US 11,912,057 B2
Surface applied micro-optic anti-counterfeit security device
Nancy J. Gettens, Waban, MA (US); Pearl N. Dickerson, New Boston, NH (US); Michael McAllister, Windham, NH (US); and David L. Peters, Amherst, NH (US)
Assigned to Crane & Co., Inc., Dalton, MA (US)
Appl. No. 17/419,212
Filed by CRANE & CO., INC., Dalton, MA (US)
PCT Filed Dec. 27, 2018, PCT No. PCT/US2018/067765
§ 371(c)(1), (2) Date Jun. 28, 2021,
PCT Pub. No. WO2020/139359, PCT Pub. Date Jul. 2, 2020.
Prior Publication US 2022/0072891 A1, Mar. 10, 2022
Int. Cl. B42D 25/00 (2014.01); B42D 25/324 (2014.01); B42D 25/29 (2014.01); B42D 25/378 (2014.01); B42D 25/425 (2014.01); B42D 25/47 (2014.01)
CPC B42D 25/324 (2014.10) [B42D 25/29 (2014.10); B42D 25/378 (2014.10); B42D 25/425 (2014.10); B42D 25/47 (2014.10)] 18 Claims
OG exemplary drawing
 
1. A security device, comprising:
a security film comprising an array of image elements;
an array of focusing elements; and
at least one anti-viscid agent, wherein the anti-viscid agent comprises a surfactant,
wherein the array of focusing elements and the array of image elements are disposed relative to each other such that a synthetic image is projected by the security film when at least a portion of the array of image elements are viewed through at least a portion of the array of focusing elements, and
wherein the anti-viscid agent is provided on an outside surface of the array of focusing elements, and
wherein the anti-viscid agent does not substantially affect a focal length of the array of focusing elements.