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The effects of illuminance, colour temperature, and colour rendering of various existing light-emitting diode lamps on subjective preference and performance in Indonesia
Revantinoa,b, Mangkuto R.A.a, Enge A.a, Munir F.a, Soelami F.X.N.a, Faridahc
a Engineering Physics Program, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung, Indonesia
b Center for Material and Technical Product (B4T), Ministry of Industry of the Republic of Indonesia, Bandung, 40135, Indonesia
c Engineering Physics Program, Faculty of Engineering, Universitas Gadjah Mada, Yogyakarta, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2018 Elsevier LtdStudies on user acceptance of Light-Emitting Diode (LED) lighting were largely done in developed countries, while there are presumably significant differences between the developed and developing countries. Series of measurements of various domestic LED lamps in Indonesia were conducted to investigate the effects of varying illuminance (Eav), Correlated-Colour Temperature (CCT), and Colour Rendering Index (CRI) on visual perception and to determine the users’ preference of those parameters in Indonesian context. Visual assessments were conducted using observation booths in a dark room. The assessments were consisted of subjective performance and preference tests. The performance tests focused on the subjects’ acuity in reading letters with various size and contrast; while the preference tests focused on the perception of lighting level, colour clarity, colour appearance, and overall visual comfort. It was found that variation of CCT yields significant effect on colour clarity and visual comfort. In term of colour appearance, variation of CCT yields more significant effect compared to CRI, while illuminance gives no effect. On lighting level, variation of both Eav and CCT yields more significant effect compared to CRI. Most of the participating subjects felt visually comfortable under the CCT of 6500 K, average desktop illuminance of 350 lx, and higher CRI value.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Colour rendering,Colour-rendering indices,Developed countries,Illuminance,Light emitting diode (LED),Performance,Preference,Subjective performance[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Colour rendering,Colour temperature,Illuminance,Light-emitting diode,Performance,Preference[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]This research was supported by the Ministry of Research and Higher Education of the Republic of Indonesia , through the Fundamental Research Program No. 009/ADD/SP3H/LT/DRPM/VIII/2017 . We gratefully acknowledge the funding from USAID through the SHERA program – Centre for Development of Sustainable Region (CDSR).[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.jobe.2018.05.023[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]