Technique of Increasing Brightness Sensation in Lighting Design

Abstract

Brightness perception, which is one of the most important of five senses, has impacted about 70% of all the body's sensory receptors. ( Soonthorn Boonyatikarn, 2004) From interior brightness system survey, it is found that building designed with CIE brightness standard or higher with high capacity of electrical consumption but people still feel dark inside the building. Therefore, this paper objects to analyze interior lighting design factors to increase brightness as well as eye perception and also search for new design implementation to make an effective brightness. Then, it would save electrical consumption of lighting system. The concourse area were selected and surveyed including passenger terminal of Suvarnabhumi Airport.

The study started from questionnaire survey for the advantages and disadvantages of architecture interior design which has impacted the brightness perception. Then, brightness data was measured of fore view vision and peripheral vision with statistical questionnaire. Which focused on visual sensation, inspection of void and opening, light beam control and Glare Ratio. The results indicated that existing interior design was decorated with dark color which absorbs a lot of light. The remainder surfaces only allowed day light reflecting as diffuse surface. The fore view and peripheral vision ratio is only 20% of electric lights within the terminal. The interior glass wall decoration effect on brightness glare ratio of both inside and outside the terminal. When passengers walk pass many areas. It caused high level of discomfort glare and make eyes feel uncomfortable.

After the development from results constant glare light ratio would be well controlled, the contrast ratio should not exceed 1:3, and use bright painted wall. Furthermore, the lamp could reduce about five times of all serviced electric lights to reduce glare light while passenger pass along. The results illustrate that brightness level can be lower than IEC standard with satisfaction of passenger in the concourse.