# US 11,307,414 B2 · Near-eye display system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,307,414 B2 - Document ID: US11307414B2 - Status: Granted - Kind: B2 - Application number: 16/363,275 - Filed: 2019-03-25 - Published: 2019-07-18 - Granted: 2022-04-19 - Earliest claimed: 2014-10-20 - Assignees: Intel Corporation - Applicants: Intel Corporation - Inventors: Hongbae Sam Park; Reynald Antoine Hoskinson; Hamid Abdollahi; Boris Stoeber - Web page: https://patentgrep.com/patent/US11307414B2 ## CPC - G02B 27/0172: {characterised by optical features} - B60K 35/22: Display screens - G02B 3/0006: {Arrays (G02B3/02, G02B5/188 take precedence)} - G02B 27/01: Head-up displays - G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)} - G02B 2027/0127: {comprising devices increasing the depth of field} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES ## Abstract The present disclosure provides a near-eye display system for generating a virtual image of a display, including: a display, a first lens array comprising a plurality of concave microlenses having a first pitch, and a second lens array positioned in front of the first lens array, the second lens array comprising a plurality of convex microlenses having a second pitch, wherein the first lens array is positioned on an optical path between the display and the second lens array, and wherein the first lens array has a focal plane at the display and the second lens array has a focal plane at a virtual image plane of the first lens array. ## Claims ### Claim 1 A near-eye display (NED) system for collimating light into a user's eye while substantially maintaining the user's field of view (FOV), the system comprising: a display; a first microlens array comprising a plurality of microlenses having a first pitch; and, a second microlens array positioned in front of the first microlens array, the second microlens array comprising a plurality of microlenses having a second pitch and configured to sit proximally to the user's eye; wherein, the first microlens array is disposed in an optical path between the display and the second microlens lens array; further wherein the first microlens array has a focal plane at the display and the second microlens array has a focal plane at a virtual image plane of the first microlens array. ### Claim 2 (depends on 1) The near-eye display system of claim 1, wherein the pitch of the first microlens array is not equal to the pitch of the second microlens array, such that the virtual image is magnified. ### Claim 3 (depends on 1) The near-eye display system of claim 1, wherein the display, the first microlens array and the second microlens array have the same optical axis. ### Claim 4 (depends on 1) The near-eye display system of claim 1, wherein one of the first or second microlens arrays comprises diffractive grating microlenses. ### Claim 5 (depends on 1) The near-eye display system of claim 1, wherein one of the first or second microlens arrays comprises Fresnel microlenses. ### Claim 6 (depends on 1) The near-eye display system of claim 1, wherein the microlenses of the first microlens array are biconcave. ### Claim 7 (depends on 1) The near-eye display system of claim 1, wherein the microlenses of the second microlens array are biconvex. ### Claim 8 (depends on 1) The near-eye display system of claim 1, wherein the microlenses of the first and second microlens arrays are circular microlenses arranged in an orthogonal arrangement. ### Claim 9 (depends on 1) The near-eye display system of claim 1, wherein the microlenses of the first and second microlens arrays are circular microlenses arranged in a hexagonal arrangement. ### Claim 10 (depends on 1) The near-eye display system of claim 1, wherein a non-microlens area of one of the first or second microlens arrays comprises an opaque material. ### Claim 11 (depends on 1) The near-eye display system of claim 1, wherein the pitch of the first microlens array is not equal to the pitch of the second microlens array, such that the virtual image is collimated. ### Claim 12 (depends on 11) The near-eye display system of claim 11, wherein the system has a focal length between 5 mm and 9 mm. ### Claim 13 (depends on 1) The near-eye display system of claim 1, wherein arrangement of the first and second microlens arrays are one of: one convex microlens array and one concave microlens array; two concave microlens arrays; and, two convex microlens arrays. ### Claim 14 (depends on 13) The near-eye display system of claim 13, wherein thickness of the first and second microlens arrays are between 2 mm and 4 mm. ### Claim 15 A wearable apparatus for magnifying light into a user's eye while substantially maintaining the user's field of view (FOV), the apparatus comprising: a first microlens array comprising a plurality of microlenses having a first pitch; and, a second microlens array disposed between the first microlens array and the user's eye, the second microlens array comprising a plurality of microlenses having a second pitch and configured to be disposed less than a distance from the user's eye, the distance being less than 10 cm; wherein, the apparatus is configured to generate a virtual image further away from the distance to eye so that the image can be comfortably viewed. ### Claim 16 (depends on 15) The wearable apparatus of claim 15, wherein the pitch of the first microlens array is not equal to the pitch of the second microlens array, such that the virtual image is magnified. ### Claim 17 (depends on 15) The wearable apparatus of claim 15, wherein the display, the first microlens array and the second microlens array have the same optical axis. ### Claim 18 (depends on 15) The wearable apparatus of claim 15, wherein one of the first or second microlens arrays comprises diffractive grating microlenses. ### Claim 19 (depends on 15) The wearable apparatus of claim 15, wherein one of the first or second microlens arrays comprises Fresnel microlenses. ### Claim 20 (depends on 15) The wearable apparatus of claim 15, wherein the microlenses of the first microlens array are biconcave. ### Claim 21 (depends on 15) The wearable apparatus of claim 15, wherein the microlenses of the second microlens array are biconvex. ### Claim 22 (depends on 16) The wearable apparatus of claim 16, wherein the wearable apparatus has a focal length between 5 mm and 9 mm. ### Claim 23 (depends on 15) The wearable apparatus of claim 15, wherein the arrangement of the first and second microlens arrays are one of: one convex microlens array and one concave microlens array; two concave microlens arrays; and, two convex microlens arrays. ### Claim 24 (depends on 23) The wearable apparatus of claim 23, wherein thickness of the first and second microlens arrays are between 2 mm and 4 mm. ### Claim 25 (depends on 15) The wearable apparatus of claim 15, further comprising a display and a beamsplitter, the beamsplitter disposed in an optical path between the display and second microlens array and configured to reflect an image from the display to the first microlens array, at least in part. ### Claim 26 A wearable near eye display (NED) for generating a virtual image further away from a user's eye so that the image can be comfortably viewed by the user, the NED comprising: a first microlens array comprising a plurality of microlenses having a first pitch; a second microlens array positioned in front of the first lens array, the second microlens array comprising a plurality of microlenses having a second pitch; a transparent beam redirection element; and, a display; wherein the display is positioned generally perpendicular to the first and second microlens arrays; wherein the first microlens array is positioned on an optical path between the display and the second microlens array; and, further wherein, the transparent beam redirection element is positioned on the optical path between the display and the first microlens array and the first and second microlens arrays are positioned between transparent beam redirection element and the user's eye. ### Claim 27 (depends on 26) The wearable apparatus of claim 26, wherein the transparent beam redirection element is embedded within a transparent optical medium, wherein the transparent beam redirection element is positioned on the optical path between the second microlens array and the user's eye. ### Claim 28 (depends on 26) The wearable apparatus of claim 26, further comprising a null lens which is positioned on the opposite side the transparent beam redirection element from the first and second microlens arrays and the null lens is configured to negate the optical effect of the first and microlens arrays.