η | Magnifying Glass | Fresnel Corrector | Eyepiece’s length/m | |||
Diameter/m | F-number | p | F-number | Rim feature size/μm | ||
0.005 | 25 | 100 | 1 | 0.5 | 1 | <1.2 |
0.01 | 25 | 100 | 1 | 1 | 2 | <3.3 |
0.02 | 25 | 100 | 1 | 2 | 4 | <9 |