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:
Feb. 28, 2006
Filed:
Mar. 28, 2003
Katsuhiko Kurumada, Tokyo, JP;
Toshiaki Tamamura, Tokyo, JP;
Masatoshi Kanaya, Tokyo, JP;
Shigendo Nishi, Tokyo, JP;
Keiichi Akagawa, Kamakura, JP;
Katsuhiko Kurumada, Tokyo, JP;
Toshiaki Tamamura, Tokyo, JP;
Masatoshi Kanaya, Tokyo, JP;
Shigendo Nishi, Tokyo, JP;
Keiichi Akagawa, Kamakura, JP;
NTT Electronics Corporation, Tokyo, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A waveguide type optical device performs such monitoring as detection of a relative position of an insert plate to a groove. The waveguide type optical device comprises a groove disposed at an intersection position of a first optical waveguide and a second optical waveguide; an insert plate disposed to be insertable into the groove; means for applying a static magnetic field such that a vector product of a velocity vector (A) of the insert plate and its magnetic field vector (B) is nonzero; a cantilever that has electrical wiring including therein a wiring part lying in a direction perpendicular to both the velocity vector and the magnetic field vector and that supports the insert plate; and means for detecting a relative position of the insert plate to the groove by detecting a current induced in the electrical wiring.