A method of determining a first thickness of a first conductive layer formed of a first conductive material on a target substrate, the target substrate further having a second conductive layer formed of a second conductive material different from the first conductive material, is disclosed. In the center of an upper screen displayed on the stereoscopic LCD, a designation image for adjusting a position and a size of an object to be imaged is displayed. The flange portion protrudes farther beyond the first longitudinal end in an optical axis direction of the lens portion.