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:
Jul. 29, 2008
Filed:
Sep. 08, 2005
Reino Keränen, Espoo, FI;
Reino Keränen, Espoo, FI;
Vaisala Oyj, Helsinki, FI;
Abstract
This publication discloses an apparatus and method for measuring a gas content. The apparatus includes a light transmitter (), by means of which coherent light can be sent to the measurement object (), a receiver (), by means of which light that has passed through the measurement object () can be detected, and optical means (), by means of which the light intensity of the light transmitter () can be aimed at the receiver (). According to the invention, the optical means include a lens element (), the optical axis of which is arranged essentially obliquely relative to the longitudinal axis of the measurement object (), so that the angles of the normals of the optical boundaries relative to the measuring signal are set obliquely. The lens element () is both a refracting and a reflecting element, and separates the measurement object () from the means ().