FR576779A - Perfectionnements aux lentilles - Google Patents

Perfectionnements aux lentilles

Info

Publication number
FR576779A
FR576779A FR576779DA FR576779A FR 576779 A FR576779 A FR 576779A FR 576779D A FR576779D A FR 576779DA FR 576779 A FR576779 A FR 576779A
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 FR576779A publication Critical patent/FR576779A/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
    • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
    • G02C7/104—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having spectral characteristics for purposes other than sun-protection

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR576779D 1924-02-05 1924-02-05 Perfectionnements aux lentilles Expired FR576779A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR576779T 1924-02-05

Publications (1)

Publication Number Publication Date
FR576779A true FR576779A (fr) 1924-08-26

Family

ID=8954287

Family Applications (1)

Application Number Title Priority Date Filing Date
FR576779D Expired FR576779A (fr) 1924-02-05 1924-02-05 Perfectionnements aux lentilles

Country Status (1)

Country Link
FR (1) FR576779A (fr)

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