Magnifications / Fields Of View - Zeiss OPMI 1 FC Instructions For Use Manual

Magnifications / Fields of view
Using the magnification factor, which can be
read in magnification window (8), page 13, you
can calculate the total magnification of the micro-
scope.
It
tube is the focal length of the binocular tube,
fog) is the focal length of the main objective,
is the factor set on the zoom system,
Meye is the magnification of the eyepiece,
then the total magnification of the surgical micro-
scope can be calculated according to:
fubo
fobj
Mr
cv Mayo
Example:
fube= 170 mm, føj = 200 mm, y = 1.6 and
Moye = 10x.
16301003 opwe1FC Sugea сиси 1097-02-28
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The total magnification is thus:
170
200
If total magnification My of the surgical micro-
scope is known, the field of view diameter
(FoVp), i.e. the circular area of the surgical field
which can be seen through the microscope when
used properly, can be calculated according to:
Mr =
Fovo = oV Moe
Mr
FoVy in the above formula stands for the field-of-
view number, which is marked on our widefield
eyepieces.
Using Mr = 13.6 from the example above, the
field-of-view diameter is thus:
22 тт-10
FoVo=ーーーーーー = 16.2 mm
13,6