Analiza 3D-tiskanih optičnih elementov

Štrancar, Matej (author), Agrež, Vid (mentor), Petkovšek, Rok (comentor)

V zaključni nalogi je obravnavana uporabnost 3D-tiskanih modelov iz fotopolimerne smole za optične namene. Eksperimentalno delo je bilo izvedeno na modelih, izdelanih s tiskalnikom MicroSLA Micro 2 iz smole MicroSLA UHR resin, pri različnih debelinah plasti. Za opazovanje prehoda svetlobe je bila uporabljena postavitev z laserjem valovne dolžine 400 nm in kamero na optični lupi. Analizirani so bili vpliv debeline plasti, glad-kost površine, odboj, lom, sipanje ter fluorescenca materiala. Rezultati so pokazali, da manjša debelina plasti izboljša transparentnost in zmanjša vpliv površinske narebrenosti. Površinski premaz je pri modelih z večjo debelino plasti zmanjšal optične izgube, pri naj-tanjših plasteh pa je bil njegov vpliv manj izrazit. V notranjosti materiala so bile opažene nehomogenosti, sipanje in izrazita fluorescenca, ki zmanjšujejo intenziteto glavnega žar-ka. Ugotovljeno je bilo, da uporabljena smola kljub izboljšavam površinske kakovosti ni primerna za zahtevnejše optične aplikacije.

• Language: Slovenian
• Keywords: 3D-tiskanje, fotopolimerne smole, optični izdelki, transparentnost, sipanje svetlobe, fluorescenca
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [M. Štrancar]
• Year: 2026
• Number of pages: XII, 35 f.
• PID: 20.500.12556/RUL-186176
• UDC: 004.925.84:678.7(043.2)
• COBISS.SI-ID: 289275395
• Publication date in RUL: 28.08.2026

Secondary language

• Language: English
• Title: Analysis of 3D-printed optical elements

Abstract

This thesis examines the suitability of 3D-printed photopolymer resin models for optical applications. The experimental work was carried out on models produced with a Mic-roSLA Micro 2 printer using MicroSLA UHR resin and different layer thicknesses. Light transmission was observed using an experimental setup with a 400 nm laser and a camera mounted on an optical microscope. The influence of layer thickness, surface smoothness, reflection, refraction, scattering, and material fluorescence was analysed. The results showed that a smaller layer thickness improves transparency and reduces the effect of sur-face ridges. A surface coating reduced optical losses in models with larger layer thicknes-ses, while its effect was less pronounced for the thinnest layers. Internal inhomogeneities, scattering, and strong fluorescence were observed in the material, reducing the intensity of the main beam. It was concluded that, despite improvements in surface quality, the in-vestigated resin is not suitable for more demanding optical applications.

• Keywords: 3D printing, photopolymer resin, optical products, transparency, light scattering, fluorescence