Patent Number: 6,297,906

Title: Light fixture containing optical film

Abstract: An optical film is provided which comprises an antireflective layer and a disperse phase of polymeric particles disposed within a continuous birefringent matrix. The film is oriented, typically by stretching, in one or more directions. The size and shape of the disperse phase particles, the volume fraction of the disperse phase, the film thickness, and the amount of orientation are chosen to attain a desired degree of diffuse reflection and total transmission of electromagnetic radiation of a desired wavelength in the resulting film.

Inventors: Allen; Richard C. (Mendota Heights, MN), Nevitt; Timothy J. (Red Wing, MN), Ouderkirk; Andrew J. (Woodbury, MN), Kotz; Arthur L. (Mahtomedi, MN), Carlson; Lockwood W. (St. Paul, MN), Weber; Michael F. (St. Paul, MN), Stover; Carl A. (St. Paul, MN), Majumdar; Biswaroop (St. Paul, MN)

Assignee: 3M Innovative Properties Company

International Classification: G02B 5/30 (20060101); G02B 005/30 ()

Expiration Date: 10/02/2018