BK7 Window

BK7 Windows

Specifications
Material:	BK7 grade A glass
Diameter:	We offer standard round windows with diameter from 5.0mm to 100mm. Some are listed below.
Thickness:	from 1.0~10.0mm
Surface Flatness:	best finish l/10 depends on the size
Surface Quality:	from 60/40 to 10/5 depends on the size
Parallelism:	± 3 arc seconds to 5 arc minutes
Clear Aperture:	> 90%~95% central
Chamfer:	< 0.25~0.5 mm at 45^o
Antireflection Coating:	single layer, multi-layer broadband, customer specified

Part No.	Diameter	Thickness	Surface Quality	Surface Flatness
BKW0026	5.0 mm	1.0 mm	10-5	l/2
BKW0031	5.0 mm	1.5 mm	10-5	l/2
BKW0037	5.0 mm	2.0 mm	10-5	l/4
BKW0060	6.0 mm	1.0 mm	10-5	l/2
BKW0067	6.0 mm	2.0 mm	10-5	l/4
BKW0072	6.0 mm	3.0 mm	10-5	l/4
BKW0085	6.35 mm	1.5 mm	10-5	l/2
BKW0089	6.35 mm	2.0 mm	10-5	l/4
BKW0096	6.35 mm	2.5 mm	10-5	l/4
BKW0100	6.35 mm	3.0 mm	10-5	l/10
BKW0135	8.0 mm	1.5 mm	10-5	l/2
BKW0142	8.0 mm	2.5 mm	10-5	l/4
BKW0146	8.0 mm	3.0 mm	10-5	l/4
BKW0150	8.0 mm	4.0 mm	10-5	l/10
BKW0179	9.0 mm	2.0 mm	10-5	l/4
BKW0186	9.0 mm	3.0 mm	20-10	l/4
BKW0205	10.0 mm	2.0 mm	10-5	l/4
BKW0210	10.0 mm	3.0 mm	10-5	l/4
BKW0215	10.0 mm	3.5 mm	10-5	l/10
BKW0222	10.0 mm	4.0 mm	10-5	l/10
BKW0265	12.7 mm	2.0 mm	40-20	l/4
BKW0267	12.7 mm	2.0 mm	10-5	l/4
BKW0269	12.7 mm	2.5 mm	40-20	l/4
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
BKW0286	13.5 mm	2.0 mm	10-5	l/4
BKW0288	13.5 mm	3.0 mm	20-10	l/4
BKW0298	15.0 mm	2.0 mm	10-5	l/4
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/4
BKW0366	18.0 mm	6.0 mm	10-5	l/10
BKW0396	21.5 mm	3.0 mm	40-20	l/4
BKW0402	21.5 mm	4.0 mm	40-20	l/4
BKW0478	25.0 mm	2.0 mm	40-20	l/4
BKW0480	25.0 mm	3.0 mm	40-20	l/4
BKW0484	25.0 mm	4.0 mm	40-20	l/4
BKW0487	25.0 mm	5.0 mm	20-10	l/5
BKW0511	25.4 mm	2.0 mm	40-20	l/4
BKW0517	25.4 mm	4.0 mm	40-20	l/4
BKW0523	25.4 mm	5.0 mm	20-10	l/5
BKW0530	25.4 mm	6.0 mm	20-10	l/5
BKW0550	27.5 mm	3.0 mm	40-20	l/4
BKW0553	27.5 mm	4.0 mm	40-20	l/4
BKW0558	27.5 mm	5.0 mm	40-20	l/4
BKW0562	27.5 mm	6.0 mm	40-20	l/5
BKW0592	30.0 mm	3.0 mm	40-20	l/4
BKW0595	30.0 mm	4.0 mm	40-20	l/4
BKW0599	30.0 mm	5.0 mm	40-20	l/4
BKW0603	30.0 mm	6.0 mm	40-20	l/5
BKW0641	32.5 mm	3.0 mm	40-20	l/4
BKW0645	32.5 mm	4.0 mm	60-40	l/4
BKW0711	34.5 mm	3.0 mm	40-20	l/4
BKW0717	34.5 mm	4.0 mm	60-40	l/4
BKW0802	38.1 mm	3.0 mm	40-20	l/4
BKW0806	38.1 mm	4.0 mm	40-20	l/5
BKW0810	38.1 mm	5.0 mm	40-20	l/5
BKW0820	38.1 mm	8.0 mm	40-20	l/5
BKW1103	50.8 mm	5.0 mm	40-20	l/4
BKW1107	50.8 mm	6.0 mm	40-20	l/4
BKW1115	50.8 mm	7.5 mm	40-20	l/4
BKW1323	76.2 mm	5.0 mm	60-40	l
BKW1335	76.2 mm	7.0 mm	60-40	l

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
2880 Zanker Road, Suite 203, San Jose, CA 95134