Establishing Functional Model of Photometric Performance of Trichromatic Light Sources in Chromaticity Diagrams
In this study, we conducted a combined examination of the photometric and colorimetric performances of trichromatic light sources, which are synthesized by three kinds of light-source units, by transferring their photometric performance to chromaticity diagrams. Contour maps of three photometric per...
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IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8370082/ |
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| author | Qi Yao Wanlu Zhang Lu Zhang Yu Bian |
| author_facet | Qi Yao Wanlu Zhang Lu Zhang Yu Bian |
| author_sort | Qi Yao |
| collection | DOAJ |
| description | In this study, we conducted a combined examination of the photometric and colorimetric performances of trichromatic light sources, which are synthesized by three kinds of light-source units, by transferring their photometric performance to chromaticity diagrams. Contour maps of three photometric performances, which are within a triangle gamut-area formed by three chromaticity coordinates relating to three-light-source-units of a trichromatic light source, were drawn to include the luminous efficacy of radiation (LER) in photopic, scotopic, and cirtopic vision. Functional models of the three different photometric performances as a function of chromaticity coordinates x and y based on the contour maps have been proposed. The functional models quantify all the photometric characteristics in the gamut area and can predict the performances for different synthesis of trichromatic light sources. Using the proposed model, it is possible to evaluate the present performance of trichromatic light sources and provide a method for optimization. An example of evaluation and optimization of a commercial RGB-LED light source was conducted using this proposed approach. Results show that the randomly chosen optimized points in the best optimization ways in the chromaticity diagram for LERs reach 16%, 31%, and 72% improvement in photopic, scotopic, and cirtopic vision, respectively. |
| format | Article |
| id | doaj-art-3713a56ee1ee4f4ea509cf5dc0cd7e57 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | IEEE |
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| series | IEEE Photonics Journal |
| spelling | doaj-art-3713a56ee1ee4f4ea509cf5dc0cd7e572025-08-20T03:32:46ZengIEEEIEEE Photonics Journal1943-06552018-01-0110411210.1109/JPHOT.2018.28421518370082Establishing Functional Model of Photometric Performance of Trichromatic Light Sources in Chromaticity DiagramsQi Yao0https://orcid.org/0000-0002-4897-0423Wanlu Zhang1Lu Zhang2Yu Bian3College of Architecture and Urban Planning, Shenzhen Key Laboratory for Optimizing Design of Built Environment, Shenzhen University, Shenzhen, ChinaInstitute for Electric Light Sources, Fudan University, Shanghai, ChinaCollege of Architecture and Urban Planning, Shenzhen Key Laboratory for Optimizing Design of Built Environment, Shenzhen University, Shenzhen, ChinaState Key Lab of Subtropical Building Science, South China University of Technology, Guangdong, ChinaIn this study, we conducted a combined examination of the photometric and colorimetric performances of trichromatic light sources, which are synthesized by three kinds of light-source units, by transferring their photometric performance to chromaticity diagrams. Contour maps of three photometric performances, which are within a triangle gamut-area formed by three chromaticity coordinates relating to three-light-source-units of a trichromatic light source, were drawn to include the luminous efficacy of radiation (LER) in photopic, scotopic, and cirtopic vision. Functional models of the three different photometric performances as a function of chromaticity coordinates x and y based on the contour maps have been proposed. The functional models quantify all the photometric characteristics in the gamut area and can predict the performances for different synthesis of trichromatic light sources. Using the proposed model, it is possible to evaluate the present performance of trichromatic light sources and provide a method for optimization. An example of evaluation and optimization of a commercial RGB-LED light source was conducted using this proposed approach. Results show that the randomly chosen optimized points in the best optimization ways in the chromaticity diagram for LERs reach 16%, 31%, and 72% improvement in photopic, scotopic, and cirtopic vision, respectively.https://ieeexplore.ieee.org/document/8370082/Photopic luminous efficacy of radiationscotopic luminous efficacy of radiationcirtopic luminous efficacy of radiationspectral optimizationphotometric functional modeltri-chromatic light sources. |
| spellingShingle | Qi Yao Wanlu Zhang Lu Zhang Yu Bian Establishing Functional Model of Photometric Performance of Trichromatic Light Sources in Chromaticity Diagrams IEEE Photonics Journal Photopic luminous efficacy of radiation scotopic luminous efficacy of radiation cirtopic luminous efficacy of radiation spectral optimization photometric functional model tri-chromatic light sources. |
| title | Establishing Functional Model of Photometric Performance of Trichromatic Light Sources in Chromaticity Diagrams |
| title_full | Establishing Functional Model of Photometric Performance of Trichromatic Light Sources in Chromaticity Diagrams |
| title_fullStr | Establishing Functional Model of Photometric Performance of Trichromatic Light Sources in Chromaticity Diagrams |
| title_full_unstemmed | Establishing Functional Model of Photometric Performance of Trichromatic Light Sources in Chromaticity Diagrams |
| title_short | Establishing Functional Model of Photometric Performance of Trichromatic Light Sources in Chromaticity Diagrams |
| title_sort | establishing functional model of photometric performance of trichromatic light sources in chromaticity diagrams |
| topic | Photopic luminous efficacy of radiation scotopic luminous efficacy of radiation cirtopic luminous efficacy of radiation spectral optimization photometric functional model tri-chromatic light sources. |
| url | https://ieeexplore.ieee.org/document/8370082/ |
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