Lighting control

Does anyone have any design plans to share for self-shuttering
viewer-activated exhibition frames or cases for flat artworks? This
is for consideration for travelling exhibition to sites where light
levels cannot be guaranteed below 50 lux. Ideally, the mechanism for
a self-closing curtain or lid would be self-contained, low-tech,
non-electrified, extremely reliable, discreet in profile, and as
easy to install as a typical frame/case. Simple exterior curtains
are not ideal as there is no guarantee that the curtain would be
closed completely and continuously at all sites. Direct replies or
references email are welcome.

Nora S. Lockshin
Paper Conservator
Smithsonian Institution Archives and Center for Archives
    Conservation


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                  Conservation DistList Instance 19:49
                  Distributed: Saturday, April 8, 2006
                       Message Id: cdl-19-49-010
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