Operable aluminium panels on roof 
Due to volumetric restrictions, the architect opted for a project in which the dream of an intangible glazed wrapping included the roof. Obviously this requires the control of the excesses of light and solar heat radiation. To protect the inner space he arranged, over the weatherproof glazed roof, some perforated aluminium panels (5mm thick). These panels can be manipulated hydraulically from the inside of the house.
I suspect that, as usual, the capacity of the filter is not enough; see the transparency of the sheets in the last picture.