GB2022823A - A Device for Determining the Quality of the Finish Optical Surfaces - Google Patents

A Device for Determining the Quality of the Finish Optical Surfaces

Info

Publication number
GB2022823A
GB2022823A GB7918113A GB7918113A GB2022823A GB 2022823 A GB2022823 A GB 2022823A GB 7918113 A GB7918113 A GB 7918113A GB 7918113 A GB7918113 A GB 7918113A GB 2022823 A GB2022823 A GB 2022823A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
quality
determining
passes
finish
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.)
Withdrawn
Application number
GB7918113A
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.)
Compagnie Industriel des Lasers CILAS SA
Original Assignee
Compagnie Industriel des Lasers CILAS SA
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 Compagnie Industriel des Lasers CILAS SA filed Critical Compagnie Industriel des Lasers CILAS SA
Publication of GB2022823A publication Critical patent/GB2022823A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • G01N21/474—Details of optical heads therefor, e.g. using optical fibres

Abstract

A device for determining the quality of the finish of optical surfaces includes successively a laser generator (1) for generating a beam (6) which passes through at least one optical surface (8, 9) to be analysed, a converging lens (10), a diaphragm (12) disposed in a focal plane, and means (14 to 19) for measuring the ratio between the light intensity which passes through the aperture (13) of the diaphragm and that stopped by the diaphragm. The apparatus may be used for determining the quality of the finish of transparent plates with parallel or spherical surfaces, or, with modifications (Fig. 3) for testing reflecting surfaces. If the axis of the emergent beam (25) is not precisely aligned with the diaphragm (12), means (24, 26) may be provided for scanning the spot (13) over the diaphragm (12) and for activating the ratio calculator (18) at the instant when the signal generated by the sensor (14) passes through a peak. <IMAGE>
GB7918113A 1978-06-07 1979-05-24 A Device for Determining the Quality of the Finish Optical Surfaces Withdrawn GB2022823A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7817009A FR2428238A1 (en) 1978-06-07 1978-06-07 DEVICE FOR DETERMINING THE QUALITY OF THE POLISH OF OPTICAL SURFACES

Publications (1)

Publication Number Publication Date
GB2022823A true GB2022823A (en) 1979-12-19

Family

ID=9209188

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7918113A Withdrawn GB2022823A (en) 1978-06-07 1979-05-24 A Device for Determining the Quality of the Finish Optical Surfaces

Country Status (7)

Country Link
BE (1) BE876305A (en)
CH (1) CH629299A5 (en)
DE (1) DE2922163A1 (en)
FR (1) FR2428238A1 (en)
GB (1) GB2022823A (en)
IT (1) IT7968223A0 (en)
NL (1) NL7904409A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2593599A1 (en) * 1986-01-29 1987-07-31 France Etat Ponts Chaussees METHOD AND DEVICE FOR NON-CONTACT DETERMINATION OF SURFACE RELIEF
EP0366352A1 (en) * 1988-10-25 1990-05-02 BAUSCH &amp; LOMB BERMUDA TECHNOLOGY LTD Measuring surface quality of a lens
CN106164739A (en) * 2013-06-19 2016-11-23 优化扫描有限公司 Optical scanner and scanned optics of lens probe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4229349C2 (en) * 1992-09-05 1995-05-24 Schoeller Felix Jun Papier Method and arrangement for measuring the optical surface quality of reflective materials and the optical quality of transparent materials
DE102010039549B4 (en) * 2010-08-20 2014-11-06 Tu Bergakademie Freiberg Method and spectrometer for optical characterization of a transparent medium

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3245306A (en) * 1961-10-05 1966-04-12 Aluminum Co Of America Photometer and method
US3734626A (en) * 1972-01-14 1973-05-22 Control Data Corp Light apparatus for testing surfaces
US3804521A (en) * 1972-02-22 1974-04-16 Itek Corp Optical device for measuring surface roughness
CH552197A (en) * 1972-11-24 1974-07-31 Bbc Brown Boveri & Cie DEVICE FOR MEASURING THE ROUGHNESS OF A SURFACE.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2593599A1 (en) * 1986-01-29 1987-07-31 France Etat Ponts Chaussees METHOD AND DEVICE FOR NON-CONTACT DETERMINATION OF SURFACE RELIEF
EP0234997A1 (en) * 1986-01-29 1987-09-02 ETAT FRANCAIS représenté par Le Ministère de l'Urbanisme et du Logement LABORATOIRE CENTRAL DES PONTS ET CHAUSSEES Contactless surface profile determination method
US4762419A (en) * 1986-01-29 1988-08-09 Laboratoire Central Des Ponts Et Chaussees Method of determining surface relief without making contact therewith
EP0366352A1 (en) * 1988-10-25 1990-05-02 BAUSCH &amp; LOMB BERMUDA TECHNOLOGY LTD Measuring surface quality of a lens
AU622939B2 (en) * 1988-10-25 1992-04-30 Bausch & Lomb Bermuda Technology Ltd Measuring surface quality of a lens
CN106164739A (en) * 2013-06-19 2016-11-23 优化扫描有限公司 Optical scanner and scanned optics of lens probe

Also Published As

Publication number Publication date
DE2922163A1 (en) 1979-12-13
NL7904409A (en) 1979-12-11
BE876305A (en) 1979-11-19
IT7968223A0 (en) 1979-06-06
CH629299A5 (en) 1982-04-15
FR2428238B1 (en) 1981-12-11
FR2428238A1 (en) 1980-01-04

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)