Patent ID: 6069699
Filing Date: 2000-05-30
Classification: G01C

Abstract:
A triaxial rate gyro, comprising:an optical block including:three communicating resonant optical cavities which form a regular octahedron having eight triangular faces, each of the cavities having four capillary segments forming a square which is perpendicular to a respective sensitive axis and having a corner which coincides and communicates with a corner of another cavity so as to form six coincident corners,three reading mirrors associated with three corners of the six coincident corners;three cavity length control mirrors associated with another three corners of the six coincident corners;a cathode chamber including three cathode capillaries respectively emerging at the three reading mirrors, andan equilibration chamber having three equilibration capillaries respectively emerging at the three cavity length control mirrors;an activation mechanism configured to drive the optical block according to an alternating motion of rotation about an activation axis; andfastening wedges disposed on central regions of chamfered edges surrounding one of the triangular faces of the octahedron,wherein the three control mirrors, the three reading mirrors, the three cathode capillaries, the three equilibration capillaries, and the fastening wedges are arranged in and around the optical block so as to have a symmetry of revolution of order 3 about a common axis of revolution merged with the activation axis.