Path length controller piezo/wireboard bonding pattern

Details Path length controller piezo/wireboard bonding pattern Path length controller piezo/wireboard bonding pattern

1997-10-20

1998-11-17

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1966

Patent

active

058384405

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.

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