Product Name: 25mm Germanium Windows Optical Ge Window Model NO.: D5~D300 Coating: Ar Bbar Customized: Customized Certification: RoHS, ISO9001 Lenses Color: Grey Material: Optical Germanium Shape: Round Transmittance: >95% Type: Window Usage: Optical Trademark: ICC Transport Package: Wrapped in Silk Paper Origin: Qinhuangdao China HS Code: 9001909090 Product Description Germanium windows, opaque in the UV and visible parts of the spectrum, have a broad transmission range and are well-suited for IR applications.Germaniumis a very hard, high-density material - characteristics that are advantageous where robustness is needed. Germanium's high density also makes it heavy, something to be considered when designing it into optical systems where weight is a consideration. Another characteristic of Germanium is thermal runaway, which means that its transmissive properties decrease as temperature increases.GermaniumLensSpecificationOrientation<111><100>GrowthMethodFZ/CZSize&ToleranceCustomizedSurfacePolishing&Grinding&coatingPolishingsurface40-20/20-10CoatingARcoatingClearapertureCustomizedSphericityuniformity2fringe@632.8nm/customizedSphericityirregularity1fringe@632.8nm/customizedTransmittance>95%Wavelength8-14umRa/Rz<1nm/3nmwindows are used in optical systems to seqarate the environment of one part of the system from another. For CO2-lasers ,ICC offers windows produced from1.Germanium2.Zinc Selenide -AR coated windows -Uncoated windows -Combined coated windows -Brewster windows -Gallium ArenideUtilized for CO2-laser-based heatreating, welding, cutting, drilling, and marking apparatuses.Baises the plane-convex and meniscus lens shapes already mentioned, ICC supplies biconvex and cylindrical lenses. Customer-made lenses are manufactured upon request.Zinc selenide, Gallium Arsenide, and Patassium Chloride can be used for production of lenses. Standard ZnSe and GaAs lenses are offered are offered with both surfaces AR coating at 10.6um.KCL lenses are supplied uncoated.materialOptical grade monocrystalline GeClear aperture> 90% of sizeDiameter (width & length) tolerance, mm+0.0/-0.1Thickness tolerance, mm+/-0.1Parallelism, arc. min<=5Surface quality,scr/digfor parts to 3 in.40/20for parts to 8 in.60/40For large parts80/50surface figure (power-irregularity)@633nm,fringes1~1/2Coating(residual) reflectivity is specified per surface,%AR/AR@10.6um<0.5BBAR/BBAR@9~11um2.0Damage threshold (CW mode,kW/cm2)1Packaging & ShippingGermanium LensPackaging1.Shock-proofpacking2.Vacuumpacking/soft material in box3.CasewithpolyfoamorcystosepimentFAQQ: Areyouatradingcompanyorafactory?A: Weareafactory,whichcanreduceallcostwecancontrol.Q: What'syouradvantage?,A:1.Price.Wearenottradingcompany,wecanreducethecost.2. Technology.Ourcompanyhas7yearsexperienceonproducingsiliconproducts,especiallysiliconlaserscanningmirror,IRsiliconlens,siliconwaferandspecialshapeproducts.3. After-salesservice.Wecanberesponsibleforourquality.Q: What'syourmainproducts?A: Therearesiliconwafer,cuttingsiliconwafer,siliconCO2laserreflectedmirror,IRsilicon/germaniumlens,siliconlaserscanmirror,siliconsputteringtarget,silicon/germaniumingotandsoon.Wecanalsoproducespecialshapesiliconproductsaccordingtoyourdrawing.