256
System data
G-30-1682-en
OPMI® Lumera® T
Issue 4.0
Printed on 02. 02. 2009
Magnifications / Fields of view
Using the magnification factor
γ
of the zoom system, you can calculate the
total magnification of the surgical microscope according to the following
formula:
where:
f
tube
is the focal length of the binocular tube
f
obj
is the focal length of the main objective lens
γ
is the magnification factor set on the zoom system
M
eye
is 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 M
T
of the surgical microscope is known, the field-
of-view diameter FoV
D
can be calculated using the formula:
The field-of-view diameter FoV
D
is the diameter of the circular area of the
surgical field which can be seen through the eyepieces.
FoV
N
in the above formula stands for the field-of-view number of the eye-
piece. This number is marked on our widefield eyepieces.
Using M
T
= 17.0 from the example above, the field-of-view diameter ob-
tained with a 12.5x eyepiece with a field-of-view number FoV
N
of 18 mm
is calculated as follows:
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
=
=
Summary of Contents for OPMI Lumera T
Page 18: ...18 Functions at a glance G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009...
Page 31: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Safety 31...
Page 33: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Safety 33 1 1 2 3...
Page 35: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Safety 35 4 5 3 2 1...
Page 37: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Safety 37 7 1 3 2 6...
Page 39: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Safety 39 4 5 1 2 3...
Page 43: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Safety 43 1...
Page 47: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Safety 47 S88 floor stand 176164...
Page 49: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Safety 49 S8 ceiling mount 176164...
Page 50: ...50 Safety G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 S81 ceiling mount...
Page 53: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Description 53...
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Page 142: ...142 Description G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009...
Page 145: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Preparations 145 1 2 3 4 6 8 9 7 5...
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Page 185: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Operation 185 1 2...
Page 231: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Care and maintenance 231...
Page 235: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 Care and maintenance 235 3 4 5 2 1...
Page 238: ...238 Care and maintenance G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009...
Page 243: ...G 30 1682 en OPMI Lumera T Issue 4 0 Printed on 02 02 2009 System data 243...
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