Some materials appear to have considerable difference in gloss yet give comparable readings when measured with a glossmeter at one angle. These materials can be separated by measuring at a second angle and comparing the two readings. Haze is defined by ASTM D4039 as the difference between gloss at 60º and the gloss at 20º. Haze Meters are used to measure Haze.
The Novo-Gloss IQ characterises reflective properties in a way that simulates the perception of a human observer, giving a detailed understanding of surface quality. Micro-structures on the surface of a high gloss surface can cause a reflected image to bloom and become indistinct, longer wavelength surface ripples known as orange peel can also distort this image. The Novo-Gloss IQ uses the complete specular reflectance data to calculate; Gloss, Peak Specular Reflectance, Haze and Distinctness of Image values.
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