Lasersko graviranje transmisijskih računalno generiranih holograma na površinu polikarbonatnih materijala

master's thesis

• Author: Marija Puzjak
• Mentor: Damir Modrić (mentor)
• Committee member: Katarina Itrić Ivanda (predsjednik povjerenstva)
• Committee member: Damir Modrić (član povjerenstva)
• Committee member: Ivan Budimir (član povjerenstva)
• Granter: University of Zagreb; Faculty of Graphic Arts; Zagreb
• Defense date and country: 2023-09-25, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Graphic Technology

Abstract

Hologram je trodimenzionalna slika kreirana interferencijom koherentnih svjetlosnih
zraka. Tako dobiveni interferencijski uzorak zapisan na fotoosjetljivom materijalu
sadržava sve informacije o rasporedu, jakosti, smjerovima i fazama svjetlosnih valova
reflektiranih od predmeta u trenutku snimanja. Zabilježene interferencijske pruge su
optička rešetka kroz koju se svjetlost otklanja od početnoga smjera i konstruktivnom
interferencijom u nekim smjerovima pojačava te tako reproducira sliku visoke rezolucije
u trima dimenzijama.
U postupku izrade holograma klasičnu je holografiju zamijenila računalno generirana
holografija u kojoj se numeričkim metodama simuliraju fizikalne osnove holografije.
Zbog specifičnosti zapisa informacije i zahtjevnog postupka izrade, hologrami su glavnu
primjenu pronašli u zaštitnom tisku. Hologrami se za tu namjenu izrađuju na nekoliko
načina (CtF ispis, lasersko graviranje, embosiranje, ...).
U ovom radu prikazan je zapis transmisijskih računalno generiranih holograma na
polikarbonat s pomoću laserskog graviranja. Za potrebe ovog rada upotrijebio se fiber
laser, valne duljine 1064 nm, polikarbonat kao materijal na koji je zapisan hologram. Za
konačan rezultat izrađen je primjer dokumenta koji sadrži nekoliko transmisijskih
računalno generiranih holograma. Kako bi se ispitale pretpostavke kvalitetnog ispisa
izrađen je set uzoraka koji su se upotrijebili za kalibraciju konačnog postupka.

Abstract (english)

A hologram is a three-dimensional image created by the interference of coherent light
beams. The resulting interference pattern recorded on the photosensitive material contains
all the information about the arrangement, intensity, directions and phases of the light
waves reflected from the objects at the time of recording. The recorded interference
fringes are an optical grating through which light is deflected from the initial direction
and amplified in some directions by constructive interference, thus reproducing a highresolution image in three dimensions.
In the process of making holograms, classical holography was replaced by computer
generated holography, in which numerical methods simulate the physical basis of
holography. Due to the specificity of information recording and the demanding
production process, holograms have found their main application in protective printing.
Holograms for this purpose are made in several ways (CtF printing, laser engraving,
embossing, ...).
In this work, the recording of transmission computer generated holograms on
polycarbonate is demonstrated using laser engraving. For the purposes of this work, a
fiber laser with a wavelength of 1064 nm and polycarbonate was used as the material on
which the hologram was written. For the final result, an example document was created
that contain several transmission computer generated holograms. In order to test the
assumptions of quality printing, a set of samples was created that were used to calibrate
the final process.

• Keywords: holografija; računalno generirani hologram; lasersko graviranje; polikarbonat
• Keywords (english): holography; computer generated holograms; laser engraving; polycarbonate
• Language: croatian
• URN:NBN: urn:nbn:hr:216:167698
• Study programme: Title: Graphic technology; specializations in: Graphic technology, Design of graphic products; Course: Graphic technology; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije (sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-10-02 09:22:35