JPS5666713A - Measuring device of beam diameter of laser light - Google Patents

Measuring device of beam diameter of laser light

Info

Publication number
JPS5666713A
JPS5666713A JP14374079A JP14374079A JPS5666713A JP S5666713 A JPS5666713 A JP S5666713A JP 14374079 A JP14374079 A JP 14374079A JP 14374079 A JP14374079 A JP 14374079A JP S5666713 A JPS5666713 A JP S5666713A
Authority
JP
Japan
Prior art keywords
photodetector
output
fed
light
detector output
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.)
Pending
Application number
JP14374079A
Other languages
Japanese (ja)
Inventor
Akira Maeda
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP14374079A priority Critical patent/JPS5666713A/en
Publication of JPS5666713A publication Critical patent/JPS5666713A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4257—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to monitoring the characteristics of a beam, e.g. laser beam, headlamp beam

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

PURPOSE:To obtain the profile accurate beam, by providing the 1st photodetector receiving laser light from nonoutput side of a laser resonator and the 2nd photodetector having a light shield plate having aperture scanned orthogonal to the optical path from the output side, and measuring the beam diameter with the ratio of the 2nd detector output to the 1st detector output. CONSTITUTION:The light from nonoutput side of a laser resonator 1 is detected at the 1st photodetector, and the output is fed to a division circuit 11 via an amplifier 9. On the other hand, a light shielding plate having an aperture 5 about 50mu in diameter is fixed to the 2nd photodetector 3 provided at the output side of the laser resonator 1. The 2nd photodetector is scanned toward the arrow A orthogonal to the optical path with a motor 6 via a rope 7 and a spring 8. The output is fed to the division circuit 11 via an amplifier 10. The time mark signal of a photocoupler 14 by a chopper fitted to the motor 6 is fed to an XY recorder 12, which displays accurate profile of laser light beam by using the signal of the ratio of the 2nd detector output from the divider 11 to the 1st detector output.
JP14374079A 1979-11-05 1979-11-05 Measuring device of beam diameter of laser light Pending JPS5666713A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14374079A JPS5666713A (en) 1979-11-05 1979-11-05 Measuring device of beam diameter of laser light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14374079A JPS5666713A (en) 1979-11-05 1979-11-05 Measuring device of beam diameter of laser light

Publications (1)

Publication Number Publication Date
JPS5666713A true JPS5666713A (en) 1981-06-05

Family

ID=15345907

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14374079A Pending JPS5666713A (en) 1979-11-05 1979-11-05 Measuring device of beam diameter of laser light

Country Status (1)

Country Link
JP (1) JPS5666713A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58139032A (en) * 1982-02-15 1983-08-18 Toshiba Corp Device for measuring diameter of laser light beam
JP2003509681A (en) * 1999-09-14 2003-03-11 ヴィスクス インコーポレイテッド Method and apparatus for determining characteristics of a laser beam spot
WO2003090867A1 (en) 2002-04-23 2003-11-06 Visx, Inc. Methods and systems for laser calibration and eye tracker camera alignment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58139032A (en) * 1982-02-15 1983-08-18 Toshiba Corp Device for measuring diameter of laser light beam
JP2003509681A (en) * 1999-09-14 2003-03-11 ヴィスクス インコーポレイテッド Method and apparatus for determining characteristics of a laser beam spot
JP4740500B2 (en) * 1999-09-14 2011-08-03 ヴィスクス インコーポレイテッド Method and apparatus for determining the characteristics of a laser beam spot
WO2003090867A1 (en) 2002-04-23 2003-11-06 Visx, Inc. Methods and systems for laser calibration and eye tracker camera alignment
EP1496991A1 (en) * 2002-04-23 2005-01-19 Visx, Inc. Methods and systems for laser calibration and eye tracker camera alignment
EP1496991A4 (en) * 2002-04-23 2010-01-27 Amo Mfg Usa Llc Methods and systems for laser calibration and eye tracker camera alignment

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