It is estimated that many friends are not very clear about the differences between ceramic calibration plates and optical glass calibration plates. The reflective rate of the calibration plate made of our ceramic materials can be reduced by 80%. It has excellent characteristics of high temperature resistance, abrasion resistance, chemical corrosion resistance, and low density. Therefore, the optical performance is good in terms of whiteness, transmittance, and glossiness.
The soda glass calibration plate is a kind of commonly used calibration plate. This optical calibration plate has stable chemical properties and good accuracy. This material is free of impurities and bubbles. It is a good material for high-precision calibration plates, and the price is not expensive. The refractive index of this calibration plate is 1.6x10 to the minus sixth power, and its color is distinguished. The calibration plate used in Russia is silver; The color of calibration plates in Germany and Austria is blue; The color of calibration plates in America and Japan is yellow. The color of domestic medium and good calibration plates is yellow, which is determined by the coating process, but the advantages and disadvantages of calibration plates cannot be judged by color alone.
The calibration plate made of quartz has good light transmittance, and its advantage is small expansion coefficient. In the process of calibrating the instrument, it is less affected by the ambient temperature. The corresponding cost is also high. Quartz materials are divided into JGS1 and JGS2. JGS1 is expensive. JGS2 is relatively cheap with bubbles inside.
For the calibration plate made of matte material, the matte is relative to the polishing, that is, the non bright surface. It can avoid light pollution and is easy to maintain. The matte surface is a little hairy, like the surface of frosted glass. Reflected light is diffuse reflection, and there is also a metal calibration plate. This calibration plate has the advantage of being resistant to falling and durable, but its disadvantage is also very prominent. It has almost no precision in terms of precision. Therefore, friends who want to buy high-precision calibration plates will not choose metal calibration plates
