IT985902B - Vetro fototropico come materiale per zona di vicinanza da fondere insieme con vetri per zona di lontananza in lenti multifocali - Google Patents

Vetro fototropico come materiale per zona di vicinanza da fondere insieme con vetri per zona di lontananza in lenti multifocali

Info

Publication number
IT985902B
IT985902B IT6836973A IT6836973A IT985902B IT 985902 B IT985902 B IT 985902B IT 6836973 A IT6836973 A IT 6836973A IT 6836973 A IT6836973 A IT 6836973A IT 985902 B IT985902 B IT 985902B
Authority
IT
Italy
Prior art keywords
glass
zone
fuse together
multifocal lenses
phototropic
Prior art date
Application number
IT6836973A
Other languages
English (en)
Original Assignee
Ienaer Glaswerk Schott U Gen
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
Priority claimed from DE19722223629 external-priority patent/DE2223629C3/de
Application filed by Ienaer Glaswerk Schott U Gen filed Critical Ienaer Glaswerk Schott U Gen
Application granted granted Critical
Publication of IT985902B publication Critical patent/IT985902B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C4/00—Compositions for glass with special properties
    • C03C4/04—Compositions for glass with special properties for photosensitive glass
    • C03C4/06—Compositions for glass with special properties for photosensitive glass for phototropic or photochromic glass
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/23—Photochromic filters
    • 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

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)
  • Eyeglasses (AREA)
IT6836973A 1972-05-15 1973-05-14 Vetro fototropico come materiale per zona di vicinanza da fondere insieme con vetri per zona di lontananza in lenti multifocali IT985902B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722223629 DE2223629C3 (de) 1972-05-15 Phototropes Glas, geeignet als Nahteilmaterial zur Verschmelzung mit phototropen Fernteilgläsern auf der Basis eines optischen Glases des Systems SiO tief 2 -B tief 2 0 tief 3 -Al tief 2 0 tief 3 -La tief 2 0 tief 3 -PbO-(ZnO)

Publications (1)

Publication Number Publication Date
IT985902B true IT985902B (it) 1974-12-30

Family

ID=5844917

Family Applications (1)

Application Number Title Priority Date Filing Date
IT6836973A IT985902B (it) 1972-05-15 1973-05-14 Vetro fototropico come materiale per zona di vicinanza da fondere insieme con vetri per zona di lontananza in lenti multifocali

Country Status (6)

Country Link
JP (1) JPS549605B2 (it)
AT (1) AT338451B (it)
CA (1) CA1023187A (it)
FR (1) FR2184805B1 (it)
GB (1) GB1419644A (it)
IT (1) IT985902B (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2346296A1 (fr) * 1976-03-31 1977-10-28 Corning Glass Works Procede pour la fabrication de lentilles ophtalmiques photochromiques multifocales
DE3117000C2 (de) * 1981-04-29 1986-05-28 Schott Glaswerke, 6500 Mainz Phototropes Glas mit einem Brechungsindex ≥ 1,59, einer Abbezahl ≥ 40 und einer Dichte ≦ 3,2 g/cm↑3↑
DE3917614C1 (it) * 1989-05-31 1990-06-07 Schott Glaswerke, 6500 Mainz, De
JP2711618B2 (ja) * 1992-06-30 1998-02-10 ティーディーケイ株式会社 誘電体組成物、多層配線基板および積層セラミックコンデンサ
US8361917B2 (en) * 2010-08-05 2013-01-29 Schott Corporation Rare earth aluminoborosilicate glass composition
US20230286855A1 (en) * 2019-11-14 2023-09-14 Nippon Electric Glass Co., Ltd. Glass article

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1246889A (en) * 1968-05-17 1971-09-22 Nippon Sheet Glass Co Ltd Phototropic glass
FR2104862A1 (en) * 1970-08-19 1972-04-21 Corning Glass Works Heat-darkenable photochromic glass - with lanthanum borate glass-phase contg silver halides and copper oxide

Also Published As

Publication number Publication date
ATA191173A (de) 1976-12-15
JPS549605B2 (it) 1979-04-26
CA1023187A (en) 1977-12-27
FR2184805B1 (it) 1978-07-07
AT338451B (de) 1977-08-25
DE2223629A1 (de) 1973-12-06
JPS4926314A (it) 1974-03-08
GB1419644A (en) 1975-12-31
FR2184805A1 (it) 1973-12-28
DE2223629B2 (de) 1975-12-04

Similar Documents

Publication Publication Date Title
IT979860B (it) Perfezionamento nei contenitori di materiale plastico
IT962638B (it) Bottiglia di vetro schermata con materiale termoplastico
IT1044802B (it) Materiale trasparente antiappannante
BE754786A (fr) Procede pour la preparation de matieres a plusieurs composants,transparentes en particulier vitreuses
IT982403B (it) Perfezionamento negli specchi comprendenti quale materiale riflettente una pellicola in plastica metallizzata
IT973658B (it) Perfezionamento negli apparecchi per la produzione di recipienti di vetro muniti di rivestimento di materiale plastico
IT939892B (it) Materiale catarifrangente e pro cedimento per la sua fabbricazione
IT993013B (it) Composizione apprettante per fibre di vetro
IT986422B (it) Composizione per impedire l agglu tinamento di materiale in particel le particolarmente di natura igro scopica
IT977025B (it) Materiale in foglio retro riflet tente particolarmente per la produzione di segnali stradali
IT981223B (it) Fibre cave di materiale traspa rente riempite
IT985447B (it) Perfezionamento nelle guarnizioni di fibre di vetro
BR7309899D0 (pt) Aperfeicoamento em composicao de vidro resistente aos alcalis
IT985902B (it) Vetro fototropico come materiale per zona di vicinanza da fondere insieme con vetri per zona di lontananza in lenti multifocali
DK144968C (da) Fremgangsmaade til fremstilling af fototrope flerstyrkebrilleglas
BE807798A (nl) Zonwerend glas
IT991686B (it) Macchina per la fabbricazione di contenitori di vetro
IT981426B (it) Materiale polimerico
IT1008921B (it) Macchina granulatrice di materiale in nastro
IT1005167B (it) Metodo e macchina per la fabbrica zione di oggetti di vetro stampato in particolare sbozzati di lenti
IT979718B (it) Perfezionamento nelle piastre termo plastiche rinforzate con fibra di vetro e relativo procedimento di produzione
BE820794A (fr) Vitre isolante phototrope constituee par plusieurs glaces
IT965918B (it) Lampada a fibre di vetro
IT1000653B (it) Vetro fototropico al silicoborato per applicazioni oftalmiche e pro cedimento per la sua fabbricazione
CH528089A (it) Materiale catarifrangente, in particolare per segnaletica stradale