CN104932174A - Double-camera module - Google Patents
Double-camera module Download PDFInfo
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- CN104932174A CN104932174A CN201510357558.XA CN201510357558A CN104932174A CN 104932174 A CN104932174 A CN 104932174A CN 201510357558 A CN201510357558 A CN 201510357558A CN 104932174 A CN104932174 A CN 104932174A
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- carrier
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- circuit board
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Abstract
The invention relates to a double-camera module. The double-camera module comprises a circuit board, two image sensors, a base, a housing, a drive mechanism and two lens units. A first accommodating space, a second accommodating space cavity and a third accommodating space are formed in the housing; and the drive mechanism comprises a first carrier, a second carrier, a third carrier, an upper spring leaf, a lower spring leaf, a magnet and a coil. When the coil is electrified by the circuit board, the second carrier which is wound with the coil can move up and down along a direction of optical axis due to the fact that the coil is applied with Ampere force in magnetic fields generated in the magnet; the second carrier is connected with the first carrier and the third carrier by a connecting rod, and therefore, the second carrier can simultaneously drive the first carrier and the third carrier to move up and down, i.e., drive the lens units on the first carrier and the third carrier to move up and down. One drive mechanism is adopted to simultaneously drive the two lens units, and therefore, magnetic interference can be effectively reduced, and the image quality is improved.
Description
Technical field
The present invention relates to camera module technical field, particularly relate to a kind of dual camera module.
Background technology
At present, the electronic installations such as mobile phone, notebook computer, panel computer are rising and are adopting two camera module to take the new technology of same object simultaneously, the image taken respectively of two camera modules can compositing 3 d images, also can mutually compensate the two dimensional image obtaining high definition.
Traditional double camera module comprises two camera modules be independently installed on same circuit board.Each camera module comprise a lens unit, one carry voice coil motor, the circuit board for transmission of signal shared for the imageing sensor and two camera modules that gather taken image information of corresponding lens unit as driver.The critical piece of each voice coil motor is coil, magnet and shell fragment, in energising situation, generation current in coil, thus generate the magnetic field of some strength, under the magnetic field of magnet generation and the combined action of coil current Induced magnetic field, hot-wire coil is by Ampère force, the direction of power is along optical axis direction, thus the distance changed between camera lens and imageing sensor, and then realize focusing function, shooting image.
But when adopting the dual camera module of said structure, the voice coil motor in two camera modules can produce magnetic interference mutually, reduce image taking quality.
Summary of the invention
Based on this, be necessary for the problems referred to above, a kind of dual camera module effectively can avoiding producing magnetic interference is provided.
A kind of dual camera module, comprising:
One circuit board, comprises an installed surface;
Two image sensor, spaced apart on described installed surface, and be electrically connected with described circuit board;
One base is hollow form, is arranged on described installed surface, and two described image sensor are contained in described base;
One housing, for hollow form and the structure of both ends open, be arranged on described base bottom it, the first accommodation space spaced apart, the second accommodation space and the 3rd accommodation space is formed in described housing, described first accommodation space and described 3rd accommodation space lay respectively at described second accommodation space both sides, and described first accommodation space and described 3rd accommodation space run through the top of described housing;
One driving mechanism, comprise the first carrier, Second support, 3rd carrier, upper shell fragment, lower shell fragment, magnet and coil, described first carrier is contained in described first accommodation space, described Second support is contained in described second accommodation space, described 3rd carrier is contained in described 3rd accommodation space, described first carrier and described Second support, described 3rd carrier is connected by connecting rod with described Second support, described Second support is cylindric, the upper surface of described Second support and lower surface are fastened on described upper shell fragment and described lower shell fragment respectively, described coil is set around the outer rim of described Second support, and described coil is electrically connected with described circuit board, described magnet is arranged on described housing, be contained in described second accommodation space, described magnet is with described coil spacing relative around described coil, and
Two lens units, are arranged on described first carrier and described 3rd carrier respectively.
Wherein in an embodiment, each lens unit comprises lens unit and lens barrel, and described lens unit is arranged in described lens barrel, and two described lens barrels are arranged on described first carrier and described 3rd carrier respectively.
Wherein in an embodiment, described first carrier and described 3rd carrier are provided with internal thread, described lens barrel is provided with external thread, described lens barrel is matched with described external thread by described internal thread with described first carrier and described 3rd carrier.
Wherein in an embodiment, described first carrier, Second support, the 3rd carrier and the one-body molded setting of connecting rod.
Wherein in an embodiment, also comprise optical filter, described optical filter to be arranged on described base and between described lens unit and described image sensor.
Wherein in an embodiment, the madial wall of described base caves in fluted, described optical filter is inserted in described groove;
Or the madial wall of described base is outstanding is formed with projection, and described optical filter is arranged in described projection.
Wherein in an embodiment, described circuit board is flexible PCB, is also provided with stiffening plate, and described stiffening plate is arranged at described flexible PCB and the opposing surface of described installed surface;
Or described circuit board is hard circuit board.
Wherein in an embodiment, described upper shell fragment offers the first through hole, described lower shell fragment offers the second through hole, the two ends of described Second support are fastened in described first through hole and in described second through hole respectively.
Wherein in an embodiment, the quantity of magnet is four, and four described magnets are uniformly distributed in four corners of described second accommodation space.
Wherein in an embodiment, also comprise connector, described connector is arranged at the elongated end of described circuit board.
Above-mentioned dual camera module at least has the following advantages:
When coil is energized by circuit board, because coil is subject to Ampère force effect in the magnetic field that magnet produces, make the Second support being wound with coil can along optical axis direction up/down movement, because Second support is connected with the first carrier, the 3rd carrier by connecting rod, therefore can drive the first carrier and the 3rd carrier up/down movement by Second support simultaneously, thus drive the lens unit up/down movement be arranged on the first carrier and the 3rd carrier, change the distance between lens unit and image sensor, realize focus function.Drive two lens units owing to have employed a driving mechanism simultaneously, therefore effectively can reduce magnetic interference, improve image quality.And two lens units move with the motion of Second support simultaneously, solve two lens units and to move inconsistent problem, improve picture precision.
Accompanying drawing explanation
Fig. 1 is the vertical view of the dual camera module in an embodiment;
Fig. 2 is the cut-open view of the module of dual camera shown in Fig. 1.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar improvement when intension of the present invention, therefore the present invention is by the restriction of following public concrete enforcement.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement just for illustrative purposes, do not represent it is unique embodiment.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
See also Fig. 1 and Fig. 2, be the dual camera module 10 in an embodiment, this dual camera module 10 can be applied to such as digital camera, digitized video register, mobile phone, intelligent mobile phone, monitor and other have in the electronic product of camera function.This dual camera module 10 comprises a circuit board 100, two image sensor 200, base 300, housing 400, driving mechanism 500, two lens unit 600, optical filters 700 and connector (not shown).
Circuit board 100 comprises an installed surface 110.Particularly, circuit board 100 can be flexible PCB or hard circuit board.When flexible PCB selected by circuit board 100, can also arrange with stiffening plate, stiffening plate is arranged at flexible PCB and the opposing surface of installed surface 110, for playing smooth and booster action to flexible PCB.
Two image sensor 200 are spaced apart on installed surface 110, and are electrically connected with circuit board 100.Particularly, image sensor 200 can adopt complementary metal oxide semiconductor (CMOS) (CMOS, ComplementaryMetal Oxide Semiconductor) image sensor or charge coupled cell (CCD, Charge-coupledDevice) image sensor.
Base 300 is hollow form, and the bottom of base 300 is arranged on installed surface 110, and two image sensor 200 are contained in base 300.
Housing 400 is the structure of hollow form and both ends open, is arranged on base 300 bottom it.Be formed with the first accommodation space 410, second accommodation space 420 spaced apart and the 3rd accommodation space 430, first accommodation space 410 and the 3rd accommodation space 430 in housing 400 and lay respectively at the second accommodation space 420 both sides.First accommodation space 410, second accommodation space 420 and the 3rd accommodation space 430 can be roughly rectangle.First accommodation space 410 and the 3rd accommodation space 430 run through the top of housing 400.In other words, the part that the top of housing 400 corresponds to the first accommodation space 410 and the 3rd accommodation space 430 offers through hole, through hole be communicated with the first accommodation space 410 with outside, is communicated with the 3rd accommodation space 430 and outside.This through hole can be circular, with the mating shapes with lens unit 600.
Driving mechanism 500 comprises the first carrier 510, Second support 520, the 3rd carrier 530, upper shell fragment 540, lower shell fragment 550, magnet 560 and coil 570.First carrier 510 is contained in the first accommodation space 410, and Second support 520 is contained in the second accommodation space 420, and the 3rd carrier 530 is contained in the 3rd accommodation space 430.First carrier 510 is connected by connecting rod 580 with Second support 520 with Second support 520, the 3rd carrier 530, therefore the first carrier 510 and the 3rd carrier 530 can move with the motion of Second support 520 simultaneously, particularly, described first carrier 510, Second support 520, the 3rd carrier 530 and connecting rod 580 are one-body molded.
First carrier 510, Second support 520 and the 3rd carrier 530 are roughly cylindric.Second support 520 can be solid right cylinder, and the first carrier 510 and the 3rd carrier 530 are the right cylinder of hollow, offer the through hole running through its end face and bottom surface.The upper surface of Second support 520 and lower surface are fastened on shell fragment 540 and lower shell fragment 550 respectively.Particularly, can also arrange upper mounting plate and lower installation board respectively at the upper surface of Second support 520 and lower surface, upper shell fragment 540 is arranged on upper mounting plate, and lower shell fragment 550 is arranged on lower installation board.
Particularly, upper shell fragment 540 offers the first through hole (not shown), the sidewall of the first through hole forms elastic arm, and elastic arm (not shown) has certain elastic performance.Lower shell fragment 550 offers the second through hole (not shown), particularly, lower shell fragment 550 is formed by the two parts be separated, and two parts of separation surround the rectangular configuration that inside has the second through hole.The sidewall of the second through hole forms elastic arm (not shown), and elastic arm has certain elastic performance.The two ends of Second support 520 are fastened in respectively with in the second through hole in the first through hole, and therefore, Second support 520 flexibly can move up and down between upper shell fragment 540 and lower shell fragment 550.
Coil 570 is set around the outer rim of Second support 520, and coil 570 is electrically connected with circuit board 100.Particularly, two parts that the two ends of coil 570 are separated with lower shell fragment 550 respectively connect, and lower shell fragment 550 is connected with circuit board 100 again, are so powered by circuit board 100 pairs of coils 570.
Magnet 560 is arranged on housing 400, be contained in the second accommodation space 420, relative with coil 570 interval around coil 570.The quantity of magnet 560 is four, and four magnets 560 are uniformly distributed in four corners of the second accommodation space 420.Each magnet 560 is all relative with coil 570 interval, and when coil 570 is energized, coil 570 is subject to the effect of Ampère force in the magnetic field that magnet 560 produces.
Two lens units 600 are arranged on the first carrier 510 and the 3rd carrier 530 respectively.Particularly, each lens unit 600 comprises lens unit and lens barrel, and lens unit comprises multi-disc eyeglass, and lens unit is arranged in lens barrel.Two lens barrels are arranged on the first carrier 510 and the 3rd carrier 530 respectively.
Such as, can arrange internal thread on the first carrier 510 and the 3rd carrier 530, lens barrel arranges external thread, lens barrel is matched with external thread by internal thread with the first carrier 510 and the 3rd carrier 530.Certainly, in other embodiments, lens barrel can also be matched by alternate manner with the first carrier 510 and the 3rd carrier 530, moves with the motion of the first carrier 510 and the 3rd carrier 530 as long as reach lens barrel.
Optical filter 700 to be arranged on base 300 and between lens unit 600 and image sensor 200.Particularly, optical filter 700 can be cutoff filter 700.Specific in present embodiment, the madial wall of base 300 is outstanding is formed with projection, and optical filter 700 is arranged in projection.Certainly, in other embodiments, can also be recessed to form groove on the madial wall of base 300, optical filter 700 is inserted in groove.
Connector (not shown) is arranged at the elongated end of circuit board 100, and connector is used for being electrically connected with external element, for the information of transmitting image sensor 200.
Above-mentioned dual camera module 10 at least has the following advantages:
When coil 570 is energized by circuit board 100, because coil 570 is subject to Ampère force effect in the magnetic field that magnet 560 produces, make the Second support 520 being wound with coil 570 can along optical axis direction up/down movement, because Second support 520 is by connecting rod 580 and the first carrier 510, 3rd carrier 530 is connected by connecting rod 580 successively, therefore can drive the first carrier 510 and the 3rd carrier 530 up/down movement by Second support 520 simultaneously, thus drive lens unit 600 up/down movement be arranged on the first carrier 510 and the 3rd carrier 530, change the distance between lens unit 600 and image sensor 200, realize focus function.Drive two lens units 600 owing to have employed a driving mechanism 500 simultaneously, therefore effectively can reduce magnetic interference, improve image quality.And two lens units 600 move with the motion of Second support 520 simultaneously, solve two lens units 600 and to move inconsistent problem, improve picture precision.When coil 570 stops energising, Second support 520 returns to initial position under the elastic force effect of the elastic arm of upper shell fragment 540 and lower shell fragment 550.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a dual camera module, is characterized in that, comprising:
One circuit board, comprises an installed surface;
Two image sensor, spaced apart on described installed surface, and be electrically connected with described circuit board;
One base is hollow form, is arranged on described installed surface, and two described image sensor are contained in described base;
One housing, for hollow form and the structure of both ends open, be arranged on described base bottom it, the first accommodation space spaced apart, the second accommodation space and the 3rd accommodation space is formed in described housing, described first accommodation space and described 3rd accommodation space lay respectively at described second accommodation space both sides, and described first accommodation space and described 3rd accommodation space run through the top of described housing;
One driving mechanism, comprise the first carrier, Second support, 3rd carrier, upper shell fragment, lower shell fragment, magnet and coil, described first carrier is contained in described first accommodation space, described Second support is contained in described second accommodation space, described 3rd carrier is contained in described 3rd accommodation space, described first carrier and described Second support, described 3rd carrier is connected by connecting rod with described Second support, described Second support is cylindric, the upper surface of described Second support and lower surface are fastened on described upper shell fragment and described lower shell fragment respectively, described coil is set around the outer rim of described Second support, and described coil is electrically connected with described circuit board, described magnet is arranged on described housing, and be contained in described second accommodation space, described magnet is with described coil spacing relative around described coil, and
Two lens units, are arranged on described first carrier and described 3rd carrier respectively.
2. dual camera module according to claim 1, is characterized in that, each lens unit comprises lens unit and lens barrel, and described lens unit is arranged in described lens barrel, and two described lens barrels are arranged on described first carrier and described 3rd carrier respectively.
3. dual camera module according to claim 2, it is characterized in that, described first carrier and described 3rd carrier are provided with internal thread, described lens barrel is provided with external thread, described lens barrel is matched with described external thread by described internal thread with described first carrier and described 3rd carrier.
4. dual camera module according to claim 2, is characterized in that, described first carrier, Second support, the 3rd carrier and the one-body molded setting of connecting rod.
5. dual camera module according to claim 1, is characterized in that, also comprise optical filter, and described optical filter to be arranged on described base and between described lens unit and described image sensor.
6. dual camera module according to claim 5, is characterized in that, the madial wall of described base caves in fluted, and described optical filter is inserted in described groove;
Or the madial wall of described base is outstanding is formed with projection, and described optical filter is arranged in described projection.
7. dual camera module according to claim 1, is characterized in that, described circuit board is flexible PCB, is also provided with stiffening plate, and described stiffening plate is arranged at described flexible PCB and the opposing surface of described installed surface;
Or described circuit board is hard circuit board.
8. dual camera module according to claim 1, is characterized in that, described upper shell fragment offers the first through hole, and described lower shell fragment offers the second through hole, and the two ends of described Second support are fastened in described first through hole and in described second through hole respectively.
9. dual camera module according to claim 1, is characterized in that, the quantity of magnet is four, and four described magnets are uniformly distributed in four corners of described second accommodation space.
10. dual camera module according to claim 1, is characterized in that, also comprise connector, and described connector is arranged at the elongated end of described circuit board.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510357558.XA CN104932174B (en) | 2015-06-25 | 2015-06-25 | Dual camera module |
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| CN201510357558.XA CN104932174B (en) | 2015-06-25 | 2015-06-25 | Dual camera module |
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| CN104932174A true CN104932174A (en) | 2015-09-23 |
| CN104932174B CN104932174B (en) | 2018-03-16 |
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