3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

3m Innovative Properties

Timothy J Nevitt

Michael F Weber

Andrew John Ouderkirk

Carl A Stover

John Allen Wheatley

Richard C Allen

Arthur L Kotz

Gilles J Benoit

Adam D Haag

Biswaroop Majumdar

Lockwood W Carlson

Zhaohui Yang

Kristopher J Derks

Edward J Kivel

Zhisheng Yun

Rolf W Biernath

Charles David Hoyle

David G Freier

Timothy J Hebrink

John D Le

Robert D Taylor

Roger J Strharsky

William Ward Merrill

Timothy L Wong

Matthew B Johnson

Susan L Kent

Tao Liu

Ryan T Fabick

Martin E Denker

David T Yust

Mark B O'Neill

Laurence R Gilbert

Ronald J Tabar

Takashi Harada

Stephen A Johnson

James M Jonza

Craig R Schardt

Gregg A Ambur

Peter D Condo

Guanglei Du

William J Bryan

David J W Aastuen

Elisa M Cross

Robert R Kieschke

Kazuhiko Mizuno

James Hillis

Owen M Anderson

Matthew E Sousa

Sun-Yong Park

Brianna N Wheeler

Myron K Jordan

Fuguo Xu

Sara Suzanne Merritt

Takashi Fujita

Albert I Everaerts

William Blake Kolb

Robert L Brott

Erin A McDowell

Encai Hao

Sanford Cobb, Jr

Raghunath Padiyath

Charles L Bruzzone

Neeraj Sharma

Robert S Moshrefzadeh

Yongshang Lu

Bing Hao

Nicholas T Gabriel

Daniel J Schmidt

William L Kausch

Jo Anne Etter

Andrew T Ruff

Christopher A Haak

Robert M Jennings

Yaoqi Joe Liu

Kevin M Hamer

Yorinobu Takamatsu

Richard Yufeng Liu

Terence D Neavin

Gregory F King

Bert T Chien

Quinn D Sanford

Makoto Ishikawa

Keith R Bruesewitz

Ronald K Thery

Seong Taek Lee

William B Black

James R Miller

Nicholas C Erickson

Onur Sinan Yordem

David A Rosen

Bill H Dodge

Max Powers

James A Olson

Kayla A McGrath

John A Wheatley

Gary B Hanson

Seo-Hern Lee

Jeffrey A Boettcher

Guy M Kallman

Brianna N Nieson

An optical film and a polarizing beam splitter (PBS) including the optical film is described. The optical film includes a first optical stack disposed on, and spaced apart by one or more spacer layers from, a second optical stack. When the optical film is disposed between, and adhered to, hypotenuses of first and second prisms to form a PBS and a cone of light is incident on the PBS making an incident angle of about 40 to 50 degrees with the optical film, the PBS has: an average optical reflectance Rs greater than about 95% for a first polarization state; an average optical transmittance Ts less than about 0.012% for the first polarization state; an average optical transmittance Tp less than about 98.5% for a second polarization state; and an average optical reflectance Rp less than about 0.25% for the second polarization state.

Optical film and polarizing beam splitter

A reflective polarizer has substantially distinct blue, green and red-infrared reflection bands for substantially normally incident light. A display system includes a display panel including blue, green and red light emitting pixels having respective blue, green and red peak wavelengths and respective blue, green and red FWHMs; and the reflective polarizer disposed on the light emitting pixels. The reflective polarizer: reflects at least about 60% of the incident light for each of the blue and green peak wavelengths and at least about 40% of the incident light for the red peak wavelength for a first polarization state; transmits at least about 60% of the incident light for each of the blue, green and red peak wavelengths for an orthogonal second polarization state; and has an absorption peak at a wavelength between the green and red FWHMs.

Reflective polarizer and display system

A display system includes a display panel including a plurality light emitting pixels and a reflective polarizer disposed on the light emitting pixels. The reflective polarizer can have a reflection band having a lower overlap with an emission spectrum of red light emitting pixels for substantially normally incident light and a higher overlap with the emission spectrum of the red light emitting pixels for at least one incident angle greater than about 40 degrees. The reflective polarizer can have a reflection band overlapping an emission spectrum of blue light emitting pixels for substantially normally incident light.

An optical system for displaying first and second images to a viewer is provided. A reflective polarizer is disposed between the second display and the viewer and is oriented obliquely relative to the first display. An optical stack including a partial reflector and a retarder layer is disposed between the reflective polarizer and the second display. The reflective polarizer reflects at least 70% of the incident light having a first polarization state and transmits at least 60% of the incident light having an orthogonal second polarization state. The partial reflector reflects at least 70% of the incident light for each of the polarization states. For each of the first and second polarization states and for each of a blue-green wavelength and a green-red wavelength the reflective polarizer transmits at east 70% of the incident light and the partial reflector transmits at least 60% of the incident light.

Optical system

An optical system () includes an emissive display () and a reflective polarizer () disposed on the display (). The display () includes a blue pixel () emitting light having a peak at a wavelength λ. For substantially normally incident light: for the wavelength λ, the reflective polarizer () reflects at least 30% of the incident light having a first polarization state (b) and transmits at least 75% of the incident light having an orthogonal second polarization state(a); and for at least one wavelength λgreater than λ, λ-λ≤50 nm, the reflective polarizer () transmits at least 75% of the incident light for each of the first and second polarization states. For the wavelength λ, the reflective polarizer () has a maximum optical transmittance Tfor light incident at a first incident angle, and an optical transmittance T/2 for light incident at a second incident angle greater than the first incident angle by less than about 50 degrees.

Reflective polarizer and optical system

Optical films are described. In particular, optical films including a reflective polarizer portion and an infrared portion, with no adhesive between these two portions, are described. These optical films may be particularly suitable for combiner applications, including automotive heads up display applications with demanding ambient environments.

Optical film including infrared reflector and multilayer reflective polarizer with crystalline low index layers

An optical system for displaying an image to a viewer includes a pixelated display including a plurality of pixels emitting unpolarized image light; a partial reflector having an average optical reflectance of at least 30% in a predetermined wavelength range; a first retarder layer disposed between the pixelated display and the partial reflector; a second retarder layer disposed between the first retarder layer and the partial reflector; and a reflective polarizer disposed between the first and second retarder layers. The reflective polarizer is adapted to increase a brightness of a pixelated image emitted by the pixelated display and displayed to the viewer by recycling at least a portion of unpolarized image light emitted by the pixels; and receive an image ray reflected by the partial reflector and reflect the received image ray toward the viewer.

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

Multilayer reflective polarizers are described. In particular, multilayer reflective polarizers that include both crystalline high index layers and low index layers are disclosed. These reflective polarizers may be particularly suitable for automotive, architectural, and industrial applications.

Multilayer reflective polarizer with crystalline low index layers

A display () including a display panel () and a polarizer () disposed to receive a light () output of the display panel () is described. The polarizer () may be a reflective polarizer () or a circular polarizer () incorporating a reflective polarizer (). The display panel () includes a plurality of pixels and each pixel includes a plurality of subpixels. The reflective polarizer () has a first reflection band, wherein at normal incidence, the first reflection band has a long wavelength band edge wavelength between peak emission wavelengths of two subpixels in the plurality of subpixels. The reflective polarizer () may be disposed between an absorbing polarizer () and a retarder () in a circular polarizer (). The reflective polarizer () may have substantially non-overlapping first, second, and third reflection bands.

Polarizer and display including same

An optical system including a first optical element having a curved first major surface and an optical stack bonded and conforming to the curved first major surface of the first optical element is described. The optical stack includes a reflective polarizer substantially transmitting light having a first polarization state and substantially reflecting light having an orthogonal second polarization state and a non-adhesive flexible optical layer bonded to the reflective polarizer and comprising substantially parallel opposing first and second major surfaces. At least one location on the non-adhesive flexible optical layer has an optical retardance of less than about 100 nm or greater than about 200 nm at a wavelength of about 550 nm.

Optical components and optical systems

An optical assembly includes an integral lens assembly having one or more lenses bonded to each other with spaced apart major first and second lens surfaces. First and second optical films are bonded to respective major first and second lens surfaces. The first and second optical films includes a plurality of polymeric layers. Each of the polymeric layers have an average thickness of less than about 500 nm. For a substantially normally incident light and a visible wavelength range the plurality of polymeric layers in the first optical film has an average optical transmittance and an average optical reflectance of greater than about 70% for a first polarization state and an orthogonal second polarization state, respectively. The plurality of polymeric layers in the second optical film has an average optical transmittance of greater than about 70% for at least one of the first and second polarization states.

Optical systems

An OLED display including a display panel and a color-correction component is described. A plurality of comparative display panels otherwise equivalent to the display panel but having one or more different optical thicknesses of OLED layers have a maximum white-point color shift from 0 to 45 degrees of WPCSand a white-point axial efficiency of WPAE. The plurality of comparative display panels defines a performance curve along a boundary of performance points. The OLED display and the display panel have respective maximum white-point color shifts from 0 to 45 degrees of WPCSand WPCSand respective white-point axial efficiencies of WPAE and WPAE. WPCSand WPAEdefines a performance point of the display panel to the right of the performance curve and WPCSand WPAE defines a performance point of the OLED display above or to the left of the performance curve. Methods of making the OLED display are described.

Organic light emitting diode with color-correction for maximum white-point color shift

Broadband visible reflectors are disclosed. In particular, broadband visible reflectors with reduced on-axis blue reflectivity are described. Broadband visible reflectors that appear yellow in reflection are described. Such broadband visible reflectors may be used in backlights and displays.

Broadband visible reflector

Optical films, such as reflective polarizer films, and optical systems including the optical films are described. An optical system includes one or more optical lenses having at least one curved major surface, a partial reflector, and a reflective polarizer. For a substantially normally incident light in a predetermined wavelength range extending at least from about 450 nm to about 600 nm: the partial reflector has an average optical reflectance of at least 30%, and the reflective polarizer has an average optical reflectance Rs for a first polarization state, an average optical transmittance Tp for an orthogonal second polarization state, and an average optical reflectance Rp for the second polarization state, where Tp≥80%, Rp≤1%, and 50%≤Rs≤95%.

Optical system and optical film

Growing community of inventors

Red Wing, MN, United States of America

Timothy J Nevitt