Supply K9 optical imaging lens, optical glass lens, infrared temperature measurement germanium convex lens, concave lens

On 2-12 μ Within the range of m, germanium is the most commonly used material for making optical lenses and windows in efficient infrared imaging systems. Germanium has a high refractive index (2-14 μ The characteristics of approximately 4.0 at the m-band, minimum surface curvature, and small color difference are usually not required for correction in low-power imaging systems. Germanium is severely affected by temperature, and its transmittance decreases with increasing temperature. Therefore, they can only be applied below 100 degrees Celsius. When designing systems with strict weight requirements, the density of germanium (5.33 g/cm3) should be considered. Germanium is mainly used in thermal imaging systems and forward looking infrared (FLIR) fields. Germanium lens material Germanium type flat convex flat concave double convex double concave crescent diameter 5-300mm+0/-0.2 careful deviation<3 minutes focal length tolerance ± 2% surface shape △ N surface quality 60/40 aperture>90% chamfer protection<0.5mmX45 degrees