Focus Technology is dedicated to manufacturing
high precision optical mirror from prototype to production. Ten years of experience
in lens manufacturing and an army of the best trained and highly skilled work
forces make Focus Technology much more professional and maintain
competitive edge.
Focus Technology offers laser quality mirror substrates at the lowest price. Our most commonly requested substrate materials are BK7, UV Fused Silica
Material: |
BK7 Grade A Optical Glass |
Typical Diameter (Φmm) |
8.0, 10.0, 12.7, 15.0, 20.0, 25.4, 30.0, 50.8 |
Typical Thickness (mm) |
2.0, 3.5, 5.0, 6.5 |
Diameter Tolerance (mm) |
+/-0.2 (General), +0.0/-0.02 (High Precision) |
Thickness Tolerance (mm) |
±0.2 (General), ±0.05 (High Precision) |
Clear Aperture |
>80% (Small Size), >95% (Large Size) |
Parallelism |
6 min. (General), 3 sec. (High Precision) |
Surface Quality |
80/50 (General), 10/5 (High Precision) |
Flatness (per 25mm@633nm) |
λ(General), λ/10 (High Precision) |
Bevel (face width x 450) |
<0.25mm |
Coating |
Uncoated, HR, PR, Ag, Al, Au Coating, etc. |