GB2610532A - Shape memory alloy actuators and methods thereof - Google Patents

Shape memory alloy actuators and methods thereof Download PDF

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Publication number
GB2610532A
GB2610532A GB2218440.2A GB202218440A GB2610532A GB 2610532 A GB2610532 A GB 2610532A GB 202218440 A GB202218440 A GB 202218440A GB 2610532 A GB2610532 A GB 2610532A
Authority
GB
United Kingdom
Prior art keywords
buckler
assembly
module
tilt
ois
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.)
Pending
Application number
GB2218440.2A
Other versions
GB202218440D0 (en
Inventor
A Miller Mark
K Behning Nathaniel
E Myers Dean
W Davis Michael
N Ruzicka Ryan
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
Priority claimed from US17/339,797 external-priority patent/US11448853B2/en
Application filed by Hutchinson Technology Inc filed Critical Hutchinson Technology Inc
Publication of GB202218440D0 publication Critical patent/GB202218440D0/en
Publication of GB2610532A publication Critical patent/GB2610532A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F03G7/066—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
    • 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
    • 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

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 (30)

1. A buckler module tilt OIS assembly comprising: a top buckler assembly configured to provide a yaw axis motion for dynamic tilt tuning capability; and a bottom buckler assembly configured to provide a pitch axis motion for dynamic tilt tuning capability.
2. The buckler module tilt OIS assembly of claim 1, wherein the top buckler assembly includes a two-wire Buckler actuator.
3. The buckler module tilt OIS assembly of claim 1, wherein the bottom buckler assembly includes a two-wire Buckler actuator.
4. The buckler module tilt OIS assembly of claim 1, wherein the buckler module tilt OIS assembly is operable to provide two-axis camera module OIS tilt to move a moving mass to move to large tilt angles up to ±5°.
5. The buckler module tilt OIS assembly of claim 4, wherein the moving mass includes an auto focus assembly, a sensor circuit PCB, and a module circuit PCB.
6. The buckler module tilt OIS assembly of claim 4, wherein the auto focus assembly is fixed to the top buckler assembly via adhesive.
7. The buckler module tilt OIS assembly of claim 1, further comprising an auto focus AF assembly, a sensor circuit PCB, and a module circuit PCB positioned between the top buckler assembly and the bottom buckler assembly.
8. The buckler module tilt OIS assembly of claim 7, wherein the top buckler assembly is configured to receive the AF assembly and the sensor circuit PCB.
9. The buckler module tilt OIS assembly of claim 1, wherein the buckler module tilt OIS assembly is configured to fit in a footprint of up to 14.5 mm in length by up to 14.5 mm in width.
10. The buckler module tilt OIS assembly of claim 1, wherein the top buckler assembly includes one or more buckler arms, each buckler arm is positioned to cause the top buckler assembly to generate a yaw axis motion.
11. The buckler module tilt OIS assembly of claim 10, wherein the bottom buckler assembly includes one or more buckler arms, each positioned to cause the bottom buckler assembly to generate a pitch axis motion.
12. The buckler module tilt OIS assembly of claim 11, wherein the top buckler assembly and the bottom buckler assembly are operable to push away from each other to provide dynamic tilting of the buckler module tilt OIS assembly.
13. The buckler module tilt OIS assembly of claim 1, wherein the push force of the top buckler assembly and the bottom buckler assembly is between 20-30 grams.
14. The buckler module tilt OIS assembly of claim 1, wherein the top buckler assembly includes a housing with a top spring, a top AF carriage, a flexible sensor circuit, and a yaw tilt sub- assembly.
15. The buckler module tilt OIS assembly of claim 14, wherein the yaw tilt sub-assembly includes a tilt sub-assembly buckler frame, a stainless-steel (SST) buckler frame, more than one slide bearings, at least one SMA wire, and an SST slide base.
16. The buckler module tilt OIS assembly of claim 1, wherein the bottom buckler assembly includes a housing with a bottom spring, a bottom AF carriage, and a pitch tilt sub-assembly.
17. The buckler module tilt OIS assembly of claim 16, wherein the pitch tilt sub-assembly includes a tilt sub-assembly buckler frame, a stainless-steel (SST) buckler frame, more than one slide bearings, at least one SMA wire, and an SST slide base.
18. The buckler module tilt OIS assembly of claim 1, comprising a single housing and a base cap, the base cap configured to mate with the single housing.
19. The buckler module tilt OIS assembly of claim 18, comprising a flexible printed circuit configured to be disposed on the outer surface of the single housing.
20. The buckler module tilt OIS assembly of claim 19, wherein the flexible printed circuit is configured to include one or more position sensors.
21. The buckler module tilt OIS assembly of claim 19, comprising a module and a flexible sensor circuit electrically coupled with the module.
22. The buckler module tilt OIS assembly of claim 21, wherein the flexible sensor circuit includes a first set of traces configured to extend from a first pad and a second set of traces configured to extend from a second pad.
23. The buckler module tilt OIS assembly of claim 21, wherein the flexible sensor circuit includes a first set of traces configured to be disposed on the outside of the first pad and the second pad, respectively.
24. The buckler module tilt OIS assembly of claim 21, wherein the flexible sensor circuit includes a first set of traces configured to be disposed on the inside of the first pad and the second pad, respectively.
25. The buckler module tilt OIS assembly of claim 19, wherein the flexible sensor circuit electrically includes one or more bends.
26. A method of manufacturing a buckler module tilt OIS assembly comprising: providing a top buckler assembly configured to provide a yaw axis motion for dynamic tilt tuning capability; mounting an auto focus assembly to the top buckler assembly; mounting a sensor circuit PCB to the auto focus assembly at a side opposite of the top buckler assembly; thereby facilitating sensor circuit connections between the sensor circuit PCB and the auto focus assembly with a sensor bracket; coupling a bottom buckler assembly to the module circuit PCB opposite the auto focus assembly; and attaching the bottom buckler assembly to the top buckler assembly along the fixed perimeter.
27. The method of claim 26, wherein the top buckler assembly includes a four-wire Buckler actuator.
28. The method of claim 26, wherein the bottom buckler assembly includes a four- wire Buckler actuator.
29. A buckler module tilt OIS assembly comprising: a top buckler assembly configured to provide a pitch axis motion for dynamic tilt tuning capability; and a bottom buckler assembly configured to provide a yaw axis motion for dynamic tilt tuning capability.
30. A buckler module tilt OIS assembly comprising: a four-wire buckler configured to provide a yaw axis motion for dynamic tilt tuning capability and to provide a pitch axis motion for dynamic tilt tuning capability; and a flexible sensor circuit.
GB2218440.2A 2020-06-09 2021-06-07 Shape memory alloy actuators and methods thereof Pending GB2610532A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US202063036919P 2020-06-09 2020-06-09
US17/339,797 US11448853B2 (en) 2017-05-05 2021-06-04 Shape memory alloy actuators and methods thereof
PCT/US2021/036211 WO2021252374A1 (en) 2020-06-09 2021-06-07 Shape memory alloy actuators and methods thereof

Publications (2)

Publication Number Publication Date
GB202218440D0 GB202218440D0 (en) 2023-01-25
GB2610532A true GB2610532A (en) 2023-03-08

Family

ID=78845864

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2218440.2A Pending GB2610532A (en) 2020-06-09 2021-06-07 Shape memory alloy actuators and methods thereof

Country Status (6)

Country Link
JP (1) JP2023530250A (en)
KR (1) KR20230021138A (en)
CN (1) CN115997156A (en)
GB (1) GB2610532A (en)
TW (1) TW202219621A (en)
WO (1) WO2021252374A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180052381A1 (en) * 2015-05-05 2018-02-22 Actuator Solutions GmbH Tilt module subassembly and optical image stabilizer comprising it
US20180171991A1 (en) * 2016-12-16 2018-06-21 Hutchinson Technology Incorporated Sensor Shift Structures In Optical Image Stabilization Suspensions
US20190136839A1 (en) * 2017-05-05 2019-05-09 Hutchinson Technology Incorporated Shape Memory Alloy Actuators And Methods Thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180052381A1 (en) * 2015-05-05 2018-02-22 Actuator Solutions GmbH Tilt module subassembly and optical image stabilizer comprising it
US20180171991A1 (en) * 2016-12-16 2018-06-21 Hutchinson Technology Incorporated Sensor Shift Structures In Optical Image Stabilization Suspensions
US20190136839A1 (en) * 2017-05-05 2019-05-09 Hutchinson Technology Incorporated Shape Memory Alloy Actuators And Methods Thereof

Also Published As

Publication number Publication date
JP2023530250A (en) 2023-07-14
GB202218440D0 (en) 2023-01-25
KR20230021138A (en) 2023-02-13
CN115997156A (en) 2023-04-21
TW202219621A (en) 2022-05-16
WO2021252374A1 (en) 2021-12-16

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