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:
Jul. 20, 1999
Filed:
Apr. 22, 1997
Pierre Labeye, Grenoble, FR;
Frederic Revol-Cavalier, Grenoble, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
An optomechanical sensor for measuring or detecting an acceleration or a vibration in at least one direction. The sensor has a frame, and a flexible beam having two ends. A first end is attached to the frame and a second end is mobile in the at least one direction, in response to an acceleration movement of the frame. The flexible beam includes an optical guiding structure having an input and an output. The frame has N light collection elements, where N is an integer .gtoreq.2. The frame also includes a multi-mode coupler having an input facing the output of the optical guiding structure and N outputs, the coupler coupling an optical signal at the output of the optical guiding structure to the N light collection elements. The multi-mode coupler may also transform an input light beam having a maximum into a distribution having N maxima at the output of the coupler.