Ring laser gyro

Patent metadata

Field	Value
Publication number	US-8994952-B2
Application number	US-201313967761-A
Country	US
Kind code	B2
Filing date	Aug 15, 2013
Priority date	Sep 11, 2012
Publication date	Mar 31, 2015
Grant date	Mar 31, 2015

Abstract

A ring laser gyro with no piezoelectric elements for dither detection includes a laser beam receiving unit for receiving a laser beam taken out of a gyro block, a laser beam intensity measuring unit for measuring the intensity of the laser beam received by the laser beam receiving unit, a dither mechanism, a dither control unit for driving the dither mechanism, and a gyro case housing the gyro block, wherein the laser beam receiving unit is secured to the gyro case, the laser beam receiving unit has a laser beam receiving surface for receiving the laser beam from the gyro block to detect a laser beam receiving position on the laser beam receiving surface and output positional information indicating the laser beam receiving position. The dither control unit drives the dither mechanism on the basis of information indicating the amplitude of the laser beam receiving position obtained from the positional information.

First claim

What is claimed is:

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;
where…

Assignees

• Japan Aviation Electron

Inventors

• Iizuka Kei
• Yoshioka Kazunori
• Yamamoto Naoki

Classifications

• G01C19/70

  Physics · mapped topic

• G01C19/68 Primary

  Physics · mapped topic