DE301962C - - Google Patents

Info

Publication number
DE301962C
DE301962C DENDAT301962D DE301962DA DE301962C DE 301962 C DE301962 C DE 301962C DE NDAT301962 D DENDAT301962 D DE NDAT301962D DE 301962D A DE301962D A DE 301962DA DE 301962 C DE301962 C DE 301962C
Authority
DE
Germany
Prior art keywords
double focus
distant
near part
glass
focus glass
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.)
Active
Application number
DENDAT301962D
Other languages
German (de)
English (en)
Publication of DE301962C publication Critical patent/DE301962C/de
Active 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)
  • Eyeglasses (AREA)
DENDAT301962D Active DE301962C (xx)

Publications (1)

Publication Number Publication Date
DE301962C true DE301962C (xx)

Family

ID=555793

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT301962D Active DE301962C (xx)

Country Status (1)

Country Link
DE (1) DE301962C (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1135679B (de) * 1956-04-13 1962-08-30 Bozena Marie Phillips Einstueckiges bifokales Brillenglas und Verfahren zu seiner Herstellung
US6199984B1 (en) 1999-03-17 2001-03-13 Johnson & Johnson Vision Care, Inc. Progressive addition lenses with varying power profiles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1135679B (de) * 1956-04-13 1962-08-30 Bozena Marie Phillips Einstueckiges bifokales Brillenglas und Verfahren zu seiner Herstellung
US6199984B1 (en) 1999-03-17 2001-03-13 Johnson & Johnson Vision Care, Inc. Progressive addition lenses with varying power profiles

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