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:
Jan. 01, 2013
Filed:
Nov. 27, 2007
Haijun Yuan, Pleasanton, CA (US);
Xuehua Wu, Union City, CA (US);
Christopher Lin, El Cerrito, CA (US);
Giovanni Barbarossa, Saratoga, CA (US);
Haijun Yuan, Pleasanton, CA (US);
Xuehua Wu, Union City, CA (US);
Christopher Lin, El Cerrito, CA (US);
Giovanni Barbarossa, Saratoga, CA (US);
Oclaro (North America), Inc., San Jose, CA (US);
Abstract
An optical device for a wavelength division multiplexing system has a telecentric lens system and a signal-processing optical element, where the signal-processing optical element performs switching, attenuation, or other optical signal processing for the optical device. The telecentric lens system acts as a self-compensating optical system to minimize sensitivity of the optical device to unwanted displacement of an input image from the optical axis of the optical device. The optical device may include multiple telecentric lens systems, in which case the optical device is also less sensitive to precise alignment between the telecentric lens systems.