Patents Assigned to Lumus Ltd.
  • Patent number: 10884173
    Abstract: A near eye display including: a first optical waveguide having a direction of elongation, at least one pair of parallel faces, and a first coupling-out mechanism; a second optical waveguide having an input aperture, a pair of parallel faces, and a second coupling out-mechanism; an optical coupling between the first optical waveguide and the second waveguide, the optical coupling including at least an air gap configured to enable total internal reflection within the first waveguide, and an interface window, the interface window comprising a transparent optical element with a refractive index substantially the same as a refractive index of the second optical waveguide; and wherein at least a portion of the interface window projects beyond the input aperture of the second optical waveguide such that undesired light exiting the first waveguide is prevented from entering the second waveguide.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: January 5, 2021
    Assignee: Lumus Ltd.
    Inventors: Yochay Danziger, Naamah Levin
  • Patent number: 10869024
    Abstract: Binocular augmented reality display devices and corresponding methods allow alignment calibration to be performed by an end user. According to one approach, a camera is positioned to have a field of view which includes simultaneously part of a projected image from the left-eye display and part of a projected image from the right-eye display. By projecting via each display at least part of a calibration image and identifying within the camera-sampled image right-field and left-field alignment features, an alignment correction can be derived. Alternative approaches employ correlation of images sampled by forward-looking cameras rigidly associated with the respective right-eye and left-eye display units, or require a user to input a manual adjustment for aligning transversely-swapped camera images with the real world view.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: December 15, 2020
    Assignee: Lumus Ltd.
    Inventor: Yochay Danziger
  • Patent number: 10830938
    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.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: November 10, 2020
    Assignee: Lumus Ltd.
    Inventor: Tsion Eisenfeld
  • Patent number: 10782532
    Abstract: There is provided an optical system, including a light-transmitting substrate (20) having at least two external major surfaces and edges, an optical element for coupling light waves into the substrate (20) by internal reflection, at least one partially reflecting surface located in the substrate (20), for coupling light waves out of the substrate (20), at least one transparent air gap film (110) including a base (112) and a hyperfine structure (111) defining a relief formation, constructed on the base, wherein the air gap film is attached to one of the major surfaces of the substrate (20), with the relief formation facing the substrate (20) defining an interface plane (58), so that the light waves coupled inside the substrate (20) are substantially totally reflected from the interface plane (58).
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: September 22, 2020
    Assignee: Lumus Ltd.
    Inventors: Yaakov Amitai, Yuval Ofir, Elad Mor
  • Patent number: 10732415
    Abstract: Optical systems, including a mechanical body, a display source, a light-transmitting substrate, an optical device, an image processing unit and an image capturing device. The light-transmitting substrate is in communication with the mechanical body. The optical device couples light waves from the display source into the light-transmitting substrate by total internal reflection. The image processing unit is linked to the display source and is in communication with the mechanical body. The image capturing unit is linked to the image processing unit and is in communication with the mechanical body and has a user controllable zoom position.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: August 4, 2020
    Assignee: Lumus Ltd.
    Inventor: Yaakov Amitai
  • Patent number: 10684403
    Abstract: An optical assembly for optical aperture expansion combines facet reflective technology with diffractive technology. At least two diffractive components having opposite optical power (matching) are used, so that chromatic dispersion introduced by the first diffractive component will then be cancelled by the second diffractive component. The two diffractive components are used in combination with a reflective optical component to achieve more efficient aperture expansion (for near eye display), reducing distortions and noise, while also reducing design constraints on the system and individual components, as compared to conventional techniques. The assembly eliminates and/or reduces the need for polarization management, while enabling wider field of view. In addition, embodiments can have reduced nonuniformity, as compared to conventional single technology implementations, since the distortion patterns of the two technologies do not correlate.
    Type: Grant
    Filed: October 13, 2019
    Date of Patent: June 16, 2020
    Assignee: Lumus Ltd.
    Inventor: Yochay Danziger
  • Patent number: 10598937
    Abstract: There is provided an optical system, including a light-transmitting substrate having at least two major surfaces parallel to each other edges, and an optical device for coupling light into the substrate by total internal reflection. The device includes a polarization sensitive reflecting surface.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: March 24, 2020
    Assignee: Lumus Ltd.
    Inventor: Yaakov Amitai
  • Patent number: 10571636
    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.
    Type: Grant
    Filed: May 26, 2019
    Date of Patent: February 25, 2020
    Assignee: Lumus Ltd.
    Inventor: Jonathan Gelberg
  • Patent number: 10564417
    Abstract: An optical aperture multiplier includes a first optical waveguide (10) having a rectangular cross-section and including partially reflecting surfaces (40) at an oblique angle to a direction of elongation of the waveguide. A second optical waveguide (20), also including partially reflecting surfaces (45) at an oblique angle, is optically coupled with the first optical waveguide (10). An image coupled into the first optical waveguide with an initial direction of propagation at an oblique coupling angle advances by four-fold internal reflection along the first optical waveguide, with a proportion of intensity of the image reflected at the partially reflecting surfaces so as to be coupled into the second optical waveguide, and then propagates through two-fold reflection within the second optical waveguide, with a proportion of intensity of the image reflected at the partially reflecting surfaces so as to be directed outwards from one of the parallel faces as a visible image.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: February 18, 2020
    Assignee: Lumus Ltd.
    Inventor: Yochay Danziger
  • Patent number: 10551544
    Abstract: An optical device includes a lightguide having a first pair of external surfaces parallel to each other, and at least two sets of facets. Each of the sets including a plurality of partially reflecting facets parallel to each other, and between the first pair of external surfaces. In each of the sets of facets, the respective facets are at an oblique angle relative to the first pair of external surfaces, and at a non-parallel angle relative to another of the sets of facets. The optical device is particularly suited for optical aperture expansion.
    Type: Grant
    Filed: May 13, 2018
    Date of Patent: February 4, 2020
    Assignee: Lumus Ltd.
    Inventors: Yochay Danziger, Elad Axel Sharlin
  • Patent number: 10520731
    Abstract: There is provided an optical system, including a light-transmitting substrate (20) having at least two external major surfaces and edges, an optical element for coupling light waves into the substrate (20) by internal reflection, at least one partially reflecting surface located in the substrate (20), for coupling light waves out of the substrate (20), at least one transparent air gap film (110) including a base (112) and a hyperfine structure (111) defining a relief formation, constructed on the base, wherein the air gap film is attached to one of the major surfaces of the substrate (20), with the relief formation facing the substrate (20) defining an interface plane (58), so that the light waves coupled inside the substrate (20) are substantially totally reflected from the interface plane (58).
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: December 31, 2019
    Assignee: Lumus Ltd.
    Inventors: Yaakov Amitai, Yuval Ofir, Elad Mor
  • Patent number: 10520732
    Abstract: Head-mounted display with an eye-tracking system and including a light-transmitting substrate (20) having two major surfaces and edges, optical means for coupling light into said substrate (20) by total internal reflection, partially-reflecting surfaces (22a-22c) carried by the substrate (20) that are not parallel with the major surfaces of the substrate (20), a near-infrared light source (78) and a display source (92) projecting within the photopic spectrum, wherein light from the light source (78) and light from the display source (92) are coupled into the substrate (20) by total internal reflection.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: December 31, 2019
    Assignee: Lumus Ltd.
    Inventor: Yaakov Amitai
  • Patent number: 10506220
    Abstract: Binocular augmented reality display devices and corresponding methods allow alignment calibration to be performed by an end user. According to one approach, a camera is positioned to have a field of view which includes simultaneously part of a projected image from the left-eye display and part of a projected image from the right-eye display. By projecting via each display at least part of a calibration image and identifying within the camera-sampled image right-field and left-field alignment features, an alignment correction can be derived. Alternative approaches employ correlation of images sampled by forward-looking cameras rigidly associated with the respective right-eye and left-eye display units, or require a user to input a manual adjustment for aligning transversely-swapped camera images with the real world view.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: December 10, 2019
    Assignee: Lumus Ltd.
    Inventor: Yochay Danziger
  • Patent number: 10481319
    Abstract: Specific management of configuration of overlap of facets reduces non-uniformity in an image outcoupled toward a nominal point of observation. A waveguide including at least two parallel surfaces, first, middle, and last partially reflecting facets are configured such that in a geometrical projection of the facets onto one of the surfaces the facets overlap, preferably with adjacent facets overlapping and non-adjacent facets starts and ends coinciding along at least a portion of the waveguide.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: November 19, 2019
    Assignee: Lumus Ltd.
    Inventors: Yochay Danziger, Tsion Axel Eisenfeld
  • Patent number: 10473841
    Abstract: An optical assembly for optical aperture expansion combines facet reflective technology with diffractive technology. At least two diffractive components having opposite optical power (matching) are used, so that chromatic dispersion introduced by the first diffractive component will then be cancelled by the second diffractive component. The two diffractive components are used in combination with a reflective optical component to achieve more efficient aperture expansion (for near eye display), reducing distortions and noise, while also reducing design constraints on the system and individual components, as compared to conventional techniques. The assembly eliminates and/or reduces the need for polarization management, while enabling wider field of view. In addition, embodiments can have reduced nonuniformity, as compared to conventional single technology implementations, since the distortion patterns of the two technologies do not correlate.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: November 12, 2019
    Assignee: Lumus Ltd.
    Inventor: Yochay Danziger
  • Patent number: 9025253
    Abstract: An optical device, includes a light-transmitting substrate (20) having an input aperture and first and second major surfaces (26, 32) parallel to each other and edges, one partially reflecting surface located in the substrate which is non-parallel to the major surfaces of the substrate and an external optical arrangement having an output aperture for coupling light into the substrate by total internal reflection. The optical arrangement for coupling light having an output aperture optically attached to the input aperture of the substrate with the part of the substrate located next to the substrate input aperture, being substantially transparent.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: May 5, 2015
    Assignee: Lumus Ltd.
    Inventors: Mali Hadad, Yaakov Amitai
  • Patent number: 8902503
    Abstract: There is provided a light-guide, compact collimating optical device, including a light-guide having a light-waves entrance surface, a light-waves exit surface and a plurality of external surfaces, a light-waves reflecting surface carried by the light-guide at one of the external surfaces, two retardation plates carried by light-guides on a portion of the external surfaces, a light-waves polarizing beamsplitter disposed at an angle to one of the light-waves entrance or exit surfaces, and a light-waves collimating component covering a portion of one of the retardation plates. A system including the optical device and a substrate, is also provided.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: December 2, 2014
    Assignee: Lumus Ltd.
    Inventors: Yaakov Amitai, Naamah Levin, Mali Mansharof
  • Patent number: 8873150
    Abstract: There is provided an optical device, including a light waves-transmitting substrate having two major surfaces and edges, optical means for coupling light into the means for coupling light into the substrate by total internal reflection, and plurality of partially reflecting surfaces (22a, 22b) carried by the substrate wherein the partially reflecting surfaces (22a, 22b) are parallel to each other and are not parallel to any of the edges of the substrate, and wherein one or more of the partially reflecting surfaces (22a, 22b) is an anisotropic surface.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: October 28, 2014
    Assignee: Lumus Ltd.
    Inventor: Yaakov Amitai
  • Patent number: 8861081
    Abstract: There is provided a light-guide, compact collimating optical device, including a light-guide having a light-waves entrance surface, a light-waves exit surface and a plurality of external surfaces, a light-waves reflecting surface carried by the light-guide at one of the external surfaces, two retardation plates carried by light-guides on a portion of the external surfaces, a light-waves polarizing beamsplitter disposed at an angle to one of the light-waves entrance or exit surfaces, and a light-waves collimating component covering a portion of one of the retardation plates. A system including the optical device and a substrate, is also provided.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: October 14, 2014
    Assignee: Lumus Ltd
    Inventors: Mali Mansharof, Naamah Levin, Yaakov Amitai
  • Patent number: 8810914
    Abstract: There is provided a light-guide, compact collimating optical device, including a light-guide having a light-waves entrance surface, a light-waves exit surface and a plurality of external surfaces, a light-waves reflecting surface carried by the light-guide at one of the external surfaces, two retardation plates carried by light-guides on a portion of the external surfaces, a light-waves polarizing beamsplitter disposed at an angle to one of the light-waves entrance or exit surfaces, and a light-waves collimating component covering a portion of one of the retardation plates. A system including the optical device and a substrate, is also provided.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: August 19, 2014
    Assignee: Lumus Ltd.
    Inventor: Yaakov Amitai