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公开(公告)号：US20180100954A1
公开(公告)日：2018-04-12
申请号：US15840849
申请日：2017-12-13
申请人： Adlens Limited
摘要： An actuation mechanism for simultaneous actuation of first and second variable focal length lenses is disclosed. Each lens comprises a distensible membrane bounding a fluid-filled cavity, the focal length varying with the degree of curvature of the membrane as it distends. The actuation mechanism comprises a hydraulic master actuator in fluid communication with a hydraulic slave actuator associated with the first lens and with a hydraulic slave actuator associated with the second lens. Each slave actuator is configured to vary the degree of distension of the membrane of its associated lens in response to operation of the master actuator, whereby the master actuator is operable to cause a variation of the degree of distension of the membranes of both the first and second lenses simultaneously.
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公开(公告)号：US10823981B2
公开(公告)日：2020-11-03
申请号：US16583127
申请日：2019-09-25
申请人： Adlens Limited
发明人： Robert Edward Stevens , Alex Edginton , Benjamin Thomas Tristram Holland , Daniel Paul Rhodes , Dijon Pietropinto , Derek Paul Forbes Bean , Roger Brian Minchin Clarke , Peter Lee Crossley , Richard Leefe Douglas Murray , Edwin James Stone
摘要： A deformable membrane assembly comprises an at least partially flexible fluid-filled envelope, one wall of which is formed by an elastic membrane that is held around its edge by a resiliently bendable supporting ring, a fixed support for the envelope and selectively operable means for causing relative movement between the supporting ring and the support for adjusting the pressure of the fluid in the envelope, thereby to cause the membrane to deform. The bending stiffness of the ring varies round the ring such that upon deformation of the membrane the ring bends variably to control the shape of the membrane to a predefined form. The moving means comprise a plurality of ring-engaging members that are arranged to apply a force to the ring at spaced control points. There are at least three control points, and there is a control point at or proximate each point on the ring where the profile of the ring that is needed to produce the predefined form upon deformation of the membrane exhibits a turning point in the direction of the force applied at the control point between two adjacent points where the profile of the ring exhibits an inflection point or a turning point in the opposite direction.
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公开(公告)号：US20200089024A1
公开(公告)日：2020-03-19
申请号：US16583127
申请日：2019-09-25
申请人： Adlens Limited
发明人： Robert Edward Stevens , Alex Edginton , Benjamin Thomas Tristram Holland , Daniel Paul Rhodes , Dijon Pietropinto , Derek Paul Forbes Bean , Roger Brian Minchin Clarke , Peter Lee Crossley , Richard Leefe Douglas Murray , Edwin James Stone
摘要： A deformable membrane assembly comprises an at least partially flexible fluid-filled envelope, one wall of which is formed by an elastic membrane that is held around its edge by a resiliently bendable supporting ring, a fixed support for the envelope and selectively operable means for causing relative movement between the supporting ring and the support for adjusting the pressure of the fluid in the envelope, thereby to cause the membrane to deform. The bending stiffness of the ring varies round the ring such that upon deformation of the membrane the ring bends variably to control the shape of the membrane to a predefined form. The moving means comprise a plurality of ring-engaging members that are arranged to apply a force to the ring at spaced control points. There are at least three control points, and there is a control point at or proximate each point on the ring where the profile of the ring that is needed to produce the predefined form upon deformation of the membrane exhibits a turning point in the direction of the force applied at the control point between two adjacent points where the profile of the ring exhibits an inflection point or a turning point in the opposite direction.
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公开(公告)号：US20170269378A1
公开(公告)日：2017-09-21
申请号：US15617563
申请日：2017-06-08
申请人： Adlens Limited
发明人： Robert Edward Stevens , Alex Edginton , Benjamin Thomas Tristram Holland , Daniel Paul Rhodes , Dijon Pietropinto , Derek Paul Forbes Bean , Roger Brian Minchin Clarke , Peter Lee Crossley , Richard Leefe Douglas Murray , Edwin James Stone
摘要： A deformable membrane assembly comprises an at least partially flexible fluid-filled envelope, one wall of which is formed by an elastic membrane that is held around its edge by a resiliently bendable supporting ring, a fixed support for the envelope and selectively operable means for causing relative movement between the supporting ring and the support for adjusting the pressure of the fluid in the envelope, thereby to cause the membrane to deform. The bending stiffness of the ring varies round the ring such that upon deformation of the membrane the ring bends variably to control the shape of the membrane to a predefined form. The moving means comprise a plurality of ring-engaging members that are arranged to apply a force to the ring at spaced control points. There are at least three control points, and there is a control point at or proximate each point on the ring where the profile of the ring that is needed to produce the predefined form upon deformation of the membrane exhibits a turning point in the direction of the force applied at the control point between two adjacent points where the profile of the ring exhibits an inflection point or a turning point in the opposite direction.
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公开(公告)号：US10036836B2
公开(公告)日：2018-07-31
申请号：US15840849
申请日：2017-12-13
申请人： Adlens Limited
摘要： An actuation mechanism for simultaneous actuation of first and second variable focal length lenses is disclosed. Each lens comprises a distensible membrane bounding a fluid-filled cavity, the focal length varying with the degree of curvature of the membrane as it distends. The actuation mechanism comprises a hydraulic master actuator in fluid communication with a hydraulic slave actuator associated with the first lens and with a hydraulic slave actuator associated with the second lens. Each slave actuator is configured to vary the degree of distension of the membrane of its associated lens in response to operation of the master actuator, whereby the master actuator is operable to cause a variation of the degree of distension of the membranes of both the first and second lenses simultaneously.
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公开(公告)号：US09791720B2
公开(公告)日：2017-10-17
申请号：US15617563
申请日：2017-06-08
申请人： Adlens Limited
发明人： Robert Edward Stevens , Alex Edginton , Benjamin Thomas Tristram Holland , Daniel Paul Rhodes , Dijon Pietropinto , Derek Paul Forbes Bean , Roger Brian Minchin Clarke , Peter Lee Crossley , Richard Leefe Douglas Murray , Edwin James Stone
摘要： A deformable membrane assembly comprises an at least partially flexible fluid-filled envelope, one wall of which is formed by an elastic membrane that is held around its edge by a resiliently bendable supporting ring, a fixed support for the envelope and selectively operable means for causing relative movement between the supporting ring and the support for adjusting the pressure of the fluid in the envelope, thereby to cause the membrane to deform. The bending stiffness of the ring varies round the ring such that upon deformation of the membrane the ring bends variably to control the shape of the membrane to a predefined form. The moving means comprise a plurality of ring-engaging members that are arranged to apply a force to the ring at spaced control points. There are at least three control points, and there is a control point at or proximate each point on the ring where the profile of the ring that is needed to produce the predefined form upon deformation of the membrane exhibits a turning point in the direction of the force applied at the control point between two adjacent points where the profile of the ring exhibits an inflection point or a turning point in the opposite direction.
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