A liquid soap dispenser having a permanent housing permits simplified insertion and replacement of disposable fluid reservoirs. The metal film has a base portion placed on one side surface of the core along a propagation direction of the laser beam facing from one end side toward the other end side, and an extending portion extended from the other end side of the base portion to the other end side in the propagation direction rather than the core. The implantable lumen filter may also include a distal portion having a generally-tapered outer surface defined by a plurality of outer struts coupled together at the distal end of the distal portion. The user may enter trade commands at different price levels using an input device. The opposite camera, which captures the image, has its light source turned off while in the transparent scanning mode. Therefore, the rising rate of the output voltage is increased, thereby solving the screen-flickering problem.