Evaluating Effectiveness of Led and Oled Lights on User Visual Comfort and Reading Performance

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2021

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Istanbul Teknik Universitesi, Faculty of Architecture

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Interior Architecture and Environmental Design
The Atılım University Department of Interior Architecture and Environmental Design has developed an education program with an awareness where the discipline not only focuses on personal results through professional activities, but also involves the activities that are closely related to public security, health, comfort and welfare; aiming to improve the quality of life wherever possible, and catered to training creative and unique interior architects and environmental designers. In this scope, the mandatory and elective courses in the program cover the topics of designing, as well as devising and implementing projects for private properties, and public venues for education, shopping, entertainment, health care, culture, accommodation. With the fully-equipped Light and Color Laboratory and Acoustic Laboratories, the Department offers the opportunity to learn through observation and experience, and hands-on practice. The Department of Interior Architecture and Environmental Design is a member of the International Federation of Interior Architects/ Designers (IFI).

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In interior architecture, one of the main purposes of light is to create comfortable and functional spaces according to user needs. Light provides individuals to understand, get information for visual tasks and it affects how they experience and behave in the environment. Desired illuminance levels are required for visual comfort and task efficiency. This study analyzes the effects of different illuminance levels of light emitting diode (LED) and organic light emitting diodie (OLED) lights on user visual comfort and reading performance. An experiment was con-ducted with eighty interior architecture students at Çankaya University. Six lighting scenarios were created with LED and OLED lighting sources that assessed six visual comfort criteria. The experimental setting consisted of three different illuminance levels, as 200, 500 and 800 lx. The results revealed that different illuminance levels were found more comfortable for different visual comfort criteria, but the illuminance level of 500 lx was visually more comfortable than the other illuminance levels. The illuminance level of LED 200 lx was visually more comfortable than LED 800 lx. OLED light was found visually more comfortable than LED light. In addition, participants read slower under the illuminance level of LED 200 lx. It was concluded that illuminance levels of light effect user’s visual comfort and reading performance. This study provides a basis to recommend the preferred illuminance level for LED and OLED light during a reading performance. © 2021, Istanbul Teknik Universitesi, Faculty of Architecture. All rights reserved.

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Illuminance level, LED, OLED, Reading performance, Visual comfort

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Source

A/Z ITU Journal of the Faculty of Architecture

Volume

18

Issue

2

Start Page

397

End Page

411

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