Orifice plate inspection apparatus and method

Details Orifice plate inspection apparatus and method Orifice plate inspection apparatus and method

1987-07-21

1989-05-23

Lall, Parshotam S.

Boots, shoes, and leggings

364560, 250560, 356239, 356384, G06F 1546

Patent

active

048336238

ABSTRACT:
The fluid jet applicator orifice plate inspection apparatus provides an optoelectronic inspection system including a laser light source and an optical detector mounted on a carriage for traversing an orifice plate to cause laser light to pass through the orifices one at a time for detection on the other side of the orifice plate by an optical detector. The intensity of the detected light is proportional to the area of an individual orifice through which the laser light has been transmitted. The detector generates light intensity signals which are proportional to the area of the orifices and which signals are processed, digitized, and further processed by a data processor to determine, for example, the relative sizes of the orifices along the plate, the orifice size distribution along the plate and flaws of the individual orifices.

REFERENCES:
patent: 3746455 (1973-07-01), Flamholz
patent: 3963348 (1976-06-01), Nakatani et al.
patent: 4037968 (1977-07-01), King et al.
patent: 4171158 (1979-10-01), Malvick et al.
patent: 4296474 (1981-10-01), Hurt
patent: 4492475 (1985-01-01), Takahashi

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