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：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：US20240045115A1

公开(公告)日：2024-02-08

申请号：US18265742

申请日：2021-12-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Neeraj Sharma ,  Przemyslaw P. Markowicz ,  Daniel J. Schmidt ,  Timothy J. Reddy ,  Mark A. Roehrig

IPC: G02B3/00 ,  G02B27/09

CPC classification number: G02B3/0056 ,  G02B27/0988 ,  G02B3/0012

Abstract: An optical construction includes a lens film having outermost first and second major surfaces. The first major surface includes a plurality of microlenses. A multilayer mask having an average thickness of less than about 0.5 times an average focal length of the microlenses and an optical density of greater than about 2 is disposed on the second major surface. The multilayer mask includes polymeric first and second mask layers where each of the first and second mask layers has an optical density of greater than about 0.3. The multilayer mask defines a plurality of laser-ablated through openings therein that are aligned to the microlenses in a one-to-one correspondence. An optical transmittance of the optical construction as a function of the incident angle has a transmitted peak having a peak transmittance T1 and a corresponding full width at 20 percent of maximum W1, where T1/W1≥2.4%/degree.

公开(公告)号：US20230393312A1

公开(公告)日：2023-12-07

申请号：US18246419

申请日：2021-10-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Raymond J. Kenney ,  Tao Liu ,  Kevin W. Gotrik ,  Caleb T. Nelson ,  Nicholas A. Johnson ,  Daniel J. Schmidt

IPC: G02B5/00 ,  G02F1/1335

CPC classification number: G02B5/003 ,  G02F1/133524 ,  G02B2207/123

Abstract: A light control film comprising a light input surface and a light output surface opposite the light input surface; alternating transmissive regions and absorptive regions disposed between the light input surface and the light output surface, wherein each absorptive region has an aspect ratio of at least 30, and wherein each transmissive region has a first refractive index; and a plurality of low index layers, wherein each low index layer is disposed between each transmissive region and an adjacent absorptive region, and wherein each low index layer has a second refractive index less than the first refractive index of each transmissive region.

公开(公告)号：US20230024412A1

公开(公告)日：2023-01-26

申请号：US17757329

申请日：2020-12-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： James E. Lockridge ,  Kevin W. Gotrik ,  Raymond J. Kenney ,  Caleb T. Nelson ,  Daniel J. Schmidt ,  Riley J. Hillstrom

IPC: G02B5/02 ,  G02B5/00 ,  B05D5/06 ,  B05D3/04 ,  B05D3/02

Abstract: The present disclosure provides a light control film and a method of manufacturing the same. The method includes providing a microstructured film. The microstructured film includes a plurality of light transmissive regions alternated with channels. The microstructure film is defined by a top surface and a pair of side surfaces of each light transmissive region and a bottom surface of each channel. The method further includes coating the pair of side surfaces of each light transmissive region and the bottom surface of each channel with a coating. The coating includes light absorbing particles that are dispersed in a liquid. The method further includes drying the coating such that the light absorbing particles are selectively deposited on the pair of sides surfaces of each light transmissive region.

公开(公告)号：US20220342126A1

公开(公告)日：2022-10-27

申请号：US17753281

申请日：2020-08-28

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Daniel M. Lentz ,  Kevin W. Gotrik ,  Jeremy K. Larsen ,  Caleb T. Nelson ,  Daniel J. Schmidt ,  Fei Peng

IPC: G02B5/00 ,  B29D11/00 ,  C23C18/31 ,  C23C18/20 ,  C23C18/16

Abstract: A method of manufacturing an optical film includes providing a base film. The base film includes a substrate defining a first surface and a second surface. The base film also includes a plurality of structures defining an upper surface and at least one side surface extending from the corresponding upper surface to a base portion. The method also includes depositing a catalyst material on each of the plurality of structures and the base portion to form a catalyst layer thereon. The method further includes selectively removing the catalyst layer from the upper surface of each of the plurality of structures and the base portion while retaining an activity of the catalyst layer on the at least one side surface of each of the plurality of structures. The method includes forming a metallic layer on the at least one side surface of each of the plurality of structures.

公开(公告)号：US20220221624A1

公开(公告)日：2022-07-14

申请号：US17596301

申请日：2020-06-11

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Raymond J. Kenney ,  Owen M. Anderson ,  Kevin W. Gotrik ,  Nicholas A. Johnson ,  Kenneth A. P. Meyer ,  Caleb T. Nelson ,  Daniel J. Schmidt

IPC: G02B5/00 ,  G02B5/30

Abstract: Light control films comprise a light input surface and alight output surface opposite the light input surface and 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 and are canted in the same direction. The alternating transmissive regions and absorbing regions have a maximum relative transmission at a viewing angle other than 0 degrees.

公开(公告)号：US20220178749A1

公开(公告)日：2022-06-09

申请号：US17440004

申请日：2020-03-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： John A. Wheatley ,  Mark A. Roehrig ,  Audrey A. Sherman ,  Del R. Lawson ,  Gilles J. Benoit ,  Daniel J. Schmidt ,  Jonah Shaver ,  Raymond J. Kenney ,  Zhaohui Yang

IPC: G01J3/28 ,  G02B5/22

Abstract: An optical device is disclosed and includes an optical sensor, a plurality of photosensitive pixels disposed on the optical sensor, a wavelength-selective optical filter in optical communication with the photosensitive pixels, and a plurality of spatially-variant written regions disposed in the optical filter, the written regions having a transmission spectrum and each of the written regions being larger than each of the pixels.