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GB644711A - Devices for measuring the focal length of lenses - Google Patents

Devices for measuring the focal length of lenses

Info

Publication number
GB644711A
GB644711A GB980548A GB980548A GB644711A GB 644711 A GB644711 A GB 644711A GB 980548 A GB980548 A GB 980548A GB 980548 A GB980548 A GB 980548A GB 644711 A GB644711 A GB 644711A
Authority
GB
United Kingdom
Prior art keywords
lenses
measuring
devices
focal length
focal
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
GB980548A
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.)
Combined Optical Industries Ltd
Original Assignee
Combined Optical Industries 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 Combined Optical Industries Ltd filed Critical Combined Optical Industries Ltd
Priority to GB980548A priority Critical patent/GB644711A/en
Publication of GB644711A publication Critical patent/GB644711A/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)
GB980548A 1948-04-07 1948-04-07 Devices for measuring the focal length of lenses Expired GB644711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB980548A GB644711A (en) 1948-04-07 1948-04-07 Devices for measuring the focal length of lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB980548A GB644711A (en) 1948-04-07 1948-04-07 Devices for measuring the focal length of lenses

Publications (1)

Publication Number Publication Date
GB644711A true GB644711A (en) 1950-10-18

Family

ID=9879112

Family Applications (1)

Application Number Title Priority Date Filing Date
GB980548A Expired GB644711A (en) 1948-04-07 1948-04-07 Devices for measuring the focal length of lenses

Country Status (1)

Country Link
GB (1) GB644711A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2897722A (en) * 1953-11-27 1959-08-04 American Optical Corp Means and method of testing lenses
DE1133573B (en) * 1959-04-17 1962-07-19 Dr Ernst Glock Arrangement for the quality check of photographic lenses
US3323417A (en) * 1962-04-10 1967-06-06 Polaroid Corp Testing apparatus for optical lenses
CN110320009A (en) * 2019-06-25 2019-10-11 歌尔股份有限公司 Optical property detection method and detection device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2897722A (en) * 1953-11-27 1959-08-04 American Optical Corp Means and method of testing lenses
DE1133573B (en) * 1959-04-17 1962-07-19 Dr Ernst Glock Arrangement for the quality check of photographic lenses
US3323417A (en) * 1962-04-10 1967-06-06 Polaroid Corp Testing apparatus for optical lenses
CN110320009A (en) * 2019-06-25 2019-10-11 歌尔股份有限公司 Optical property detection method and detection device

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