Back to results
US 12,761,412 B2Granted
Dynamic reflected color film with low optical caliper sensitivity
Assignee3M Innovative Properties Company
InventorsTimothy J. Nevitt, Gilles J. Benoit, Matthew B. Johnson
Life of this patent
Estimating the term…
Abstract
An article including a reflector with a reflectance band that is substantially constant as a function of an incidence angle; a polymeric multilayer film packet including a front surface partial reflector with a reflectivity that increases with an increasing incidence angle away from the normal; and a wavelength-selective absorber with a transmission band that at least partially coincides with the reflectance band of the reflector.
Claims4
An article comprising:
- a reflector having an average reflectivity in a wavelength range from 400 nm to 700 nm that is substantially constant as a function of an incidence angle for both p-polarized and s-polarized incident light for all planes of incidence;
- and
- a partial reflector having an average reflectivity in the wavelength range from 400 nm to 700 nm that for increasing incidence angles away from a normal, increases for an s-polarized incident light and decreases for a p-incident light, the partial reflector and the reflector being disposed in a same film stack.
An article comprising:
- a reflector having an average reflectivity in a wavelength range from 400 nm to 700 nm that is substantially constant as a function of an incidence angle for both p-polarized and s-polarized incident light for all planes of incidence;
- and
- a partial reflector having an average reflectivity in the wavelength range from 400 nm to 700 nm that for increasing incidence angles away from a normal, increases for an s-polarized incident light and decreases for a p-incident light, the partial reflector and the reflector being substantially parallel to one another.
Dependencies are inferred from the claim text.