HOW LED LIGHTING MAY AFFECT OFFICE ERGONOMICS: THE IMPACT OF PROVIDING ACCESS TO CONTINUOUS DIMMING CONTROLS ON TYPING AND COLOUR-MATCHING TASKS PERFORMANCE

This study investigated the impact of providing young office workers individual access to continuous dimming controls of LED lighting on their performance of typing and colour-matching tasks and the subjective ratings of their task performance. A total of 30 young people participated. It was found that under the tested specific LED lighting providing access to continuous dimming controls didn't affect the participants' typing task performance and their subjective ratings of typing task difficulty, and satisfaction of their typing task performance. However, the participants' colour matching performance became worsen due to the perceived slight difference of CCT. Nonetheless, the perceived difficulty of the colour matching tasks and the subjective satisfaction of the colour matching task performance were not changed. The young participants' rating of the office lighting quality (e.g., brightness, uniformity, glare, CCT, CRI, flickering, noise) in the test room was also not affected.