Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1991-11-04
1993-08-10
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
25022731, G06K 710
Patent
active
052351939
ABSTRACT:
A device for identifying a container carrier for an automatic analytical apparatus is described. The carrier has an array of fields on a flange, some of the fields being transparent and the other fields being opaque. The device includes an electro-optical arrangement to detect whether each of the fields is transparent or opaque. The electro-optical arrangement having alight source, a light guide member for receiving a beam of light from the light source and splitting the beam into a plurality of light rays, each ray being directed toward one of the fields, and a plurality of light receivers each being respectively associated with each of the fields and being disposed so as to receive the ray of light which passes through the associated field.
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Gould George M.
Hoffman-La Roche Inc.
Johnston George W.
Nelms David C.
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