US 12,298,470 B2
Thin film interference pigments with a coating of nanoparticles
Alberto Argoitia, Santa Rosa, CA (US); John Edward Book, Santa Rosa, CA (US); and Jaroslaw Zieba, Santa Rosa, CA (US)
Assigned to VIAVI SOLUTIONS INC., Chandler, AZ (US)
Filed by VIAVI SOLUTIONS INC., San Jose, CA (US)
Filed on Mar. 3, 2020, as Appl. No. 16/808,188.
Claims priority of provisional application 62/966,391, filed on Jan. 27, 2020.
Claims priority of provisional application 62/813,483, filed on Mar. 4, 2019.
Prior Publication US 2020/0284947 A1, Sep. 10, 2020
Int. Cl. G02B 1/10 (2015.01); C09C 1/00 (2006.01); G02B 5/22 (2006.01); G02B 5/28 (2006.01); B82Y 20/00 (2011.01)
CPC G02B 1/10 (2013.01) [C09C 1/0015 (2013.01); G02B 5/22 (2013.01); G02B 5/28 (2013.01); B82Y 20/00 (2013.01); C09C 2200/306 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An article, comprising:
a thin film interference pigment comprising a reflective material chosen from a metal or metal alloy, a dielectric layer, and an absorber layer; and
a coating including a selectively absorbing nanoparticle on the thin film interference pigment, wherein the coating including the selectively absorbing nanoparticle is discontinuous;
wherein the article is a coated thin film interference pigment;
wherein the selectively absorbing nanoparticle is not a metallic nanoparticle; and
wherein the selectively absorbing nanoparticle is a nanoparticle chosen from a dye, a nanoparticle consisting of a metal oxide, a metal carbide, a nanoparticle consisting of a metal sulfide, and combinations thereof.