Cleaning The Mirror; Procedure - THORLABS Vytran GPX3400 User Manual

GPX3400 and GPX3600 Glass Processors
6.5.

Cleaning the Mirror

The fiber image is distorted by debris that accumulates on the mirror surfaces. This debris may be dust from the
atmosphere, small pieces of fiber coating, finger prints, etc. Care must be taken when cleaning the mirror
surfaces, as they are all silver-coated on the front surface. If it is possible to visibly discern debris on the fiber
image or if the system is unable to focus the image, then the mirrors should be cleaned.

6.5.1. Procedure

Move the lens assembly to the home position.
Move the fiber holding blocks to the home position.
View each mirror surface using a 10x eye loupe (Item # EYL10X).
Remove debris using a clean cotton swab and a commercial lens cleaner. Please note that the mirrors
are silver-coated on the front surface. Never use a cotton swab that has been laying on the work surface;
dust particles on a used cotton swab will scratch the mirror.
Wipe the mirror surface in a single direction, rotating the swab to lift debris away from the mirror surface.
Do not reuse the cotton swab.
View the mirror through the eye loupe. Re-clean the mirror if necessary.
Repeat for all mirror surfaces as required.
Figure 32 Use a clean cotton swab and lens cleaner to remove debris from the mirror surface
Rev B, July 24, 2017
Chapter 6: Maintenence
Page 53