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GB2577203A - Shape memory alloy actuators and methods thereof - Google Patents

Shape memory alloy actuators and methods thereof Download PDF

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Publication number
GB2577203A
GB2577203A GB1917208.9A GB201917208A GB2577203A GB 2577203 A GB2577203 A GB 2577203A GB 201917208 A GB201917208 A GB 201917208A GB 2577203 A GB2577203 A GB 2577203A
Authority
GB
United Kingdom
Prior art keywords
actuator
buckle
shape memory
memory alloy
bimorph
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB1917208.9A
Other versions
GB201917208D0 (en
GB2577203B (en
Inventor
A Miller Mark
E Myers Dean
W Davis Michael
K Behning Nathaniel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hutchinson Technology Inc
Original Assignee
Hutchinson Technology Inc
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 Hutchinson Technology Inc filed Critical Hutchinson Technology Inc
Priority to GB2206304.4A priority Critical patent/GB2602950B/en
Priority claimed from PCT/US2018/031256 external-priority patent/WO2018204888A1/en
Publication of GB201917208D0 publication Critical patent/GB201917208D0/en
Publication of GB2577203A publication Critical patent/GB2577203A/en
Application granted granted Critical
Publication of GB2577203B publication Critical patent/GB2577203B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F03G7/061—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element
    • F03G7/0614—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element using shape memory elements
    • F03G7/06143—Wires
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F03G7/064—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by its use
    • F03G7/0646—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by its use for pumping or compressing fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F03G7/066—Actuator control or monitoring
    • F03G7/0665—Actuator control or monitoring controlled displacement, e.g. by using a lens positioning actuator
    • 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
    • G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
    • 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
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0007—Movement of one or more optical elements for control of motion blur
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0046—Movement of one or more optical elements for zooming
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0053—Driving means for the movement of one or more optical element
    • G03B2205/0076—Driving means for the movement of one or more optical element using shape memory alloys

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lens Barrels (AREA)

Abstract

SMA actuators and related methods are described. One embodiment of an actuator includes a base; a plurality of buckle arms; and at least a first shape memory alloy wire coupled with a pair of buckle arms of the plurality of buckle arms. Another embodiment of an actuator includes a base and at least one bimorph actuator including a shape memory alloy material. The bimorph actuator attached to the base.

Claims (39)

What is claimed is:
1. An actuator including: a base; a plurality of buckle arms; and at least a first shape memory alloy wire coupled with a pair of buckle arms of the plurality of buckle arms.
2. The actuator of claim 1, wherein the pair of buckle arms of the plurality of buckle arms are coupled together with a center portion.
3. The actuator of claim 2, wherein the pair of buckle arms are configured to move in a positive z-direction when the shape alloy wire is actuated.
4. The actuator of claim 1, wherein a first end of the shape memory alloy wire is attached to first buckle arm of the pair of buckle arms and a second end of the shape memory alloy wire is attached to a second buckle arm.
5. The actuator of claim 4, wherein the shape memory allow wire is attached to the first buckle arm by a first crimp and is attached to the second buckle arm by a second crimp.
6. The actuator of claim 2, wherein the center portion is configured to receive a portion of a lens carriage.
7. The actuator of claim 1 included in an autofocus system.
8. The actuator of claim 1 configured as a micro-fluidic pump.
9. An autofocus system including more than one actuator according to claim 1.
10. A micro-fluidic pump including more than one actuator according to claim 1.
11. An actuator including: a base; and at least one bimorph actuator including an shape memory alloy material, the bimorph actuator attached to the base.
12. The actuator of claim 11, wherein a first end of the shape memory alloy material is attached to a first end of the bimorph actuator and a second end is attached to a second end of the bimorph actuator.
13. The actuator of claim 12, wherein the second end of the bimorph actuator is configured to move in a z-direction when the shape memory alloy material is actuated.
14. The actuator of claim 11, wherein the shape memory alloy material is a shape memory allow wire.
15. The actuator of claim 11, wherein the shape memory allow material is a shape memory allow ribbon.
16. The actuator of claim 11 included in an autofocus system.
17. The actuator of claim 11 configured as a micro-fluidic pump.
18. An autofocus system including more than one actuator according to claim 11.
19. A micro-fluidic pump including more than one actuator according to claim II.
20. An actuator comprising: a beam; a first end pad electrically coupled to the beam; a second end pad electrically coupled to the beam; a center feed arranged between the first end pad and the second end pad; and a shape memory alloy material coupled with the first end pad, the second end pad, and the center feed, the center feed configured to be electrically isolated from the beam and electrically coupled to a contact layer.
21. An actuator comprising: a first buckle actuator; a second buckle actuator; and a lens carriage.
22. The actuator of claim 21, wherein the first buckle actuator is configured to move the lens carriage in a negative z-direction.
23. The actuator of claim 22, wherein the second buckle actuator is configured to move the lens carriage in a positive z-direction.
24. The actuator of claim 21, wherein the first buckle actuator includes a first base and the second buckle actuator includes a second base, the first buckle actuator includes a first pair of buckle arms and a second pair of buckle arms attached to the first base, the second buckle actuator includes a third pair of buckle arms and a fourth pair of buckle arms.
25. The actuator of claim 24, wherein the lens carriage is arranged between the first buckle actuator and the second buckle actuator.
26. The actuator of claim 25, wherein the first base and the second base face toward each other.
27. The actuator of claim 26, wherein the first buckle actuator and the second buckle actuator are configured to tilt the lens carriage with respect to an axis.
28. The actuator of claim 2, wherein the center portion is a laminated hammock.
29. A liquid lens comprising: a circuit including at least one shape memory alloy actuator; a shaping ring; a flexible membrane; a lens, and a liquid retaining ring, the lens configured on a side of the liquid retaining ring opposite the flexible membrane, the liquid retaining ring configured to retain liquid between the lens and the membrane, the shape memory alloy actuator configured to push the shaping ring located on the flexible membrane to change the shape of the membrane to shape the liquid.
30. The liquid lens of claim 29, wherein the shape memory alloy actuator includes a shape memory alloy wire.
31. The liquid lens of claim 29, wherein the shape memory alloy includes a shape memory alloy ribbon.
32. The actuator of claim 11 including at least four bimorph actuators, two of the bimorph actuators configured to move an object in a negative z-direction and two of the bimorph actuators configured to move an object in a positive z-direction.
33. The actuator of claim 11 including at least 8 bimorph actuators, the 8 bimorph actuators configured to move an object in a direction of 5 axis.
34. The actuator of claim 33 including 12 bimorph actuators.
35. The actuator of claim 33 including 4 side mounted bimorph actuators to move the object in an x direction and a y direction.
36. The actuator of claim 33 configured as a box bimorph autofocus.
37. The actuator of claim 35 including 2 top mounted bimorph actuators and 2 bottom mounted bimorph actuators.
38. The actuator of claim 35 including 4 top mounted bimorph actuators and 4 bottom mounted bimorph actuators.
39. The actuator of claim 11 including at least four bimorph actuators, two of the bimorph actuators configured to move an object in a x-direction and two of the bimorph actuators configured to move an object in a y-direction.
GB1917208.9A 2017-05-05 2018-05-04 Shape memory alloy actuators and methods thereof Active GB2577203B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2206304.4A GB2602950B (en) 2017-05-05 2018-05-04 Shape memory alloy actuators and methods thereof

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201762502568P 2017-05-05 2017-05-05
US201862650991P 2018-03-30 2018-03-30
PCT/US2018/031256 WO2018204888A1 (en) 2017-05-05 2018-05-04 Shape memory alloy actuators and methods thereof
US15/971,995 US10920755B2 (en) 2017-05-05 2018-05-04 Shape memory alloy actuators and methods thereof

Publications (3)

Publication Number Publication Date
GB201917208D0 GB201917208D0 (en) 2020-01-08
GB2577203A true GB2577203A (en) 2020-03-18
GB2577203B GB2577203B (en) 2022-08-03

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ID=69137287

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1917208.9A Active GB2577203B (en) 2017-05-05 2018-05-04 Shape memory alloy actuators and methods thereof

Country Status (2)

Country Link
CN (3) CN113589545B (en)
GB (1) GB2577203B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10920755B2 (en) 2017-05-05 2021-02-16 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11105319B2 (en) 2017-05-05 2021-08-31 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11306706B2 (en) 2017-05-05 2022-04-19 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
GB2600825A (en) * 2020-10-12 2022-05-11 Hutchinson Technology Shape memory alloy actuators and methods thereof
US11333134B2 (en) 2017-05-05 2022-05-17 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11448853B2 (en) 2017-05-05 2022-09-20 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11815794B2 (en) 2017-05-05 2023-11-14 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11859598B2 (en) 2021-06-10 2024-01-02 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11982263B1 (en) 2023-05-02 2024-05-14 Hutchinson Technology Incorporated Shape metal alloy (SMA) bimorph actuators with reduced wire exit angle
US12510061B2 (en) 2023-04-12 2025-12-30 Hutchinson Technology Incorporated Shape memory alloy (SMA) bimorph actuators and methods for manufacturing the same

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CN115997156A (en) * 2020-06-09 2023-04-21 哈钦森技术股份有限公司 Shape memory alloy actuator and method thereof
CN115722781A (en) * 2021-09-01 2023-03-03 广东海德亚科技有限公司 Shape memory alloy wire welding assembly, welding method and fixed connection product

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Cited By (22)

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Publication number Priority date Publication date Assignee Title
US11815794B2 (en) 2017-05-05 2023-11-14 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US12055844B2 (en) 2017-05-05 2024-08-06 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11199183B2 (en) 2017-05-05 2021-12-14 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11306706B2 (en) 2017-05-05 2022-04-19 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US12422733B2 (en) 2017-05-05 2025-09-23 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11333134B2 (en) 2017-05-05 2022-05-17 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11448853B2 (en) 2017-05-05 2022-09-20 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US12372858B2 (en) 2017-05-05 2025-07-29 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11668288B2 (en) 2017-05-05 2023-06-06 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11867160B2 (en) 2017-05-05 2024-01-09 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11105319B2 (en) 2017-05-05 2021-08-31 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US12248233B2 (en) 2017-05-05 2025-03-11 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11686294B2 (en) 2017-05-05 2023-06-27 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US11892759B2 (en) 2017-05-05 2024-02-06 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US10920755B2 (en) 2017-05-05 2021-02-16 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US12049877B2 (en) 2017-05-05 2024-07-30 Hutchinson Technology Incorporated Shape memory alloy actuator
GB2600825B (en) * 2020-10-12 2023-01-11 Hutchinson Technology Shape memory alloy actuators and methods thereof
GB2600825A (en) * 2020-10-12 2022-05-11 Hutchinson Technology Shape memory alloy actuators and methods thereof
US11859598B2 (en) 2021-06-10 2024-01-02 Hutchinson Technology Incorporated Shape memory alloy actuators and methods thereof
US12510061B2 (en) 2023-04-12 2025-12-30 Hutchinson Technology Incorporated Shape memory alloy (SMA) bimorph actuators and methods for manufacturing the same
US11982263B1 (en) 2023-05-02 2024-05-14 Hutchinson Technology Incorporated Shape metal alloy (SMA) bimorph actuators with reduced wire exit angle
US12480481B2 (en) 2023-05-02 2025-11-25 Hutchinson Technology Incorporated Shape memory alloy (SMA) bimorph actuators with reduced wire exit angle

Also Published As

Publication number Publication date
GB201917208D0 (en) 2020-01-08
CN110709757B (en) 2022-11-22
CN113589545B (en) 2023-11-21
GB2577203B (en) 2022-08-03
CN113589545A (en) 2021-11-02
CN110709757A (en) 2020-01-17
CN113589544A (en) 2021-11-02
CN113589544B (en) 2023-06-16

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