2134/33735 Elizabeth A. Raymond Elizabeth A. Raymond An assessment of the information transfer process for embossed holographic elements Loughborough University 2018 untagged Mechanical Engineering not elsewhere classified 2018-07-05 09:16:09 Thesis https://repository.lboro.ac.uk/articles/thesis/An_assessment_of_the_information_transfer_process_for_embossed_holographic_elements/9530810 Embossed holographic elements, such as diffraction gratings, display holograms and optical discs are now firmly established as mass-replicated items. The embossed hologram has evolved from its original form recorded in emulsion on glass plate to present-day images stamped into plastic. The process of obtaining a holographic image in plastic requires several stages of information transfer: first a surface relief image must be recorded into emulsion; next a metal replica must be made; finally the embossed plastic image is produced. A detailed analysis of the information transfer process has been undertaken and is described. [Continues.]