This paper presents visibility distances from twenty people who have viewed six internally illuminated elements of emergency lighting systems or wayguidance systems, under different ambient lighting, in smoke. The optical density of the smoke ranges from 0.8 m to 1.4 m. The six elements investigated are four emergency exit signs with graphical symbol formats and two types of exit door markings....

As LED lighting technology becomes omnipresent, lighting environments become more advanced and allow for adjusting various parameters such as color, brightness, and saturation. This poses challenges for interaction design, particularly when lighting environments are shared between multiple users. This paper presents “Vuur”: a shared physical interface with which users can control lighting in me...