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Proceedings Paper

One-step 3D full-colour and achromatic transmission holograms digitally printed using a 440nm pulsed laser for embossed applications
Author(s): Stanislovas Zacharovas; Andrej Nikolskij; Ramunas Bakanas; David Brotherton-Ratcliffe
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Paper Abstract

The Direct Write Digital Holography (DWDH) technique has been used to print master-original holograms for embossed applications using a 440nm pulsed laser. Holograms were recorded on both Silver Halide photo-plates and Shipley photoresist photo-plates. Shipley photoresist consistently exhibited a sensitivity to pulsed radiation several times better than that observed on exposure to CW radiation. In addition, image quality of the recorded holograms using pulsed radiation appeared very similar to that obtainable with CW exposure. The clear implication is that pulsed lasers emitting at 440nm can replace the CW HeCd lasers currently used for the origination of embossed holograms. Master-original holograms recorded with the DWDH technique are able to record deep 3D imagery. The origination technique described allows the production of master-original holograms with achromatic or full colour images. In addition the DWDH technique allows one to combine achromatic and full colour images on one hologram. As a proof of concept, embossing matrix shims were produced from our master-original holograms and embossed holograms were stamped.

Paper Details

Date Published: 1 March 2013
PDF: 7 pages
Proc. SPIE 8644, Practical Holography XXVII: Materials and Applications, 864407 (1 March 2013); doi: 10.1117/12.2008469
Show Author Affiliations
Stanislovas Zacharovas, Geola Digital uab (Lithuania)
Andrej Nikolskij, Geola Digital uab (Lithuania)
Ramunas Bakanas, Geola Digital uab (Lithuania)
Kaunas Univ. of Technology (Lithuania)
David Brotherton-Ratcliffe, Geola Technologies Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 8644:
Practical Holography XXVII: Materials and Applications
Hans I. Bjelkhagen; V. Michael Bove, Editor(s)

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