公开(公告)号：US12210241B2

公开(公告)日：2025-01-28

申请号：US18381412

申请日：2023-10-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Gilles J. Benoit ,  Carl A. Stover ,  Matthew B. Johnson ,  Ryan T. Fabick ,  Quinn D. Sanford

IPC: G02F1/1335 ,  G02F1/13357

Abstract: An optical stack for reflecting and transmitting light in a predetermined wavelength range includes stacked first and second optical films, the predetermined wavelength range defining a first wavelength range and a remaining wavelength range. For normally incident light and for each wavelength in a first wavelength range, the first optical film substantially reflects light having a first polarization state, and substantially transmits light having a second polarization state. For each of the first and second polarization states, for wavelengths in the first wavelength range, the second optical film has a maximum optical transmittance Tmax for light incident at a first incident angle, and an optical transmittance Tmax/2 for light incident at a second incident angle, where the second incident angle is greater than the first incident angle by less than about 50 degrees. For wavelengths in the remaining wavelength range, the second optical film reflects at least 80% of light.

公开(公告)号：US20240302583A1

公开(公告)日：2024-09-12

申请号：US18666258

申请日：2024-05-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Matthew B. Johnson ,  Adam D. Haag ,  Carl A. Stover ,  Timothy J. Nevitt ,  William F. Edmonds ,  Stephen A. Johnson

IPC: G02B5/30 ,  B32B7/023

CPC classification number: G02B5/305 ,  B32B7/023 ,  G02B5/3016 ,  G02B5/3083 ,  C09K2323/03 ,  C09K2323/031

Abstract: Multilayer optical films are described. In particular, multilayer optical films that include both birefringent high index layers and low index layers are disclosed. The low index layers can be a glycol-modified polyethylene terephthalate. These optical films can be reflective polarizers and may be particularly suitable for automotive, architectural, and industrial applications.

公开(公告)号：US20240280740A1

公开(公告)日：2024-08-22

申请号：US18570774

申请日：2022-06-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Heykyoung Han ,  Jihoon Yu ,  John F. VanDerlofske, III ,  Raghunath Padiyath ,  John F. Reed ,  Carl A. Stover

IPC: G02B5/30 ,  G02C7/12

CPC classification number: G02B5/305 ,  G02B5/3083 ,  G02C7/12

Abstract: An optical construction includes an optical film including a plurality of polymeric layers and an optical retarder disposed on the optical film. For a substantially normally incident light and for a visible wavelength range of about 420 nm to about 680 nm and an infrared wavelength range of about 900 nm to about 1100 nm: for the incident light polarized along each of mutually orthogonal in-plane first and second directions. the plurality of polymeric layers has an optical transmittance of greater than about 60% for at least one visible wavelength in the visible wavelength range and an optical reflectance of greater than about 60% for at least one infrared wavelength in the infrared wavelength range. For the incident light polarized along at least one of the first and second directions, the optical retarder has an optical retardance of greater than about 1000 nm at the at least one visible wavelength.

公开(公告)号：US11960683B2

公开(公告)日：2024-04-16

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 ,  F21V8/00 ,  G02B5/02 ,  G02B5/30

CPC classification number: G06F3/0421 ,  G02B5/0226 ,  G02B5/305 ,  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 nm≤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%.

公开(公告)号：US20230350244A1

公开(公告)日：2023-11-02

申请号：US18247209

申请日：2021-09-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Carl A. Stover ,  Robert D. Taylor ,  Bharat R. Acharya

IPC: G02F1/1335 ,  G02F1/1333 ,  G06V10/143

CPC classification number: G02F1/133536 ,  G02F1/13338 ,  G06V10/143

Abstract: A reflective polarizer has a transmittance for a first polarization state having a band edge separating a first wavelength range extending at least from about 450 nm to about 900 nm and a second wavelength range extending at least from about 1100 nm to about 1300 nm. For the first polarization state, the reflective polarizer has an average transmittance in the first wavelength range less than about 10% and an average transmittance in the second wavelength range greater than about 80%; and for a second polarization state, the reflective polarizer has an average transmittance in the first wavelength range greater than about 40% and an average transmittance in the second wavelength range greater than about 80%. A display system includes the reflective polarizer and an infrared light source configured to emit an infrared light having a wavelength W1. The band edge has a band edge wavelength W2>W1.

公开(公告)号：US11550089B2

公开(公告)日：2023-01-10

申请号：US17305867

申请日：2021-07-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Timothy J. Nevitt ,  Carl A. Stover ,  Gilles J. Benoit ,  Kristopher J. Derks ,  Zhaohui Yang

IPC: G02B5/30 ,  B32B7/023 ,  B29D11/00 ,  B32B27/08 ,  B32B27/36 ,  B29K67/00 ,  B29L31/34

Abstract: Multilayer optical film reflective polarizers previously considered to have excessive off-axis color can provide adequate performance in an LC display in an “on-glass” configuration, laminated to a back absorbing polarizer of the display, without any light diffusing layer or air gap in such laminate. The reflective polarizer is a tentered-one-packet (TOP) multilayer film, having only one packet of microlayers, and oriented using a standard tenter such that birefringent microlayers in the film are biaxially birefringent. The thickness profile of optical repeat units (ORUs) in the microlayer packet is tailored to avoid excessive perceived color at normal and oblique angles. Color at high oblique angles in the white state of the display is reduced by positioning thicker ORUs closer to the absorbing polarizer, and by ensuring that, with regard to a boxcar average of the ORU thickness profile, the average slope from an ORU(600) to an ORU(645) does not exceed 1.8 times the average slope from an ORU(450) to the ORU(600).

公开(公告)号：US20220381964A1

公开(公告)日：2022-12-01

申请号：US17772546

申请日：2020-11-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Stephen A. Johnson ,  Carl A. Stover ,  Kristopher J. Derks ,  Richard Yufeng Liu

IPC: G02B5/30 ,  C08J5/18

Abstract: Polyester copolymeric materials include 40 to 51 mol % substituted naphthalate units, such as dimethyl-2,6-naphthalene dicarboxylate units, 10 to 40 mol % ethylene units, and 10 to 40 mol % hexane units. The polyester copolymers can be used to prepare multi-layer optical films by coextrusion and/or co-stretching. The copolyester polymeric materials have desirable optical properties and permit thermal processing at lower temperatures.

公开(公告)号：US11022734B2

公开(公告)日：2021-06-01

申请号：US16301106

申请日：2017-05-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Carl A. Stover ,  Kristopher J. Derks

IPC: G02B5/30 ,  G02B27/28 ,  G02F1/1335

Abstract: A polarizer stack including an absorbing polarizer and a multilayer polymeric reflective polarizer bonded together is described. The absorbing polarizer has a first block axis and the reflective polarizer has a second block axis substantially parallel to the first block axis. The reflective polarizer has a shrinkage in a range of 0.4 percent to 3 percent along the second block axis when the reflective polarizer is heated at 95° C. for 40 minutes.

公开(公告)号：US10928571B2

公开(公告)日：2021-02-23

申请号：US15102117

申请日：2014-12-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Adam D. Haag ,  Timothy J. Nevitt ,  Quinn D. Sanford ,  Robert D. Taylor ,  Carl A. Stover

IPC: G02B5/30 ,  F21V9/14

Abstract: Hybrid polarizers are described. More particularly, hybrid polarizers including reflective polarizer portions and hybrid polarizing portions, including embedded absorbing polarizing elements are described. The hybrid polarizers may be used in backlights or display devices.

公开(公告)号：US20210033766A1

公开(公告)日：2021-02-04

申请号：US16948968

申请日：2020-10-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Adam D. Haag ,  Timothy J. Nevitt ,  Michael F. Weber ,  Robert D. Taylor ,  Carl A. Stover

IPC: G02B5/30

Abstract: Polarizer stacks are described. More particularly, polarizer stacks that include an absorbing polarizer and multiple reflective polarizers, including at least one collimating reflective polarizer are described. Such polarizer stacks are capable of emitted light that is both collimated and color neutral. Backlights incorporating such polarizer stacks are also described.