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:
Nov. 02, 1999
Filed:
Jun. 25, 1997
Applicant:
Inventors:
Edgar Fischer, Mullheim Dorf, CH;
Reinhard Czichy, Eggersriet, CH;
Assignee:
Oerlikon Contraves AG, Zurich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
359156 ; 359172 ; 359190 ;
Abstract
The instant invention relates to a method and a device and its opto-mechanical structure for the optical transmission of data over free space distances, using the principle of phase modulation of a lightwave generated by a laser and by a homodyne superimposition in a photodector of a lightwave from a second laser on the received lightwave.