face shield
 US /ˈfeɪs ˌʃiːld/
 UK /ˈfeɪs ˌʃiːld/

1. 
protector facial, pantalla facial
a piece of transparent material attached to a helmet or worn on a headband, used to protect the face from impact, splashes, or other hazards
:
• 
Healthcare workers wear a face shield to protect themselves from airborne particles.
Los trabajadores de la salud usan un protector facial para protegerse de las partículas en el aire.
• 
The welder put on his face shield before starting work.
El soldador se puso su protector facial antes de empezar a trabajar.