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公开(公告)号：EP3814133A1
公开(公告)日：2021-05-05
申请号：EP19826143.0
申请日：2019-06-27
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公开(公告)号：EP3611028A1
公开(公告)日：2020-02-19
申请号：EP19190942.3
申请日：2019-08-09
申请人： Viavi Solutions Inc.
IPC分类号： B42D25/369 , B42D25/378 , B42D25/41 , B05D3/00 , B05D5/06
摘要： An optical article printed on a substrate may include an organic binder; and a plurality of reflective magnetic platelets provided in the organic binder, wherein the plurality of reflective magnetic platelets are substantially aligned in accordance with at least part of a surface of revolution, and wherein the plurality of reflective magnetic platelets are aligned to cause a first reflective effect of the optical article when the substrate is rotated around a first axis and to cause a second reflective effect of the optical article when the substrate is rotated around a second axis, wherein the first reflective effect is different from the second reflective effect.
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公开(公告)号：EP3561557A1
公开(公告)日：2019-10-30
申请号：EP19179983.2
申请日：2014-11-18
申请人： Viavi Solutions Inc.
摘要： A method of designing a system of interference filters, each for providing a visible color shifting effect when tilted between first and second viewing angles, includes: a hue matching step of identifying a design of a first interference filter including two first metal layers and a first spacer layer therebetween, and a design of a second interference filter including two second metal layers and a second spacer layer therebetween, wherein the first and second filters match in hue at the first viewing angle, and the mismatch in hue at the second angle; and a lightness adjustment step which may include modifying the layer material or the layer thickness of one of the metal layers; wherein a difference in lightness at the first viewing angle between the first and second modified filters is less that a difference in lightness at the first viewing angle between the first and second filters.
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