Apparatus for detecting a particle agglutination pattern

Details Apparatus for detecting a particle agglutination pattern Apparatus for detecting a particle agglutination pattern

1982-04-29

1984-08-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356246, G01N 1506

Patent

active

044659385

ABSTRACT:
An apparatus for detecting photoelectrically a particle agglutination pattern formed on a conical bottom surface of a reaction vessel is disclosed. A lamp and a diffusion plate are arranged above the reaction vessel to illuminate the particle pattern and an objective lens and a light detector are arranged underneath the reaction vessel to form an image of the particle pattern on the light detector. In order to prevent a relatively sharp image of the diffusion plate from being formed on the light detector, an optical correction plate having a conical projection formed in its lower surface is arranged immediately below the reaction vessel. The optical correction plate may be secured to a lower surface of the reaction vessel or may be integrally formed with the reaction vessel on its lower surface.

REFERENCES:
patent: 3883308 (1975-05-01), Matte
patent: 4226531 (1980-10-01), Tiffany et al.

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