52
Maintenance / Further information
G-30-1292-en
OPMI® PRO magis Surgical Microscope
Issue 3.0
Printed on 30. 07. 2001
Magnifications / Fields of view
If the magnification factor
γ
of the zoom system is known, you can calcu-
late the total magnification of the surgical microscope. The following
equation is used to determine the total magnification:
where:
f
tube
the focal length of the binocular tube
f
obj
the focal length of the main objective lens
γ
the magnification factor of the zoom system
M
eye
the magnification of the eyepiece
Example:
f
tube
= 170 mm, f
obj
= 200 mm,
γ
= 1.6 and M
eye
= 12.5 x.
The resulting total magnification is:
If the total magnification of the surgical microscope M
T
is known, you can
use the formula:
to calculate the field of view diameter FoV
D
of the surgical microscope.
The field of view diameter is the diameter of the circular surgical field
which can be seen through the eyepieces.
FoVN in the above formula stands for the field of view number of the eye-
piece.
By entering the value MT = 17.0 in the formula, we obtain the following
field of view diameter for 12.5x eyepieces with a field of view number
FoVN of 18 mm:
M
T
f
tube
f
obj
-----------
γ
M
eye
⋅ ⋅
=
M
T
170 mm
200 mm
---------------------
1.6 12.5
17.0
=
⋅
⋅
=
FoV
D
FoVN M
eye
⋅
M
T
---------------------------------
=
FoV
D
18 mm 12.5
⋅
17.0
----------------------------------
13.2 mm
=
=
Содержание OPMI PRO magis
Страница 1: ...OPMI PRO magis Surgical Microscope Instructions for use G 30 1292 en Issue 3 0 Printed on 30 07 2001...
Страница 2: ......
Страница 15: ...G 30 1292 en OPMI PRO magis Surgical Microscope Issue 3 0 Printed on 30 07 2001 Safety 15...
Страница 16: ...16 Safety G 30 1292 en OPMI PRO magis Surgical Microscope Issue 3 0 Printed on 30 07 2001...
Страница 19: ...G 30 1292 en OPMI PRO magis Surgical Microscope Issue 3 0 Printed on 30 07 2001 Description 19...
Страница 27: ...G 30 1292 en OPMI PRO magis Surgical Microscope Issue 3 0 Printed on 30 07 2001 Description 27 1 2 3...
Страница 29: ...G 30 1292 en OPMI PRO magis Surgical Microscope Issue 3 0 Printed on 30 07 2001 Description 29 1 2 3...
Страница 30: ...30 Description G 30 1292 en OPMI PRO magis Surgical Microscope Issue 3 0 Printed on 30 07 2001...
Страница 34: ...34 Preparations for use G 30 1292 en OPMI PRO magis Surgical Microscope Issue 3 0 Printed on 30 07 2001...
Страница 37: ...G 30 1292 en OPMI PRO magis Surgical Microscope Issue 3 0 Printed on 30 07 2001 Operation 37 1 2 3 4...
Страница 39: ...G 30 1292 en OPMI PRO magis Surgical Microscope Issue 3 0 Printed on 30 07 2001 Operation 39 1 2 3 4...
Страница 40: ...40 Operation G 30 1292 en OPMI PRO magis Surgical Microscope Issue 3 0 Printed on 30 07 2001...
Страница 43: ...G 30 1292 en OPMI PRO magis Surgical Microscope Issue 3 0 Printed on 30 07 2001 Operation 43 3 4 5 1 2...
Страница 62: ...62 Index G 30 1292 en OPMI PRO magis Surgical Microscope Issue 3 0 Printed on 30 07 2001...
Страница 63: ...G 30 1292 en OPMI PRO magis Surgical Microscope Issue 3 0 Printed on 30 07 2001 63...