公开(公告)号：US11298918B2

公开(公告)日：2022-04-12

申请号：US16335189

申请日：2017-09-25

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Timothy J. Hebrink ,  Mark B. O'Neill ,  Stephen J. Kuncio ,  Edward J. Kivel ,  Laurence R. Gilbert ,  Tracey D. Sorensen ,  Timothy J. Nevitt ,  Stephen A. Johnson

IPC: B32B17/06 ,  G02B5/08 ,  G02B5/28

Abstract: Multilayer infrared (IR) reflecting films are provided. An optical repeating unit of the film include a plurality of optical polymeric layers arranged to reflect light by constructive and destructive interference. Optical layer A is a high refractive index polymeric layer, and optical layer B is a low refractive index isotropic polymeric layer containing fluoropolymers. The film has an average reflectance of about 50% to about 100% in a near infrared wavelength range of about 850 nm to about 1850 nm, and an average transmission of about 70% to about 90% in a visible light range.