Temat: chromaticity - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Chromaticity measurement of airport navigation lighting using integrated colour sensor
Autorzy:: Suder, Jakub
Podbucki, Kacper
Marciniak, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/27315691.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:: colour sensor
chromaticity
CIE1931
aeronautical ground lights
airport navigation lighting
EASA
Opis:: The paper presents an analysis of using a TCS3430 light colour sensor to verify the chromaticity of navigation lighting installed at airports. These measurements can help determine the correct operation of the tested lamp using of specialised measuring devices. The emitted light colour is critical for pilots during flight operations such as take-off, landing and taxiing, especially in low visibility conditions. Chromaticity standards (in CIE1931 colour space) are specified in the relevant regulations of the European Union Aviation Safety Agency (EASA) and the International Civil Aviation Organisation (ICAO), and require regular inspection of each light point (both in-pavement and elevated lamps). Tests were carried out for various types of aviation navigation lighting lamps. The stability of measurements and possibilities of visualization on the chromaticity chart were assessed. The article also presents software that allows for quick verification of the operation of a given lamp, intended for airport maintenance services.
Źródło:: Opto-Electronics Review; 2023, 31, 4; art. no. e147040
1230-3402
Pojawia się w:: Opto-Electronics Review
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Coefficients for Assessing the Visibility of Materials Used in Anti-Smog Face Masks
Autorzy:: Brochocka, Agnieszka
Owczarek, Grzegorz
Szkudlarek, Joanna
Powiązania:: https://bibliotekanauki.pl/articles/2171993.pdf
Data publikacji:: 2022
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:: spunbond nonwoven
phosphorescent material
face half-mask
coefficient of reflectance
chromaticity coordinates
luminance
Opis:: The application of phosphorescence for the modification of face mask materials is motivated by the need to appreciably increase their visibility while using graphical elements with a relatively small area. Phosphorescent dyes absorb part of the visible spectrum while emitting radiation at wavelengths that are longer than the absorbed ones. Thus, a phosphorescent substance can emit light even if it is not being illuminated at a given time (but was before). This paper describes studies of the optical properties based on parameters such as the reflectance coefficient, chromaticity coordinates, as well as luminance measured from digital images for two models of smog-protective face half-masks differing in terms of their inner layer with filtration properties and outer printed layer. The external surface of one mask type is printed with a phosphorescent solid star pattern, while the other with a phosphorescent open star pattern. The influence of the inner filter layer was assessed in correlation with the colour of the outer layer and the type of printing. Moreover, the phenomenon of phosphorescence was identified. The study resulted in developing a material with properties providing better visibility under defined use conditions.
Źródło:: Fibres & Textiles in Eastern Europe; 2022, 3 (151); 46--56
1230-3666
2300-7354
Pojawia się w:: Fibres & Textiles in Eastern Europe
Dostawca treści:: Biblioteka Nauki

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