Apsorpcijski spektar ultravioletne i infracrvene grafike za blizance boja sa zadanim Z vrijednostima

Damir Modrić, Ivana Žiljak Stanimirović, Branka Morić Kolarić

Sažetak

Razvoj ultravioletne i infracrvene grafike je motivacija za novi pristup dizajnu, učenju i projektiranju grafike u proširenom UV-V-IR spektru od 250 do 1000 nm u zaštitnim tiskarskih tehnikama. Skrivena informacija nastala programiranom Inraredesign grafikom i tiskom sa zadanim UV-V-IR bojilima, može se implementirati na sve grafičke proizvode, na dokumente i vrijednosnice, na kartice, ambalažu i na dizajn tekstila i uniformi. UV-V-IR grafiku otkrivamo skeniranjem s barijernim filterima pod valnim duljinama od ultravioletnog do bliskog infracrvenog spektra, u širem rasponu od onih u vidljivom dijelu spektra. Ton boje, koji opažamo u vidljivom dijelu spektra, može se postići na mnogo načina. Informacija o strukturi i nastanku boje duboko je skrivena. Različiti otisci, s različito nastalim bojama mogu za naše oči dati isti doživljaj tona boje, istu grafiku. Svaka komponenta boje od koje je ona nastala, daje izdvojen odziv u ultravioletnom i infracrvenom dijelu spektra. Opažanje dvostrukih informacija u različitim dijelovima spektra svodi se na jednoznačnu realizaciju „blizanaca boja UV-V-IR“. Analiza apsorpcijskog spektra pokazuje da u području od 400 do 700 nm kreiramo sliku koju vidimo u vidljivom dijelu spektra, a u području od 850 do 950 nm sliku koju opažamo u infracrvenom dijelu spektra. S blokiranjem valnih duljina na 365 nm dolazimo do UV slike. Apsorpcijski spektri u vidljivom dijelu spektra su skoro potpuno identični. Posljedica toga je da oba blizanca percipiramo kao „istu boju“. Analiza apsorpcijskog spektra ide u smjeru pokušaja davanja plauzibilne fizikalne slike generiranja pojedinog blizanca.

Ključne riječi: UV-V-IR dizajn, Infraredesign, generiranje “blizanaca” boja, interakcija svjetlosti s podlogom, apsorpcijski spektar

The absorption spectrum of ultraviolet and infrared graphics for twins color with default Z values

Damir Modrić, Ivana Žiljak Stanimirović, Branka Morić Kolarić

Abstract

The development of ultraviolet and infrared graphics is motivation for a new approach to design, learning and designing graphics in the extended UV-V-IR spectrum from 250 to 1000 nm in security printing techniques. Hidden information created by the programmed Infraredesign graphics and prints with the calculated UV-V-IR inks, can be implemented on all graphic products, documents and securities, at cash cards, packaging and in design of textiles and uniforms. UV-VIS-IR graphics reveals itself by scanning with the cut-off filters which select wavelengths of the desired range from ultraviolet to near-infrared regions of the spectrum, in a wider range than in the visible spectrum. Color tone, which we observe in the visible part of the spectrum, can be achieved in many ways, wherein the information on the structure and on the occurrence of color is deeply hidden. Various prints, with the differently generated colors, can give us the same visual experience of color tone with the matching graphics. Each component, from which the referred color was created, has a distinctive response in the ultraviolet and infrared spectrum. Observation of the double information in different parts of the spectrum is reduced to the unambiguous implementation of the „UV-V-IR color twins”. Analysis of absorption spectra shows that in the range from 400 to 700 nm an image is created, which we see in the visible spectrum, while in the area of 850-950 nm the observed image is apparent in the infrared spectrum. UV picture emerges when we register only wavelengths shorter than 365 nm. Absorption spectra in the visible spectrum are almost completely identical. The consequence is that both twins we perceive as the “same color”. The intention of absorption spectrum analysis is an attempt to provide plausible physical image of generating particular twins.

Keywords: UV-V-IR design, Infraredesign, generating color “twins”, interaction of light with the substrate, absorption spectrum


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