Shutter-window

First you start off with a conventional double-pane window commonly found in someone's residence and place between the panes of glass polarizing material. From my understanding, polarizing material (first produced my the polaroid comapny) is merely 2 sheets of finely perforated material, that when placed over one another in the correct position, becomes opaque. Now mount a photosensor somewhere on the window hardware, perhapse arround the frame or something. When the sensor detects a flash, or automobile headlights, a small motor augments the polarizing sheets to limit the amount of light or blackout the window so the intense light does not disturb the occupant of the room. For daytime, or long periods of light exposure, the window can adjust the light output for the interior of the window. Kind of like a dimmer-switch for a window during the daytime, and with an inside sensor, the light coming through the window could be modeerated to a constant output even as the sun goes down.

This came to me after being awakened during a late night electrical storm. If it wasn't for the lightning, I would have probably gotten a decent night's sleep.

--In a way similar to "Shade Glass" proposed by pitch but reactive to incoming light, and sensitive to the light passing through it