DE1008456B - Practically fluorine-free optical borate glasses - Google Patents

Practically fluorine-free optical borate glasses

Info

Publication number
DE1008456B
DE1008456B DEL17277A DEL0017277A DE1008456B DE 1008456 B DE1008456 B DE 1008456B DE L17277 A DEL17277 A DE L17277A DE L0017277 A DEL0017277 A DE L0017277A DE 1008456 B DE1008456 B DE 1008456B
Authority
DE
Germany
Prior art keywords
percent
weight
practically
fluorine
oxide
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.)
Pending
Application number
DEL17277A
Other languages
German (de)
Inventor
Gustav Weissenberg
Dr Otto Ungemach
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.)
Schott AG
Original Assignee
Jenaer Glaswerk Schott and 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
Application filed by Jenaer Glaswerk Schott and Gen filed Critical Jenaer Glaswerk Schott and Gen
Priority to DEL17277A priority Critical patent/DE1008456B/en
Publication of DE1008456B publication Critical patent/DE1008456B/en
Pending legal-status Critical Current

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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/062—Glass compositions containing silica with less than 40% silica by weight
    • C03C3/07—Glass compositions containing silica with less than 40% silica by weight containing lead
    • C03C3/072—Glass compositions containing silica with less than 40% silica by weight containing lead containing boron
    • 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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/062—Glass compositions containing silica with less than 40% silica by weight
    • C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron
    • C03C3/068—Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths
    • 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
    • C03C3/00—Glass compositions
    • C03C3/12—Silica-free oxide glass compositions
    • C03C3/14—Silica-free oxide glass compositions containing boron
    • C03C3/15—Silica-free oxide glass compositions containing boron containing rare earths
    • 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
    • C03C3/00—Glass compositions
    • C03C3/12—Silica-free oxide glass compositions
    • C03C3/14—Silica-free oxide glass compositions containing boron
    • C03C3/15—Silica-free oxide glass compositions containing boron containing rare earths
    • C03C3/155—Silica-free oxide glass compositions containing boron containing rare earths containing zirconium, titanium, tantalum or niobium
    • 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
    • C03C3/00—Glass compositions
    • C03C3/12—Silica-free oxide glass compositions
    • C03C3/253—Silica-free oxide glass compositions containing germanium

Description

DEUTSCHESGERMAN

Die Erfindung betrifft praktisch fluorfreie optische Boratgläser nach Patent 949686, die Lanthanoxyd als wesentlichen Bestandteil enthalten.The invention relates to practically fluorine-free optical borate glasses according to patent 949686, the lanthanum oxide as contain essential component.

In Erweiterung der Erfindung nach dem Hauptpatent wurde festgestellt, daß besonders wertvolle Gläser mit den Brechungsindizes no > 1,75 und no > 2,000-0,005 ν erschmolzen werden können, wenn das Glas mindestens Praktisch fluorfreie optische BoratgläserAs an extension of the invention according to the main patent, it was found that particularly valuable glasses with the refractive indices no > 1.75 and no > 2.000-0.005 ν can be melted if the glass is at least practically fluorine-free optical borate glasses

Zusatz zum Patent 949 686Addendum to patent 949 686

75 Gewichtsprozent B2O3,75 percent by weight B 2 O 3 ,

La2O3 La 2 O 3

und ZrO, enthält undand ZrO, contains and

mindestens ein Oxyd von Zink, Cadmium, Blei, Germanium und Silicium Verwendung findet, wobei das Molverhältnis von La2O3 zu B2O3, wie im Hauptpatent gefordert, zwischen 0,1 und 0,5 liegt.at least one oxide of zinc, cadmium, lead, germanium and silicon is used, the molar ratio of La 2 O 3 to B 2 O 3 , as required in the main patent, being between 0.1 and 0.5.

Gläser, welche aus mindestens 75 Gewichtsprozent B2O3, La2O3 und ZrO2 bestehen, sind aus der schweizerischen Patentschrift 206 664 bekannt. Diese Gläser unterscheiden sich von denen der Erfindung dadurch, daß bei ihnen nicht das geforderte Molverhältnis zwischen Lanthanoxyd und Borsäure eingehalten ist. Diese Gläser haben deshalb nicht die gute optische Lage wie die Gläser nach der Erfindung, insbesondere ist bei ihnen die Dispersion in unerwünschtem Maße größer. Außerdem haben die vorbekannten Gläser einen Gehalt an Titanoxyd an Stelle des geforderten Gehaltes von Siliciumoxyd nach der vorliegenden Erfindung. Abgesehen davon, daß die bekannten Gläser, durch das Titanoxyd bedingt, auf jeden Fall eine Färbung aufweisen, bringt das Titanoxyd auch eine unerwünschte Erhöhung der Dispersion mit sich.Glasses which consist of at least 75 percent by weight of B 2 O 3 , La 2 O 3 and ZrO 2 are known from Swiss Patent 206,664. These glasses differ from those of the invention in that they do not comply with the required molar ratio between lanthanum oxide and boric acid. These glasses therefore do not have the good optical position as the glasses according to the invention; in particular, the dispersion in them is greater to an undesirable extent. In addition, the previously known glasses have a content of titanium oxide instead of the required content of silicon oxide according to the present invention. Apart from the fact that the known glasses, due to the titanium oxide, always have a color, the titanium oxide also brings with it an undesirable increase in the dispersion.

Außer den hier genannten Metalloxyden können Erdalkalioxyde, Aluminiumoxyd, Indiumoxyd und Wolfram-Anmelder: In addition to the metal oxides mentioned here, alkaline earth oxides, aluminum oxide, indium oxide and tungsten can be applied for:

Jenaer Glaswerk Schott & Gen.,
Mainz, Hattenbergstr. 3Jenaer Glaswerk Schott & Gen.,
Mainz, Hattenbergstr. 3

Gustav Weissenberg und Dx. Otto Ungemach,Gustav Weissenberg and Dx. Otto hardship,

Marburg/Lahn,
sind als 'Erfinder genannt wordenMarburg / Lahn,
have been named as' inventors

säure bis zu 6 Gewichtsprozent in den Gläsern enthalten sein. Die Verwendung von Alkalioxyden, wie Li2O und Na2O, ist bis zu 5 Gewichtsprozent vorteilhaft. Neben den genannten Oxyden können entfärbende Substanzen und Läuterungsmittel in bekannter Weise Verwendung finden.acid up to 6 percent by weight in the glasses. The use of alkali oxides such as Li 2 O and Na 2 O is advantageous up to 5 percent by weight. In addition to the oxides mentioned, decolorizing substances and refining agents can be used in a known manner.

In den nachfolgenden Tabellen ist eine Anzahl von Schmelzen aufgeführt, die jedoch nur als Beispiele gelten. Die Gläser sind sämtlich stabil und höchstens schwach gefärbt.A number of melts are listed in the tables below, but these are only examples. The glasses are all stable and at most slightly colored.

Tabelle 1
in GewichtsprozentTable 1
in percent by weight

Schmelze
Nr.melt
No. CaOCaO B2O3 B 2 O 3 La2O3 La 2 O 3 ZrO2 ZrO 2 ZnOZnO CdOCdO PbOPbO ηη
DD. νν 634634 55 3030th . 45. 45 1515th 55 1,78781.7878 47,247.2 633633 55 3030th 4545 1010 1010 —- —- 1,77651.7765 48,248.2 635635 '5'5 3030th 4545 55 1515th —- —- 1,76301.7630 48,748.7 654654 55 3030th 4545 1515th —- 55 —- 1,79451.7945 47,147.1 653653 55 3030th 4545 1010 —- 1010 —- 1,78711.7871 47,547.5 655655 55 3030th 4545 55 1515th 1,77731.7773 48,148.1 666666 —- 3030th 4545 1010 —- 1515th —- 1,79661.7966 46,846.8 667667 3030th 4545 1111 1414th 1,80041.8004 46,746.7 668668 3030th 4545 1212th 1313th 1,80011.8001 46,746.7 669669 3030th 4545 1313th 1212th 1,79981.7998 46,346.3 670670 3030th 4545 1414th 1111 —- 1,80351.8035 46,546.5 671671 —- 3030th 4545 1515th —- 1010 —- 1,80091.8009 46,246.2 637637 55 3030th 4545 1515th —- —- 55 1,79451.7945 45,545.5 636636 55 3030th 4545 1010 1010 1,79241.7924 43,943.9 638638 55 3030th 4545 55 1515th 1,78791.7879 42,742.7 644644 55 27,527.5 4545 12,512.5 —- —- 1010 1,80911.8091 42,642.6 646646 55 27,527.5 47,547.5 1010 1010 1,80631.8063 43,143.1 651651 2,52.5 3030th 4545 1515th —- —- 7,57.5 1,80351.8035 44,144.1

709 509/182709 509/182

Tabelle 1 (Fortsetzung) in GewichtsprozentTable 1 (continued) in percent by weight

Schmelze
Nr.melt
No. CaOCaO B2O3 B 2 O 3 La2O3 La 2 O 3 ZrO2 ZrO 2 ZnOZnO CdOCdO PbOPbO nD n D VV 652652 3030th 4545 1515th 1010 1,80921.8092 43,043.0 642642 55 3030th 4545 1515th 2,52.5 —- 2,52.5 1,79281.7928 46,346.3 643643 55 27,527.5 4545 1515th 2,52.5 —- 55 1,80761.8076 44,344.3 658658 —- 30.30th 4545 55 1515th —- 55 1,78041.7804 46,446.4 656656 —- 3030th 4545 1010 1010 —- 55 1,79191.7919 45,845.8 657657 —- 3030th 4545 1515th 55 —- 55 1,80251.8025 45,145.1 661661 —- 3030th 4545 55 1515th 55 1,79161.7916 45,345.3 659659 —- 3030th 4545 1010 —- 1010 55 1,80151.8015 45,145.1 660660 —- 3030th 4545 1515th —- 55 55 1,80391.8039 44,844.8 665665 —- 3030th 4545 1010 —- 12,512.5 2,52.5 1,80061.8006 45,645.6 681681 —.-. 3030th 4545 1010 1414th 11 1,79561.7956 46,546.5 674674 —- 3030th 4545 1010 2,52.5 12,512.5 —.-. 1,79291.7929 46,746.7 675675 —- 3030th 4545 1010 55 1010 —- 1,79081.7908 47,147.1 676676 —- 3030th 4545 1010 7,57.5 7,57.5 .—..—. 1,78961.7896 47,347.3 677677 —.-. 3030th 4545 1010 1010 55 . . 1,78791.7879 47,547.5 678678 .—·.— · 3030th 4545 1010 12,512.5 2,52.5 —- 1,78501.7850 47,747.7 662662 —- 3030th 4545 1010 55 55 55 1,79841.7984 45,345.3 664664 —- 3030th 4545 55 7,57.5 7,57.5 55 1,78801.7880 46,146.1

TabeUe 2 in GewichtsprozentTable 2 in percent by weight

Schmelze
Nr.melt
No. CaOCaO B2O3 B 2 O 3 La2O3 La 2 O 3 ZrO2 ZrO 2 GeO2 GeO 2 SiO2 SiO 2 ZnOZnO CdOCdO %% VV 647647 55 3030th 4545 1010 1010 1,76521.7652 48,248.2 648648 55 3030th 4545 12,512.5 7,57.5 —- —- —- 1,77351.7735 .—..—. 649649 55 3030th 4545 1515th 55 .—..—. 1,78041.7804 47,547.5 650650 55 3030th 4545 17,517.5 2,52.5 —- —- —- 1,79111.7911 47,047.0 639639 55 3030th 4545 1010 55 —- 55 —- 1,77131.7713 48,448.4 672672 —- 3030th 4545 1010 55 —- —- 1010 1,78601.7860 47,047.0 673673 —- 3030th 4545 12,512.5 2,52.5 —- —- 1010 1,79201.7920 46,746.7 641641 55 3030th 4545 1010 —- 55 55 —■- ■ 1,75601.7560 49,249.2

Tabelle 3 in GewichtsprozentTable 3 in percent by weight

Schmelze Nr.Melt no. B2O3 B 2 O 3 La2O3 La 2 O 3 ZrO2 ZrO 2 CdOCdO WO3 WHERE 3 %% VV 679
680679
680 30
3030th
30th 45
4545
45 10
1010
10 10
12,510
12.5 5
2,55
2.5 1,7964
1,79611.7964
1.7961 45,6
46,145.6
46.1

Tabelle 4 in GewichtsprozentTable 4 in percent by weight

Schmelze Nr.Melt no. B2O3 B 2 O 3 La2O3 La 2 O 3 ZrO2 ZrO 2 CdOCdO Li2OLi 2 O ηη
DD. VV 690690 3030th 4545 1010 1414th 11 1,79221.7922 49,349.3

Claims (4)

Patentansprüche:Patent claims: 1. Praktisch fluorfreie optische Boratgläser nach Patent 949 686, bei denen nD > 1,75 und nD > 2,000 - 0,0050 υ ist, dadurch gekennzeichnet, daß sie zu mindestens 75 Gewichtsprozent aus B2O3, La2O3 und ZrO2 sowie mmdestens einem Oxyd von Zink, Cadmium, Blei, Germanium und Silicium bestehen, wobei das Molverhältnis von La2O3 zu B2O3 zwischen 0,1 und 0,5 liegt.1. Practically fluorine-free optical borate glasses according to Patent 949 686, in which n D > 1.75 and n D > 2.000-0.0050 υ , characterized in that they consist of at least 75 percent by weight of B 2 O 3 , La 2 O 3 and ZrO 2 and at least one oxide of zinc, cadmium, lead, germanium and silicon, the molar ratio of La 2 O 3 to B 2 O 3 being between 0.1 and 0.5. 2. Optisches Glas nach Anspruch 1, dadurch gekennzeichnet, daß es zusätzlich bis zu 10 Gewichts-2. Optical glass according to claim 1, characterized in that it also contains up to 10 weight prozent aus mindestens einem Erdalkalioxyd besteht. percent consists of at least one alkaline earth oxide. 3. Optisches Glas nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß es bis zu 5 Gewichtsprozent Alkalioxyd enthält.3. Optical glass according to claim 1 or 2, characterized in that it is up to 5 percent by weight Contains alkali oxide. 4. Optisches Glas nach mindestens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß es bis zu 6 Gewichtsprozent Wolframoxyd enthält.4. Optical glass according to at least one of claims 1 to 3, characterized in that it is up Contains 6 percent by weight of tungsten oxide. In Betracht gezogene Druckschriften:
Schweizerische Patentschrift Nr. 206 664.Considered publications:
Swiss patent specification No. 206 664. 1 709 5091/182 5.571 709 5091/182 5.57
DEL17277A 1951-02-26 1953-11-28 Practically fluorine-free optical borate glasses Pending DE1008456B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL17277A DE1008456B (en) 1951-02-26 1953-11-28 Practically fluorine-free optical borate glasses

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1066068X 1951-02-26
DEL17277A DE1008456B (en) 1951-02-26 1953-11-28 Practically fluorine-free optical borate glasses

Publications (1)

Publication Number Publication Date
DE1008456B true DE1008456B (en) 1957-05-16

Family

ID=25985048

Family Applications (1)

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DEL17277A Pending DE1008456B (en) 1951-02-26 1953-11-28 Practically fluorine-free optical borate glasses

Country Status (1)

Country Link
DE (1) DE1008456B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH206664A (en) * 1935-09-03 1939-08-31 Kodak Sa Optical glass and method of making the same.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH206664A (en) * 1935-09-03 1939-08-31 Kodak Sa Optical glass and method of making the same.

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