noun
backlight; backlighting
General term for illumination from behind, used in photography, design, and everyday descriptions.
この写真はバックライトが強すぎて顔が暗くなっている。
In this photo, the backlight is too strong and the face is dark.
noun
Specifically the light source behind an LCD screen; common in tech contexts.
液晶ディスプレイのバックライトが故障した。
The backlight of the LCD display has failed.
noun
backup light; reversing light
Automotive term for the white light that comes on when a vehicle is in reverse gear.
車のバックライトが切れているので交換しないといけない。
The car's backup light is out, so I need to replace it.