Am image presentation system employing microstructured icon elements to form an image.
In one form a synthetic optical image system is provided that includes an array of focusing …

A synthetic micro-optic system and security device is disclosed including an in-plane image
formed of an array or pattern of image icons and an array of focusing elements, the system …

(57) ABSTRACT A film material utilizing a regular two-dimensional array of non-cylindrical
lenses to enlarge micro-images, called icons, to form a synthetically magnified image …

The present invention provides a camera and camera hous ing to improve reading digital
watermarks. Another aspect of the invention is a method of authenticating identification …

The present invention relates to a security element for pro tecting valuable articles, having a
first and a second authen ticating feature. The first authenticating feature comprises a first …

An image presentation system employing microstructured icon elements to form an image. In
one form a synthetic optical image system is provided that includes an array of focusing …

An optical device projecting one or more synthetically magnified images that has been laser
marked with one or more static two dimensional (2D) images is provided. The static 2D …

A tamper indicating optical security device that operates to produce one or more synthetic
images is provided. Any attempt to detach (eg, forcibly remove) this device from an …

5,442.482 A 8, 1995 Johnson et al. WO WO93/24333 A1 12, 1993 5,503,902 A 4, 1996
Steenblik et al. WO WO 97/47478 A1 12/1997 5,712,731 A* 1/1998 Drinkwater et al …

3,122,853 3.241, 429 3.264, 164 3,312,006 3.357, 772 3,463,581 3,609,035 3,643,361
3,704,068 3,811,213 4,073,650 4,185,191 4.417, 784 4,498,736 4,507,349 4,634.220 …