FR57785E - Improvements in devices for measuring the power of lenses and optical systems - Google Patents

Improvements in devices for measuring the power of lenses and optical systems

Info

Publication number
FR57785E
FR57785E FR57785DA FR57785E FR 57785 E FR57785 E FR 57785E FR 57785D A FR57785D A FR 57785DA FR 57785 E FR57785 E FR 57785E
Authority
FR
France
Prior art keywords
lenses
measuring
devices
power
optical systems
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
Other languages
French (fr)
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.)
Desgranges et Huot SA
Original Assignee
Desgranges et Huot 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 Desgranges et Huot SA filed Critical Desgranges et Huot SA
Application granted granted Critical
Publication of FR57785E publication Critical patent/FR57785E/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)
FR57785D 1947-09-17 1947-10-23 Improvements in devices for measuring the power of lenses and optical systems Expired FR57785E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1005749T 1947-09-17

Publications (1)

Publication Number Publication Date
FR57785E true FR57785E (en) 1953-09-09

Family

ID=9565093

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1005749D Expired FR1005749A (en) 1947-09-17 1947-09-17 Improvements in devices for measuring the power of lenses and optical systems
FR57785D Expired FR57785E (en) 1947-09-17 1947-10-23 Improvements in devices for measuring the power of lenses and optical systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR1005749D Expired FR1005749A (en) 1947-09-17 1947-09-17 Improvements in devices for measuring the power of lenses and optical systems

Country Status (1)

Country Link
FR (2) FR1005749A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5369058A (en) * 1976-11-30 1978-06-20 Hoya Lens Co Ltd Lens meter
US4410267A (en) * 1980-02-26 1983-10-18 Asahi Kogaku Kogyo Kabushiki Kaisha Hand-held lens meter

Also Published As

Publication number Publication date
FR1005749A (en) 1952-04-15

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