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