Optical hazing effect is not a new phenomenon. So what is Optical hazing? How does it present itself and what causes it?
Firstly, it will present as a smoky, hazy, smudgy type of finish in the surface of polished porcelain tiles, it will only be visible when a direct light source reflects at a certain angle across the surface of the tile.
Optical hazing is caused by light. If you could observe a ray of light approaching a mirror you would see it also bouncing or reflecting from the mirror. Where and how it bounces or reflects is referred to as the “behaviour of light as it reflects” and is known as the “law of reflection”.
Reflection off a smooth surface such as a mirror is known as specular reflection. While reflection off a rough surface such as ceramic tiles is known as diffuse reflection. Many consumers have expectations that their polished porcelain floor is going to have a mirror like finish. A polished porcelain tile is not a mirror. When the surface of a polished porcelain tile is examined under a microscope, small micro facets are found. Light that strikes these micro facets reflects in a diffused manner giving a “Halo” or “Haze” effect.The amount of haze visible depends on several factors:
It is worth restating that Polished porcelain tiles are not mirrors and such an expectation should not be created during the selling process. It is paramount that the consultants advise the end user of optical haze characteristics that may occur.