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:
Mar. 04, 2003
Filed:
Jan. 31, 2001
Yongsheng Liu, San Jose, CA (US);
Vincent Nguyen, San Jose, CA (US);
Avanex Corporation, Fremont, CA (US);
Abstract
An optical variable attenuator having a reflector in a first position, and a mechanical device for positioning the reflector from the first position to a second position is disclosed. The optical variable mechanical device comprises a first and second guide slots, a moving part, and a screw, where a first guide slot is placed parallel to the second guide slot. The moving part is placed in between and extending in the parallel direction to the first and second guide slots, the screw extending into and away from the moving part. Optionally, a lock pin is used to mount a moving part to avoid injecting any tip and tilt errors. The lock pin is guided by two machined slots on a main body of a variable optical attenuator. Alternatively, two springs loaded balls are positioned in tight contact of the guide slots on the move part, instead of a lock pin.