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    Wyświetlanie 1-4 z 4
    Tytuł:
    Designing the optical system with a real time lighting effect control
    Autorzy:
    Kubiak, Kamil
    Powiązania:
    https://bibliotekanauki.pl/articles/1818249.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
    Tematy:
    lighting technology
    optical systems design
    luminance calculations
    Opis:
    In the paper, an effective way to design asymmetrical optics for a uniform vertical surface illumination was presented. Assessment of the obtained distribution of luminance (illuminance) on the illuminated surface is done almost at the same time as designing the optical system elements. Advantage of the final application of the presented method in 3D will be independence from the implementation of time-consuming simulations in order to verify the already designed optics. Understanding the method and its application is simple and intuitive. Observing the luminance distribution, created on the illuminated surface almost at the same time as its design, allows to see the effect of adding the next elements of the optical system on this distribution.
    Źródło:
    Opto-Electronics Review; 2020, 28, 2; 99--105
    1230-3402
    Pojawia się w:
    Opto-Electronics Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methods for designing and simulating optical systems for luminaires
    Autorzy:
    Żagan, W.
    Zalewski, S.
    Słomiński, S.
    Kubiak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/200462.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lighting technology
    optical systems design
    luminance modelling
    LID calculations
    Opis:
    This paper presents modern methods for designing optical systems for luminaires in the context of long years of light sources development. It shows that the development of technology for producing increasingly precise optical systems has led to an evolution in the construction of luminaires with increased efficacy and utilizing more efficiently the features of a specific family of light sources. Methods for designing and modelling optical systems with the use of mathematical curves as well as advanced the free-forming method are described. The paper also shows methods for modelling light sources features, especially luminance ones, designed to make precise simulation calculations required in any luminaire design process. Knowledge of luminance distributions of light sources and precise luminance distributions of optical systems for luminaires raises the design process to a very high level, enabling positive modern light source features, such as high luminance and their small dimensions, to be used consciously while minimizing negative ones, such as discomfort glare, caused by luminaires. The paper presents the results of simulation calculations and laboratory measurements for a selected case of luminaire equipped with a discharge lamp of maximum luminance exceeding 30 million cd/m2.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 4; 739-750
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Advanced modelling and luminance analysis of LED optical systems
    Autorzy:
    Słomiński, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/200561.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lighting technology
    luminance distribution
    luminance modelling
    LED
    optical systems design
    Opis:
    Designing, optimizing and analyzing optical systems as part of the implementation process into production of modern luminaires require using advanced simulation and computational methods. The progressive miniaturization of LED (light emitting diode) chips and growth in maximum luminance values, achieving up to 108 cd/m2, require constructing very accurate geometries of reflector and lens systems producing complex luminous intensity distributions while reducing discomfort glare levels. Currently, the design process cannot function without advanced simulation methods. Today’s simulation methods in the lighting technology offer very good results as far as relatively large conventional light sources such as halogen lamps, metal halide lamps and high pressure sodium lamps are concerned. Unfortunately, they often fail in the case of chip-on-board LED light sources whose luminous surface dimensions are increasingly often contained inside a cube of the side length below 1mm. With the high sensitivity of such small chips and lenses with dimensions ranging from a just a few to between 10 and 20 mm, which is presented in this paper, modern luminance distribution measurement methods, luminance modelling and ray tracing methods should be used to minimize any errors arising from incorrectly projecting the design in the final physical model. Also, very importantly, focus should be directed towards reducing a chance of making a mistake while collimating the position of the light source inside the optical system. The paper presents a novel simulation calculation method enriched with an analysis of optical system sensitivity to a light source position. The results of simulation calculations are compared with the results of laboratory measurements for corresponding systems.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 6; 1107-1116
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Floodlighting luminaire for homogeneous illumination
    Autorzy:
    Kubiak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/115666.pdf
    Data publikacji:
    2015
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    lighting technology
    illumination
    floodlighting
    luminaires
    luminaire design
    technologia oświetleniowa
    oświetlenie
    iluminacja
    oprawy oświetleniowe
    projektowanie opraw
    Opis:
    The main subject of the research is a proposition of a luminaire optical system which allows us to illuminate building facades in a more uniform way than it is today in the case when luminaire location is close and asymmetric to the illuminated object. Firstly, the paper introduces and explains the term of floodlighting and presents luminaires that are used in floodlighting. The author casts doubt on floodlighting luminaires quality especially related to luminous intensity distributions. Certain problems arising from illuminating objects by using improper luminaires are presented and discussed. As an attempt to improve the situation, the author shows his innovative concept of the luminaire optical system. Finally, to verify the proposed luminaire optics, the author has made a comparison of his conception with two other luminaires.
    Źródło:
    Challenges of Modern Technology; 2015, 6, 1; 6-10
    2082-2863
    2353-4419
    Pojawia się w:
    Challenges of Modern Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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