GB2118304B - Detecting surface deviations - Google Patents

Detecting surface deviations

Info

Publication number
GB2118304B
GB2118304B GB08307348A GB8307348A GB2118304B GB 2118304 B GB2118304 B GB 2118304B GB 08307348 A GB08307348 A GB 08307348A GB 8307348 A GB8307348 A GB 8307348A GB 2118304 B GB2118304 B GB 2118304B
Authority
GB
United Kingdom
Prior art keywords
detecting surface
surface deviations
deviations
detecting
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.)
Expired
Application number
GB08307348A
Other versions
GB8307348D0 (en
GB2118304A (en
Inventor
Lionel Richard Baker
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.)
Sira Ltd
Original Assignee
Sira 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 Sira Ltd filed Critical Sira Ltd
Publication of GB8307348D0 publication Critical patent/GB8307348D0/en
Publication of GB2118304A publication Critical patent/GB2118304A/en
Application granted granted Critical
Publication of GB2118304B publication Critical patent/GB2118304B/en
Expired 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
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/2408—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring roundness

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
GB08307348A 1982-03-22 1983-03-17 Detecting surface deviations Expired GB2118304B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8208279 1982-03-22
GB8235719 1982-12-15

Publications (3)

Publication Number Publication Date
GB8307348D0 GB8307348D0 (en) 1983-04-27
GB2118304A GB2118304A (en) 1983-10-26
GB2118304B true GB2118304B (en) 1986-01-15

Family

ID=26282322

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08307348A Expired GB2118304B (en) 1982-03-22 1983-03-17 Detecting surface deviations

Country Status (1)

Country Link
GB (1) GB2118304B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629319A (en) * 1984-02-14 1986-12-16 Diffracto Ltd. Panel surface flaw inspection
US4920385A (en) * 1984-02-14 1990-04-24 Diffracto Ltd. Panel surface flaw inspection
US5206700A (en) * 1985-03-14 1993-04-27 Diffracto, Ltd. Methods and apparatus for retroreflective surface inspection and distortion measurement
IT1216398B (en) * 1986-07-03 1990-02-28 Ugo Licinio ELECTRONIC CORRECTOR OF DEFECTS OF CURVATURE ON THE IMAGE, FOR TELESCOPES SUPPLIED WITH LIGHT CATAPOTTRIC ELEMENTS, LARGE DIAMETER, TO BE USED ALSO IN ORBIT.
DE3774570D1 (en) * 1987-04-22 1991-12-19 Pharmacia Diagnostics Inc., Fairfield, N.J., Us
FR2658287B1 (en) * 1990-02-14 1994-07-22 Reosc METHOD AND DEVICE FOR OBTAINING A REPRESENTATION OF THE ACTUAL SURFACE OF AN ASPHERIC, SPHERICAL OR PLANAR MIRROR IN PARTICULAR WITH A VIEW TO CONTROLLING CERTAIN OPTICAL PARAMETERS OF THIS MIRROR.
US5168322A (en) * 1991-08-19 1992-12-01 Diffracto Ltd. Surface inspection using retro-reflective light field
US5225890A (en) * 1991-10-28 1993-07-06 Gencorp Inc. Surface inspection apparatus and method
CN106767536B (en) * 2017-01-17 2019-04-12 长春工程学院 A kind of aspheric surface detection device and method based on closest to circle theory

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB602459A (en) * 1944-11-11 1948-05-27 William Ewart Williams Improvements in or relating to interferometric testing apparatus
US3747219A (en) * 1971-01-18 1973-07-24 Atomic Energy Commission Gauging system

Also Published As

Publication number Publication date
GB8307348D0 (en) 1983-04-27
GB2118304A (en) 1983-10-26

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940317