Cpfilms Inc.

Coby Lee Hubbard

Steven Allen Barth

Anthony Brian Port

Jaime Antonio Li

James Peyton Enniss

Scott Evan Pickett

Jeremy B Stegall

Charles Nicholas Van Nutt

Rita Maxine Phillips

A low emissivity and EMI shielding transparent composite film typically for use in association with window glazing and comprising a transparent film substrate having on one side thereof an underlayer of abrasion resistant hardcoat material with at least one infrared reflective layer covering the underlayer, typically a metallic layer which may be encased in metal oxide layers, which is then covered with a thin external protective top coat of a cured fluorinated resin.

Low emissivity and EMI shielding window films

Low emissivity and EMI shielding films

Now, according to the present invention, interference filters are provided that incorporate two band pass interference filters into a single composite interference filter. The two filters each have at least one band pass curve that is centered at the same wavelength for light that is incident at a given angle to the filter surface. The band pass curve shifts of the filter components, however, are dissimilar, which results in a decrease of transmitted light as the angle of incidence diverges from the given angle.

Variable transmission composite interference filter

An optically active film composite including a polymeric film substrate coated with a layer of resin having a thickness of less than 6 microns and a pencil hardness of at least 2H, and which includes 30-60% by weight of nanoparticles of ATO or ITO, and nanoparticles of a second metallic compound being an inorganic compound and absorbing light having a wavelength in the range of 700-1100 nm. The composite preferably has a VLT of at least 50% and a %TSER of at least 35% with a weighted UV absorption of less than 1%.

Optically active film composite

Growing community of inventors

Patrick Springs, VA, United States of America

Coby Lee Hubbard