Expanding a color presentation range with true-color dot matrix holograms

Chih-Wen Tu; Yi An Han; Chih-Kung Lee; Jeremy W.J. Wu; April S. T. Peng; Eric H. Z. Liao; Julie T. Lee

doi:10.1117/12.343764

25 March 1999 Expanding a color presentation range with true-color dot matrix holograms

Chih-Wen Tu, Yi An Han, Chih-Kung Lee, Jeremy W.J. Wu, April S. T. Peng, Eric H. Z. Liao, Julie T. Lee

Proceedings Volume 3637, Practical Holography XIII; (1999) https://doi.org/10.1117/12.343764
Event: Electronic Imaging '99, 1999, San Jose, CA, United States

Abstract

The major purpose of this article is to evaluate the various aspects of color composition and color reconstruction by using diffractive technology, i.e. representing color by combining light beams of various spectra generated from shining an incident light beam onto multiple diffractive grating pixels. Using the linearity feature of the CIE chromaticity diagram, it can be shown that the colo representation range encircled by the diffractive technology can cover almost the whole color-visible range that is perceivable by humans. With the advantages of the various characteristics of the CIE diagram, also to be discussed is the newfound freedom of diffractive color-composition technology offered to approach the anti- counterfeit tasks from a brand new perspective. In addition, also detailed is the term metamerism, i.e. the same color that can be composed by using different sets of color spectra, which can be used to facilitate several potential anti- counterfeit approaches. By using a newly developed dot matrix writer, which has a simple and efficient optical configuration to implement on-the-fly grating pitch change, various grating pixels which possess vastly different pitch are used to implement and evaluate the effectiveness of the diffractive color composition technology. Both theoretical analysis and experimental results are presented to examine the potential when a variable pitch dot matrix writer is used.

Citation Download Citation

Chih-Wen Tu, Yi An Han, Chih-Kung Lee, Jeremy W.J. Wu, April S. T. Peng, Eric H. Z. Liao, and Julie T. Lee "Expanding a color presentation range with true-color dot matrix holograms", Proc. SPIE 3637, Practical Holography XIII, (25 March 1999); https://doi.org/10.1117/12.343764

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available