|
|
| Radiator
with multiple |
|
| refractive
indices |
|
|
|
| How to
increase the number of photons |
|
| without
degrading the resolution? |
|
| normal |
|
|
|
| • | measure two separate rings |
|
| “defocusing” configuration |
||
|
|
|
| • | measure overlaping rings |
|
| “focusing” configuration |
||
