# US 2019/0317261 A1 · Holographic Substrate-Guided Wave-Based See-Through Display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0317261 A1 - Document ID: US20190317261A1 - Status: Published application - Kind: A1 - Application number: 16/356,977 - Filed: 2019-03-18 - Published: 2019-10-17 - Earliest claimed: 2008-11-17 - Assignees: Luminit LLC - Applicants: Luminit, LLC - Inventors: Fedor Dimov; Tin Aye; Kevin Yu; Svetlana Soboleva; Khin Swe Yin; Myo Kyaw; Dmitry Voloschenko - Web page: https://patentgrep.com/patent/US20190317261A1 ## CPC - G02B 5/32: Holograms used as optical elements - G02B 5/188: {Plurality of such optical elements formed in or on a supporting substrate} - G02B 27/0172: {characterised by optical features} - G02B 6/00: Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings - G02B 6/34: utilising prism or grating {(G02B6/293 takes precedence)} - G02B 2027/0174: {holographic} - G03H 1/0408: {Total internal reflection [TIR] holograms, e.g. edge lit or substrate mode holograms} - G03H 2001/0439: {for recording Holographic Optical Element [HOE]} - G03H 2001/261: {in optical contact} - G03H 2210/63: Environment affecting the recording, e.g. underwater (G03H2001/0432 takes precedence) - G03H 2270/21: Curved bearing surface - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G03H: HOLOGRAPHIC PROCESSES OR APPARATUS (holograms, e.g. point holograms, used as ordinary optical elements G02B5/32; producing stereoscopic or other three-dimensional effects G02B30/00; diffraction-grating systems G02B27/44; systems using moiré fringes G02B27/60; optical logic elements G02F3/00; stereo-photography G03B35/00; photosensitive materials or processes for photographic purposes G03C; {stereo-photographic or similar processes G03C9/00}; apparatus for processing exposed photographic materials G03D; analogue computers performing mathematical operations with the aid of optical elements G06E3/00; authentication by radiation, of concealed information carried by holograms or diffraction gratings G06K19/16; holographic storage G11B7/0065, G11C13/04; {stereoscopic or other three dimensional effects in television systems H04N13/00}) ## Abstract A holographic substrate-guided wave-based see-through display can has a microdisplay, capable of emitting light in the form of an image. The microdisplay directs its output to a holographic optical element, capable of accepting the light in the form of an image. The microdisplay directs its output to a holographic optical element, capable of accepting the image from the microdisplay, and capable of transmitting the light. The holographic optical element couples its output to an elongate substrate, capable of accepting the light from the holographic lens at a first location, and transmitting the light along a length of the substrate by total internal reflection to a second location, the elongate substrate being capable of transmitting the accepted light from the second location. The substrate couples out what it receives to a transparent holographic optical element, capable of accepting the light transmitted from the substrate and transmitting it to a location outside of the holographic optical element as a viewable image. ## Claims ### Claim at position 1 1-5. (canceled) ### Claim 6 A holographic display comprising: (a) a wholly transparent or partially transparent substrate wherein the substrate comprises at least two substrate-guided-wave, Bragg holographic optical elements, each comprising a hologram wherein the holographic optical elements are attached to a surface of the substrate and wherein an index of refraction of the transparent substrate comprises a similar index of refraction of the holographic lenses; and (b) a light source positioned to illuminate an edge of the substrate. ### Claim 7 (depends on 6) The display of claim 6 wherein the substrate comprises at least one of glass, polycarbonate, acrylic, or quartz. ### Claim 8 (depends on 6) The display of claim 6 wherein the substrate comprises a thickness in the range of about 3 to about 6 mm. ### Claim 9 (depends on 6) The display of claim 6 wherein each holographic optical elements comprises at least one of glass, polycarbonate, acrylic, or quartz. ### Claim 10 (depends on 6) The display of claim 6 wherein the substrate and the holographic optical elements comprise a same material. ### Claim 11 (depends on 6) The display of claim 6 wherein the substrate comprises a first transparent region comprising a length that is greater than or equal to the length of the first holographic optical element on the surface of the plate, a second transparent region comprising a length that is greater than or equal to the length of the second holographic optical element on the surface of the plate, a viewing region comprising a length that is greater than or equal to the length of the second holographic optical element on the surface of the plate, and a transparent volume throughout the substrate. ### Claim 12 (depends on 6) The display of claim 6 wherein each holographic optical element is monochromatic or polychromatic. ### Claim 13 (depends on 6) The display of claim 6 wherein the at least two holographic optical elements are on a same surface of the substrate. ### Claim 14 (depends on 6) The display of claim 6 wherein the at least two holographic optical elements are on different surfaces of the substrate. ### Claim 15 (depends on 7) The display of claim 7 wherein the glass comprises flint glass or crown glass. ### Claim 16 (depends on 9) The display of claim 9 wherein the glass comprises flint glass or crown glass. ### Claim 17 (depends on 6) The display of claim 6 wherein the substrate comprises a tint. ### Claim 18 (depends on 6) The display of claim 6 wherein one or both of the holographic optical elements comprise optical power. ### Claim 19 (depends on 6) The display of claim 6 wherein one of the holographic optical elements comprises a holographic grating and another comprises a holographic optical element lens. ### Claim 20 (depends on 6) The display of claim 6 wherein the holograms couple light in the substrate at angles greater than or equal to a total internal reflection angle of the substrate and out-couple light that propagates along the substrate. ### Claim 21 (depends on 6) The display of claim 6 wherein the holograms diffract light in single diffraction order with a very high diffraction efficiency theoretically approaching 100%. ### Claim 22 (depends on 6) The display of claim 6 wherein the holograms couple light in the hologram to a substrate and convey the light along the length of the substrate then couple the light to an object outside of the substrate. ### Claim 23 (depends on 6) The display of claim 6 wherein each holographic optical element is polychromatic. ### Claim 24 A holographic display comprising: (a) a heads-up mounted display comprising a wholly transparent or partially transparent substrate coated on at least one surface with a reflective material wherein the substrate comprises at least two substrate-guided-wave, Bragg holographic optical elements, each comprising a hologram wherein the optical elements are attached to a surface of the substrate and wherein an index of refraction of the transparent substrate comprises a similar index of refraction of the holographic optical elements; and (b) a light source positioned to illuminate an edge of the substrate. ### Claim 25 (depends on 24) The display of claim 24 wherein the substrate comprises a flat or curved shape.