Agilent Technologies 86038B User Manual page 316

How to clean lenses and instruments with an optical glass plate
C A U T I O N
316
2 Clean the adapter by rubbing a new, dry cotton swab over the
surface using a small circular movement.
3 Blow away any remaining lint with compressed air.
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, Agilent's optical heads have an optical glass plate to
protect the sensor.
Do not attempt to access the internal parts of an Agilent
N3988A video 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 Agilent 8162*A optical head, 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 into the receptacle. Particles on the optical head's front
window can significantly impair measurement results.
N O T E Do not dry the lens by rubbing with with cloth or other material,
which may scratch the lens surface.
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.
Procedure for Stubborn Dirt
Use this procedure when there is greasy dirt on the lens:
1 Moisten a new cotton swab with isopropyl alcohol.
2 Clean the lens by rubbing the cotton swab over the surface
using a small circular movement.
3 Using a new, dry cotton swab remove the alcohol, any
dissolved sediment and dust.
Agilent 86038B Photonic Dispersion and Loss Analyzer, Second Edition