The Study of LED Lighting Color Temperature and Visual Effect

Abstract

The application of LED was in an exploring stage, while it had a series of problems on architectural lighting, such as light distribution, color temperature selection and light attenuation. Based on the relations between color temperature and visual effect, this thesis discussed the relations between three kinds of LED color temperature and the changes of human pupil size. In the circumstances of settled lighting conditions, adjust visual regional background brightness, the changes of pupil size was measured with the aid of iView eye tracker. The survey finds that the pupil shrinks with the high rise of light source color temperature, which leads to the improvement of visual efficiency. However, high color temperature appears dazzling, which is likely to cause fatigue and discomfort.