CA2146300A1 - Refractive Index Measurement of Spectacle Lenses - Google Patents

Refractive Index Measurement of Spectacle Lenses

Info

Publication number
CA2146300A1
CA2146300A1 CA2146300A CA2146300A CA2146300A1 CA 2146300 A1 CA2146300 A1 CA 2146300A1 CA 2146300 A CA2146300 A CA 2146300A CA 2146300 A CA2146300 A CA 2146300A CA 2146300 A1 CA2146300 A1 CA 2146300A1
Authority
CA
Canada
Prior art keywords
retroreflector
translatable
response
spectacle lenses
sample beam
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
CA2146300A
Other languages
French (fr)
Other versions
CA2146300C (en
Inventor
Thomas Hellmuth
Charles E. Campbell
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.)
Carl Zeiss Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2146300A1 publication Critical patent/CA2146300A1/en
Application granted granted Critical
Publication of CA2146300C publication Critical patent/CA2146300C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/0228—Testing optical properties by measuring refractive power
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02001—Interferometers characterised by controlling or generating intrinsic radiation properties
    • G01B9/02002—Interferometers characterised by controlling or generating intrinsic radiation properties using two or more frequencies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02015—Interferometers characterised by the beam path configuration
    • G01B9/02024—Measuring in transmission, i.e. light traverses the object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/0209—Low-coherence interferometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2290/00—Aspects of interferometers not specifically covered by any group under G01B9/02
    • G01B2290/15—Cat eye, i.e. reflection always parallel to incoming beam

Abstract

Apparatus for measuring the index of refraction of glass such as spectacle lenses without measuring the surface geometry of the glass. In particular, an embodiment of the present invention includes: (a) a source of a substantially spatially coherent beam of radiation; (b) a beamsplitter to provide a sample beam and a reference beam in response to the beam; (c) a translatable retroreflector which reflects the reference beam; (d) a holder to hold the material in the path of the sample beam, the holder including a retroreflector which reflects the sample beam back through the material and a caliper apparatus to measure the thickness of the material where the sample beam passes through; (e) a detector which detects the reflected reference beam and the reflected sample beam to produce a detector output signal; and (f) an analyzer which determines a position of the translatable retroreflector in response to the detector output signal and which determines the index of refraction of the material in response to the position of the translatable reflector means and the thickness of the material.
CA002146300A 1994-04-05 1995-04-04 Refractive index measurement of spectacle lenses Expired - Fee Related CA2146300C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22343494A 1994-04-05 1994-04-05
US08/223,434 1994-04-05

Publications (2)

Publication Number Publication Date
CA2146300A1 true CA2146300A1 (en) 1995-10-06
CA2146300C CA2146300C (en) 1999-06-15

Family

ID=22836480

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002146300A Expired - Fee Related CA2146300C (en) 1994-04-05 1995-04-04 Refractive index measurement of spectacle lenses

Country Status (6)

Country Link
US (1) US5469261A (en)
EP (1) EP0676629B1 (en)
JP (1) JP3645933B2 (en)
CA (1) CA2146300C (en)
DE (1) DE69525481D1 (en)
ES (1) ES2171474T3 (en)

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US5640270A (en) * 1996-03-11 1997-06-17 Wyko Corporation Orthogonal-scanning microscope objective for vertical-scanning and phase-shifting interferometry
JP3459327B2 (en) * 1996-06-17 2003-10-20 理化学研究所 Method and apparatus for measuring layer thickness and refractive index of laminated structure
US5855074A (en) * 1997-12-07 1999-01-05 Visionix Ltd. Methods and apparatus for measuring and mapping opthalmic elements
JPH11170275A (en) * 1997-12-17 1999-06-29 Topcon Corp Lens molding apparatus and tool
US5975697A (en) * 1998-11-25 1999-11-02 Oti Ophthalmic Technologies, Inc. Optical mapping apparatus with adjustable depth resolution
US6546272B1 (en) 1999-06-24 2003-04-08 Mackinnon Nicholas B. Apparatus for in vivo imaging of the respiratory tract and other internal organs
US6618152B2 (en) * 2000-05-09 2003-09-09 Fuji Photo Film Co., Ltd. Optical coherence tomography apparatus using optical-waveguide structure which reduces pulse width of low-coherence light
US7747315B2 (en) * 2002-01-15 2010-06-29 Board Of Regents, The University Of Texas System Methods and compositions to reduce scattering of light during therapeutic and diagnostic imaging procedures
JP3578144B2 (en) * 2002-01-16 2004-10-20 住友電気工業株式会社 Apparatus and method for measuring optical characteristics of diffractive optical parts
GB2385417B (en) * 2002-03-14 2004-01-21 Taylor Hobson Ltd Surface profiling apparatus
EP1485675B1 (en) * 2002-03-14 2015-01-07 Taylor Hobson Limited Surface profiling apparatus
US7113818B2 (en) * 2002-04-08 2006-09-26 Oti Ophthalmic Technologies Inc. Apparatus for high resolution imaging of moving organs
CA2390072C (en) 2002-06-28 2018-02-27 Adrian Gh Podoleanu Optical mapping apparatus with adjustable depth resolution and multiple functionality
DE10333426B4 (en) * 2003-07-17 2006-02-09 Carl Zeiss Method and device for visualizing a sign on a spectacle lens
CN1902639A (en) * 2003-11-10 2007-01-24 科技创新有限责任公司 Digital imaging assembly and methods thereof
FR2878979B1 (en) * 2004-12-03 2007-04-20 Essilor Int METHOD AND DEVICE FOR MEASURING THE POWER OF AN OPHTHALMIC LENS BY GLOBAL CONTACT-FREE GLOBAL MEASUREMENT AND COMBINED PALPAGE
EP1864078B1 (en) * 2005-03-03 2017-05-03 Ilko Ilev Confocal fiber-optic laser device and method for intraocular lens power measurement
US7384146B2 (en) * 2005-06-28 2008-06-10 Carestream Health, Inc. Health care kiosk having automated diagnostic eye examination and a fulfillment remedy based thereon
GB2429522A (en) * 2005-08-26 2007-02-28 Univ Kent Canterbury Optical mapping apparatus
JP5168168B2 (en) * 2009-01-22 2013-03-21 パナソニック株式会社 Refractive index measuring device
EP2551634A1 (en) * 2011-07-26 2013-01-30 Alicona Imaging GmbH Retroflective sample holder
DE102011119806B4 (en) 2011-11-25 2020-10-15 Carl Zeiss Vision International Gmbh Method and device for making a marking on a spectacle lens visible
CN103512730B (en) * 2013-10-08 2017-02-01 中国计量科学研究院 Device for measuring back vertex power of lens
CN103487239B (en) * 2013-10-11 2015-11-25 杭州奥普特光学有限公司 Hand-held eyeglass surface focal power measurement device
US10712233B2 (en) 2015-05-10 2020-07-14 6 Over 6 Vision Ltd. Apparatus, system and method of determining one or more optical parameters of a lens
US10670494B2 (en) 2015-05-10 2020-06-02 6 Over 6 Vision Ltd. Apparatus, system and method of determining one or more optical parameters of a lens
CA3011793A1 (en) * 2016-01-23 2017-07-27 6 Over 6 Vision Ltd. Apparatus, system and method of determining one or more optical parameters of a lens
CN110514411B (en) * 2019-09-10 2024-02-02 宁波法里奥光学科技发展有限公司 Lens refractive index detection device and method
KR20230140199A (en) * 2022-03-29 2023-10-06 서울대학교산학협력단 Apparatus for measuring thin film thickness and thereof method

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Publication number Priority date Publication date Assignee Title
US3539262A (en) * 1968-06-11 1970-11-10 Us Army Optical interferometer for high speed plasma diagnostics
US4072422A (en) * 1975-10-27 1978-02-07 Canon Kabushiki Kaisha Apparatus for interferometrically measuring the physical properties of test object
US4180325A (en) * 1977-07-05 1979-12-25 Humphrey Instruments, Inc. Lens meter with automated readout
SU1173177A1 (en) * 1983-06-03 1985-08-15 Новосибирский Институт Инженеров Геодезии,Аэрофотосъемки И Картографии Device for measuring object displacement and index of transparent media refraction
JPS61178635A (en) * 1985-02-04 1986-08-11 Canon Inc Interference apparatus for measuring wave front aberration
US4685803A (en) * 1986-01-23 1987-08-11 Zygo Corporation Method and apparatus for the measurement of the refractive index of a gas
DE3703086A1 (en) * 1987-02-03 1988-08-11 Dieter Froelich Physikalische LASER INTERFEROMETER REFRACTOMETER
DE3707331A1 (en) * 1987-03-07 1988-09-15 Zeiss Carl Fa INTERFEROMETER FOR MEASURING OPTICAL PHASE DIFFERENCES
US4733967A (en) * 1987-03-19 1988-03-29 Zygo Corporation Apparatus for the measurement of the refractive index of a gas
JPS6475903A (en) * 1987-09-18 1989-03-22 Ricoh Kk Method for measuring refractive index and film thickness
US5151752A (en) * 1988-06-16 1992-09-29 Asahi Kogaku Kogyo K.K. Method of measuring refractive indices of lens and sample liquid
JP2892075B2 (en) * 1990-01-31 1999-05-17 末三 中楯 Measuring method of refractive index distribution and transmitted wavefront and measuring device used for this method
JP2672738B2 (en) * 1991-10-22 1997-11-05 ホーヤ株式会社 Refractive index measuring method and apparatus

Also Published As

Publication number Publication date
EP0676629A2 (en) 1995-10-11
JP3645933B2 (en) 2005-05-11
JPH07286939A (en) 1995-10-31
ES2171474T3 (en) 2002-09-16
EP0676629B1 (en) 2002-02-20
EP0676629A3 (en) 1997-10-29
CA2146300C (en) 1999-06-15
US5469261A (en) 1995-11-21
DE69525481D1 (en) 2002-03-28

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20140404