Method and apparatus for measuring the size of wire rod with las

Details Method and apparatus for measuring the size of wire rod with las Method and apparatus for measuring the size of wire rod with las

1988-07-22

1989-10-03

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356386, G01N 2186, G01V 904

Patent

active

048719102

ABSTRACT:
A method for measuring the size of a wire rod comprises the steps of turning a laser beam from a laser beam source into a parallel beam used for scanning, disposing a first wire rod having an unknown size and a second wire rod having an already known size larger than the diameter of the spot of the laser beam adjacent to each other in a direction of scanning with the laser beam, receiving the laser beam traversed the first and second wire rods thereby generating a corresponding electrical output signal, and calculating the size of the first wire rod on the basis of the electrical output signal.

REFERENCES:
patent: 4732486 (1988-03-01), Rinn
patent: 4778271 (1988-10-01), Kuwabara et al.
"Illustrations of Applications of Laser Beams", in Electronics Review, Jan. Jul. 1980.

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