3m Innovative Properties Company

Andrew J Piepel

Robert S Moshrefzadeh

Thomas R Gehring

Gary Timothy Boyd

Patrick A Thomas

Michael L Graetz

Mark L Schuleman

Kenneth L Yarina

A flexible screen with a mechanism for releasably attaching the screen to a transparent door or window is disclosed. A method of use is also disclosed.

Screens and methods for displaying information

An optical system with improved color shift characteristics is described. Preferably, the system comprises a rear projection display that includes a light source providing light in first and second distinct polarization states, and a beaded screen.

Optical system with reduced color shift

A rear projection screen has one or more internal layers that reduce the speckle perceived by a viewer. A screen assembly has a light-source side and a viewing side. The assembly includes a screen layer to disperse light passing through the screen from the light source side and a matte surface disposed on the viewing side of the screen assembly to reduce ambient glare. A first speckle contrast reducing layer is disposed between the screen layer and the matte surface to reduce speckle formed at the matte surface.

Rear projection screen with reduced speckle

Growing community of inventors

Hudson, WI, United States of America

Andrew J Piepel