Abstract: The present invention relates to an optic seismic MEMS sensor. More specifically, a proof mass is supported by a frame having supporting beams. The proof mass is positioned within the frame and has a hinged attachment to the beams. The proof mass has a sensor gap having a first reflector and a second reflector positioned at opposing ends of the sensor gap. An optical fiber injects light into the sensor gap and light is reflected to determine seismic movement of the proof mass with respect to the frame. Stops are provided for limiting the movement of the proof mass to minimize strain on the attachment of the beams and the proof mass.

Abstract: The present invention relates to an optic seismic MEMS sensor. More specifically, a proof mass is supported by a frame having supporting beams. The proof mass is positioned within the frame and has a hinged attachment to the beams. The proof mass has a sensor gap having a first reflector and a second reflector positioned at opposing ends of the sensor gap. An optical fiber injects light into the sensor gap and light is reflected to determine seismic movement of the proof mass with respect to the frame. Stops are provided for limiting the movement of the proof mass to minimize strain on the attachment of the beams and the proof mass.

Abstract: This invention relates to a laser gyro coupling system which utilizes a pair of resilient rings located between a plate attached to the laser dither suspension mechanism and the lower surface of a ring laser to form a reservoir for a viscous fluid. The coupling system permits the dither suspension mechanism to drive the ring laser at its dither frequency without transmitting stresses to the ring laser due to thermal expansion.

Abstract: An improved laser gyro dither mechanism is shown utilizing a three-spring suspension system which isolates dither vibrational energy generated within the gyro and prevents that energy from passing to the mounting case of the laser.