# US 2016/0259169 A1 · Wearable display system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0259169 A1 - Document ID: US20160259169A1 - Status: Published application - Kind: A1 - Application number: 15/058,739 - Filed: 2016-03-02 - Published: 2016-09-08 - Earliest claimed: 2015-03-02 - Assignees: Lockheed Martin Corporation - Applicants: Lockheed Martin Corporation - Inventors: David A. Smith; Patrick J. Goergen - Web page: https://patentgrep.com/patent/US20160259169A1 ## CPC - G02B 27/028: {characterised by the supporting structure} - G02B 3/08: with discontinuous faces, e.g. Fresnel lens {(diffractive Fresnel lenses G02B5/1876)} - G02B 27/0172: {characterised by optical features} - G02B 30/34: Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. three-dimensional [3D] slide viewers - G02C 11/10: {Electronic devices other than hearing aids} - H04N 13/344: with head-mounted left-right displays - G02B 2027/0136: {with a single image source for both eyes} - G02C 2202/20: Diffractive and Fresnel lenses or lens portions - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A wearable display system has a first lens sub-assembly defining a first optical path and a second lens sub-assembly defining a second optical path. The first and second lens sub-assemblies are disposed in a frame in respective first and second lens-holding sub-assemblies. The frame also has a device holder configured to maintain a display of a device in the first and second optical paths. The display can be maintained within a predetermined range of distances and angles with respect to the first and second lens sub-assemblies. This arrangement permits the display, such as, for example, a smartphone display, independently to provide a specific image to each eye of a user. For example, different images can be independently provided to each eye from different portions of a common display, thereby enabling the user to perceive a three-dimensional image. ## Claims ### Claim 1 A wearable display system comprising: a first lens sub-assembly defining a first optical path; a second lens sub-assembly defining a second optical path; and a frame comprising: a lens-holding sub-assembly comprising: a first lens holder configured to hold the first lens sub-assembly; a second lens holder configured to hold the second lens sub-assembly; and a bridge coupled between the first lens holder and the second lens holder; and a device holder configured to: maintain a display of a device in the first optical path and in the second optical path, maintain the display within a predetermined range of distances with respect to the first lens sub-assembly and the second lens sub-assembly, and maintain the display within a predetermined range of angles with respect to the first lens sub-assembly and the second lens sub-assembly. ### Claim 2 (depends on 1) The wearable display system of claim 1 wherein the first lens sub-assembly comprises a first Fresnel lens defining the first optical path, and the second lens sub-assembly comprises a second Fresnel lens defining the second optical path. ### Claim 3 (depends on 2) The wearable display system of claim 2 wherein the first Fresnel lens comprises a plurality of first Fresnel lenses defining the first optical path, and the second Fresnel lens comprises a plurality of second Fresnel lenses defining the second optical path. ### Claim 4 (depends on 3) The wearable display system of claim 3 wherein the plurality of first Fresnel lenses is configured to refract light twice as light passes through at least two first Fresnel lenses along the first optical path, and the plurality of second Fresnel lenses is configured to refract light twice as light passes through the at least two second Fresnel lenses along the second optical path. ### Claim 5 (depends on 1) The wearable display system of claim 1, wherein the device holder is configured to maintain the display in the first optical path and in the second optical path such that: a first portion of the display is maintained in the first optical path, and a second portion of the display is maintained in the second optical path, wherein the first portion of the display does not overlap with the second portion of the display. ### Claim 6 (depends on 1) The wearable display system of claim 1 wherein the device holder comprises: a first support member comprising a first device grip member configured to grip a first portion of the device to maintain the display in the first optical path and in the second optical path; and a second support member comprising a second device grip member configured to grip a second portion of the device to maintain the display in the first optical path and in the second optical path. ### Claim 7 (depends on 6) The wearable display system of claim 6 wherein the first support member is hingedly coupled to the first lens holder and the second support member is hingedly coupled to the second lens holder. ### Claim 8 (depends on 7) The wearable display system of claim 7 wherein the device holder has a folded configuration and an unfolded configuration, wherein in the folded configuration each of the lens-holding sub-assembly, the first support member, and the second support member are substantially parallel to each other, and wherein in the unfolded configuration the first support member and the second support member are substantially parallel to each other and are substantially perpendicular to the lens-holding sub-assembly. ### Claim 9 (depends on 8) The wearable display system of claim 8 wherein the frame is configured to be worn by a user such that, while the frame is being worn, the lens-holding arrangement is the predetermined range of distances from a first eye and a second eye of the user, wherein the first eye of the user is in the first optical path, and the second eye of the user is in the second optical path. ### Claim 10 (depends on 9) The wearable display system of claim 9 wherein the frame further comprises a peak attachment member configured to be coupled to a peak of a hat while the frame is being worn. ### Claim 11 (depends on 10) The wearable display system of claim 10 wherein the peak attachment member comprises a first arm and a second arm coupled to the device holder. ### Claim 12 (depends on 9) The wearable display system of claim 9, wherein the frame further comprises a head support member configured to extend around opposite sides of a head of the user while the frame is being worn to secure the frame to the head of the user. ### Claim 13 (depends on 12) The wearable display system of claim 12, wherein the frame further comprises a strap configured to extend around the head of the user while the frame is being worn to secure the frame to the head of the user. ### Claim 14 (depends on 6) The wearable display system of claim 6, wherein the first device grip member comprises a first lower support and the second device grip member comprises a second lower support, the first lower support and the second lower support configured to support the display device against a downward force. ### Claim 15 (depends on 14) The wearable display system of claim 14, wherein the first device grip member comprises a first upper support and the second device grip member comprises a second upper support, the first upper support and the second upper support configured to support the display device against an upward force. ### Claim 16 A method of using a wearable display system comprising: positioning a frame of the wearable display system in a field of view of a user, the frame comprising: a lens-holding sub-assembly comprising: a first lens holder holding a first lens sub-assembly; a second lens holder holding a second lens sub-assembly; and a bridge coupled between the first lens holder and the second lens holder; disposing a display of a device in a device holder of the wearable display system, wherein the display is maintained within a predetermined range of distances with respect to the first lens sub-assembly and the second lens sub-assembly, the display is maintained within a predetermined range of angles with respect to the first lens sub-assembly and the second lens sub-assembly, the first lens sub-assembly defines a first optical path between a first eye of the user and the display; and the second lens sub-assembly defines a second optical path between a second eye of the user and the display. ### Claim 17 (depends on 16) The method of claim 16, wherein the first lens sub-assembly comprises a first Fresnel lens defining the first optical path, and the second lens sub-assembly comprises a second Fresnel lens defining the second optical path. ### Claim 18 (depends on 17) The method of claim 17, wherein the first Fresnel lens comprises a plurality of first Fresnel lenses defining the first optical path, and the second Fresnel lens comprises a plurality of second Fresnel lenses defining the second optical path, wherein light along the first optical path is refracted at least twice by the plurality of first Fresnel lenses, and light along the second optical path is refracted at least twice by the plurality of second Fresnel lenses. ### Claim 19 (depends on 16) The method of claim 16, wherein disposing the display of the device in the device holder further comprises: maintaining a first portion of the display in the first optical path, and maintaining a second portion of the display in the second optical path, wherein the first portion of the display does not overlap with the second portion of the display. ### Claim 20 (depends on 16) The method of claim 16, wherein disposing the display of the device in the device holder further comprises: gripping a first portion of the device with a first device grip member of a first support member to maintain the display in the first optical path and in the second optical path; and gripping a second portion of the device with a second device grip member of a second support member to maintain the display in the first optical path and in the second optical path.