Invisible light blocking structure

Abstract

An invisible light blocking structure includes a first transparent substrate, a metal layer, a transparent protecting layer and an invisible light blocking unit. The first transparent substrate has a first bottom side and a first upper side. The metal layer is disposed on the first bottom side and has a first metal side facing away from the first transparent substrate. The first upper side faces away from the metal layer. The transparent protecting layer is disposed on the first metal side. The transparent protecting layer has a first protecting side facing away from the first transparent substrate. The invisible light blocking unit is disposed on at least one of a first protecting side and the first upper side. The invisible light blocking unit has cesium tungstate.

Dependencies are inferred from the claim text.