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公开(公告)号：US20240230912A1
公开(公告)日：2024-07-11
申请号：US18558419
申请日：2022-05-05
发明人： John A. Wheatley , Raghunath Padiyath , Gilles J. Benoit , Michael D. Holden , Martin J. Sisolak , Travis L. Potts , Jincy Jose
IPC分类号： G01S17/931 , B60J1/20 , G01S7/481 , G02B1/04 , G02B5/20
CPC分类号： G01S17/931 , B60J1/20 , G01S7/4813 , G02B1/04 , G02B5/208
摘要： An optical sensing system includes an optical film and a transceiver configured to at least 5 one of emit and receive a first light toward an object through the optical film along a propagation direction making a first angle of greater than about 20 degrees in an air with a normal to the optical film. The first light has a first infrared wavelength in an infrared wavelength range extending from about 800 nm to about 2000 nm. For an incident light incident on the optical film in the air and having the first infrared wavelength and for at least one of mutually orthogonal first and second 10 polarization states, the optical film reflects at least 60% of the incident light at an incident angle of less than about 5 degrees, and transmits at least 40% of the incident light at an incident angle substantially equal to the first angle.
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公开(公告)号：US20230058161A1
公开(公告)日：2023-02-23
申请号：US17887611
申请日：2022-08-15
摘要： A reflective polarizer includes a plurality of first layers disposed on a plurality of polymeric second layers. Each of at least 30% of the first layers includes at least 30% by weight of an inorganic material. For an incident light incident in a plane and a first incident angle, the reflective polarizer and the first layers have respective average optical reflectances R3v and R1v in a visible wavelength range and respective average optical reflectances R3ir and R1ir in an infrared wavelength range, R1v 10%, when the incident light is polarized along a first direction; and for the visible wavelength range and for a second incident angle, the plurality of polymeric second layers has an average optical reflectance R2v(x) when the plane includes the first direction and an average optical reflectance R2v(y) when the plane includes a second direction, 5%
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