3m Innovative Properties Company

Iowa State University Research Foundation, Inc.

Vivian Wynne Jones

Sergey Lamansky

Timothy J Hebrink

David Scott Thompson

Zhaohui Yang

James P Burke

Evan L Schwartz

Moses Mekala David

James M Nelson

Matthew S Stay

John P Baetzold

Haiyan Zhang

Michael E Lauters

Ha T Le

Todd G Pett

Naiyong Jing

Martin B Wolk

Brant Ulrick Kolb

Olester Benson, Jr

Mark J Pellerite

Mieczyslaw H Mazurek

Gary Timothy Boyd

Michael Benton Free

Michael L Steiner

Marc Dudley Radcliffe

Tri Dinh Pham

Keith Michael Kotchick

John James Stradinger

Derek J Dehn

Graham M Clarke

Marie A Boulos

Daniel W Hennen

Marc D Porter

William F Edmonds

Gary E Gaides

Margaret M Vogel-Martin

Chuntao Cao

Eric R Henderson

Randy S Bay

Curtis L Mosher

Milind Balwant Sabade

Michelle M Mok

John F Van Derlofske, Iii

Ghidewon Arefe

Mary E Johansen

Audrey A Sherman

Thomas P Klun

Terry Lee Smith

Michael Alan Meis

Rudolf J Dams

William Blake Kolb

Stephen A Johnson

Mikhail L Pekurovsky

Kurt J Halverson

Raymond Patrick Johnston

Tatsuo Fukushi

Erin A McDowell

Encai Hao

William D Coggio

Kevin R Schaffer

Christopher Bland Walker, Jr

Mark E Gardiner

Jun-Ying Zhang

Steven D Solomonson

Lan Hong Liu

Jiaying Ma

Emily S Goenner

John S Staral

Joan M Noyola

Caleb T Nelson

Fuming B Li

Karl J L Geisler

Bradley W Eaton

Brett J Sitter

George Van Dyke Tiers

Kathryn M Spurgeon

Silva K Theiss

Owen M Anderson

Dawn V Muyres

Brian W Lueck

Sharon Wang

Katherine A Brown

Qingbing Wang

David B Stegall

Tianyu Wu

Hyacinth L Lechuga

Khanh T Huynh

John J Sullivan

Jodi L Connell

Leslie A Kreilich

James M Battiato

Patrick G Zimmerman

Karan Jindal

Nathaniel I Lehn

Joseph W Woody, V

Jonathan T Kahl

Steven John Pachuta

James A Phipps

Gordon A Kuhnley

Alexander C Eldredge

A composite cooling film comprises an ultraviolet-reflective multilayer optical film and a reflective microporous layer secured thereto. The ultraviolet-reflective multilayer optical film is at least 50 percent reflective of ultraviolet radiation over a majority of the wavelength range of at least 340 but less than 400 nanometers. The reflective microporous layer has a continuous phase comprising a nonfluorinated organic polymer and is diffusely reflective of solar radiation over a majority the wavelength range of 400 to 2500 nanometers, inclusive. The composite cooling film has an average absorbance over the wavelength range of 8 to 13 microns of at least 0.85. An article comprising the composite cooling film adhered to a substrate is also disclosed.

Composite cooling film and article including the same

Anti-reflective article includes a layer defining an anti-reflective surface. The anti-reflective surface includes a series of alternating micro-peaks and micro-spaces extending along an axis. The surface also includes a series of nano-peaks extending along an axis. The nano-peaks are disposed at least on the micro-spaces and, optionally, the micro-peaks. The article may be disposed on a photovoltaic module or skylight to reduce reflections and resist the collection of dust and dirt.

Anti-reflective surface structures

A composite cooling film () comprises an antisoiling layer () secured to a first major surface of a reflective microporous layer (). The reflective microporous layer () comprises a first fluoropolymer and is diffusely reflective of electromagnetic radiation over a majority of wavelengths in the range of 400 to 2500 nanometers. The antisoiling layer () has an outwardly facing antisoiling surface () opposite the micro-voided polymer film. An article () comprising the composite cooling film () secured to a substrate () is also disclosed.

A polymeric film including a major surface having a plurality of intersecting extended structures is described. For at least a majority of the structures in the plurality of extended structures: each structure extends along a length of the structure, has an average width along a direction transverse to the length and generally along the first major surface, and has an average height along a direction generally perpendicular to the first major surface; and the average width of the structure may be in a range of 1 to 200 micrometers, the average height of the structure may be in a range of 1 to 200 micrometers, and the length may be at least 3 times the average width. The extended structures may be randomly or pseudorandomly oriented and may be formed by microreplicating a surface of a paper.

Polymeric film having structured surface

Films and articles are described comprising a microstructured surface having an array of peak structures and adjacent valleys. For improved cleanability, the valleys preferably have a maximum width ranging from 10 microns to 250 microns and the peak structures have a side wall angle greater than 10 degrees. The peak structures may comprise two or more facets such as in the case of a linear array of prisms or an array of cube-corners elements. The facets form continuous or semi-continuous surfaces in the same direction. The valleys typically lack intersecting walls. Also described are methods of making and methods of use. The microstructured surface of the article can be prepared by various microreplication techniques such as coating, injection molding, embossing, laser etching, extrusion, casting and curing a polymerizable resin; and bonding microstructured film to a surface or article with an adhesive.

Microstructured surface with increased microorganism removal when cleaned, articles and methods

A light redirecting film includes a first layer disposed on a second layer with structured major surfaces of the first and second layers facing each other. An optically reflective layer or a metal layer is disposed between the first and second layers. The first layer can be a hot melt adhesive layer and the second layer can be a polymeric layer. The first and second layers can be unitary layers. The first layer can be a first polymeric layer having a softening temperature T1 and the second layer can be a second polymeric layer having a softening temperature T2 greater than T1. Heating and/or applying pressure to the film changes an optical characteristic of the film by less than about 5%.

Light redirecting film

A composite cooling film including a reflective nonporous inorganic-particle-filled organic polymeric layer, an ultra-violet-protective layer or layers, and an antisoiling layer.

Composite cooling film comprising a reflective nonporous organic polymeric layer and a UV-protective layer

A composite cooling film including non-fluorinated organic polymeric layer, a metal layer disposed inwardly of the non-fluorinated organic polymeric layer, and an antisoiling, ultraviolet-absorbing hardcoat layer that is disposed outwardly of the non-fluorinated organic polymeric layer.

Composite cooling film comprising an organic polymeric layer, a UV-absorbing layer, and a reflective metal layer

Lamination transfer films and methods for transferring a structured layer to a receptor substrate. The transfer films include a carrier substrate having a releasable surface, a sacrificial template layer applied to the releasable surface of the carrier substrate and having a non-planar structured surface, and a thermally stable backfill layer applied to the non-planar structured surface of the sacrificial template layer. The sacrificial template layer is capable of being removed from the backfill layer, such as via pyrolysis, while leaving the structured surface of the backfill layer substantially intact.

Structured lamination transfer films and methods

An emissive article includes an OLED having a light emission surface, a circular polarizer, and a light extraction film optically between the OLED and the circular polarizer and being optically coupled to the light emission surface. The light extraction film includes a two-dimensional structured layer of extraction elements having a first index of refraction and a pitch in a range from 400 to 800 nm and a backfill layer including a material having a second index of refraction different from the first index of refraction.

Emissive article with light extraction film

Variable index light extraction layers () that contain a plurality of microreplicated posts () are described. The variable index light extraction layers contain a plurality of microreplicated posts (), a first region including a first lower-index substance () and a second region including a second higher-index substance (). Optical films can use the variable index light extraction layers () in front lit or back lit display devices.

Variable index light extraction layer with microreplicated posts and methods of making the same

Extended area lighting devices include a light guide and diffractive surface features on a major surface of the light guide. The diffractive surface features provide low distortion for viewing objects through the light guide. Light from discrete light source(s) is injected into the light guide, and the diffractive surface features interact with the injected light to couple guided-mode light out of the light guide. The out-coupled light produces one or more bands whose apparent shape changes with viewing position. The bands may be bright bands that correspond to the discrete light sources, or dark bands associated with an optional non-uniform reflective structure extending along a side surface of the light guide. Multiple bands may form a pattern that changes with viewing position, the pattern of bands having a 3-dimensional appearance for at least some viewing positions. The lighting devices can be used as luminaires for general lighting or decorative lighting.

Diffractive lighting devices with 3-dimensional appearance

Extended area lighting devices include a light guide and diffractive surface features on a major surface of the light guide, at least some diffractive surface features adapted to couple guided-mode light out of the light guide. The diffractive features include first and second diffractive features disposed on respective first and second portions of the major surface. A patterned light transmissive layer, including a second light transmissive medium, optically contacts the second diffractive features but not the first diffractive features. A first light transmissive medium optically contacts the first but not the second diffractive features. The first and second portions may define indicia, and the first and second diffractive features provide low distortion for viewing objects through the light guide such that the indicia is not readily apparent to users when guided-mode light does not propagate within the light guide. Optical films having such diffractive features are also disclosed.

Lighting devices with patterned printing of diffractive extraction features

Growing community of inventors

Woodbury, MN, United States of America

Vivian Wynne Jones