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公开(公告)号：US20250097577A1
公开(公告)日：2025-03-20
申请号：US18294424
申请日：2022-08-02
Applicant: CAMBRIDGE MECHATRONICS LIMITED
Inventor： Andrew Benjamin Simpson Brown , Robin Eddington , Robert Langhorne
Abstract: An actuator assembly comprising: a support structure (4) comprising a first printed circuit board, PCB (10); an image sensor assembly (12) comprising a second PCB (9) and an image sensor (6) having a light-sensitive region (7), wherein the image sensor assembly (12) is supported on the support structure (4) to allow movement of the image sensor assembly (12) relative to the support structure (4); and an electrical interconnector (51) configured to electrically connect the first PCB (10) to the second PCB (9); wherein the first PCB (10) and the second PCB overlap (9) when viewed along at least one direction in the plane in which the first PCB (10) extends.
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公开(公告)号：US20240026866A1
公开(公告)日：2024-01-25
申请号：US18265112
申请日：2021-12-06
Applicant: CAMBRIDGE MECHATRONICS LIMITED
Inventor： Robert Langhorne , Robin Eddington , James Howarth , Andrew Benjamin Simpson Brown
CPC classification number: F03G7/06143 , G02B27/646 , G03B13/36 , G03B5/00 , G03B2205/0007 , G03B2205/0076
Abstract: A shape memory alloy (SMA) actuator assembly comprising: a support structure (211); a moveable part (213) moveable relative to the support structure; at least one SMA wire (202) having a first portion and a second portion respectively attached to the support structure and the moveable part, the said SMA wire is configured to, on contraction, drive movement in the moveable part at least in a primary axis along which the shortest side of the SMA actuator assembly extends; an intermediate component (220) engaging the SMA wire at a location between the first and second portions, the second portion of the SMA wire being arranged at an oblique angle to both the primary axis and the first portion of the SMA wire.
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公开(公告)号：US20230204900A1
公开(公告)日：2023-06-29
申请号：US17927310
申请日：2021-05-27
Applicant: CAMBRIDGE MECHATRONICS LIMITED
Inventor： Oliver Hart , Peter Van Wyk , Andrew Benjamin Simpson Brown , David Ooi , Joshua Carr
CPC classification number: G02B7/09 , F03G7/0665 , F03G7/06143 , G03B13/36 , G03B5/02 , G03B2205/0076
Abstract: The actuator assembly comprises a first part (102), a second part (110) and a helical bearing arrangement. The helical bearing arrangement is arranged to guide helical movement of the second part with respect to the first part around a helical axis H such that rotation of the second part around the helical axis is converted into helical movement of the second part. The first and second parts comprise respective stops (152, 162) that are arranged such that the stops are spaced from each other throughout an operating range of said helical movement of the second part relative to the first part. The stops are configured to engage if the second part is moved relative to the first part in at least one direction other than the direction of said helical movement such that the engagement of the stops restricts relative movement of the first and second parts.
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公开(公告)号：US20220412327A1
公开(公告)日：2022-12-29
申请号：US17781313
申请日：2020-12-02
Applicant: CAMBRIDGE MECHATRONICS LIMITED
IPC: F03G7/06
Abstract: A shape memory alloy actuator assembly (2) is disclosed. The actuator assembly comprises a support (21), a first stage (22) moveable in at least two different non-parallel directions in a first plane relative to the support, a first set of at least two shape memory alloy wires (271) configured to move the first stage in the first plane, a second stage (23) moveable in at least two different non-parallel in a second plane parallel to or coplanar with the first plane relative to the first stage, and a second set of at least two shape memory alloy wires (272) configured to move the second stage in the second plane. The first stage is coupled to the support via the first set of shape memory alloy wires and the second stage is coupled to the first stage via the second set of shape memory alloy wires such that movement of the second stage in the second plane with respect to the support is a combination of movement of the first stage relative to support and the second stage relative to the first stage.
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公开(公告)号：US20220383711A1
公开(公告)日：2022-12-01
申请号：US17791589
申请日：2021-01-08
Applicant: CAMBRIDGE MECHATRONICS LIMITED
Inventor： Andrew Benjamin Simpson Brown
Abstract: An SMA haptic assembly comprising: a length of SMA wire; and first and second parts that are movable relative to each other along a movement axis, the length of SMA wire being connected at each end to a respective support portion which is a portion of the first or second part; wherein each of the first and second parts comprises at least one contact portion and a connection portion which connects the at least one contact portion and any support portion of the respective one of the first and second parts; wherein the at least one contact portion of the first part and the at least one contact portion of the second part are relatively positioned so as to make contact with the length of SMA wire on opposite sides of the length of SMA wire along the movement axis and to guide the length of SMA wire along a tortuous path such that the first and second parts are driven apart along the movement axis on contraction of the length of SMA wire; and wherein the connection portion of the first body is a beam disposed on a side of the length of SMA wire in a direction normal to the movement axis.
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Patent Agency Ranking
公开(公告)号：US20220365181A1
公开(公告)日：2022-11-17
申请号：US17770840
申请日：2020-10-30
Applicant: CAMBRIDGE MECHATRONICS LIMITED
Inventor： Andrew Benjamin Simpson Brown , David Richards
IPC: G01S7/4865 , G01S17/10 , G01S7/481
Abstract: A time-of-flight sensor system (100) comprising an illumination source (102), an optical system (106) and a sensor (108). The illumination source (102) illuminates a subject (104) to which a time-of-flight is to be measured. The optical system (106) transitions the illumination source (102) between spot illumination and flood illumination. A sensor (108) configured to sense light scattered by the subject (104) from the illumination source (102) and to provide data dependent on sensed light. The time-of-flight sensor system (100) is configured to use the data when the illumination is within a range from spot illumination and/or in a range from flood illumination to provide time-of-flight data.
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公开(公告)号：US20220357557A1
公开(公告)日：2022-11-10
申请号：US17762007
申请日：2020-07-06
Applicant: CAMBRIDGE MECHATRONICS LIMITED
Inventor： Andrew Benjamin Simpson Brown , Robert Langhorne , James Howarth , Robin Eddington
Abstract: An actuator assembly comprises: first (20) and second (10) parts, wherein a primary axis (P) is defined with reference to the second part; a plurality of lengths of shape-memory alloy wire (30) connected between the first and second parts, wherein the lengths of wire are configured, when selectively powered, to cause three-dimensional movement of the first part relative to the second part; and a mechanism configured, when the lengths of wire are unpowered, to hold the first part in at least one position and/or orientation relative to the second part against the force of gravity for any orientation of the second part.
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公开(公告)号：US11448199B2
公开(公告)日：2022-09-20
申请号：US17295371
申请日：2019-12-16
Applicant: CAMBRIDGE MECHATRONICS LIMITED
Inventor： Andrew Benjamin Simpson Brown , Peter Van Wyk
IPC: F03G7/06
Abstract: A shape memory alloy actuator assembly comprises a first part, including a surface, a second part which moves relative to the first part across the surface and a resilient biasing element that biases the second part into contact with the first part so as to generate frictional forces therebetween for retaining the second part on the surface. At least one shape memory alloy actuator wire is connected between the first part and the second part and arranged to, on contraction thereof, apply a force to the second part with a component parallel to the surface that drives movement of the second part relative to the first part across the surface. Thus, the second part is retained on the surface when no power is applied to the shape memory alloy wire, and movement is achieved when power is applied.
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公开(公告)号：US11326583B2
公开(公告)日：2022-05-10
申请号：US17257808
申请日：2019-07-05
Applicant: CAMBRIDGE MECHATRONICS LIMITED
Inventor： Christopher Avery , Andrew Benjamin Simpson Brown , Mark Easton
IPC: F03G7/06
Abstract: Broadly speaking, embodiments of the present techniques provide techniques for delivering, when required, higher powers to SMA actuator wires by using a single controller/control circuit that implements pulse width modulation (PWM). Typically, when PWM is used to deliver power, the PWM frequency may be fixed, and power may be applied to each SMA actuator wire during each PWM cycle/period. The present techniques provide a method for delivering higher powers to SMA actuator wires (i.e. increasing the length of individual PWM pulses) without changing the duration of the PWM cycle/period. The present techniques also provide techniques for making accurate resistance measurements to determine position of a moveable component that is moved by the SMA actuator wires.
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公开(公告)号：US20220141357A1
公开(公告)日：2022-05-05
申请号：US17425584
申请日：2020-01-27
Applicant: CAMBRIDGE MECHATRONICS LIMITED
Inventor： Mark Easton , Paul Windle , Ian Edward Charles Rogers , Andrew Benjamin Simpson Brown , Christopher Richard Avery
Abstract: Disclosed is a method of synchronising an image sensor with a PWM driver operable to drive an arrangement associated with the image sensor, wherein at least one synchronisation signal produced by the image sensor is used to reset the PWM driver and the at least one synchronisation signal is delayed before being used to reset the PWM driver such that the switching on or off of the at least one synchronisation signal occurs at a defined time in relation to a sensitive period of the image sensor's operation.
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