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:
Oct. 15, 1991
Filed:
Dec. 01, 1989
Applicant:
Inventor:
Shigeru Ohshima, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; G02B / ;
U.S. Cl.
CPC ...
385 36 ; 372102 ; 359487 ; 359566 ; 359638 ;
Abstract
In a device for mixing a first input optical signal and a second input optical signal, a polarization beam splitter receives the first and second input optical signals. Each of the first and second input optical signals is separated into polarized optical signals having different polarization planes. Each polarized optical signal is divided into divided optical signals being transmitted in directions with an acute crossed angle in a mixer which mixes the divided optical signals corresponding to the first and second input optical signals. The mixed optical signals are then focused.