WO2022036810A1 - Module de lentille - Google Patents

Module de lentille Download PDF

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Publication number
WO2022036810A1
WO2022036810A1 PCT/CN2020/118356 CN2020118356W WO2022036810A1 WO 2022036810 A1 WO2022036810 A1 WO 2022036810A1 CN 2020118356 W CN2020118356 W CN 2020118356W WO 2022036810 A1 WO2022036810 A1 WO 2022036810A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
pin
bracket
fixed
shape memory
Prior art date
Application number
PCT/CN2020/118356
Other languages
English (en)
Chinese (zh)
Inventor
李林珍
卢继亮
李刚
张晋
Original Assignee
诚瑞光学(深圳)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 诚瑞光学(深圳)有限公司 filed Critical 诚瑞光学(深圳)有限公司
Publication of WO2022036810A1 publication Critical patent/WO2022036810A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • 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

Definitions

  • the invention relates to the technical field of lens optical imaging, in particular to a lens module.
  • the high-performance lens module generally has Auto Focusing (AF) and Optical Image Stabilization (OIS). Stabilization, OIS).
  • AF Auto Focusing
  • OIS Optical Image Stabilization
  • the high-performance lens module moves the lens along the optical axis direction of the lens during autofocus, and moves the lens along the direction perpendicular to the optical axis of the lens when realizing the optical anti-shake function.
  • the lens module in the related art usually drives the automatic focusing and optical image stabilization of the lens through an electromagnetic structure.
  • the electromagnetic structure of such a lens module not only needs to occupy a large space of the module, but also has a complex structure and is susceptible to electromagnetic wave interference.
  • the purpose of the present invention is to provide a lens module, which not only has a simple structure, no magnetic interference, can greatly save the space of the module, but also can provide a larger space in a limited space compared with the electromagnetic structure. driving force.
  • the lens module provided by the present invention includes a driving device, a bottom plate, an intermediate bracket and a lens bracket for installing the lens, which are arranged at intervals along the optical axis direction of the lens.
  • the driving device includes A pair of first shape memory alloy wires at both ends of the first diagonal and driving the lens holder to rotate relative to the second pin and the intermediate holder, and two ends of the second diagonal and drive a pair of second shape memory alloy wires that rotate relative to the first pin and the base plate around the lens bracket and the intermediate bracket.
  • a position corresponding to the first pin of the intermediate bracket is provided with a first hole for inserting the first pin
  • a position corresponding to the second pin of the lens bracket is provided with a hole for insertion of the first pin.
  • the second hole into which the second pin is inserted, the inner wall of the first hole and the inner wall of the second hole are concave spherical surfaces, and the first pin and the second pin are respectively connected to the first hole.
  • the end abutting against the second hole is a convex spherical surface, the diameter of the first hole is larger than the outer diameter of the first pin, and the diameter of the second hole is larger than the outer diameter of the second pin.
  • the first shape memory alloy wire and the second shape memory alloy wire are the same, including two ends fixed on the base plate and a driving end fixed on the lens bracket and connecting the ends and an extension of the drive end.
  • the bottom plate comprises a pair of opposite and spaced first side edges and a pair of second side edges connected to the first side edges and spaced apart, the first shape memory alloy wire or the second One end of the shape memory alloy wire is fixed on the first side edge, and the other end is fixed on the second side edge adjacent to the first side edge.
  • the end is fixed on the base plate by a wire binding clip.
  • opposite ends of the lens holder along the first diagonal line and opposite ends along the second diagonal line are provided with wire grooves, and the wire grooves are located at the lens holder away from the On one side of the bottom plate, the driving end is located in the wire groove.
  • a first restoring elastic sheet is provided between the bottom plate and the intermediate bracket, and the first restoring elastic sheet includes a first connecting portion fixed on the intermediate support, fixed on the bottom plate and connected to the The second connecting part arranged at intervals from the first connecting part and the elastic part connecting the first connecting part and the second connecting part, when the lens bracket and the intermediate bracket wrap around the first pin and the bottom plate When the relative rotation occurs, the elastic portion is elastically deformed.
  • a second restoring elastic piece is arranged between the intermediate bracket and the lens support, and the second restoring elastic piece includes a first fixing portion fixed on the lens support, fixed on the intermediate support and connected with the lens support.
  • the second fixing part arranged at intervals on the first fixing part and the deforming part connecting the first fixing part and the second fixing part, when the lens holder is opposite to the intermediate holder around the second pin During rotation, the deformation portion is elastically deformed.
  • the first diagonal line is perpendicular to the second diagonal line.
  • the lens module provided by the present invention drives the lens support around the second pin and the intermediate support through a pair of first shape memory alloy wires disposed at both ends of the first diagonal. Relative rotation, and through a pair of second shape memory alloy wires arranged at both ends of the second diagonal, the lens bracket and the intermediate bracket are driven to rotate relative to the first pin and the bottom plate, not only can
  • the structure of the lens module is simplified, the space of the module is saved to avoid magnetic interference, and a larger driving force can be provided in a limited space compared with the electromagnetic structure.
  • FIG. 1 is a perspective view of a preferred embodiment of a lens module provided by the present invention.
  • FIG. 2 is a cross-sectional view of the lens module shown in FIG. 1 along the line A-A.
  • FIG. 3 is a cross-sectional view of the lens module shown in FIG. 2 along line B-B.
  • FIG. 4 is a schematic structural diagram of a part of the structure of the lens module shown in FIG. 1 .
  • FIG. 5 is an exploded view of the partial structure shown in FIG. 4 .
  • FIG. 6 is a schematic structural diagram of another angle of the partial structure shown in FIG. 5 .
  • the lens module includes a driving device 1 , a base plate 2 , an intermediate bracket 3 and a lens bracket 5 for installing the lens 4 , which are arranged at intervals along the optical axis direction of the lens 4 .
  • the first pair of Both ends of the diagonal line a are respectively provided with first pins 6 which are fixed on the bottom plate 2 and support the intermediate bracket 3, and both ends of the second diagonal line b are respectively provided with fixed on the intermediate bracket 3 and support
  • the second pin 7 of the lens holder 5 the driving device 1 includes two ends of the first diagonal line a and drives the lens holder 5 around the second pin 7 and the intermediate holder 3 A pair of first shape memory alloy wires 11 that rotate relative to each other and are arranged at both ends of the second diagonal line b and drive the lens holder 5 and the intermediate holder 3 to revolve around the first pin 6 and the A pair of second shape memory alloy wires 13 that rotate relative to the bottom plate 2 .
  • the lens holder 5 When a pair of the first shape memory alloy wires 11 are not energized at the same time or are energized at the same time and the size of the energization is different, because the first shape memory alloy wires 11 are energized and contracted, the lens holder 5 is wound around the second pin 7 and the intermediate bracket 3 rotate relative to each other, and the lens bracket 5 can be rotated to a designated position by adjusting the magnitude of the current.
  • the second shape memory alloy wires 13 When a pair of the second shape memory alloy wires 13 are not energized at the same time or are energized at the same time and the size of the energization is different, the second shape memory alloy wires 13 are energized and contracted, so that the lens holder 5 and the intermediate holder 3 Relative rotation occurs around the first pin 6 and the base plate 2, and the lens holder 5 and the intermediate holder 3 can be rotated to a designated position by adjusting the magnitude of the current.
  • a first hole 31 into which the first pin 6 is inserted is provided at a position of the intermediate bracket 3 corresponding to the first pin 6 , and the lens bracket 5 and the second pin are provided with a first hole 31 .
  • 7 is provided with a second hole 51 in which the second pin 7 is inserted, the inner wall of the first hole 31 and the inner wall of the second hole 51 are concave spherical surfaces, the first pin 6 and The ends of the second pin 7 abutting against the first hole 31 and the second hole 51 respectively are convex spherical surfaces, wherein the diameter of the first hole 31 is larger than that of the first pin 6 .
  • the outer diameter of the second hole 51 is larger than the outer diameter of the second pin 7 .
  • the friction force between the second pin 7 and the inner wall of the second hole 51 can reduce the friction between the lens bracket 5 and the intermediate bracket 3 around the The friction force between the first pin 6 and the inner wall of the first hole 31 when the first pin 6 and the bottom plate 2 rotate relative to each other.
  • the first shape memory alloy wire 11 and the second shape memory alloy wire 13 are the same, and both include two ends 1A fixed on the bottom plate 2 and a drive fixed on the lens bracket 5 end 1B and an extension 1C connecting the end 1A and the driving end 1B.
  • the bottom plate 2 includes a pair of first side edges 21 opposite to each other and spaced apart and a pair of second side edges 23 connected to the first side edges 21 and spaced apart.
  • the first shape memory alloy One end 1A of the wire 11 or the second shape memory alloy wire 13 is fixed on the first side 21 , and the other end 1A is fixed on the second side adjacent to the first side 21 Side 23.
  • the end 1A is fixed on the base plate 2 by a wire binding clip 8 .
  • the shape memory alloy wire can be electrically connected to the power source through the wire binding clip 8 .
  • the lens holder 5 has wire grooves 53 at opposite ends along the first diagonal line a and opposite ends along the second diagonal line b, and the wire grooves 53 are located in the The side of the lens holder 5 away from the bottom plate 2 is located, and the driving end 1B is located in the wire slot 53 .
  • the driving end 1B can be restricted from moving along the diagonal line (the first diagonal line a or the second diagonal line b).
  • a first return elastic piece 9 is provided between the bottom plate 2 and the intermediate bracket 3 , and the first return elastic piece 9 includes a first connecting portion 91 fixed on the intermediate bracket 3 and fixed on the The second connecting portion 93 on the bottom plate 2 and spaced apart from the first connecting portion 91 and the elastic portion 95 connecting the first connecting portion 91 and the second connecting portion 93, when the lens holder 5 When the intermediate bracket 3 rotates relative to the first pin 6 and the bottom plate 2 , the elastic portion 95 is elastically deformed.
  • the first restoring elastic piece 9 By arranging the first restoring elastic piece 9, a force can be provided for the lens support 5 and the intermediate support 3 to return to the initial position.
  • the two first restoring elastic pieces 9 there are two first restoring elastic pieces 9 , and the two first restoring elastic pieces 9 are arranged at intervals along the second diagonal line b; the second connecting portion 93 is provided with two and two of the second connecting portions 93 are located on both sides of the second diagonal line b. It can be understood that, in other embodiments, only one second connecting portion may be provided; in this case, preferably, the first connecting portion, the second connecting portion and the elastic portion on the second diagonal line b.
  • a second restoring elastic piece 10 is provided between the intermediate bracket 3 and the lens support 5 , and the second restoring elastic piece 10 includes a first fixing portion 101 fixed on the lens support 5 , a fixing The second fixing part 103 on the intermediate bracket 3 and spaced apart from the first fixing part 101 and the deforming part 105 connecting the first fixing part 101 and the second fixing part 103, when the lens When the bracket 5 rotates relative to the middle bracket 3 around the second pin 7 , the deformation portion 105 is elastically deformed.
  • the second restoring elastic piece 10 can provide a force for restoring the lens holder 5 to the initial position.
  • the two second restoring elastic sheets 10 there are two second restoring elastic sheets 10 , and the two second restoring elastic sheets 10 are arranged at intervals along the first diagonal line a; the second fixing portion 103 is provided with two and two of the second fixing portions 103 are located on both sides of the first diagonal line a. It can be understood that, in other embodiments, only one second fixing portion may be provided; in this case, preferably, the first fixing portion, the second fixing portion and the deforming portion are on the first diagonal line a.
  • the first diagonal line a is perpendicular to the second diagonal line b.
  • a pair of the first shape memory alloy wires 11 and a pair of the second shape memory alloy wires 13 can use the same energization scheme (for example, not energized at the same time and the size of the energization is the same; energized at the same time and the size of the energization is different)
  • the rotation angle generated by the rotation of the lens bracket 5 relative to the intermediate bracket 3 is equal to the rotation angle generated by the rotation of the lens bracket 5 and the intermediate bracket 3 relative to the base plate 2, thereby facilitating the simplification of the A shape memory alloy wire 11 and the second shape memory alloy wire 13 input current control.
  • the lens module provided by the present invention drives the lens bracket 5 to be opposite to the intermediate bracket 3 around the second pin 7 through a pair of first shape memory alloy wires 11 disposed at both ends of the first diagonal line a.
  • Relative rotation can not only simplify the structure of the lens module, save the space of the module and avoid magnetic interference, but also provide a larger driving force in a limited space compared to the electromagnetic structure.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)

Abstract

L'invention concerne un module de lentille comprenant un dispositif d'entraînement (1), et une plaque de base (2), un support intermédiaire (3) et un support de lentille (5) pour le montage d'une lentille (4) qui sont agencés séquentiellement à des intervalles le long d'une direction d'axe optique de la lentille (4) ; deux extrémités d'une première diagonale (a) sont respectivement pourvues d'une première broche (6) fixée à la plaque de base (2) et supportant le support intermédiaire (3), deux extrémités d'une seconde diagonale (b) sont respectivement pourvues d'une seconde broche (7) fixée au support intermédiaire (3) et supportant le support de lentille (5), et le dispositif d'entraînement (1) comprend une paire de premiers fils d'alliage à mémoire de forme (11) et une paire de seconds fils d'alliage à mémoire de forme (13), les premiers fils d'alliage à mémoire de forme étant agencés au niveau de deux extrémités de la première diagonale (a) et entraînant le support de lentille (5) pour tourner par rapport au support intermédiaire (3) autour des secondes broches (7), et les seconds fils d'alliage à mémoire de forme étant agencés au niveau de deux extrémités de la seconde diagonale (b) et entraînant le support de lentille (5) et le support intermédiaire (3) pour tourner par rapport à la plaque de base (2) autour des premières broches (6). Le module de lentille a une structure simple et est exempt d'interférence magnétique, réduit considérablement l'espace occupé par ledit module, et peut fournir une force d'entraînement plus grande dans un espace limité par comparaison avec une structure électromagnétique.
PCT/CN2020/118356 2020-08-19 2020-09-28 Module de lentille WO2022036810A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021728259.5U CN211554446U (zh) 2020-08-19 2020-08-19 镜头模组
CN202021728259.5 2020-08-19

Publications (1)

Publication Number Publication Date
WO2022036810A1 true WO2022036810A1 (fr) 2022-02-24

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ID=72499213

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/118356 WO2022036810A1 (fr) 2020-08-19 2020-09-28 Module de lentille

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CN (1) CN211554446U (fr)
WO (1) WO2022036810A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211554446U (zh) * 2020-08-19 2020-09-22 瑞声通讯科技(常州)有限公司 镜头模组

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1932586A (zh) * 2005-09-15 2007-03-21 宾得株式会社 抗振***
CN101408658A (zh) * 2007-10-09 2009-04-15 一品光学工业股份有限公司 具有形状记忆合金的镜头移位机构
CN102262329A (zh) * 2010-05-27 2011-11-30 佳能株式会社 图像稳定装置和具有该图像稳定装置的光学装置
KR20160102803A (ko) * 2015-02-23 2016-08-31 자화전자(주) 손 떨림 보정 장치 및 이를 포함하는 카메라 렌즈 모듈
CN109564355A (zh) * 2016-05-19 2019-04-02 哈钦森技术股份有限公司 相机镜头悬置器
CN110023831A (zh) * 2016-12-13 2019-07-16 艾斯科技公司 光学图像稳定器
CN110998433A (zh) * 2017-08-07 2020-04-10 Lg伊诺特有限公司 透镜驱动装置、相机模块以及光学设备
CN211554446U (zh) * 2020-08-19 2020-09-22 瑞声通讯科技(常州)有限公司 镜头模组

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1932586A (zh) * 2005-09-15 2007-03-21 宾得株式会社 抗振***
CN101408658A (zh) * 2007-10-09 2009-04-15 一品光学工业股份有限公司 具有形状记忆合金的镜头移位机构
CN102262329A (zh) * 2010-05-27 2011-11-30 佳能株式会社 图像稳定装置和具有该图像稳定装置的光学装置
KR20160102803A (ko) * 2015-02-23 2016-08-31 자화전자(주) 손 떨림 보정 장치 및 이를 포함하는 카메라 렌즈 모듈
CN109564355A (zh) * 2016-05-19 2019-04-02 哈钦森技术股份有限公司 相机镜头悬置器
CN110023831A (zh) * 2016-12-13 2019-07-16 艾斯科技公司 光学图像稳定器
CN110998433A (zh) * 2017-08-07 2020-04-10 Lg伊诺特有限公司 透镜驱动装置、相机模块以及光学设备
CN211554446U (zh) * 2020-08-19 2020-09-22 瑞声通讯科技(常州)有限公司 镜头模组

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