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:
Apr. 17, 2001
Filed:
Aug. 05, 1999
Applicant:
Inventor:
Yihao Cheng, Kanata, CA;
Assignee:
JDS Fitel Inc., Nepean, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/28 ;
U.S. Cl.
CPC ...
G02B 6/28 ;
Abstract
This invention discloses and optical filtering arrangement wherein a filter element having a coated substrate is disposed such that its ports on one side face the substrate instead of facing the coating upon the substrate. Hence, when the filter is positioned a distance from the ports, its coating side faces away from the ports while its substrate faces the ports. In this arrangement stress applied by adhesives or solder upon the coating can be eliminated.