GB2591646A - Tuneable optical device - Google Patents
Tuneable optical device Download PDFInfo
- Publication number
- GB2591646A GB2591646A GB2103203.2A GB202103203A GB2591646A GB 2591646 A GB2591646 A GB 2591646A GB 202103203 A GB202103203 A GB 202103203A GB 2591646 A GB2591646 A GB 2591646A
- Authority
- GB
- United Kingdom
- Prior art keywords
- component
- optical device
- tuneable
- coupled
- tuneable optical
- 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
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
- G02B7/08—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
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lens Barrels (AREA)
- Adjustment Of Camera Lenses (AREA)
Abstract
Broadly speaking, embodiments of the present techniques provide an optical device comprising a deformable lens in which one or more SMA actuator wires may be used for tuning the focal length of the device and/or for adjusting the light beam direction to achieve optical image stabilisation.
Claims (24)
1. A tuneable optical device comprising : a first component and a second component, wherein the first component is moveable relative to the second component; a deformable lens provided between the first component and the second component; and a first actuator comprising: at least one shape memory alloy (SMA) actuator wire coupled to the first component and arranged to, on contraction, drive movement of the first component whereby the deformable lens is deformed to provide autofocus and/or optical image stabilisation.
2. The tuneable optical device as claimed in claim 1 wherein the first component is a moveable component and the second component is a static component, and wherein the deformable lens is deformed to provide at least optical image stabilisation.
3. The tuneable optical device as claimed in claim 1 comprising: a body relative to which each of the first and second components are movable: and a second actuator comprising : at least one SMA actuator wire coupled to the second component and arranged to, on contraction, drive movement of the second component, whereby the deformable lens is deformed and/or displaced by the movement of the first and second components.
4. The tuneable optical device as claimed in claim 3, wherein deformable lens is configured to be deformed and displaced by the movement of first and second components to enable the provision of optical zoom.
5. The tuneable optical device as claimed in claim 3 or 4, wherein the at least one SMA actuator wire of the second actuator is also coupled to the first component.
6. The tuneable optical device as claimed in any one of claims 1 to 5 wherein the first and/or second actuators each comprises a plurality of SMA actuator wires arranged at an acute angle to an optical axis of the device.
7. The tuneable optical device as claimed in claim 6 wherein, on contraction, the or each plurality of SMA actuator wires apply a force in the same direction to the component to which they are coupled.
8. The tuneable optical device as claimed in claim 6 wherein, on contraction, the or each plurality of SMA actuator wires comprises two groups of SMA actuator wires of the actuator that apply a force in opposite directions to the component to which they are coupled.
9. The tuneable optical device as claimed in any preceding claim comprising: control circuitry configured to supply a drive signal to at least one of the SMA actuator wires to tilt the component to which it is coupled relative to the other component to provide optical image stabilisation.
10. The tuneable optical device as claimed in any one of claims 1 to 5 wherein the first and/or second actuators each comprise eight lengths of SMA actuator wire inclined with respect to an optical axis of the device, with a pair of lengths of SMA actuator wire provided on each of four sides of the component to which they are coupled, where each pair of lengths comprises a first length that is coupled to a first corner of a side of the component and second length that is coupled to a second corner of the side of the component.
11. The tuneable optical device as claimed in claim 10 wherein, in a given actuator, two lengths of SMA actuator wire are coupled to each corner and provided on adjacent sides of the component, and are electrically connected together.
12. The tuneable optical device as claimed in claim 11 wherein, in a given actuator, on contraction, the eight lengths of SMA actuator wire apply a force to the component in the same direction along the optical axis.
13. The tuneable optical device as claimed in claim 12 wherein, in a given actuator, on contraction, two groups of four lengths of SMA actuator wire apply a force to the component in opposite directions along the optical axis.
14. The tuneable optical device as claimed in any one of claims 11 to 13 comprising : control circuitry configured to supply a drive signal to at least the two lengths of SMA actuator wire coupled to one of the four corners of the first and/or second component to tilt the component relative to the other component and provide optical image stabilisation.
15. The tuneable optical device as claimed in any one of claims 11 to 14 comprising : control circuitry configured to supply drive signals to at least the two lengths of SMA actuator wire coupled to one of the four corners of the first and/or second component to move the component.
16. The tuneable optical device as claimed in claim 15 wherein the control circuitry is configured to supply drive signals to at least one group of four lengths of SMA actuator wire to move the first and/or second component.
17. The tuneable optical device as claimed in any one of claims 6 to 8 wherein the first and/or second components each comprises a set of through-holes, through each of which at least one of the plurality of wires coupled to the other component passes.
18. The tuneable optical device as claimed in claim 3 wherein : the first actuator is configured to move the first component in directions perpendicular to the optical axis to move at least a portion of the deformable lens to enable the provision of optical image stabilisation; and the second actuator is configured to move the second component along the optical axis to distort the deformable lens to enable the provision of autofocus.
19. The tuneable optical device as claimed in claim 18 wherein the first actuator comprises: four SMA actuator wires, each wire coupled to a corner of the first component and arranged substantially parallel to a side of the first component and substantially perpendicular to the optical axis of the device
20. The tuneable optical device as claimed in any preceding claim wherein each of the first and/or second components comprises a rigid portion and a flexible portion that flexes when the deformable lens is deformed, thereby changing at least a focal length of the device
21. The tuneable optical device as claimed in claim 20, wherein the flexible portion of each of the first and/or second component extends across an aperture in the rigid portion, through which the deformable lens is configured to protrude when it is deformed .
22. The tuneable optical device as claimed in any preceding claim wherein each of the first and/or second components are plates.
23. The tuneable optical device as claimed in any preceding claim wherein one or more of the first component, second component and deformable lens is transparent.
24. The tuneable optical device as claimed in any preceding claim wherein the deformable lens comprises any one of: a liquid, a soft silicone material, a soft polymer, and a gel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1812809.0A GB2576173A (en) | 2018-08-07 | 2018-08-07 | Tuneable fluid lens |
| PCT/GB2019/052226 WO2020030915A1 (en) | 2018-08-07 | 2019-08-07 | Tuneable optical device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB202103203D0 GB202103203D0 (en) | 2021-04-21 |
| GB2591646A true GB2591646A (en) | 2021-08-04 |
| GB2591646B GB2591646B (en) | 2022-11-02 |
Family
ID=63518404
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1812809.0A Withdrawn GB2576173A (en) | 2018-08-07 | 2018-08-07 | Tuneable fluid lens |
| GB2103203.2A Active GB2591646B (en) | 2018-08-07 | 2019-08-07 | Tuneable optical device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1812809.0A Withdrawn GB2576173A (en) | 2018-08-07 | 2018-08-07 | Tuneable fluid lens |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN112823305A (en) |
| GB (2) | GB2576173A (en) |
| WO (1) | WO2020030915A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112616000A (en) * | 2020-12-31 | 2021-04-06 | 南昌欧菲光电技术有限公司 | Driving device, camera module and electronic equipment |
| CN114911076A (en) * | 2021-02-07 | 2022-08-16 | 奥普托图尼股份公司 | Adjustable optical device |
| KR20230145930A (en) * | 2022-04-11 | 2023-10-18 | 넥스트렌즈 스위저랜드 아게 | Imaging optical system |
| WO2024134195A1 (en) | 2022-12-22 | 2024-06-27 | Cambridge Mechatronics Limited | Sma actuator assembly |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010022688A1 (en) * | 1998-05-28 | 2001-09-20 | Akira Kosaka | Image shake correction device for optical apparatus and optical apparatus having image shake correction device |
| KR20110015844A (en) * | 2009-08-10 | 2011-02-17 | 경북대학교 산학협력단 | Assembly of lens system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7646544B2 (en) * | 2005-05-14 | 2010-01-12 | Batchko Robert G | Fluidic optical devices |
| WO2013175197A1 (en) | 2012-05-25 | 2013-11-28 | Cambridge Mechatronics Limited | Shape memory alloy actuation apparatus |
| GB2602950B (en) * | 2017-05-05 | 2022-10-26 | Hutchinson Technology | Shape memory alloy actuators and methods thereof |
| GB2577203B (en) * | 2017-05-05 | 2022-08-03 | Hutchinson Technology | Shape memory alloy actuators and methods thereof |
| US10852458B2 (en) * | 2017-06-19 | 2020-12-01 | Tdk Taiwan Corp. | Camera device |
| CA3069149A1 (en) * | 2017-07-07 | 2019-01-10 | University Of Utah Research Foundation | Low-voltage microfluidic actuator driven by tension modification |
| JP2021505936A (en) * | 2017-12-04 | 2021-02-18 | オプトチューン コンシューマー アーゲー | Optical zoom device with focal tunable lens core |
-
2018
- 2018-08-07 GB GB1812809.0A patent/GB2576173A/en not_active Withdrawn
-
2019
- 2019-08-07 GB GB2103203.2A patent/GB2591646B/en active Active
- 2019-08-07 WO PCT/GB2019/052226 patent/WO2020030915A1/en active Application Filing
- 2019-08-07 CN CN201980065859.1A patent/CN112823305A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010022688A1 (en) * | 1998-05-28 | 2001-09-20 | Akira Kosaka | Image shake correction device for optical apparatus and optical apparatus having image shake correction device |
| KR20110015844A (en) * | 2009-08-10 | 2011-02-17 | 경북대학교 산학협력단 | Assembly of lens system |
Non-Patent Citations (2)
| Title |
|---|
| HYUNG-MIN SON ET AL: "New variable focal liquid lens system using antagonistic-type SMA actuator", AUTONOMOUS ROBOTS AND AGENTS, 2009, ICARA 2009. 4TH INTERNATIONAL CONFERENCE ON IEEE, PISCATAWAY, NJ, USA, 10 February 2009 (2009-02-10), pages 476-479, ISBN: 978-1-4244-2712-3 abstract II Design of ne * |
| NAZMUL HASAN ET AL: "Large aperture tunable-focus liquid lens using shape memory alloy spring", OPTICS LEN, vol. 24, no. 12, 8 June 2016 (2016-06-08), page 13334, DOI: 10.1364/OE.24.013334 abstract 2.Basic Lens Configuration figures 1,2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2591646B (en) | 2022-11-02 |
| GB202103203D0 (en) | 2021-04-21 |
| GB2576173A (en) | 2020-02-12 |
| WO2020030915A1 (en) | 2020-02-13 |
| GB201812809D0 (en) | 2018-09-19 |
| CN112823305A (en) | 2021-05-18 |
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