Abstract: A power supply device for supplying power via internet network comprises a power supply unit and a power consumption unit. The power supply unit comprises a power source unit and a first processing unit. The power source unit provides a first voltage with a first power and a second voltage with a second power. The first processing unit detects a connection status of the power supply unit for controlling the power source unit to provide the first voltage, and controlling the power source unit to provide the second voltage according to a control signal. The power consumption unit comprises a connecting unit and a second processing unit. The connecting unit is for connecting the power source unit and the first processing unit. The second processing unit receives the first voltage via the connecting unit and provides the control signal according to the first voltage.

Abstract: A microstructure forming device for forming an optical plate includes: a roller unit including a pressing roller, and first and second embossing rollers that respectively have first and second micropatterned surfaces; an extrusion die for extruding a substrate material to a first nip between the first embossing roller and the pressing roller to form a lower microstructure; and a photosensitive resin-applying unit disposed immediately above the second embossing roller for directing a photosensitive resin onto the second embossing roller to form an upper microstructure that is opposite to the lower microstructure.

Abstract: A method for making an optical plate formed with a microstructure includes: extruding a substrate material and advancing the same to pass through a first nip formed between an embossing roller and a first pressing roller, the embossing roller having a micropatterned surface formed with a plurality of protrusions and a plurality of grooves, the protrusions and the grooves cooperatively defining a microstructure-forming space; applying a photosensitive resin to the micropatterned surface and filling the same into the microstructure-forming space upstream of the first nip to form a plurality of microelements respectively in the microstructure-forming space; allowing the photosensitive resin applied to the micropatterned surface to pass through the first nip together with the substrate material, thereby bonding the microelements to the substrate material; and irradiating and curing the photosensitive resin downstream of the first nip to form the optical plate.