An optical apparatus includes a light-quantity-adjusting unit, a first lens unit disposed closer to an object than the light-quantity-adjusting unit, a second lens unit disposed closer to an image plane than the light-quantity-adjusting unit, and a drive unit for driving the first lens unit and the second lens unit in an orthogonal-to-optical-axis direction. A captured image is associated with a received tag ID and entered. The water spout has a water nozzle arranged for connection through the spout to a water supply. Device can optionally use wireless connection for image transferring and processing. A switching unit SSa is controlled according to the output code, thereby charging or discharging a capacitor element C1 with a chargedischarge current CDI corresponding to the output code. Said defect free composite membranes have broad applications, ranging from filtration of fruit juice, wine and milk to biotech down stream processing and purification of drinking water, municipal and industrial wastewater.