With increasingly high-powered active devices being used in optical network transmission, it becomes more and more important to effectively prevent eyes from being damaged by potentially harmful beams. In order to meet this requirement, two kinds of fiber adapters have been designed. Fiber optic adapters with external or internal shutters.
HYC LC fiber optic adapter with inner shutter which has shutter plates inside to proof the dust and the light. The inner shutter prevents accidental exposure of the beam and protects the eyes from potentially harmful light. At the same time, it can also play a role in dust prevention, to ensure the internal cleaning of the adapter, avoid the impact of ferrule tip.

The internal shutters are fully automatic. No matter which angle the connector is inserted, the end face of the ferrule will not touch the shutter plate. So that the ferrule will not be soiled or damaged, and the precise connection of the end face is ensured.

Minimize eye exposure to lasers while providing continuous coupler protection from dust and contaminants with these internal shutter adapters.
Article from HYC Blog.