Abstract: An optical system affixed to an electronic apparatus is provided, including a first optical module, a second optical module, and a third optical module. The first optical module is configured to adjust the moving direction of a first light from a first moving direction to a second moving direction, wherein the first moving direction is not parallel to the second moving direction. The second optical module is configured to receive the first light moving in the second moving direction. The first light reaches the third optical module via the first optical module and the second optical module in sequence. The third optical module includes a first photoelectric converter configured to transform the first light into a first image signal.

Abstract: A beverage dispenser includes a container, a transmission shaft, and at least one partitioning plate mounted to the transmission shaft to move therewith. The container includes a compartment for receiving a beverage. The container includes an inlet through which beverage enters the container and an outlet through which the beverage exits the container. The transmission shaft is movable relative to the container. The at least one partitioning plate divides the compartment of the container into at least two subcompartments. At least one passageway is defined between the at least one partitioning plate and an inner circumference of the container to allow communication between the at least two subcompartments.

Abstract: A stirring device for a beverage dispenser includes a container, a stirring unit, a rotational unit, and a reciprocating unit. The container includes a compartment for receiving a beverage. The stirring unit mounted in the compartment includes a shaft and at least one stirring member. The rotational unit drives the shaft to turn, thereby turning the at least one stirring member for stirring the beverage. The reciprocating unit drives the shaft to reciprocate longitudinally, thereby urging the at least one stirring member to reciprocate longitudinally for stirring the beverage.