Equilateral Prisms (EQP)
Dispersing prisms
- 60°angles
Equilateral prisms are normally used as dispersing prisms. As well as standard BK7 prisms, higher index. SF2 and F2 prisms are offered to increase the dispersive power.
Material: |
BK7A, SF10 or F2 |
Surface Flatness: |
< λ / 8 @ 633 nm |
Surface Quality: |
<20 / 10 (for BK7A) <40 / 20 (for SF10 & F2) |
Dimension Tolerance: |
< + 0.00 / – 0.20 mm |
Angular Deviation |
<3 arc sec |
Clear Aperture: |
>85% in central circular dimension |
Bevel: |
0.3 mm (typical) x 45° |
Equilateral Prisms (EQP)