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Authors:
Paulo Zottino
Andre Oliveira
Ronnier Rohrich
Keywords: Light reflection; Robotic design; Optical sensors; Environmental monitoring; Sports arenas.
Abstract:
Environmental monitoring in sports arenas presents challenges related to light interference in optical sensors. This study experimentally investigated the influence of different color spectra and angles of incidence on light reflection in scaled prototypes of a mobile robot. Polylactic Acid (PLA) was used as the base material for constructing six conceptual models. The analyses considered representative colors from the visible light spectrum (380–750 nm), also including conditions with black light (ultraviolet, outside the visible spectrum) and white light (a combination of the entire visible spectrum). The tests were conducted in a controlled environment, with Light Emitting Diode (LED) lighting and light intensity measured by a lux meter, using a reference baseline of 10.76 lux. The light incidence angles ranged from 30◦ to 120◦ . The results showed that the white color exhibited the highest reflectance (MGI: 17.53 lux; +62.92%), with a reflection peak at 30◦ (+150.09%). In contrast, the black color reflected the least amount of light (MGI: 10.46 lux; -2.79%), with the lowest value recorded at 90◦ (-9.94%). Intermediate colors, such as yellow (+27.23%) and orange (+12.92%), showed moderate levels of reflection.
Pages: 15 to 18
Copyright: Copyright (c) IARIA, 2025
Publication date: October 26, 2025
Published in: conference
ISSN: 2308-3514
ISBN: 978-1-68558-305-7
Location: Barcelona, Spain
Dates: from October 26, 2025 to October 30, 2025