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.

Date of Patent:
Dec. 08, 2015

Filed:

Apr. 10, 2013
Applicant:

Dräger Safety Ag & Co. Kgaa, Lübeck, DE;

Inventor:

Arne Tröllsch, Lübeck, DE;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/3504 (2014.01); G01N 21/31 (2006.01); G01N 33/00 (2006.01);
U.S. Cl.
CPC ...
G01N 21/3504 (2013.01); G01N 21/314 (2013.01); G01N 33/0031 (2013.01); G01N 33/0062 (2013.01); G01N 2021/3513 (2013.01);
Abstract

A gas detector system includes a transmitter (), which has a light source (), which emits an analytical light beam (). A transmitter lens assembly (), to focus the analytical light beam () in an emission direction (), includes a receiver (') with a receiver lens assembly (), defining a receiver focal point (′) and a receiver axis (). A light mixing rod () defines a first rod axis () that extends from an inlet end (), pointing toward the receiver lens assembly (), to an outlet end () facing an analytical detector () and a reference detector (). An analytical filter (′) is arranged in front of the analytical detector () as viewed from the receiver lens assembly (). A reference filter (′) is arranged in front of the reference detector () as viewed from the receiver lens assembly ().


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