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Papers by Robert Supronowicz

Research paper thumbnail of Color quality consideration when switching from FL to LED

Photonics Letters of Poland

Fluorescent lamps (FLs) used for general lighting due to European Union legislation will be withd... more Fluorescent lamps (FLs) used for general lighting due to European Union legislation will be withdrawn from sale by 2023. The LEDs which are proposed as substitute of FL should provide the same quality of lighting and visual comfort. The research on substituting FL lamps is based on the multi-criteria parameterization. It is indicates that LEDs substituting the FLs may not meet the end user expectations due to the Color Preference Criteria. The paper compare typical FL (4100 K) lamp named by CIE as illuminant FL3.5 with its corresponding LED substitutes available on the market. The LED substitute selection criterion were value of Corelated Color Temperature (CCT) and chromaticity point which was must be within ellipse provided by ANSI C78.376 document for 4100 K CCT. Full Text: PDF ReferencesW. Żagan, Conditions necessary to replacing the conventional lamps by energy-saving lamps, Przeglad Elektrotechniczny, R. 85, 100 (2009). DirectLink M. Zalesinska, J. Zablocka, K. Wandachowicz, &...

Research paper thumbnail of Application of different metrics for describing light color quality of white LED

Photonics Letters of Poland

Using the example of the UV-excited Ca9KMg(PO4)7:1% Eu2+ phosphor, methods for characterizing the... more Using the example of the UV-excited Ca9KMg(PO4)7:1% Eu2+ phosphor, methods for characterizing the color quality of the light emitted by it at different operating temperatures are described. The effect of adopting two different colorimetric observers established by the International Commission on Illumination (i.e., the CIE 1931 observer with a viewing angle of two degrees and the CIE 2015 observer with a viewing angle of ten degrees) on the position of the chromaticity point of light emitted by phosphor is discussed. It was demonstrated that using the CIE 2015 photometric observer to determine the position of the chromaticity point, the tested phosphor is characterized by smaller changes in the color of emitted light as a function of operating temperature than when using the CIE 1931 observer. Full Text: PDF ReferencesR. Pązik et al., "Thermal quenching mechanisms of the Eu3+ luminescence in Ca9Al(PO4)7 obtained by citric route", Materials Research Bulletin, Vol. 48, I.2, ...

Research paper thumbnail of The Influence of Spectral Measurements Uncertainty of Fluorescent Lamps on Calculated Value of Their Relative Melanopic Weighted Irradiance and Colour Quality Parameters

2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4), 2018

The article presents quantities which are describing light sources color quality and their impact... more The article presents quantities which are describing light sources color quality and their impact on human body nonvisual effect. Based on spectral power distributions data of three fluorescent lamps, measured by independent laboratories, the paper verified how such measurements differences could influents calculated based on them color and melanopic quantities. The results showed that for the color quality indices there is no significant influences of inter-laboratory variations in spectral power distribution. Additionally the SPDs measurement uncertainty with negligible value affected the calculated melanopic irradiance.

Research paper thumbnail of Oświetlenie boisk sportowych : zalecenie projektowe dotyczące wartości współczynnika utrzymania

Research paper thumbnail of The LED spectral power distribution modelled by different functions - how spectral matching quality affected computed LED color parameters

2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior), 2019

The paper is describing different alternatives for mathematical modelling of LED’s spectral power... more The paper is describing different alternatives for mathematical modelling of LED’s spectral power distribution. Gaussians, logistic power peak and asymmetric double sigmoidal functions are tested with different shape and peak wavelength LEDs. Article shows how SPD accuracy modeling is affecting color quality parameters and luminous efficiency of LED. Consequences of applying always single SPD model for different LED emitters are shown for chosen parameters.

Research paper thumbnail of Urban park lighting as a source of botanical light pollution

Photonics Letters of Poland, 2019

In this paper we are focusing on analysis of spectral power distribution (SPD) LED's lamp imp... more In this paper we are focusing on analysis of spectral power distribution (SPD) LED's lamp impact on botanical light pollution, described in relation to full moon light. We introduced new index RMPI which is called Photosynthesis Index in Relation to Moon. We found that in the case when lighting are realized by using LED luminaires instead of high pressure sodium (HPS) or metal halide (MH) lamps, light influence on plant vegetation process amplifies. Additionally our research shows that lamp's CCT is not a sufficient indicator of botanical light pollution and only SPD should be used for this purpose. Full Text: PDF ReferencesP. Tabaka, I. Fryc, Landscape Lighting as a Source of Light Pollution - the Effect of the Seasons on this Phenomenon, Lighting Conference of the Visegrad Countries, Lumen V4, 10.1109/LUMENV.2016.7745541 (IEEE 2016) CrossRef I. Fryc, F. Bisegna, P. Tabaka, Lighting on Recreation Grounds as a Source of Sky Glow - the Influence of Luminaire Type on this Phen...

Research paper thumbnail of Color quality consideration when switching from FL to LED

Photonics Letters of Poland

Fluorescent lamps (FLs) used for general lighting due to European Union legislation will be withd... more Fluorescent lamps (FLs) used for general lighting due to European Union legislation will be withdrawn from sale by 2023. The LEDs which are proposed as substitute of FL should provide the same quality of lighting and visual comfort. The research on substituting FL lamps is based on the multi-criteria parameterization. It is indicates that LEDs substituting the FLs may not meet the end user expectations due to the Color Preference Criteria. The paper compare typical FL (4100 K) lamp named by CIE as illuminant FL3.5 with its corresponding LED substitutes available on the market. The LED substitute selection criterion were value of Corelated Color Temperature (CCT) and chromaticity point which was must be within ellipse provided by ANSI C78.376 document for 4100 K CCT. Full Text: PDF ReferencesW. Żagan, Conditions necessary to replacing the conventional lamps by energy-saving lamps, Przeglad Elektrotechniczny, R. 85, 100 (2009). DirectLink M. Zalesinska, J. Zablocka, K. Wandachowicz, &...

Research paper thumbnail of Application of different metrics for describing light color quality of white LED

Photonics Letters of Poland

Using the example of the UV-excited Ca9KMg(PO4)7:1% Eu2+ phosphor, methods for characterizing the... more Using the example of the UV-excited Ca9KMg(PO4)7:1% Eu2+ phosphor, methods for characterizing the color quality of the light emitted by it at different operating temperatures are described. The effect of adopting two different colorimetric observers established by the International Commission on Illumination (i.e., the CIE 1931 observer with a viewing angle of two degrees and the CIE 2015 observer with a viewing angle of ten degrees) on the position of the chromaticity point of light emitted by phosphor is discussed. It was demonstrated that using the CIE 2015 photometric observer to determine the position of the chromaticity point, the tested phosphor is characterized by smaller changes in the color of emitted light as a function of operating temperature than when using the CIE 1931 observer. Full Text: PDF ReferencesR. Pązik et al., "Thermal quenching mechanisms of the Eu3+ luminescence in Ca9Al(PO4)7 obtained by citric route", Materials Research Bulletin, Vol. 48, I.2, ...

Research paper thumbnail of The Influence of Spectral Measurements Uncertainty of Fluorescent Lamps on Calculated Value of Their Relative Melanopic Weighted Irradiance and Colour Quality Parameters

2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4), 2018

The article presents quantities which are describing light sources color quality and their impact... more The article presents quantities which are describing light sources color quality and their impact on human body nonvisual effect. Based on spectral power distributions data of three fluorescent lamps, measured by independent laboratories, the paper verified how such measurements differences could influents calculated based on them color and melanopic quantities. The results showed that for the color quality indices there is no significant influences of inter-laboratory variations in spectral power distribution. Additionally the SPDs measurement uncertainty with negligible value affected the calculated melanopic irradiance.

Research paper thumbnail of Oświetlenie boisk sportowych : zalecenie projektowe dotyczące wartości współczynnika utrzymania

Research paper thumbnail of The LED spectral power distribution modelled by different functions - how spectral matching quality affected computed LED color parameters

2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior), 2019

The paper is describing different alternatives for mathematical modelling of LED’s spectral power... more The paper is describing different alternatives for mathematical modelling of LED’s spectral power distribution. Gaussians, logistic power peak and asymmetric double sigmoidal functions are tested with different shape and peak wavelength LEDs. Article shows how SPD accuracy modeling is affecting color quality parameters and luminous efficiency of LED. Consequences of applying always single SPD model for different LED emitters are shown for chosen parameters.

Research paper thumbnail of Urban park lighting as a source of botanical light pollution

Photonics Letters of Poland, 2019

In this paper we are focusing on analysis of spectral power distribution (SPD) LED's lamp imp... more In this paper we are focusing on analysis of spectral power distribution (SPD) LED's lamp impact on botanical light pollution, described in relation to full moon light. We introduced new index RMPI which is called Photosynthesis Index in Relation to Moon. We found that in the case when lighting are realized by using LED luminaires instead of high pressure sodium (HPS) or metal halide (MH) lamps, light influence on plant vegetation process amplifies. Additionally our research shows that lamp's CCT is not a sufficient indicator of botanical light pollution and only SPD should be used for this purpose. Full Text: PDF ReferencesP. Tabaka, I. Fryc, Landscape Lighting as a Source of Light Pollution - the Effect of the Seasons on this Phenomenon, Lighting Conference of the Visegrad Countries, Lumen V4, 10.1109/LUMENV.2016.7745541 (IEEE 2016) CrossRef I. Fryc, F. Bisegna, P. Tabaka, Lighting on Recreation Grounds as a Source of Sky Glow - the Influence of Luminaire Type on this Phen...