Optics. A: Objective lens; B: Field lens (dia=28mm, f=51mm); C: Eyepiece lens (dia=16mm, f=28mm). Length of the body tube is 19cm.
Objectives are single, bi-convex lenses set into a brass mount. The small aperture for all objectives reduces spherical aberration. This objective is typical of the five that came with the Sterrop instrument.
The assembled microscope body fits into this support arm.
|
Designation
|
f (mm)
|
dia (mm)
|
|
1
|
3
|
1.5
|
|
(missing)
|
NA
|
NA
|
|
3
|
12
|
3
|
|
4
|
16
|
4
|
|
5
|
20
|
5
|
|
6
|
35
|
6
|
Eyepiece assembly showing the sliding dust cap.
Field lens assembly