Cover Glass Spherical Aberration calculator
Primary spherical aberration of a cover-glass thickness error, dry objective (NA in air), third order.
Category: Aberrations
Formula: WSA ≈ (n²−1)/(8n³) · NA⁴ · Δt
Inputs
| Input | Parameter | Unit | Default |
|---|---|---|---|
| Index n | n | 1.515 | |
| NA (air) | NA | 0.95 | |
| Δ thickness | dt | µm | 10 |
| λ | lam | nm | 550 |
Result with the default inputs
- Wavefront error: 379.2379 nm
- In waves: 0.6895
Open it with your own values: put each input in the address as a parameter, for example /calculators/cover-glass-spherical-aberration?n=1.515. A unit other than the listed one goes in <parameter>_unit.
Read more: Wikipedia: Spherical aberration