Switchable Glass - Museum

Improving the Management of Light in Museums by Manoj Phatak, C.Eng, (C) 2011 Domoticware S.L.U - In the museum sector there is a clear dilemma: the more we exhibit works of art, the more light damage they incur; conversely, reducing light levels impedes the safety and enjoyment of visitors.

How switchable glass can help to achieve it? 

When we interviewed several top museums and firms of museum architects in London and Madrid during 2010/2011, we had to ‘unlearn’ what we thought we knew about the museum sector and this helped us to shape our understanding of the real business needs. One such need is the requirement to balance the conservation of works of art with their exhibition.

The museum sector also uses timer-controlled artificial lighting to protect priceless and irreplaceable works of art. One such example is the Ardabil Carpet, shown in the image above, which is illuminated for just 10 minutes every half hour in order to limit light damage.

Museums tend to apply a One-Size-Fits-All approach to light management, placing entire exhibitions in semi-darkness and then using directed artificial lighting which can cause focussed deterioration on light-sensitive materials.

Instead of putting whole exhibitions in semi-darkness, why not protect just the most light-sensitive objects in darkened display cases, only illuminating them when someone is present?

Of course, this presents a question: what is the optimum ‘balance point’ between protection and exposition to light?

This article attempts to model the optimum light transmittance that a museum display case must offer in order to correctly display works of art but at the same time minimising the deterioration resulting from incident light. It is found that the optimum light exposure depends on factors such as the popularity of the art piece, the light transmittance properties of the display case and the ambient light levels in that part of the museum.

We propose using electronically-switchable Smartglass to ‘tune’ the display cabinet to the needs of each artefact.

Several solution models are presented based on CIE recommended exposure figures forswitchable glasslight-sensitive materials and grouped by the CIE categories of light sensitive object.

Read more about it here.

600450 Switchable Glass - Museum glassonweb.com

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