Abstract: A light control material for displaying a color image. The light control material includes a material body including a plurality of microstructures. The microstructures are designed to produce an additive color perception of one or more colors and designed to reveal an image when the intensity of light reflected from a selected number of the microstructures is modulated. The selected microstructures can be modulated by one or more of modifying, obliterating, obscuring or covering up the selected microstructures. In one embodiment, the microstructures, prior to modulation of the selected number of microstructures, produce a uniform white additive color perception.

Abstract: A light control material for displaying a color image. The light control material includes a material body including a plurality of microstructures. The microstructures are designed to produce an additive color perception of one or more colors and designed to reveal an image when the intensity of light reflected from a selected number of the microstructures is modulated. The selected microstructures can be modulated by one or more of modifying, obliterating, obscuring or covering up the selected microstructures. In one embodiment, the microstructures, prior to modulation of the selected number of microstructures, produce a uniform white additive color perception.

Abstract: A light control material for displaying a color image. The light control material includes a material body including a plurality of microstructures. The microstructures are designed to produce an additive color perception of one or more colors and designed to reveal an image when the intensity of light reflected from a selected number of the microstructures is modulated. The selected microstructures can be modulated by one or more of modifying, obliterating, obscuring or covering up the selected microstructures. In one embodiment, the microstructures, prior to modulation of the selected number of microstructures, produce a uniform white additive color perception.

Abstract: Microstructured taggant particles, their applications and methods of making the same are described. Precisely formed taggant particles can be formed, in the range of 500? and smaller, from either inert polymers or biodegradable materials bearing information indicia, such as through specific shape, size, color, reflectivity, refractive index, surface geometry, imprinting, optical effect or properties, and electromagnetic properties, to uniquely tag, identify or authenticate articles.

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 through the united performance of a multiplicity of individual lens/icon image systems. The synthetic magnification micro-optic system includes one or more optical spacers (5), a micro-image formed of a periodic planar array of a plurality of image icons (4) having an axis of symmetry about at least one of its planar axes and positioned on or next to the optical spacer (5), and a periodic planar array of image icon focusing elements (1) having an axis of symmetry about at least one of its planar axes, the axis of symmetry being the same planar axis as that of the micro-image planar array (4). A number of distinctive visual effects, such as three-dimensional and motion effects, can be provided by the present system.

Abstract: 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 producing at least two different synthetic images whereby one synthetic image operates to modulate or control the extent of the appearance of another synthetic image. In an exemplary form, the array of image icons forms an in-plane synthetic image, while the interaction of the array of focusing elements with the array of image icons forms a separate synthetically magnified image that serves to control the field of view of the in-plane image and, thus, serves to modulate or control the extent of appearance of the in-plane image. The appearance of the in-plane image, thus, visually appears and disappears, or turn on and off, depending upon the viewing angle of the system.

Abstract: A method for creating a master and for generating an optical waveguide therefrom. The method includes creating a waveguide master having the geometrical form of at least one optical element formed therein; and generating an embossed optical waveguide from the master, the embossed optical waveguide being a negative of the master, the embossed optical waveguide having an optical element formed therein which corresponds to and is a negative of the geometrical form of the optical element formed in the master, the embossed optical waveguide being formed of a polymer material having a first index of refraction, wherein the optical element is formed in the polymer material and creates a local modification of the refractive index of the polymer material.

Abstract: A light control material is provided for displaying color images having microstructures either on its surface or within the material which reflect a selected color and bandwidth of light in accordance with their physical characteristics. In an exemplary embodiment, the microstructures are stepped structures which reflect a particular color and bandwidth of light in accordance with the height of the steps of the stepped structures. In alternative embodiment, the microstructures are ribbed structures or crystal like structures designed to reflect a selected color and bandwidth of light. In addition, methods of fabricating the material are provided.

Abstract: A method for creating a master and for generating an optical waveguide therefrom. The method includes creating a waveguide master having the geometrical form of at least one optical element formed therein; and generating an embossed optical waveguide from the master, the embossed optical waveguide being a negative of the master, the embossed optical waveguide having an optical element formed therein which corresponds to and is a negative of the geometrical form of the optical element formed in the master, the embossed optical waveguide being formed of a polymer material having a first index of refraction, wherein the optical element is formed in the polymer material and creates a local modification of the refractive index of the polymer material.

Abstract: A light control material is provided for displaying color images having microstructures either on its surface or within the material which reflect a selected color and bandwidth of light in accordance with their physical characteristics. In an exemplary embodiment, the microstructures are stepped structures which reflect a particular color and bandwidth of light in accordance with the height of the steps of the stepped structures. In alternative embodiment, the microstructures are ribbed structures or crystal like structures designed to reflect a selected color and bandwidth of light. In addition, methods of fabricating the material are provided.

Abstract: The present invention provides methods and compositions for authentication of articles and counterfeit deterrence using non-holographic micro-optics and microstructures having a surface relief greater than a few microns. Embodiments of the present invention disclose a range of distinctive optical effects obtained from micro-optic systems incorporating micro lenses, non-imaging collectors, prisms, wave guides, mirrors, gratings, structural interference filters, and photonic crystal microstructures.

Abstract: An optical waveguide for light transmission and a method for creating a master and for generating an optical waveguide therefrom. The waveguide includes a first polymer layer having at least one optical element formed therein, the first polymer layer having an index of refraction of preferably 1.55 or greater, bonded to a second polymer layer, preferably polypropylene, having an index of refraction of preferably 1.50 or less. Since the refractive index of air is approximately 1.0, the first polymer layer is sandwiched between two layers of low refractive index material. The differences between the indices of refraction cause light projected into the polymer layer to be guided in the polymer layer by total internal reflection. Furthermore, once the optical element has been formed in the first polymer layer, it can be used as a master for generating embossments.

Abstract: A light control material is provided for displaying color images having microstructures either on its surface or within the material which reflect a selected color and bandwidth of light in accordance with their physical characteristics. In an exemplary embodiment, the microstructures are stepped structures which reflect a particular color and bandwidth of light in accordance with the height of the steps of the stepped structures. In alternative embodiment, the microstructures are ribbed structures or crystal like structures designed to reflect a selected color and bandwidth of light. In addition, methods of fabricating the material are provided.

Abstract: The present invention provides methods and compositions for authentication of articles and counterfeit deterrence using non-holographic micro-optics and microstructures having a surface relief greater than a few microns. Embodiments of the present invention disclose a range of distinctive optical effects obtained from micro-optic systems incorporating micro lenses, non-imaging collectors, prisms, wave guides, mirrors, gratings, structural interference filters, and photonic crystal microstructures.