High performance privacy glazing structures

A privacy glazing structure comprising:

• a first pane of transparent material;
• a second pane of transparent material that is generally parallel to the first pane of transparent material;
• a spacer positioned between the first pane of transparent material and the second pane of transparent material to define a between-pane space, the spacer sealing the between-pane space from gas exchange with a surrounding environment and holding the first pane of transparent material a separation distance from the second pane of transparent material;
• a third pane of transparent material that is generally parallel to the first pane of transparent material and the second pane of transparent material;
• a fourth pane of transparent material that is generally parallel to the third pane of transparent material;
• an electrically controllable optically active material positioned between the third pane of transparent material and the fourth pane of transparent material;
• a first laminate layer bonding the second pane of transparent material to the third pane of transparent material, the first laminate layer providing a barrier to ultraviolet light that would otherwise impinge upon the electrically controllable optically active material;
• a fifth pane of transparent material;
• and
• a second laminate layer bonding the fourth pane of transparent material to the fifth pane of transparent material,
• wherein the first pane of transparent material has a thickness ranging from 2 mm to 6 mm, and the second, third, fourth, and fifth panes of transparent material each have a thickness ranging from 0.5 mm to 4.0 mm.