SE8403264L - Ring laser gyro - Google Patents

Ring laser gyro

Info

Publication number
SE8403264L
SE8403264L SE8403264A SE8403264A SE8403264L SE 8403264 L SE8403264 L SE 8403264L SE 8403264 A SE8403264 A SE 8403264A SE 8403264 A SE8403264 A SE 8403264A SE 8403264 L SE8403264 L SE 8403264L
Authority
SE
Sweden
Prior art keywords
sides
gyro
mirrors
ring laser
phase
Prior art date
Application number
SE8403264A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8403264D0 (en
Inventor
D C Stjern
T M Wirt
T Council
Original Assignee
Sundstrand Optical Tech
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sundstrand Optical Tech filed Critical Sundstrand Optical Tech
Publication of SE8403264D0 publication Critical patent/SE8403264D0/en
Publication of SE8403264L publication Critical patent/SE8403264L/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
    • G01C19/58—Turn-sensitive devices without moving masses
    • G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
    • G01C19/66—Ring laser gyrometers
    • G01C19/661—Ring laser gyrometers details

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Gyroscopes (AREA)
  • Lasers (AREA)

Abstract

A ring laser gyro assembly in which the length of closed loop path cavity 12 is maximised within a compact long narrow structure for use in a borehole has a body 10 of polygonal shape with two sides 30, 32 being substantially longer than the remaining sides 34, 36, 38, 40, each of the mirrors 20, 22, 24, 26 being disposed on a different one of the shorter sides. Lock-in is prevented by a mirror dither 45, 47, wherein two of the mirrors are vibrated 180 DEG out of phase, and a bias apparatus which includes two narrow flexure assemblies (50, 52) disposed adjacent the sides 30, 32 of the gyro body and piezoelectrically riven 180 DEG out of phase. Each flexure assembly comprises a pair of blades having an outer end secured to the gyro support means and an inner end coupled via mounting blocks to the gyro body. <IMAGE>
SE8403264A 1983-06-20 1984-06-19 Ring laser gyro SE8403264L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50602983A 1983-06-20 1983-06-20

Publications (2)

Publication Number Publication Date
SE8403264D0 SE8403264D0 (en) 1984-06-19
SE8403264L true SE8403264L (en) 1984-12-21

Family

ID=24012866

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8403264A SE8403264L (en) 1983-06-20 1984-06-19 Ring laser gyro

Country Status (11)

Country Link
JP (1) JPS6018981A (en)
AU (1) AU2947684A (en)
BE (1) BE899974A (en)
DE (1) DE3422889A1 (en)
FR (1) FR2548357A1 (en)
GB (1) GB2141868A (en)
IT (1) IT8448410A0 (en)
NL (1) NL8401964A (en)
NO (1) NO842455L (en)
SE (1) SE8403264L (en)
ZA (1) ZA844479B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1252551A (en) * 1984-01-09 1989-04-11 Litton Systems, Inc. Laser angular rate sensor with dithered mirrors
DE3544074A1 (en) * 1985-12-13 1987-06-19 Teldix Gmbh Device for generating rotary oscillations for ring-laser gyroscopes
JP3367614B2 (en) * 1991-10-17 2003-01-14 株式会社小松製作所 Steering wheel hydraulic drive for dump trucks

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115004A (en) * 1976-11-15 1978-09-19 Litton Systems, Inc. Counterbalanced oscillating ring laser gyro
DE2821330A1 (en) * 1977-05-18 1978-11-30 Litton Systems Inc RING LASER GYROSCOPE
US4190364A (en) * 1977-09-07 1980-02-26 The Singer Company Ring laser gyroscope
JPS5691487A (en) * 1979-12-25 1981-07-24 Kenji Aoshima Manufacture of ring laser oscillator

Also Published As

Publication number Publication date
IT8448410A0 (en) 1984-06-18
AU2947684A (en) 1985-01-03
GB2141868A (en) 1985-01-03
NO842455L (en) 1984-12-21
ZA844479B (en) 1985-04-24
SE8403264D0 (en) 1984-06-19
FR2548357A1 (en) 1985-01-04
BE899974A (en) 1984-12-20
GB8415751D0 (en) 1984-07-25
JPS6018981A (en) 1985-01-31
DE3422889A1 (en) 1984-12-20
NL8401964A (en) 1985-01-16

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Legal Events

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Effective date: 19860520