Optics: measuring and testing – By configuration comparison – With photosensitive film or plate
Patent
1977-03-25
1979-10-09
Corbin, John K.
Optics: measuring and testing
By configuration comparison
With photosensitive film or plate
250223B, G01B 1110
Patent
active
041704177
ABSTRACT:
A device for measuring the profile of a body wherein three expanded planar laser beams are provided, each of the planar beams being relatively disposed at angles of 45.degree. and directed towards the path of a moving body. Respective photocells are arranged to be illuminated by the beams after passage across the path of the moving body. Relative movement is effected between the body and the laser beams, such that the body successively passes through the beams and effectively masks respective ones of the beams from their associated photocells for a time period indicative of the diameter of the body at the photodetector height. The photodetector thus provides an electrical signal representative of such period. The diameter of the body is measured at a plurality of heights to provide a profile of the body in a vertical plane perpendicular to the plane of the light beam.
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Corbin John K.
International Glass Equipment Co. S.A.R.L.
Punter Wm. H.
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