公开(公告)号：US12287085B2

公开(公告)日：2025-04-29

申请号：US18663323

申请日：2024-05-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bharat R. Acharya ,  Fan Long ,  Edward S. Hagermoser ,  Jathan D. Edwards

IPC: F21V9/14 ,  A61L2/08 ,  A61L2/10 ,  F21Y113/00 ,  G02F1/1335 ,  G02F1/13357

Abstract: A display system includes visible light emitting first devices configured to emit a first light having at least a first visible wavelength; ultraviolet light emitting second devices configured to emit a second light having at least a second ultraviolet wavelength; a display panel disposed on the first and second devices; and a reflective polarizer disposed between the display panel and the first and second devices, such that the reflective polarizer has, for the visible wavelength, an average optical reflectance of greater than about 50% when an incident light is polarized along an in-plane first direction and an average optical transmittance of greater than about 50% when the incident light is polarized along an in-plane orthogonal second direction; and an optical transmission of greater than about 30% for the at least the second wavelength and for at least one of the first and second polarization states.

公开(公告)号：US20250035828A1

公开(公告)日：2025-01-30

申请号：US18916811

申请日：2024-10-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Fan Long ,  Bharat R. Acharya ,  Jaewon Kim ,  Jingfei Chen ,  Huijie Xie ,  Zhe Hu

IPC: G02B5/26 ,  G01S7/03 ,  G01S13/931 ,  G02B1/04 ,  G02B5/20 ,  G02B5/30 ,  H01Q1/42

Abstract: An optical stack includes a substrate, a radio-wave anti-reflection sheet configured to reduce reflection from the optical stack of radio waves at a predetermined operating frequency, and a visible light reflective, infrared light transmissive multilayer optical film disposed between the radio-wave anti-reflection sheet and the substrate. For radiation substantially normally incident on the radio-wave anti-reflection sheet and for a first frequency range at least 20 GHz wide, centered on the predetermined operating frequency, and disposed between about 1 GHz and about 120 GHz, a return loss of the optical stack is asymmetric about the predetermined operating frequency in the first frequency range. The optical stack has a largest return loss S11L in the first frequency range of less than −10 dB and a difference between the largest return loss S11L and a smallest return loss S11S in the first frequency range is less than about 2 dB.

公开(公告)号：US12013113B2

公开(公告)日：2024-06-18

申请号：US18102851

申请日：2023-01-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bharat R. Acharya ,  Fan Long ,  Edward S. Hagermoser ,  Jathan D. Edwards

IPC: A61L2/10 ,  A61L2/08 ,  F21V9/14 ,  G02F1/1335 ,  G02F1/13357 ,  F21Y113/10

CPC classification number: F21V9/14 ,  A61L2/085 ,  A61L2/10 ,  G02F1/133536 ,  G02F1/133603 ,  F21Y2113/10 ,  G02F2203/11

Abstract: A display system includes visible light emitting first devices configured to emit a first light having at least a first visible wavelength; ultraviolet light emitting second devices configured to emit a second light having at least a second ultraviolet wavelength; a display panel disposed on the first and second devices; and a reflective polarizer disposed between the display panel and the first and second devices, such that the reflective polarizer has, for the visible wavelength, an average optical reflectance of greater than about 50% when an incident light is polarized along an in-plane first direction and an average optical transmittance of greater than about 50% when the incident light is polarized along an in-plane orthogonal second direction; and an optical transmission of greater than about 30% for the at least the second wavelength and for at least one of the first and second polarization states.

公开(公告)号：US20220091316A1

公开(公告)日：2022-03-24

申请号：US17309999

申请日：2019-02-02

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Fan Long ,  Huijie Xie ,  Jingfei Chen ,  Zhe Hu ,  John A. Wheatley ,  Adam D. Haag

IPC: G02B5/20 ,  G02B5/02 ,  G02B27/28

Abstract: An optical stack (100) includes an optical diffuser (10) and a first reflective polarizer (40) disposed on the optical diffuser (10). For substantially normally incident light and for nonoverlapping first and second wavelength ranges, the optical diffuser (10) has a first scattering rate R1 for at least one wavelength in the first wavelength range, and a second scattering rate R2 for at least one wavelength in the second wavelength range, such that R1/R2 is greater than or equal to 2. The first reflective polarizer (40) may transmit at least 40% of light for a first polarization state for each wavelength in the first wavelength range, may reflect at least 70% of light for an orthogonal second polarization state for each wavelength in the first wavelength range, and transmit at least 40% of light for each of the first and second polarization states and for each wavelength in the second wavelength range.