CN105158872A - Focusing structure, lens assembly and camera module - Google Patents
Focusing structure, lens assembly and camera module Download PDFInfo
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- CN105158872A CN105158872A CN201510527180.3A CN201510527180A CN105158872A CN 105158872 A CN105158872 A CN 105158872A CN 201510527180 A CN201510527180 A CN 201510527180A CN 105158872 A CN105158872 A CN 105158872A
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Abstract
The invention discloses a focusing structure used for the focusing of the camera module, which comprises a fixed base, an elastic sheet, a focusing lens, a coil and a magnet. The outer edge of the elastic sheet is fixed onto the fixed base. The middle part of the elastic sheet is provided with an installation hole. The focusing lens is fixed onto the elastic sheet and is accommodated inside the installation hole. The coil is wound onto the outer peripheral edge of the focusing lens. The magnet is fixed onto the elastic sheet or the fixed base, and is positioned between the coil and the fixed base. The magnet is arranged to surround the coil. When the coil is energized, the magnet is matched with the coil to generate a force for driving the coil to move along the optical axis direction of the focusing lens. Therefore, the focusing lens is driven to move along the optical axis direction of the focusing lens. Based on the focusing structure, the damage of a torsional force generated during the locking assembly of a voice coil motor with the entire lens is avoided. Meanwhile, the dust pollution is avoided. At the same time, the lens is prevented from being inclined. The invention also discloses a lens assembly and a camera module.
Description
Technical field
The present invention relates to optical camera field, particularly relate to a kind of focusing structural for camera, there is the lens assembly of this focusing structural and there is the camera module of this lens assembly.
Background technology
The electronic products such as mobile device, computing machine and accutron have camera module usually, camera module generally includes camera lens, optical filter, image sensor and circuit board, in order to obtain image clearly, usually need focusing, and existing camera module majority is provided with automatic focusing function.In existing focusing mode, auto-focusing normally moves by motor voice coil loudspeaker voice coil the object that whole camera lens reaches focusing, and motor voice coil loudspeaker voice coil is mated by thread with between camera lens, often there is following problem: motor voice coil loudspeaker voice coil and lens lock timing need the torque magnitude paid close attention between the two, the excessive fragile voice coil motor of torsion; Because the eyeglass of camera lens and the parts of motor voice coil loudspeaker voice coil carrying camera lens are generally polyesters material, so motor voice coil loudspeaker voice coil and lens lock timing, the existence of torsion makes it easily to produce dust, thus pollutes whole module; Motor voice coil loudspeaker voice coil and lens lock timing easily produce inclination, affect the image quality of camera module.Therefore, be necessary to provide a kind of new focusing structural, to improve the quality of camera module.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of focusing structural, the destruction caused by torsion that described focusing structural can avoid motor voice coil loudspeaker voice coil and lens lock timing to produce, and no dust pollution, avoid camera lens run-off the straight simultaneously.
The present invention also provides a kind of lens assembly and camera module.
In order to solve the problem, the present invention takes following technical scheme:
First aspect, a kind of focusing structural is provided, described focusing structural comprises holder, shell fragment, to focus lens, coil and magnet, the outward flange of described shell fragment is fixed on described holder, the middle part of described shell fragment has mounting hole, described described shell fragment is fixed on to focus lens, and be contained in described mounting hole, described coil winding is in the described outer peripheral edges to focus lens, described magnet is fixed on described shell fragment or described holder, and between described holder and described coil, described magnet is arranged around described coil, during described coil electricity, described magnet and described fitting coils and produce and make described coil along described power of moving to the optical axis direction of focus lens, thus drive described to focus lens along described axis movement.
In the first possibility embodiment of first aspect, described shell fragment comprises fixed part and deformations, can not deformation be there is in described fixed part, described fixed part is near described holder, described deformations extends to the inward flange of described shell fragment from described fixed part, describedly connect with described deformations to focus lens, described magnet is fixed on described fixed part.
May embodiment in conjunction with the first of first aspect or first aspect, may in embodiment at the second of first aspect, described magnet comprises multiple small magnet, described small magnet with described shell fragment for the plane of symmetry and be fixed on the both sides of described shell fragment.
The first or the second in conjunction with first aspect, first aspect may embodiments, may in embodiment at the third of first aspect, and described holder is yoke.
Second aspect, the invention provides a kind of lens assembly, comprise lens barrel, first of main lens set and first aspect and first aspect may focusing structural described in any one in embodiment to the third, described lens barrel has relative first surface and second surface, described lens barrel has the inner chamber of through described first surface and described second surface, described main lens set is arranged at described inner chamber and close described first surface, described focusing structural is arranged at described inner chamber and close described second surface, and make described coaxial with described main lens set to focus lens, described focusing structural is contained in described lens barrel.
In the first possibility embodiment of second aspect, described lens assembly also comprises base and optical filter, described base has the upper surface and lower surface that are oppositely arranged, and the accommodation space of through described upper surface and described lower surface, described optical filter is arranged at described accommodation space, and near described upper surface, described base is arranged at described second surface, and the described upper surface of described base and described second surface are fitted.
The third aspect, the invention provides a kind of camera module, comprise image sensor, circuit board and second aspect or second aspect the first may the lens assembly described in embodiment, described image sensor is relative with described optical filter, described image sensor is arranged on described circuit board, and being contained in the described accommodation space of described base, described circuit board is pasted on the lower surface of described base.
Fourth aspect, the present invention also provides another kind of lens assembly, comprise lens barrel, main lens set and first aspect or first aspect the first may focusing structural described in any one of embodiment to the third, described lens barrel has relative first surface and second surface, described lens barrel has the inner chamber of through described first surface and described second surface, described main lens set is arranged at described inner chamber, described focusing structural is arranged at the described second surface of described lens barrel, and makes described coaxial with described main lens set to focus lens.
In the first possibility embodiment of fourth aspect, described lens assembly also comprises base and optical filter, described base has upper surface and lower surface, described base has the accommodation space of through described upper surface and described lower surface, described optical filter is arranged at described accommodation space, and near described upper surface, described base is arranged at the lower surface of described holder, and the lower surface of the described upper surface of described base and described holder is fitted.
5th aspect, present invention also offers another kind of camera module, comprise image sensor, circuit board and fourth aspect or fourth aspect the first may the lens assembly described in embodiment, described image sensor is arranged on described circuit board, and be contained in the described accommodation space of described base, described image sensor is relative with described optical filter, and is positioned at the below of optical filter, and described circuit board is pasted on the lower surface of described base.
Compared with prior art, focusing structural of the present invention has following beneficial effect: in (1) focusing structural of the present invention using last a slice eyeglass of lens assembly as to focus lens, only mobile this is focused to focus lens, avoid the damage that torsion causes, avoid tilt problem simultaneously; (2) in focusing structural of the present invention, coil encircling is arranged focus lens, and magnet ring coiling is arranged, and three is almost in same plane, reduces the height of camera module.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of focusing structural in embodiments of the invention;
Fig. 2 is the structural representation of the shell fragment of focusing structural in embodiments of the invention;
Fig. 3 and Fig. 4 is the structural representation of lens assembly in the first embodiment of the present invention;
Fig. 5 is the structural representation of camera module in the first embodiment of the present invention;
Fig. 6 to Fig. 8 is the structural representation of lens assembly in the second embodiment of the present invention;
Fig. 9 is the structural representation of camera module in the second embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly described.
Refer to Fig. 1 and Fig. 2, be depicted as the structural representation of focusing structural in embodiments of the invention.Described focusing structural comprise holder 110, shell fragment 120, to focus lens 130, coil 140 and magnet 150.The outward flange of shell fragment 120 is fixed on described holder 110, the middle part of described shell fragment 120 has mounting hole 121, described described mounting hole 121 is fixed on to focus lens 130, described coil 140 around described to focus lens 130, and with described coaxial to focus lens 130, described magnet 150 is arranged around described coil 140, when described coil 140 is energized, described magnet 150 coordinates with described coil 140 and produces the power making described coil 140 along the described axis movement to focus lens 130, thus drive described to focus lens 130 along described axis movement.
Particularly, in the focusing structural that the present embodiment provides, holder 110 is in hollow form, and it can be annular, and the outward flange of shell fragment 120 is fixed on the inwall of holder 110, and whole shell fragment 120 is contained in holder 110.The inwall of holder 110 has the structure of fixation spring tab 120, such as, it can be the groove (scheming not shown) that the thickness of size and shell fragment 120 is suitable, the neighboring of shell fragment 120 embeds the described groove of the inwall of holder 110, thus fixation spring tab 120, further, can also be fixed by viscose glue.The middle part of shell fragment 120 has mounting hole 121, namely shell fragment 120 ringwise, in one embodiment, shell fragment 120 comprises fixed part 123 and deformations 122, can not there is deformation in fixed part 123, and deformation when stressed, 122 stressed time can there is deformation, fixed part 123 is near holder 110, and deformations 122 extends to the inward flange of shell fragment from fixed part 123., be fixed on described mounting hole 121 to focus lens 130, its neighboring connects with the deformations 122 of shell fragment 120, can be fitted by viscose glue.Coil 140 is arranged around to focus lens 130, and with coaxial to focus lens 130, coil 140 is between focus lens 130 and magnet 150, particularly, coil 140 is directly wound in the neighboring to focus lens 130, shell fragment 120 can pass from the gap between the heart yearn of coil 140, engages with to the neighboring of focus lens 130.Magnet 150 is arranged around described coil 140, and between coil 140 and holder 110, preferably, magnet 150 is coaxial with coil 140, and magnet 150 is fixed on shell fragment 120.In other embodiment, magnet 150 can also be fixed on the inwall of holder 110.The N pole of magnet 150 and S pole, specifically arranged as required.Such as, the N pole of magnet 150 and the line of S pole, perpendicular to the axis of coil 140, when coil 140 is energized, produces and make coil 140 along the Lorentz force moved to the optical axis direction of focus lens 130.That is, by the electromagnetic wire direction of the size of the electric current of control coil 140, direction and magnet 150, producing makes coil 140 along the Lorentz force of the optical axis back and forth movement to focus lens 130, thus drive moves back and forth along optical axis focus lens 130, thus reaches the object of focusing.In the present embodiment, owing to only having a slice to focus lens, only mobile this is focused to focus lens, avoids the torsion between an arrangement of mirrors sheet and motor voice coil loudspeaker voice coil and the damage that causes, avoids tilt problem simultaneously; In the focusing structural of the present embodiment, coil encircling is arranged focus lens, and magnet ring coiling is arranged, and three is coaxial, and is almost in same plane, can reduce the height of camera module; Further, mobile single to focus lens, relative to a mobile arrangement of mirrors sheet, required Lorentz force is less, can adopt less magnet and coil, is conducive to the lightening of camera module.
In the present embodiment, magnet 150 can be fixed on shell fragment 120 for the plane of symmetry with shell fragment 150, and such as magnet 150 can be made up of two pieces of identical annular small magnets, thus fixes in shell fragment 120 (plane of symmetry) both sides, and coaxial with shell fragment 120.Certainly, magnet 150 can be made up of more small magnets.
In the present embodiment, the mode that shell fragment 120 is fixed on holder 110 is not limited to groove, can also be fixed by alternate manner, such as, before injection moulding, shell fragment 120 is put into the mould of holder 110, then moulding by casting material, thus fixation spring tab 120.
In the present embodiment, holder 110 can be yoke, and it can make the magnetic line of force of magnet 150 be fully used.
Refer to Fig. 3, be depicted as the structural representation of lens assembly in first embodiment of the invention.Described lens assembly comprises lens barrel 220, main lens set 210 and above-described embodiment and the focusing structural described in any one of Fig. 1 100.Described lens barrel 220 has the first surface 221 and second surface 222 that are oppositely arranged, and described lens barrel 220 has the inner chamber (figure does not indicate) of through described first surface 221 and described second surface 222.Shape and the size of the shape at the position of the close first surface 221 of described inner chamber and size and main lens set 210 are corresponding, for installing described main lens set 210, the size at the position of the close second surface 222 of described inner chamber is corresponding with the size of focusing structural 100, for installing focusing structural 100.That is, main lens set 210 is arranged at described inner chamber and close first surface 221, focusing structural 100 is arranged at the below of described main lens set 210, and namely focusing structural 100 is arranged at described inner chamber and close second surface 222, and main lens set 210 and focusing structural 100 are all contained in lens barrel 220.Coaxial with described main lens set 210 to focus lens 130 in described focusing structural 100, the outer wall of described holder 110 and the inwall of described lens barrel fit.
Refer to Fig. 4, in the first embodiment, described lens assembly also comprises base 230 and optical filter 240.Described base 230 has upper surface and lower surface (figure does not indicate), and there is the accommodation space (figure does not indicate) of this upper surface through and lower surface, described upper surface is towards the surface identical with described first surface 221, and described lower surface refers to towards the surface identical with described second surface 222.Described base 230 is arranged at described second surface 222, and the upper surface of base 230 and described second surface 222 are fitted.Optical filter 240 is arranged at the described accommodation space of base 230, is contained in base 230, and the upper surface of close base 230.
Refer to Fig. 5, be depicted as the structural representation of camera module in the first embodiment of the present invention.Described camera module comprises image sensor 310, circuit board 320 and the first embodiment, lens assembly 200 described in any one of Fig. 2 and Fig. 3, described image sensor 310 is arranged on described circuit board 320, and described image sensor 310 is contained in the accommodation space of the described base 230 of described lens assembly 200, described image sensor 310 is relative with the described optical filter 240 of lens assembly 200, and be positioned at the below of optical filter 240, described circuit board 320 is pasted on the lower surface of described base 230, and described image sensor 310 is electrically connected with described circuit board 320.Described upper surface is towards the surface identical with described first surface 221, and described lower surface refers to towards the surface identical with described second surface 222.
Refer to Fig. 6 and Fig. 7, be depicted as the structural representation of lens assembly in the second embodiment of the present invention.The difference of the lens assembly in the present embodiment and the lens assembly described in the first embodiment is, the shape of lens barrel is different, and the focusing structural of the present embodiment is not contained in lens barrel.In the present embodiment, described lens assembly comprises lens barrel 220, main lens set 210 and above any embodiment or the focusing structural described in Fig. 1 100, described lens barrel 220 has relative first surface 221 and second surface 222 ', described lens barrel 220 has the inner chamber of through described first surface 221 and described second surface 222 ', shape and the size of the shape of described inner chamber and size and main lens set 210 are corresponding, described main lens set 210 is installed on described inner chamber, and is contained in described lens barrel 220.Described focusing structural 100 is arranged at the second surface 222 ' of described lens barrel 220, and the upper surface of holder 110 and second surface 222 ' are fitted, coaxial with described main lens set 210 to focus lens 130 in described focusing structural 100.Described upper surface be towards with described first surface 221 towards identical surface, described lower surface refer to towards with described second surface 222 ' towards identical surface.So, holder 110 described in the present embodiment replaces the end portion sidewall of lens barrel 220 described in the first embodiment, and described holder 110 is without the need to being contained in described lens barrel 220, easy for installation, and saves lens barrel material.
In a second embodiment, described lens assembly also comprises base 230 and optical filter 240, described base 230 is arranged at the lower surface of described holder 110, the upper surface of described base 230 and the lower surface of described holder are fitted, described base 230 has the accommodation space of its upper surface through and lower surface, described optical filter 240 is arranged at described accommodation space, and the upper surface of close described base 230.Described upper surface be towards with described first surface 221 towards identical surface, described lower surface refer to towards with described second surface 222 ' towards identical surface.
Refer to Fig. 8, in the second embodiment of the present invention, the integral structure that described holder 110 can not be split with described lens barrel 220 one-tenth.
Refer to Fig. 9, be depicted as the structural representation of camera module in the second embodiment of the present invention.Described camera module comprises image sensor 310, circuit board 320 and the second embodiment and the lens assembly described in any one of Fig. 5 to Fig. 7 200, described image sensor 310 is arranged on described circuit board 320, and be contained in the described accommodation space of described base 230, described image sensor 310 is relative with described optical filter 240, and be positioned at the below of described optical filter 240, described circuit board 320 is pasted on the lower surface of described base 230, and described image sensor 310 and described circuit board 320 are electrically connected.
Above-described embodiment, does not form the restriction to this technical scheme protection domain.The amendment done within any spirit at above-mentioned embodiment and principle, equivalently to replace and improvement etc., within the protection domain that all should be included in this technical scheme.
Claims (10)
1. a focusing structural, it is characterized in that, comprise holder, shell fragment, to focus lens, coil and magnet, the outward flange of described shell fragment is fixed on described holder, the middle part of described shell fragment has mounting hole, described described shell fragment is fixed on to focus lens, and be contained in described mounting hole, described coil winding is in the described outer peripheral edges to focus lens, described magnet is fixed on described shell fragment or described holder, and between described holder and described coil, described magnet is arranged around described coil, during described coil electricity, described magnet and described fitting coils and produce and make described coil along described power of moving to the optical axis direction of focus lens, thus drive described to focus lens along described axis movement.
2. focusing structural as claimed in claim 1, it is characterized in that, described shell fragment comprises fixed part and deformations, can not deformation be there is in described fixed part, described fixed part is near described holder, described deformations extends to the inward flange of described shell fragment from described fixed part, describedly connects with described deformations to focus lens, and described magnet is fixed on described fixed part.
3. focusing structural as claimed in claim 2, it is characterized in that, described magnet comprises multiple small magnet, described small magnet with described shell fragment for the plane of symmetry and be fixed on the both sides of described shell fragment.
4. the focusing structural as described in any one of claims 1 to 3, is characterized in that, described holder is yoke.
5. a lens assembly, it is characterized in that, comprise lens barrel, main lens set and the focusing structural described in any one of Claims 1-4, described lens barrel has relative first surface and second surface, described lens barrel has the inner chamber of through described first surface and described second surface, described main lens set is arranged at described inner chamber and near described first surface, described focusing structural is arranged at described inner chamber and close described second surface, and makes described coaxial with described main lens set to focus lens.
6. lens assembly as claimed in claim 5, it is characterized in that, described lens assembly also comprises base and optical filter, described base has the accommodation space of upper surface and lower surface and through described upper surface and the described lower surface be oppositely arranged, described optical filter is arranged at described accommodation space, and the described upper surface of close described base, described base is arranged at described second surface, and the described upper surface of described base and described second surface are fitted.
7. a camera module, it is characterized in that, comprise the lens assembly described in image sensor, circuit board and claim 5 or 6, described image sensor is relative with described optical filter, described image sensor is arranged on described circuit board, and being contained in the described accommodation space of described base, described circuit board is pasted on the lower surface of described base.
8. a lens assembly, it is characterized in that, comprise lens barrel, main lens set and the focusing structural described in any one of Claims 1-4, described lens barrel has relative first surface and second surface, described lens barrel has the inner chamber of through described first surface and described second surface, described main lens set is arranged at described inner chamber, and described focusing structural is arranged at the described second surface of described lens barrel, and makes described coaxial with described main lens set to focus lens.
9. lens assembly as claimed in claim 8, it is characterized in that, described lens assembly also comprises base and optical filter, described base has relative upper surface and lower surface, described base has the accommodation space of through described upper surface and described lower surface, and described optical filter is arranged at described accommodation space, and the upper surface of close described base, described base is arranged at the lower surface of described holder, and the described lower surface of the described upper surface of described base and described holder is fitted.
10. a camera module, it is characterized in that, comprise the lens assembly described in image sensor, circuit board and claim 8 or 9, described image sensor is arranged on described circuit board, and be contained in the described accommodation space of described base, described image sensor is relative with described optical filter, and is positioned at the below of optical filter, and described circuit board is pasted on the lower surface of described base.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510527180.3A CN105158872A (en) | 2015-08-25 | 2015-08-25 | Focusing structure, lens assembly and camera module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510527180.3A CN105158872A (en) | 2015-08-25 | 2015-08-25 | Focusing structure, lens assembly and camera module |
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| CN105158872A true CN105158872A (en) | 2015-12-16 |
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| CN201510527180.3A Pending CN105158872A (en) | 2015-08-25 | 2015-08-25 | Focusing structure, lens assembly and camera module |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107135344A (en) * | 2017-06-15 | 2017-09-05 | 惠州大亚湾三美达光学技术有限公司 | A kind of micro-optical zoom module |
| WO2019184940A1 (en) * | 2018-03-27 | 2019-10-03 | 华为技术有限公司 | Triple camera device and terminal device |
| CN112584001A (en) * | 2019-09-27 | 2021-03-30 | 华为技术有限公司 | Camera module and terminal equipment |
| CN114167571A (en) * | 2021-12-03 | 2022-03-11 | 福建师范大学 | Fast focusing relay lens and fast focusing device |
| CN115629459A (en) * | 2022-10-21 | 2023-01-20 | 荣耀终端有限公司 | Lens barrel assembly and manufacturing method thereof, voice coil motor, camera module and terminal equipment |
| WO2023173997A1 (en) * | 2022-03-16 | 2023-09-21 | 宁波舜宇光电信息有限公司 | Lens assembly and assembling method therefor, and camera module |
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| CN115629459A (en) * | 2022-10-21 | 2023-01-20 | 荣耀终端有限公司 | Lens barrel assembly and manufacturing method thereof, voice coil motor, camera module and terminal equipment |
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Application publication date: 20151216 |