Patent ID: 11880059
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G | IPC F  G

Claim 8:
9. An optically diffuse reflective film assembly, comprising:
a specularly reflective film, such that for a substantially normally incident light and for at least one visible wavelength in a wavelength range extending from about 400 nm to about 800 nm, the reflective film specularly reflects at least 95% of the incident light for each of orthogonal first and second polarization states; and
an optically diffusive film bonded to the specularly reflective film in a bonding pattern of a plurality of spaced apart bonding areas with a total bonding area of less than about 20%, wherein the optically diffusive film comprises a plurality of fibers, wherein at least 20% of the fibers have an average diameter less than about 5 microns, and at least 50% of the fibers have an average diameter greater than about 8 microns.