Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1975-06-17
1977-06-07
Lieberman, Eli
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250227, 250573, 356197, 356196, G01N 2126
Patent
active
040285537
ABSTRACT:
An apparatus for examining vertically-held stationary pharmaceutical ampoules containing an injectable liquid, after having rotated the ampoules to spin the liquid and any foreign particles in the liquid, comprises a laser source emitting a beam which is directed vertically through an ampoule to be examined by one or more objectives. A series of photoelectric cells receive the beam, possibly via fiber bundles, and influence a circuit providing a signal for rejection of an ampoule containing a moving particle. The laser beam may be divided into several beams by partially reflecting mirrors, or a single beam passed through an ampoule several times by means of oblique mirrors.
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Lieberman Eli
Moore David K.
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