COE Optics offers all kinds of windows, i.e, Sapphire Windows, Optical Windows, Fused Silica Windows, Silicon Windows, Germanium Windows, IR Windows, UV Windows, Magnesium Fluride Windows, Calcium Fluride Windows, Laser Windows & Borosilicate Glass which are made from different material, such as BK7, fused silica, sapphire, Germanium (Ge), Silicon (Si) etc. Enquire now at sales@coeoptics.com.
| Attribute | Specification |
| Material | H-K9L/BK7 |
| Index of Refraction nd: | 1.516 |
| Abbe Number (vd): | 64.17 |
| Density (g/cm3): | 2.51 |
| Coefficient of Thermal Expansion CTE (10-6/°C): | 7.1 |
| Knoop Hardness (GPa): | 610 |
| Young's Modulus (GPa): | 82 |
| Poisson's Ratio: | 0.206 |
| Diameter (Φmm) | 1.0~400.00 |
| Thickness (mm) | ≥0.1 |
| Diameter Tolerance (mm) | ±0.05 |
| Thickness Tolerance (mm) | ±0.02 |
| Clear Aperture | >95% |
| Parallelism | 10 sec. |
| Surface Quality | 80/50~10/5 |
| Flatness (per 25mm@633nm) | 1λ~λ/10@any 25.4mm area |
| Bevel (face width x 45°) | <0.25mm |
We have lots of BK7 windows in our stock and pls check with our sales for details.
Stocking List
BK7 windows Ø1.5*0.5mm
BK7 windows Ø6*2mm
BK7 windows Ø9*3mm
BK7 windows Ø10.5*0.5mm
BK7 windows Ø15.7*1.016mm
BK7 windows Ø16*1mm
BK7 windows Ø19.05*1.5m BK7 windows Ø20*1mm
BK7 windows Ø25.4*3.175mm
BK7 windows Ø30*3mm
BK7 windows Ø35.05*2.032mm
BK7 windows Ø40*2mm
BK7 windows Ø50.8*3.15mm
BK7 windows Ø49*2.5m
BK7 windows Ø57*6mm
BK7 windows Ø63.05*6.35mm
BK7 windows Ø75*4mm
BK7 windows Ø80*3mm
BK7 windows Ø100*20mm
BK7 windows Ø115.14*3.15mm
BK7 windows Ø120*25m
BK7 windows Ø150*6mm
BK7 windows Ø250*5mm
BK7 windows 280*280*4mm
BK7 windows 15*15*1mm
BK7 windows 48*46*4mm
BK7 windows 87*27*1mm
BK7 windows 120*20*30
Contact us
Hotline: +8625 8361 6456
Add： No1001 Fuying Rd(Union East U-Valley #19 building),Jiangning District,Nanjing 211100,P.R.China
Tel：+86 25 83616456 Ext. 8008
Contact person：Rena Jin
Email：sales@coeoptics.com
