CN102841487A - Lens continuous moving anti-collision device and method - Google Patents
Lens continuous moving anti-collision device and method Download PDFInfo
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- CN102841487A CN102841487A CN2011101681410A CN201110168141A CN102841487A CN 102841487 A CN102841487 A CN 102841487A CN 2011101681410 A CN2011101681410 A CN 2011101681410A CN 201110168141 A CN201110168141 A CN 201110168141A CN 102841487 A CN102841487 A CN 102841487A
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Abstract
The invention relates to a lens continuous moving anti-collision device and a method. The lens continuous moving anti-collision device comprises an optical module, a driving module and a linkage controller, wherein the optical module comprises a telescopic lens cone and a focusing lens set arranged in the telescopic lens cone; the driving module is used for driving the optical module to displace, wherein the driving module comprises a first motor and a second motor; the first motor is used for driving the telescopic lens cone to axially telescopically displace; the second motor is used for adjusting a position of the focusing lens set in the telescopic lens cone; and the linkage controller is used for controlling linkage between the first motor and the second motor, as well as controlling a rotating speed of the first motor to reach a state of being in direct proportion to the rotating speed of the second motor, so that the telescopic lens cone and the focusing lens set cannot be collided to each other during a linkage process.
Description
Technical field
The invention relates to the device of optical instrument, and particularly relevant for a kind of camera lens interlock collision avoidance system and method thereof.
Background technology
The trend of handheld apparatus outfit image extraction modules such as mobile phone, PDA, digital camera, video camera was more prevalent in recent years; Be accompanied by the requirement of product to the hand-held apparatus function; Performance better reaches under the littler market demand of volume, and the optical image-taking module has faced the more double requirements of high image quality and miniaturization.When using handheld apparatus to carry out filming image, the convergent-divergent of camera lens and focusing are the indispensable functions of each optical image-taking module.
Existing design is respectively with different motor driven convergent-divergent lens barrels and focusing mirror group; The action that makes it take in and launch; Both have separately CD-ROM drive motor and mechanism to this kind practice because of convergent-divergent lens barrel and focusing mirror group; When wherein arbitrary motor rotary speed is too fast or slow excessively, just can cause convergent-divergent lens barrel and focusing mirror group to be collided each other, and then the situation that has member to damage take place.
Summary of the invention
The technical matters that the present invention will solve is; To in the prior art with different motor driven convergent-divergent lens barrels and focusing mirror group, the defective of collision each other easily; A kind of camera lens interlock collision avoidance system is provided; To overcome above-mentioned convergent-divergent lens barrel and focusing mirror group in the process of interlock, because of wherein arbitrary motor rotary speed is too fast or slow excessively, and the problem of collision each other takes place.
The technical solution adopted for the present invention to solve the technical problems is, proposes a kind of camera lens interlock collision avoidance system, and it comprises optical module, driver module and sequential controller.Optical module comprises convergent-divergent lens barrel and focusing mirror group.Focusing mirror group is positioned at the convergent-divergent lens barrel.Driver module carries out displacement in order to drive optical module, and wherein, driver module comprises first motor and second motor.First motor carries out the axial stretching displacement in order to drive the convergent-divergent lens barrel.Second motor is in order to the position of adjustment focusing mirror group in the convergent-divergent lens barrel.Sequential controller is in order to controlling first motor and second motor interlock each other, and the rotating speed of controlling first motor is proportional to the rotating speed of second motor, and convergent-divergent lens barrel and focusing mirror group can not collided in the interlock process each other.
Saying further, in other embodiment of present technique aspect, the rotating speed of the rotating speed of first motor and second motor proportional relation that can be in line.Moreover the slope of this straight line proportional relation can be 0.793.In addition, the step number scope of the first motor driven convergent-divergent lens barrel can go on foot to 110 steps by-876.The step number scope of second motor driven focusing mirror group can go on foot to 512 steps by-727.
According to another embodiment of present technique aspect; Propose a kind of camera lens interlock collision avoidance system, it comprises convergent-divergent lens barrel, focusing mirror group, first motor, second motor and sequential controller, and focusing mirror group is positioned at the convergent-divergent lens barrel; First motor is connected with the convergent-divergent lens barrel; And drive the convergent-divergent lens barrel and carry out the axial stretching displacement, second motor is connected with the mirror group of focusing, and adjusts this position of focusing mirror group in the convergent-divergent lens barrel.Wherein, sequential controller is in order to controlling first motor and second motor interlock each other, and the rotating speed of controlling first motor is proportional to the rotating speed of second motor, and convergent-divergent lens barrel and focusing mirror group can not collided in the interlock process each other.
Saying further, in other embodiment of present technique aspect, the rotating speed of the rotating speed of first motor and second motor proportional relation that can be in line.In addition, the slope of aforementioned straight line proportional relation can be 0.793.
Another technological aspect of the present invention is to provide a kind of camera lens interlock avoiding collision, to overcome above-mentioned convergent-divergent lens barrel and focusing mirror group in the process of interlock, because of wherein arbitrary motor rotary speed is too fast or slow excessively, and the problem of collision each other takes place.
According to present technique aspect one embodiment, a kind of camera lens interlock avoiding collision is proposed, comprise the following step at least: selected first motor carries out the axial stretching displacement to drive the convergent-divergent lens barrel.Selected second motor is with the position of adjustment focusing mirror group in the convergent-divergent lens barrel.When calculating convergent-divergent lens barrel overtaking collision focusing mirror group, first slope value of first motor and both rotating speeds of second motor.When calculating focusing mirror group overtaking collision convergent-divergent lens barrel, second slope value of first motor and both rotating speeds of second motor.Utilize sequential controller to control first motor and second motor, the slope value that makes both rotating speeds is between first slope value and second slope value.
Saying further; In other embodiment of present technique aspect; Can comprise following step again: the step number scope of controlling the first motor driven convergent-divergent lens barrel goes on foot to 110 steps for-876; And the step number scope of controlling second motor driven focusing mirror group for-727 steps to 512 steps, and then to make the slope of first motor and both rotating speeds of second motor be 0.793.
By this, above-mentioned all embodiments utilize the mode of sequential controller with the slope interlock, guarantee that convergent-divergent lens barrel and focusing mirror group keep certain interval in the process of interlock, and do not have the situation generation of both collisions.
Description of drawings
Fig. 1 illustrates the functional block diagram of the camera lens interlock collision avoidance system of an embodiment of the present invention.
Fig. 2 illustrates the functional block diagram of the camera lens interlock collision avoidance system of another embodiment of the present invention.
Fig. 3 illustrates the flow chart of steps of the camera lens interlock avoiding collision of the another embodiment of the present invention.
Fig. 4 illustrates the slope graph of a relation of one embodiment of the invention.
Fig. 5 illustrates the transition diagram that concerns of convergent-divergent lens barrel among Fig. 4 and focusing mirror group.
Embodiment
Fig. 1 illustrates the functional block diagram of the camera lens interlock collision avoidance system of an embodiment of the present invention.As shown in Figure 1, camera lens interlock collision avoidance system 100 comprises optical module 110, driver module 120 and sequential controller 130.Sequential controller 130 controls are by the mode of slope interlock, and control and driving module 120 is to avoid the situation of optical module 110 internals damaged in collision.
Optical module 110 comprises convergent-divergent lens barrel 111 and focusing mirror group 112.Focusing mirror group 112 is positioned at convergent-divergent lens barrel 111, and the user can change the position of focusing mirror group 112 in convergent-divergent lens barrel 111, changes focal length and reaches the effect to focus.
Driver module 120 carries out displacement in order to drive optical module 110, and wherein, driver module 120 comprises first motor 121 and second motor 122.First motor 121 carries out the axial stretching displacement in order to drive convergent-divergent lens barrel 111.Second motor 122 is in order to the position of adjustment focusing mirror group 112 in convergent-divergent lens barrel 111.
Sequential controller 130 is in order to control first motor 121 and second motor 122 interlock each other; And the rotating speed of controlling first motor 121 is proportional to the rotating speed of second motor 122; In this embodiment, the rotating speed of first motor 121 and second motor 122 proportional relation that is in line.Thus; Convergent-divergent lens barrel 111 and focusing mirror group 112 are in the interlock process; Because sequential controller 130 can be along with the time be adjusted the rotating speed of first motor 121 and second motor 122, the situation that does not therefore have convergent-divergent lens barrel 111 and the 112 mutual collisions of focusing mirror group takes place.
How the rotating speed of first motor 121 and second motor 122 is adjusted as for sequential controller 130, this thin portion content partly will be explained in follow-up camera lens interlock avoiding collision 300.
Fig. 2 illustrates the functional block diagram of the camera lens interlock collision avoidance system of an embodiment of the present invention.As shown in Figure 2, camera lens interlock collision avoidance system 200 comprises convergent-divergent lens barrel 210, focusing mirror group 220, first motor 230, second motor 240 and sequential controller 250.Sequential controller 250 controls are controlled first motor 230 and second motor 240 by the mode of slope interlock, and then the situation of avoiding convergent-divergent lens barrel 210 and focusing mirror group 220 to bump and damage.
Focusing mirror group 220 is positioned at convergent-divergent lens barrel 210; First motor 230 is connected with convergent-divergent lens barrel 210; And drive convergent-divergent lens barrel 210 and carry out the axial stretching displacement, second motor 240 is connected with the mirror group 220 of focusing, and adjusts this position of focusing mirror group 220 in convergent-divergent lens barrel 210.
How the rotating speed of first motor 230 and second motor 240 is adjusted as for sequential controller 250, this thin portion content partly will be explained in follow-up camera lens interlock avoiding collision 300 equally.
Fig. 3 illustrates the flow chart of steps of the camera lens interlock avoiding collision of another embodiment of the present invention.As shown in Figure 3, the camera lens interlock avoiding collision 300 of this embodiment comprises the following step at least: at first, shown in step 310, selected first motor carries out the axial stretching displacement to drive the convergent-divergent lens barrel.Moreover shown in step 320, selected second motor is with the position of adjustment focusing mirror group in the convergent-divergent lens barrel.Then, shown in step 330, when calculating convergent-divergent lens barrel overtaking collision focusing mirror group, first slope value of first motor and both rotating speeds of second motor.Next, shown in step 340, when calculating focusing mirror group overtaking collision convergent-divergent lens barrel, second slope value of first motor and both rotating speeds of second motor.At last, shown in step 350, utilize sequential controller to control first motor and second motor, the slope value that makes both rotating speeds is between first slope value and second slope value.
In brief, sequential controller can be monitored first motor and second motor respectively along with the time, calculates the slope value of both rotating speeds at any time, and comes to control respectively the rotating speed of first motor and second motor according to the slope value drop point of calculating.Specifically; Can be divided into following three situation with first motor and the second motor driven convergent-divergent lens barrel and focusing mirror group by taking in to the process of launching: the first, when the slope value of first motor and both rotating speeds of second motor during greater than first slope value; First motor rotary speed of representative driving convergent-divergent lens barrel is too fast; At this moment, sequential controller can be controlled second motor and be promoted to high speed rotating, collides each other to avoid convergent-divergent lens barrel and focusing mirror group; The second, when the slope value of first motor and both rotating speeds of second motor is between first slope value and second slope value, then keep the rotating speed of first motor and second motor in the present interlock state; The 3rd; When the slope value of first motor and both rotating speeds of second motor during less than second slope value; Second motor rotary speed of representative driving focusing mirror group is too fast, and at this moment, sequential controller can be controlled second motor and temporarily stop; Treat that slope value that the first motor driven convergent-divergent lens barrel makes first motor and both rotating speeds of second motor when first slope value and second slope value, restarts second motor and make focusing mirror group proceed displacement.
On the other hand, first motor and the second motor driven convergent-divergent lens barrel and focusing mirror group are by being expanded to the process of taking in, and the method for sequential controller control is then opposite with above-mentioned Rule of judgment, does not repeat them here.
Below will disclose one embodiment of the invention, the camera lens interlock avoiding collision of the above-mentioned embodiment of the present invention will be described by this, have needed physical characteristics really.Should be appreciated that in following narration, the important document of having mentioned in the above-described embodiment will no longer repeat to give unnecessary details, and only just need further not define the person and replenish.
Table one is the displacement steps numerical table of one embodiment of the invention.This by the left side of table one to part on the right side do not list in the middle of the concrete meaning of each words representative: pos is the count steps of convergent-divergent lens barrel; + A is the control step number of convergent-divergent lens barrel; Inf-stopper is the halt of long-distance photograph mechanism; Inf-limit is the ultimate value of long-distance photograph mechanism start; Inf-position is the center step number in focusing mirror group start field; The suggestion curve is the mobile step number of programming focusing mirror group; Near-limit is the ultimate value of near-end camera mechanism start; Near-stopper is the halt of near-end camera mechanism.
Table one
Fig. 4 illustrates the slope graph of a relation of one embodiment of the invention.With convergent-divergent lens barrel step number scope in the table one by-876 steps to 110 steps, and focusing mirror group step number scope is example by-727 steps to 512 steps, can draw out slope graph of a relation as shown in Figure 4, then, further calculating its slope is 0.793.In this embodiment, focusing mirror group is with step motor driven, and the convergent-divergent lens barrel is to drive with d.c. motor, below with the mode and the difference thereof of both count steps of division.At first, the step number of focusing mirror group drives with the 1-2 phase mode of per step 9 degree, and so-called 1 step is that 1-2 drives a phase change mutually and is referred to as; This step motor step number feedback recognition is to see step number off as calculating with FW inside.On the other hand; The step number of convergent-divergent lens barrel is when driving with d.c. motor, drives the cover blade rotation, lets encoder to count PI hide the logical light time fast; Feedback detects use to the H/L waveform of Fast transforms as step number, the PI waveform with one-period just/negative edge triggers and calculates tired always calculation of 2 steps altogether.
Fig. 5 illustrates the transition diagram that concerns of convergent-divergent lens barrel among Fig. 4 and focusing mirror group.As shown in Figure 5; Convergent-divergent lens barrel (3G, 5G) is an interlinked mechanism; As long as drive d.c. motor; Convergent-divergent lens barrel (3G, 5G) can shine groove track interlock fixing on the camera lens, and focusing mirror group (4G) is to lean on other step motor to come drive controlling, so the control gear of convergent-divergent lens barrel and focusing mirror group is independently to separate; The mirror group of focusing again is clipped in the middle of the convergent-divergent lens barrel, when driving, need monitor convergent-divergent lens barrel and both speed of focusing mirror group at any time, to avoid focus mirror group (4G) and convergent-divergent lens barrel (3G, 5G) the situation generation of collision each other.In addition, in the process that drives focusing mirror group and convergent-divergent lens barrel, when focusing mirror group drives too fastly, or the convergent-divergent lens barrel drove when slow, and the situation of convergent-divergent lens barrel (3G, 5G) overtaking collision focusing mirror group (4G) all can take place; Otherwise when focusing mirror group drove slowly, or the convergent-divergent lens barrel drives when too fast the situation of the mirror group of then can focusing (4G) overtaking collision convergent-divergent lens barrel (3G, 5G).For these reasons, present embodiment needs constantly to calculate and monitoring convergent-divergent lens barrel and the slope of focusing mirror group in the driving process.
With the design load of Fig. 5 convergent-divergent lens barrel (3G, 5G), calculate driving curve and the reference slope of both interlock of focusing mirror group (4G) when driving, wherein, the relational expression of aforementioned interlock reference slope is following:
Then, after beginning to drive, in the process of start, bump, present embodiment is monitored with following relational expression in real time:
Below will specify present embodiment in the interlock process, keep the method that the interlock slope does not collide.Is that example is explained to drive the convergent-divergent lens barrel by being expanded to the process of taking in: work out the bound slope earlier 1.: present embodiment with reference slope+-10% as bound.2. the processing mode during greater than upper limit slope: this interval scale convergent-divergent lens barrel is slow, and the action of the mirror group that stops earlier focusing or strengthen the voltage that drives the convergent-divergent lens barrel and quicken takes place with the situation of the mirror group overtaking collision convergent-divergent lens barrel of avoiding focusing.3. the processing mode when being lower than the lower limit slope: this interval scale convergent-divergent lens barrel is very fast, can the driving voltage of group acceleration of focusing mirror or reduction convergent-divergent lens barrel be slowed down, and takes place with the situation of avoiding convergent-divergent lens barrel overtaking collision focusing mirror group.4. drive the convergent-divergent lens barrel by taking in to the process of launching: the situation and the status of its collision are opposite, therefore opposite processing of above-mentioned account form are got final product.
Wherein, The scope of
is the associated mechanisms position of receiving state to open state in the present embodiment; Because convergent-divergent lens barrel (3G, 5G) is shared drive source; And be driven in synchronism; Block between event 3G (inf-limit) and 5G (near-limit) is the mobilizable scope of focusing mirror group (4G), need and can not collide with convergent-divergent lens barrel (3G, 5G) in this interval start during focusing mirror group (4G) start.Because of the line segment of the non-simple and single slope of 4G (focusing mirror group) center, start field step number, thus adopt the single slope (as shown in Figure 4) of suggestion curve to do type of drive, in order to the control mode simplification and reach and preventing to collide effect.
Can know by above-mentioned embodiment; Use camera lens interlock collision avoidance system of the present invention and method thereof; Sequential controller guarantees that with the mode of slope interlock convergent-divergent lens barrel and focusing mirror group keep certain interval in the process of interlock, and sequential controller monitors the slope value of calculating first motor and both rotating speeds of second motor at any time, prevents that wherein arbitrary motor rotary speed is too fast or slow excessively; Thus, the situation that just can effectively avoid convergent-divergent lens barrel and focusing mirror group to collide each other takes place.
Though the present invention discloses as above with all embodiments; But it is not that those skilled in the art person is not breaking away from the spirit and scope of the present invention in order to qualification the present invention; When can doing various changes and retouching, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (10)
1. a camera lens interlock collision avoidance system is characterized in that, comprises:
Optical module comprises:
The convergent-divergent lens barrel; And
Focusing mirror group is positioned at this convergent-divergent lens barrel;
Driver module carries out displacement in order to drive this optical module, and this driver module comprises:
First motor carries out the axial stretching displacement in order to drive this convergent-divergent lens barrel; And
Second motor is in order to adjust this position of focusing mirror group in this convergent-divergent lens barrel; And
Sequential controller, in order to controlling this first motor and this second motor interlock each other, and the rotating speed of controlling this first motor is proportional to the rotating speed of this second motor, and this convergent-divergent lens barrel and this focusing mirror group can not collided in the interlock process each other.
2. camera lens interlock collision avoidance system as claimed in claim 1 is characterized in that, the rotating speed of the rotating speed of this first motor and this second motor proportional relation that is in line.
3. camera lens interlock collision avoidance system as claimed in claim 2 is characterized in that the slope of this straight line proportional relation is 0.793.
4. camera lens interlock collision avoidance system as claimed in claim 1 is characterized in that, the step number scope of this this convergent-divergent lens barrel of first motor driven is that-876 steps are to 110 steps.
5. camera lens interlock collision avoidance system as claimed in claim 1 is characterized in that, the step number scope that this second motor driven is somebody's turn to do focusing mirror group is that-727 steps are to 512 steps.
6. a camera lens interlock collision avoidance system is characterized in that, comprises:
Convergent-divergent lens barrel, focusing mirror group, first motor, second motor and sequential controller; This focusing mirror group is positioned at this convergent-divergent lens barrel; This first motor is connected with this convergent-divergent lens barrel; And drive this convergent-divergent lens barrel and carry out the axial stretching displacement, this second motor is connected with this focusing mirror group, and adjusts this position of focusing mirror group in this convergent-divergent lens barrel;
Wherein, this sequential controller is in order to controlling this first motor and this second motor interlock each other, and the rotating speed of controlling this first motor is proportional to the rotating speed of this second motor, and this convergent-divergent lens barrel and this focusing mirror group can not collided in the interlock process each other.
7. camera lens interlock collision avoidance system as claimed in claim 6 is characterized in that, the rotating speed of the rotating speed of this first motor and this second motor proportional relation that is in line.
8. camera lens interlock collision avoidance system as claimed in claim 7 is characterized in that the slope of this straight line proportional relation is 0.793.
9. a camera lens interlock avoiding collision is characterized in that, comprises:
Selected first motor carries out the axial stretching displacement to drive the convergent-divergent lens barrel;
Selected second motor is with the position of adjustment focusing mirror group in this convergent-divergent lens barrel;
When calculating this focusing mirror group of this convergent-divergent lens barrel overtaking collision, first slope value of this first motor and these both rotating speeds of second motor;
Calculate in the time of to focus this convergent-divergent lens barrel of mirror group overtaking collision second slope value of this first motor and these both rotating speeds of second motor; And
Utilize sequential controller to control this first motor and this second motor, the slope value that makes both rotating speeds is between this first slope value and this second slope value.
10. camera lens interlock avoiding collision as claimed in claim 9 is characterized in that, more comprises:
The step number scope of controlling this this convergent-divergent lens barrel of first motor driven goes on foot to 110 steps for-876; And the step number scope of controlling this focusing mirror group of this second motor driven for-727 steps to 512 steps, and then to make the slope of this first motor and these both rotating speeds of second motor be 0.793.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101681410A CN102841487A (en) | 2011-06-21 | 2011-06-21 | Lens continuous moving anti-collision device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101681410A CN102841487A (en) | 2011-06-21 | 2011-06-21 | Lens continuous moving anti-collision device and method |
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| CN104219453A (en) * | 2014-09-28 | 2014-12-17 | 青岛海信移动通信技术股份有限公司 | Lens controlling method and terminal of camera module |
| WO2021017399A1 (en) * | 2019-07-29 | 2021-02-04 | 广景视睿科技（深圳）有限公司 | Focusing device |
| CN114040072A (en) * | 2021-11-08 | 2022-02-11 | Oppo广东移动通信有限公司 | Camera mechanism, driving method thereof and electronic equipment |
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Application publication date: 20121226 |