Patent ID: 8994952
Filing Date: 2015-03-31
Classification: G01C

Abstract:
1. A ring laser gyro comprising: a laser beam receiver which receives a laser beam taken out of a gyro block for oscillating laser beams; a laser beam intensity measuring unit which measures intensity of the laser beam received by the laser beam receiver; a dither mechanism for applying vibrations in laser beam propagating directions to the gyro block; a dither controller which drives the dither mechanism; and a gyro case housing the gyro block; wherein the laser beam receiver is secured to the gyro case; the laser beam receiver has a laser beam receiving surface for receiving the laser beam from the gyro block and outputs positional information indicating a laser beam receiving position by detecting the laser beam receiving position on the laser beam receiving surface; and the dither controller drives the dither mechanism on the basis of an amplitude of the laser beam receiving position obtained from the positional information.