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公开(公告)号：US12181785B2
公开(公告)日：2024-12-31
申请号：US18395844
申请日：2023-12-26
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：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：US11543583B2
公开(公告)日：2023-01-03
申请号：US17268970
申请日：2019-09-09
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：US11448816B2
公开(公告)日：2022-09-20
申请号：US17234885
申请日：2021-04-20
Applicant: Lumus Ltd.
Inventor： Yochay Danziger , Ronen Chriki , Jonathan Gelberg
Abstract: An optical system including a light-guide optical element (LOE) with first and second sets (204, 206) of mutually-parallel, partially-reflecting surfaces at different orientations. Both sets of partially-reflecting surfaces are located between parallel major external surfaces. A third set of at least partially-reflecting surfaces (202), deployed at the coupling-in region, receive image illumination injected from a projector (2) with an optical aperture having a first in-plane width and direct the image illumination via reflection of at least part of the image illumination at the third set of at least partially-reflective facets towards the first set of partially-reflective facets with an effective optical aperture having a second width larger than the first width.
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Patent Agency Ranking
公开(公告)号：US12019249B2
公开(公告)日：2024-06-25
申请号：US17789196
申请日：2020-11-30
Applicant: Lumus Ltd.
Inventor： Eitan Ronen , Ronen Chriki , Naamah Levin , Lilya Lobachinsky
CPC classification number: G02B27/0179 , G02B6/42 , G02B6/4214 , G02B27/0101 , G02B27/0172 , G06F3/013 , H04N23/56 , G02B2027/0178 , G02B2027/0187
Abstract: A light-transmitting substrate has at least two major surfaces and is deployed with a first of the major surfaces in facing relation to an eye of a viewer. A light redirecting arrangement is associated with the light-transmitting substrate and deflects light from the eye toward an optical sensor that senses light, such that the light deflection occurs at the light-transmitting substrate and the deflected light that reaches the optical sensor is unguided by the light-transmitting substrate. A processor derives current gaze direction of the eye by processing signals from the optical sensor.
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公开(公告)号：US11940625B2
公开(公告)日：2024-03-26
申请号：US17290763
申请日：2019-11-10
Applicant: Lumus Ltd.
Inventor： Yochay Danziger , Ronen Chriki , Daniel Michaels
CPC classification number: G02B27/0172 , B60K35/00 , G02B5/3066 , G02B6/0055 , B60K35/23 , B60K2360/23 , B60K2360/334 , B60K2360/336 , B60K2360/347 , G02B2027/013 , G02B2027/0178
Abstract: A display includes a light-guide optical element (LOE) (20) and a projector arrangement (10a) for injecting an image into the LOE so as to propagate within the LOE by internal reflection at a pair of major faces. The image is coupled out from the LOE by a coupling-out arrangement, exemplified here as internal partially-reflecting surfaces (22b). The image is coupled out from the LOE in a direction away from the eye of the observer (24b), and a reflector (30) reflects the coupled-out image back through the LOE (32), towards the eye of the observer (26). Reflector (30) is preferably a selective partial reflector, and may be convex to provide a desired apparent image distance.
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公开(公告)号：US11885966B2
公开(公告)日：2024-01-30
申请号：US17422491
申请日：2020-12-30
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：US20210239898A1
公开(公告)日：2021-08-05
申请号：US17234885
申请日：2021-04-20
Applicant: Lumus Ltd.
Inventor： Yochay Danziger , Ronen Chriki , Jonathan Gelberg
Abstract: An optical system including a light-guide optical element (LOE) with first and second sets (204, 206) of mutually-parallel, partially-reflecting surfaces at different orientations. Both sets of partially-reflecting surfaces are located between parallel major external surfaces. A third set of at least partially-reflecting surfaces (202), deployed at the coupling-in region, receive image illumination injected from a projector (2) with an optical aperture having a first in-plane width and direct the image illumination via reflection of at least part of the image illumination at the third set of at least partially-reflective facets towards the first set of partially-reflective facets with an effective optical aperture having a second width larger than the first width.
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公开(公告)号：US10983264B2
公开(公告)日：2021-04-20
申请号：US16638495
申请日：2020-01-26
Applicant: Lumus Ltd.
Inventor： Yochay Danziger , Ronen Chriki , Jonathan Gelberg
Abstract: An optical system including a light-guide optical element (LOE) with first and second sets (204, 206) of mutually-parallel, partially-reflecting surfaces at different orientations. Both sets of partially-reflecting surfaces are located between parallel major external surfaces. A third set of at least partially-reflecting surfaces (202), deployed at the coupling-in region, receive image illumination injected from a projector (2) with an optical aperture having a first in-plane width and direct the image illumination via reflection of at least part of the image illumination at the third set of at least partially-reflective facets towards the first set of partially-reflective facets with an effective optical aperture having a second width larger than the first width.
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