GB1527478A - Projection type focometers - Google Patents

Projection type focometers

Info

Publication number
GB1527478A
GB1527478A GB2299677A GB2299677A GB1527478A GB 1527478 A GB1527478 A GB 1527478A GB 2299677 A GB2299677 A GB 2299677A GB 2299677 A GB2299677 A GB 2299677A GB 1527478 A GB1527478 A GB 1527478A
Authority
GB
United Kingdom
Prior art keywords
screen
lens
lenses
branch
image
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
GB2299677A
Other languages
English (en)
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.)
EssilorLuxottica SA
Original Assignee
Essilor International Compagnie Generale dOptique 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 Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
Publication of GB1527478A publication Critical patent/GB1527478A/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
    • G01M11/0228—Testing optical properties by measuring refractive power

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)
GB2299677A 1976-06-28 1977-05-31 Projection type focometers Expired GB1527478A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7619559A FR2356925A1 (fr) 1976-06-28 1976-06-28 Frontofocometre a projection pour mesurer notamment la puissance focale d'une lentille a tester

Publications (1)

Publication Number Publication Date
GB1527478A true GB1527478A (en) 1978-10-04

Family

ID=9174915

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2299677A Expired GB1527478A (en) 1976-06-28 1977-05-31 Projection type focometers

Country Status (5)

Country Link
JP (1) JPS6052373B2 (it)
DE (1) DE2649159C3 (it)
FR (1) FR2356925A1 (it)
GB (1) GB1527478A (it)
IT (1) IT1083513B (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8721076B2 (en) 2007-11-30 2014-05-13 Essilor International (Compagnie Generale D'optique) Process for controlling a lens manufacturing process

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS582880Y2 (ja) * 1978-01-16 1983-01-18 株式会社 宮城建窓 網戸用目隠し
JPS5687836A (en) * 1979-12-19 1981-07-16 Tokyo Optical Co Ltd Projection type lens meter
US5424839A (en) * 1993-03-01 1995-06-13 Hughes Training, Inc. Method and apparatus for aligning visual images with visual display devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8721076B2 (en) 2007-11-30 2014-05-13 Essilor International (Compagnie Generale D'optique) Process for controlling a lens manufacturing process

Also Published As

Publication number Publication date
DE2649159B2 (de) 1978-08-10
JPS6052373B2 (ja) 1985-11-19
FR2356925A1 (fr) 1978-01-27
IT1083513B (it) 1985-05-21
FR2356925B1 (it) 1979-04-06
JPS533256A (en) 1978-01-12
DE2649159C3 (de) 1979-04-12
DE2649159A1 (de) 1977-12-29

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Legal Events

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

Effective date: 19920531