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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
Applicant: LUMUS LTD.
Inventor： Elad Sharlin , Yochay Danziger
IPC: G02F1/13357 , F21V8/00 , G02F1/1362 , 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：US12222535B2
公开(公告)日：2025-02-11
申请号：US18365981
申请日：2023-08-05
Applicant: Lumus Ltd.
Inventor： Elad Sharlin , Ronen Chriki , Yochay Danziger
Abstract: A method for generating an image in a near-eye display may include operating a light source to emit the image as incident light. The light source may be configured such that incident light as received by the light reflecting elements compensates for the chromatic reflectance of the light reflecting elements. The method may include coupling the incident light into a light-transmitting substrate, thereby trapping the light between first and second major surfaces of the light-transmitting substrate by total internal reflection and coupling the light out of the substrate by the light reflecting elements having chromatic reflectance.
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公开(公告)号：US12013529B2
公开(公告)日：2024-06-18
申请号：US18303413
申请日：2023-04-19
Applicant: Lumus Ltd.
Inventor： Eitan Ronen , Elad Sharlin
IPC: G02B27/01
CPC classification number: G02B27/01 , G02B27/017 , G02B2027/0112 , G02B27/0172 , G02B2027/0178
Abstract: A method of moderating chromaticity of ambient light in an environment reflected back into the environment by a component comprised in a lens of glasses through which a user of views the environment, the method comprising: determining a first set of tristimulus values that characterizes ambient light reflected by the component surface as a function of angle of reflection Θ in a bounded span of angles of reflection; determining a second set of tristimulus values for angles in the bounded span of angles so that light characterized by the second set of tristimulus values combined with light reflected by the component would be perceived substantially as white light; and providing an optical coating that reflects ambient light from the environment so that the reflected light is substantially characterized by the second set of tristimulus values.
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公开(公告)号：US11994705B2
公开(公告)日：2024-05-28
申请号：US17840802
申请日：2022-06-15
Applicant: Lumus Ltd.
Inventor： Yochay Danziger , Elad Sharlin
CPC classification number: G02B6/0031 , G02B6/0016 , G02B6/002 , G02B27/283
Abstract: An optical device includes a lightguide having a first pair of external surfaces parallel to each other, and at least two sets of facets. Each of the sets including a plurality of partially reflecting facets parallel to each other, and between the first pair of external surfaces. In each of the sets of facets, the respective facets are at an oblique angle relative to the first pair of external surfaces, and at a non-parallel angle relative to another of the sets of facets. The optical device is particularly suited for optical aperture expansion.
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15.发明授权公开(公告)号：US11886008B2
公开(公告)日：2024-01-30
申请号：US18028803
申请日：2022-04-11
Applicant: Lumus Ltd.
Inventor： Ronen Chriki , Kobi Greenstein , Edgar Friedmann , Elad Sharlin
CPC classification number: G02B6/25 , B32B38/0004 , B32B2307/416 , B32B2551/00
Abstract: A stack has first and second faces and multiple LOEs that each has two parallel major surfaces and a first plurality of parallel internal facets oblique to the major surfaces. A first block has third and fourth faces and a second plurality of parallel internal facets. The first block and the stack are bonded such that the second face joins the third face and the first and second facets are non-parallel, forming a second block. The second block is cut at a plane passing through the first face, forming a first structure having an interfacing surface. A third block has fifth and sixth faces and a plurality of parallel internal reflectors. The third block and the first structure are bonded such that fifth face joins the interfacing surface and the internal reflectors are non-parallel to all the facets, forming a second structure. Compound LOEs are sliced-out from the second structure.
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Patent Agency Ranking
公开(公告)号：US11822088B2
公开(公告)日：2023-11-21
申请号：US18006959
申请日：2022-05-19
Applicant: LUMUS LTD.
Inventor： Elad Sharlin , Ronen Chriki
CPC classification number: G02B27/0172 , G02B27/0081 , G02B2027/0178
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：US11796729B2
公开(公告)日：2023-10-24
申请号：US18027105
申请日：2022-02-24
Applicant: Lumus Ltd.
Inventor： Tsion Eisenfeld , Yochay Danziger , Eitan Ronen , Ronen Chriki , Mordechai Gilo , Elad Sharlin
IPC: F21V8/00
CPC classification number: G02B6/0028 , G02B6/0055
Abstract: An optical device includes a first waveguide, having parallel first and second faces and parallel third and fourth faces forming a rectangular cross-section, that guides light by four-fold internal reflection and is associated with a coupling-out configuration that couples light out of the first waveguide into a second waveguide. The first or second face is subdivided into first and second regions having different optical characteristics. The optical device also includes a coupling-in configuration having a surface that transmits light into the first waveguide. The surface is deployed in association with a portion of the third or fourth face adjoining the second region such that an edge associated with the surface trims an input collimated image in a first dimension, and a boundary between the first and second regions trims the input collimated image in a second dimension to produce a trimmed collimated image that advances by four-fold internal reflection.
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公开(公告)号：US12242098B2
公开(公告)日：2025-03-04
申请号：US18733910
申请日：2024-06-05
Applicant: Lumus Ltd.
Inventor： Yochay Danziger , Elad Sharlin
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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公开(公告)号：US12124050B2
公开(公告)日：2024-10-22
申请号：US17424235
申请日：2020-02-27
Applicant: Lumus Ltd.
Inventor： Yochay Danziger , Elad Sharlin , Ronen Chriki
CPC classification number: G02B27/283 , G02B27/0025 , G02B27/281 , G02B27/30 , G03B21/2073
Abstract: A collimated image projector that receives light from an illuminating source and propagates the light along a light path towards an exit pupil, the projector comprising: a first homogeneous dielectric polarizing beam splitter (PBS) deployed along the light path and defining a first transition from a first light path segment to a second light path segment; a second homogeneous dielectric PBS deployed parallel to the first PBS along the second light path segment and defining a second transition from the second light path segment to a third light path segment; and collimating optics deployed along the light path after the second PBS so as to direct a collimated image towards the exit pupil; wherein the first and second PBSs are deployed such that either the first and second transitions are both performed via transmission, or the first and second transitions are both performed via reflection.
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公开(公告)号：US12099239B2
公开(公告)日：2024-09-24
申请号：US18294836
申请日：2023-05-03
Applicant: Lumus Ltd.
Inventor： Elad Sharlin , Tsion Eisenfeld , Ronen Chriki
CPC classification number: G02B6/26 , G02B27/0172 , G02B2027/0178
Abstract: An optical system may include (1) a light-guide optical element formed from transparent material and having at least first and second mutually-parallel major external surfaces for supporting propagation of an image by internal reflection, and (2) a mediating layer adjacent at least one of the at least first and second mutually-parallel major external surfaces, the mediating layer configured such that (1) reflectivity, averaged over the visible spectrum, of light coupled into the LOE and transmitted between the at least first and second mutually-parallel major external surfaces at angles below the critical angle is higher than the reflectivity that would have been expected absent the mediating layer and (2) reflectivity of purely white light lies closer to a purely white color point for an angular range from angles below the critical angle to the critical angle than the reflectivity that would have been expected absent the mediating layer.
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