Electro-optical thickness measurement apparatus

摘要: APPARATUS FOR MEASURING THE THICKNESS OF AN OBJECT WITHOUT REQUIRING ANY PHYSICAL CONTACT COMPRISES TWO SOURCES RADIANT ENERGY DISPOSED AT A KNOWN FIXED DISTANCE FROM ONE ANOTHER, ON EACH SIDE WHICH IS TO BE MEASURED AND CENTROID STRACKING RECEIVERS IN SPATIAL RELATIONSHIP WITH SOURCES. DIRECTED REFLECTED TRACKED BY DETECTOR ELEMENTS PRODUCT OUTPUT SIGNALS REPRESENT ANGLE ARRIVAL ENERGY. ARE ELECTRONICALLY PROCESSED ACCORDING TRIGONOMETRIC PRINCIPLES SUCH AS PROVIDE SIGNAL REPRESENTATIVE BEING MEASURED.