# US 10,321,105 B2 · Image and wave field projection through diffusive media > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,321,105 B2 - Document ID: US10321105B2 - Status: Granted - Kind: B2 - Application number: 14/814,443 - Filed: 2015-07-30 - Published: 2016-02-04 - Granted: 2019-06-11 - Earliest claimed: 2014-07-31 - Assignees: Vuzix Corporation - Applicants: Vuzix Corporation - Inventors: Stephen P. McGrew - Web page: https://patentgrep.com/patent/US10321105B2 ## CPC - H04N 9/3185: {Geometric adjustment, e.g. keystone or convergence (optical or mechanical adjustment of convergence H04N9/317; using scanning means H04N3/22; optical or mechanical adjustments of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/14)} - G02B 27/0103: {comprising holographic elements} - G02B 27/0172: {characterised by optical features} - G03H 1/28: superimposed holograms only - G02B 2027/013: {comprising a combiner of particular shape, e.g. curvature} - G02B 2027/0174: {holographic} - G02B 2027/0178: {Eyeglass type (eyeglass details G02C)} - G03H 2001/0434: {In situ recording when the hologram is recorded within the device used for reconstruction} - G03H 2001/0439: {for recording Holographic Optical Element [HOE]} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - 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 Methods and systems for projecting wave fields use a diffusing medium, a wavefront shaper, an illumination source, and a control system. A system for projecting an object wave field into a projection volume includes a wave scatterer, a wave field projector configured to project a wave field onto the wave scatterer, and a controller coupled to the wave field projector. The controller is configured to cause the wave field projector to project a wave field that, upon interacting with the wave scatterer, is redirected to form an object wave field that forms a predetermined pattern in the projection volume. ## Claims ### Claim 1 A system for projecting an object wave field into a projection volume, comprising: a wave scatterer that at least quasi-randomly redirects local portions of incident wave fronts; a wave field projector configured to project a range of pre-distorted wave fields onto the wave scatterer; and, a controller coupled to the wave field projector, wherein the controller is configured to cause the wave field projector to project the pre-distorted wave fields so that, upon interacting with the wave scatterer, each of the pre-distorted wave fields is reshaped to form an object wave field that forms a predetermined pattern in the projection volume. ### Claim 2 (depends on 1) The system of claim 1, wherein: the wave field projector comprises a light field projector, the wave scatterer comprises a light scatterer, and the object wave field comprises an object light field. ### Claim 3 (depends on 2) A three-dimensional image projector comprising the system of claim 2, wherein the object light field forms a three-dimensional image. ### Claim 4 (depends on 2) A camouflage system comprising the system of claim 2. ### Claim 5 (depends on 2) A heads-up display comprising the system of claim 2. ### Claim 6 (depends on 5) The heads-up display of claim 5, wherein the light scatterer comprises a volume hologram configured to scatter light of a plurality of predetermined wavelengths, and wherein the light field projector is configured to project a light field comprising the predetermined wavelengths. ### Claim 7 (depends on 1) An acoustic surgical system comprising the system of claim 1, wherein: the wave field projector comprises an acoustic field projector; the wave scatterer comprises an acoustic diffuser; and the object wave field comprises an object acoustic field. ### Claim 8 A near-eye display, comprising: a waveguide; a holographic element comprising a plurality of holographic components in different positions along the waveguide; a light field projector configured to project a first light field into the waveguide via an optical coupler for propagation to the holographic components; and a controller coupled to the light field projector, wherein the controller is configured to determine the first light field and to cause the light field projector to project the first light field into the waveguide as a plurality of propagating modes, wherein each of the holographic components redirects a different one of the propagating modes of redirects the first light field from the different positions along the waveguide to form a second light field directed into an eyebox, and wherein the second light field is perceptible within the eyebox by a viewer's eye as a virtual image at a distance from the eye and the holographic element. ### Claim 9 (depends on 8) The near-eye display of claim 8, wherein the waveguide is a flat or curved slab of translucent material. ### Claim 10 (depends on 8) The near-eye display of claim 8, wherein the holographic element is configured to redirect light of a predetermined color and transmit light of other colors without substantial redirection. ### Claim 11 (depends on 8) The near-eye display of claim 8, wherein the second light field further forms a three-dimensional image. ### Claim 12 (depends on 8) An eyewear assembly comprising the near-eye display of claim 8, the eyewear system assembly further comprising: a frame configured to be worn on the head of the viewer, the frame including first and second rims with lenses affixed therein, and first and second temple arms extending away from the first and second rims. ### Claim 13 (depends on 12) The eyewear assembly of claim 12, wherein the waveguide and the holographic element is integrated into at least one of the first and second lenses. ### Claim 14 (depends on 12) The eyewear assembly of claim 12, wherein the light field projector and the controller are integrated into one of the first and second temple arms. ### Claim 15 (depends on 12) The eyewear assembly of claim 12, further comprising a second near-eye display. ### Claim 16 (depends on 1) The system of claim 1, wherein the predetermined pattern comprises a plurality of voxels and each of the projected pre-distorted wave fields is a linear superposition of individual wave fields required to form the respective voxels upon interacting with the wave scatterer. ### Claim 17 (depends on 2) The system of claim 2 in which the predetermined pattern is an image comprising a plurality of voxels within the projection volume, and each of the pre-distorted wave fields projected by the light field projector comprises a plurality of sub-frame light fields that are sequentially projected for illuminating different sets of voxels within the projection volume. ### Claim 18 (depends on 2) The system of claim 2 in which the predetermined pattern encodes a virtual image that is viewable within an eyebox, and each of the pre-distorted wave fields is reshaped by the light scatterer to form the virtual image that is viewable within the eyebox.