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. 18, 1997
Filed:
Oct. 08, 1996
Applicant:
Inventor:
Kanjo Orino, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
359172 ; 359152 ; 359159 ; 359168 ;
Abstract
An optical space communication apparatus includes a light-emitting device for emitting an elliptic light beam, and a light-projecting optical system for converting the elliptic light beam into a transmission light beam. The light-projecting optical system shapes a cross section of the transmission light beam into an elliptic shape immediately after having left the light-projecting optical system and also shapes the cross section of the transmission light beam into a nearly circular shape at a receiving point being located at the farthest distance in a transmissible distance range.