Infrared optical material is one of the bases of the application of infrared technology. It refers to a kind of material used to make lens, prism, window, filter, fairing, etc. in infrared imaging and guidance technology. From the principle analysis, when the sunlight irradiates the ground through the atmosphere, the atmosphere can absorb some bands of infrared radiation, while it can transmit and transmit other bands Relatively speaking, the three infrared bands of short wave 0.7, medium wave 3 ~ 5pim and long wave 8 ~ 14um have high transmittance, and only the materials that can pass through these bands have practical application value, especially in the 8 ~ 14gm band, the infrared radiation of human body and other ground room temperature objects are in this band (about lopjn). Therefore, it is suitable for 8

Infrared materials (such as ZnS, ZnS, ZnSe, etc.) have more important significance.

Infrared optical materials mainly include zinc sulfide, diamond, monocrystal, silicon, Stellite, magnesium fluoride and sapphire. Their application prospects are very broad. The thermal mechanical and optical properties of common infrared optical materials can be seen in table L. zinc sulfide is the most important multi spectral infrared optical material at present. Our company has the ability to produce all kinds of infrared materials, such as zinc sulfide (ZnS), copper oxide and zinc selenide.

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