Patent ID: 11940689
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 19:
20. A light control film comprising:
a light input surface and a light output surface opposite the light input surface;
alternating transmissive regions and absorptive regions disposed between the light input surface and the light output surface, wherein the absorptive regions comprise a core comprising light absorbing particles sandwiched between cladding layers comprising light absorbing particles and non-light absorbing diluent, and wherein the cores have an aspect ratio of at least 20,
wherein the core comprises 30 wt. % to 100 wt. % of a light absorbing material and the cladding layers comprise 0.5 wt. % to 50 wt. % of the light absorbing material.