Optics: measuring and testing – Lamp beam direction or pattern – With lamp focusing
Patent
1973-11-12
1976-08-24
Chatmon, Jr., Saxfield
Optics: measuring and testing
Lamp beam direction or pattern
With lamp focusing
356156, 356167, 356159, 356237, 356239, G01B 1130
Patent
active
039763820
ABSTRACT:
A procedure and an apparatus for obtaining information regarding the geometry of surfaces, for example on work pieces in mechanical industry.
The procedure is based on casting a shadow on the surface by partially shielding incident light or other types of radiation. The edge of the shadow thus cast on the work piece, if viewed from a direction substantially different from that defined by the radiation source and the edge of the shield,will provide a profile of shield, will surface. Moving the shadow across the work piece will provide a continuous series of such profiles, if the edge of the shadow may be seen at all times.
The apparatus may include photo-electric converters, like a TV camera, for registering the shape of the shadow by means of a display screen, and for providing signals which may be processed by a computer. The computer output signals, being indicative of the size and the location of special features of interest, for example a joint to be welded, may be used for automatic control of machine shop processes, like turning, welding, measurement and inspection.
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A/S Kongsberg Vapenfabrik
Chatmon, Jr. Saxfield
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