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公开(公告)号：US11982810B2
公开(公告)日：2024-05-14
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
CPC分类号： G02B27/0172 , G02B3/14 , G02B26/0825 , G02B2027/0178 , G02C7/085
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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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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3.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：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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