Sneeze guard is mainly to provide isolation and pratection between the operator and the object being abserved.
When using ultaviolet light, although the unltraviolet radion dose is not high, long time obervation can have a harmful effect on the human eye, and therfore it is necessary to use sneeze guard to isolate.
The sneeze gard can also isolate harmful, radiating, and volatile substances to ensure the safety and health of the operator.
It can also prevent people from exhaling, sneezing, etc. during operation, thereby polluting the observed ojbects.