type1：D15*1 mm, dual AR

type2：D20* 2mm, dual AR

type3：D20* 2mm ，one side DLC and one  side AR

type4：D20* 3mm, dual AR

type5：D20* 3mm ，one side DLC and one  side AR

type6：D25*2 mm, dual AR

type7：D25* 2mm ，one side DLC and one  side AR

type8：D25* 3mm, dual AR

type9：D25* 3mm，one side DLC and one  side AR

type10：D40* 2mm, dual AR

type11：D40* 2mm ，one side DLC and one  side AR

type12：D50.8*3 mm, dual AR

type13：D50.8* 3mm ，one side DLC and one  side AR

Wavelength: 8 to 12 um

Germanium (Ge) single crystal is a kind of chemical inert material, its transmission spectrum range is 2--12μm, is a very common infrared optical material, with high hardness, good thermal conductivity, insoluble in water and other characteristics. Widely used in infrared imaging system and infrared spectrometer system. Germanium single crystal has good mechanical properties and thermal conductivity, with small absorption at 10.6μm, making it an ideal material for CO2 laser lenses, Windows and output coupling mirrors. Germanium (Ge) single crystal is also used as the base material for various infrared filters