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. 17, 1998
Filed:
Oct. 20, 1997
Richard G Beaudet, Inver Grove Heights, MN (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
Disclosed is a path length control apparatus (PLC) for an optical device. The optical device, such as a ring laser gyroscope, is of the type that includes a block having an internal optical cavity that defines a closed optical path. A light source directs a light beam into the optical path, and a plurality of mirrors reflect the light beam about the path. The PLC includes a piezoelectric transducer (PZT) and a wireboard element. The PZT is mounted to one of the mirrors and alters, in response to a control voltage, the position of the mirror relative to the optical cavity to maintain a constant optical path length for the light beam. An adhesive having a ring shaped bonding pattern partially mechanically couples the wireboard element to the PZT so as to permit operation of the PZT free of resistance from the wireboard element.