公开(公告)号：US12174407B2

公开(公告)日：2024-12-24

申请号：US17309603

申请日：2019-12-02

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Daniel J. Schmidt ,  Caleb T. Nelson ,  Kevin W. Gotrik ,  Raymond J. Kenney ,  Kenneth A. Epstein ,  Gary T. Boyd ,  Corey D. Balts ,  Morgan A. Priolo ,  John A. Wheatley ,  Elisa M. Cross

IPC: G02B5/22

Abstract: A light control film is described comprising alternating transmissive regions and absorptive regions disposed between the light input surface and the light output surface. The absorptive regions have an aspect ratio of at least 30. In some embodiments, an absorptive layer or reflective layer is disposed between the alternating transmissive regions and absorptive regions and the light input surface and/or light output surface. In another embodiment, the alternating transmissive regions comprise an absorptive material. The light control film can exhibit low transmission of visible light and high transmission of near infrared light. Also described is a light detection system comprising such light control films and a microstructured film.

公开(公告)号：US12099223B2

公开(公告)日：2024-09-24

申请号：US16419339

申请日：2019-05-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Matthew H. Frey ,  Craig R. Schardt ,  Gary T. Boyd ,  Eric J. Borchers ,  Nicole D. Petkovich

IPC: G02B5/30 ,  B82Y15/00 ,  C01B32/158 ,  F21V8/00 ,  G02B5/02 ,  G02F1/1335 ,  G02F1/13357 ,  G02B5/124

CPC classification number: G02B5/30 ,  B82Y15/00 ,  C01B32/158 ,  G02B5/02 ,  G02B6/0056 ,  G02F1/133536 ,  G02F1/13362 ,  G02B5/124 ,  G02B2207/101 ,  G02B2207/107 ,  G02F1/133606 ,  G02F2203/02

Abstract: An optical construction includes a reflective polarizer layer having a first pass axis and an absorptive polarizer layer having a second pass axis that is substantially aligned with the first pass axis. At least one electrically conductive light scattering layer is arranged between the reflective polarizer layer and the absorptive polarizer layer.

公开(公告)号：US20240151880A1

公开(公告)日：2024-05-09

申请号：US17768399

申请日：2020-11-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tao Liu ,  Tri D. Pham ,  Gary T. Boyd ,  Daniel J. Schmidt ,  Caleb T. Nelson ,  Owen M. Anderson

IPC: G02B1/118 ,  G02B1/111 ,  G02B5/00

CPC classification number: G02B1/118 ,  G02B1/111 ,  G02B5/003

Abstract: An optical film includes a structured film and a light control film formed on the structured film. The structured film includes a substrate and a plurality of polymeric microstructures formed on a major surface of the substrate. Each microstructure includes an optical facet and a sidewall meeting the optical facet at a ridge of the microstructure. The light control film includes an optically transparent material disposed on and covering the plurality of polymeric microstructures, and a plurality of optically absorptive louvers formed in the optically transparent material opposite the structured film. The louvers extend along a longitudinal direction and are spaced apart along an orthogonal transverse direction. The louvers have an average depth D into the optically transparent material and have an average width W in the transverse direction. D/W can be greater than 2. The optical film is integrally formed.

公开(公告)号：US20240122043A1

公开(公告)日：2024-04-11

申请号：US17768421

申请日：2020-10-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tao Liu ,  Gary T. Boyd ,  Daniel J. Schmidt ,  Caleb T. Nelson ,  Owen M. Anderson ,  Tri D. Pham ,  Encai Hao ,  Shu-Ching Fan

IPC: H10K59/80 ,  G02B3/08

CPC classification number: H10K59/879 ,  G02B3/08

Abstract: An optical system includes a light source, an optical film curved about a first axis, and a light control film curved about the first axis and disposed between the light source and the optical film. The optical film includes a microstructured first major surface and an opposing second major surface. The microstructured first major surface defines a linear Fresnel lens including a plurality of Fresnel elements extending longitudinally along the first axis. The first major surface of the optical film faces of the optically transmissive regions, a centerline between adjacent optically absorptive regions is substantially normal to a major surface of the light control film.

公开(公告)号：US11947135B2

公开(公告)日：2024-04-02

申请号：US16768910

申请日：2018-12-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Daniel J. Schmidt ,  Caleb T. Nelson ,  Kevin W. Gotrik ,  Raymond J. Kenney ,  John A. Wheatley ,  Kenneth A. Epstein ,  Gary T. Boyd ,  Corey D. Balts

IPC: G02B5/00 ,  G02B5/122 ,  G02B5/128

CPC classification number: G02B5/003 ,  G02B5/122 ,  G02B5/128

Abstract: A light control film is described comprising alternating transmissive regions and absorptive regions disposed between a light input surface and a light output surface. The absorptive regions have an aspect ratio of at least 30. In some embodiments, the alternating transmissive regions and absorptive regions have a transmission as measured with a spectrophotometer at a viewing angle of 0 degrees of at least 35, 40, 45, or 50% for a wavelength of the range 320-400 nm (UV) and/or at least 65, 70, 75, or 80% for a wavelength of the range 700-1400 nm (NIR). In another embodiment, the absorptive regions block light at the light input surface and light output surface and the maximum surface area that is blocked is less than 20% of the total alternating transmissive regions and absorptive regions. Also described are various optical communication systems comprising the light control films described herein and methods.

公开(公告)号：US20210278586A1

公开(公告)日：2021-09-09

申请号：US16619300

申请日：2018-06-05

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Quinn D. Sanford ,  Kenneth A. Epstein ,  Matthew B. Johnson ,  Gary T. Boyd

IPC: F21V8/00 ,  G02B5/30

Abstract: Backlights are described. In particular, backlights including wide-web turning films and reflective polarizers having quarter-wave retarders are disclosed. Such configurations can provide turning film systems with improved luminance uniformity for large format displays.

公开(公告)号：US20210165138A1

公开(公告)日：2021-06-03

申请号：US17174548

申请日：2021-02-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kenneth A. Epstein ,  Nicholas A. Johnson ,  Michael E. Lauters ,  Shannon L. Siefken ,  Gary T. Boyd

IPC: G02B5/04 ,  F21V5/08 ,  G02F1/13 ,  G02F1/13357

Abstract: The disclosure describes asymmetric turning films (ATFs) that may be used in conjunction with multiple light sources in a liquid crystal display assembly to provide multiple different characteristic output distributions of light. In some examples, the ATFs include a structured surface defining a plurality of microstructures having two or more faces with each face configured to reflect light in different directions. The microstructure may define a microstructure axis and an angle gradient characterizing the rotation of the microstructure axis across the structured surface of the ATF.

公开(公告)号：US20200341173A1

公开(公告)日：2020-10-29

申请号：US16768910

申请日：2018-12-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Daniel J. Schmidt ,  Caleb T. Nelson ,  Kevin W. Gotrik ,  Raymond J. Kenney ,  John A. Wheatley ,  Kenneth A. Epstein ,  Gary T. Boyd ,  Corey D. Balts

IPC: G02B5/00 ,  G02B5/128 ,  G02B5/122

Abstract: A light control film is described comprising alternating transmissive regions and absorptive regions disposed between a light input surface and a light output surface. The absorptive regions have an aspect ratio of at least 30. In some embodiments, the alternating transmissive regions and absorptive regions have a transmission as measured with a spectrophotometer at a viewing angle of 0 degrees of at least 35, 40, 45, or 50% for a wavelength of the range 320-400 nm (UV) and/or at least 65, 70, 75, or 80% for a wavelength of the range 700-1400 nm (NIR). In another embodiment, the absorptive regions block light at the light input surface and light output surface and the maximum surface area that is blocked is less than 20% of the total alternating transmissive regions and absorptive regions. Also described are various optical communication systems comprising the light control films described herein and methods.

公开(公告)号：US20180217300A1

公开(公告)日：2018-08-02

申请号：US15568832

申请日：2016-04-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Gary T. Boyd ,  Tri D. Pham ,  Nicholas A. Johnson ,  Oanh V. Pham ,  Sara S. Merritt ,  Stephen J. Etzkorn ,  Haiyan Zhang ,  Corey D. Balts ,  Joseph T. Aronson

IPC: G02B5/02 ,  F21V8/00 ,  G02F1/1335 ,  C25D3/04 ,  C25D3/38 ,  C25D5/12

Abstract: A diffuser including opposing structured first and second major surfaces is described. The first major surface includes a first plurality of surface structures providing a uniform first haze. The second major surface includes a first portion adjacent an edge and a second portion adjacent the first portion. The first portion includes a first region and a second region between the first region and the second portion. The second major surface includes a second plurality of surface structures providing a uniform second haze over the second portion and providing a third haze in the first portion. The third haze in the first region is higher than the second haze, and the third haze in the second region is monotonically decreasing. The second portion has a surface area of at least 90 percent of a surface area of the second major surface.

公开(公告)号：US20180120581A1

公开(公告)日：2018-05-03

申请号：US15341171

申请日：2016-11-02

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Andrew J. Ouderkirk ,  Michael J. Sykora ,  Robert R. Kieschke ,  Kenneth L. Smith ,  Olester Benson, JR. ,  Gary E. Gaides ,  Tao Liu ,  Thomas J. Blong ,  Gary T. Boyd

IPC: G02B27/30 ,  G02B5/00 ,  G02B27/02 ,  G02B3/00 ,  G02B19/00 ,  H01L31/0232 ,  H01L31/0224

Abstract: A light control film includes a plurality of spaced apart substantially parallel first light absorbing regions arranged along a first direction, each first light absorbing region having a width and a height, the plurality of first light absorbing regions including nonoverlapping first and second sub-pluralities of the plurality of first light absorbing regions, the first sub-plurality of the plurality of first light absorbing regions having a first viewing angle, the second sub-plurality of the plurality of first light absorbing regions having a different second viewing angle.