Infinite optical system: semi-apo plan fluorsecent objective F=180mm
| Magnification | NA | WD(mm) | f´(mm) | R（μm） | DF(μm) |
on object （mm） |
on image
(mm) |
screw |
| 4X | 0.13 | 17.15 | 45 | 2.58 | 43.74 | 6.25 | 25 | 4/5” |
| 10X | 0.30 | 7.68 | 18 | 1.12 | 7.82 | 2.5 | 25 | 4/5” |
| 20X | 0.50 | 1.96 | 9 | 0.67 | 2.53 | 1.25 | 25 | 4/5” |
| 40X | 0.75 | 0.78 | 4.5 | 0.45 | 0.97 | 0.625 | 25 | 4/5” |
| 100X | 1.30 | 0.15 | 1.8 | 0.26 | 0.27 | 0.25 | 22.5 | 4/5” |
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