How can we help you?
+49 7461 9617-0
Office Hours Mo - Th
08:00 am - 4:00 pm
Office Hours Friday
08:00 am - 12:00 am
What kind of light-guides and under what circumstances?
The most users of the fibre light-guides have
still an opinion that the cable with a wide diameter (called
"a thick cable") is able to provide more light than a "thin"
one. It will be explained as following:
"There runs more light through a thick cable because there
are more glass fibres inside".
But this opinion is wrong and can be even grave!
The choise of the fibre light-guide depends on the aim,
you need it for. The following sketch shows that for the
thin endoscopes the thin light-guides are to use, for the
thick endoscopes thick ones.
Under "thick" we mean a light-guide with diameter of 4,9
mm, under "thin" - a light-guide with diameter of 3,5 mm.
A thin endoscope has a "thin" light entry, a thick one -
a "thick" light entry. The light-guides should correspond
to the particular endoscopes.
Please use in this case only a light-guide with the diameter of 3,5 mm
In this case a light-guide with diameter of 4,9 mm is to use
Combined sketch
For A:
Combination:
You use a thick light-guide with diameter of 4,9 mm. You
use the thin optics with diameter of 3,5 mm of light entry.
Circumstances: This combination must
be chosen in no way. The cause is the connecting piece of
the endoscopes can become very hot because the light gets
to the metal. The result is a possible overheating. Therefore
the risk arises that you distroy your endoscope like burning
out at the light entry of the endoscope. In addition a patient
can be put at risk because the end of the optic possible
becomes hot under circumstances. (Please, pay especially
attention to the light sources with high energy power).
For B:
Combination:
You use a thin light-guide with diameter of 3,5 mm.
You use the thick optics with diameter of 4,9 mm of light
entry.
Circumstances: This combination may be chosen but it is
not to be recommended because normally the light output
by laparascopy is not enough by using of a thin light-guide.
For C:
Combination:
You use a thin light-guide
with diameter of 3,5 mm. You use the thin optics with diameter
of 3,5 mm of light entry.
Circumstances: This combination is optimal, because a light-guide
corresponds to the endoscope exactly. Naturally this combination
may be also used by equal light-guide`s diameters of the
larger measurements. Please take into account that standard
and softline light-guides can be burned in the light sources
with high energy power.
