In 1999, Goppion designed a very special case for Andrea Mantegna’s Lamentation over the Dead Christ. This first creation led to other models that today make up the QF Class, which are meant for all types of paintings.
This so-called “hidden case” developed by Goppion encloses the painting. It is thin enough to be concealed by the wooden frame and therefore invisible to the viewer. The frame is attached to the outer structure of the display case with removable adhesives, non-aggressive resins and neutral silicone. The front glass pane is set close to the painted surface so as not to measurably diminish the visibility of details. To minimize reflections and chromatic aberration, we use anti-glare extra-clear glass for the front side only. Its special chemical composition with low iron content virtually eliminates color distortion. The light transmission coefficient and color rendering exceed those of commonly used glass panes and even when described as “colorless,” a greener hue always dominates.
The concealed case allows a full view of the back of the painting without having to open the case. This is because the back panel is made of glass, and the entire case is fastened to the wall, allowing its rotation on hinges placed on one of the vertical sides.
Goppion has an international patent for this specific characteristic.
RH control is provided by a passive system. Uniform compression of the basket seal is ensured by mechanical compressors located along the entire rim of the metal frame of the case.
Inside the case, the painting rests on anti-vibration, anti-seismic brackets with elastic joints, specially designed for this application. The brackets are attached to the outer frame. To prevent damage to the painting, it is separated from the fasteners by a silicone pad.
Goppion has an international patent for this fastening system.