Objective Correction Collars; Correction Collar - Olimpus CKX41 Instruction Manual

4-5 Objective Correction Collars

16
@
²
Fig. 20
1

Correction Collar

}A culture microscope is designed to observe specimens contained in
vessels of various bottom thickness values. In order to achieve optimum
objective performance of the culture microscope, the LUCPlanFLN20X,
40X, 60X, etc. are provided with a correction collar @.
The correction is possible according to the vessel thickness.
1. If the thickness of the vessel bottom is known: Match the correction collar
to the thickness of the vessel bottom using the collar scale ² provided.
2. If the thickness of the vessel bottom is unknown:
The optimum position for the correction collar can be obtained from the
image resolution. If a satisfactory sharp image is not obtained after focus
adjustment, rotate the correction collar to the left and right so that you
can compare the images at both sides. Reset the collar to the better
image, then starting from this position, further rotate the collar to the left and
right until both images can be obtained for comparison. By repeating this
procedure several times, you will find best position for the correction collar.
Refocus after rotating the correction collar.
(Fig. 20)