- Patent Title: Composition including a color shifting pigment and a color filter
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Application No.: US18311790Application Date: 2023-05-03
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Publication No.: US11945972B2Publication Date: 2024-04-02
- Inventor: Cornelis Jan Delst , Paul Thomas Kohlmann
- Applicant: VIAVI SOLUTIONS INC.
- Applicant Address: US AZ Chandler
- Assignee: VIAVI SOLUTIONS INC.
- Current Assignee: VIAVI SOLUTIONS INC.
- Current Assignee Address: US AZ Chandler
- Agency: Mannava & Kang, P.C.
- Main IPC: C09D5/29
- IPC: C09D5/29 ; B42D25/369 ; B42D25/373 ; B42D25/378

Abstract:
A composition including a first color shifting pigment having a first color shift that extends from a starting color at normal through a plurality of colors as a viewing angle is increased to a final color, wherein the first color shift rotates counterclockwise relative to, and about, an origin of the L*a*b* color space; and a color filter that transmits a portion of the first color shift of the first color shifting pigment and absorbs a remainder of the first color shift of the first color shifting pigment; wherein the composition has a second color shift different from the first color shift; and wherein the second color shift has a first portion that rotates counterclockwise relative to the origin and a second portion that rotates clockwise relative to the origin is disclosed. A security device including the composition is included. A method of making the composition and a method of authenticating the security device are also disclosed.
Public/Granted literature
- US20230272230A1 COMPOSITION INCLUDING A COLOR SHIFTING PIGMENT AND A COLOR FILTER Public/Granted day:2023-08-31
Information query
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