Appropriate Illumination Level in Office for Smartphone Users

Abstract

This research is to study how natural light influences normal light office illuminance, which results eye fatigue from smartphone reading. Since light is a key factor in perception, it is utilized in future researches, developments, and studies as well as the usage of smartphone becoming necessary for communication, coordination, and discovery of new things. It is a key device for self-adapting to swift modern life. However, there are certain disadvantages to eyesight, if it is used in inappropriate office lighting.

 According to data collection, the lowest illuminance of the smartphone screen perceived by the eyes was 13 lux and the highest was 1791 lux. The result of assessment after testing eyes fatigue analyzed with the illuminance of the smartphone screen perceived with eyes of the participants who took the test in the normal lighting office with the influence of natural light as well were at 585 – 1257 lux which is the ideal illuminance of the smartphone screen when using a smartphone in the office with the average illuminance on office desk at 107 lux, the lowest and the highest was at 328 lux.

The comparison on ratio of the illuminance of the visually perceived working plane to the illuminance of the smartphone screen perceived by eyes or the Contrast Ratio in a typical light office with natural light influence, the contrast ratio was between 1:40 and 1:114 which is the most decent range of eyesight.