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:
May. 13, 2014
Filed:
Aug. 09, 2011
Peter Kiesel, Palo Alto, CA (US);
Richard H. Bruce, Soquel, CA (US);
Michael Bassler, Mainz, DE;
Palo Alto Research Center Incorporated, Palo Alto, CA (US);
Abstract
An analyzer includes a flow cell having a flow channel through which a sample passes. A light source excites at least a first particle type in the sample in one or more excitation region(s), and a detector detects light emitted by the excited particle. A spatial filter defines detection regions, wherein light emitted by the particle is transmitted to the detector, and interspersed shielded regions, wherein such light is at least partially blocked from reaching the detector. The light emitted by the excited particle has a response time τ, and the sample may also contain a component that is excited by the light source and that has a response time τ. The excitation region(s) and the detection regions are arranged to provide a time delay between excitation and detection, the time delay tailored to isolate light emitted by the first particle from light emitted by the component.