Viavi Solutions Inc.

Jds Uniphase Corporation

Flex Products, Inc.

Optical Coating Laboratory, Inc.

Other

Paul G. Coombs

Phillips Roger W.

Roger W. Phillips

Lauren R. Wendt

Paul G Coombs

Vladimir P Raksha

Charles Thomas Markantes

Roger Winston Phillips

Alberto Argoitia

Cornelis Jan Delst

Curtis Ross Hruska

Paul Thomas Kohlmann

Laurence Holden

John Hynes

Jay M Holman

Benjamin F Catching

Dishuan Chu

Paula Smith

Neil Teitelbaum

Charlotte R LeGallee

Matthew R Witzman

Michael Ray Nofi

Richard Alan Bradley, Jr

Thomas A Mayer

Shari Powell Fisher

Donald M Friedrich

Robert B Sargent

Ken D Cardell

Marc K Von Gunten

Marc A Kamerling

Lauren R Wendt

Wilfred C Kittler, Jr

David De La Fuente

Vernon C Spellman

Wayne L Gossett

Russell E DeLong

Jaroslaw Zieba

Patrick K Higgins

Christopher W Lantman

David W Todd

Richard A Bradley

Stacey A Yamanaka

John D Sonderman

Scott F Rowlands

Michael R Nofi

Vladmir P Raksha

Charlotte R LaGallee

Steven A Silver

Roger W Philips

Dave Williams

Michael L Sanders

Shaun McCaffery

Bruce Matson

John Reinecke

Phillips Roger W

Charles T Markantes

Jr Kittler Wilfred C

Benjamin F Benjamin F Catching

Dishan Chu

Raksha Vladimir P P

Charles Tom Markantes

Dishuan Sean Chu

In a printed article, pigment flakes are magnetically aligned so as to form curved patterns in a plurality of cross-sections normal a continuous imaginary line, wherein radii of the curved patterns increase along the imaginary line from the first point to the second point. When light is incident upon the aligned pigment flakes from a light source, light reflected from the aligned pattern forms a bright image which appears to gradually change its shape and move from one side of the continuous imaginary line to another side of the continuous imaginary line when the substrate is tilted with respect to the light source.

Article with curved patterns formed of aligned pigment flakes

A security device is disclosed that has an image formed upon a substrate. The image has a first printed region and a second different printed region both printed with a same ink formulation of field alignable flakes. At least one of the printed regions has optically variable effects. One of the first and second printed regions at least partially surrounds the other. The second printed region is formed of thin parallel lines and the first printed region has substantially wider lines than are printed in the second printed region. The area density of the ink in a line in the first group of wider lines is greater than the area density of a line in the second group of narrower lines. A surprising effect of this image is that particles or flakes in the ink are field aligned so as to produce a visible kinematic dynamic effect visible in the first region and not visible in the second region when the image is tilted or rotated.

Security device formed by printing with special effect inks

An optical assembly is disclosed including two laterally variable bandpass optical filters stacked at a fixed distance from each other, so that the upstream filter functions as a spatial filter for the downstream filter. The lateral displacement may cause a suppression of the Oblique beam when transmission passbands at impinging locations of the oblique beam onto the upstream and downstream filters do not overlap. A photodetector array may be disposed downstream of the downstream filter. The optical assembly may be coupled via a variety of optical conduits or optical fibers for spectroscopic measurements of a flowing sample.

Optical filter and spectrometer

An optical device comprising a structured substrate; a reflective layer on the structured substrate; and a coating with magnetic flakes on the reflective layer is disclosed. A method of making and using an optical device is also disclosed.

Optical device with magnetic flakes and structured substrate

The present invention provides a magnetic multilayer pigment flake and a magnetic coating composition that are relatively safe for human health and the environment. The pigment flake includes one or more magnetic layers of a magnetic alloy and one or more dielectric layers of a dielectric material. The magnetic alloy is an iron-chromium alloy or an iron-chromium-aluminum alloy, having a substantially nickel-free composition. The coating composition includes a plurality of the pigment flakes disposed in a binder medium.

Magnetic multilayer pigment flake and coating composition

The disclosure relates to an optical security feature that is based on a single axis alignment of mirrors or facets in a structured surface that forms a micro mirror array. In an aspect, a device is described that includes a reflecting structure on a first layer, where the reflecting structure has a top surface with multiple embossed facets arranged in a spatial orientation that produces a flat ring optical effect upon incidence of light. In another aspect, a method for making the device is described that provides a reflecting layer and produces the reflecting structure on the reflecting layer with multiple facets arranged in the spatial orientation to produce the flat ring optical effect. In yet another aspect, an apparatus for making the device is described that includes a pressing device and a stamping device to transfer a pattern of the reflecting structure to a reflecting material.

Security feature based on a single axis alignment of mirrors in a structured surface that forms a micro mirror array

An optical assembly is disclosed including two laterally variable bandpass optical filters stacked at a fixed distance from each other, so that the upstream filter functions as a spatial filter for the downstream filter. The lateral displacement may cause a suppression of the oblique beam when transmission passbands at impinging locations of the oblique beam onto the upstream and downstream filters do not overlap. A photodetector array may be disposed downstream of the downstream filter. The optical assembly may be coupled via a variety of optical conduits or optical fibers for spectroscopic measurements of a flowing sample.

The invention relates to a method of aligning magnetic flakes, which includes: coating a substrate with a carrier having the flakes dispersed therein, moving the substrate in a magnetic field so as to align the flakes along force lines of the magnetic field in the absence of an effect from a solidifying means, and at least partially solidifying the carrier using a solidifying means while further moving the substrate in the magnetic field so as to secure the magnetic flakes in the carrier while the magnetic field maintains alignment of the magnetic flakes. An apparatus is provided, which has a belt for moving a substrate along a magnet assembly for aligning magnetic flakes. The apparatus also includes a solidifying means, such as a UV- or e-beam source, and a cover above a portion of the magnet assembly for protecting the flakes from the effect of the solidifying means.

Method and apparatus for orienting magnetic flakes

An article includes a substrate and a graphical component forming an image and an optical component which includes magnetic pigment flakes aligned so as to form a frame pattern which surrounds the image. When light is incident upon the pigment flakes from a light source, light reflected from the frame pattern forms a dynamic frame which surrounds the image and appears to move as the substrate is tilted with respect to the light source. The image appears to be stationary when the dynamic frame appears to move.

Article with dynamic frame formed with aligned pigment flakes

Growing community of inventors

Santa Rosa, CA, United States of America

Paul G Coombs