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. 05, 2002
Filed:
Feb. 23, 2000
Yiqiang Li, Milpitas, CA (US);
Optical Coating Laboratory, Inc., Santa Rosa, CA (US);
Abstract
An optical switch using a refractive optical element ( ) to direct a light beam in selected directions upon operation of the switch. In a preferred embodiment, the refractive optical element is an optical wedge having a first portion ( ) that transmits a light beam in a selected direction, and a second portion ( ) that transmits the light beam in another direction, when the first or second portions of the optical wedge are switched into the path of the light beam. The refractive optical element is less sensitive to misalignment than a reflective element, for example. In a further embodiment, the optical wedge is combined with wavelength-selective filters ( ) and other components to provide a channel DROP and/or ADD function with high isolation.
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