Background technology
See also Fig. 1, a kind of two-shot device 20 comprisescircuit board 21 and is fixedly installed on twotight shot modules 23 on circuit board.Because the angular field of view θ of eachtight shot module 23 fixes, and the distance between twotight shot modules 23 is constant, therefore, the field depth of this kind two-shot device 20 is determined, and the numerical value of minimum depth of field D is usually larger, is unfavorable for scenery is nearby taken.
For the field depth that makes two-shot device 20 can be regulated, industry is used the focus-variable lens group usually in the camera lens module, angular field of view with transformation glass head mould group, yet, the eyeglass quantity of zoom lens group is more, and need to use the distance of frequent each eyeglass of conversion of governor motion, cause the manufacturing cost of two-shot device higher, and image quality is lower.
Summary of the invention
In view of above content, be necessary to provide the two-shot that a kind of manufacturing cost is lower and image quality is higher device.
A kind of two-shot device, it comprises main circuit board, be arranged at two camera lens modules on main circuit board, be arranged at controller on main circuit board, be arranged on main circuit board and the camera lens module leaning device that is connected with the camera lens module, the flexible PCB that is arranged at the position transducer on the camera lens module and is connected with main circuit board with this position transducer, controller is controlled the angle of inclination that this camera lens module leaning device is regulated this camera lens module, position transducer is responded to this angle of inclination information, and is passed to controller through this flexible PCB and main circuit board.
Above-mentioned two-shot device is controlled camera lens module leaning device by controller, angle of inclination to the camera lens module is adjusted, with the depth of field of regulating whole two-shot device to satisfy the object of taking different distance, therefore can directly adopt general tight shot module, and need not the zoom lens module that adopts manufacturing cost higher, and do not need the lens position in the camera lens module is regulated, so this kind two-shot device has lower manufacturing cost and better image quality.
Embodiment
Below in conjunction with drawings and Examples, case of electronic device of the present invention is described in further detail.
See also Fig. 2, the two-shot device 30 of first embodiment of the invention comprisesmain circuit board 31, be arranged oncontroller 32 onmain circuit board 31, be arranged at twocamera lens modules 33 onmain circuit board 31, be arranged at respectively twoposition transducers 34 on twocamera lens modules 33, be arranged onmain circuit board 31 and twoflexible PCBs 36 of two camera lensmodule leaning devices 35,link position sensor 34 andmain circuit boards 31 being connected with twocamera lens modules 33 respectively.In the present embodiment,position transducer 34 is Hall element.
These two camera lensmodule leaning devices 35 are symmetricly set in the both sides of main circuit board 31.Each camera lensmodule leaning device 35 comprises thebracing frame 351, the location-plate 352 that is connected withcamera lens module 33 that are arranged on main circuit board, be movably set in thefirst roller 353 on location-plate 352 and thesecond roller 354, winding first on thefirst roller 353regulate line 355, winding second on thesecond roller 354regulate line 356 and be connected inbracing frame 351 and location-plate 352 between elastic component 357.The first two ends ofregulating line 355 are individually fixed in the both sides of bracing frame 351.The second two ends of regulatingline 356 are individually fixed in the both sides of bracing frame 351.In the present embodiment, the first adjustingline 355 and second is regulatedline 356 and is made by marmem (SMA, Shape Memory Alloy).Therefore, when first regulateline 355 and second andregulate line 356 and be heated after, its length can be stretched, and can return to original length after cooling.Above-mentioned marmem can be Nitinol, silver-cadmium alloy, ormolu and signal bronze etc.Elastic component 357 is two, and it is arranged at respectively the two ends of location-plate 352, and is in compressive state and has a default elastic force, and in the present embodiment,elastic component 357 is spring.see also Fig. 3, when the depth of field of two-shot device 30 can't satisfy when object is nearby taken,controller 32 is controlled the heating member (not shown) according to the image that photographs the first adjustingline 355 is heated, after heating, first regulatesline 355 deliquescing, under the default elastic force effect near theelastic component 357 of thefirst roller 353, the first length of regulatingline 355 is stretched, because the first length ofregulating line 355 increases, and the second length of regulatingline 356 remains unchanged,camera lens module 33 is withrelative bracing frame 351 run-off the straights, thereby make the depth of field of two-shot device 30 change.Twocamera lens modules 33 in Fig. 3 are because the first length of regulatingline 355 increases, and all to the side run-off the straight near thefirst roller 353, the minimum depth of field H of two-shot thismoment device 30 will diminish, thereby are conducive to take object nearby.In the tilting procedure ofcamera lens module 33,position transducer 34 is passed tocontroller 32 with the real-time position information of itscamera lens module 33 of sensing byflexible PCB 36 andmain circuit board 31, whencamera lens module 33 tilts to the precalculated position,controller 32 is controlled the heating member stopped heating, and controlscamera lens module 33 and take corresponding near objects.After shooting was completed, because the first adjustingline 355 is cooling gradually, it can return to original length, andcamera lens module 33 also can be returned to original position.
Be appreciated that, the first adjustingline 355 and second is regulatedline 356 and also can be made by other metal materials such as copper,elastic component 357 also can omit, at this moment, first end of regulatingline 355 can be fixed to bracingframe 351, the other end is connected to a reel (not shown), and second end of regulatingline 356 is fixed to bracingframe 351, and the other end is connected to another reel.Control the rotation of two reels bycontroller 32,regulate line 355 and the second length of regulatingline 356 to regulate first, thus the depth of field of regulating two-shot device 30.
See also Fig. 4, the two-shot device 40 of second embodiment of the invention comprises main circuit board 41, be arranged on controller 42 on main circuit board 41, be arranged at two camera lens modules 43 on main circuit board 41, be arranged at respectively two position transducers 44 on two camera lens modules 43, be arranged on main circuit board 41 and two flexible PCBs 46 of two camera lens module leaning devices 45, link position sensor 44 and main circuit boards 41 being connected with two camera lens modules 43 respectively.
Camera lens module leaning device 45 comprises four actuators 451 that are arranged between two camera lens modules 43 and main circuit board 41, wherein two actuators 451 are arranged at respectively the two ends, bottom of a camera lens module 43, and two other actuator 451 is arranged at respectively the two ends, bottom of another camera lens module 43.In the present embodiment, actuator 451 is piezoelectric motors.Be appreciated that camera lens module leaning device 45 also can comprise the actuator 451 more than four.
When the depth of field of two-shot device 40 can't satisfy nearby or object at a distance when taking, the angle of inclination that controller 42 is controlled 451 pairs of camera lens modules 43 of actuator according to the image that photographs is regulated, thereby makes the depth of field of two-shot device 40 change.In the tilting procedure of camera lens module 43, position transducer 44 is passed to controller 42 with the real-time position information of its camera lens module 43 of sensing by flexible PCB 46 and main circuit board 41, when camera lens module 43 tilts to the precalculated position, controller 42 is controlled actuator 451 stop motions, and controls camera lens module 43 and take accordingly nearby or distant objects.After shooting was completed, controller 42 was controlled actuator 451 motions so that camera lens module 43 is returned to original position.
In addition, those skilled in the art also can do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included in the present invention's scope required for protection.