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公开(公告)号：US12055744B2
公开(公告)日：2024-08-06
申请号：US18220321
申请日：2023-07-11
申请人： LUMUS LTD.
发明人： Yochay Danziger
CPC分类号： G02B6/0016 , G02B5/18 , G02B6/00 , G02B6/0028 , G02B6/0038 , G02B6/0075 , G02B6/34 , G02B27/0081 , G02B27/0172 , G02B27/10 , G02B27/28 , G02B2027/0116 , G02B2027/0125
摘要： An optical assembly for optical aperture expansion combines facet reflective technology with diffractive technology. At least two diffractive components having opposite optical power (matching) are used, so that chromatic dispersion introduced by the first diffractive component will then be cancelled by the second diffractive component. The two diffractive components are used in combination with a reflective optical component to achieve more efficient aperture expansion (for near eye display), reducing distortions and noise, while also reducing design constraints on the system and individual components, as compared to conventional techniques. The assembly eliminates and/or reduces the need for polarization management, while enabling wider field of view. In addition, embodiments can have reduced nonuniformity, as compared to conventional single technology implementations, since the distortion patterns of the two technologies do not correlate.
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公开(公告)号：US12025806B1
公开(公告)日：2024-07-02
申请号：US18231282
申请日：2023-08-08
申请人： Lumus Ltd.
发明人： Yochay Danziger , Edgar Friedmann
CPC分类号： G02B27/0172
摘要： A method of fabricating an optical aperture multiplier is provided. A slice and a first optical structure are obtained. The slice has external faces including a pair of parallel faces, and a first plurality of partially reflective internal surfaces oblique to the pair of parallel faces. The first optical structure has external surfaces including a planar coupling surface, and a second plurality of partially reflective internal surfaces oblique to the coupling surface. The slice is optically coupled with the first optical structure such that one of the faces of the pair of parallel faces is in facing relation with the coupling surface to form a second optical structure. At least one optical aperture multiplier is sliced from the second optical structure by cutting the second optical structure through at least two cutting planes perpendicular to the coupling surface. The optical aperture multiplier is preferably part of a near eye display augmented reality system.
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公开(公告)号：US11927872B2
公开(公告)日：2024-03-12
申请号：US17622257
申请日：2020-06-23
申请人： Lumus Ltd.
发明人： Yochay Danziger
CPC分类号： G02F1/294 , G02B6/003 , G02B6/0031 , G02B27/0093 , G02F1/0136 , G06F3/013 , G06V10/25 , H04N9/317 , G02F1/133524 , G02F1/133526 , H04N9/3161
摘要： A display system (500) for displaying an image to an eye of a user includes a light-guide optical element (LOE) (506) and an image projector (512) projecting image illumination of a collimated image into the LOE. The image projector includes an electrically-controllable variable lens (10, 13, 71, 77, 58A, 58B, 59, 58C, 58D, 58E, 58F1, 58F2, 58G1, 58G2, 58H, 1223). A controller (18) determines a current region of interest of the image, either from tracking of the user's eye or by analysis of the image content, and controls the variable lens so as to reduce aberrations in the current region of interest at the expense of increased aberration in at least one area of the image outside the current region of interest.
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公开(公告)号：US11927734B2
公开(公告)日：2024-03-12
申请号：US17857253
申请日：2022-07-05
申请人： LUMUS LTD.
发明人： Yochay Danziger , Edgar Friedmann
CPC分类号： G02B17/086 , B29D11/00663 , B29D11/00875 , G02B1/10 , G02B6/34 , G02B17/00 , G02B6/30
摘要： A light-guide device includes a light guiding element (13) with a number of faces, including two parallel faces (26), for guiding light by internal reflection. A transparent optical element (19) has an interface surface for attachment to a coupling surface (14) of the light guiding element, and is configured such that light propagating within the transparent optical element passes through the interface surface and the coupling surface (14) so as to propagate within the light guiding element (13). A non-transparent coating (15) is applied to at least part of one or more faces of the light guiding element (13), defining an edge (17) adjacent to, or overlapping, the coupling surface (14) of the light guiding element (13). A quantity of transparent adhesive is deployed between the coupling surface and the interface surface so as to form an optically transmissive interface. An overspill region 31 of the adhesive extends to, and overlaps, the edge (17).
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公开(公告)号：US11747635B2
公开(公告)日：2023-09-05
申请号：US17729241
申请日：2022-04-26
申请人： LUMUS LTD
发明人： Yochay Danziger , Eitan Ronen
CPC分类号： G02B27/0179 , A61B3/113 , A61B3/12 , G02B27/0093 , G02B27/0172 , G06V40/19 , G02B6/0011 , G02B2027/014 , G02B2027/0138 , G02B2027/0178 , G02B2027/0187
摘要： An apparatus (100) for deriving a gaze direction of a human eye (150) includes a light-guide optical element (LOE) (120) having pair of parallel faces (104a), (104b) deployed in facing relation to the eye (150). A coupling-in configuration, such as a set of partially-reflective surfaces (145), is associated with LOE (120) and configured for coupling-in a proportion of light incident on face (104a) so as to propagate within the LOE. Focusing optics (106) associated with LOE (120) converts sets of parallel light rays propagating within the LOE into converging beams of captured light which are sensed by an optical sensor (125). A processing system (108) processes signals from the optical sensor (125) to derive a current gaze direction of the eye. Despite the aperture-combining effect of the LOE, retinal images can be effectively recovered as the only image information brought to focus on the optical sensor.
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公开(公告)号：US11561435B2
公开(公告)日：2023-01-24
申请号：US17666637
申请日：2022-02-08
申请人： LUMUS LTD.
发明人： Elad Sharlin , Yochay Danziger
IPC分类号： G02F1/1362 , G02F1/13357 , F21V8/00 , G02F1/1335
摘要： A system for uniform optical illumination of an image light provider in a smaller (compact) configuration than conventional implementations includes a lightguide having: a first external surface and a second external surface mutually parallel, and a first sequence of facets, at least a portion of which are: a plurality of parallel, partially reflecting, and polarization selective surfaces, at an oblique angle relative to the first and second external surfaces, and between the first and second external surfaces, and a front-lit reflective polarization rotating image modulator: deployed to spatially modulate light coupled-out from the first external surface, outputting reflected light corresponding to an image, and deployed such that the reflected light traverses the lightguide from the first external surface via the first sequence of facets to the second external surface.
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公开(公告)号：US11513352B2
公开(公告)日：2022-11-29
申请号：US16652087
申请日：2018-09-23
申请人： Lumus Ltd.
发明人： Yochay Danziger , Naamah Levin , Elad Sharlin , Alexander Chayet
摘要： A display has an image projector projecting collimated image illumination along a projection direction, and an optical element having two major surfaces and containing partially reflective surfaces which are internal to the optical element, planar, mutually parallel and overlapping relative to the projection direction. Each ray of the collimated image illumination enters the optical element and is partially reflected by at least two of the partially reflective surfaces so as to be redirected to exit the first major surface along a viewing direction. An alternative implementation, a first reflection from one of the partially reflective surfaces redirects part of the image illumination rays so as to undergo total internal reflection at the major surfaces of the optical element. The rays are then redirected by further reflection from another of the partially reflective surfaces to exit the optical element along the viewing direction.
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公开(公告)号：US11500143B2
公开(公告)日：2022-11-15
申请号：US16480329
申请日：2017-03-15
申请人： LUMUS LTD.
发明人： Yochay Danziger
摘要： An optical system is presented for use in an augmented reality imaging system. The optical system comprises a light directing device, and a projecting optical device. The light directing device is configured for directing input light, including light indicative of an augmented image to be projected and input light indicative of a real image of an external scene, to propagate to an imaging plane. The projecting optical device has a fixed field of view and has a plurality of different focal parameters at different regions thereof corresponding to different vision zones within the field of view. The projecting optical device is configured to affect propagation of at least one of light indicative of the augmented image and light indicative of the real image, such that, for each of the different regions, interaction of a part of the light indicative of the augmented image and a part of the light indicative of the real image with said region of projecting optical device directs the parts of augmented image light and real image along a substantially common output propagation path, corresponding to the focal parameter of said region.
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公开(公告)号：US11448816B2
公开(公告)日：2022-09-20
申请号：US17234885
申请日：2021-04-20
申请人： Lumus Ltd.
发明人： Yochay Danziger , Ronen Chriki , Jonathan Gelberg
摘要： An optical system including a light-guide optical element (LOE) with first and second sets (204, 206) of mutually-parallel, partially-reflecting surfaces at different orientations. Both sets of partially-reflecting surfaces are located between parallel major external surfaces. A third set of at least partially-reflecting surfaces (202), deployed at the coupling-in region, receive image illumination injected from a projector (2) with an optical aperture having a first in-plane width and direct the image illumination via reflection of at least part of the image illumination at the third set of at least partially-reflective facets towards the first set of partially-reflective facets with an effective optical aperture having a second width larger than the first width.
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公开(公告)号：US11243434B2
公开(公告)日：2022-02-08
申请号：US16632410
申请日：2018-07-19
申请人： LUMUS LTD.
发明人： Elad Sharlin , Yochay Danziger
IPC分类号： G02F1/13357 , F21V8/00 , G02F1/1362 , G02F1/1335
摘要： A system for uniform optical illumination of an image light provider in a smaller (compact) configuration than conventional implementations includes a lightguide having: a first external surface and a second external surface mutually parallel, and a first sequence of facets, at least a portion of which are: a plurality of parallel, partially reflecting, and polarization selective surfaces, at an oblique angle relative to the first and second external surfaces, and between the first and second external surfaces, and a front-lit reflective polarization rotating image modulator: deployed to spatially modulate light coupled-out from the first external surface, outputting reflected light corresponding to an image, and deployed such that the reflected light traverses the lightguide from the first external surface via the first sequence of facets to the second external surface.
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