GB1532485A - Testing optical elements - Google Patents

Testing optical elements

Info

Publication number
GB1532485A
GB1532485A GB1446776A GB1446776A GB1532485A GB 1532485 A GB1532485 A GB 1532485A GB 1446776 A GB1446776 A GB 1446776A GB 1446776 A GB1446776 A GB 1446776A GB 1532485 A GB1532485 A GB 1532485A
Authority
GB
United Kingdom
Prior art keywords
test
air
optical element
measuring
optical elements
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
GB1446776A
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.)
Qioptiq Ltd
Original Assignee
Pilkington PE 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 Pilkington PE Ltd filed Critical Pilkington PE Ltd
Priority to GB1446776A priority Critical patent/GB1532485A/en
Publication of GB1532485A publication Critical patent/GB1532485A/en
Expired 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
    • G01M11/0207—Details of measuring devices
    • G01M11/0214—Details of devices holding the object to be tested
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B13/00—Measuring arrangements characterised by the use of fluids
    • G01B13/16—Measuring arrangements characterised by the use of fluids for measuring contours or curvatures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B13/00—Measuring arrangements characterised by the use of fluids
    • G01B13/22—Measuring arrangements characterised by the use of fluids for measuring roughness or irregularity of surfaces

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Eyeglasses (AREA)

Abstract

1532485 Measuring lens surface PILKINGTON P E Ltd 29 March 1977 [9 April 1976} 14467/76 Heading G1M [Also in Division G2] A method of testing the optical surface 2 of an optical element 1 e.g. a lens, comprises locating the surface 1 in closely spaced relationship with the test surface 3 of a test plate 4, feeding air through a bore 5 in the test plate to develop an air cushion between the lenses, which acts to remove dust particles and allow positioning, then stopping the fluid supply and carrying out a matching test, e.g. measuring Newtons rings. A liquid may be used instead of air. The fluid may be fed through the central hole of an annular optical element, Fig. 2 (not shown).
GB1446776A 1977-03-29 1977-03-29 Testing optical elements Expired GB1532485A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1446776A GB1532485A (en) 1977-03-29 1977-03-29 Testing optical elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1446776A GB1532485A (en) 1977-03-29 1977-03-29 Testing optical elements

Publications (1)

Publication Number Publication Date
GB1532485A true GB1532485A (en) 1978-11-15

Family

ID=10041729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1446776A Expired GB1532485A (en) 1977-03-29 1977-03-29 Testing optical elements

Country Status (1)

Country Link
GB (1) GB1532485A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3814697A1 (en) * 1988-04-30 1989-11-09 Wernicke & Co Gmbh Method and device for tracing the circumference of a template, of a spectacle (ophthalmic) lens or of the base of the groove of a spectacle frame opening for the purpose of obtaining coordinate values in the plane of the template, of the spectacle lens or of the spectacle frame opening
FR2938640A1 (en) * 2008-11-17 2010-05-21 Suez Environnement Indirect residual thickness evaluation device for e.g. vertical tube of industrial boiler for fossil energies and biomass, has measuring unit measuring flow via slot, where value of flow permits evaluation of external thickness loss of tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3814697A1 (en) * 1988-04-30 1989-11-09 Wernicke & Co Gmbh Method and device for tracing the circumference of a template, of a spectacle (ophthalmic) lens or of the base of the groove of a spectacle frame opening for the purpose of obtaining coordinate values in the plane of the template, of the spectacle lens or of the spectacle frame opening
FR2938640A1 (en) * 2008-11-17 2010-05-21 Suez Environnement Indirect residual thickness evaluation device for e.g. vertical tube of industrial boiler for fossil energies and biomass, has measuring unit measuring flow via slot, where value of flow permits evaluation of external thickness loss of tube

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee