US 12,271,011 B2
Diffractive pigment including an embossed layer
Alberto Argoitia, Santa Rosa, CA (US); Kangning Liang, Santa Rosa, CA (US); Johannes P. Seydel, Petaluma, 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 Sep. 18, 2020, as Appl. No. 17/025,824.
Prior Publication US 2022/0091313 A1, Mar. 24, 2022
Int. Cl. G02B 5/18 (2006.01); B05D 5/06 (2006.01); B29D 11/00 (2006.01); C09C 1/00 (2006.01)
CPC G02B 5/1852 (2013.01) [B29D 11/00769 (2013.01); B29D 11/00865 (2013.01); C09C 1/0024 (2013.01); C09C 1/0048 (2013.01); C09C 2210/40 (2013.01); G02B 2207/101 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of making a diffractive pigment, comprising:
depositing alternating layers of a high refractive index layer and a low refractive index layer to form a stack, each layer of the stack including a dielectric material; and
embossing at least one of the alternating layers to form an embossed surface, wherein a self-planarizing layer of the stack is deposited on the embossed surface using a liquid coating process, the self-planarizing layer having a first surface adjacent the embossed surface and a second surface opposite the embossed surface, the first surface conforming to the embossed surface and the second surface being planar.