|
Lens
|
Dia (cm)
|
f (cm)
|
Aperture (cm)
|
| Eyepiece |
2.0
|
3.0
|
NA
|
| Field lens |
3.8
|
8.0
|
1.5
|
| Objective, Low |
0.7
|
0.5
|
0.1
|
| Objective, high |
0.7
|
0.3
|
0.1
|
This microscope has the typical three-lens optical configuration:
A: Objective
B: Field lens
D: Eyepiece.
All are single bi-convex lenses. The body tube is constructed completely of wood (Lignum vitae). The upper tube is covered in black shagreen.
The eyepiece lens sits in a groove in the Lignum vitae body, and is held in place by a wooden retaining ring. Topping the body is an ornate Lignum vitae dust cap.
The two objectives have a Lignum vitae base, on which the single bi-convex objective lens sits. The lens is retained by a screw-on brass cover. Note the aperture diameter compared to the diameter of the objective lens.
There are two removable objectives with Microscope 116. Left is the "high power" objective; Right is "low power".