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公开(公告)号：US20230350125A1
公开(公告)日：2023-11-02
申请号：US18218624
申请日：2023-07-06
Applicant: Lumus Ltd.
Inventor： Yochay DANZIGER , Elad SHARLIN
IPC: F21V8/00
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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公开(公告)号：US20230258930A1
公开(公告)日：2023-08-17
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 , G02B27/0172 , G02B2027/0112 , 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：US20230194770A1
公开(公告)日：2023-06-22
申请号：US18004284
申请日：2022-07-01
Applicant: Lumus Ltd.
Inventor： Elad SHARLIN , Ronen CHRIKI , Yochay DANZIGER
CPC classification number: G02B6/0055 , G02B27/0172
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：US20230124852A1
公开(公告)日：2023-04-20
申请号：US18085640
申请日：2022-12-21
Applicant: Lumus Ltd.
Inventor： Yochay DANZIGER , Elad SHARLIN
IPC: F21V8/00
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：US20210055218A1
公开(公告)日：2021-02-25
申请号：US17043842
申请日：2019-04-07
Applicant: Lumus Ltd.
Inventor： Chaim ALDAAG , Tzofia LAVI , Dror HERMONI , Jonathan GELBERG , Yosef LAVIAN , Netanel GOLDSTEIN , Elad SHARLIN , Elad LAVI , Kobi GREENSTEIN , Amir SHAPIRA , Mordechai GILO , Tsion EISENFELD
Abstract: Optical sample characterization facilitates measurement and testing such as transmittance or reflectance at any discrete angle in a full range of angles of light propagation through 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 having a refractive index matching the refractive index of the cylinder and coated plate. An optical light beam is input normal to the surface of the cylinder, travels through the cylinder, then via the index matching fluid through the coating, the coated glass plate, the fluid, the other side of the cylinder, and is collected for analysis. Due at least in part to the index matching fluid surrounding the coated plate, the plate can be rotated through a full range of angles (±90°, etc.) for full range testing of the coating.
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Patent Agency Ranking
公开(公告)号：US20200249481A1
公开(公告)日：2020-08-06
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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公开(公告)号：US20250164793A1
公开(公告)日：2025-05-22
申请号：US18842417
申请日：2023-04-02
Applicant: Lumus Ltd.
Inventor： Yochay DANZIGER , Elad SHARLIN
IPC: G02B27/01
Abstract: A display includes a lightguide (10, 110) with mutually-parallel major surfaces and at least two image projectors (2a, 2b, 2c) outputting collimated light of at least first and second colors, respectively. In one embodiment, the two image projectors introduce the collimated light so as to propagate within the lightguide along the same in-plane direction. Interference of one of the coupling-in arrangements with internal reflection of the other color is avoided by providing a dichroic reflector (9a1, 9b1, 9a2, 9b2, 9a3) coplanar with a major surface of the lightguide. Alternatively, or additionally, the two colors may be introduced so as to propagate in two non-parallel directions, and are combined by a dichroic reflector (12a, 12b) embedded within the lightguide. Also disclosed is a display with an optical relay (66a, 66b) for transferring images between two non-parallel lightguides (110a and 110b, 10).
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公开(公告)号：US20240355243A1
公开(公告)日：2024-10-24
申请号：US18760290
申请日：2024-07-01
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：US20240310569A1
公开(公告)日：2024-09-19
申请号：US18675666
申请日：2024-05-28
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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公开(公告)号：US20240272361A1
公开(公告)日：2024-08-15
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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