CN105573014A - Camera module with focusing and anti-shaking functions - Google Patents
Camera module with focusing and anti-shaking functions Download PDFInfo
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- CN105573014A CN105573014A CN201610044501.9A CN201610044501A CN105573014A CN 105573014 A CN105573014 A CN 105573014A CN 201610044501 A CN201610044501 A CN 201610044501A CN 105573014 A CN105573014 A CN 105573014A
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- circuit board
- focusing
- lens module
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- guide member
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- 230000003287 optical effect Effects 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 206010044565 Tremor Diseases 0.000 claims description 27
- 239000012634 fragment Substances 0.000 claims description 20
- 230000006641 stabilisation Effects 0.000 claims description 12
- 238000011105 stabilization Methods 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004304 visual acuity Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
Abstract
The invention relates to a camera module with focusing and anti-shaking functions. The camera module comprises a support shell, a first circuit board, an automatic focusing lens module and an anti-shaking mechanism; during shooting under the condition without shaking, the automatic focusing lens module is used for automatically focusing and shooting a shot object after electrification; during shooting under the condition that shaking is generated, a first guiding piece is positioned on the first circuit board, a second guiding piece is positioned at the bottom of the automatic focusing lens module, and a first connecting piece is used for connecting the first guiding piece with the second guiding piece, so that the first driving piece can drive the whole automatic focusing lens module to move along the plane vertical to the optical axis of the automatic focusing lens module relative to the first circuit board, and shaking compensation is generated to guarantee shooting quality. According to the camera module with the focusing and anti-shaking functions, a supporting wire structure is not used when the focusing and anti-shaking functions are realized, so that special materials do not need to be used, the structure is simple, and the cost is reduced.
Description
Technical field
The present invention relates to camera module technical field, particularly relate to a kind of camera module with focusing and anti-trembling function.
Background technology
Along with the development and progression of technology, the minisize pick-up head module with focusing and anti-trembling function is widely used in, on the electronic product such as mobile phone, PAD, making it have and taking pictures and camera function.The camera module that tradition has focusing and anti-trembling function adopts suspention line structure usually, and when adopting this kind of structure, its anti-shake apparatus is usually located at below focusing mechanism, and connects by having flexible four suspention lines.
Do not having in the shooting situation of shaking, focusing mechanism drives camera lens module to move along its optical axis direction with shooting clear image.When there is shake, camera lens may along X-direction or Y direction minute movement, and during jitter compensation, anti-shake apparatus drives focusing mechanism to move along X-direction or Y direction with compensate for jitter amount.And amount of jitter is detected by the gyroscope be arranged on electronic product or camera module.In addition, anti-shake apparatus is also provided with hall sensor, and for detecting magnetic variable quantity and feed back to controller in jitter compensation process, controller controls the electric current of stabilization coil finally to reach predetermined backoff amount of movement according to magnetic variable quantity.
But the above-mentioned camera module not only complex structure with focusing and anti-trembling function, and suspention line generally adopts special material, and cost is high.
Summary of the invention
Based on this, be necessary for above-mentioned technical matters, a kind of camera module with focusing and anti-trembling function not adopting suspention line structure also can realize focusing and anti-trembling function is provided.
There is a camera module for focusing and anti-trembling function, comprising:
Rack shell, has an openend, and one end relative with described openend offers light hole;
First circuit board, is arranged at described openend, and described rack shell and described first circuit board surround a receiving space jointly;
Autofocus lens module, is contained in described receiving space, and described autofocus lens module is electrically connected with described first circuit board; And
Stabilization mechanism, comprise the first web member, the first actuator, the first guide member and the second guide member, described first guide member is positioned on described first circuit board, described second guide member is positioned at the bottom of described autofocus lens module, described first web member connects described first guide member and described second guide member, and described first actuator is for driving described autofocus lens module relative to described first circuit board along the planar movement perpendicular to the optical axis of described autofocus lens module.
Wherein in an embodiment, described first guide member comprises and is opened on described first circuit board at least three not the first circular guideways on the same line, described second guide member comprises at least three of the bottom being opened in described autofocus lens module not the second circular guideways on the same line, and described first web member comprises the first ball be arranged between described first circular guideway and described second circular guideway.
Wherein in an embodiment, the diameter of described first circular guideway equals the diameter of described second circular guideway, the diameter of described first ball is less than the diameter of described first circular guideway, and the diameter of described first ball is greater than the degree of depth of described first circular guideway of twice.
Wherein in an embodiment, described first actuator comprises the first coil, the second coil, the first magnetic and the second magnetic;
The bottom of described autofocus lens module is located at by described first coil, described first magnetic to be located on described first circuit board and to be oppositely arranged with described first coil, and described first coil produces magnetic field by energising and acts on mutually with described first magnetic thus drive described autofocus lens module to move along the first direction in described plane;
The bottom of described autofocus lens module is located at by described second coil, described second magnetic to be located on described first line plate and relative with described second coil, and described second coil produces magnetic field by energising and acts on mutually with described second magnetic thus drive described autofocus lens module to move along the second direction in described plane; Wherein, described first direction is perpendicular to described second direction.
Wherein in an embodiment, described stabilization mechanism also comprises the second web member, the 3rd guide member and the 4th guide member, described 3rd guide member is arranged at the inside surface of the roof described rack shell offering light hole, described 4th guide member is arranged at the top of described autofocus lens module, and described second web member connects described 3rd guide member and described 4th guide member.
Wherein in an embodiment, described 3rd guide member comprises at least three of the inside surface being opened in the roof described rack shell offering light hole not the 3rd circular guideways on the same line;
Described 4th guide member comprise the top that is opened in described autofocus lens module and with corresponding at least three of arranging of described 3rd circular guideway not the 4th circular guideway on the same line;
Described second web member comprises multiple second balls be located between described multiple 3rd circular guideway and described multiple 4th circular guideway.
Wherein in an embodiment, the diameter of described 3rd circular guideway equals the diameter of described 4th circular guideway, the diameter of described second ball is less than the diameter of described 3rd circular guideway, and the diameter of described second ball is greater than the degree of depth of described 3rd circular guideway of twice.
Wherein in an embodiment, described stabilization mechanism also comprises the first detecting element, the second detecting element and controller;
Described first detecting element is for detecting the first magnetic variable quantity of described first coil and feeding back to described controller, and the electric current that described controller controls described first coil according to described first magnetic variable quantity moves along described first direction to make described carrier;
Described second detecting element is for detecting the second magnetic variable quantity of described second coil and feeding back to described controller, and the electric current that described controller controls described second coil according to described second magnetic variable quantity moves along described second direction to make described carrier.
Wherein in an embodiment, described autofocus lens module comprises second circuit board, base, image sensor, optical filter, camera lens module, carrier, focusing coil, focusing magnet, upper shell fragment, lower shell fragment and voice coil motor, described second circuit board is electrically connected with described first circuit board, described second guide member is positioned at the bottom of described second circuit board, the bottom of described base is arranged on described second circuit board, described image sensor is arranged on described second circuit board, and be positioned at the inside of described base, described optical filter to be arranged on described base and to be positioned at above described image sensor, described carrier is hollow cylindrical configuration, described camera lens module is arranged in described carrier, described focusing coil winding is in the outer peripheral edges of described carrier, described focusing coil is electrically connected with described second circuit board, described focusing magnet to be contained in described voice coil motor and to be oppositely arranged with described focusing coil, one end of described carrier is arranged on described upper shell fragment, the other end of described carrier is arranged on described lower shell fragment, described camera lens module, carrier, focusing coil, upper shell fragment and lower shell fragment are contained in described voice coil motor.
Wherein in an embodiment, described second circuit board is Rigid Flex, and comprise PCB substrate and FPC wiring board, described PCB substrate is arranged at the bottom of described base, and described FPC wiring board is electrically connected with described first circuit board.
The above-mentioned camera module with focusing and anti-trembling function at least has following functions:
Start anti-trembling function, when taking when not shaking, autofocus lens module is automatic after being energized to carry out auto-focusing to shot object and takes; When taking when producing shake, because the first guide member is positioned on first circuit board, second guide member is positioned at the bottom of autofocus lens module, first web member connects the first guide member and the second guide member, so the first actuator can drive whole autofocus lens module to produce mobile relative to first circuit board along the plane perpendicular to the optical axis of autofocus lens module, produce jitter compensation, to ensure shooting quality.The above-mentioned camera module with focusing and anti-trembling function does not adopt suspention line structure when realizing focusing and anti-trembling function, and therefore without the need to adopting special material, structure is simple, has saved cost.And when producing jitter compensation, whole autofocus lens module, all relative to the planar movement perpendicular to optical axis, ensure that image sensor and camera lens module are all the time on same optical axis, avoid the problem that surrounding resolving power declines.
Accompanying drawing explanation
Fig. 1 is the cut-open view of the camera module in an embodiment with focusing and anti-trembling function;
Fig. 2 is the structural representation of Fig. 1 medium-height trestle shell;
Fig. 3 is the partial exploded view of autofocus lens module in Fig. 1;
Fig. 4 is the structural representation of first line plate in Fig. 1;
Fig. 5 is the structural representation of the second wiring board 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.
Refer to Fig. 1, be the camera module 10 with focusing and anti-trembling function in an embodiment, can be applied to, in the such as electronic product such as mobile phone, PAD, electronic product be had and takes pictures and camera function.Specific in present embodiment, the camera module 10 with focusing and anti-trembling function comprises rack shell 100, first circuit board 200, autofocus lens module 300 and stabilization mechanism 400.
Particularly, for convenience of description, the optical axis direction of definition autofocus lens module 300 is the Z axis in three-dimensional system of coordinate, and the first direction perpendicular to optical axis is the X-axis in three-dimensional system of coordinate, perpendicular to the Y-axis in the second direction three-dimensional system of coordinate of optical axis and first direction.
See also Fig. 2, rack shell 100 has an openend 100a, and one end relative with openend 100a offers light hole 100b.Extraneous light is entered in rack shell 100 by light hole 100b.Particularly, rack shell 100 is the rectangular-shaped of hollow, and openend 100a is square aperture, and light hole 100b is circular.
First circuit board 200 is arranged at openend 100a, and rack shell 100 and first circuit board 200 surround a receiving space 200a jointly.Particularly, first circuit board 200 can be PCB, can be electrically connected with external element.
See also Fig. 3, autofocus lens module 300 is contained in receiving space 200a, and autofocus lens module 300 is electrically connected with first circuit board 200.Specific in present embodiment, autofocus lens module 300 comprises second circuit board 310, base 320, image sensor 330, optical filter 340, camera lens module 350, carrier 360, focusing coil 370, focusing magnet 381, upper shell fragment 382, lower shell fragment 383 and voice coil motor 390.
Please again consult Fig. 1, second circuit board 310 is electrically connected with first circuit board 200.Specific in present embodiment, second circuit board 310 is Rigid Flex, and comprise PCB substrate 311 and FPC wiring board 312, PCB substrate 311 is arranged at the bottom of base 320, is electrically connected with first circuit board 200 by FPC wiring board 312.Certainly, in other embodiments, second circuit board 310 can be also hard circuit board, is then electrically connected with first circuit board 200 by wire.
The bottom of base 320 is arranged on second circuit board 310, and image sensor 330 is arranged on second circuit board 310, and is positioned at the inside of base 320, and image sensor 330 is electrically connected with second circuit board 310.Optical filter 340 to be arranged on base 320 and to be positioned at above image sensor 330, carrier 360 is hollow cylindrical configuration, camera lens module 350 is arranged in carrier 360, particularly, camera lens module 350 can threadedly be arranged in carrier 360, and extraneous light arrives image sensor 330 after mating plate 340 more after filtration by camera lens module 350.
Focusing coil 370 is wound in the outer peripheral edges of carrier 360, and focusing coil 370 is electrically connected with second circuit board 310.Particularly, coil 370 of focusing is that a wire is wound.Focusing magnet 381 to be contained in voice coil motor 390 and to be oppositely arranged with focusing coil 370, and the quantity of focusing magnet 381 is four, and four focusing magnets 381 lay respectively at four corners of carrier 360.One end of carrier 360 is arranged on shell fragment 382, and the other end of carrier 360 is arranged on lower shell fragment 383, and camera lens module 350, carrier 360, focusing coil 370, upper shell fragment 382 and lower shell fragment 383 are contained in voice coil motor 390.
During focusing, focusing coil 370 is powered by second circuit board 310, and the magnetic field that focusing coil 370 produces and the focusing magnet 381 phase effect in voice coil motor 390, drive carrier 360 to move up and down, and then drive camera lens module 350 to move back and forth along its optical axis direction, realize focus function.When stopping powering to focusing coil 370, carrier 360 is sprung back to initial position with lower shell fragment 383 by upper shell fragment 382.
Stabilization mechanism 400 comprises the first web member, the first actuator, the first guide member and the second guide member.First guide member is positioned on first circuit board 200, second guide member is positioned at the bottom of autofocus lens module 300, first web member connects the first guide member and the second guide member, and the first actuator is for driving autofocus lens module 300 relative to the planar movement of first circuit board 200 along the optical axis perpendicular to autofocus lens module 300.Therefore, stabilization mechanism 400 can drive autofocus lens module 300 to move, and therefore can compensate the displacement that autofocus lens module 300 produces because of shake, thus ensures shooting quality.
See also Fig. 4 and Fig. 5, particularly, first guide member comprises and is opened on first circuit board 200 at least three not the first circular guideways 410 on the same line, second guide member comprise at least three of the bottom being opened in autofocus lens module 300 not the second circular guideway 420, first web member on the same line comprise the first ball 430 be arranged between the first circular guideway 410 and the second circular guideway 420.
Such as, in the present embodiment, first circuit board 200 is square.The quantity of the first circular guideway 410 is four, and four the first circular guideways 410 are opened in four corners of first circuit board 200 respectively, and are positioned at the one side that first circuit board 200 is intended for second circuit board 310.Second circular guideway 420 is opened on the second circuit board 310 of autofocus lens module 300, and is positioned at the one side that second circuit board 310 is intended for first circuit board 200, and second circuit board 310 is square.The quantity of the second circular guideway 420 is four, and four the second circular guideways 420 lay respectively at four corners of first circuit board 200.First circular guideway 410 and the second circular guideway 420 can be all circular groove.
Accordingly, the quantity of the first ball 430 is also four, and each first ball 430 lays respectively between one first circular guideway 410 and one second circular guideway 420.The diameter of the first circular guideway 410 equals the diameter of the second circular guideway 420, and the diameter of the first ball 430 is less than the diameter of the first circular guideway 410, and the diameter of the first ball 430 is greater than the degree of depth of the first circular guideway 410 of twice.Particularly, the first ball 430 can be ceramic balls.First ball 430 can roll between the first circular guideway 410 and the second circular guideway 420, and the first ball 430 can play the effect supporting whole autofocus lens module 300.
First circular guideway 410, second circular guideway 420 and the first ball 430 can realize guiding autofocus lens module 300 along the planar movement perpendicular to optical axis to compensate the displacement produced because of shake, and structure is simple, and cost is lower.In addition, due to when realizing jitter compensation, whole autofocus lens module 300 produces movement all together, and therefore, camera lens module and image sensor 330 remain on same optical axis, therefore can avoid the problem that surrounding resolving power declines.
Refer to Fig. 1, the first actuator comprises the first coil 441, second coil 442, first magnetic (not shown) and the second magnetic 444.The bottom of autofocus lens module 300 is located at by first coil 441, particularly, sees also Fig. 5, and the first coil 441 is arranged at the bottom of second circuit board 310.
The quantity of the first coil 441 and the first magnetic (not shown) is two, second circuit board 310 is square shape, offer two the first accepting grooves by the one side being intended for first circuit board 200 at second circuit board 310, two the first coils 441 are arranged in the first accepting groove respectively.Two the first accepting grooves are positioned at the relative side of two of second circuit board 310.First coil 441 is electrically connected with second circuit board 310, and second circuit board 310 is that the first coil 441 is powered.Offer the first accepting groove, the first coil 441 is contained in the first accepting groove, can reduce the height of whole camera module 10.
Refer to Fig. 1, first magnetic to be located on first circuit board 200 and to be oppositely arranged with the first coil 441, particularly, first circuit board 200 offers two the second accepting grooves back on the one side of second circuit board 310, accommodate one first magnetic in each second accepting groove respectively, two the second accepting grooves lay respectively on the relative side of first circuit board 200 two.First coil 441 produces magnetic field by energising and acts on mutually with the first magnetic thus drive autofocus lens module 300 mobile along the first direction (X-direction as in Fig. 4) in plane.First magnetic can be magnet.
The bottom of autofocus lens module 300 is located at by second coil 442, particularly, sees also Fig. 5, and the second coil 442 is arranged at the bottom of second circuit board 310.The quantity of the second coil 442 and the second magnetic 444 is two.Second circuit board 310 is square shape, offers two the 3rd accepting grooves by the one side being intended for first circuit board 200 at second circuit board 310, is arranged at respectively in the 3rd accepting groove by two the second coils 442.Two the 3rd accepting grooves are positioned at the relative side of two articles of second circuit board 310, and adjacent with the first accepting groove.Second coil 442 is electrically connected with second circuit board 310, and second circuit board 310 is that the second coil 442 is powered.
Refer to Fig. 1, second magnetic 444 to be located on first circuit board 200 and to be oppositely arranged with the second coil 442, particularly, first circuit board 200 offers two the 4th accepting grooves back on the one side of second circuit board 310, one second magnetic 444 is accommodated respectively in each 4th accepting groove, two the 4th accepting grooves lay respectively on the relative side of first circuit board 200 two articles, and adjacent with the second accepting groove.Second coil 442 produces magnetic field by energising and drives autofocus lens module 300 along second direction (Y direction as in Fig. 4) movement in plane with the second magnetic 444 phase effect, and wherein first direction is perpendicular to second direction.Second magnetic 444 can be magnet.
Whole autofocus lens module 300 is driven relative to first circuit board 200 moving perpendicular in the plane of optical axis direction by the first coil 441, second coil 442, first magnetic and the second magnetic 444.
Specific in present embodiment, stabilization mechanism 400 also comprises the second web member, the 3rd guide member and the 4th guide member.3rd guide member is arranged at the inside surface of roof rack shell 100 offering light hole 100b, and the 4th guide member is arranged at the top of autofocus lens module 300, and the second web member connects the 3rd guide member and the 4th guide member.
Particularly, 3rd guide member comprises at least three of the inside surface being opened in roof rack shell 100 offering light hole 100b not the 3rd circular guideway (not shown) on the same line, 4th guide member comprise the top that is opened in autofocus lens module 300 and with corresponding at least three of arranging of the 3rd circular guideway not the 4th circular guideway 450, second web member on the same line comprise multiple second balls 460 be located between multiple 3rd circular guideway and multiple 4th circular guideway 450.
Such as, see also Fig. 1 and Fig. 3, in the present embodiment, rack shell 100 is that hollow is rectangular-shaped.The quantity of the 3rd circular guideway is four, and four the 3rd circular guideways are opened in four corners of the inside surface of roof rack shell 100 offering light hole 100b respectively.The quantity of the 4th circular guideway 450 is four, and four the 4th circular guideways 450 lay respectively at four corners at the top of the voice coil motor 390 of autofocus lens module 300.3rd circular guideway and the 4th circular guideway 450 can be all circular groove.
Accordingly, the quantity of the second ball 460 is also four, and each second ball 460 lays respectively between one the 3rd circular guideway and one the 4th circular guideway 450.The diameter of the 4th circular guideway 450 equals the diameter of the 3rd circular guideway, and the diameter of the second ball 460 is less than the diameter of the 3rd circular guideway, and the diameter of the second ball 460 is greater than the degree of depth of the 3rd circular guideway of two.Particularly, the second ball 460 can be ceramic balls.
Second web member, the 3rd guiding piece and the 4th guiding piece and the first web member, the first guide member and the second guide member limit the plane of autofocus lens module 300 relative to first circuit board 200 movement jointly, and autofocus lens module 300 can be moved more reposefully.
Specific in present embodiment, stabilization mechanism 400 also comprises the first detecting element 471, second detecting element 472 and controller (not shown).First detecting element 471 is for detecting the first magnetic variable quantity of the first coil 441 and feeding back to controller, and controller controls the electric current of the first coil 441 to make carrier 360 mobile along first direction (X-direction) according to the first magnetic variable quantity.Second detecting element 472 is for detecting the second magnetic variable quantity of the second coil 442 and feeding back to controller, and controller controls the electric current of the second coil 442 to make carrier 360 mobile along second direction (Y direction) according to the second magnetic variable quantity.
Particularly, the side of one of them the first coil 441 in two the first coils 441 is provided with the first detecting element 471.The side of one of them the second coil 442 in two the second coils 442 is provided with the second detecting element 472.Further, the first detecting element 471 and the second detecting element 472 are Hall chip.
When autofocus lens module 300 is when the amount of movement of X-direction is A, first coil 441 is powered by first circuit board 200, first detecting element 471 detects the magnetic variable quantity of the first coil 441 and feeds back to controller, controller controls the electric current of the first coil 441 according to magnetic variable quantity, second coil 442 is not powered simultaneously, the magnetic field that first coil 441 produces acts on mutually with the first magnetic, so make the first ball 430 drive autofocus lens module 300 to move in the X-axis direction with Contrary compensation amount of jitter-A, and then realize the compensation of shake.Jitter compensation in Y direction in like manner.
The above-mentioned camera module with focusing and anti-trembling function does not adopt suspention line structure when realizing focusing and anti-trembling function, and therefore without the need to adopting special material, structure is simple, has saved cost.And when producing jitter compensation, whole autofocus lens module, all relative to the planar movement perpendicular to optical axis, ensure that image sensor and camera lens module are all the time on same optical axis, avoid the problem that surrounding resolving power declines.
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. there is a camera module for focusing and anti-trembling function, it is characterized in that, comprising:
Rack shell, has an openend, and one end relative with described openend offers light hole;
First circuit board, is arranged at described openend, and described rack shell and described first circuit board surround a receiving space jointly;
Autofocus lens module, is contained in described receiving space, and described autofocus lens module is electrically connected with described first circuit board; And
Stabilization mechanism, comprise the first web member, the first actuator, the first guide member and the second guide member, described first guide member is positioned on described first circuit board, described second guide member is positioned at the bottom of described autofocus lens module, described first web member connects described first guide member and described second guide member, and described first actuator is for driving described autofocus lens module relative to described first circuit board along the planar movement perpendicular to the optical axis of described autofocus lens module.
2. the camera module with focusing and anti-trembling function according to claim 1, it is characterized in that, described first guide member comprises and is opened on described first circuit board at least three not the first circular guideways on the same line, described second guide member comprises at least three of the bottom being opened in described autofocus lens module not the second circular guideways on the same line, and described first web member comprises the first ball be arranged between described first circular guideway and described second circular guideway.
3. the camera module with focusing and anti-trembling function according to claim 2, it is characterized in that, the diameter of described first circular guideway equals the diameter of described second circular guideway, the diameter of described first ball is less than the diameter of described first circular guideway, and the diameter of described first ball is greater than the degree of depth of described first circular guideway of twice.
4. the camera module with focusing and anti-trembling function according to claim 1, it is characterized in that, described first actuator comprises the first coil, the second coil, the first magnetic and the second magnetic;
The bottom of described autofocus lens module is located at by described first coil, described first magnetic to be located on described first circuit board and to be oppositely arranged with described first coil, and described first coil produces magnetic field by energising and acts on mutually with described first magnetic thus drive described autofocus lens module to move along the first direction in described plane;
The bottom of described autofocus lens module is located at by described second coil, described second magnetic to be located on described first line plate and relative with described second coil, and described second coil produces magnetic field by energising and acts on mutually with described second magnetic thus drive described autofocus lens module to move along the second direction in described plane; Wherein, described first direction is perpendicular to described second direction.
5. the camera module with focusing and anti-trembling function according to claim 1, it is characterized in that, described stabilization mechanism also comprises the second web member, the 3rd guide member and the 4th guide member, described 3rd guide member is arranged at the inside surface of the roof described rack shell offering light hole, described 4th guide member is arranged at the top of described autofocus lens module, and described second web member connects described 3rd guide member and described 4th guide member.
6. the camera module with focusing and anti-trembling function according to claim 5, it is characterized in that, described 3rd guide member comprises at least three of the inside surface being opened in the roof described rack shell offering light hole not the 3rd circular guideways on the same line;
Described 4th guide member comprise the top that is opened in described autofocus lens module and with corresponding at least three of arranging of described 3rd circular guideway not the 4th circular guideway on the same line;
Described second web member comprises multiple second balls be located between described multiple 3rd circular guideway and described multiple 4th circular guideway.
7. the camera module with focusing and anti-trembling function according to claim 6, it is characterized in that, the diameter of described 3rd circular guideway equals the diameter of described 4th circular guideway, the diameter of described second ball is less than the diameter of described 3rd circular guideway, and the diameter of described second ball is greater than the degree of depth of described 3rd circular guideway of twice.
8. the camera module with focusing and anti-trembling function according to claim 4, it is characterized in that, described stabilization mechanism also comprises the first detecting element, the second detecting element and controller;
Described first detecting element is for detecting the first magnetic variable quantity of described first coil and feeding back to described controller, and the electric current that described controller controls described first coil according to described first magnetic variable quantity moves along described first direction to make described carrier;
Described second detecting element is for detecting the second magnetic variable quantity of described second coil and feeding back to described controller, and the electric current that described controller controls described second coil according to described second magnetic variable quantity moves along described second direction to make described carrier.
9. the camera module with focusing and anti-trembling function according to claim 1, it is characterized in that, described autofocus lens module comprises second circuit board, base, image sensor, optical filter, camera lens module, carrier, focusing coil, focusing magnet, upper shell fragment, lower shell fragment and voice coil motor, described second circuit board is electrically connected with described first circuit board, described second guide member is positioned at the bottom of described second circuit board, the bottom of described base is arranged on described second circuit board, described image sensor is arranged on described second circuit board, and be positioned at the inside of described base, described optical filter to be arranged on described base and to be positioned at above described image sensor, described carrier is hollow cylindrical configuration, described camera lens module is arranged in described carrier, described focusing coil winding is in the outer peripheral edges of described carrier, described focusing coil is electrically connected with described second circuit board, described focusing magnet to be contained in described voice coil motor and to be oppositely arranged with described focusing coil, one end of described carrier is arranged on described upper shell fragment, the other end of described carrier is arranged on described lower shell fragment, described camera lens module, carrier, focusing coil, upper shell fragment and lower shell fragment are contained in described voice coil motor.
10. the camera module with focusing and anti-trembling function according to claim 9, it is characterized in that, described second circuit board is Rigid Flex, comprise PCB substrate and FPC wiring board, described PCB substrate is arranged at the bottom of described base, and described FPC wiring board is electrically connected with described first circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610044501.9A CN105573014A (en) | 2016-01-22 | 2016-01-22 | Camera module with focusing and anti-shaking functions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610044501.9A CN105573014A (en) | 2016-01-22 | 2016-01-22 | Camera module with focusing and anti-shaking functions |
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| CN105573014A true CN105573014A (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610044501.9A Pending CN105573014A (en) | 2016-01-22 | 2016-01-22 | Camera module with focusing and anti-shaking functions |
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