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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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公开(公告)号：US11226261B2
公开(公告)日：2022-01-18
申请号：US16769285
申请日：2018-12-02
Applicant: Lumus Ltd.
Inventor： Lilya Lobachinsky , Yochay Danziger , Nitzan Livneh , Jonathan Gelberg
Abstract: At various positions in an eye motion box (EMB) an output image from an optical device can be captured and analyzed for detection and evaluation of image propagation via the optical device. Optical testing along a specific axis can evaluate optical engine transfer function uniformity across facet's active area, detect the existence and degree of “smearing” of a projected image from an optical device, and detect the existence and degree of a “white stripes” (WS) phenomenon related to scattering and diffraction in the wedge-to-LOE interface. A variety of metrics can be derived for quality control and feedback into the production system, and for disposition of the optical devices.
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公开(公告)号：US12117614B2
公开(公告)日：2024-10-15
申请号：US17265586
申请日：2020-05-06
Applicant: Lumus Ltd.
Inventor： Jonathan Gelberg , Tsion Eisenfeld
CPC classification number: G02B27/0172 , G02B27/145
Abstract: A light-guide optical element (LOE) for simultaneous viewing, of a real scene and of a projected image introduced into the LOE, having a transparent block along which light conveying a projected image propagates by internal reflection, and a plurality of internal partially reflecting surfaces obliquely oriented and configured so as to couple-out a part of said light, wherein the reflectance of each of the partially reflecting surfaces is such that the total power of the light that is coupled out is less than one third of the total power of the light that is introduced into the LOE. In some embodiments, the light of the projected image is polarized and the reflectance of the partially reflecting surfaces for light polarized in an orthogonal orientation is substantially reduced. In some embodiments, the reflectance of the partially reflecting surfaces for light not reaching the viewer is substantially reduced.
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公开(公告)号：US11714224B2
公开(公告)日：2023-08-01
申请号：US17948274
申请日：2022-09-20
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：US20200310024A1
公开(公告)日：2020-10-01
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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Patent Agency Ranking
公开(公告)号：US12099214B2
公开(公告)日：2024-09-24
申请号：US17268967
申请日：2019-08-26
Applicant: LUMUS LTD.
Inventor： Eitan Ronen , Yochay Danziger , Jonathan Gelberg , Tsion Eisenfeld , Amir Shapira
CPC classification number: G02B5/003 , G02B6/0035 , G02B27/0172 , G02B6/005 , G02B2027/012
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：US11940641B2
公开(公告)日：2024-03-26
申请号：US17642748
申请日：2020-09-14
Applicant: Lumus Ltd.
Inventor： Tsion Eisenfeld , Jonathan Gelberg
CPC classification number: G02B6/0008 , G02B6/0006 , G02B27/0172
Abstract: A light pipe includes at least two optical structures having different refractive indices. An interface between the two optical structures is oblique to a longitudinal axis of the light pipe such that an output ray from an output surface at a distal end of the light pipe is non-parallel to an input ray that is parallel to the longitudinal axis at an input surface at a proximal end of the light pipe. Light refracts inside the light pipe between the (at least) two optical structures altering the direction of an optical path of the light through the light pipe, thereby allowing higher degrees of freedom for the selection of the angle of deviation (folding angle) of the light pipe. By optimizing various parameters of the light pipe, a desired output optical axis angle (i.e., folding angle) can be achieved that suits the desired optical engine envelope.
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公开(公告)号：US20230341612A1
公开(公告)日：2023-10-26
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：US20230013376A1
公开(公告)日：2023-01-19
申请号：US17948274
申请日：2022-09-20
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：US10571636B2
公开(公告)日：2020-02-25
申请号：US16423014
申请日：2019-05-26
Applicant: LUMUS LTD
Inventor： Jonathan Gelberg
Abstract: A light-transmitting substrate has at least a first and a second major external surface. An electronic display source emanates light waves. A coupling-in optical arrangement couples light waves from the electronic display source into the light-transmitting substrate to effect total internal reflection of the coupled-in light waves between the major external surfaces of the light-transmitting substrate. An optical element is deployed in an optical path for light waves to traverse from the electronic display source into the light-transmitting substrate. The optical element defines a field curvature that causes light rays of the traversing light waves to diverge or converge. A lens is deployed in the optical path and reduces the field curvature. The electronic display source has a curvature that is matched to the reduced field curvature to counteract the divergence or convergence of the light rays caused by the reduced field curvature.
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