3m Innovative Properties Company

Todd M Johnson

Patrick H Marushin

Bryan V Hunt

Alan B Campbell

Dale L Ehnes

John F Van Derlofske, Iii

Mark R Dupre

Stephen J Dreyer

Tetsuya Toma

A light directing film includes a structured major surface with a plurality of microstructures extending along a first direction. Each microstructure has a first region and a second region different from the first region, a substantially constant height in the first region and a non-constant maximum height in the second region greater than the substantially constant height in the first region, and a same lateral cross sectional shape in the first region and the second region.

Light directing film and method for making the same

A light directing film and an optical system incorporating same are disclosed. The light directing film includes a first major surface and a microstructured second major surface. The microstructured second major surface has at least two periodic microstructured patterns. The first periodic pattern is arranged along a first direction. The second periodic pattern is arranged along a second direction different from the first direction.

Light directing film

Growing community of inventors

Saint Paul, MN, United States of America

Todd M Johnson