Optics: measuring and testing – Blood analysis
Patent
1975-05-05
1976-11-02
Corbin, John K.
Optics: measuring and testing
Blood analysis
356103, G01N 3316, G01N 2100
Patent
active
039893812
ABSTRACT:
An optical chamber for use in an apparatus for measuring characteristics of small particles such as blood cells while the particles are suspended in a liquid includes a housing which defines the optical chamber. An entrance and exit are formed in the chamber for allowing entry and exit of the particle suspending liquid. The chamber itself is formed to allow passage of the particle suspending liquid therethrough in a thin stream with the particles in the stream passing through the chamber in sequence. A portion of the housing is formed from light transmitting material for allowing a beam of light to be transmitted into the chamber where it intersects the thin stream of particle suspending liquid at a junction point and produces resultant light upon intersecting said particles. A spherical shaped portion is formed in the housing and is concave into the chamber with the radial center of the spherical shaped portion located substantially at the junction point. The concave surface is reflective to reflect the resultant light coupled thereto. An apparatus including the optical chamber is also disclosed.
REFERENCES:
patent: 3869208 (1975-03-01), Lorenz
Jenkens et al, "Fundamentals of Optics," McGraw-Hill 1950, pp. 37, 91.
Corbin John K.
Coulter Electronics Inc.
Punter Wm. H.
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