Light Světlo 2015

Mezinárodní konference LIGHT SVĚTLO 2015 je v pořadí již 21. konferencí tohoto druhu zaměřená především na problematiku týkající se světelné a osvětlovací techniky v oblasti vědy, výzkumu a praxe. Konference tak vytváří půdu pro výměnu cenných informací, prostor pro diskuze, navazování kontaktů a společenská setkání pracovníků průmyslu, školství a výzkumných pracovišť.
Konferenci v roce 2015 pořádala Česká společnost pro osvětlování a Vysoké učení technické v Brně, Ústav elektroenergetiky Fakulty elektrotechniky a komunikačních technologií ve spolupráci se Slovenskou svetlotechnickou spoločnosťou.

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Recent Submissions

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    The Innovation of the Autonomous System for Indoor Illuminance Measurement
    (Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií, 2015) Drábek, Tomáš; Holub, Jan
    The goal of this report is to show the results we achieved in the field of autonomous indoor illuminance measurement. At the beginning of the paper the state of the art measurement methodology is shown. It is followed by the description of the robotic unit we designed for the purpose of automation of the measurement process. Moreover, the algorithm for measurement process is described in detail. The rest of the paper deals with possible improvements of the robotic platform mainly by adding new sensors and by adding the illuminance vector measurement unit.
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    Cross-cultural variation of color preferences
    (Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií, 2015) Viková, Martina; Vik, Michal; Kania, Eva
    Color plays an important role in life, which affects our perception, shifting meanings of symbols, emphasizes or suppresses communication of pictograms, logos, brands, acts of emotional perception, affects mood. Color is very important for designers; graphics, artists, and it can significantly affect the acceptance of the artwork, merchantability or relationship to the artwork. It is important to know how the color affects the humans. For pictograms there is a tendency to place priority on shape to color. But sometimes the similar pictograms have different meanings when the color is added. This is the same for design, for example great chandelier can cause a calming effect or support activity only with a change of color. Correct use of color helps with orientation in symbols, e.g. pictogram for hot and cold water or designation of toilets is understandable with color. Conversely, wrong use color can confuse. The purpose of this project is, a) relationship of colors and words; which color people associate with certain words; b) influence of culture on word and color association. In this article were tested the habits of Czech, Japanese and Russian nation. Among the concepts evaluated were found to group words, which are characterized by strong emotional attachment to the expressions given by the change in both cultures, similarities respectively.
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    Luminous Intensity Distribution Curve Effect on Luminaire Placement
    (Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií, 2015) Bayer, Rudolf; Brejcha, Michal
    The paper discusses a way to deploy a given number of point light sources in the interior to provide required illuminance levels and uniformity of the working plane by using a genetic algorithm. Furthermore a genetic algorithm has been used to generate a proper luminous intensity distribution curve of multiple luminaires to meet the given criteria for the reference plane of the model room for predefined luminaire positions.
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    Color Appearance of Decorative Coatings
    (Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií, 2015) Vik, Michal; Čejka, Václav; Viková, Martina; Maltseva, Anna
    The article explains the basic concepts of colorimetry and deals with issues of assessment reflectance quality of special plaster coatings in accordance with current methods of measuring spectral reflectance of the International Commission on Illumination (CIE). The results demonstrate that in the case of coatings with high gloss values leads to a linear increase of chroma depending on the lightness values in the case of measuring devices fitted diffusion geometry. Conversely, if the angle-measuring instrument fitted geometry values of specific purity correlated with values of specific brightness. Analysis BRDF, respectively BSRDF function showed that the previously used dichromatic spectral reflectance model must be extended by an additional parameter explaining the correlation between chroma and lightness at the di:8 measurement geometry.
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    Realtime Luminance Analyse
    (Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií, 2015) Sumec, Stanislav; Škoda, Jan; Baxant, Petr; Krbal, Michal
    This paper presents the progress in the development of luminance analyzer LumiDISP. The main innovation is the processing of luminance analysis in real time by using industrial cameras. This new feature allows more efficient process of measurement, because the system allows interactive work. The paper describes the main differences of working with previously used digital camera and demonstrates measurement UGR using the new methodology.