3m Innovative Properties Company

Other

Mark B O'Neill

Timothy J Hebrink

Keith Michael Kotchick

Michael F Weber

Philip Edwin Watson

Timothy J Nevitt

Jiaying Ma

Naiyong Jing

Shandon Dee Hart

Kenneth A Epstein

Carl A Stover

Ronald David Jesme

Adam D Haag

Matthew B Johnson

Hassan Sahouani

Aaron K Nienaber

Sergey Lamansky

Mark E Gardiner

Kim Marie Vogel

Joseph B Eckel

Robert S Moshrefzadeh

Diane North

Edward J Kivel

Gary E Gaides

Bert T Chien

Andrew J Henderson

David J Lamb

Rajesh K Katare

Eric M Peterson

William A Hibbard

Richard John Pokorny

Stephen A Johnson

Olester Benson, Jr

James M Jonza

Sanford Cobb, Jr

John P Baetzold

Tri Dinh Pham

David G Freier

Daniel J Schmidt

William L Kausch

Mark D Weigel

Shawn C Dodds

David L Wortman

Thomas J Ludemann

Carsten Franke

Elisa M Cross

Susan L Kent

Jeffrey A Peterson

Laurence R Gilbert

Joan M Strobel

Huiwen Tai

James R Miller

John F Van Derlofske, Iii

Brent A Hedding

Patrick H Marushin

Guy M Kallman

James A Olson

John A Wheatley

Gary B Hanson

Chiu Ping Wong

Stephen J Kuncio

Ellen R Bösl

Donovan C Karg, Jr

Meghan A Bradley

Tracey D Sorensen

Robert W Horn

A method of making an optical film for control of light includes positioning a first mixture on a substrate, wherein the first mixture includes a first plurality of magnetizable particles dispersed in a first resin, assembling the first plurality of magnetizable particles into a desired structure for the control of the light by rotating modulation of at least a first magnetic field relative to the first plurality of magnetizable particles, and vitrifying the first resin while the first plurality of magnetizable particles are in the desired structure.

Magnetizable particles forming light controlling structures and methods of making such structures

According to one embodiment, a solar device, comprises one or more photovoltaic cells disposed in an encapsulant and a light control structure including a louver film having a series of louver structures, wherein each louver structure includes one or more groupings of a plurality magnetizable particles aligned at least in a first orientation dispersed in a binding matrix. The light control structure substantially transmits light incident at a first angle and substantially limits transmission of light incident at a second angle. Each louver structure is spaced apart from an adjacent louver structure, wherein each louver structure is substantially aligned in a plane substantially parallel to an adjacent louver structure.

Device with light control structure having magnetizable particles

Multilayer infrared (IR) reflecting films are provided. An optical repeating unit of the film include a plurality of optical polymeric layers arranged to reflect light by constructive and destructive interference. Optical layer A is a high refractive index polymeric layer, and optical layer B is a low refractive index isotropic polymeric layer containing fluoropolymers. The film has an average reflectance of about 50% to about 100% in a near infrared wavelength range of about 850 nm to about 1850 nm, and an average transmission of about 70% to about 90% in a visible light range.

Visibly transparent broadband infrared mirror films having fluoropolymers and 7:1:1:7:1:1 layer thickness ratio

A light redirecting film defining a longitudinal axis, and including a base layer, an ordered arrangement of a plurality of microstructures, and a reflective layer. The microstructures project from the base layer, and each extends across the base layer to define a corresponding primary axis. The primary axis of at least one of the microstructures is oblique with respect to the longitudinal axis. The reflective layer is disposed over the microstructures opposite the base layer. When employed, for example, to cover portions of a PV module tabbing ribbon, or areas free of PV cells, the films of the present disclosure uniquely reflect incident light.

Light redirecting film useful with solar modules

The present disclosure generally relates to durable solar mirror films, methods of making durable solar mirror films, and constructions including durable solar mirror films. In one embodiment, the present disclosure relates to a solar mirror film comprising: a multilayer optical film layer including having a coefficient of hygroscopic expansion of less than about 30 ppm per percent relative humidity; and a reflective layer having a coefficient of hygroscopic expansion.

Durable solar mirror films

Methods of making a multilayer optical film are described. In one embodiment, the method comprises providing a multilayer optical film and disposing onto the multilayer optical film a plurality of layers deposited by layer-by-layer self-assembly of nanoparticles, polymers, and combinations thereof. The multilayer optical film typically comprises a plurality of alternating polymeric layers of a low refractive index layer and a high refractive index layer that reflects at least one bandwidth of electromagnetic radiation ranging from ultraviolet to near infrared. Multilayer optical film articles are described comprising a plurality of layers disposed onto the multilayer optical film, wherein the plurality of layers comprises layer-by-layer self-assembled nanoparticles, polymers, and combinations thereof. The multilayer optical films are suitable for various uses including reflective polarizers for optical displays such as LCDs or LEDs, architectural film applications, window film applications, and solar power concentrating mirrors.

Method of making multilayer optical film comprising layer-by-layer self-assembled layers and articles

A multilayer optical film including a stack of microlayers arranged into optical repeat units. At a design angle of incidence, such as normal incidence, the stack provides a 1order reflection band, a 2order reflection band, and optionally a 3order reflection band. The 2order reflection band substantially overlaps the 1and/or 3order reflection bands to form a single wide reflection band. The wide reflection band may cover at least a portion of visible and infrared wavelengths. The multilayer optical film may include an additional optical layer which maybe be an anti-glare layer and/or may be an absorbing layer. The multilayer optical film is suitable for use as a window film.

Multilayer optical film having overlapping harmonics

An optical film that includes a reflective polarizer and a stretched polymer film is disclosed. The stretched polymer film is laminated to the reflective polarizer, and the stretched polymer film exhibits a refractive index symmetry point at an angle of incidence in air of at least about 60 degrees in a plane of incidence parallel to a direction of greatest stretch.

Optical film

A backlight that includes an illumination device that has at least one light source, a circular-mode reflective polarizer, and a specular partial reflector is disclosed. The specular partial reflector is disposed between the illumination device and the circular-mode reflective polarizer. Furthermore, the specular partial reflector is in substantially direct polarization communication with the circular-mode reflective polarizer.

Backlighting system including a specular partial reflector and a circular-mode reflective polarizer

A backlight () that includes a front reflector () and a back reflector () that form a hollow light recycling cavity () having an output surface () is disclosed. The front reflector includes at least four directional recycling films (). The backlight also includes a semi-specular diffuser disposed between the front reflector and the back reflector, and one or more light sources () disposed to emit light into the light recycling cavity.

Hollow backlight with structured films

In a display backlight () a specular partial reflector () is placed between a circular-mode reflective polarizer () and an illumination device (). The specular partial reflector () recycles otherwise unused polarized light (L) reflected from the circular-mode reflective polarizer () which results in an optimized backlight brightness. The main application of the backlight () is in liquid crystal displays ().

Growing community of inventors

Stillwater, MN, United States of America

Mark B O'Neill