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:
Aug. 17, 2010
Filed:
Aug. 01, 2007
Walter Taylor, Dale City, VA (US);
Walter Taylor, Dale City, VA (US);
Dynex Technologies, Inc., Chantilly, VA (US);
Abstract
A system for detecting the presence of a substantially transparent object includes a radiation source producing radiation at a predetermined bandwidth, and a radiation receiver is positioned to receive radiation from the radiation source. An opening is formed between the radiation receiver and the radiation source sized to allow a substantially transparent object such as a sample or reagent tip to slide between the radiation receiver and the radiation source. At least one polarizing filter is positioned between the radiation receiver and the opening, whereby a change in intensity of radiation received by the radiation receiver due to the presence or absence of the transparent object can be detected.