Substrate Material: |
BK7 Glass (Barium Borosilicate glass, known for its high transmission and clean, clear appearance. It is a standard by which many other glasses are compared, both optical and non-optical types) |
Outer Diameter: |
DIA: 120.0, -0.2/0.0mm |
Thickness: |
13.0, +/-0.2mm |
Surface Quality: |
Double side polished (60-40 scratch and dig, MIL Standard); Imaging grade |
Flatness(Double-Surface): |
<Lambda/4 @ 632.8nm over 1-inch area on-jig tested |
Parallelism: |
<3 arc minutes |
Chamfer: |
0.5mm x 45deg |
Minimum of Qty: |
MOQ=20pcs/each order | |