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91. 发明申请

WO2022263811A1 VOICE COIL MOTOR ACTUATOR ASSEMBLY 审中-公开
公开(公告)号：WO2022263811A1
公开(公告)日：2022-12-22
申请号：PCT/GB2022/051496
申请日：2022-06-14
申请人： CAMBRIDGE MECHATRONICS LIMITED
发明人： BROWN, Andrew Benjamin Simpson
IPC分类号： G02B27/64 , G02B7/08
摘要： An actuator assembly comprising a support structure, and a movable part movable relative to the support structure across a range of movement in two orthogonal directions perpendicular to a primary axis extending through the movable part. The assembly further comprising four voice coil motors (VCMs) arranged between the movable part and the support structure, and a controller configured to unidirectionally drive each of the four VCMs, thereby capable of producing forces for moving the movable part relative to the support structure to any position in said range of movement without applying any net torque to the movable part in the plane of the two orthogonal directions. The four VCMs arranged such that none of the forces produced by each of the four VCMs can be collinear.

92. 发明申请

WO2022254220A1 ACTUATOR ARRANGEMENT 审中-公开
公开(公告)号：WO2022254220A1
公开(公告)日：2022-12-08
申请号：PCT/GB2022/051404
申请日：2022-06-01
申请人： CAMBRIDGE MECHATRONICS LIMITED
发明人： BROWN, Andrew Benjamin Simpson , HOWARTH, James , BUNTING, Stephen Matthew , HART, Oliver
IPC分类号： G02B7/09 , G02B13/00 , G02B27/64 , G03B17/17
摘要： An actuator arrangement for use in a camera is disclosed. The camera comprises two or more camera elements including an image sensor and one or more optical elements for forming, or aiding forming of, an image of an object on the image sensor. The actuator arrangement comprises: a first part defining a first axis; a first actuator for providing a first type of movement of one or more of the camera elements relative to the first part; a second actuator for providing a second, different type of movement of one or more of the camera elements relative to the first part; a controller configured to (a) cause the first actuator to move one or more of the camera elements so as to provide a first optical image stabilisation (OIS) effect, and (b) cause the second actuator to move one or more of the camera elements so as to provide a second OIS effect. The first and second OIS effects combine to provide an overall OIS effect that is greater than either of the first and second OIS effects.

93. 发明申请

WO2022248876A1 SMA ACTUATOR ASSEMBLY 审中-公开
公开(公告)号：WO2022248876A1
公开(公告)日：2022-12-01
申请号：PCT/GB2022/051355
申请日：2022-05-27
申请人： CAMBRIDGE MECHATRONICS LIMITED
发明人： HOWARTH, James , BROWN, Andrew Benjamin Simpson , EDDINGTON, Robin , FARMER, Geoffrey , BUNTING, Stephen Matthew
IPC分类号： F03G7/06 , F16H1/32 , F16H49/00
摘要： An SMA actuator assembly (1) comprising: a support structure (10), a rotating part (40) arranged to rotate about a rotation axis (R); a movable part (20) arranged to move in a plane perpendicular to the rotation axis and along a boundary (45) of the rotating part, wherein one of the rotating part and the movable part surrounds the other of the rotating part and the movable part in the plane perpendicular to the rotation axis; and three or more SMA wires (30) arranged, on contraction, to move the movable part along the boundary of the rotating part, such that contact between the movable part and the rotating part drives continuous rotation of the rotating part about the rotation axis, wherein the arrangement of the three or more SMA wires is capable of applying a torque to the movable part.

94. 发明申请

WO2022214831A1 ACTUATOR FABRICATION 审中-公开
公开(公告)号：WO2022214831A1
公开(公告)日：2022-10-13
申请号：PCT/GB2022/050894
申请日：2022-04-08
申请人： CAMBRIDGE MECHATRONICS LIMITED
发明人： HART, Oliver , AUCHOYBUR, Kiran , BUNTING, Stephen Matthew , CARR, Joshua , VAN WYK, Peter
IPC分类号： G03B30/00 , G03B3/10
摘要： A method of forming an actuator assembly (2, 30) includes crimping a first shape memory alloy wire (12) to a first patterned sheet (14). The first patterned sheet (14) includes a first frame (15), a first feature (16) supporting or defining a first crimp head (17) and connected to the first frame (15) by one or more first connecting members (18), and a second feature (19) supporting or defining a second crimp head (20) and connected to the first frame (15) by one or more second connecting members (21). The first shape memory alloy wire (12) is crimped between the first and second crimp heads (17, 20). The method also includes crimping a second shape memory alloy wire (13) to a second patterned sheet (22). The second patterned sheet (22) includes a second frame (23), a third feature (24) supporting a third crimp head (25) and connected to the second frame (23) by one or more third connecting members (26), and a fourth feature (27) supporting or defining a fourth crimp head (28) and connected to the second frame (23) by one or more fourth connecting members (29). The second shape memory alloy wire (13) is crimped between the third and fourth crimp heads (25, 28). The method also includes assembling the first patterned sheet (14), the second patterned sheet (22), a first part (3) and a second part (4) to form a first assembly. The first assembly is configured such that the first and third features (16, 25) are attached to the first part (3), the second and fourth features (19, 27) are attached to the second part (4), and the first part (3) is coupled to the second part (4) by a bearing arrangement (11) configured to couple a rotation of the second part (4) relative to the first part (3) about a primary axis to a translation of the second part relative to the first part along the primary axis. The method also includes severing each of the first and second connecting members (18, 21) to detach the first frame (15) and severing each of the third and fourth connecting members (26, 29) to detach the second frame (23). (Figure 4)

95. 发明申请

WO2022208066A1 SMA ACTUATOR ASSEMBLY 审中-公开
公开(公告)号：WO2022208066A1
公开(公告)日：2022-10-06
申请号：PCT/GB2022/050775
申请日：2022-03-29
申请人： CAMBRIDGE MECHATRONICS LIMITED
发明人： HEIJNE, Nicolas , BROWN, Andrew Benjamin Simpson , HOWARTH, James , SOUTH, Adam
IPC分类号： F03G7/06 , G02B7/02 , G03B3/10 , F03G7/06143 , F03G7/067 , G02B27/646 , G03B13/36 , G03B15/05 , G03B2205/0007 , G03B2205/0046 , G03B2205/0076
摘要： A shape memory alloy (SMA) actuator assembly (1) comprising: a movable part (100); a support structure (3); one or more SMA wires arranged, on contraction, to tilt the movable part relative to the support structure about two orthogonal axes that are perpendicular to a primary axis (O) of the support structure; and axial translation constrainers (16) configured to limit axial translation of the movable part relative to the support structure along the primary axis of the support structure, wherein the axial translation constrainers are arranged to prevent all points of the movable part from simultaneously reaching their most extreme position along the primary axis of the support structure allowed by the range of possible tilt of the movable part relative to the support structure.

96. 发明申请

WO2022175681A1 METHOD 审中-公开
公开(公告)号：WO2022175681A1
公开(公告)日：2022-08-25
申请号：PCT/GB2022/050454
申请日：2022-02-18
申请人： CAMBRIDGE MECHATRONICS LIMITED
发明人： BROWN, Andrew Benjamin Simpson
IPC分类号： A61F9/007
摘要： A method of controlling a flow control device (100). The device includes a fluid path (104), a movable element (101), and a shape memory alloy (SMA) wire (103) for moving the movable element (101) in one direction or sense so as to cause the resistance of the fluid path (104) to increase or decrease. The device (100) is configured such that the movable element (101) does not move when no energy is supplied to the device (100). The method involves directing radiation (106) at an area of the device (100) so as to preferentially heat a portion of the SMA wire (103) and hence cause the portion of the SMA wire (103) to contract by a relatively large amount while another portion of the SMA wire (103) does not contract or contracts by a relatively small amount, wherein the radiation (106) is controlled so as to control the size of the portion of the SMA wire (103) that is preferentially heated and hence the resistance of the fluid path (104).

97. 发明申请

WO2022136886A1 ACTUATOR 审中-公开
公开(公告)号：WO2022136886A1
公开(公告)日：2022-06-30
申请号：PCT/GB2021/053431
申请日：2021-12-23
申请人： CAMBRIDGE MECHATRONICS LIMITED
发明人： BROWN, Andrew Benjamin Simpson , LANGHORNE, Robert , ARMSTRONG, Samuel
IPC分类号： F03G7/06 , G02B7/02 , G03B3/10
摘要： An apparatus comprises a support structure (12), a movable element (11) and eight SMA wires (40) connected between the support structure and the movable element so as to enable the movable element to be moved relative to the support structure with at least three degrees of freedom. Two of the SMA wires are located on each of four sides, the four sides extending in a loop around a primary axis. The two SMA wires on each side include an inner SMA wire and an outer SMA wire. The outer SMA wire is, on average, further from the primary axis than the inner SMA wire. On contraction, a first group of four of the SMA wires each provide a force on the movable element with a component in a first direction along the primary axis, and a second group of the other four of the SMA wires each provide a force on the movable element with a component in a second, opposite direction along the primary axis. The first and second groups each include two inner SMA wires and two outer SMA wires.

98. 发明申请

WO2022136885A1 ACTUATORS 审中-公开
公开(公告)号：WO2022136885A1
公开(公告)日：2022-06-30
申请号：PCT/GB2021/053430
申请日：2021-12-23
申请人： CAMBRIDGE MECHATRONICS LIMITED
发明人： BROWN, Andrew Benjamin Simpson
IPC分类号： F03G7/06 , G02B7/02 , G03B3/10
摘要： An actuator (18) includes a first part (3), a second part (2) and eight shape memory alloy, SMA, wires (41, …, 48) connected between the first part (3) and the second part (2) so as to enable the second part (2) to be moved relative to the first part (3) with at least two degrees of freedom. Two of the SMA wires (41, …, 48) are located on each of four sides (s1, …, s4). The four sides (s1, …, s4) extend in a loop around a primary axis (z). On contraction, a first group (41, 43, 45, 47) of four of the SMA wires each provide a force on the second part (2) with a component in a first direction along the primary axis (z), and a second group (42, 44, 46, 48) of the other four of the SMA wires each provide a force on the second part (2) with a component in a second, opposite direction along the primary axis (z). Each of the eight SMA wires (41, …, 48) is configured such that a length perpendicular to the primary axis (z) is foreshortened relative to a length (l1, …, l4) of a corresponding one of the four sides (s1, …, s4).

99. 发明申请

WO2022129894A1 COMPUTER-IMPLEMENTED METHOD OF GENERATING PWM CONTROL SIGNALS, AND CORRESPONDING COMPUTER PROGRAM, COMPUTER-READABLE STORAGE MEDIUM AND APPARATUS 审中-公开
公开(公告)号：WO2022129894A1
公开(公告)日：2022-06-23
申请号：PCT/GB2021/053292
申请日：2021-12-14
申请人： CAMBRIDGE MECHATRONICS LIMITED
发明人： EASTON, Mark , AVERY, Chris
IPC分类号： H04N5/232 , H04N5/225
摘要： A computer-implemented method driving an actuator component that drives movement of a movable part relative to a support structure, an image sensor fixed relative to the movable part or the support structure. The image sensor carries out CDS so as to read, offset in time by a sampling period, a reference signal and a light-sensing signal, and outputs a sync signal prior to CDS. The method comprises receiving the sync signal; generating PWM control signals at a PWM frequency substantially equal to an integer multiple of the reciprocal of the sampling period; during a sensing interval, suspending generating PWM control signals to drive the actuator component; and scheduling the sensing interval to start a time delay after receiving the sync signal, such that the sensing interval overlaps with both or neither of a duration of reading the reference signal and a substantially equal duration of reading the light-sensing signal by the image sensor.

100. 发明申请

WO2022106856A1 SMA ACTUATOR ASSEMBLY 审中-公开
公开(公告)号：WO2022106856A1
公开(公告)日：2022-05-27
申请号：PCT/GB2021/053030
申请日：2021-11-23
申请人： CAMBRIDGE MECHATRONICS LIMITED
发明人： HOWARTH, James , EDDINGTON, Robin
IPC分类号： G02B7/08 , G02B27/64
摘要： A shape memory alloy (SMA) actuator assembly comprising: a support structure; a movable part that is movable relative to the support structure across a range of movement in a plane; an anti-rotation mechanism configured to constrain rotation of the movable part relative to the support structure about any axis perpendicular to the plane; and a total of three SMA wires that are individually controllable so as to move the movable part relative to the support structure to any position in said range of movement.

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