Not modern, but Apollo used coatings on the windows of the command module and lunar module. Source: Apollo Experience Report: Spacecraft Structural Windows, NASA Tech Note D-7439.
The CM windows were triple-pane (except for the telescope optics). The outer-most pane was made of fused amorphous silica and protected the cabin from micrometeroids, radiation, and re-entry heat. Because the outer-most pane was not air-tight, the space under it voided to vacuum once in space. The two inner panes were made of thermally-tempered aluminosilicate glass, provided an air-tight seal, and filled in between with 7.0 psia dry nitrogen.
From outside to inside, the panes of the CM were coated as thus:
- A coating of magnesium fluoride on the outer surface of the window.
- A blue/red (BR) coating on the inner surface of the outer pane.
- A high-efficiency anti-reflective (HEA) coating on all four surfaces of the two inner panes.
The BR coating was removed from the hatch window on Apollo 13, 14, and 15 to allow a mulitspectral photography experiment.
All LM windows (except for sextant optics) were double-pane. The outer pane protected the cabin from micrometeroids and radiation, and were made of annealed Vycor 7913 glass. The inner pane provided an air-tight seal and was made of chemically-tempered Chemcor 0312 glass. The space between the panes was vented to space.
From outside to inside, the panes of the LM had coatings:
- "A final BR [blue/red] coating was applied to the outer surface
of each outer pane to restrict the amount of infrared and ultraviolet light to the cabin."
- An high-efficiency anti-reflective (HEA) coating on the inner surface of the outer pane.
- An electrically conductive coating (ECC) to defog the window by electrical heating. " After ECC application, light transmission was reduced to approximately 76 percent."
- Another HEA coating on the inner surface of the inner pane. "To increase the light transmission and decrease the reflection caused by the ECC, an HEA coating was applied to the in-board surface of each inner and outer pane. When a pane was completely coated and a black edge (black velvet paint) was applied to the periphery, the light transmission was increased to approximately 82 percent and the reflection was reduced from approximately 14 percent to 5 percent. "
I wish the report gave more details about the chemical identity and absorption spectra of the coatings, but they are not provided.