公开(公告)号：US20230266515A1

公开(公告)日：2023-08-24

申请号：US18006459

申请日：2020-08-07

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Fan Long ,  Bharat R. Acharya ,  Jing Fei Chen ,  Huijie Xie ,  Zhe Hu ,  Bradley L. Givot ,  Carl A. Stover ,  Lin Zhao ,  Gilles J. Benoit ,  Robert D. Taylor

IPC: G02B5/28 ,  B32B27/30

CPC classification number: G02B5/285 ,  B32B27/30 ,  B32B2307/412 ,  B32B2307/42 ,  B32B2457/00

Abstract: A housing (185) for an electronic device (170) includes an optical film (100) having an optical transmittance for substantially normally incident light having a band edge separating first and second wavelength ranges, where the first wavelength range extends from about 400 nm to about 700 nm and the second wavelength range is at least about 100 nm wide and disposed between about 800 nm and about 1100 nm. For substantially normally incident light, an average optical reflectance of the optical film is greater than about 90% in the first wavelength range, and an average optical transmittance of the optical film is greater than about 80% in the second wavelength range. For at least one frequency in a range of about 0.1 GHz to about 90 GHz and for substantially normally incident radiation, the optical film transmits at least about 95% of the incident radiation.

公开(公告)号：US20230214062A1

公开(公告)日：2023-07-06

申请号：US17996583

申请日：2021-05-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bharat R. Acharya ,  Robert D. Taylor ,  Joseph P. Attard ,  Benjamin J. Forsythe ,  David T. Yust ,  Matthew E. Sousa ,  Jason S. Petaja ,  Anthony M. Renstrom ,  William Blake Kolb ,  Matthew S. Cole ,  Matthew S. Stay ,  Matthew R.D. Smith ,  Jeremy O. Swanson ,  Tri D. Pham ,  David A. Rosen ,  Qunyi Chen ,  Lisa A. DeNicola ,  Quinn D. Sanford ,  Carl A. Stover ,  Lin Zhao ,  Gilles J. Benoit

IPC: G06F3/042 ,  G02B5/30 ,  G02B5/02 ,  F21V8/00

CPC classification number: G06F3/0421 ,  G02B5/305 ,  G02B5/0226 ,  G02B6/0051

Abstract: A display system for sensing a finger of a user applied to the display system includes a display panel; a sensor for sensing the finger; a sensing light source configured to emit a first light having a first wavelength W1; and a reflective polarizer disposed between the display panel and the sensor. For a substantially normally incident light, an optical transmittance of the reflective polarizer versus wavelength for a first polarization state has a band edge such that for a first wavelength range extending from a smaller wavelength L1 to a greater wavelength L2 and including W1, where 30 mn≤L2−L1≤50 nm and L1 is greater than and within about 20 nm of a wavelength L3 corresponding to an optical transmittance of about 50% along the band edge, the optical transmittance has an average of greater than about 75%.