| US 11,815,683 B2 | ||
| Dimming shutter combining guest-host liquid crystal and photochromic materials for augmented reality applications | ||
| Jasmine Soria Sears, Kirkland, WA (US); and Afsoon Jamali, Issaquah, WA (US) | ||
| Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US) | ||
| Filed by Meta Platforms Technologies, LLC, Menlo Park, CA (US) | ||
| Filed on Apr. 15, 2022, as Appl. No. 17/722,138. | ||
| Claims priority of provisional application 63/248,932, filed on Sep. 27, 2021. | ||
| Claims priority of provisional application 63/233,136, filed on Aug. 13, 2021. | ||
| Claims priority of provisional application 63/225,327, filed on Jul. 23, 2021. | ||
| Prior Publication US 2023/0028165 A1, Jan. 26, 2023 | ||
| Int. Cl. G02B 27/01 (2006.01); G02B 26/04 (2006.01); G02F 1/00 (2006.01) | ||
| CPC G02B 27/0172 (2013.01) [G02B 26/04 (2013.01); G02B 27/0101 (2013.01); G02B 27/0179 (2013.01); G02F 1/0045 (2013.01); G02B 2027/0118 (2013.01); G02F 2201/086 (2013.01); G02F 2201/44 (2013.01)] | 14 Claims |
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1. A device, comprising:
an active liquid crystal layer configured to adjust a transparency level according to an electrical power provided between two electrodes, the active liquid crystal layer including a host polymer oriented in a first direction and a liquid crystal polymer oriented in a second direction that is transversal to the first direction, when no electrical power is provided; and a photoactive layer configured to adjust the transparency level upon absorption of an ultraviolet radiation for a selected period of time. |