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公开(公告)号：US20180101028A1
公开(公告)日：2018-04-12
申请号：US15784626
申请日：2017-10-16
申请人： Adlens Ltd.
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 we 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：US09671621B2
公开(公告)日：2017-06-06
申请号：US15025188
申请日：2014-09-25
申请人： Adlens Ltd.
发明人： Benjamin Thomas Tristram Holland , Daniel Paul Rhodes , Conor Briody , Thomas Norman Llyn Jacoby , Jon Nisper , Robert Edward Stevens
CPC分类号： G02C7/085 , G02B3/14 , G02B26/004 , G02B26/0825
摘要： A deformable membrane assembly comprises a deformable membrane (70) in contact with a body of fluid (90) and a selectively operable adjuster for adjusting the pressure of the fluid (90) for causing distension of the membrane (70) in accordance with a predefined form. The membrane is held peripherally by a bendable supporting member (50) that is coupled to a fixed support by at least three engaging members (82) at spaced locations round the supporting member (50). An engaging member (82) is provided at or proximate at least one point round the supporting member (50) where the profile of the supporting member (50) corresponding to the predefined form of the membrane (70) exhibits locally maximum or minimum curvature in the direction of distension of the membrane (70).
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公开(公告)号：US09810923B2
公开(公告)日：2017-11-07
申请号：US14388747
申请日：2012-12-14
申请人： Adlens Ltd.
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： The present invention provides a deformable membrane assembly 1 comprising an elastic membrane 8 that is held under tension around its edge by a bendable membrane supporting member 2,10, a body of fluid in contact with one face of the membrane, the pressure of the fluid being controllable for adjusting the shape of the membrane, and one or more bending controllers 24 acting on the supporting member 2, 10 to control the bending of the supporting member in response to loading through tension in the membrane. The bending stiffness of the membrane-supporting member 2, 10 varies round its extent to control the profile of the edge of the membrane 8; etc. upon actuation. A variety of different types of bending controllers are disclosed which permit out-of-plane bending of the supporting member 2, 10 but prevent or control in-plane bending or deformation of the supporting member. In some embodiments, the bending controllers permit a degree of controlled in-plane bending of the supporting member 2, 10 in order to control the strain in the membrane 8 upon actuation.
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