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公开(公告)号：US12152994B2
公开(公告)日：2024-11-26
申请号：US17791923
申请日：2021-04-25
Applicant: Lumus Ltd.
Inventor： Eitan Ronen , Eitan Baibich , Elad Sharlin , Amir Shapira , Jonathan Gelberg , Netanel Goldstein , Elad Lavi
Abstract: Optical sample characterization facilitates measurement and testing at any angle in a full range of angles of light propagation through an optical sample, such as a coated glass plate, having a higher than air index of refraction. A rotatable assembly includes a cylinder having a hollow, and a receptacle including the hollow. The receptacle also contains a fluid with a known refractive index. An optical light beam is input normal to the surface of the cylinder, travels through the cylinder, then via the fluid, to the optical sample, where light beam is transmitted and/or reflected, then exits the cylinder and is collected for analysis. Due at least in part to the fluid surrounding the optical sample, the optical sample can be rotated through a full range of angles (±90°, etc.) for full range testing of the optical sample.
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公开(公告)号：US12061080B1
公开(公告)日：2024-08-13
申请号：US18578616
申请日：2022-07-26
Applicant: LUMUS LTD.
Inventor： Jonathan Gelberg , Elad Sharlin , Eitan Ronen
IPC: G01B11/27
CPC classification number: G01B11/272
Abstract: Disclosed herein is a method for validating parallelism of internal facets of a sample. The method includes: (i) providing a sample including a light transmissive substrate and internal facets, nominally parallel and nominally inclined at an angle μnom relative to a flat surface of the sample; (ii) providing a prism having a substantially same refractive index as the substrate and including a flat, first surface and a flat, second surface, opposite to the first surface and inclined relative thereto at substantially the angle μnom; (iii) positioning the sample and the prism, such that the surface of the sample is parallel and adjacent to the second surface of the prism; (iv) projecting on the first surface of the prism, substantially normally thereto an incident light beam; (v) sensing light returned from the prism following reflection off the internal facets; and (vi) computing deviation from parallelism between the internal facets.
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公开(公告)号：US12055385B1
公开(公告)日：2024-08-06
申请号：US18579590
申请日：2022-07-26
Applicant: LUMUS LTD.
Inventor： Jonathan Gelberg , Elad Sharlin , Eitan Ronen
CPC classification number: G01B11/26 , G01B11/272 , G01M11/0242 , G01M11/35
Abstract: Disclosed herein is a method including: (i) providing a light transmissive sample including nominally parallel internal facets, which are about perpendicular to an external surface of the sample; (ii) providing an optical element having a refractive index about equal to that of the sample and including an external first surface and an external second surface acutely inclined relative thereto; (iii) positioning the second surface of the optical element adjacent to the first surface of the sample; (iv) impinging light beams on the first surface of the optical element, about normally thereto; (v) sensing light beams, which exit out of the sample following passage of the impinging light beams via the optical element, transmission thereof into the sample, reflection once off the internal facets, and exit out of the sample; and (vi) based on the sensed data, computing a deviation from parallelism between the internal facets.
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公开(公告)号：US11741861B1
公开(公告)日：2023-08-29
申请号：US17667044
申请日：2022-02-08
Applicant: LUMUS LTD.
Inventor： Shimon Grabarnik , Tsion Eisenfeld , Elad Sharlin
CPC classification number: G09G3/001 , G02F1/011 , G02F2201/06 , G02F2203/01 , G02F2203/02 , G09G2320/0257 , G09G2354/00 , G09G2360/144
Abstract: In an embodiment, an apparatus is disclosed that includes at least one processor configured to determine a target portion of an eye motion box and to identify a facet of a light-guide optical element that is configured to direct a light beam comprising at least a portion of an image field of view toward the target portion of the eye motion box. The at least one processor is configured to identify a display region of an image generator that is configured to inject the light beam into the light-guide optical element at an angle that, in conjunction with the identified facet, is configured to direct the light beam toward the target portion of the eye motion box. The at least one processor is configured to selectively activate the identified facet and the identified display region to direct the light beam toward the target portion of the eye motion box.
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公开(公告)号：US11714223B2
公开(公告)日：2023-08-01
申请号：US18085640
申请日：2022-12-21
Applicant: Lumus Ltd.
Inventor： Yochay Danziger , Elad Sharlin
CPC classification number: G02B6/0035 , G02B6/0011 , G02B27/0172
Abstract: A transparent substrate has two parallel faces and guides collimated image light by internal reflection. A first set of internal surfaces is deployed within the substrate oblique to the parallel faces. A second set of internal surfaces is deployed within the substrate parallel to, interleaved and in overlapping relation with the first set of internal surfaces. Each of the internal surfaces of the first set includes a first coating having a first reflection characteristic to be at least partially reflective to at least a first subset of components of incident light. Each of the internal surfaces of the second set includes a second coating having a second reflection characteristic complementary to the first reflection characteristic to be at least partially reflective to at least a second subset of components of incident light. The sets of internal surfaces cooperate to reflect all components of light from the first and second subsets.
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Patent Agency Ranking
公开(公告)号：US12135445B2
公开(公告)日：2024-11-05
申请号：US17429977
申请日：2020-04-14
Applicant: Lumus Ltd.
Inventor： Elad Sharlin , Dror Hermoni
Abstract: A method of fabricating a light-guide optical element having a plurality of partially reflecting surfaces is disclosed. The method includes providing a plurality of transparent plates, each plate polished on two opposite surfaces such that the surfaces are parallel to each other, coating a first of the surfaces of a subset of plates with a first coating, coating a second of the surfaces of the subset of plates with a second coating; bonding together the plurality of transparent plates to form a stack, and cutting the stack along parallel planes obliquely angled to the faces of the transparent plates so as to form the optical element, wherein the first coating is a partially reflective coating have a first set of mechanical properties, and the second coating is selected from the group consisting of: a coating similar to the first coating and a non-reflective coating having a second set of mechanical properties substantially similar to the first set of mechanical properties.
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公开(公告)号：US12135430B2
公开(公告)日：2024-11-05
申请号：US18449267
申请日：2023-08-14
Applicant: LUMUS LTD.
Inventor： Elad Sharlin , Ronen Chriki
Abstract: In an embodiment, an apparatus is disclosed that includes at least one processor configured to determine a target coupling-out facet, identify an optical path to the target coupling-out facet, identify an active wave plate corresponding to the optical path, determine a target state of the active wave plate that corresponds to the optical path, set the active wave plate to the identified target state and cause a projection device to project a light beam comprising an image field of view component along the identified optical path.
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公开(公告)号：US11860369B2
公开(公告)日：2024-01-02
申请号：US18039260
申请日：2022-03-01
Applicant: Lumus Ltd.
Inventor： Ronen Chriki , Tsion Eisenfeld , Elad Sharlin
CPC classification number: G02B27/0172 , G02B27/283
Abstract: An optical system includes a light-guide optical element (LOE) (10) having mutually-parallel first and second major external surfaces (11, 12) for guiding light by internal reflection, and a projector (100) that projects illumination corresponding to a collimated image from an aperture (101). The projector injects light in to the LOE via a coupling prism (30) attached to the first major external surface (11) that projects an image injection surface. A reflective polarizing beam splitter (51) is deployed at an interface between the major external surface (11) and the coupling prism (30) parallel to the major external surfaces, to selectively transmit illumination from the coupling prism into the LOE while trapping light already within the LOE so as to propagate within the LOE by internal reflection.
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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
Applicant: LUMUS LTD.
Inventor： Elad Sharlin , Yochay Danziger
IPC: G02F1/1362 , G02F1/13357 , F21V8/00 , G02F1/1335
Abstract: 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
Applicant: Lumus Ltd.
Inventor： Yochay Danziger , Naamah Levin , Elad Sharlin , Alexander Chayet
Abstract: 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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