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:
Jun. 22, 1993
Filed:
Feb. 15, 1991
Applicant:
Inventor:
David M Braun, Santa Rosa, CA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
25022724 ; 25022724 ; 359652 ; 385 34 ;
Abstract
A gradient-index (GRIN) rod lens for use in an optical receiver, in which the end face of the GRIN rod lens opposite a photodetector is bevelled. The resulting optical receiver achieves an optical return loss which is >10 dB higher than known optical receivers having a bevelled end solely on an optical launch side of the GRIN rod lens.