JPS574564A - Optical device for calibrating laser range finder - Google Patents

Optical device for calibrating laser range finder

Info

Publication number
JPS574564A
JPS574564A JP7774780A JP7774780A JPS574564A JP S574564 A JPS574564 A JP S574564A JP 7774780 A JP7774780 A JP 7774780A JP 7774780 A JP7774780 A JP 7774780A JP S574564 A JPS574564 A JP S574564A
Authority
JP
Japan
Prior art keywords
range finder
laser range
measured
time
delay time
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP7774780A
Other languages
Japanese (ja)
Other versions
JPS6319832B2 (en
Inventor
Yasuji Suzaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7774780A priority Critical patent/JPS574564A/en
Publication of JPS574564A publication Critical patent/JPS574564A/en
Publication of JPS6319832B2 publication Critical patent/JPS6319832B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/497—Means for monitoring or calibrating
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2861—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using fibre optic delay lines and optical elements associated with them, e.g. for use in signal processing, e.g. filtering

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

PURPOSE:To enable to measure and calibrate the delay time of the laser range finder accurately and simply by using an optical fiber having the input and output terminals housed in a constant temperature oven. CONSTITUTION:Input and output terminals 27 and 28 are attached to the optical fiber 29 having a predetermined length. The fiber 29 is housed in the constant temperature oven 211, and a delay line which is not subjected to the ambient temperature is formed. The optical pulses from a transmitter 21 of the laser range finder whose delay time is to be measured is fed to the fiber 29 from the input terminal 27, and the output from the output terminal 28 is received by receivers 22 and 23. The difference between the time of said output signal and the time of the laser start signal is measured by a time interval counter 24, and the delay time of the range finder is measured. In this constitution, the delay time of the laser range finder can be accurately and simply measured and calibrated.
JP7774780A 1980-06-11 1980-06-11 Optical device for calibrating laser range finder Granted JPS574564A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7774780A JPS574564A (en) 1980-06-11 1980-06-11 Optical device for calibrating laser range finder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7774780A JPS574564A (en) 1980-06-11 1980-06-11 Optical device for calibrating laser range finder

Publications (2)

Publication Number Publication Date
JPS574564A true JPS574564A (en) 1982-01-11
JPS6319832B2 JPS6319832B2 (en) 1988-04-25

Family

ID=13642499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7774780A Granted JPS574564A (en) 1980-06-11 1980-06-11 Optical device for calibrating laser range finder

Country Status (1)

Country Link
JP (1) JPS574564A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998023972A1 (en) * 1996-11-26 1998-06-04 Precilaser Meter rule using laser diode for accurate measuring
EP0723168A3 (en) * 1995-01-23 1998-07-15 Siemens Aktiengesellschaft Adjustable optical delay line
WO1997040342A3 (en) * 1996-04-24 1998-07-30 Cyra Technologies Inc Integrated system for imaging and modeling three-dimensional objects
US6420698B1 (en) * 1997-04-24 2002-07-16 Cyra Technologies, Inc. Integrated system for quickly and accurately imaging and modeling three-dimensional objects
US6901673B1 (en) 2004-05-20 2005-06-07 The Boeing Company Tie-in device for the correlation of coordinate systems

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0723168A3 (en) * 1995-01-23 1998-07-15 Siemens Aktiengesellschaft Adjustable optical delay line
US6734849B2 (en) 1996-04-24 2004-05-11 Cyra Technologies, Inc. Integrated system for quickly and accurately imaging and modeling three-dimensional objects
WO1997040342A3 (en) * 1996-04-24 1998-07-30 Cyra Technologies Inc Integrated system for imaging and modeling three-dimensional objects
US5988862A (en) * 1996-04-24 1999-11-23 Cyra Technologies, Inc. Integrated system for quickly and accurately imaging and modeling three dimensional objects
US6246468B1 (en) 1996-04-24 2001-06-12 Cyra Technologies Integrated system for quickly and accurately imaging and modeling three-dimensional objects
US6330523B1 (en) 1996-04-24 2001-12-11 Cyra Technologies, Inc. Integrated system for quickly and accurately imaging and modeling three-dimensional objects
US6473079B1 (en) 1996-04-24 2002-10-29 Cyra Technologies, Inc. Integrated system for quickly and accurately imaging and modeling three-dimensional objects
US6512518B2 (en) 1996-04-24 2003-01-28 Cyra Technologies, Inc. Integrated system for quickly and accurately imaging and modeling three-dimensional objects
US6847462B1 (en) 1996-04-24 2005-01-25 Leica Geosystems Hds, Inc. Integrated system for quickly and accurately imaging and modeling three-dimensional objects
US7184036B2 (en) 1996-04-24 2007-02-27 Leica Geosystems Hds Llc Integrated system for quickly and accurately imaging and modeling three-dimensional objects
US7215430B2 (en) 1996-04-24 2007-05-08 Leica Geosystems Hds Llc Integrated system for quickly and accurately imaging and modeling three-dimensional objects
WO1998023972A1 (en) * 1996-11-26 1998-06-04 Precilaser Meter rule using laser diode for accurate measuring
US6420698B1 (en) * 1997-04-24 2002-07-16 Cyra Technologies, Inc. Integrated system for quickly and accurately imaging and modeling three-dimensional objects
US6901673B1 (en) 2004-05-20 2005-06-07 The Boeing Company Tie-in device for the correlation of coordinate systems

Also Published As

Publication number Publication date
JPS6319832B2 (en) 1988-04-25

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