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°

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BK7 Round Windows with Hole

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Detailed

Parameters

General Purpose plane windows

Flat polished surface

Laser finish both sides

Apply any anti-reflecting coating

These general purpose plane windows are polished to λ/10 flatness except where indicated otherwise.

They are intended for transmissive use and are parallel to better than 3 arcmin or 10 arcsec. Select a coating appropriate to your application or contact us with your special coating requirements.

Part No.		D	T
≤3 arcmin	≤10 arcsec	Diameter(inches)	Thickness	per inch	Flatness
WI-1206B	PW-1206B	0.50	0.250″	BK7A	λ/10
WI-1906B	PW-1906B	0.75	0.250″	BK7A	λ/10
WI-1909B	PW-1909B	0.75	0.375″	BK7A	λ/10
WI-2505B	PW-2505B	1.00	5.0mm	BK7A	λ/10
WI-2506B	PW-2506B	1.00	0.250″	BK7A	λ/10
WI-2509B	PW-2509B	1.00	0.375″	BK7A	λ/10
WI-3809B	PW-3809B	1.50	0.375″	BK7A	λ/10
WI-5005B	PW-5005B	2.00	5.0mm	BK7A	λ/10
WI-5006B	PW-5006B	2.00	0.250″	BK7A	λ/10
WI-5009B	PW-5009B	2.00	0.375″	BK7A	λ/10
WI-7612B	PW-7612B	3.00	0.500″	BK7A	λ/10
WI-1206B	PW-1206B	0.50	0.250″	UV F.S.	λ/10
WI-1906B	PW-1906B	0.75	0.250″	UV F.S.	λ/10
WI-1909B	PW-1909B	0.75	0.375″	UV F.S.	λ/10
WI-2505B	PW-2505B	1.00	1.5mm	UV F.S.	λ/10
WI-2506B	PW-2506B	1.00	5.0mm	UV F.S.	λ/10
WI-2509B	PW-2509B	1.00	0.250″	UV F.S.	λ/10
WI-3809B	PW-3809B	1.50	0.375″	UV F.S.	λ/10
WI-5005B	PW-5005B	2.00	0.375″	UV F.S.	λ/10
WI-5006B	PW-5006B	2.00	0.375″	UV F.S.	λ/10
WI-5009B	PW-5009B	2.00	10.0mm	UV F.S.	λ/10
WI-7612B	PW-7612B	3.00	0.500″	UV F.S.	λ/10
WI-2502S	PW-2502S	1.00	1.5mm	Sapphire(40/20)	λ/2

Specifications

Surface Flatness:	See table--measured@ 633nm
Surface Quality	<10/5(both sides) Parallelism
WI:	≤3 arcmin
PW:	≤10 arcsec
Diameter Tolerance	<+0.00/-0.20mm
Thickness Tolerance	<±0.25mm
Clear Aperture	≥85% of diameter
Bevel	0.3mm(typical)*45°