Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Metameric interference security image structures

Not Accessible

Your library or personal account may give you access

Abstract

We study innovative interference security image structures based on metamerism. We have designed, fabricated, and evaluated different structures that can be used in transmission or in reflection. These metameric structures are either a combination of two different interference filters or of an interference filter and a noniridescent colored material. In the latter case, by closely matching the spectra, the sensitivity of the device to changes in light sources and observers is minimized. Because of the intrinsic color shift of interference filters, one can create a hidden image that appears at a specific observation angle. The presence of the hidden image, as well as in some cases of the noniridescent material, which serves as a color reference, increases the complexity of such devices while facilitating the user’s authentication process as well as automatized detection by using a laser at a specific angle. We present the design approach, analyze the filters’ sensitivity to deposition errors, and evaluate the performance of prototype devices prepared by dual ion beam sputtering.

© 2008 Optical Society of America

Full Article  |  PDF Article
More Like This
Active metameric security devices using an electrochromic material

Bill Baloukas, Jean-Michel Lamarre, and Ludvik Martinu
Appl. Opt. 50(9) C41-C49 (2011)

Optical and tribomechanical stability of optically variable interference security devices prepared by dual ion beam sputtering

Eda Çetinörgü-Goldenberg, Bill Baloukas, Oleg Zabeida, Jolanta Klemberg-Sapieha, and Ludvik Martinu
Appl. Opt. 50(19) 3351-3359 (2011)

WO3/SiO2 composite optical films for the fabrication of electrochromic interference filters

Bill Baloukas and Ludvik Martinu
Appl. Opt. 51(16) 3346-3356 (2012)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved