DE1090398B - Optical crown glasses - Google Patents
Optical crown glassesInfo
- Publication number
- DE1090398B DE1090398B DEL31315A DEL0031315A DE1090398B DE 1090398 B DE1090398 B DE 1090398B DE L31315 A DEL31315 A DE L31315A DE L0031315 A DEL0031315 A DE L0031315A DE 1090398 B DE1090398 B DE 1090398B
- Authority
- DE
- Germany
- Prior art keywords
- percent
- weight
- oxide
- mixture
- glasses
- 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
Links
- 239000011521 glass Substances 0.000 title claims description 17
- 230000003287 optical effect Effects 0.000 title claims description 6
- 239000000203 mixture Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims description 10
- 239000011575 calcium Substances 0.000 claims description 10
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 8
- 239000011701 zinc Substances 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 239000005304 optical glass Substances 0.000 claims description 6
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- 229910052793 cadmium Inorganic materials 0.000 claims description 4
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Chemical compound [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 claims description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004327 boric acid Substances 0.000 claims description 3
- 150000004760 silicates Chemical class 0.000 claims description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 24
- 239000011787 zinc oxide Substances 0.000 description 12
- 239000000126 substance Substances 0.000 description 6
- 210000003298 dental enamel Anatomy 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 2
- 150000001642 boronic acid derivatives Chemical class 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- ILOKQJWLMPPMQU-UHFFFAOYSA-N calcium;oxido(oxo)borane Chemical compound [Ca+2].[O-]B=O.[O-]B=O ILOKQJWLMPPMQU-UHFFFAOYSA-N 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- DJHGAFSJWGLOIV-UHFFFAOYSA-N Arsenic acid Chemical compound O[As](O)(O)=O DJHGAFSJWGLOIV-UHFFFAOYSA-N 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 229940000488 arsenic acid Drugs 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000005287 barium borate glass Substances 0.000 description 1
- 229910052916 barium silicate Inorganic materials 0.000 description 1
- XBJJRSFLZVLCSE-UHFFFAOYSA-N barium(2+);diborate Chemical compound [Ba+2].[Ba+2].[Ba+2].[O-]B([O-])[O-].[O-]B([O-])[O-] XBJJRSFLZVLCSE-UHFFFAOYSA-N 0.000 description 1
- HMOQPOVBDRFNIU-UHFFFAOYSA-N barium(2+);dioxido(oxo)silane Chemical compound [Ba+2].[O-][Si]([O-])=O HMOQPOVBDRFNIU-UHFFFAOYSA-N 0.000 description 1
- 239000006121 base glass Substances 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 229910001610 cryolite Inorganic materials 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000075 oxide glass Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000005375 strontium borate glass Substances 0.000 description 1
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 1
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
- C03C3/12—Silica-free oxide glass compositions
- C03C3/14—Silica-free oxide glass compositions 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
- C03C3/066—Glass compositions containing silica with less than 40% silica by weight containing boron containing zinc
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Description
DEUTSCHESGERMAN
Gegenstand vorliegender Erfindung sind optische Gläser mit kleiner Dispersion und relativ hohem Brechungsindex.The present invention relates to optical glasses with small and relatively high dispersion Refractive index.
Derartige Gläser sind bis jetzt als Borsäure-Seltene Erdoxyd-Gläser mit mehr oder weniger hohem Kieselsäuregehalt oder als Bariumsilikatgläser bzw. Bariumborat- bzw. Strontiumboratgläser erschmolzen worden. Während die erste. Gruppe, die als Lanthankrone bekannt .ist, relativ stabil,, aber wegen des notwendigen hohen Lantharigehältes auch relativ teuer ist, sind die hoch bariumoxydhaltigen Gläser chemisch wenig resistent und bereiten in der Fertigung erhebliche Schwierigkeiten. Ferner sind Systeme aus Erdalkalioxyden und Borsäure bekanntgeworden, wobei zur Erreichung der geforderten hohen Brechungsindizes wieder ein relativ hoher Gehalt an Bariumoxyd notwendig -war.Such glasses have hitherto been known as boric acid-rare earth oxide glasses with a more or less high silica content or melted as barium silicate glasses or barium borate or strontium borate glasses. While the first. Group known as the lanthanum crown, relatively stable, but because of the necessity high Lanthari content is also relatively expensive, glasses with a high barium oxide content are chemically low resistant and cause considerable difficulties in production. In addition, there are systems made from alkaline earth oxides and boric acid have become known, with the aim of achieving the required high refractive indices Again a relatively high content of barium oxide was necessary.
Gegenstand vorliegender Erfindung sind Gläser mit etwa den gleichen optischen Lagen wie die vorgenannten, die jedoch mindestens nahezu frei von Lanthanoxyd bzw. Bariumoxyd sind. Durch die Vermeidung dieser beiden Substanzen sind die Gläser chemisch stabil und preiswerter und ergeben keine merklichen Schwierigkeiten bei der Herstellung von optischen Systemen.The present invention relates to glasses with approximately the same optical layers as the aforementioned, which, however, are at least almost free of lanthanum oxide or barium oxide. By avoiding of these two substances, the glasses are chemically stable and cheaper and do not produce any significant difficulties in manufacturing optical systems.
• Die erfindungsgemäß eh Gläser; besiehen-im'w:esent-·: liehen aus mindestens einem Oxyd von Calcium oder Magnesium, mindestens einem Oxyd von Zink oder Cadmium und Borsäure, wobei der Anteil der genannten Bestandteile zwischen folgenden Grenzen liegt: ■-■-""• The glasses according to the invention anyway; besiehen-im'w : esent- ·: borrowed from at least one oxide of calcium or magnesium, at least one oxide of zinc or cadmium and boric acid, the proportion of the components mentioned being between the following limits: ■ - ■ - ""
CaO und/oder MgO 12,5 bis 38 Gewichtsprozent ZnO und/oder CdO 10 bis 46 Gewichtsprozent B2O3 19 bis 55 GewichtsprozentCaO and / or MgO 12.5 to 38 percent by weight ZnO and / or CdO 10 to 46 percent by weight B 2 O 3 19 to 55 percent by weight
Es wurde weiter gefunden, daß Borate von Magnesium und/oder Calcium in Gegenwart von Oxyden und/oder Boraten des Zinks oder Cadmiums; eine gute Ausgangsbasis für Gemenge zum Erschmelzen der erfindungsgemäßen Gläser ergeben. Diesen Gemengen kann bis zu 30 Gewichtsprozent Kieselsäure zugesetzt werden, wobei die Kieselsäure neben den Oxyden von . Magnesium und/oder Calcium sowie Zink und/oder Cadmium oder aber in Form der Silikate der vorgenannten Elemente in das Gemenge eingebracht wird. Es hat sich als besonders zweckmäßig erwiesen, den Gemengen Zirkonoxyd bis zu 7,5 Gewichtsprozent beizugeben, wodurch die chemische Stabilität der* Gläser noch wesentlich erhöht wird. Zur Aufhellung und leichteren Schmelzbarkeit empfiehlt sich ein kleiner Anteil von Alkalioxyden, der in Form der Karbonate oder Nitrate dem Gemenge beigegeben wird, beispielsweise bis 3 Gewichtsprozent AlkaliOptische KrongläserIt has also been found that borates of magnesium and / or calcium in the presence of oxides and / or borates of zinc or cadmium; a good starting point for batches for melting the invention Glasses surrender. Up to 30 percent by weight of silica can be added to these mixtures be, with the silica in addition to the oxides of. Magnesium and / or calcium and zinc and / or Cadmium or else in the form of the silicates of the aforementioned elements is introduced into the mixture. It has proven particularly expedient to add up to 7.5 percent by weight to the mixtures of zirconium oxide to be added, whereby the chemical stability of the * glasses is significantly increased. For brightening and easier fusibility, a small proportion of alkali oxides is recommended, in the form of the Carbonates or nitrates are added to the mixture, for example up to 3 percent by weight AlkaliOptische Crown glasses
Anmelder:Applicant:
Ernst Leitz G. m. b, H.,
Wetzlar/Lahn, Laufdorfer WegErnst Leitz G. m. B, H.,
Wetzlar / Lahn, Laufdorfer Weg
Dipl.-Chem. Heinz Bröiner, Hermannstein,Dipl.-Chem. Heinz Bröiner, Hermannstein,
und Norbert Meinert, Wetzlar/Lahn,and Norbert Meinert, Wetzlar / Lahn,
sind als Erfinder genannt wordenhave been named as inventors
oxyde, wobei das Verhältnis Natrium zu Kalium 3:1 gewählt werden kann. Ein kleiner Gehalt von Arsen-"■'säure zur weiteren Entfärbung ist zweckmäßig.oxyde, the ratio of sodium to potassium being 3: 1 can be chosen. A small amount of arsenic acid for further decolorization it is advisable.
Zum Einregulieren einer ganz bestimmten .optischen Lage können bis zu 12 Gewichtsprozent des gesamten Gemengesatzes Strontiumoxyd und/oder Bariumoxyd und/oder Lanthanoxyd verwendet werden. Ein derart niedriger Gehalt an diesen beiden Rohstoffen ist chemisch nicht mehr wirksam und verteuert auch den Gemengesatz nicht wesentlich. Zur weiteren Stabilisierung hat sich ein Gehalt von Aluminiumoxyd bis zuFor adjusting a very specific .optical Up to 12 percent by weight of the total batch rate of strontium oxide and / or barium oxide can be used and / or lanthanum oxide can be used. Such a low content of these two raw materials is chemically no longer effective and also does not make the batch recipe significantly more expensive. For further stabilization has an alumina content up to
35. 10 Gewichtsprozent im Gemenge bewährt.35. 10 percent by weight in the mixture has proven its worth.
In Tabelle 1 sind Schmelzgemenge angeführt, bei denen das Grundglas aus Calciummetaborat und Zinkmetahorat besteht. Es hat sich gezeigt, daß eine weitere Zugabe von Zinkoxyd den Brechungsindex relativ stark beeinflußt, so daß man in der Lage ist, die gewünschten optischen Werte allein mit Zinkoxyd zu erreichen. In den Gemengen von Nr. 66 bis 69 ist statt Zinkoxyd Zirkonoxyd bis zu 17,5 Gewichtsprozent dem Gemenge zugegeben. Ein Vergleich mit den entsprechenden Gläsern, mit einem zusätzlichen Anteil an Zinkoxyd zeigt, daß "bei gleichem Brechungsindex die Dispersion verringert wird, wobei der Anteil an Zirkonoxyd in Gewichtsprozent wesentlich geringer ist als der von Zinkoxyd. Der Calciummetaboratgehalt dieser Schmelzen liegt zwischen 35. und 63 Gewichtsprozent, der Zinkboratgehalt zwischen 32 und 55 Gewichtsprozent. Der Anteil an Zinkoxyd kann bis zu 25 Gewichtsprozent, der Anteil an Zirkonoxyd bis zu 17,5 Gewichtsprozent betragen.Table 1 lists melt batches in which the base glass is composed of calcium metaborate and zinc metahorate consists. It has been shown that a further addition of zinc oxide reduces the refractive index relative strongly influenced, so that one is able to achieve the desired optical values with zinc oxide alone reach. In the batches from No. 66 to 69 there is zirconium oxide instead of zinc oxide up to 17.5 percent by weight added to the mixture. A comparison with the corresponding glasses, with an additional one The proportion of zinc oxide shows that "with the same refractive index, the dispersion is reduced, the proportion of zirconium oxide in percent by weight is much lower than that of zinc oxide. The calcium metaborate content of these melts is between 35 and 63 percent by weight, the zinc borate content between 32 and 55 percent by weight. The proportion of zinc oxide can be up to 25 percent by weight, the proportion of zirconium oxide up to to be 17.5 percent by weight.
009 610/202009 610/202
1,648
1,657
1,661
1,662
1,671
1,643
1,650
1,660
1,666
1,644
1,651
1,665
1,671
1,670
1.6851.641
1.648
1.657
1.661
1.662
1.671
1.643
1,650
1.660
1.666
1.644
1.651
1.665
1.671
1.670
1,685
59,5
54,3
52,0
58,0
55,7
55,5
52,4
47,1
44,9
45,4
42,4
37,2
35,2
40,8
38,662.5
59.5
54.3
52.0
58.0
55.7
55.5
52.4
47.1
44.9
45.4
42.4
37.2
35.2
40.8
38.6
35,7
32,6
31,2
34,9
33,4
44,5
42,0
37,7
35,9
54,6
50,8
44,8
42,2
49,1
46,337.5 ■ ■
35.7
32.6
31.2
34.9
33.4
44.5
42.0
37.7
35.9
54.6
50.8
44.8
42.2
49.1
46.3
13,1
16,8
5,6
15,2
19,2
6,8
18,0
22,64.8
13.1
16.8
5.6
15.2
19.2
6.8
18.0
22.6
10,9
10,1
15,17.1
10.9
10.1
15.1
56,4
54,5
53,8
54,7
53,2
56,7
55,9
53,8
52,6
56,2
55,0
52,3
51,1
52,5
50,857.4
56.4
54.5
53.8
54.7
53.2
56.7
55.9
53.8
52.6
56.2
55.0
52.3
51.1
52.5
50.8
Br/IV/63
Br/IV/64 ............
Br/IV/65
Br/IV/68 ............
Br/IV/69
Br/IV/55
Br/IV/60
Br/IV/61
Br/IV/62
Br/IV/54
Br/IV/57
Br/IV/58
Br/IV/59
Br/IV/66
Br/IV/67 Br / IV / 56
Br / IV / 63
Br / IV / 64 ............
Br / IV / 65
Br / IV / 68 ............
Br / IV / 69
Br / IV / 55
Br / IV / 60
Br / IV / 61
Br / IV / 62
Br / IV / 54
Br / IV / 57
Br / IV / 58
Br / IV / 59
Br / IV / 66
Br / IV / 67
In der Tabelle 2 a ist in den Gemengen Kieselsäure 80 Gewichtsprozent, während der ZinkoxydanteilIn Table 2 a, silicic acid is 80 percent by weight in the batches, while the zinc oxide content
zugesetzt. Der Brechungsindex der daraus erschmölze- 25 in diesen Gläsern bis zu 25 Gewichtsprozent beiadded. The refractive index of the resulting 25 in these glasses is up to 25 percent by weight
nen Gläser sinkt zugunsten der Dispersion. Der CaI- einem Kieselsäuregehalt bis zu 20 Gewichtsprozentnen glasses decrease in favor of the dispersion. The CaI - a silica content up to 20 percent by weight
ciummetaboratanteil dieser Schmelzen steigt bis zu beträgt.The proportion of ciummetaborate in these melts increases up to.
70,5
64,1
71,578.2
70.5
64.1
71.5
16,9
20,6
11,512.5
16.9
20.6
11.5
12,6
15,3
17,09.3
12.6
15.3
17.0
1,644
1,644
1,6281.643
1.644
1.644
1.628
56,5
56,2
57,258.0
56.5
56.2
57.2
In der Tabelle 2 b sind Gläser gezeigt, denen zur weiteren Stabilisierung Zirkonoxyd bis zu 10,5 Gewichtsprozent zugesetzt ist.Table 2b shows glasses with up to 10.5 percent by weight of zirconium oxide for further stabilization is added.
1,652
1,660
1,670
1,634
1,661
1,666
1,6691.646
1.652
1.660
1.670
1.634
1.661
1.666
1.669
Br/IV/90
Br/IV/92
Br/IV/91
Br/IV/102
Br/IV/101
Br/IV/93
Br/IV/96 Br / IV / 89
Br / IV / 90
Br / IV / 92
Br / IV / 91
Br / IV / 102
Br / IV / 101
Br / IV / 93
Br / IV / 96
75,3
72,5
70,0
70,2
64,5
69,0
69,476.7
75.3
72.5
70.0
70.2
64.5
69.0
69.4
12,0
11,7
11,3
11,4
10,5
11,1
11,212.3
12.0
11.7
11.3
11.4
10.5
11.1
11.2
9,0
8,6
8,3
16,7
15,4
8,2
8,29.1
9.0
8.6
8.3
16.7
15.4
8.2
8.2
3,7
7,2
10,4
1,7
9,6
10,0
10,31.9
3.7
7.2
10.4
1.7
9.6
10.0
10.3
0,91.7
0.9
56,2
54,6
53,4
56,1
52,2
53,0
53,257.1
56.2
54.6
53.4
56.1
52.2
53.0
53.2
Bei den Gläsern der Tabelle 2 c wurde zur Erreichung einer besonders kleinen Dispersion bei Erhöhung des Brechungsindex bis zu 12 Gewichtsprozent Lanthanoxyd dem Gemenge zugegeben.In the case of the glasses in Table 2 c, a particularly small dispersion was used when increasing of the refractive index up to 12 percent by weight of lanthanum oxide is added to the mixture.
1,6671.652
1.667
62,666.3
62.6
15,116.0
15.1
11,211.8
11.2
11,15.9
11.1
. 55,2 "56.1
. 55.2 "
Schließlich zeigt die Tabelle 2d Gläser, bei denen dem Gemenge noch Calciumoxyd zugegeben wurde.Finally, Table 2d shows glasses for which Calcium oxide was added to the mixture.
Das Zink und Calcium kann auch als entsprechendes Silikat eingesetzt werden.The zinc and calcium can also be used as the corresponding silicate.
1,6411.644
1.641
56,156.8
56.1
Br/IV/99 Br / IV / 98
Br / IV / 99
42,259.5
42.2
18,88.8
18.8
10,912.8
10.9
28,118.9
28.1
In den Gemengen kann Calciumoxyd oder das entsprechende Borat und/oder Silikat durch Magnesiumoxyd ganz oder zum Teil ersetzt werden. Von den Oxyden des Strontiums und/oder Bariums und/oder Lanthans sollen nur bis zu 12 Gewichtsprozent verwendet werden, um die chemische Resistenz der erschmolzenen Gläser nicht ungünstig zu beeinflussen.Calcium oxide or the corresponding borate and / or silicate can be replaced by magnesium oxide in the mixtures be replaced in whole or in part. Of the oxides of strontium and / or barium and / or Lanthanum should only be used up to 12 percent by weight in order to reduce the chemical resistance of the melted Do not influence glasses unfavorably.
Den Gemengen können, was innerhalb des Erfindungsgedankens liegt, kleinere Mengen an stabilisierenden Substanzen, wie Aluminiumoxyd'u. ä., oder den Schmelzfluß fördernde Substanzen, wie Alkalioxyd, Kryolith u. ä., oder entfärbende Substanzen, wie Arsenik oder Nitrate, beigegeben werden.The mixtures can do what is within the scope of the invention is, smaller amounts of stabilizing substances, such as aluminum oxide. Ä., or Substances promoting the melt flow, such as alkali oxide, cryolite and the like, or decolorizing substances, such as Arsenic or nitrates.
Claims (6)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL31315A DE1090398B (en) | 1958-09-19 | 1958-09-19 | Optical crown glasses |
| GB30100/59A GB880323A (en) | 1958-09-19 | 1959-09-03 | Improvements in or relating to optical glasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL31315A DE1090398B (en) | 1958-09-19 | 1958-09-19 | Optical crown glasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1090398B true DE1090398B (en) | 1960-10-06 |
Family
ID=7265534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEL31315A Pending DE1090398B (en) | 1958-09-19 | 1958-09-19 | Optical crown glasses |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1090398B (en) |
| GB (1) | GB880323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3201943A1 (en) * | 1982-01-22 | 1983-08-04 | Schott Glaswerke, 6500 Mainz | OPTICAL GLASS WITH refractive index of 1.60 - 1.69 AND PAY OFF> = 54, WITH PARTICULARLY LOW DENSITY AND PARTICULARLY CHEMICAL RESISTANCE |
-
1958
- 1958-09-19 DE DEL31315A patent/DE1090398B/en active Pending
-
1959
- 1959-09-03 GB GB30100/59A patent/GB880323A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3201943A1 (en) * | 1982-01-22 | 1983-08-04 | Schott Glaswerke, 6500 Mainz | OPTICAL GLASS WITH refractive index of 1.60 - 1.69 AND PAY OFF> = 54, WITH PARTICULARLY LOW DENSITY AND PARTICULARLY CHEMICAL RESISTANCE |
Also Published As
| Publication number | Publication date |
|---|---|
| GB880323A (en) | 1961-10-18 |
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