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公开(公告)号：US11194174B2
公开(公告)日：2021-12-07
申请号：US16078137
申请日：2017-02-22
申请人： Adlens LTD
发明人： Robert Edward Stevens , Alex Edginton , Daniel Paul Rhodes , Martyn Francis Kenneally , Simon Peter Horrocks , Benjamin Ian Curnow
摘要： A method of fabricating a lens element for an adjustable power lens of the kind comprising two lens elements that are slidable relative to one other in a direction transverse the optical axis of the lens and have respective lens surfaces that are shaped to act together to form a corrective lens, the power of which varies according to the relative disposition of the two lens elements, the method comprising the steps of forming a lens puck having two opposite faces, which are shaped to form opposite lens surfaces of one of the lens elements of the adjustable power lens, the puck having at least one alignment feature, and thereafter edging the puck to a desired eye shape with reference to the alignment feature.
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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：US20150370092A1
公开(公告)日：2015-12-24
申请号：US14767894
申请日：2013-05-24
申请人： Adlens Ltd.
发明人： Jon Nisper , Robert Edwards Stevens
CPC分类号： G02C7/081 , G02B26/0875 , G02B27/017 , G02B2027/011 , G02B2027/0138 , G02B2027/0178 , G02C9/00 , G02C2202/20
摘要： A variable-power lens includes first and second lens elements one behind the other along an optical axis of the lens. Each element has opposed planar and curved surfaces such that the thickness of each element in a direction parallel to the optical axis varies in a direction transverse to the optical axis. The elements are relatively moveable in the transverse direction, whereby the power of the lens may be varied. The elements are arranged such that the curved surface of the first element is adjacent the second element and the planar surface of the first element bears a diffractive pattern.
摘要翻译： 可变功率透镜包括沿着透镜的光轴彼此相继的第一和第二透镜元件。 每个元件具有相对的平面和弯曲表面，使得每个元件在平行于光轴的方向上的厚度在横向于光轴的方向上变化。 这些元件在横向方向上相对可移动，由此可以改变透镜的功率。 元件布置成使得第一元件的弯曲表面与第二元件相邻，并且第一元件的平面表面具有衍射图案。
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公开(公告)号：US11966042B2
公开(公告)日：2024-04-23
申请号：US17041994
申请日：2019-03-26
申请人： ADLENS LTD.
CPC分类号： G02B26/004 , G02B3/14 , G02B27/0172 , G02B2027/0127 , G02B2027/0178 , G02C7/085
摘要： An augmented reality display unit for use in an augmented reality headset or the like comprising front and rear variable focusing power compression liquid lens assemblies (220, 230) in mutual optical alignment on an optical axis (O), a transparent waveguide display (240) interposed between the front and rear liquid lens assemblies (220, 230) and a selectively operable adjustment mechanism for adjusting the focusing powers of the front and rear compression liquid lens assemblies (220, 230); wherein each of the front and rear compression liquid lens assemblies (220, 230) comprises a fluid-filled envelope (225, 235) having a first wall formed by a distensible elastic membrane (226, 236) that is held under tension around its edge by a peripheral support ring, a second substantially rigid wall (223, 233) formed by or supported on an inner surface of a transparent plate or a hard lens of fixed focusing power, and a collapsible side wall (227, 237), the membrane forming an optical surface of variable optical power, and the adjustment mechanism being arranged to displace the support ring towards or away from the second wall parallel to the optical axis (O) for increasing or decreasing the pressure of the fluid (228, 238) within the envelope thereby to cause the membrane to distend or contract respectively parallel to the optical axis for changing the focusing power of the optical surface of the membrane (226, 236); wherein the second wall (223) of the front compression liquid lens (220) is formed by or supported on a transparent plate or hard lens (222) which is tilted at a first angle to the optical axis to introduce a first amount of prism to a ray of light passing therethrough, and the second wall (233) of the rear compression liquid lens is formed by or supported on a transparent plate or hard lens (232) which is tilted at a second angle to the optical axis to introduce a second amount of prism to a ray of light passing therethrough, wherein the first and second amounts of prism are mutually substantially equal and opposite.
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5.发明授权公开(公告)号：US11867928B2
公开(公告)日：2024-01-09
申请号：US17043199
申请日：2019-03-28
申请人： ADLENS LTD
摘要： Methods of filling an envelope (16) of a compression-type adjustable optical device (10), such as a liquid lens or mirror, which is formed in part by a distensible membrane (11) having an exterior optical surface, with a substantially incompressible fluid (15) to a predetermined optical power or radius of curvature; the methods comprising pumping fluid into the envelope (16) under vacuum through a fluid supply conduit (23) in fluid communication with an interior of the envelope (16) while allowing air to escape from the envelope through a fluid overflow conduit (26) in fluid communication with the interior of the envelope (16); continuing to pump fluid (15) into the envelope (16) to cause the membrane (11) to distend to an optical power of the optical device (10) that is greater than the predetermined optical power while allowing excess fluid (15) to escape from the envelope through the overflow device (26); slowing or stopping the supply of fluid to the envelope (16), thereby to allow the membrane (11) progressively to relax and monitoring the optical power of the optical device (10) until it falls to the predetermined optical power; removing the fluid supply conduit (23) and fluid overflow conduit (26); and thereafter sealing the envelope (16). Also disclosed is an overflow device having a deflector portion (261) and a filling device (280) for use in the methods of the invention.
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公开(公告)号：US20210033871A1
公开(公告)日：2021-02-04
申请号：US17043212
申请日：2019-03-28
申请人： ADLENS LTD
发明人： Thomas Norman Llyn JACOBY , Simon Peter HORROCKS , Daniel Paul RHODES , David MLYNSKI , Robert Edward STEVENS
摘要： An adjustable fluid-filled lens or minor assembly 100 comprising a fluid-filled envelope and a supporting structure therefor; the fluid-filled envelope being constituted by a first wall that is formed of a distensible elastic membrane 15 having an exterior optical surface of variable focusing power, a second wall 18 that is spaced from the first wall on a z-axis, and a collapsible peripheral side wall 17 that extends between the first and second walls, and being filled with a substantially incompressible fluid 16; a membrane holding structure 14 that is attached to a peripheral edge of membrane 15 for holding the membrane under tension; and one or more selectively operable actuator assemblies r1, r2, r3 for moving one or more corresponding regions of the peripheral edge of the membrane on the z-axis towards and away from the second wall 18 for controlling the profile of the peripheral edge of the membrane; wherein the or each actuator assembly comprises a connecting member 91, 92, 93 that is attached to the membrane or membrane holding structure at a respective actuation point, a linear actuator 531, 532, 533 that is mounted to the supporting structure and a linkage 81, 82, 83 that is connected between the connecting member and an actuation point a1, a2, a3 on the linear actuator; wherein the linear actuator is a linear SMA actuator comprising an array of SMA wires 53 that are coupled together to work in parallel and which extend transversely of the z-axis, and the linkage is configured for converting linear motion of the actuation point of the SMA actuator in a direction transverse the z-axis to linear motion of the connecting member on the z-axis, thereby to move the corresponding region of the peripheral edge of the membrane 5 towards or away from the second wall 18.
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7.发明申请公开(公告)号：US20210026044A1
公开(公告)日：2021-01-28
申请号：US17043199
申请日：2019-03-28
申请人： ADLENS LTD
摘要： Methods of filling an envelope (16) of a compression-type adjustable optical device (10), such as a liquid lens or mirror, which is formed in part by a distensible membrane (11) having an exterior optical surface, with a substantially incompressible fluid (15) to a predetermined optical power or radius of curvature; the methods comprising pumping fluid into the envelope (16) under vacuum through a fluid supply conduit (23) in fluid communication with an interior of the envelope (16) while allowing air to escape from the envelope through a fluid overflow conduit (26) in fluid communication with the interior of the envelope (16); continuing to pump fluid (15) into the envelope (16) to cause the membrane (11) to distend to an optical power of the optical device (10) that is greater than the predetermined optical power while allowing excess fluid (15) to escape from the envelope through the overflow device (26); slowing or stopping the supply of fluid to the envelope (16), thereby to allow the membrane (11) progressively to relax and monitoring the optical power of the optical device (10) until it falls to the predetermined optical power; removing the fluid supply conduit (23) and fluid overflow conduit (26); and thereafter sealing the envelope (16). Also disclosed is an overflow device having a deflector portion (261) and a filling device (280) for use in the methods of the invention.
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公开(公告)号：US20190258084A1
公开(公告)日：2019-08-22
申请号：US15763393
申请日：2016-09-28
申请人： ADLENS LTD
发明人： Robert Edward Stevens , Thomas Jacoby , Derek Paul Forbes Bean , William Guest , Jon Nisper , Tom Worsley , Ashutosh Kumar , Richard Wilhelm Janse Van Rensburg , Peter Lee Crossley , Rita Stella
摘要： A method of assembling an adjustable fluid-filled lens assembly comprising biaxially tensioning an elastomeric membrane to a surface tension of greater than 180 N/m, typically greater than 1000 N/m; thermally conditioning the tensioned membrane, e.g., for one hour at a temperature of about 80° C., to accelerate relaxation of the membrane; mounting the membrane to a peripheral support structure whilst maintaining the tension in the membrane; assembling the mounted membrane with one or more other components to form an enclosure with the membrane forming one wall of the enclosure; and thereafter filling the enclosure with a fluid. The membrane may be formed from an aromatic polyurethane, and the fluid may be a phenylated siloxane. In some embodiments, the membrane is able to hold a substantially constant surface tension of at least 180 N/m for a period of at least 12 months.
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公开(公告)号：US09874664B2
公开(公告)日：2018-01-23
申请号：US14764726
申请日：2014-01-30
申请人： Adlens Ltd.
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：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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