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:
Dec. 21, 2021
Filed:
Apr. 23, 2020
Raytheon Company, Waltham, MA (US);
John A. Millard, Sahuarita, AZ (US);
John O. Crawford, Vail, AZ (US);
RAYTHEON COMPANY, Waltham, MA (US);
Abstract
A transmissometer and method for determining a transmissivity of an atmosphere within a chamber. A chamber contains the atmosphere. A light source generates a test beam and a light detector detects the test beam. A periscope is movable between a first position which allows the test beam to pass through the atmosphere in the chamber and into the light detector and a second position in which the test beam is deflected to pass into the light detector without passing through the atmosphere in the chamber. A processor determines the transmissivity of the atmosphere from a transmissivity measurement for the test beam obtained by the light detector when the periscope is in the first position and a transfer standard obtained at the light detector when the periscope is in the second position.