Optics: measuring and testing – By inspection with agitation or rotation – Of container contents
Patent
1983-11-18
1987-06-30
Lusignan, Michael R.
Optics: measuring and testing
By inspection with agitation or rotation
Of container contents
358106, G01N 2190, H04N 718
Patent
active
046766502
ABSTRACT:
A method and apparatus for lighting a container which is to be inspected for particulate contamination comprising a first lighting means consisting of two angularly displaced light beams which create an angular shadow zone, a second lighting means of significantly lower intensity than said first lighting means and positioned intermediate the two light beams and a viewing means positioned in the shadow zone.
REFERENCES:
patent: 3966332 (1976-06-01), Knapp et al.
patent: 4087184 (1978-05-01), Knapp et al.
patent: 4402612 (1983-09-01), Alexander et al.
Bjorndal Paul M.
Knapp Julius Z.
Zeiss John C.
Lusignan Michael R.
Maitner John J.
Miller Stephen I.
Nelson James R.
Schering-Plough Corporation
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