A brief discussion on the infrared lens of infrared night vision device
Infrared lens is usually made of germanium glass with high refractive index. Germanium glass is only transparent to infrared light, but not to visible light and ultraviolet light. Compared with ordinary lenses, infrared lenses made of special germanium glass can gather light in a longer wavelength range on the same plane, so that objects can be seen clearly by infrared imaging during the day or at night.Infrared lens is usually made of germanium glass with high refractive index. Germanium glass is only transparent to infrared light, but not to visible light and ultraviolet light. Compared with ordinary lenses, infrared lenses made of special germanium glass can gather light in a longer wavelength range on the same plane, so objects can be seen clearly by infrared imaging during the day or at night. The reserves of germanium metal are not low, but the extraction of high-concentration germanium is very difficult, so the production cost of germanium lens glass is relatively high, and the market price is often higher than that of ordinary lens glass.
Gen 2+/3 Night Vision
Uncooled Thermal Imaging
Cooled Thermal Imaging
Laser Rangefinder