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公开(公告)号：US20240134202A1
公开(公告)日：2024-04-25
申请号：US18403794
申请日：2024-01-04
Applicant: Lumus Ltd.
Inventor： Eitan RONEN , Ronen CHRIKI , Tsion EISENFELD
CPC classification number: G02B27/0172 , G02B6/0018 , G02B2027/0178
Abstract: An optical system provides two-stage expansion of an input optical aperture for a display based on a light-guide optical element. A first expansion is achieved using two distinct sets of mutually-parallel partially-reflecting surfaces, each set handing a different part of an overall field-of-view presented to the eye. In some cases, a single image projector provides image illumination to two sets of facets that are integrated into the LOE. In other cases, two separate projectors deliver image illumination corresponding to two different parts of the field-of-view to their respective sets of facets.
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公开(公告)号：US20240126085A1
公开(公告)日：2024-04-18
申请号：US18390074
申请日：2023-12-20
Applicant: Lumus Ltd.
Inventor： Ronen CHRIKI , Tsion EISENFELD , Elad SHARLIN
IPC: G02B27/01
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：US20230101540A1
公开(公告)日：2023-03-30
申请号：US18074571
申请日：2022-12-05
Applicant: Lumus Ltd.
Inventor： Kobi GREENSTEIN , Tsion EISENFELD , Netanel GOLDSTEIN
Abstract: An optical system has a hollow mechanical body having first and second ends. An optical assembly has a plurality of optical components arranged in a stack configuration. Each of the optical components has a set of engagement configurations. For each pair of adjacent optical components in the stack configuration, at least some of the engagement configurations of a first optical component in the pair engage with at least some of the engagement configurations of a second optical component in the pair. Some of the engagement configurations of the optical component at a first end of the stack configuration engage with corresponding engagement configurations of the hollow mechanical body at the first end of the hollow mechanical body to position the other optical components of the stack configuration within the hollow mechanical body. An emissive display device is deployed at the second end of the hollow mechanical body.
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公开(公告)号：US20230019309A1
公开(公告)日：2023-01-19
申请号：US17783795
申请日：2020-11-29
Applicant: Lumus Ltd.
Inventor： Ronen CHRIKI , Eitan RONEN , Yochay DANZIGER , Shimon GRABARNIK , Tsion EISENFELD
Abstract: An image projector with a high optical efficiency projects an image at an arbitrary distance from an observer. The image projector includes an illumination module having at least one spatially coherent light source; a phase image generator with an array of optical phase shifting elements; an electronic image controller connected electrically to the phase image generator; and a waveguide which includes at least one embedded partial reflector. The waveguide may be positioned either between the illumination module and the waveguide, or between the waveguide and the observer. The phase image generator may include phase shifts for canceling speckle, correcting optical aberrations, and/or compensating interference caused by light rays having different optical path lengths.
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公开(公告)号：US20220390754A1
公开(公告)日：2022-12-08
申请号：US17792452
申请日：2021-05-03
Applicant: LUMUS LTD
Inventor： Shimon GRABARNIK , Tsion EISENFELD
Abstract: Based on a rotational axis of symmetry for an output of a lightpipe coinciding with an input axis for projection optics, the lightpipe can be rotated around the rotational axis, in order to align the lightpipe with a frame of associated glasses, or correspondingly the temple of a wearer of the glasses. Thus, an improved or optimal aesthetic look of a display system can be approached. The lightpipe of the display system can be aligned with the frame of the glasses, or even hidden within the frame, depending on implementation details and requirements for image projection components. If a pantoscopic tilt of the lens (waveguide) changes, a rotation of the lightpipe can be applied to the lightpipe to bring the lightpipe in a position aligned with the temple again, thus avoiding the need for a lightpipe redesign.
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Patent Agency Ranking
公开(公告)号：US20220091413A1
公开(公告)日：2022-03-24
申请号：US17427963
申请日：2020-10-25
Applicant: Lumus Ltd.
Inventor： Shimon GRABARNIK , Tsion EISENFELD , Eitan RONEN , Ronen CHRIKI
Abstract: A display for providing an image to an eye of an observer is disclosed. An image generator provides image illumination corresponding to the image to a substrate having mutually-parallel major external surfaces for propagation within the substrate. An intermediate optical arrangement including at least one astigmatic optical element directs the image illumination from the image generator so as to propagate within the substrate in a first in-plane direction by internal reflection. A reflective optical arrangement having cylindrical optical power reflects the image illumination so as to propagate in a second in-plane direction by internal reflection. A coupling-out arrangement couples out the collimated image illumination towards an eye of an observer. The intermediate optical arrangement includes an element deployed to generate a corrective optical aberration that at least partially cancels out with a characteristic aberration introduced by the reflective optical arrangement.
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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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8.发明申请公开(公告)号：US20250116858A1
公开(公告)日：2025-04-10
申请号：US18694920
申请日：2022-09-30
Applicant: LUMUS LTD.
Inventor： Tsion EISENFELD
Abstract: A device having an active occlusion subsystem having a liquid crystal panel configured to operate in one of a normally on mode to pass light or a normally off mode to block light, and one or more processors configured to determine a direction of light rays from a light source, and control, based on the direction of light rays received, at least one specific portion of the liquid crystal panel to switch from the normally on mode to block light and/or the at least one specific portion to switch from the normally off mode to pass light.
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公开(公告)号：US20240402401A1
公开(公告)日：2024-12-05
申请号：US18804246
申请日：2024-08-14
Applicant: Lumus Ltd.
Inventor： Yochay DANZIGER , Eitan RONEN , Jonathan GELBERG , Tsion EISENFELD , Amir SHAPIRA
Abstract: A near-eye display includes a light-guide optical element (LOE) (10) having first and second major external surfaces (11A, 11B) that are planar and mutually parallel. An image projector (2) introduces into the LOE illumination corresponding to an image so that the illumination propagates within said LOE by internal reflection at the major external surfaces. A coupling-out arrangement couples the illumination out of the LOE towards the eye of the observer. The coupling-out arrangement may be a set of mutually-parallel, partially-reflective surfaces (12A) deployed at an oblique angle within the LOE. Various arrangements for suppressing reflections of ambient light sources include obstructing baffles oriented so as to avoid reduction of peripheral field of view, various non-reflective coatings and various deployments of polarization filters.
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公开(公告)号：US20240361508A1
公开(公告)日：2024-10-31
申请号：US18762883
申请日：2024-07-03
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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