Infrared lens commonly used optical component - germanium lens

Infrared lens commonly used optical component - germanium lens

Germanium crystals have a high refractive index, are only transparent to infrared light, and are opaque to visible light and ultraviolet light. As an optical material, it has unique and excellent properties and can be used to make special infrared-transmitting germanium windows, prisms, lenses, etc. The following introduces the excellent application of germanium glass in infrared optical systems.

Germanium glass has good light transmission performance in the 2-16μm band, and its chemical properties are relatively stable. It is not easy to react with metal oxides, acidic substances, air and water. Infrared cameras generally work in the wavelength range of 2-13μm, and germanium glass has very good light transmittance in the mid-to-far infrared band, while ordinary optical glass has extremely low light transmittance in these bands.

Coating an optical film on the germanium glass can greatly increase the transmittance of infrared rays and reduce the reflectivity of the surface of the germanium glass.

The melting density of germanium is 5.32 g/cm3, and it is a silver-gray brittle metal. Germanium may be classified as a scattered metal. Germanium is chemically stable and does not interact with air or water vapor at room temperature.

Germanium is a rare metal element, and it is very difficult to extract high-concentration germanium, because ores containing germanium are very rare, and germanium is very scattered, and there are almost no relatively concentrated germanium ores. Therefore, the production cost of germanium glass is relatively high.

In addition, germanium has good semiconductor properties, such as electron mobility, hole mobility and so on.

The company's main products include infrared lenses, night vision objectives lens and other customized optical lenses.  It is mainly suitable for scenarios such as thermal imagers, infrared sights, night vision, infrared cameras, and drone monitors.  Our company has professional production equipment and an authoritative technical team.  Our customers are all over the world and have been widely recognized by customers during the cooperation.  Before the product leaves the factory, we will carry out strict quality tests to ensure the quality of the product.  If you want to know more information about MWIR lenses, welcome to consult us.  Our website is www.risingoptic.com.