Items |
Specifications |
Material |
BK7 Grade A or equivalent Optical Glass |
Designed Wavelength |
546.1 nm |
Designed Index |
1.5183 ¡À0.0005 |
Dimension Tolerance |
+0.0/-0.2 mm |
Thickness Tolerance |
¡À 0.2 mm |
Paraxial Focal Length |
¡À 2% |
Clear Aperture |
> 90% |
Centration |
3 arc minutes |
Flatness |
¦Ë/4 at 632.8 nm |
Surface Quality |
scratch and dig 60-40 |
Bevel |
0.5 (0/-0.3) mm |
Notes:
1. Material, besides BK7, fused silica and any other materials are available.
2. Surface Quality could reach 40-20 or 20-10
3. Centration such as 1¡¯, 30¡± is available.
4. Please show us the size and the coating specification. |