GeneralPurposeplanewindowsFlatpolishedsurfaceLaserfinishbothsidesApplyanyanti-reflectingcoatingThesegeneralpurposeplanewindowsarepolishedtoλ/10flatnessexceptwhereindicatedotherwise.Theyareintendedfortransmissiveuseandareparalleltobetterthan3arcminor10arcsec.Selectacoatingappropriatetoyourapplicationorcontactuswithyourspecialcoatingrequirements. PartNo.  D  T ≤3arcmin≤10arcsec Diameter(inches)Thickness perinch  FlatnessWI-1206BPW-1206B 0.50 0.250″ BK7A  λ/10WI-1906BPW-1906B0.75 0.250″BK7Aλ/10WI-1909BPW-1909B0.75 0.375″BK7A λ/10WI-2505BPW-2505B1.005.0mmBK7A λ/10WI-2506BPW-2506B1.000.250″BK7A λ/10WI-2509BPW-2509B1.000.375″ BK7A λ/10WI-3809BPW-3809B1.50 0.375″ BK7A λ/10WI-5005BPW-5005B2.005.0mmBK7A λ/10WI-5006BPW-5006B2.000.250″BK7A λ/10WI-5009BPW-5009B2.000.375″ BK7A λ/10WI-7612BPW-7612B3.00 0.500″ BK7A λ/10WI-1206BPW-1206B0.500.250″UV F.S.  λ/10WI-1906BPW-1906B0.750.250″UV F.S.  λ/10WI-1909BPW-1909B0.750.375″UV F.S.  λ/10WI-2505BPW-2505B 1.00 1.5mmUV F.S.  λ/10WI-2506BPW-2506B 1.00 5.0mmUV F.S.  λ/10WI-2509BPW-2509B 1.00 0.250″UV F.S.  λ/10WI-3809BPW-3809B1.500.375″UV F.S.  λ/10WI-5005BPW-5005B 2.00 0.375″UV F.S.  λ/10WI-5006B PW-5006B 2.00 0.375″UV F.S.  λ/10WI-5009B PW-5009B2.0010.0mm UV F.S.λ/10WI-7612B PW-7612B3.00  0.500″ UVF.S.λ/10WI-2502SPW-2502S1.001.5mmSapphire(40/20) λ/2SpecificationsSurfaceFlatness: Seetable--measured@633nmSurfaceQuality   <10/5(bothsides)Parallelism   WI:  ≤3arcminPW:  ≤10arcsecDiameterTolerance<+0.00/-0.20mmThicknessTolerance<±0.25mmClearAperture ≥85%ofdiameterBevel 0.3mm(typical)*45°

GeneralPurposeplanewindowsFlatpolishedsurfaceLaserfinishbothsidesApplyanyanti-reflectingcoatingThesegeneralpurposeplanewindowsarepolishedtoλ/10flatnessexceptwhereindicatedotherwise.Theyareintendedfort