- front diaphragm
- front light shield assembly
- 前: front
- 遮光板: visor; gobo; hood
- 前遮光板组: front light-shield assembly
- 前遮光器: front shutter
- 遮光板: antidazzling device; barn door flippers; barn doors; cover-flap; dark slide; diaphragm; dimmer arrangement; douser; dowser; flag; light screen; masking board; occluder; orifice; shadow shield; spill shield; sun visor; sun-visor; tinted shade; window shade
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