The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1976
Filed:
May. 05, 1975
Mack J Fulwyler, Los Alamos, NM (US);
Coulter Electronics, Inc., Hialeah, FL (US);
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.