Abstract

We show the projection of color and covert images in multiple planes using a multilevel diffractive-optical element illuminated by the flashlight of a mobile phone. Such devices could be useful for in secure documents.

© 2019 The Author(s)

PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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