BK7 Window

BK7 Windows

Specifications
Material:	BK7 grade A glass
Diameter Tolerance:	+0.0/-0.1 mm
Thickness Tolerance:	± 0.1 mm
Parallelism:	± 0.5 arc minute
Clear Aperture:	> 90% central
Chamfer:	< 0.25 mm at 45^o
Antireflection Coating:	single layer, multi-layer, customer specified

Part No.	Diameter	Thickness	Surface Quality	Surface Flatness
BKW0002	3.0 mm	1.0 mm	10-5	l/20
BKW0007	3.5 mm	1.0 mm	10-5	l/20
BKW0011	4.0 mm	1.0 mm	10-5	l/20
BKW0017	4.5 mm	1.2 mm	10-5	l/20
BKW0026	5.0 mm	1.0 mm	10-5	l/20
BKW0031	5.0 mm	1.5 mm	10-5	l/20
BKW0037	5.0 mm	2.0 mm	10-5	l/20
BKW0060	6.0 mm	1.0 mm	10-5	l/10
BKW0063	6.0 mm	1.5 mm	10-5	l/10
BKW0067	6.0 mm	2.0 mm	10-5	l/10
BKW0069	6.0 mm	2.5 mm	10-5	l/10
BKW0072	6.0 mm	3.0 mm	10-5	l/10
BKW0085	6.35 mm	1.5 mm	10-5	l/10
BKW0089	6.35 mm	2.0 mm	10-5	l/10
BKW0096	6.35 mm	2.5 mm	10-5	l/10
BKW0100	6.35 mm	3.0 mm	10-5	l/10
BKW0135	8.0 mm	1.5 mm	10-5	l/10
BKW0142	8.0 mm	2.5 mm	10-5	l/10
BKW0146	8.0 mm	3.0 mm	10-5	l/10
BKW0150	8.0 mm	4.0 mm	10-5	l/10
BKW0205	10.0 mm	2.0 mm	10-5	l/10
BKW0210	10.0 mm	3.0 mm	10-5	l/10
BKW0215	10.0 mm	3.5 mm	10-5	l/10
BKW0222	10.0 mm	4.0 mm	10-5	l/10
BKW0267	12.7 mm	2.0 mm	10-5	l/10
BKW0270	12.7 mm	2.5 mm	10-5	l/10
BKW0272	12.7 mm	3.0 mm	10-5	l/10
BKW0276	12.7 mm	4.0 mm	10-5	l/10
BKW0279	12.7 mm	5.0 mm	10-5	l/10
BKW0298	15.0 mm	2.0 mm	10-5	l/10
BKW0303	15.0 mm	3.5 mm	10-5	l/10
BKW0310	15.0 mm	6.0 mm	10-5	l/10
BKW0356	18.0 mm	3.0 mm	10-5	l/10
BKW0366	18.0 mm	6.0 mm	10-5	l/10
BKW0512	25.4 mm	3.0 mm	10-5	l/10
BKW0518	25.4 mm	4.0 mm	10-5	l/10
BKW0523	25.4 mm	5.0 mm	10-5	l/10
BKW0530	25.4 mm	6.0 mm	10-5	l/10
BKW0802	38.1 mm	3.0 mm	20-10	l/5
BKW0806	38.1 mm	4.0 mm	20-10	l/5
BKW0810	38.1 mm	5.0 mm	20-10	l/5
BKW0820	38.1 mm	8.0 mm	20-10	l/5
BKW1103	50.8 mm	5.0 mm	20-10	l/4
BKW1107	50.8 mm	6.0 mm	20-10	l/4
BKW1115	50.8 mm	7.5 mm	20-10	l/4

Your special designs of windows are very welcome. Please contact us at sales@wintoptics.com

California Office Phone: 408-823-9419 Fax: 408-689-8038
5525 Hirsch Drive, Elk Grove, CA 95758