Abstract: A charging device adapted for charging electric vehicles is provided. The charging device includes a charging station, an adapter, and a charging plug. The charging station includes an insertion portion. The adapter has a first side and a second side opposite to each other, the first side is detachably connected to the charging station, and the adapter includes a linkage assembly. The charging plug is detachably connected to the second side of the adapter. In a first state, the charging plug is connected to the second side and the first side is connected to the charging station. In a second state, the charging plug is connected to the second side and the first side is detached from the charging station, and the linkage assembly is engaged to the charging plug, so that the charging plug and the adapter are locked with each other.

Abstract: The disclosure provides a smart liquor cabinet and a management method for the liquor cabinet. In the management method, a voice command is received and an intent of the voice command is determined. If the intent of the voice command is related to a remaining space of the liquor cabinet, then the remaining space with no liquor in the liquor cabinet is determined. If the intent of the voice command is related to an inventory situation of the liquor cabinet, then the inventory situation of stored liquor in the liquor cabinet is determined. The response of the intent is outputted. The response is related to the remaining space or the inventory situation. In this way, the liquor and space in the liquor cabinet may be counted easily and quickly.

Abstract: The disclosure provides a smart liquor cabinet and a management method for the liquor cabinet. In the management method, a voice command is received and an intent of the voice command is determined. If the intent of the voice command is related to a remaining space of the liquor cabinet, then the remaining space with no liquor in the liquor cabinet is determined. If the intent of the voice command is related to an inventory situation of the liquor cabinet, then the inventory situation of stored liquor in the liquor cabinet is determined. The response of the intent is outputted. The response is related to the remaining space or the inventory situation. In this way, the liquor and space in the liquor cabinet may be counted easily and quickly.

Abstract: An optical polarization converter system includes a plurality of lenses, a light incident surface, a light emitting surface, a first optical coating, a second optical coating and a half-wave plate. The lenses are made of light permeable medium and mutually and tightly arranged. A plurality of basic widths are defined on the light incident surface and the light emitting surface. The first optical coating and second optical coating, configured between the light incident surface and the light emitting surface and having an inclined angle of forty-five degrees relative to the light incident surface, are spaced apart one basic width. The half-wave plate is disposed on the light emitting surface corresponding to one of the first optical coating and the second optical coating. The first and second optical coatings are provided with properties of splitting an incident beam and beam reflection.