 is the concept map that explanation is applicable to a plurality of optical instruments among Fig. 1;
Fig. 3 is to be the oblique view of aperture shutter device of the minicam of foundation with the embodiment of the invention;
Fig. 4 is the exploded perspective view of Fig. 3;
Fig. 5 is the assembled state back view of Fig. 3;
Fig. 6 is that the part of diaphragm shutter work among Fig. 4 connects front view (FV);
Fig. 7's is the switching manipulation synoptic diagram of aperture shutter device of the present invention;
Fig. 8's is according to the stressed synoptic diagram that concerns between coil electricity whether magnet and the magnetic;
The symbol description of major part in the accompanying drawing:
110: lid 111: light hole
120: coil 131,132: shutter baffle plate
133: link portions 134: central shaft
135: fixed shaft hole 139,140: hinge axis
150: diaphragm shutter drive division 151: magnet
154: driving shaft 160: pedestal
161,162: hinge axis guiding long and narrow hole 163: central shaft long and narrow hole
164: driving shaft guiding long and narrow hole 170: magnetic
Embodiment
Embodiment to the aperture shutter device of minicam with above-mentioned structure is described in detail below with reference to accompanying drawings.The aperture shutter device of minicam
Fig. 3 is the example schematic that is applicable to the aperture shutter device of minicam of the present invention; Fig. 4 is the decomposing schematic representation of Fig. 3; Fig. 5 is the assembled state back view of Fig. 3.
With reference to Fig. 3 and Fig. 4, its structure comprises: be transmitted light, have the lid 110 of light hole 111 at core; Be installed in the coil 120 of above-mentioned lid 110 1 sides; Be the above-mentioned light hole 111 of switch, a plurality of to the mutual crisscross shutter baffle plate 131,132 that carries out the axle center rotation; Drive the link portions 133 of a plurality of shutter baffle plates 131,132; Magnet 151 is installed in a side, and axle is connected on the link portions 133, drives the diaphragm shutter drive division 150 of link portions 133; Have guiding diaphragm shutter drive division 150 and link portions 133 and carry out a plurality of long and narrow holes of axle center rotation and the pedestal 160 of pilot hole; Be arranged on the magnetic 170 of pedestal 160 bottoms.
With reference to accompanying drawing, as follows for the operation instructions of the aperture shutter device of the minicam in the example according to the present invention described above.
With reference to Fig. 3, the core of lid 110 has the light hole 111 of light-permeable, in the one side coil 120 is housed.By utilizing the VCM mode of the magnet that is provided with on coil 120 and the inner moving part, can drive the diaphragm shutter drive division that is positioned at around the light hole 111, switch light hole 111.This aperture shutter device utilizes the electromagnetic force that produces between coil 120 and the magnet (not marking among the figure), comes switch light hole 111 by being arranged in light hole 111 diaphragm shutter drive division (figure does not mark) on every side.This aperture shutter device is as the part of entirety of lens package body, the perhaps part of ultraminiature camera structure, but the effect of carries out image brightness regulation and blocking-up image.It is than the mechanical shutter and the aperture structure that use standard module, have the accessory of use still less, occupy the less advantage of volume.Aperture shutter device of the present invention is applicable to the camera module on the portable terminal computer.
Fig. 4 is applicable to the aperture of minicam of the present invention and the decomposing schematic representation of shutter device.
With reference to Fig. 4, its structure comprises: a plurality of shutter baffle plates 131,132 of lid 110 bottoms; Drive the link portions 133 of a plurality of shutter baffle plates 131,132; Carry out straight-line diaphragm shutter drive division 150 by electromagnetic force; Pedestal 160 with a plurality of long and narrow holes 161,162,163,164; Magnetic thing magnetic 170.
In above-mentioned lid 110 bottoms, a plurality of shutter baffle plates 131,132, link portions 133, diaphragm shutter drive division 150 and pedestal 160 are combined into multi-ply construction.
Above-mentioned a plurality of shutter baffle plate 131,132 forms virtual light hole 118 being to be provided with a pair ofly on the relative position, center respectively with light hole 111, and the both sides that act on light hole 111 by link portions 133 are switch simultaneously.Above-mentioned a plurality of shutter baffle plate 131,133 has the structure of upper and lower stack toward each other, respectively connects one at the two ends of link portions 133, is center switch light hole 111 with central shaft 134.
Slip when above-mentioned top and bottom shutter baffle plate 131,132 are the guiding open operation forms pilot hole 136,137 respectively in the side.
The outstanding downwards central shaft 134 of core that is positioned at of above-mentioned link portions 133 is connected on the central shaft long and narrow hole 163 of pedestal 160, the fixed shaft hole 135 that forms on the side with above-mentioned central shaft 134 connects the stationary shaft of giving prominence on the opposite side of diaphragm shutter drive part 150 135, one end of above-mentioned link portions 133 is connected on the top shutter baffle plate 131, and the other end of link portions 133 is combined on the bottom shutter baffle plate 132.Like this, if be that the center drives driving shaft 154, because the upper end of link portions 133 and lower end slide with the opposite direction curve mutually, so top and bottom shutter baffle plate 131,132 switch light holes 111 with central shaft 134.
In addition, diaphragm shutter drive division 150 forms light hole 111 at core, is being positioned at attachment magnets 151 on the magnet groove 152 of a side; On opposite side, driving shaft 154 is connected on the driving shaft guiding long and narrow hole 164 of the fixed shaft hole 135 of link portions 133 and pedestal 160.
In addition, central part on pedestal 160 forms light hole 111, opposite side central part at pedestal 160 forms the central shaft long and narrow hole 163 that inserts link portions 133 central shafts 134, forms the linear long and narrow hole 164 of guiding driving shaft 154 on a side of central shaft long and narrow hole 163.On the outside of central shaft long and narrow hole 163, the top and the bottom long and narrow hole 161,162 of the top of formation connection link portions 133 and the bracket form of underneath hinges axle 139,140.
In addition, because the magnetic (that is, bar) of above-mentioned relatively magnet 151 bottoms is installed in pedestal 160 bottoms, so when coil 120 no powers, the gravitation by between itself and the magnet makes magnet 151 and diaphragm shutter drive part 150 be in the tram.
When driving diaphragm shutter drive division 150, shutter baffle plate 131,132 carries out multiple straight line, curve according to the specific long and narrow hole shape that is had on the shutter baffle plate and rotatablely moves, simultaneously switch light hole 111.
Be the driving of control diaphragm shutter drive division 150, coil 120 and magnet 151 are relative, by size, direction and the conduction time of electric current are provided to coil 120, produce specific electromagnetic force between coil 120 and magnet 151.Therefore, diaphragm shutter drive division 150 on pedestal 160 to the left or the right side straight line move, along with the left side of diaphragm shutter drive division 150/move right, link portions 133 is that central shaft rotates along with driving shaft 154 carries out bent axle with central shaft 134; Along with the axle rotation of link portions 133, a plurality of shutter baffle plate 131,132 switch light holes 111.Here, magnet and coil 120 drive by long-range navigation thatch power.
When carrying out this switching manipulation, driving shaft 154 rotates along with long and narrow hole 164 carries out straight line, and hinge axis 139,140 rotates along with long and narrow hole 161,162 carries out curve.
The present invention is the electromagnetic force that produces by between coil 120 and the magnet 151, makes diaphragm shutter drive division 150 do rectilinear motion; Said aperture shutter drive division 150 makes with rotatablely moving of a link portions of forming 133 and is positioned at light hole 111 a plurality of shutter baffle plates 131,132 switch light holes 111 on every side, regulate brightness of image and the time shutter of image on imageing sensor with this, play the effect of shutter and aperture.
In addition, in general, in the driver that utilizes electromagnetic force between coil 120 and the magnet 151, need continued power, so there is the shortcoming that will constantly consume electric power for keeping certain displacement.But in the present invention, the additional body 170 that is magnetic on the part of aperture shutter device, even so not to coil 120 power supplies, rely on the gravitation that produces between magnetic 170 and the magnet 151, magnet 151 and 150 contacts of diaphragm shutter drive part are on the fixation construct lid 110 or pedestal 160 of shutter baffle plate 131,132, rely on its contact friction, can keep the lock operation of certain displacement.
Fig. 5 is the assembled state example back view that is applicable to aperture shutter device of the present invention; Fig. 6 is the assembled state front view (FV) of aperture shutter device.
With reference to Fig. 5 and Fig. 6, on diaphragm shutter drive division 150, it is relative with coil 120 on being wrapped in lid 110 to be installed in the magnet 151 of a side; The pilot hole 155 that forms in the both sides of magnet 151 connects the guide protrusions 113 of giving prominence to from lid 110.In addition, be inserted in the long and narrow hole 164 of the fixed shaft hole 135 of link portions 133 and pedestal 160, at the driving shaft 154 that the opposite side of diaphragm shutter drive division 150 forms along with long and narrow hole 164 is done a left side/right linear slide.
Also have, on the opposite side of top shutter baffle plate 131, be connected on the upper hinge axle pilot hole 141 at upper hinge axle 139 outstanding on the end of link portions 133; On the opposite side of bottom shutter baffle plate 132, the outstanding underneath hinges axle 140 of the other end of link portions 133 is connected on the hinge axis pilot hole 142.Above-mentioned top and underneath hinges axle pilot hole 141,142 lead for the slip of shutter baffle plate 131,132, and when the axle of link portions 133 rotated, it slided in hinge axis pilot hole 141,142.
Like this, if drive diaphragm shutter drive division 150, driving shaft 154 is done straight line and is moved along with the driving shaft guiding long and narrow hole 164 of pedestal 160; Simultaneously, be benchmark with the central shaft 134 that is fixed on the link portions 133 on the pedestal 160, intersect to slide in the two ends of link part 133, so bottom and top shutter baffle plate 131,132 are gathered switch light hole 111 to the center.
In addition, on the front/rear side of top and bottom shutter baffle plate 131,132, pilot hole 136,137 is state in an overlapping; Connect the projection 112 of giving prominence to from lid 110 on pilot hole 136,137, the above-mentioned guide protrusions 112 of guiding in the length range of pilot hole 136,137 is controlled moving of shutter baffle plate 131,132 with this.
The (a) and (b) of Fig. 7 are light hole switching manipulation synoptic diagram in the aperture shutter device of the present invention.
(a) of Fig. 7 is the open mode of light hole 111, if to coil 120 power supply, diaphragm shutter drive division 150 does not move, link portions 133 is connected on the shutter baffle plate 131,132 on the diaphragm shutter drive division 150, so that light hole 111 is in opening, be in relative position each other.
In this state, if according to a certain direction, the size of regulation and official hour be to coil 120 power supply, can produce electromagnetic force between coil 120 and magnet 151, the magnet 151 of respective drive portion and diaphragm shutter drive division 150 are done straight line and are moved.Simultaneously, top that connects with hinge portion 133 on diaphragm shutter drive division 150 and bottom shutter baffle plate 131,132 intersection mutually slide, and open light hole 111.That is, come the size and Orientation of the power of regulating action on magnet, and then regulate the switch degree of light hole by size, time and the direction of electric current on the regulating winding.
In other words, rely on the electromagnetic force that produces between coil 120 and the magnet 151, diaphragm shutter drive division 150 is done rectilinear motion; The hinge portion 133 of diaphragm shutter drive division 150 and assembling axle is that benchmark rotates along with the rectilinear motion of diaphragm shutter drive division 150 with central shaft 134.At this moment, the rotatablely moving of shutter baffle plate 131,132 corresponding link portions 133 of assembling axle done rectilinear motion on the link portions 133, carries out the aperture of symmetric execution switch light hole 111 and the operation of shutter.
On the one hand, can regulate the axle assembling position between diaphragm shutter drive division 150 and the link portions 133, utilize the principle of lever to regulate the movable displacement of actual diaphragm shutter drive division 150 and the movable displacement ratio of link portions 133 ends then.For example, its movable displacement is 1: 2 shown in (a) among above-mentioned Fig. 7.In this case, also be by size of current, time and direction in the coil 120 being changed, regulating the switch degree of light hole 111.Adjusting was clipped to an assembling position in 134 minutes from the central shaft of link portions 133 distance than, produce the shutter baffle plate 131,132 more greater or lesser and carry out rectilinear motion than the rectilinear motion amount of diaphragm shutter drive division 150.
Have with the Action Specification of the aperture shutter device of above same configuration as follows.
For obtain the image of shot object in camera apparatus, aperture shutter device is all opened light hole 111, because the entirety of lens package body well passes through light, so can obtain distinct image in imageing sensor.
At this moment, in the control section (not marking among the figure) of camera apparatus, be wrapped in not energising on the coil 120 of camera module lid 110 1 sides.At this moment, a plurality of shutter baffle plates make light hole 111 be in opening as shown in (a) among Fig. 7.
On the one hand, when taking the image of subject with camera apparatus, diaphragm shutter drive division 150 and shutter baffle plate 131,132 move shown in (b) among Fig. 7, close light hole 111, and the light that is injected on the lens combination was cut off in moment.
This process is, if provide the electric current of certain orientation and prescribed level to coil 120 from control section (not marking the figure), rely on the electromagnetic force that produces between magnet 151 and the coil 120, magnet 151 can move along rectilinear direction together with diaphragm shutter drive division 150.
Therefore, the link portions 133 that is connected on the driving shaft 154 of diaphragm shutter drive division 150 is the center rotation with central shaft 134, and driving shaft 154 is along with driving shaft guiding long and narrow hole 164 moves.Simultaneously, the top and the underneath hinges axle 139,140 that connect the link portions 133 of driving shaft 154 move with opposite direction mutually, and top and bottom shutter baffle plate 131,132 are gathered from the both sides of light hole 111, and light hole 111 is closed.
Identical therewith, because two shutter baffle plates 131,132 gather simultaneously from two side directions of light hole 111, so the light that enters from light hole 111 is cut off at a terrific speed.The rest image image quality of camera is determined by the speed of aperture shutter device.Aperture shutter device in this example is because of simple structure, and the translational speed of shutter section is fast, so can photograph the rest image of high-quality in imageing sensor.
In addition,, open light hole 111, provide reciprocal electric current to coil 120 for finishing shooting to subject.Produce reverse electromagnetic force between coil 120 and magnet 151, diaphragm shutter drive division 150 and magnet 151 move together round about.
Therefore, link portions 133 is that the center rotates round about with central shaft 104, and driving shaft 124 is along with the driving shaft guiding long and narrow hole 164 of two shutter baffle plates 131,132 moves round about.Therefore, two shutter baffle plates 131,132 are opened light hole 111.If light hole 111 is opened, control part will be closed the electric current that leads to coil 120.At this moment, because of magnetic 170 and magnet 151 gravitation each other, diaphragm shutter drive division 150 and magnet 151 are in the tram.
The (a) and (b) of Fig. 8 are according to the stressed synoptic diagram that concerns between coil electricity whether magnet and the magnetic.
Shown in Fig. 8 (a), not energising does not produce under the situation of power between coil 120 and magnet 151 on the coil 120, relies on the gravitation (F1) between magnet 151 and the magnetic to produce friction force (F3).Even it has the lock function that no power also can keep current location, particularly, also can provide the lock function of maintenance current location because gravity etc. is outer thereby produce under the situation of undesirable driving force (F2).
In addition, shown in Fig. 8 (b), if electric current 45 is provided on coil 120, produce driving force (F4) by coil 120 and magnet 151, when the friction force (F3) that the gravitation (F1) that driving force (F4) ratio dependence magnet 151 and magnetic are 26 is produced is bigger, diaphragm shutter drive division 150 just is moved, and makes shutter baffle plate (not marking among the figure) switch light hole 111.In addition, switch changed position at this moment (d) can be controlled by size and the time of regulating electric current (I1); The switch direction can be regulated by the direction that changes electric current (I1).
In addition, magnet also can be positioned on the diaphragm shutter drive division of movable part among the present invention, coil is arranged on the fixed part, or coil is installed on the movable part, and magnet is installed on the lid 110 as fixed part, also can the switch light hole.
So far, with example of the present invention the center of observation, in the technical field of the invention, the personnel with certain knowledge can realize the embodiment of detailed description of the present invention and different shape in the scope of the technology of the present invention thought.Above embodiment is used for illustrating purpose of the present invention, and is not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (5)
1. the aperture shutter device of a minicam is characterized in that:
In the minicam of the entirety of lens package body of being made up of above lens at the image that comprises promising acquisition subject, the external circuit portion that will become the imageing sensor of electric power signal, above-mentioned imageing sensor by the image transformation of said lens, aperture shutter device comprises following components;
Core has the light hole of light-permeable, and the coil of control aperture and shutter work is installed in the lid of a side;
Core has the light hole of light-permeable, and opposite side has the pedestal of a plurality of long and narrow holes;
Rotate to the mutual crisscross axle center of carrying out, come a plurality of shutter baffle plates of the above-mentioned light hole of switch with this;
In said base upper support axle center, make above-mentioned shutter baffle plate carry out the link portions of axle center rotation;
In a side magnet being installed, by the electromagnetic force between above-mentioned coil and the magnet, is benchmark with center one side of link portions, does straight reciprocating motion along the long and narrow hole of said base, drives the diaphragm shutter drive division of link portions with this.
2. the aperture shutter device of minicam as claimed in claim 1 is characterized in that:
Described shutter baffle plate is being on the position at corresponding center with above-mentioned light hole, forms overlapping top and bottom shutter baffle plate, and the operation by above-mentioned link portions, the above-mentioned light hole of switch simultaneously from both sides.
3. the aperture shutter device of minicam as claimed in claim 1 is characterized in that:
Described above-mentioned link portions comprises:
Be connected the central shaft on the central shaft long and narrow hole that is positioned on the central part aforesaid substrate;
Driving shaft on the said aperture shutter drive division is connected the drive shaft hole of above-mentioned central shaft one side;
Two ends are connected to the hinge axis on above-mentioned a plurality of shutter baffle plate.
4. the aperture shutter device of minicam as claimed in claim 3 is characterized in that:
Described pedestal comprises:
Above-mentioned central shaft is connected central shaft long and narrow hole on the opposite side central part;
For guide the linear driving shaft gathering sill of said aperture shutter drive division with straight line in a side of above-mentioned central shaft long and narrow hole;
For guide the hinge axis gathering sill of above-mentioned link portions two ends hinge axis with curve in above-mentioned central shaft both sides.
5. the aperture shutter device of minicam as claimed in claim 1 is characterized in that:
Described magnetic is attached to the bottom of pedestal, and not when coil power supply, magnetic and above-mentioned magnet produce gravitation, prevent that above-mentioned magnet and diaphragm shutter drive division from moving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100380960A CN101266386A (en) | 2007-03-15 | 2007-03-15 | Miniature camera aperture shutter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100380960A CN101266386A (en) | 2007-03-15 | 2007-03-15 | Miniature camera aperture shutter device |
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| CN101266386A true CN101266386A (en) | 2008-09-17 |
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| CNA2007100380960A Pending CN101266386A (en) | 2007-03-15 | 2007-03-15 | Miniature camera aperture shutter device |
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| CN104321698A (en) * | 2012-05-29 | 2015-01-28 | 西门子医疗保健诊断公司 | Shutter assembly for a luminescence-based sample analyzer |
| US9658159B2 (en) | 2013-03-20 | 2017-05-23 | Siemens Healthcare Diagnostics Inc. | Light and shutter for a sample analyzer |
| CN107976857A (en) * | 2016-10-20 | 2018-05-01 | 台湾东电化股份有限公司 | Optical system |
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