UV-Ray Filtering Capability of Transparent Glazing Materials for Built Environments

Abstract

In terms of lighting for the built environment, both providing healthy light and eliminating harmful components of light are the key factors for consolidation and for health promotion. The ingredients of daylight are exceedingly complicated and are classified by the wavelength of light. Ultraviolet (UV) light, wavelength between 400 nm—10 nm, is more energetic and will penetrate more readily through obstacles than visible light. In spite of all their positive uses, UV rays are very harmful for anyone who spends a large amount of time in the sun without proper protection. Glass and film manufacturers produce optically functional glass panes to control UV and infrared rays of sunlight. In order to curb excessive penetration of UV rays, optically functional glasses have been proposed and the performance assessments of the glazed materials have been measured and reported in this paper. Various pair-glasses consisting of UV control glass and the conventional are manufactured and evaluated, providing the photometric data in terms of wavelength. In conclusion, UV protection glass is more effective in controlling UV rays of natural light. Obviously, clear glass treated with UV protection film would provide excellent control of UV penetration and a pair of clear and UV protection glass treated with UV protection film should be recommended; this achieves 96.7% UV protection performance from natural light.