|
|
|
| Substrates / BK7 Glass Substrate |
| BK7 is a borosilicate crown optical glass with high homogeneity, low bubble and inclusion content. Its good physical and chemical properties make it widely used in visible and near IR range. Most of windows, lenses and prisms, which used in laser, optical system, optical communication, are made from BK7 glass. |
| |
| Material |
BK7 Optical Glass |
| Transmission |
330 nm - 2100 nm
 |
| DiameterLength or Width |
2.00-300.00mm +/-0.05mm (or per request) |
| Thickness |
>330um +/-50um |
| Polish |
Single Surface Fine Polished, the other surface lappedDouble Surface Fine Polished |
| Surface Quality |
10-5 Scratch and Dig per MIL-O-13830A (or per request) |
| Flatness |
Lambda/10 per 1-Inch Area (or per request) |
| Parallelism |
better than 20" |
| Bevel |
0.05mm x 45-Deg |
| Thermal Expansion Coefficient |
7.5 x 10-6 /K |
| Density |
2.51 g/cm3 |
| Packaging |
Vacuum Package with Dessicant As Shown Below |
|
| |
|
| |
 |
| |
|
