# US 8,786,687 B1 · Auto-stereoscopic display with lenticules and elongated light filters > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,786,687 B1 - Document ID: US8786687B1 - Status: Granted - Kind: B1 - Application number: 12/951,651 - Filed: 2010-11-22 - Granted: 2014-07-22 - Earliest claimed: 2010-11-22 - Assignees: Lockheed Martin Corporation - Applicants: David Alan Smith - Inventors: David Alan Smith - Web page: https://patentgrep.com/patent/US8786687B1 ## CPC - G02B 30/25: using polarisation techniques - G02B 30/27: involving lenticular arrays - H04N 13/305: using lenticular lenses, e.g. arrangements of cylindrical lenses - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract An auto-stereoscopic display which includes a screen substrate having a first face and a second face. A lenticular array having a plurality of lenticules extending in a first direction and a second direction is affixed to the first face. A plurality of first elongated light filters is affixed to the second face. The first elongated light filters extend parallel to the plurality of lenticules and are adapted to pass light waves having a first orientation. A plurality of second elongated light filters extending parallel to the plurality of lenticules is affixed to the second face and adapted to pass light waves having a second orientation. ## Claims ### Claim 1 A projection display, comprising: a screen substrate having a first face and a second face; a lenticular array comprising a plurality of lenticules extending in a first direction and a second direction, the lenticular array affixed to the first face, wherein each of the plurality of lenticules has a first width; a plurality of first elongated light filters extending parallel to the plurality of lenticules, affixed to the second face, and adapted to pass light waves having a first orientation received from a first projector, wherein each of the plurality of first elongated light filters has a second width that is about one-half of the first width; and a plurality of second elongated light filters extending parallel to the plurality of lenticules, affixed to the second face, and adapted to pass light waves having a second orientation received from a second projector concurrently with the light waves having the first orientation, wherein the second orientation is different from the first orientation, wherein each of the plurality of second elongated light filters has the second width, and wherein each of the plurality of first elongated light filters is adjacent to at least one of the plurality of second elongated light filters. ### Claim 2 (depends on 1) The projection display of claim 1, wherein ones of the plurality of first elongated light filters are in an alternating arrangement with ones of the plurality of second elongated light filters. ### Claim 3 (depends on 1) The projection display of claim 1, wherein the plurality of first elongated light filters and the plurality of second elongated light filters comprise a plurality of filter pairs, wherein each of the filter pairs comprises a first elongated light filter and a second elongated light filter. ### Claim 4 (depends on 3) The projection display of claim 3, wherein each of the plurality of filter pairs corresponds to one of the plurality of lenticules, and wherein each of the plurality of filter pairs is affixed to the second face such that a line perpendicular to the first face that extends through a center of any of the filter pairs extends through the corresponding one of the plurality of lenticules. ### Claim 5 (depends on 1) The projection display of claim 1, wherein the first orientation comprises a right-hand circularly polarized orientation, and the second orientation comprises a left-hand circularly polarized orientation. ### Claim 6 (depends on 1) The projection display of claim 1, wherein the projection display is a part of a system further comprising: a first light emitter adapted to emit the light waves having the first orientation; and a second light emitter adapted to emit the light waves having the second orientation. ### Claim 7 (depends on 6) The projection display of claim 6, wherein the first light emitter further comprises a first polarized filter that is adapted to emit the light waves having the first orientation, and the second light emitter further comprises a second polarized filter that is adapted to emit the light waves having the second orientation. ### Claim 8 (depends on 1) The projection display of claim 1, wherein the first orientation comprises a first polarized orientation, and wherein the plurality of first elongated light filters comprises polarized filters which are adapted to pass the light waves having the first polarized orientation and to block substantially all light waves having a polarized orientation that is different from the first polarized orientation. ### Claim 9 A method of providing a stereoscopic image to a projection display, comprising: projecting first light waves from a first projector comprising imagery associated with a first perspective of an image at the projection display, the first light waves having a first orientation, the projection display comprising: a first face and a second face; a lenticular array comprising a plurality of lenticules extending in a first direction and a second direction, the lenticular array affixed to the first face, wherein each of the plurality of lenticules has a first width; a plurality of first elongated light filters extending in the first direction and the second direction and affixed to the second face and adapted to pass the first light waves having the first orientation, wherein each of the plurality of first elongated light filters has a second width that is about one-half the first width; a plurality of second elongated light filters extending in the first direction and the second direction and affixed to the second face and adapted to pass light waves having a second orientation, wherein each of the plurality of second elongated light filters has the second width, and wherein each of the plurality of first elongated light filters is adjacent to at least one of the plurality of second elongated light filters; and projecting second light waves from a second projector comprising imagery associated with a second perspective of the image at the projection display, the second light waves having the second orientation and being projected concurrently with the first light waves having the first orientation. ### Claim 10 (depends on 9) The method of claim 9, wherein the first light waves and the second light waves are projected in a direction toward the second face. ### Claim 11 (depends on 9) The method of claim 9, wherein the stereoscopic image comprises a stereoscopic video. ### Claim 12 (depends on 11) The method of claim 11, wherein the stereoscopic video comprises a three-dimensional (3D) movie. ### Claim 13 (depends on 11) The method of claim 11, wherein the stereoscopic video comprises a computer simulation. ### Claim 14 (depends on 9) The method of claim 9, wherein ones of the plurality of first elongated light filters are in an alternating arrangement with ones of the plurality of second elongated light filters. ### Claim 15 A method of making a projection display, comprising: providing a screen substrate having a first face and a second face; affixing to the first face a lenticular array comprising a plurality of lenticules extending in a first direction and a second direction, the lenticular array affixed to the first face, wherein each of the plurality of lenticules has a first width; affixing to the second face a plurality of first elongated light filters extending in the first direction and the second direction and adapted to pass light waves having a first orientation received from a first projector, wherein each of the plurality of first elongated light filters has a second width that is about one-half the first width; and affixing to the second face a plurality of second elongated light filters extending in the first direction and the second direction and adapted to pass light waves having a second orientation received from a second projector concurrently as the plurality of first elongated light filter pass the light waves having the first orientation, wherein each of the plurality of second elongated light filters has the second width, and wherein each of the plurality of first elongated light filters is adjacent to at least one of the plurality of second elongated light filters. ### Claim 16 (depends on 15) The method of claim 15, wherein affixing to the first face the lenticular array comprises forming the lenticular array on the first face. ### Claim 17 (depends on 15) The method of claim 15, wherein affixing to the second face the plurality of first elongated light filters comprises forming the first elongated light filters on the second face. ### Claim 18 (depends on 15) The method of claim 15, wherein the plurality of first elongated light filters and the plurality of second elongated light filters are affixed to the second face such that ones of the plurality of first elongated light filters are in an alternating arrangement with ones of the plurality of second elongated light filters.