公开(公告)号：US20240230912A1

公开(公告)日：2024-07-11

申请号：US18558419

申请日：2022-05-05

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Raghunath Padiyath ,  Gilles J. Benoit ,  Michael D. Holden ,  Martin J. Sisolak ,  Travis L. Potts ,  Jincy Jose

IPC: G01S17/931 ,  B60J1/20 ,  G01S7/481 ,  G02B1/04 ,  G02B5/20

CPC classification number: G01S17/931 ,  B60J1/20 ,  G01S7/4813 ,  G02B1/04 ,  G02B5/208

Abstract: 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.

公开(公告)号：US20240219719A1

公开(公告)日：2024-07-04

申请号：US18558421

申请日：2022-05-05

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Daniel S. Bates ,  Craig R. Schardt ,  Jincy Jose ,  David A. Rosen ,  David G. Freier ,  Stephan J. Pankralz

IPC: G02B27/01

CPC classification number: G02B27/0101 ,  G02B2027/0118

Abstract: An optical system includes a display, a reflective polarizer, and a glare trap. The glare trap includes a plurality of slats having a length L and a width W, L/W≥10. The slats form a plurality of elongated slots therebetween substantially filled with air. The reflective polarizer has an average optical reflectance of at least 40% for a first polarization state and an average optical transmittance of at least 40% for an orthogonal second polarization state. For each of the first and second polarization states, the glare trap has an average specular optical transmittance of between about 20% to about 80% and an average total optical reflectance of less than about 20%. For at least one wavelength in the visible wavelength range, an optical transmittance of the glare trap includes a first transmittance peak at a first peak angle with a corresponding FWHIM of less than about 30 degrees.

公开(公告)号：US20250164675A1

公开(公告)日：2025-05-22

申请号：US18839542

申请日：2023-02-27

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Susannah C. Clear ,  Travis L. Potts ,  Jincy Jose ,  Kenneth L. Smith ,  John M. DeSutter

IPC: G02B5/136 ,  E01F9/524 ,  G02B1/04

Abstract: The present disclosure is directed to reflective microstructures where at least part of the reflective surface of the microstructure is radially symmetric around a given axis. The disclosure is also directed to articles comprising the reflective microstructures.

公开(公告)号：US20240385441A1

公开(公告)日：2024-11-21

申请号：US18287553

申请日：2022-04-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jincy Jose ,  Byoung Kyu Kim ,  Craig R. Schardt ,  Stephan J. Pankratz

IPC: G02B27/01 ,  G02B27/28

Abstract: A heads-up display system includes a polarizing beam splitter, a fold mirror, a heads-up display mirror, and a picture generating unit configured to emit a picture light. The polarizing beam splitter, the fold mirror, and the heads-up display mirror define a cavity, and the picture generating unit is disposed outside the cavity. The picture light emitted from the picture-generating unit enters the cavity after being transmitted by the polarizing beam splitter a first time, and the picture light exits the cavity after being transmitted by the polarizing beam splitter a second time.