Traditional Culture Encyclopedia - Travel guide - How to define and calculate glass haze?

How to define and calculate glass haze?

fog level

definition

The interior or surface of transparent or translucent materials is turbid or turbid due to the diffusion of light. Expressed as a percentage of the diffuse luminous flux to the luminous flux transmitted through the material.

Calculation method

A beam of parallel light from the standard "C" light source shines vertically on transparent or translucent films, sheets and plates, and some parallel light deviates from the incident direction by more than 2.5? The percentage of the ratio of scattered light flux Td to transparent material flux T2 is the haze calculation formula. It is an important parameter of optical transparency of transparent or translucent materials.

Haze and light transmittance are two concepts. Materials with high haze may have low light transmittance. If the window glass is made of this material, the room looks bright during the day, but it is actually hidden; If you make a windshield of a car, it is obviously required that both should be good for observation.