Assessment of Visual Environment Necessary for Business Continuity in Emergencies (Part 1) ： a Study of Visual Environment Assessment Using Head Mounted Display Virtual Reality System

Abstract

To become resilient to emergencies where electric supply systems could be damaged for long period of time after a disaster, we need appropriate lighting standards for sustainable business activities which require less energy consumption. We proposed a virtual reality simulation system which can provide real visual environment to observers. Using this system, we examined the minimum focal lighting environment required for office workers to continue working for 3 to 10 days during emergency aftermaths. The result showed that this can be as small as 75 lux on working surface when appropriate ambient lighting is provided to keep comfortable room brightness.