Use Of Additional Lens (Szb260/Szt260) - VWR VisiScope 260 Serie Manual De Instrucciones

9.6

Use of additional lens (SZB260/SZT260)

Screw the desired additional lens on the microscope
body. (Fig. 14)
Each additional lens has a specific Working Distance
(see table below).
The stroke of the focus adapter could not compen-
sate the different working distances of the several
additonal lenses.
Total magnification used can be calculated as:
Eyepiece magnification * Zoom magnification * Objective lens magnification.
Eyepiece
Field number
Objective Total mag.
0,5X (W.D.165 mm) 3.5X-22.5X
0.75X (W.D. 114 mm) 5.25X-33.75X
1X (W.D. 100 mm)
1.5X (W.D. 47 mm) 10.50X-67.5X
9.6.1 Use of 0.5X additional lens
0.5X additional lens has a Working Distance of 165
mm and therefore the total stroke of the focus pillar
cannot compensate.
In order to let the 0.5X additional lens working pro-
perly, proceed as follows:
1. Screw the additional lens on the microscope body
as already described in chapter 8.6.
2. Uninstall the microscope body from the head hol-
der.
3. Install the provided spacer ① in the head holder
and screw the fixing knob ②.(Fig. 15)
4. Re-install the microscope body onto the spacer
and screw the fixing knob ③.(Fig. 16)
5. Begin working normally.
10X
21
F.O.V. (mm)
59.99-9.32
40-6.21
7X-45X 29.99-4.66
20-3.10
15X
15
Total mag. F.O.V. (mm)
5.25X-33.75X 28.57-4.44
7.87X-50.62X 19.06-2.96
10.5X-67.5X 10.95-2.22
15.75X-101.25X 9.52-1.48
①
②
10
Fig. 14
20X
10
Total mag. F.O.V. (mm)
7X-45X 14.28-2.22
10.50X-67.5X 9.52-1.48
14X-90X 7.14-1.11
21X-135X 4.76-0.74
Fig. 15
③
Fig. 16