[PSUBS-MAILIST] Acrylic View Ports vs. long-wave UV-Light

["Jens Laland" <laland@artematrix.org>]

During talks between David Bartsch and myself, we have been addressing the
use of long-wave ultraviolet light for illumination of various instruments
and/or instrumentation panels that has previously been marked by use of
phosphorescent pigments. This to maintain proper night vision, etc.

ILLUMINATION ALTERNATIVE #1:

This alternative represents the use of one or two strong, central
source(s) of UV-light placed above (and slightly behind) the pilot, but in
such a manner that sufficient light still reach the entire area of
interest on the control panel in front.

ILLUMINATION ALTERNATIVE #2:

This alternative represents a method where each part of a control panel
has been furnished with it's own local, shaded "eyebrow" type of UV-lamp.

QUESTION REGARDING ALTERNATIVE #1:

Has an acrylic (or similar type of) viewport being given a proper UV
protection ( coating ? ) that would also make it resistant against UV
light coming from the inside?

QUESTION REGARDING ALTERNATIVE #2:

Would it be correct to assume that if we restricted all use of ultraviolet
light to the deployment of eyebrow lamps placed along the upper brim of
each instrument (in the sub), then this practice would not be in any
conflict with what would be best for the physical health of any viewport?

Best regards,
Jens laland




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