# US 10,481,554 B2 · Near-eye device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,481,554 B2 - Document ID: US10481554B2 - Status: Granted - Kind: B2 - Application number: 15/851,689 - Filed: 2017-12-21 - Published: 2018-07-19 - Granted: 2019-11-19 - Earliest claimed: 2013-04-12 - Assignees: Dualitas Ltd - Applicants: Dualitas Ltd. - Inventors: Jamieson Christmas; Dackson Masiyano - Web page: https://patentgrep.com/patent/US10481554B2 ## CPC - G03H 1/2294: {Addressing the hologram to an active spatial light modulator} - G02B 27/0172: {characterised by optical features} - G03H 1/06: using incoherent light - G03H 1/16: using Fourier transform ({G03H1/10}, G03H1/12, G03H1/14 take precedence; analogue computers G06G, e.g. G06G7/19) - G03H 1/2205: {using downstream optical component} - G02B 2027/0174: {holographic} - G03H 2001/0816: {Iterative algorithms} - G03H 2001/2284: {Superimposing the holobject with other visual information} - G03H 2225/32: Phase only - G03H 2227/02: Handheld portable device, e.g. holographic camera, mobile holographic display - G03H 2270/55: being an optical element, e.g. spectacles - 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}) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract There is provided a near-eye device for augmenting a real world view. The near-eye device comprises a spatial light modulator comprising an array of phase modulating elements arranged to apply a phase delay distribution to incident light. The device further comprises a beam combiner comprising a first optical input arranged to receive spatially modulated light from the spatial light modulator and a second optical input having a field of view of the real world. ## Claims ### Claim 1 A near-eye device comprising: a spatial light modulator comprising an array of light modulating elements arranged to apply a modulation comprising a phase delay distribution to incident light; a light source arranged to illuminate the spatial light modulator with the incident light; a beam combiner configured to combine spatially modulated light from the spatial light modulator received at a first optical input thereof with a field of view of the real world received at a second optical input thereof; and a processor configured to cause the spatial light modulator to modulate the incident light with phase data having a negative lensing effect and with holographic data representative of an image, wherein the lensing effect is such that the spatially modulated light received from the spatial light modulator by the beam combiner is diverging. ### Claim 2 (depends on 1) A near-eye device as claimed in claim 1, wherein the holographic data is a Fourier hologram. ### Claim 3 (depends on 2) A near-eye device as claimed in claim 2, configured such that that a user's eye performs a Fourier transform of the spatially modulated light such that the user sees a holographic reconstruction of the image. ### Claim 4 (depends on 1) A near-eye device as claimed in claim 1, wherein the holographic data is a Fresnel hologram. ### Claim 5 (depends on 4) A near-eye device as claimed in claim 4, wherein the spatially modulated light is arranged to form a holographic reconstruction of the image at a replay plane in the near-field. ### Claim 6 (depends on 1) A near-eye device as claimed in claim 1, wherein the processor is further configured to cause the spatial light modulator to modulate the incident light with data arranged to compensate for aberrations in other optical components of the near-eye device. ### Claim 7 (depends on 1) A near-eye device as claimed in claim 1, wherein the beam combiner further comprises an optical output arranged to combine the light received on the first optical input with light received on the second optical input. ### Claim 8 (depends on 7) A near-eye device as claimed claim 7, wherein the optical output is arranged to at least partially overlay the light received on the first optical input with the light received on the second optical input. ### Claim 9 (depends on 7) A near-eye device as claimed claim 7, arranged for a user of the near-eye device to receive the optical output from the beam combiner. ### Claim 10 (depends on 1) A near-eye device as claimed claim 1, configured such that a holographic reconstruction of the image augments the field of view of the real world. ### Claim 11 (depends on 1) A near-eye device as claimed in claim 1, wherein the light source is arranged to illuminate the spatial light modulator with a plane wave of light. ### Claim 12 (depends on 1) A near-eye device as claimed in claim 1, wherein the near-eye device is a pair of goggles or glasses. ### Claim 13 (depends on 1) A system as claimed in claim 1, wherein the spatial light modulator is displaying a phase delay distribution that modulates incident light with phase data having a lensing effect and with holographic data representative of an image, wherein the lensing effect is such that the spatially modulated light received from the spatial light modulator by the beam combiner is diverging. ### Claim 14 A method of providing augmented reality using a near-eye device, the method comprising: providing holographic data representative of an image and phase data having a lensing effect; spatially modulating light with the holographic data representative of the image and the phase data having the lensing effect to form spatially-modulated light; combining the spatially-modulated light with a field of view of the real world using a beam combiner; and providing the combined spatially-modulated light to a user's eye, wherein the lensing effect is negative such that the spatially modulated light received from the spatial light modulator by the beam combined is diverging. ### Claim 15 (depends on 14) A method of providing augmented reality as claimed in claim 14, wherein the holographic data is a Fourier hologram. ### Claim 16 (depends on 14) A method of providing augmented reality as claimed in claim 14, wherein the holographic data is a Fresnel hologram. ### Claim 17 (depends on 14) A method of providing augmented reality as claimed in claim 14, further comprising: providing data arranged to compensate for aberrations in optical components of the near-eye device; and compensating for aberrations in the optical components of the near-eye device. ### Claim 18 (depends on 14) A method as claimed in claim 14, configured such that that the user's eye performs a Fourier transform of the spatially modulated light such that the user sees a holographic reconstruction of the image. ### Claim 19 (depends on 14) A method as claimed in claim 14, further comprising illuminating the spatial light modulator with a plane wave of light. ### Claim 20 (depends on 14) A method as claimed claim 14, wherein the combining is performed to at least partially overlay the spatially-modulated light with the field of view of the real world.