公开(公告)号：US10031269B2

公开(公告)日：2018-07-24

申请号：US15283917

申请日：2016-10-03

申请人： VIAVI SOLUTIONS INC.

发明人： Charles T. Markantes ,  Cornelis Jan Delst ,  Vladimir P. Raksha ,  David De La Fuente ,  Paul G. Coombs

IPC分类号： C01B21/064 ,  G02B5/28 ,  G02B5/00

CPC分类号： G02B5/288 ,  G02B5/003 ,  G02B5/285

摘要： In a plurality of asymmetric color-shifting flakes, each flake has an asymmetric magnetic core with a magnetic layer visible on the first side of the core and a non-magnetic reflector layer on the magnetic layer, visible on the second side of the core. The flake has a spacer layer and an absorber layer on the first side of the core, and also a spacer layer and an absorber layer on the second side of the core, for providing color shifting effects. The material of the magnetic layer is different from the material of the reflector layer, and may be more stable when exposed to a chemical. When a coating with the asymmetric color-shifting flakes is exposed to the chemical, it may have better optical performance than a coating with symmetric color-shifting flakes.