When it detects that you are working in, say, a darkened movie theater, the screen automatically dims slightly to save power.

Some systems also support demand response and will automatically dim or turn off lights to take advantage of utility incentives.

The circuit that automatically dimmed the lights when the ship's cloak was engaged would also have to be disabled, he decided.

The room lights dimmed automatically and a view of an asteroid field snapped into clear focus.

Even though the viewscreen automatically dimmed, the flash was still painful.

"Tactical alert," Archer said, and the bridge lighting dimmed automatically in response.

Many newer models have protection features that automatically dim the image when the device is pointed at a source of bright light.

The lights dimmed automatically, and a new food block descended.

Kirk covered his eyes until the screen dimmed automatically to compensate for the sudden brightness.

For example, the backlight automatically dims to save power and pops back on when you touch the screen.