3m Innovative Properties Company

3m Innovation Properties

Solventum Intellectual Properties Company

Caleb T Nelson

Daniel J Schmidt

Kevin W Gotrik

Raymond J Kenney

Gary Timothy Boyd

Kenneth A Epstein

Tao Liu

Henrik B Van Lengerich

Nicholas A Johnson

Owen M Anderson

John Allen Wheatley

Moses Mekala David

James M Nelson

Tri Dinh Pham

Jeffrey L Solomon

Steven P Swanson

Corey D Balts

David J Tarnowski

Edwin L Kusilek

Martin B Wolk

Kurt J Halverson

Matthew S Stay

Paul B Armstrong

David J Rowe

Christopher Stewart Lyons

Encai Hao

Karl K Stensvad

Justin A Riddle

Nicholas C Erickson

James Zhu

Morgan A Priolo

Shu-Ching Fan

Matthew T Scholz

Naiyong Jing

William Blake Kolb

Timothy J Hebrink

Chetan P Jariwala

Raymond Patrick Johnston

Robert L Brott

Craig R Schardt

Robert A Yapel

Yu Yang

Lan Hong Liu

Vivian Wynne Jones

Bharat R Acharya

David M Mahli

Susannah C Clear

Elisa M Cross

Mitchell A F Johnson

James E Lockridge

Adam J Meuler

Milind Balwant Sabade

Kenneth A P Meyer

Kayla C Niccum

Tonya D Bonilla

Bradley L Givot

Petra L Kohler Riedi

David A Rosen

James P Burke

Joshua M Fishman

Assumpta A G Bennaars-Eiden

Lucas J Hunt

Frederick J Gustafson

Luke A Schroeder

Bryan A Baker

Chi-fan Chen

Laura R Nereng

Ashley R Sonnier

Samuel R Hei

Gary T Boyd

Nardine S Abadeer

Phillip D Hustad

Raymond P Johnston

An optical article includes a waveguide and a structured film. The structured film includes a polymeric substrate, an etch stop layer disposed on the polymeric substrate, a structured layer including a plurality of engineered structures disposed on a side of the etch stop layer opposite the polymeric substrate, a planarizing backfill layer disposed over the plurality of engineered structures to define a substantially planar major surface of the planarizing backfill layer having a surface roughness Ra, and an adhesive layer disposed on the substantially planar surface of the planarizing backfill layer and bonding the structured film to the waveguide. A difference in index of refraction of the planarizing backfill layer and the structured layer is at least 0.25 for at least a first wavelength Win a range of 400 nm to 2500 nm. The adhesive layer has an average thickness ta where Ra<ta<¼W

Structured film and optical article including structured film

A light control film comprises 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 the absorptive regions comprise a core having a first concentration, C, of a light absorbing material sandwiched between cladding layers having a second concentration, C, of the light absorbing material, wherein C<C, and wherein the cores have an aspect ratio of at least 20.

High transmission light control film

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.

Optical film and method of making

A light control film comprises a light input surface and a light output surface opposite the light input surface. Alternating transmissive regions and absorptive regions are disposed between the light input surface and the light output surface. The absorptive regions have an aspect ratio of at least 30 and the alternating transmissive region and absorptive regions have a relative transmission at a viewing angle of 0 degrees of at least 75%.

Nanostructured articles, materials for the nanostructured articles, and intermediate articles for use in making the nanostructured articles. The nanostructured articles can be formed on a flexible film and are useful for optical metasurface applications and possibly other applications. The articles can include nanoreplicated layers or pattern transfer layers of engineered nanostructures.

Nanostructured optical films and intermediates

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.

High transmission light control films with asymmetric light output

A light control film comprises a light input surface and a light output surface; alternating transmissive regions and absorptive regions disposed between the light input surface and the light output surface; and TIR cladding layers. The TIR cladding layer having a refractive index, n. The transmissive regions alternate between high refractive index transmissive regions having a refractive index, n, and low refractive index transmissive regions having a refractive index, n. The absorptive regions comprise a core having a refractive index, n, adjacent an AR cladding layer; wherein n<nand n<n. The TIR cladding layers are adjacent the high refractive index transmissive regions. The cores have an aspect ratio of at least 20. The high refractive index transmissive regions have a wall angle of 6 degrees or less.

High transmission light control film comprising alternating transmissive and absorptive regions

Methods of making metal patterns on flexible substrates are provided. A releasable solid layer is selectively formed on a patterned surface of the flexible substrate by applying a liquid solution thereon. The releasable solid layer is transferred from the patterned surface to a transfer layer where the metal patterns are formed.

Methods of making metal patterns on flexible substrate

An optical film has a major surface including a plurality of microstructures. Each microstructure includes an optical facet and a sidewall meeting the optical facet at a ridge of the microstructure. The optical facet and the sidewall define an oblique angle therebetween. For each microstructure in at least a majority of the microstructures, an optically absorptive layer is disposed on the sidewall. The optical film can include a polymeric layer having a microstructured surface at least partially coated with an inorganic optically transparent layer. The optically absorptive layer can an average thickness t where 100 nm<t<1 micrometer. A first layer can be disposed between the sidewall and the optically absorptive layer where the first layer has a lower extinction coefficient than the optically absorptive layer.

Optical film

A light control film is described comprising a light input surface and alight 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 the absorptive regions comprise light-absorbing or light-reflecting particles and a dried aqueous dispersion of an organic polymer. The light control film can have improved on-axis transmission in combination with sufficiently high sheet resistance such that the film does not detract from the responsiveness of a touch screen of an electronic device. Also described is a coated article and method of making.

Coated substrate comprising electrically conductive particles and dried aqueous dispersion of organic polymer

Materials and methods useful in forming nano-scale features on substrates, and articles such as optical films incorporating such nano-scale patterned substrates.

Materials and methods for forming nano-structures on substrates

Methods of forming an array of patterns on a substrate are provided. An array of protective tiles formed from a protectant resin is provided to cover an array of sub-regions on the substrate. An array of patterns is formed on the substrate by sequentially repeating steps (i) and (ii) for each sub-region: (i) removing the protective tile from one of the sub-regions to expose the first major surface underneath; and (ii) forming a pattern on the exposed first major surface within the one of the sub-regions.

Arrayed structured replication articles and methods

An optical system includes an optical film curved about a first axis and a light control film curved about the first axis. The light control film can be disposed between a 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 the light control film. The light control film can include a plurality of alternating optically transmissive and optically absorptive regions extending longitudinally along the first axis such that in a cross-section orthogonal to the first axis, for at least a majority of the optically transmissive regions, a centerline between adjacent optically absorptive regions is substantially normal to a major surface of the light control film.

Optical system including light control film and Fresnel lens

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.

Light control film

An article includes a flexible structured film with a first major surface and a second major surface, wherein a first major surface of the flexible structured film has a plurality of posts separated by land areas, and the posts have an exposed surface. An anti-biofouling layer resides in the land areas, and the anti-biofouling layer has a methylated surface. An inorganic layer is on the exposed surfaces of the posts, wherein the inorganic layer includes a metal or a metal oxide. An analyte binding layer is on the inorganic layer, wherein the analyte binding layer is chosen from a reactive silane, a functionalizable hydrogel, a functionalizable polymer, and mixtures and combinations thereof. An exposed surface of the analyte binding layer includes at least one functional group selected to bind with a biochemical analyte.

Nanopatterned films with patterned surface chemistry

Growing community of inventors

Woodbury, MN, United States of America

Caleb T Nelson