FR1210162A - Fabrication de verres de lunettes, ou de lentilles, à foyers multiples - Google Patents

Fabrication de verres de lunettes, ou de lentilles, à foyers multiples

Info

Publication number
FR1210162A
FR1210162A FR1210162DA FR1210162A FR 1210162 A FR1210162 A FR 1210162A FR 1210162D A FR1210162D A FR 1210162DA FR 1210162 A FR1210162 A FR 1210162A
Authority
FR
France
Prior art keywords
lenses
manufacture
focal points
multiple focal
spectacle
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.)
PPG Industries Inc
Original Assignee
Pittsburgh Plate Glass Co
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 Pittsburgh Plate Glass Co filed Critical Pittsburgh Plate Glass Co
Application granted granted Critical
Publication of FR1210162A publication Critical patent/FR1210162A/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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/20—Uniting glass pieces by fusing without substantial reshaping
    • C03B23/22—Uniting glass lenses, e.g. forming bifocal lenses

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR1210162D 1957-10-07 1958-09-04 Fabrication de verres de lunettes, ou de lentilles, à foyers multiples Expired FR1210162A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1210162XA 1957-10-07 1957-10-07

Publications (1)

Publication Number Publication Date
FR1210162A true FR1210162A (fr) 1960-03-07

Family

ID=22393936

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1210162D Expired FR1210162A (fr) 1957-10-07 1958-09-04 Fabrication de verres de lunettes, ou de lentilles, à foyers multiples

Country Status (1)

Country Link
FR (1) FR1210162A (fr)

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