TY - JOUR
T1 - ENERGY EFFICIENT HUMAN CENTERED OFFICE LIGHTING
T2 - A CASE STUDY ON OPEN PLAN OFFICE WITH ABSENT ACCESS TO DAYLIGHT
AU - Aliparast, Sevda
AU - Onaygil, Sermin
N1 - Publisher Copyright:
© 2023, LLC Editorial of Journal ""Light Technik"". All rights reserved.
PY - 2023
Y1 - 2023
N2 - Our daily behaviours and physiological functions are regulated by the brain’s central biological clock. Consistent exposure to bright days and dim nights is crucial for aligning these rhythms. Since we spend much time indoors, electrical lighting is often relied upon to sync our circadian rhythms. A challenge in promoting circadian entrainment through electrical lighting is the lack of a standardized test for assessing how effectively lighting luminaires provide circadian-effective light to occupants. This study introduces a case study, optimum suspended height (OSH), measuring luminaire efficiency in achieving a circadian stimulus criterion (CS: 0.3) and equivalent melanopic illuminance in lx (EML: 240) for 38 office workers, based on performance and comfort criteria. The paper outlines OSH application to individual linear luminaire type, including suspended-mounted fixtures. In this field study, tests were conducted to explore how indoor lighting affects occupants’ cognitive performance and visual perception. Linear suspended LED luminaires (LSL) were installed in an open-plan office at Istanbul Technical University (ITU), where office workers were exposed to different heights of lighting conditions. They took visual attention tests and assessed proofreading comfort, with alertness measured using the Karolinska Sleep iness Scale (KSS) test. The study aimed to understand the impact of visual fatigue on cognitive performance and perception with. These initial findings shed light on the relationship between office lighting changes and occupants’ cognitive performance and visual perception.
AB - Our daily behaviours and physiological functions are regulated by the brain’s central biological clock. Consistent exposure to bright days and dim nights is crucial for aligning these rhythms. Since we spend much time indoors, electrical lighting is often relied upon to sync our circadian rhythms. A challenge in promoting circadian entrainment through electrical lighting is the lack of a standardized test for assessing how effectively lighting luminaires provide circadian-effective light to occupants. This study introduces a case study, optimum suspended height (OSH), measuring luminaire efficiency in achieving a circadian stimulus criterion (CS: 0.3) and equivalent melanopic illuminance in lx (EML: 240) for 38 office workers, based on performance and comfort criteria. The paper outlines OSH application to individual linear luminaire type, including suspended-mounted fixtures. In this field study, tests were conducted to explore how indoor lighting affects occupants’ cognitive performance and visual perception. Linear suspended LED luminaires (LSL) were installed in an open-plan office at Istanbul Technical University (ITU), where office workers were exposed to different heights of lighting conditions. They took visual attention tests and assessed proofreading comfort, with alertness measured using the Karolinska Sleep iness Scale (KSS) test. The study aimed to understand the impact of visual fatigue on cognitive performance and perception with. These initial findings shed light on the relationship between office lighting changes and occupants’ cognitive performance and visual perception.
KW - circadian stimulus
KW - dynamic height
KW - equivalent melanopic illuminance (m-lx)
KW - human centred lighting
KW - vertical illuminance (vertical lx)
UR - http://www.scopus.com/inward/record.url?scp=85185216571&partnerID=8YFLogxK
U2 - 10.33383/2023-052
DO - 10.33383/2023-052
M3 - Article
AN - SCOPUS:85185216571
SN - 0236-2945
VL - 31
SP - 102
EP - 108
JO - Light and Engineering
JF - Light and Engineering
IS - 6
ER -