Electromagnetically shielded coverings for optical openings

A multi-layered shielded covering assembly for overlay of an optical opening in a building structure, the shielded covering assembly comprising:

• a first shielded covering comprising a first metal-CVD coated woven substrate, the first metal-CVD coated woven substrate comprises a first woven substrate and a first metal-CVD coating, the first woven substrate having threads and interstices between the threads and a first orientation of the threads;
• a second shielded covering comprising a second metal-CVD coated woven substrate, the second metal-CVD coated woven substrate comprises a second woven substrate and a second metal-CVD coating, the second woven substrate having threads and interstices between the threads and a second orientation of the threads;
• and
• a protection feature to protect at least one of the first shielded covering and the second shielded covering from corrosion, the protection feature comprising at least one of:
• a transparent resin filling the interstices and coating at least one of the first metal-CVD coated woven substrate and the second metal-CVD coated woven substrate;
• at least one glass barrier disposed against at least a portion of at least one of the first metal-CVD coated woven substrate and the second metal-CVD coated woven substrate;
• and
• at least one transparent polymeric barrier disposed against at least a portion of at least one of the first metal-CVD coated woven substrate and the second metal-CVD coated woven substrate.