CN101046597B - Electronic zooming device and method for camera - Google Patents
Electronic zooming device and method for camera Download PDFInfo
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- CN101046597B CN101046597B CN2006100683808A CN200610068380A CN101046597B CN 101046597 B CN101046597 B CN 101046597B CN 2006100683808 A CN2006100683808 A CN 2006100683808A CN 200610068380 A CN200610068380 A CN 200610068380A CN 101046597 B CN101046597 B CN 101046597B
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Abstract
The present invention discloses electron zooming device and method for camera. The electron zooming device has one rod for zooming made of radially magnetized magnet and two current inducing magnets to receive current signal for providing magnetic force attracting the rod and shifting the rod to realize focus regulation. One other embodiment has one piezoelectric element, one resistance part connected to the piezoelectric element and one rod normally fixed by means of static friction force. When the piezoelectric element responds to one voltage signal to change volume, the resistance part is shifted; and after the voltage signal is eliminated, the rod is fixed in the original place and the focus distance is regulated to realize electronic zooming.
Description
Technical field
The present invention relates to a kind of zoom mechanism, particularly relate to a kind of mobile phone camera electronics zoom mechanism.
Background technology
Camera all has zoom mechanism, so that its camera lens can be taken thing to be taken the photograph with suitable focal length, popular digital camera and mobile phone camera also is like this at present.Figure 1 shows that the synoptic diagram of the zoom lens control device of a camera commonly used.When the user adjusted driving lever 12 appended on zoom lens control device 10 camera lenses 11, zoom mechanism can adjust corresponding focal length automatically, realized the zoom function of camera lens thus.
For general digital camera, its zoom mechanism utilizes step motor as the instrument of transmission driving lever amount of movement coking apart from adjustment amount, yet the identical transmission instrument of the uncomfortable use of mobile phone, because the volume of mobile phone camera is big not as general digital camera, step motor is not suitable for inserting in the mobile phone.Moreover, driving lever is not suitable for being located on the mobile phone, because of mobile phone is that the user carries or hold often the thing in hand at any time, the existence of driving lever is unfavorable for carrying and depositing, more do not accepted in appearance by the user yet, because of the existence of its driving lever must be to mirror head outer shell holes in addition, again because of must be with manual mode of operation, the high texture image product of mobile phone will have impaired.
At present existing mobile phone camera carries out zoom with electronic mechanism, as shown in Figure 2.On this zoom lens control device 20, wound with coil 22 on the lens barrel 21; When passing to electric current on the coil 22, the focal length of camera lens 21 just can be not different during galvanization with original coil 22, so can reach the function of adjusting focal length with the magnetic force control mode, this kind zoom mode is called solenoid valve zoom or voice coil motor (VCM) zoom.Because mobile phone camera is not the focal length transmission medium with the step motor, can reach the stepless zoom function so must be equipped with setting such as shell fragment.Though this kind design must be by user's manual manipulation, the mode of winding with coil can make the size of lens barrel and sectional area become big, and discomfort is that the compact product of cell phone type is used.
In view of the shortcoming of above-mentioned mobile phone camera commonly used, truly have the necessity of the autozoom function that proposes a kind of mobile phone camera at present, required with the singularity that meets mobile phone products.
Summary of the invention
For addressing the above problem, purpose of the present invention promptly is to propose the electronic zoom technology of camera.
A scheme of the present invention is a kind of electronic zooming device of camera, and it comprises a lens barrel, has an internal lens and an outside surface;
One rod member joins with the outside surface of this lens barrel, is a radial magnetizing magnet, and can moves on the particular path of a specific radian degree scope correspondence that this particular path has two sides, is respectively first side and second side; And
One electricity causes rod member travel mechanism, moves this rod member in order to respond a current signal, so that this rod member moves to this second side position from this first side position, wherein this electricity causes mobile rod member mechanism and comprises:
One resistance piece contacts with this rod member, and a stiction is provided so that when mobile and this rod member move simultaneously, this resistance piece is positioned at the zone beyond this lens barrel; And
One piezoelectric element joins with this resistance piece,
Wherein this piezoelectric element changes volume rapidly after receiving a corresponding voltage signal of this current signal, and drives this resistance piece and this rod member moves simultaneously, to realize zoom function.
In a preferred embodiment, if this corresponding voltage signal is a forward voltage signal, then this piezoelectric element becomes big or diminishes, if this corresponding voltage signal is a negative voltage signal, then the past reverse direction of this piezoelectric element diminishes or becomes big, so that this rod member moves toward both direction.
In a preferred embodiment, this voltage signal promptly is removed after adding to this piezoelectric element; Or
This resistance piece is one to have the block of anchor clamps, and with this piezoelectric element of this clamp clamps, wherein:
Should be when this first side shifting when this rod member, the corresponding voltage signal of this piezoelectric element is a forward voltage signal; Should be when this second side shifting when this rod member, the corresponding voltage signal of this piezoelectric element is a negative voltage signal; Or
This current signal and this corresponding voltage signal have a plurality of level, so that this piezoelectric element has a plurality of volumes.
In a preferred embodiment, this camera is a mobile phone camera.
Another program of the present invention is a kind of electronic zoom method of camera, activate a rod member by a voltage signal, so that this rod member moves to one second focal position (i.e. second side position) from one first focal position (i.e. first side position), thereby realize the autozoom function, wherein the step that moves this rod member by voltage signal comprises the following step:
One resistance piece is provided, contacts with this rod member, and provide a stiction with when mobile and this rod member move simultaneously;
One piezoelectric element is provided, joins, make this voltage signal produce the volume change of this piezoelectric element with this resistance piece; And
Utilizing this piezoelectric element to drive this rod member moves.
In a preferred embodiment, this voltage signal has a plurality of level.
In a preferred embodiment, this rod member is to be formed by a radial magnetizing magnet.
In a preferred embodiment, utilizing this piezoelectric element to drive this rod member moves and comprises:
This voltage signal is added to this piezoelectric element, with this piezoelectric element of rapid change, wherein should be when this first side shifting when this rod member, this voltage signal is a forward voltage signal, should be when this second side shifting when this rod member, this voltage signal is a negative voltage signal; Or
This voltage signal has a plurality of level, so that this piezoelectric element has a plurality of volumes.
In a preferred embodiment, the step that moves this rod member by voltage signal comprises the following step:
Utilizing this voltage signal to produce a power moves to drive this rod member.
In a preferred embodiment, if this voltage signal is a forward voltage signal, then this piezoelectric element becomes big or diminishes, if this voltage signal is a negative voltage signal, then the past reverse direction of this piezoelectric element diminishes or becomes big, so that this rod member moves toward both direction.
In a preferred embodiment, this comprises the following step after making this voltage signal produce the volume change of this piezoelectric element: stop this voltage signal.
In a preferred embodiment, this resistance piece is one to have the block of anchor clamps, and this utilizes this piezoelectric element to drive the step that this rod member moves also to comprise the following step: with this piezoelectric element of this clamp clamps.
In a preferred embodiment, should be when one first side shifting when this rod member, this voltage signal is a forward voltage signal; Should be when one second side shifting when this rod member, this voltage signal is a negative voltage signal.
In a preferred embodiment, this camera is a mobile phone camera.
By implementing said apparatus and method, the electronic zooming device of camera must become miniaturization, built-inization and cheapization, and the camera lens quality is unaffected simultaneously, and more is applicable in the mobile phone camera.
Description of drawings
Fig. 1 is the forward sight diagrammatic cross-section of the manual zoom lens control device of a camera commonly used;
Fig. 2 be a mobile phone camera commonly used electronic zooming device on look synoptic diagram;
Fig. 3 is the front-view schematic diagram of electronic zooming device first embodiment of camera of the present invention;
Fig. 4 A is the magneticaction key diagram of a radial magnetizing magnet rod member and a magnetic;
Fig. 4 B is the magneticaction key diagram of general magnet rod member and magnetic;
Fig. 5 is the top view of electronic zooming device second embodiment of camera of the present invention;
Fig. 6 is the front sectional elevation of electronic zooming device the 3rd embodiment of camera of the present invention;
Fig. 7 is the front sectional elevation of electronic zooming device the 4th embodiment of camera of the present invention;
Fig. 8 is the flow chart illustration of electronic zoom method first embodiment of camera of the present invention; And
Fig. 9 is the flow chart illustration of electronic zoom method second embodiment of camera of the present invention.
Wherein, description of reference numerals is as follows:
30 electronic zooming devices, 31 lens barrels
32 rod members, 33 electricity cause rod member travel mechanism
34 current-induced magnetics, 35 coils
36 block pieces, 50 electronic zooming devices
54 shell fragments, 60 electronic zooming devices
65 coils, 66 current-induced magnetics
70 electronic zooming devices, 71 resistance pieces
72 piezoelectric elements
Embodiment
The present invention discloses a kind of electronic zooming device and method of camera, to be example with the mobile phone camera among the application and be described as follows by preferred embodiment, those skilled in the art can implement the present invention in view of the above, yet these embodiment only are preferred version wherein, and enforcement of the present invention is not limited only to described preferred embodiment.
Figure 3 shows that the front-view schematic diagram of first embodiment of the electronic zooming device of camera of the present invention.As shown in the figure, this device 30 comprises a lens barrel 31, a rod member 32 and an electricity and causes rod member travel mechanism 33.Lens barrel 31 has an internal lens and an outside surface.Rod member 32 joins with the outside surface of lens barrel 31, and rod member with general camera is different is that it is a radial magnetizing magnet for they, and its magnetic line of force distribution and direction are with generally the magnet person is different.Electricity causes rod member travel mechanism 33 and comprises a current-induced magnetic 34, a coil 35 and block piece 36, wherein coil 35 is set around on this current-induced magnetic 34, make current-induced magnetic 34 produce magnetic in order to respond a current signal, this magnetic 34 moves this rod member 32, so that rod member 32 moves to these block piece 36 positions from the original position of this current-induced magnetic 34.Because rod member 32 is moved, thus the focal length change, so these magnetic 34 positions are referred to herein as one first focal position, and these block piece 36 positions are known as one second focal position.
In the above-mentioned explanation, the mobile of rod member 32 designed in certain radian degree scope, and the two ends of this particular path are current-induced magnetic 34 and block piece 36, i.e. first and second focal position of rod member 32.When user's desire is adjusted into another focal length with original focal length, can press to aim on the mobile phone and adjust the set button of camera focus, this moment, above-mentioned current signal just resulted from the coil 35, and therefore current-induced magnetic 34 just has magnetic, and this magnetic just makes rod member 32 move and makes focal length obtain to adjust.Wherein, current-induced magnetic 34 can be an insulator etc., so long as can the response external electric current and the material that produces obvious magnetic all is suitable for, this type of material generally is called soft magnetism.Rod member 32 is a radial magnetizing magnet, and its special magnetic line of force distributes and direction makes it more easily by magnetic 34 past specific direction effects, just so rod member 32 is moved with the specified direction of the present invention, shown in Fig. 4 A.If as rod member 32 materials, then the action direction that is subjected to of rod member 32 is many with general magnet, a little less than the suffered net effort, the effect of rod member 32 moving directions of realizing for institute of the present invention desire is relatively poor, shown in Fig. 4 B.
In addition, this Automatic zoom lens focusing device also can be realized the multistage zoom function, as long as again establishing with a shell fragment more, shown in Figure 5 be the electronic camera zoom lens control device (second embodiment) with shell fragment of the present invention on look diagrammatic cross-section.As shown in the figure, this device 50 also has a base 53, is positioned under this lens barrel 31, and a rod member 32 is arranged on the lens barrel 31, and this shell fragment 54 is located between base 53 and the lens barrel 31.Please consult shown in Figure 3 simultaneously, when the user imports a relatively low corresponding current signal on cell phone keyboard, magnetic 34 also provides relatively low magnetic to rod member 32, being equivalent to provides a low-force to lens barrel 31, this moment, shell fragment 54 provided lens barrel 31 with an equilibrant on the opposite side of lens barrel 31, and the position of lens barrel 31 can excessively not moved on first and second focal position of corresponding rod member 32.Wherein this current signal has a plurality of varying levels, so long as not the neither meeting of the current signal of maximum or minimum levels rod member 32 is moved on this first and second focal position, and can be fixed on the position between first and second focal position.Therefore, the multistage zoom function can be realized on device of the present invention.
Figure 6 shows that the 3rd embodiment of the electronic zooming device of camera of the present invention.As shown in the figure, this device 60 is suitable with the device of Fig. 3, but it there is no the existence of block body, changes in Fig. 3 block body part and establishes with another current-induced magnetic 66, also also is arranged with a coil 65 on it.At this moment, decide on the required focal length that transfers to of user, in two current-induced magnetics 34 and 66 only a current-induced magnetic passed to electric signal, so can mobile rod member 32 and realize two sections zoom functions.When adding the shell fragment of Fig. 5 illustrative, the multistage zoom function also can realize that it is the 4th embodiment of the electronic zooming device of camera of the present invention.At this moment, the set part of shell fragment can be between this rod member 32 and this current-induced magnetic 34, between rod member 32 and this another current-induced magnetic 66, also can establish a shell fragment respectively between this rod member and this current-induced magnetic and between this another current-induced magnetic.Similarly, this current signal has a plurality of varying levels, and rod member 32 promptly responds this varying level current signal and is displaced between this first and second focal position.
Figure 7 shows that the 5th embodiment of the electronic zooming device of camera of the present invention.As shown in the figure, this device 70 comprises a lens barrel 31, a rod member 32, a resistance piece 71 and a piezoelectric element 72.Resistance piece 71 and rod member 32 join fixing, are positioned at this lens barrel zone in addition.Piezoelectric element 72 and this resistance piece 71 join fixing, and have a designated volume.When the user presses the particular key of lower keyboard, piezoelectric element 72 receive a current signal, the corresponding voltage signal of this current signal makes piezoelectric element 72 become an increase volume from this designated volume, and promotion resistance piece 71 drive rod members 32 move, because rod member 32 positions are changed, thereby realize zoom function.Wherein, this current signal (voltage signal) is removable after rod member 32 moves, and with saving electric power, and rod member 32 is still fixed by resistance piece 71 because of the existence of friction force.In above-mentioned, this resistance piece 71 can be a block with anchor clamps, and by this clamp clamps piezoelectric element 72, so that piezoelectric element 72 realizes promoting really the function of resistance piece 71.In addition, above-mentioned explanation is to move toward a direction at rod member, if desire moves rod member toward other direction, provide this moment one with the voltage of above-mentioned voltage reversal, so that the volume of piezoelectric element is toward changing in the other direction (promptly become big or diminish), even so rod member moves toward two directions.
As shown in Figure 8, it is the flow chart illustration of first embodiment of the electronic zoom method of camera of the present invention, and this method comprises the following step.At first, form a rod member (step 81) by a radial magnetizing magnet.Then, provide a current signal (step 82).Then, produce a magnetic force (step 83) by this current signal.At last, this rod member is moved between one first focal position and one second focal position, to change focal length (step 84) by this magnetic force.
In a preferred embodiment, this current signal has a plurality of level, and this rod member is moved on a plurality of positions between first and second focal position.
As shown in Figure 9, it is the flow chart illustration of second embodiment of the electronic zoom method of camera of the present invention, and this method comprises the following step.At first, provide a voltage signal (step 91).Then, this voltage signal is provided on the piezoelectric element and produces one rapidly and changed volume (step 92).Then, change volume by this and produced a power (step 93).Then, drive a rod member, to change focal length (step 94) by this power.Then, stop this voltage signal (step 95), this moment rod member still because of and resistance piece between friction force rest on this position.Certainly, above-mentioned voltage signal has changed and has reached at its volume and also can exist after changing focal position, but still to stop this signal for better, because so can save electric power.In addition, above-mentioned explanation is moved toward a direction at rod member, if desire moves rod member toward other direction, provide this moment one with the voltage of above-mentioned voltage reversal, so that the volume of piezoelectric element is toward changing in the other direction (promptly become big or diminish), even so rod member moves toward two directions.
Because this method is applicable to said apparatus at least, thus the preferred embodiment of all said methods all can illustrate and know by the reference said apparatus, do not add at this and give unnecessary details.
Owing to only use magnet, coil and current-induced magnetic in the electronic zooming device of camera, so it is with low cost; Because rod member is placed within the phone housing and shell fragment also is positioned at the below of lens barrel, so its volume is able to miniaturization, while camera lens quality is not affected, so this electronic zooming device is highly suitable in the mobile phone camera of miniaturization again.
The present invention can do various modifications by those skilled in the art, yet all will fall in the protection domain of claims.
Claims (13)
1. the electronic zooming device of a camera comprises:
One lens barrel has an internal lens and an outside surface;
One rod member joins with the outside surface of this lens barrel, is a radial magnetizing magnet, and can moves on the particular path of a specific radian degree scope correspondence that this particular path has two sides, is respectively first side and second side; And
One electricity causes rod member travel mechanism, moves this rod member in order to respond a current signal, so that this rod member moves to this second side position from this first side position, wherein this electricity causes mobile rod member mechanism and comprises:
One resistance piece contacts with this rod member, and a stiction is provided so that when mobile and this rod member move simultaneously, this resistance piece is positioned at the zone beyond this lens barrel; And
One piezoelectric element joins with this resistance piece,
Wherein this piezoelectric element changes volume rapidly after receiving a corresponding voltage signal of this current signal, and drives this resistance piece and this rod member moves simultaneously, to realize zoom function.
2. the electronic zooming device of camera as claimed in claim 1, wherein:
If this corresponding voltage signal is a forward voltage signal, then this piezoelectric element becomes big or diminishes, if this corresponding voltage signal is a negative voltage signal, then the past reverse direction of this piezoelectric element diminishes or becomes big, so that this rod member moves toward both direction.
3. the electronic zooming device of camera as claimed in claim 1, wherein:
This voltage signal promptly is removed after adding to this piezoelectric element; Or
This resistance piece is one to have the block of anchor clamps, and with this piezoelectric element of this clamp clamps, wherein:
Should be when this first side shifting when this rod member, the corresponding voltage signal of this piezoelectric element is a forward voltage signal; Should be when this second side shifting when this rod member, the corresponding voltage signal of this piezoelectric element is a negative voltage signal; Or
This current signal and this corresponding voltage signal have a plurality of level, so that this piezoelectric element has a plurality of volumes.
4. the electronic zooming device of camera as claimed in claim 1, wherein this camera is a mobile phone camera.
5. the electronic zoom method of a camera, activate a rod member with a voltage signal, so that this rod member is that first side position moves to i.e. second side position of one second focal position from one first focal position, to reach the autozoom function, wherein the step that moves this rod member by voltage signal comprises the following step:
One resistance piece is provided, contacts with this rod member, and provide a stiction with when mobile and this rod member move simultaneously;
One piezoelectric element is provided, joins, make this voltage signal produce the volume change of this piezoelectric element with this resistance piece; And
Utilizing this piezoelectric element to drive this rod member moves.
6. the electronic zoom method of camera as claimed in claim 5, wherein this voltage signal has a plurality of level.
7. the electronic zoom method of camera as claimed in claim 5, wherein this rod member is to be formed by a radial magnetizing magnet.
8. the electronic zoom method of camera as claimed in claim 5, wherein utilize this piezoelectric element to drive this rod member and move and comprise:
This voltage signal is added to this piezoelectric element, with this piezoelectric element of rapid change, wherein should be when this first side shifting when this rod member, this voltage signal is a forward voltage signal, should be when this second side shifting when this rod member, this voltage signal is a negative voltage signal; Or
This voltage signal has a plurality of level, so that this piezoelectric element has a plurality of volumes.
9. the electronic zoom method of camera as claimed in claim 5 wherein comprises the following step by the step that voltage signal moves this rod member:
Utilizing this voltage signal to produce a power moves to drive this rod member.
10. the electronic zoom method of camera as claimed in claim 9, wherein if this voltage signal is a forward voltage signal, then this piezoelectric element becomes big or diminishes, if this voltage signal is a negative voltage signal, then the past reverse direction of this piezoelectric element diminishes or becomes big, so that this rod member moves toward both direction.
11. the electronic zoom method of camera as claimed in claim 9, wherein:
This comprises the following step after making this voltage signal produce the volume change of this piezoelectric element: stop this voltage signal.
12. the electronic zoom method of camera as claimed in claim 9, wherein this resistance piece is one to have the block of anchor clamps, and this utilizes this piezoelectric element to drive the step that this rod member moves also to comprise the following step: with this piezoelectric element of this clamp clamps.
13. the electronic zoom method of camera as claimed in claim 9 wherein should be when one first side shifting when this rod member, this voltage signal is a forward voltage signal; Should be when one second side shifting when this rod member, this voltage signal is a negative voltage signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100683808A CN101046597B (en) | 2006-03-30 | 2006-03-30 | Electronic zooming device and method for camera |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006100683808A CN101046597B (en) | 2006-03-30 | 2006-03-30 | Electronic zooming device and method for camera |
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| CN101046597A CN101046597A (en) | 2007-10-03 |
| CN101046597B true CN101046597B (en) | 2010-10-06 |
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| CN2006100683808A Expired - Fee Related CN101046597B (en) | 2006-03-30 | 2006-03-30 | Electronic zooming device and method for camera |
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| JP2019529028A (en) * | 2016-09-16 | 2019-10-17 | スロート スコープ ピーティーワイ リミテッド | Human body opening inspection system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080407A (en) * | 1992-06-19 | 1994-01-05 | 竹松良行 | The autofocus mechanism of camera |
| CN1368658A (en) * | 2001-02-09 | 2002-09-11 | 力捷电脑股份有限公司 | Automatic focusing mechanism and method |
| CN2539201Y (en) * | 2002-04-29 | 2003-03-05 | 金宝电子工业股份有限公司 | Automatic focusing mechanism for digital camera |
| CN2689284Y (en) * | 2003-12-08 | 2005-03-30 | 鸿富锦精密工业（深圳）有限公司 | Digital camera with variable focus mechanism and mobile telephone therewith |
| CN2689266Y (en) * | 2003-09-05 | 2005-03-30 | 明基电通股份有限公司 | Lens controller of digital camera |
-
2006
- 2006-03-30 CN CN2006100683808A patent/CN101046597B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080407A (en) * | 1992-06-19 | 1994-01-05 | 竹松良行 | The autofocus mechanism of camera |
| CN1368658A (en) * | 2001-02-09 | 2002-09-11 | 力捷电脑股份有限公司 | Automatic focusing mechanism and method |
| CN2539201Y (en) * | 2002-04-29 | 2003-03-05 | 金宝电子工业股份有限公司 | Automatic focusing mechanism for digital camera |
| CN2689266Y (en) * | 2003-09-05 | 2005-03-30 | 明基电通股份有限公司 | Lens controller of digital camera |
| CN2689284Y (en) * | 2003-12-08 | 2005-03-30 | 鸿富锦精密工业（深圳）有限公司 | Digital camera with variable focus mechanism and mobile telephone therewith |
Non-Patent Citations (3)
| Title |
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| CN 1080407 A,图7. |
| JP平8-234092A 1996.09.13 |
| 同上. |
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