lightcover
nounUK /ˈlaɪtˌkʌvə/
US /ˈlaɪtˌkʌvər/
A lightcover is a soft cover that keeps light out or keeps something safe from light.
She pulled the lightcover over the lamp to make the room dim.
OTHER MEANINGS
2. A thin protective layer placed over a light or light-sensitive object.
The camera's lightcover protects the lens from bright sun.
3. A small cloth or shield used to block a beam of light.
He fitted a lightcover on the flashlight so it wouldn't wake the baby.
4. A decorative cover for a light fixture.
The glass lightcover on the ceiling fan was shaped like a flower.