WO2001020277A1 - Method and apparatus for determining characteristics of a laser beam spot - Google Patents

Method and apparatus for determining characteristics of a laser beam spot Download PDF

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Publication number
WO2001020277A1
WO2001020277A1 PCT/US2000/025113 US0025113W WO0120277A1 WO 2001020277 A1 WO2001020277 A1 WO 2001020277A1 US 0025113 W US0025113 W US 0025113W WO 0120277 A1 WO0120277 A1 WO 0120277A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser beam
photodetector
scanning
output signal
determining
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.)
Ceased
Application number
PCT/US2000/025113
Other languages
English (en)
French (fr)
Inventor
Kingman Yee
Terrance N. Clapham
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.)
AMO Manufacturing USA LLC
Original Assignee
Visx Inc
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 Visx Inc filed Critical Visx Inc
Priority to CA002384804A priority Critical patent/CA2384804C/en
Priority to AU73778/00A priority patent/AU7377800A/en
Priority to MXPA02002503A priority patent/MXPA02002503A/es
Priority to JP2001523814A priority patent/JP4740500B2/ja
Priority to EP00961885.1A priority patent/EP1224442B1/en
Priority to BR0013982-3A priority patent/BR0013982A/pt
Publication of WO2001020277A1 publication Critical patent/WO2001020277A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/008—Methods or devices for eye surgery using laser
    • A61F9/00802—Methods or devices for eye surgery using laser for photoablation
    • A61F9/00814—Laser features or special beam parameters therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • B23K26/705—Beam measuring device
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00681—Aspects not otherwise provided for
    • A61B2017/00725—Calibration or performance testing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/008—Methods or devices for eye surgery using laser
    • A61F2009/00855—Calibration of the laser system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/008—Methods or devices for eye surgery using laser
    • A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
    • A61F2009/00872—Cornea
    • 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
    • G01J2001/4261—Scan through beam in order to obtain a cross-sectional profile of the beam

Definitions

  • the calibration tool will often provide signals indicating beam spot size, shape, energy dist ⁇ bution, and/or location These signals may be used to adjust the planned ablation protocol of the beam delivery system Specifically, using the sensed information, an algo ⁇ thm for calculating the locations and number of shots can be revised, thereby increasing the accuracy of the resculptmg procedure This calibration information can be used to adjust the ablation algonthm immediately before and/or du ⁇ ng each ablation procedure.
  • tool 100 can be used to align the targeting optics of the laser delivery system Specifically, after locating center 25 of laser beam spot 20 as it is scanned across photodetector 40, the beam delivery system (including galvanometer 120) can be precisely aligned to compensate for any difference between the position of the laser beam as determined by targeting optics 122, and that indicated by tool 100
  • a suitable mate ⁇ al for tool 100 which fluoresces but does not ablate is prefe ⁇ ed
  • mate ⁇ al may compnse a white stock paper or a white business card
  • a suitable fluorescent plate matenal which can be purchased from Startech Inc, of Connecticut can be used
  • measurement/alignment tool 100 comp ⁇ ses a screen 105 which fluoresces in response to laser light incident thereon, as illustrated in Figs 14 to 15B Refemng to Fig 14, laser beam 18 is directed incident to screen 105, causing screen 105 to fluoresce in the region of beam spot 20
  • An operator 200 looking through targeting optics

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Ophthalmology & Optometry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Biomedical Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Laser Surgery Devices (AREA)
  • Lasers (AREA)
PCT/US2000/025113 1999-09-14 2000-09-13 Method and apparatus for determining characteristics of a laser beam spot Ceased WO2001020277A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CA002384804A CA2384804C (en) 1999-09-14 2000-09-13 Method and apparatus for determining characteristics of a laser beam spot
AU73778/00A AU7377800A (en) 1999-09-14 2000-09-13 Method and apparatus for determining characteristics of a laser beam spot
MXPA02002503A MXPA02002503A (es) 1999-09-14 2000-09-13 Metodo y aparato para determinar las caracteristicas de una zona de haz laser.
JP2001523814A JP4740500B2 (ja) 1999-09-14 2000-09-13 レーザービームスポットの特性を決定する方法および装置
EP00961885.1A EP1224442B1 (en) 1999-09-14 2000-09-13 Method and apparatus for determining characteristics of a laser beam spot
BR0013982-3A BR0013982A (pt) 1999-09-14 2000-09-13 Método para determinar uma caracterìstica de um feixe de laser, aparelho para calibrar um sistema de fornecimento de feixe de laser, e, método para calibrar um sistema de fornecimento de feixe de laser de varredura

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/395,809 1999-09-14
US09/395,809 US6559934B1 (en) 1999-09-14 1999-09-14 Method and apparatus for determining characteristics of a laser beam spot

Publications (1)

Publication Number Publication Date
WO2001020277A1 true WO2001020277A1 (en) 2001-03-22

Family

ID=23564626

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/025113 Ceased WO2001020277A1 (en) 1999-09-14 2000-09-13 Method and apparatus for determining characteristics of a laser beam spot

Country Status (9)

Country Link
US (2) US6559934B1 (enExample)
EP (1) EP1224442B1 (enExample)
JP (1) JP4740500B2 (enExample)
CN (2) CN1193212C (enExample)
AU (1) AU7377800A (enExample)
BR (1) BR0013982A (enExample)
CA (1) CA2384804C (enExample)
MX (1) MXPA02002503A (enExample)
WO (1) WO2001020277A1 (enExample)

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EP1273279A3 (de) * 2001-06-15 2003-12-10 Jurca Optoelektronik GmbH & Co. KG Messeinrichtung für Strahlparameter der Bearbeitungsstrahlung einer Vorrichtung zur fotorefraktiven Korrektur von Fehlsichtigkeiten sowie Vorrichtung zur fotorefraktiven Korrektur von Fehlsichtigkeiten
JP2006522642A (ja) * 2003-04-09 2006-10-05 ヴィズイクス・インコーポレーテッド 波面較正分析器と方法
WO2006125280A1 (en) * 2005-05-27 2006-11-30 Opto Global Holdings Pty Ltd System and method for laser calibration
WO2007039207A1 (en) * 2005-09-27 2007-04-12 Bausch & Lomb Incorporated A system and method for the treatment of a patient’s eye working at high speed
EP1800637A1 (en) * 2005-12-20 2007-06-27 Alcon RefractiveHorizons, Inc. Dynamic laser beam characteristic measurement system for opthalmic surgery and associated methods
EP1496991A4 (en) * 2002-04-23 2010-01-27 Amo Mfg Usa Llc METHODS AND SYSTEMS FOR LASER CALIBRATION AND EYE TRACKING CAMERA ALIGNMENT
WO2017070473A1 (en) * 2015-10-21 2017-04-27 Optimedica Corporation Laser beam calibration and beam quality measurement in laser surgery systems
EP3450936A1 (en) * 2017-09-05 2019-03-06 Renishaw PLC Optical apparatus and method for assessing the beam profile of a non-contact tool setting apparatus

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US6559934B1 (en) * 1999-09-14 2003-05-06 Visx, Incorporated Method and apparatus for determining characteristics of a laser beam spot
US7456949B2 (en) * 1999-09-14 2008-11-25 Amo Manufacturing Usa, Llc Methods and systems for laser calibration and eye tracker camera alignment
DE10024079A1 (de) * 2000-05-17 2001-11-22 Asclepion Meditec Ag Verfahren und Vorrichtung zur Kontrolle der Energie und/oder Position eines gepulsten und gescannten Laserstrahles
US20030222143A1 (en) * 2002-06-04 2003-12-04 Mitchell Phillip V. Precision laser scan head
US7846152B2 (en) 2004-03-24 2010-12-07 Amo Manufacturing Usa, Llc. Calibrating laser beam position and shape using an image capture device
US8968279B2 (en) * 2003-03-06 2015-03-03 Amo Manufacturing Usa, Llc Systems and methods for qualifying and calibrating a beam delivery system
DE10333562A1 (de) * 2003-07-23 2005-02-17 Carl Zeiss Meditec Ag Verfahren, Vorrichtung und System zur Bestimmung eines Systemparameters eines Laserstrahl-Behandlungssystems
US7577296B2 (en) * 2004-01-30 2009-08-18 The Boeing Company System and method for evaluating laser projection equipment
US8289384B2 (en) * 2004-06-07 2012-10-16 Nuflare Technology, Inc. Electron beam displacement measuring method, electron beam displacement measuring device, and electron beam recording apparatus
DE102004030607A1 (de) * 2004-06-24 2006-02-02 Siemens Ag Verfahren und Vorrichtung zum Vermessen des Strahlprofils eines Laserstrahls, Laserbearbeitungsmaschine
EP1778356A4 (en) * 2004-07-09 2009-10-28 Amo Mfg Usa Llc LASER PULSE POSITION MONITOR FOR SCANNING LASER EYE OPERATION SYSTEMS
US9352415B2 (en) 2005-02-15 2016-05-31 Carl Zeiss Meditec Ag Method for generating an ablation program, method for ablating a body and means for carrying out said method
JP4708050B2 (ja) * 2005-03-02 2011-06-22 株式会社ニデック 角膜手術装置
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US7811280B2 (en) * 2006-01-26 2010-10-12 Amo Manufacturing Usa, Llc. System and method for laser ablation calibration
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CN100494883C (zh) * 2006-11-09 2009-06-03 中国科学院半导体研究所 一种测量小光斑尺寸的方法
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CN102243062B (zh) * 2011-04-13 2013-07-31 西安理工大学 超短脉冲激光的光斑中心坐标的测量装置及方法
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CN1641326A (zh) 2005-07-20
US6559934B1 (en) 2003-05-06
CN1378642A (zh) 2002-11-06
US7001375B2 (en) 2006-02-21
CA2384804A1 (en) 2001-03-22
JP4740500B2 (ja) 2011-08-03
EP1224442B1 (en) 2013-04-24
CN100476378C (zh) 2009-04-08
EP1224442A1 (en) 2002-07-24
US20030149426A1 (en) 2003-08-07
MXPA02002503A (es) 2002-07-30
EP1224442A4 (en) 2008-04-02
BR0013982A (pt) 2002-05-14
CN1193212C (zh) 2005-03-16
JP2003509681A (ja) 2003-03-11
AU7377800A (en) 2001-04-17
CA2384804C (en) 2006-08-01

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