skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Computer generated holographic microtags

Abstract

A microlithographic tag comprising an array of individual computer generated holographic patches having feature sizes between 250 and 75 nanometers. The tag is a composite hologram made up of the individual holographic patches and contains identifying information when read out with a laser of the proper wavelength and at the proper angles of probing and reading. The patches are fabricated in a steep angle Littrow readout geometry to maximize returns in the -1 diffracted order. The tags are useful as anti-counterfeiting markers because of the extreme difficulty in reproducing them.

Inventors:
 [1]
  1. Albuquerque, NM
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
871422
Patent Number(s):
5729365
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
G - PHYSICS G03 - PHOTOGRAPHY G03H - HOLOGRAPHIC PROCESSES OR APPARATUS
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
computer; generated; holographic; microtags; microlithographic; tag; comprising; array; individual; patches; feature; sizes; 250; 75; nanometers; composite; hologram; contains; identifying; information; laser; proper; wavelength; angles; probing; reading; fabricated; steep; angle; littrow; readout; geometry; maximize; returns; -1; diffracted; tags; useful; anti-counterfeiting; markers; extreme; difficulty; reproducing; computer generated; feature sizes; generated holographic; /359/235/283/

Citation Formats

Sweatt, William C. Computer generated holographic microtags. United States: N. p., 1998. Web.
Sweatt, William C. Computer generated holographic microtags. United States.
Sweatt, William C. Thu . "Computer generated holographic microtags". United States. https://www.osti.gov/servlets/purl/871422.
@article{osti_871422,
title = {Computer generated holographic microtags},
author = {Sweatt, William C},
abstractNote = {A microlithographic tag comprising an array of individual computer generated holographic patches having feature sizes between 250 and 75 nanometers. The tag is a composite hologram made up of the individual holographic patches and contains identifying information when read out with a laser of the proper wavelength and at the proper angles of probing and reading. The patches are fabricated in a steep angle Littrow readout geometry to maximize returns in the -1 diffracted order. The tags are useful as anti-counterfeiting markers because of the extreme difficulty in reproducing them.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

Patent:

Save / Share: