3m Innovative Properties Company

Craig R Schardt

John Allen Wheatley

Andrew John Ouderkirk

Catherine A Leatherdale

Mark T Anderson

Michael F Weber

Martin B Wolk

Kenneth A Epstein

Olester Benson, Jr

Mieczyslaw H Mazurek

Michael Benton Free

Anatoly Z Rosenflanz

Manoj Nirmal

Bing Hao

Charles A Marttila

Stephen J Willett

John C Schultz

Matthew H Frey

Timothy J Hebrink

Kenton D Budd

David Scott Thompson

Zhaohui Yang

Wendy L Thompson

William J Bryan

David J W Aastuen

Karl K Stensvad

D Scott Thompson

Justin P Meyer

James Robert Onstott

James E Watson

Brian W Ostlie

Nicole J Wagner

Timothy J Nevitt

Gilles J Benoit

Ronald David Jesme

Gary Timothy Boyd

Adam D Haag

Rolf W Biernath

David G Freier

Joseph Clark Carls

Kristopher J Derks

Edward J Kivel

Xudong Fan

Eric J Borchers

Myron K Jordan

Alessandra O Chiareli

Lawrence J Donalds

Stephen J Willet

Nicholas D Petkovich

Scott J Kienitz

Kenneth L Smith

Michael Alan Meis

Michael Nelson

Mikhail L Pekurovsky

Zhisheng Yun

Hao Wu

Donald Kent Larson

Philip Edwin Watson

Matthew S Stay

Brian E Brooks

Cary A Kipke

Andrew P Bonifas

Joan M Noyola

Shawn C Dodds

Tommie W Kelley

Erik A Aho

Ann M Gilman

Larry A Meixner

Craig R Sykora

Mohsen Salehi

Ryan C Shirk

Daniel J Treadwell

Scott E Brigham

Kathy L Hagen

Stephan J Pankratz

Derek W Patzman

Andrew Bonifas

Vadim N Savvateev

Patrick M Campbell

Anthony J Piekarczyk

Constand E Yemelong

Richard F Griffith

Amy J Hite

Stephen C King

Lowell C Frank

Dong Lu

Luke A Schroeder

Nicole D Petkovich

James E Anderson

Dwight E Baldwin

Duane E Preiss

Adam Overvig

Michele Cotrufo

Xuexue Guo

Andrea Alu

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.

Optical constructions

An optical system for displaying a virtual image to a viewer includes stacked integral first reflective polarizer and integral second reflective polarizer, a display, and a mirror. For substantially normally incident light: for at least one visible wavelength in a first wavelength range, the first reflective polarizer reflects at least 60% of the incident light having a first polarization state and transmits at least 60% of the incident light having an orthogonal second polarization state, and the second reflective polarizer transmits at least 60% of the incident light for each of the first and second polarization states; and for at least one infrared wavelength in a second wavelength range, the first reflective polarizer reflects at least 60% of the incident light having the first polarization state and transmits at least 60% of the incident light having the second polarization state, and the second reflective polarizer reflects at least 60% of the incident light having the second polarization state and transmits at least 20% of the light having the first polarization state.

Polarization beam splitter and hot mirror for heads up display

An optical system, including a reflective polarizer, and a display and a mirror disposed on a same side of, and generally facing, the reflective polarizer. The reflective polarizer may transmit at least 80% of incident light having a first polarization state and may reflect at least 80% of incident light having a second polarization state, and the mirror may reflect at least 80% of the incident light for each of the first and second polarization states. The central locations of the display, reflective polarizer, and mirror may define a midplane which includes first, second, and third regions, such that the first region includes portions of the image rays that pass at least once across the region, the second region includes portions of the image rays that pass at least twice across the region, and the third region includes portions of the image rays that pass three times across the region. The first, second, and third regions may have respective areas A, A, and A, such that A/Ais greater than or equal to about 0.20, or 0.22, or 0.24, or 0.26, or 0.28, or 0.30.

Compact heads-up display

The present disclosure provides lamination transfer films and use of the lamination transfer films, particular in the fabrication of architectural glass elements, such as those used in Insulated Glass Units (IGUs). The lamination transfer films may be used to transfer functional layers and structures. The lamination transfer films may include a support film that can be removed during the transfer process, and the transferred materials are primarily inorganic. The resulting transferred structures on glass generally have high photo- and thermal-stability, and therefore can successfully be applied to the glass surfaces that are interior to the cavity within an IGU. The lamination transfer films can also be patterned such that macroscopic patterns of microoptical elements can be applied on a glass surface.

Microoptics for glazing

Methods for management of a powertrain system in a vehicle. The methods receive data or signals from multiple sensors associated with the vehicle. Optimum thresholds for classifications of the sensor data can be changed based injecting signals into the powertrain system and receiving responsive signals. Expected priorities for the sensor signals can be altered based upon attributes of the signals and confirming actual priorities for the signals. Look-up tables for engine management can be modified based upon injecting signals into the powertrain system and measuring a utility of the responsive signals. The methods can thus dynamically alter and modify data for powertrain management, such as look-up tables, during vehicle operation under a wide range of conditions.

Causal analytics for powertrain management

A system for use in wirelessly monitoring a pipeline such as a natural gas pipe. The system includes a locator configured to wirelessly transmit power and a subsoil sensor marker located adjacent the pipe and configured to wirelessly communicate with the locator. The sensor marker includes a microcontroller, a memory module, a sensor configured to sense the presence of a gas, and a power module. The power module is configured to harvest a sufficient amount of the power wirelessly transmitted from the locator in order to operate the microcontroller to take a measurement via the sensor, save the measurement in the memory module, and wirelessly transmit the measurement to the locator.

Wireless power transfer and sensing for monitoring pipelines

A system having a concealed communications element like a telecommunication antenna is described. More specifically, The system has a communications element that is concealed by a highly reflective multilayer polymer optical film. The first element of the multilayer polymer optical film is a core layerthat is made up of a multilayer optical stack. The multilayer optical stack of core layerincludes two alternating polymeric layers. The multilayer polymer optical film may optionally also include a protective layer(for example, a hardcoat or an over laminate) that is positioned between the viewer and the core layer. The protective layermay include one or more UV absorbers to aid in durability of the multilayer polymer optical film against UV-degradation. Multilayer polymer optical filmmay optionally also include an adhesive layerthat is positioned between the core layerand a surface onto which the multilayer polymer optical film is to be adhered.

System having a telecommunications element being concealed by a reflective structure comprising a polymer optical multilayer film

Projection subsystems are described. More, particularly, projection subsystems that include a light source and a polarizing beam splitter are described. The polarizing beam splitters of the presently described projection subsystems are capable of avoiding performance degradation even after exposure to large doses of incident light.

Projection subsystem

A composite article having a conductive layer on at least a portion of a flexible substrate. Electrical connectivity between various portions of the substrate can be obtained through this conductive layer. The conductive layer comprises a conductive surface, and there is a patterned layer on at least a portion of a first region of the conductive surface. The patterned layer comprises a conductive material having a surface roughness, and is in electrical contact with the conductive surface. An overcoat layer is present on at least a portion of the first region, such that the overcoat layer has a thickness less than the surface roughness, such that the conductive layer within the first region is covered by the overcoat layer, and such that at least a portion of the patterned layer substantially protrudes above the overcoat layer. The protruding portion permits electrical contact with the patterned layer, and via the conductive layer to other parts of the patterned layer and/or electrically conductive connectors to external electronic devices. Methods for forming the composite article are also disclosed. Methods of making such composite articles are also disclosed.

Overcoated patterned conductive layer and methods

The present disclosure describes optical elements and optical devices that use the optical elements to allow the output of two imagers to be combined onto a single optical axis. Each of the two imagers can be based on alternate polarization directions, and the disclosed embodiments can enable high contrast 3D projectors without requiring either time or polarization sequencing. The present disclosure further describes projection systems that include the optical devices.

Two imager projection device

Growing community of inventors

Woodbury, MN, United States of America

Craig R Schardt