Glass Windows

• High quality optical glass Economical
• Suitable for anti-reflection coating

· Suitable for anti-reflection coating

These superior glass windows are made from the best quality BK7. This material is very homogeneous and free from internal defects. The windows are precision polished on both surfaces and held parallel to 3arcmin. l/10 transmitted wavefront distortion is usually preferred but l/4 is offered as an option when this is not an issue. Anti-reflection coatings can be applied to these windows for a small additional cost (see pages 6 and 7).

Specifications & Tolerances 

Material:	BK7 grade A optical glass
Refractive index:	1.52 @500nm
Diameter:	+0, -0.2mm
Thickness:	±0.2mm
Surface flatness:	/10 or /4
Surface quality:	40-20
Parallelism:	<5arcsec or 3arcmin
Bevel:	0.2mmx45° typical

We have a very large assortment of uncoated plano-plano glass and fused silica substrates that are ideal for many window applications. If you don't see the exact size or shape of window that you need, please let us know. And if you have OEM window requirements, we can provide you with a very competitive quotation and reliable delivery performance.

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Glass Windows, Circular

Glass Windows, Square and Rectangle

Dimensions		Thickness, t (mm)	Wavefront Tolerance	Price	Availability	Product Number
(inches) a x b	(mm) a x b
0.39 x 0.78	10.0 x 20.0	5.0	/10		from stock	044-1140
0.59 x 1.18	15.0 x 30.0	5.0	/10		from stock	044-1150
0.78 x 1.38	20.0 x 35.0	5.0	/10		from stock	044-1160
0.98 x 0.98	25.0 x 25.0	5.0	/10		from stock	044-1110
0.98 x 1.57	25.0 x 40.0	6.0	/10		from stock	044-1170
1.18 x 1.97	30.0 x 50.0	8.0	/10		from stock	044-1180
1.97 x 1.97	50.0 x 50.0	8.0	/10		from stock	044-1120
3.15 x 3.15	80.0 x 80.0	12.0	/10		from stock	044-1130

For broadband anti-reflection coatings on both faces append -A55 to product number. Allow an extra week for availability Special shapes can be produced on request.

				Flatness & Parallelism /10 5arcsec		Flatness & Parallelism /4 3arcmin
Diameter, D		Thickness, t (mm)	Availability	Price	Product Number	Price	Product Number
(inches)	(mm)
0.39	10.0	3.0	from stock		044-1210		044-0119
0.50	12.7	3.0	from stock		044-1220		044-0121
0.50	12.7	5.0	from stock		044-1230		044-0122
0.59	15.0	3.0	<1.5 weeks		044-1240		044-0123
0.59	15.0	5.0	<1.5 weeks		044-1250		044-0124
-	-	-	-		-		-
0.75	19.1	3.0	from stock		044-1260		044-0126
0.75	19.1	5.0	from stock		044-1270		044-0127
0.79	20.0	2.0	from stock		-		044-0125
0.79	20.0	3.0	<1.5 weeks		044-1280		044-0128
0.79	20.0	5.0	<1.5 weeks		044-1290		044-0129
-	-	-	-		-		-
0.98	25.0	2.0	<1.5 weeks		-		044-0133
0.98	25.0	3.0	<1.5 weeks		044-1300		044-0130
0.98	25.0	5.0	<1.5 weeks		044-1310		044-0135
1.00	25.4	3.0	from stock		044-1320		044-0140
1.00	25.4	5.0	from stock		044-1330		044-0145
-	-	-	-		-		-
1.18	30.0	3.0	from stock		044-1340		044-0150
1.18	30.0	5.0	<1.5 weeks		044-1350		044-0153
1.50	38.1	4.0	from stock		044-1360		044-0155
1.50	38.1	6.0	from stock		044-1370		044-0157
1.57	40.0	4.0	<1.5 weeks		044-1380		044-0160
-	-	-	-		-		-
1.57	40.0	6.0	<1.5 weeks		044-1390		044-0163
1.97	50.0	5.0	<1.5 weeks		044-1400		044-0170
1.97	50.0	8.0	<1.5 weeks		044-1410		044-0173
2.00	50.8	5.0	from stock		044-1420		044-0175
2.00	50.8	8.0	from stock		044-1430		044-0177
-	-	-	-		-		-
3.00	76.2	8.0	from stock		044-1440		044-0180
3.00	76.2	12.0	from stock		044-1450		044-0183
3.15	80.0	8.0	<1.5 weeks		044-1460		044-0190
3.15	80.0	12.0	<1.5 weeks		044-1470		044-0193
3.94	100.0	10.0	<1.5 weeks		044-1480		044-0220
3.94	100.0	15.0	<1.5 weeks		044-1490		044-0223

For broadband anti-reflection coatings on both faces append -A55 to product number. Allow an extra week for availability Special shapes can be produced on request.

Merci de contacter Infos Photon Lines pour tout renseignement complémentaire.

Photon Lines
55 avenue Auguste renoir

BP51

78160 Marly-le-Roi France

Tel: 0033 (0)1 30 08 99 00
Fax: 0033 (0)1 30 08 99 09

Website: www.photonlines.com

E-mail: infos@photonlines.com