- 专利标题: LENS ASSEMBLY HAVING CIRCULAR REFLECTIVE POLARIZER
-
申请号: PCT/US2020/062528申请日: 2020-11-29
-
公开(公告)号: WO2021113156A1公开(公告)日: 2021-06-10
- 发明人: SILVERSTEIN, Barry David , PENG, Fenglin , WANG, Junren , HUANG, Yuge , LU, Lu , SULAI, Yusufu Njoni Bamaxam , GENG, Ying , GOLLIER, Jacques
- 申请人: FACEBOOK TECHNOLOGIES, LLC
- 申请人地址: 1601 Willow Road
- 专利权人: FACEBOOK TECHNOLOGIES, LLC
- 当前专利权人: FACEBOOK TECHNOLOGIES, LLC
- 当前专利权人地址: 1601 Willow Road
- 代理机构: COLBY, Steven et al.
- 优先权: US17/093,609 2020-11-09
- 主分类号: G02B5/30
- IPC分类号: G02B5/30 ; G02B27/01
摘要:
A device includes a light source configured to generate an image light. The device also includes a lens assembly coupled with the light source. The lens assembly includes a mirror configured to transmit a first portion of the image light and reflect a second portion of the image light. The lens assembly also includes a reflective polarizer including a birefringent medium with a chirality and configured to substantially reflect the first portion of the image light output from the mirror as a polarized light having a predetermined handedness toward the mirror. The lens assembly further includes a lens disposed between the mirror and the reflective polarizer and configured to provide an optical power to the image light.