Define polarizationin chemistry

World standard Neutral density filters (W-ND filters) with top quality and excellent optical performance. W-ND series is designed to match the world standard and different from current line of neutral density glass types in terms of thickness and transmittance. Neutral density filters can be used for various purposes including adjustment of light amount as the light intensity can be controlled without selectively absorbing light with a specific wavelength (405nm, 546nm and 694nm). Specification of W-ND series are different from the conventional HOYA ND filters.Application: Camera