FR535076A - Perfectionnements aux lentilles - Google Patents

Perfectionnements aux lentilles

Info

Publication number
FR535076A
FR535076A FR535076DA FR535076A FR 535076 A FR535076 A FR 535076A FR 535076D A FR535076D A FR 535076DA FR 535076 A FR535076 A FR 535076A
Authority
FR
France
Prior art keywords
lentil
enhancements
lentil enhancements
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
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.)
American Optical Corp
Original Assignee
American Optical Corp
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 American Optical Corp filed Critical American Optical Corp
Application granted granted Critical
Publication of FR535076A publication Critical patent/FR535076A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR535076D 1921-05-04 1921-05-04 Perfectionnements aux lentilles Expired FR535076A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR535076T 1921-05-04

Publications (1)

Publication Number Publication Date
FR535076A true FR535076A (fr) 1922-04-08

Family

ID=8925920

Family Applications (1)

Application Number Title Priority Date Filing Date
FR535076D Expired FR535076A (fr) 1921-05-04 1921-05-04 Perfectionnements aux lentilles

Country Status (1)

Country Link
FR (1) FR535076A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3343891A1 (de) * 1983-12-05 1985-06-13 Optische Werke G. Rodenstock, 8000 München Mehrstaerkenglas mit hohem positiven brechwert

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3343891A1 (de) * 1983-12-05 1985-06-13 Optische Werke G. Rodenstock, 8000 München Mehrstaerkenglas mit hohem positiven brechwert

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