公开(公告)号：US20210302637A1

公开(公告)日：2021-09-30

申请号：US17260413

申请日：2019-07-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

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

IPC: G02B5/30 ,  G02B5/20

Abstract: Optical films are described. In particular, optical films including a reflective polarizer portion and an infrared portion, with no adhesive between these two portions, are described. These optical films may be particularly suitable for combiner applications, including automotive heads up display applications with demanding ambient environments.

公开(公告)号：US20210048571A1

公开(公告)日：2021-02-18

申请号：US17089417

申请日：2020-11-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

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

IPC: G02B5/30 ,  B29D11/00 ,  G02B27/28 ,  B32B17/06 ,  G02F1/1335

Abstract: Multilayer optical film reflective polarizers previously considered to have excessive off-axis color can provide adequate performance in an LC display without any high haze light diffusing layer or air gap between the reflective polarizer and the back absorbing polarizer of the display. The reflective polarizer has only one packet of microlayers, and is oriented using a standard tenter such that birefringent microlayers in the film are biaxially birefringent. The microlayers in the packet have a layer thickness profile suitably tailored to avoid excessive perceived color at normal and oblique angles. A laminate made by combining this type of reflective polarizer with an absorbing polarizer, without an air gap or any high haze light diffusing layer or structure between the polarizers, can be used and incorporated into a liquid crystal display or the like with adequate color performance both at normal incidence and oblique incidence up to a polar angle of 60 degrees.

公开(公告)号：US10859741B2

公开(公告)日：2020-12-08

申请号：US16745427

申请日：2020-01-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

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

IPC: G02B5/30 ,  B29D11/00 ,  G02B27/28 ,  B32B17/06 ,  G02F1/1335 ,  G02F1/13357 ,  B29L31/34

Abstract: Multilayer optical film reflective polarizers previously considered to have excessive off-axis color can provide adequate performance in an LC display without any high haze light diffusing layer or air gap between the reflective polarizer and the back absorbing polarizer of the display. The reflective polarizer has only one packet of microlayers, and is oriented using a standard tenter such that birefringent microlayers in the film are biaxially birefringent. The microlayers in the packet have a layer thickness profile suitably tailored to avoid excessive perceived color at normal and oblique angles. A laminate made by combining this type of reflective polarizer with an absorbing polarizer, without an air gap or any high haze light diffusing layer or structure between the polarizers, can be used and incorporated into a liquid crystal display or the like with adequate color performance both at normal incidence and oblique incidence up to a polar angle of 60 degrees.

公开(公告)号：US20180348418A1

公开(公告)日：2018-12-06

申请号：US15776699

申请日：2016-11-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

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

IPC: G02B5/30 ,  G02F1/1335 ,  B29D11/00 ,  B32B17/06

CPC classification number: G02B5/3041 ,  B29D11/00644 ,  B29D11/0073 ,  B29L2031/3475 ,  B32B17/064 ,  B32B2307/42 ,  B32B2457/202 ,  G02B5/3033 ,  G02B5/3083 ,  G02B27/28 ,  G02F1/133536 ,  G02F1/133606 ,  G02F1/13362

Abstract: Multilayer optical film reflective polarizers previously considered to have excessive off-axis color can provide adequate performance in an LC display without any high haze light diffusing layer or air gap between the reflective polarizer and the back absorbing polarizer of the display. The reflective polarizer has only one packet of microlayers, and is oriented using a standard tenter such that birefringent microlayers in the film are biaxially birefringent. The microlayers in the packet have a layer thickness profile suitably tailored to avoid excessive perceived color at normal and oblique angles. A laminate made by combining this type of reflective polarizer with an absorbing polarizer, without an air gap or any high haze light diffusing layer or structure between the polarizers, can be used and incorporated into a liquid crystal display or the like with adequate color performance both at normal incidence and oblique incidence up to a polar angle of 60 degrees.

公开(公告)号：US20150378077A1

公开(公告)日：2015-12-31

申请号：US14769302

申请日：2014-02-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

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

IPC: G02B5/30

CPC classification number: G02B5/3041 ,  G02B5/3083

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.

Abstract translation: 描述了偏振器堆叠。 更具体地，描述了包括吸收偏振器和包括至少一个准直反射偏振器的多个反射偏振器的偏振器堆叠。 这种偏振器堆叠能够发出准直和色彩中性的发光。 还描述了结合了这种偏振片的背光源。

公开(公告)号：US12078833B2

公开(公告)日：2024-09-03

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

CPC classification number: G02B5/3041 ,  G02B5/3083

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.

公开(公告)号：US20240256088A1

公开(公告)日：2024-08-01

申请号：US18604764

申请日：2024-03-14

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 ,  G02B5/02 ,  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：US20240111081A1

公开(公告)日：2024-04-04

申请号：US18256381

申请日：2021-11-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Carl A. Stover ,  Adam D. Haag ,  Timothy J. Nevitt

IPC: G02B5/30

CPC classification number: G02B5/305

Abstract: The present disclosure provides a reflective polarizer including a plurality of polymeric first layers and a plurality of polymeric second layers. A plot of an average layer thickness versus a layer number for the pluralities of polymeric first, but not second, layers includes a knee region separating a left region including at least 50 sequentially arranged polymeric first layers. The polymeric first layers have lower layer numbers, and the average layer thickness increases with increasing layer number from a right region including at least 5 sequentially arranged polymeric first layers. The polymeric first layers have higher layer numbers and the average thickness increases with increasing layer number, such that linear fits to the at least 50 sequentially arranged polymeric first layers and to the at least 5 sequentially arranged polymeric first layers have respective positive slopes S1 and S2, S2/S1≥5.

公开(公告)号：US11885999B2

公开(公告)日：2024-01-30

申请号：US17996676

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: F21V8/00 ,  G06V40/13

CPC classification number: G02B6/0056 ,  G02B6/0051 ,  G06V40/1318

Abstract: An optical construction includes a reflective polarizer and an optically diffusive film disposed on the reflective polarizer. The reflective polarizer includes an outer layer including a plurality of first particles partially protruding from a first major surface thereof to form a structured major surface. A first optically diffusive layer is conformably disposed on the structured major surface. The optically diffusive film includes a second optically diffusive layer including a plurality of nanoparticles dispersed therein, and a structured layer including a structured major surface. For a substantially normally incident light and a visible wavelength range from about 450 nm to about 650 nm and an infrared wavelength range from about 930 nm to about 970 nm, the second optically diffusive layer has an average specular transmittance Vs in the visible wavelength range and an average specular transmittance Is in the infrared wavelength range, where Is/Vs≥2.5.

公开(公告)号：US11829024B2

公开(公告)日：2023-11-28

申请号：US17435203

申请日：2020-02-18

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

CPC classification number: G02F1/133533 ,  G02F1/133605

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.