METHOD AND APPARATUS FOR MEASURING AND/OR DISCRIMINATING SURFACE STRUCTURE

摘要

PURPOSE: To also measure the structure under a surface simultaneously with a surface structure by fitting and adjusting a wavelength of ultrasonic waves to the structure of matter. CONSTITUTION: A hermetically closed box 1 filled with a liquid has a support surface 2 on the side of its bottom part and matter 3 to be inspected and analyzed is pressed to the support surface 2. The transmitter 4 and receiver 5 within the box 1 are arranged on the support 6 moved along the track within the box 1 and the support 6 is guided along the track of motion. By this constitution, the local space frequency spectrum of the matter (fingertip) 3 is measured. In this case, an ultrasonic generator 12 operates the transmitter 4 through a switch 13 and a control unit 15 adjusts the accurate lasting time of a signal. A receiving signal is sent to an analyser through a detector 17.