Technical data

5 Which Cleaning Procedure should I use ?
34 Cleaning Procedures
Procedure E
How to clean lenses and instruments with an
optical glass plate
Some lenses have special coatings that are
sensitive to solvents, grease, liquid and
mechanical abrasion. Take extra care when
cleaning lenses with these coatings. Some
instruments, for example, the Agilent Technol-
ogies optical heads have an optical glass plate
to protect the sensor.
In the case of the N3988A video microscope,
do not attempt to access the internal parts of
the microscope for cleaning or for any other
purpose.
Lens assemblies consisting of several lenses are not normally
sealed. Therefore, use as little alcohol as possible, as it can get
between the lenses and in doing so can change the properties
of projection.
If you are cleaning an Optical Power Head (8162*A), please
observe the following additional check. Periodically inspect the
optical head’s front window for dust and other particles. Dust
and particles can be propelled through the optical head
adapter’s pinhole while inserting a connector ferrule to the
receptacle. Particles on the optical head’s front window can
significantly impair measurement results.
Preferred Procedure
Use the following procedure on most occasions.
1 Clean the lens by rubbing a new, dry cotton swab over the
surface using a small circular movement.
2 Blow away any remaining lint with compressed air.
NOTE
Do not dry the lens by rubbing with cloth or other material,
which may scratch the lens surface.
cleaning.book Page 34 Wednesday, May 22, 2002 5:16 PM