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公开(公告)号：US20240151893A1
公开(公告)日：2024-05-09
申请号：US18415870
申请日：2024-01-18
Applicant: Lumus Ltd.
Inventor： Shimon GRABARNIK , Tsion EISENFELD
CPC classification number: G02B6/0065 , B29D11/00721 , G02B6/0035
Abstract: A method of fabricating a compound light-guide optical element (LOE) is provided. A bonded stack of a plurality of LOE precursors and a plurality of transparent spacer plates alternating therebetween is bonded to a first optical block having a plurality of mutually parallel obliquely angled internal surfaces. The block is joined to the stack such that first plurality of partially reflective internal surfaces of the block is non-parallel to the internal surfaces of the LOE precursor. After bonding, a second optical is thereby formed. At least one compound LOE is sliced-out of the second optical block by cutting the second block through at least two consecutive spacer plates having a LOE precursor sandwiched therebetween.
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公开(公告)号：US20230350204A1
公开(公告)日：2023-11-02
申请号：US18039260
申请日：2022-03-01
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：US20220390665A1
公开(公告)日：2022-12-08
申请号：US17794965
申请日：2021-05-24
Applicant: Lumus Ltd.
Inventor： Shimon GRABARNIK , Tsion EISENFELD
Abstract: A method of fabricating a compound light-guide optical element (LOE) is provided. A bonded stack of a plurality of LOE precursors and a plurality of transparent spacer plates alternating therebetween is bonded to a first optical block having a plurality of mutually parallel obliquely angled internal surfaces. The block is joined to the stack such that first plurality of partially reflective internal surfaces of the block is non-parallel to the internal surfaces of the LOE precursor. After bonding, a second optical is thereby formed. At least one compound LOE is sliced-out of the second optical block by cutting the second block through at least two consecutive spacer plates having a LOE precursor sandwiched therebetween.
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公开(公告)号：US20220360751A1
公开(公告)日：2022-11-10
申请号：US17636100
申请日：2020-12-06
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：US20210271006A1
公开(公告)日：2021-09-02
申请号：US17268967
申请日：2019-08-26
Applicant: LUMUS LTD.
Inventor： Eitan RONEN , Yochay DANZIGER , 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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Patent Agency Ranking
公开(公告)号：US20210055466A1
公开(公告)日：2021-02-25
申请号：US17093772
申请日：2020-11-10
Applicant: LUMUS LTD.
Inventor： Tsion EISENFELD
IPC: F21V8/00
Abstract: An optical system for displaying a projected image to an observer includes a light-guide optical element having two major parallel surfaces and configured for guiding illumination corresponding to a projected image collimated to infinity by internal reflection at the major parallel surfaces from a coupling-in region to a coupling-out region where at least part of the illumination is coupled out towards an eye of the observer, and a projector configuration associated with the coupling-in region of the light-guide optical element. The projector configuration includes a number of adjacent optical arrangements, each including collimating optics deployed for projecting a subset of the illumination. The adjacent optical arrangements cooperate to provide an entirety of the projected image to the coupling-out region.
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公开(公告)号：US20250155631A1
公开(公告)日：2025-05-15
申请号：US19019560
申请日：2025-01-14
Applicant: Lumus Ltd.
Inventor： Tsion EISENFELD , Ronen CHRIKI
Abstract: An optical system including a light-guide optical element (LOE) with a first set of mutually-parallel, partially-reflecting surfaces and a second set of mutually-parallel, partially-reflecting surfaces at a different orientation from the first set. Both sets of partially-reflecting surfaces are located between a set of mutually-parallel major external surfaces. Image illumination introduced at a coupling-in location propagates along the LOE, is redirected by the first set of partially-reflecting surfaces towards the second set of partially-reflecting surfaces, where it is coupled out towards the eye of the user. The first set of partially-reflecting surfaces are implemented as partial surfaces located where needed for filling an eye-motion box with the required image. Additionally, or alternatively, spacing of the first set of partially-reflecting surfaces is varied across a first region of the LOE. Additional features relate to relative orientations of the projector and partially reflecting surfaces to improve compactness and achieve various adjustments.
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公开(公告)号：US20250155612A1
公开(公告)日：2025-05-15
申请号：US19026661
申请日：2025-01-17
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：US20240134257A1
公开(公告)日：2024-04-25
申请号：US18395844
申请日：2023-12-26
Applicant: Lumus Ltd.
Inventor： Ronen CHRIKI , Eitan RONEN , Yochay DANZIGER , Shimon GRABARNIK , Tsion EISENFELD
CPC classification number: G03B21/147 , G02B27/48 , G03B21/2033 , G03B21/2066
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：US20230344969A1
公开(公告)日：2023-10-26
申请号：US18211308
申请日：2023-06-19
Applicant: Lumus Ltd.
Inventor： Kobi GREENSTEIN , Tsion EISENFELD , Netanel GOLDSTEIN
CPC classification number: H04N9/3152 , G02B7/021 , G02B27/0176 , G02B27/0955 , G02B27/0172 , G02B2027/0116
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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