Optics: measuring and testing – Plural test
Reexamination Certificate
2006-09-26
2006-09-26
Lauchman, Layla G. (Department: 2877)
Optics: measuring and testing
Plural test
C356S336000, C356S342000, C356S369000
Reexamination Certificate
active
07113266
ABSTRACT:
A flow cytometer includes an optical flow cell through which particles to be characterized on the basis of at least their respective side-scatter characteristics are caused to flow seriatim. A plane-polarized laser beam produced by a laser diode is used to irradiate the particles as they pass through a focused elliptical spot having its minor axis oriented parallel to the particle flow path. Initially, the plane of polarization of the laser beam extends perpendicular to the path of particles through the flow cell. A half-wave plate or the like is positioned in the laser beam path to rotate the plane of polarization of the laser beam so that it is aligned with the path of particles before it irradiated particles moving along such path.
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patent: 6713019 (2004-03-01), Ozasa et al.
patent: 6794671 (2004-09-01), Nicoli et al.
patent: 2005/0112541 (2005-05-01), Durack et al.
Alter Mitchell R.
Kutz Warren W.
Lauchman Layla G.
Punnoose Roy M.
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