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公开(公告)号：US12222508B2
公开(公告)日：2025-02-11
申请号：US18017865
申请日：2021-08-24
Applicant: LUMUS LTD.
Inventor： Eitan Ronen , Ronen Chriki , Jonathan Gelberg
Abstract: Disclosed herein is an optical assembly for generating a color image using white light as source. The optical assembly includes a broadband white light source array, a color filter assembly configured to allow selectively filtering therethrough light in each of three additive primary colors, and a control unit. The control unit is configured to actuate light sources in the light source array according to three intensity maps. Each of the intensity maps corresponds to one of the three additive primary colors. The control unit is further configured to synchronize operations of the light source array and the color filter arrangement such that, when light sources in the light source array are actuated according to one of the three intensity maps, the color filter arrangement filters therethrough light at the additive primary color to which the intensity map corresponds.
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公开(公告)号：US12216284B2
公开(公告)日：2025-02-04
申请号：US18390074
申请日：2023-12-20
Applicant: Lumus Ltd.
Inventor： Ronen Chriki , Tsion Eisenfeld , Elad Sharlin
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：US11934002B2
公开(公告)日：2024-03-19
申请号：US18215195
申请日：2023-06-28
Applicant: Lumus Ltd.
Inventor： Yochay Danziger , Ronen Chriki , Jonathan Gelberg
CPC classification number: G02B6/0055 , G02B6/0028 , G02B6/0051 , G02B27/0172 , G02B27/145 , G02B2027/0178
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：US11914187B2
公开(公告)日：2024-02-27
申请号：US17420675
申请日：2020-07-05
Applicant: Lumus Ltd.
Inventor： Eitan Ronen , Ronen Chriki , Daniel Michaels
CPC classification number: G02B6/10 , G02B27/0172 , G02B2027/0178
Abstract: An optical system for displaying an image includes a waveguide (10) having two major surfaces (12, 14) that support propagation of image illumination by internal reflection. A coupling-out configuration (16, 18) couples out image illumination towards the eye of the user. An image projector (20) is coupled so as to introduce image illumination into the waveguide so as to propagate by internal reflection. The waveguide also contains a symmetrical beam multiplier region, distinct from the coupling-out region, having one or more beam splitters (24) internal to the waveguide and parallel to its major surfaces. The symmetrical beam multiplier may be used to fill in a conjugate image after a compact coupling-in configuration, and/or may be used to fill the waveguide with the image as an intermediate stage (36) between two optical aperture expansion configurations (32, 34).
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公开(公告)号：US11841526B2
公开(公告)日：2023-12-12
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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Patent Agency Ranking
公开(公告)号：US10739512B2
公开(公告)日：2020-08-11
申请号：US16805782
申请日：2020-03-01
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：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：US12111479B2
公开(公告)日：2024-10-08
申请号：US17414403
申请日：2020-09-15
Applicant: Lumus Ltd.
Inventor： Tsion Eisenfeld , Ronen Chriki
CPC classification number: G02B27/14 , G02B27/0172 , G02B2027/0125
Abstract: An optical system for displaying an image includes a light-guide optical element (LOE) having a coupling-in region and a propagation region, a coupling-out configuration associated with the propagation region of the LOE, an image projector for generating image illumination corresponding to a collimated image, and a beam-multiplication configuration external to the LOE. The beam-multiplier is a transparent plate bonded to the LOE adjacent to the coupling-in region. The transparent plate has a partially-reflective surface between the LOE and the plate, and a reflector at the opposite surface. The partially-reflective surface and the reflector multiply the beam from the projector so as to fully illuminate the propagation region of the LOE with both the collimated image and a conjugate of the collimated image.
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公开(公告)号：US12105279B2
公开(公告)日：2024-10-01
申请号：US17427963
申请日：2020-10-25
Applicant: Lumus Ltd.
Inventor： Shimon Grabarnik , Tsion Eisenfeld , Eitan Ronen , Ronen Chriki
CPC classification number: G02B27/0081 , G02B3/0056 , G02B3/06 , G02B27/0172 , G02B27/285 , G02B2027/011
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：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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