3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

Other

3m Innovative Properties

3m Intellectual Properties Company

Michael F Weber

Andrew John Ouderkirk

Timothy J Nevitt

Carl A Stover

John Allen Wheatley

James M Jonza

Sanford Cobb, Jr

Richard C Allen

Olester Benson, Jr

Kenneth A Epstein

William Ward Merrill

Timothy J Hebrink

Rolf W Biernath

David G Freier

Craig R Schardt

Gilles J Benoit

Adam D Haag

William D Coggio

John C Schultz

Charles L Bruzzone

Tao Liu

Shandon Dee Hart

Stephen A Johnson

Zhaohui Yang

Audrey A Sherman

Sumita Basu Mitra

William Blake Kolb

Gary Timothy Boyd

Michael Benton Free

Encai Hao

Raghunath Padiyath

Kui Chen-Ho

Peter D Condo

Richard John Pokorny

Michael Alan Meis

Mieczyslaw H Mazurek

James M Nelson

Michael L Steiner

Scott Melvyn Tapio

Robert L Brott

Sharon Mary Simpson

Marc Dudley Radcliffe

Byron E Trotter

David L Wortman

Arthur L Kotz

Biswaroop Majumdar

Lockwood W Carlson

James E Watson

Kristopher J Derks

Charles David Hoyle

Edward J Kivel

Robert D Taylor

Kevin M Hamer

Laurence R Gilbert

Mark B O'Neill

Joan M Strobel

Jeffery N Jackson

Martin E Denker

Yufeng Liu

Huiwen Tai

Lan Hong Liu

Charles A Marttila

Robert F Kamrath

William J Bryan

Yaoqi Joe Liu

David J W Aastuen

Cristina U Thomas

Stephen K Eckhardt

Brian W Ostlie

Fei Lu

Kathryn R Bretscher

Mark E Gardiner

John P Baetzold

Paul J Weber

Jeffrey C Chang

Robert S Moshrefzadeh

Manoj Nirmal

Ta-Hua Yu

Timothy L Hoopman

Glenn E Casner

Leland Ray Whitney

David T Yust

Nang T Tran

Andrew T Ruff

Stephen J Willett

Tommie W Kelley

Hung Thien Tran

Thomas J Ludemann

Ellen O Aeling

Susannah C Clear

Carsten Franke

Nicholas A Stacey

Terence D Neavin

Diane North

Robert R Kieschke

Jeffrey A Peterson

Bert T Chien

Bruce A Nerad

Feng Bai

Jennifer Rebecca Yi

Polarizer stacks are described. More particularly, polarizer stacks that include an absorbing polarizer and multiple reflective polarizers, including at least one collimating reflective polarizer are described. Such polarizer stacks are capable of emitted light that is both collimated and color neutral. Backlights incorporating such polarizer stacks are also described.

Absorbing, reflecting and collimating polarizer stack and backlights incorporating same

Optical constructions are disclosed. A disclosed optical construction includes a reflective polarizer layer, and an optical film that is disposed on the reflective polarizer layer. The optical film has an optical haze that is not less than about 50%. Substantial portions of each two neighboring major surfaces in the optical construction are in physical contact with each other. The optical construction has an axial luminance gain that is not less than about 1.2.

Optical construction and display system incorporating same

A cargo reversed tricycle apparatus and method providing an open front, allowing the encompassing of cargo and a low center of weight when carrying, allowing more options in loading, transporting, and unloading and improved stability and maneuverability. A front-open frame provides cargo space between the front wheels, and allows for a variety of ways to load, transport, and unload the cargo. A dual-crossed-drag-link steering arrangement is provided, where a drag-link driver linked to the handlebar pushes and pulls shaped link rods, which transfer the forces through pivot links on turning bars on the two front-wheel units, which thereby turn in the intended direction.

Cargo reversed tricycle apparatus and method

A hybrid polarizer includes an absorbing element having a first major surface and a second major surface. The hybrid polarizer also includes a first birefringent reflective polarizer disposed on the first major surface of the absorbing element, the first birefringent reflective polarizer having a first pass axis and a first block axis. The hybrid polarizer further includes a second birefringent reflective polarizer disposed on the second major surface of the absorbing element, the second reflective polarizer having a second pass axis and a second block axis.

Hybrid polarizer

Optical lenses are described and include a polymeric interference filter disposed on a curved polymeric substrate. The optical lens has an average light transmission of less than 2% across a band of blue light from 400 nm to at least 420 and up to 440 nm and substantially transmits blue light greater than 450 nm.

Blue edge filter optical lens

Low loss, high reflectivity wide band mirror films provide a desired mix of specular reflection and diffuse reflection or scattering to provide semi-specular reflectivity. The mirror films generally include both a specularly reflective multilayer optical film (MOF) having a wide reflection band, and a scattering layer. In some cases a low refractive index TIR layer is sandwiched between the MOF and the scattering layer. In other cases the scattering layer contacts the MOF directly. In embodiments that include the TIR layer, the TIR layer preferably has a nanovoided morphology and includes a plurality of particles and a polymer binder. In embodiments wherein the scattering layer contacts the MOF directly, the scattering layer preferably also has a nanovoided morphology and includes a plurality of particles and a polymer binder.

Wide band semi-specular mirror film incorporating nanovoided polymeric layer

An optical filter including a polymeric multilayer optical film is provided. The optical film has a reflection band having a reflection band edge that is, independent of location, one of a short wavelength band edge at a short wavelength side of the reflection band and a long wavelength band edge at a long wavelength side of the reflection band. The reflection band edge has a normal incidence reflection band edge wavelength that varies with location and that is a first wavelength at a first location and a second wavelength at a second location different from the first location. The first wavelength may be higher than the second wavelength by at least 2 percent.

Optical filter

A backlight includes a front and back reflector forming a light recycling cavity and one or more light source members disposed to emit light into the light recycling cavity. The front reflector being partially reflective to provide an output illumination area. The front reflector has a blue sloped transmission spectra, at normal incidence with a range among bin values from 15% to 100%.

Illumination systems with sloped transmission spectrum front reflector

Certain filters have been found to enhance color discrimination for individuals with color vision deficiency (CVD), aka color-blind individuals. The filters generally include a multilayer optical film with a strong, narrow reflection band in part of the green region of the visible spectrum. The film has an average internal transmission from 420-680 nm of at least 50%, 60%, or 70%, and an average internal transmission&#x2264;10%, 5%, 2%, or 1% over a 10 nm wide range that includes 550 nm associated with a reflection band having a width (FWHM) of 60 nm or 50 nm or less. The filter may include a magenta layer disposed on a viewer side of the multilayer optical film to reduce glare, the magenta layer selectively absorbing green light. The magenta layer combined with the multilayer optical film may provide a rejection band whose width (FWHM) is 60 nm or less.

Filters to enhance color discrimination for color vision deficient individuals

A broadband partial reflector includes a multilayer polymeric optical film having a total number of optical repeating units that monotonically increases in thickness value from a first side to a second side of the multilayer polymeric optical film. A baseline optical repeating unit thickness profile is defined by a first plurality of optical repeating units and having a first average slope, and a first apodized thickness profile of the multilayer polymeric optical film is defined by a second plurality of optical repeating units having a second average slope being at least 5 times greater than the first average slope. The second plurality of optical repeating units define the first side of the multilayer polymeric optical film and join the first plurality of optical repeating units. The second plurality of optical repeating units are in a range from 3-15% of the total number of optical repeating units.

Apodized broadband partial reflectors

Growing community of inventors

Shoreview, MN, United States of America

Michael F Weber