User`s guide

Cleaning Information Additional Cleaning Information
106 Agilent 81618A/9A and Agilent 81623B/4B/6B/8B Optical Heads, Fourth Edition
How to clean large area lenses and mirrors
Some mirrors, as those from a monochromator, are very soft and sensitive.
Therefore, never touch them and do not use cleaning tools such as
compressed air or polymer film.
Some lenses have special coatings that are sensitive to solvents, grease,
liquid and mechanical abrasion. Take extra care when cleaning lenses with
these coatings.
Lens assemblies consisting of several lenses are not normally sealed.
Therefore, use as little liquid as possible, as it can get between the lenses
and in doing so can change the properties of projection.
Preferred Procedure
Use the following procedure on most occasions.
1 Blow away any dust or dirt with compressed air.
Procedure for Stubborn Dirt
Use this procedure when there is greasy dirt on the lens:
1 Moisten the lens or the mirror with water.
2 Put a little liquid soap on the surface and gently spread the liquid over
the whole area.
Only use water if you are sure that there is no other way of cleaning
your optical device without causing corrosion or damage.
Only use water if you are sure that there is no other way of cleaning
your optical device without causing corrosion or damage. Do not use
hot water, as this may cause mechanical stress, which can damage
your optical device.
Ensure that your liquid soap has no abrasive properties or perfume
in it. You should also avoid normal washing up liquid, as it can cover
your device in an iridescent film after it has been air dried.
Some lenses and mirrors also have a special coating, which may be
sensitive to mechanical stress, or to fat and liquids. For this reason
we recommend you do not touch them.
If you are not sure how sensitive your device is to cleaning, please
contact the manufacturer or your sales distributor.
CAUTION