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. 26, 1992
Filed:
Mar. 04, 1991
Applicant:
Inventor:
Horst Huttmann, Uetersen, DE;
Assignee:
Vaisala Oy, Helsinki, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01S / ;
U.S. Cl.
CPC ...
356342 ; 356-5 ; 342 26 ;
Abstract
This invention concerns an apparatus for the measurement of the parameters of atmospheric visibility or optical density. The apparatus includes a transmitter with which light operating as the measurement signal can be emitted to the measured space; a receiver with which light backscattered from the measured space can be received; and an information processor with which the information of light received by the receiver can be processed and interpreted. According to the invention the active surfaces of the transmitter and receiver means are aligned along an at least essentially same optical axis.