JPS63274638A - Composition for high refractive index low melting point glass - Google Patents
Composition for high refractive index low melting point glassInfo
- Publication number
- JPS63274638A JPS63274638A JP10756487A JP10756487A JPS63274638A JP S63274638 A JPS63274638 A JP S63274638A JP 10756487 A JP10756487 A JP 10756487A JP 10756487 A JP10756487 A JP 10756487A JP S63274638 A JPS63274638 A JP S63274638A
- Authority
- JP
- Japan
- Prior art keywords
- refractive index
- melting point
- low melting
- high refractive
- 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.)
- Granted
Links
- 239000011521 glass Substances 0.000 title claims abstract description 37
- 238000002844 melting Methods 0.000 title claims abstract description 29
- 230000008018 melting Effects 0.000 title claims abstract description 29
- 239000000203 mixture Substances 0.000 title claims abstract description 21
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 abstract description 11
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 abstract description 8
- QZQVBEXLDFYHSR-UHFFFAOYSA-N gallium(III) oxide Inorganic materials O=[Ga]O[Ga]=O QZQVBEXLDFYHSR-UHFFFAOYSA-N 0.000 abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 abstract description 6
- 229910011255 B2O3 Inorganic materials 0.000 abstract description 5
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 abstract description 5
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract description 3
- 229910003069 TeO2 Inorganic materials 0.000 abstract description 3
- 229910052681 coesite Inorganic materials 0.000 abstract description 3
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 3
- 229910052682 stishovite Inorganic materials 0.000 abstract description 3
- LAJZODKXOMJMPK-UHFFFAOYSA-N tellurium dioxide Chemical compound O=[Te]=O LAJZODKXOMJMPK-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052905 tridymite Inorganic materials 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052593 corundum Inorganic materials 0.000 abstract description 2
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 abstract description 2
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 abstract description 2
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 2
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 abstract description 2
- KOPBYBDAPCDYFK-UHFFFAOYSA-N Cs2O Inorganic materials [O-2].[Cs+].[Cs+] KOPBYBDAPCDYFK-UHFFFAOYSA-N 0.000 abstract 2
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 abstract 2
- AKUNKIJLSDQFLS-UHFFFAOYSA-M dicesium;hydroxide Chemical compound [OH-].[Cs+].[Cs+] AKUNKIJLSDQFLS-UHFFFAOYSA-M 0.000 abstract 2
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 1
- 238000004031 devitrification Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 9
- 230000007423 decrease Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000005304 optical glass Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- -1 Of course Chemical class 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000002834 transmittance Methods 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
- C03C3/04—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
- C03C3/074—Glass compositions containing silica with less than 40% silica by weight containing lead containing boron containing zinc
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野１ 本発明は′Ｉ＆屈折率低融点ガラス用組成物に関する。[Detailed description of the invention] [Industrial application field 1 The present invention relates to compositions for 'I & low melting index glasses.
本発明の高屈折率低融点ガラス用組成物は、コンパクト
ディスクプレーヤ用ピックアップレンズをダイレフ１−
プレス法で製造する際に好適なガラス組成物であり、ま
たその他の各種光学ガラス等の製造に利用可能である。The composition for high refractive index and low melting point glass of the present invention can be used for pickup lenses for compact disc players.
It is a glass composition suitable for manufacturing by pressing method, and can also be used for manufacturing various other optical glasses.
［従来の技術］
高屈折率低融点ガラスとして、米国特許第４゜４８３．
９３１号明ｍ書には、Ｂ１２０３−ＰｂＯ−Ｇａ２０３
系ガラスが開示されており、この従来例のガラスは赤外
透過性にすぐれているという特長を有する。[Prior Art] As a high refractive index low melting point glass, US Pat. No. 4,483.
No. 931 Memorandum has B1203-PbO-Ga203
This conventional glass is characterized by excellent infrared transmittance.
［発明が解決しようとする問題点］
しかしながら上記従来例のガラスはその製造時に失透し
易く、太閤生産が困難であるという欠点があった。[Problems to be Solved by the Invention] However, the glass of the above-mentioned conventional example has a disadvantage in that it tends to devitrify during its manufacture, making it difficult to produce it in bulk.
従って本発明の目的は、高屈折率低融点ガラスを安定に
製造することができる組成物を提供することにある。Therefore, an object of the present invention is to provide a composition that can stably produce a high refractive index, low melting point glass.
〔問題点を解決するための手段１
上記目的達成のために研究を積み重ねた結果、網目構成
酸化物ではＢ Ｏ，５ｉ０２、ＧｅＯ２が、また二価
金ｒｏｌｌ化物ではＢａｄ。[Means for Solving the Problem 1] As a result of repeated research to achieve the above objective, network oxides such as B 2 O, 5i02, and GeO2 were found to be bad, and divalent gold roll compounds were found to be bad.
ＳｒＯ，ＣｄＯが、さらにアルカリ金属酸化物ではＣ５
２０が、ガラスの耐失透性を向上させるのに有効な成分
であり、これらの成分のうち、Ｂ２Ｏ３、ＢａＯ１Ｃａ
Ｏ，Ｃ５２ｏが特に有効な成分であることを見い出した
。SrO, CdO, and alkali metal oxides such as C5
20 is a component effective for improving the devitrification resistance of glass, and among these components, B2O3, BaO1Ca
It has been found that O, C52o is a particularly effective component.
そこでＢｉ２０３−ＰｂＯ−Ｇａ２０３系ガラス組成物
に上記の耐失透性向上成分を含有させた各種ガラス組成
物について、その失透性の有無のみならず、得られたガ
ラスの屈折率及び融点をも測定し、耐失透性、高屈折率
及び低融点の三者を満足づるガラス組成物を追究した結
果、下記の組成を有するガラス組成物が耐失透性、高屈
折率及び低融点の三者を満足することを見い出し、本発
明を完成した。Therefore, regarding various glass compositions in which the Bi203-PbO-Ga203-based glass composition contains the above-mentioned devitrification resistance improving component, we have investigated not only the presence or absence of devitrification property, but also the refractive index and melting point of the obtained glass. As a result of conducting measurements and searching for a glass composition that satisfies the three requirements of devitrification resistance, high refractive index, and low melting point, we found that a glass composition with the following composition satisfies the three requirements of devitrification resistance, high refractive index, and low melting point. The inventors have discovered that the present invention satisfies the needs of many people, and have completed the present invention.
（ｍｍ％）
Ｂ１２Ｏ３１０〜７５
Ｐｂｏ １０〜７５Ｂｉ２０
３＋ＰｂＯ６０〜９５
Ｇａ２０３ ２〜２０８２０３
１〜１５Ｌ ｌ ２０
０〜２Ｎａ２０
０〜２に２０ ０〜２Ｒｂ、Ｏ
Ｏ〜２
ｃ Ｓ ２０ ０〜５ｔｖｌｏ
Ｏ〜２ＣａＯ
Ｏ〜５
ＳｒＯＯ〜１０
ＢａＯＯ〜３０
Ｃｄｏ Ｏ〜３
０ＺｎＯＯ〜２
Ｗ０３ ０〜１ＱＡＩ２０３
０〜２ＧｅＯ２０〜２０
Ｓｉ Ｏ２０〜１０
ＧｅＯ２＋ＳｉＯ２０〜２０
ＴｅＯ２０〜２０
上記組成を有する本発明の高屈折率低融点ガラス用組成
物のうち、下記の組成を有するものが特に好ましい。(mm%) B12O310~75 Pbo 10~75Bi20
3+PbO60~95 Ga203 2~208203
1~15L l 20
0~2Na20
20 to 0 to 2 0 to 2Rb, O
O~2 c S 20 0~5tvlo
O~2CaO
O~5 SrOO~10 BaOO~30 Cdo O~3
0ZnOO~2 W03 0~1QAI203
0-2GeO20-20SiO20-10GeO2+SiO20-20TeO20-20 Among the high refractive index, low melting point glass compositions of the present invention having the above compositions, those having the following compositions are particularly preferred.
（ｉｆ２聞％）
Ｂｉ２０３ ３０〜６０ＰｂＯ３０
〜６０
Ｂ １２０３＋ＰｂＯ７５〜９０
Ｇａ２０３ ５〜１０Ｂ２０３
２〜１０ＭａＯＯ〜１
ｃａｏ ｏ〜１ＳｒＯＯ
〜５
ＢａＯＯ〜１０
Ｃｄ０ ０〜１０
ＺｎＯｏ〜１
Ｃ５２０＋ＢａＯ＋ｃｄ０ １〜１０ＷＯ３０〜５
Ａｉ２０３ ０〜１ＧｅＯ２０〜
１０
Ｓｉｏ２ ０〜５ＧｅＯ２＋Ｓ
ｉＯ２０〜１０
ＴｅＯ□ Ｏ〜１０本発明の
高屈折率低融点ガラス用組成物を構成する各成分の組成
限定理由について述べる。(if2%) Bi203 30~60PbO30
~60 B 1203+PbO75~90 Ga203 5~10B203
2~10MaOO~1cao~1SrOO
~5 BaOO~10 Cd0 0~10
ZnOo~1 C520+BaO+cd0 1~10WO30~5 Ai203 0~1GeO20~
10 Sio2 0~5GeO2+S
iO20~10 TeO□O~10 The reason for limiting the composition of each component constituting the high refractive index, low melting point glass composition of the present invention will be described.
先ず、Ｂｉ２Ｏ３及びＰｂＯは、含有量が多いほど高屈
折率、低融点となり望ましいが、Ｂｉ２Ｏ３とＰｂＯの
どちらか１万が１０％を下まわるか、７５％を上まわる
と、耐失透性が悪くなる。そこで、Ｂｉ２Ｏ３を１０〜
７５％（望ましくは、３０〜６０％）、ＰｂＯを１０〜
９５％（同、３０〜６０％）に限定した。ざらにＢｉ２
Ｏ３とＰｂＯの合間が６０％を下まわると目的とする上
記特性がえられず、また台場が９５％を超えると耐失透
性が悪（なる。そこで、Ｂｉ２Ｏ３とＰｂＯの合量ヲ６
０〜９５％（ＩｆｉＪ、７５〜９０％）に限定した。First of all, the higher the content of Bi2O3 and PbO, the higher the refractive index and the lower the melting point, which is desirable, but if either Bi2O3 or PbO is less than 10% or more than 75%, the devitrification resistance will deteriorate. Deteriorate. Therefore, Bi2O3 is 10~
75% (preferably 30-60%), 10-10% PbO
95% (30-60%). Zarani Bi2
If the ratio between O3 and PbO is less than 60%, the desired properties cannot be obtained, and if the ratio exceeds 95%, the devitrification resistance becomes poor. Therefore, the total amount of Bi2O3 and PbO is
0-95% (IfiJ, 75-90%).
次にＧａ２Ｏ３は２％を下まわると耐失透性が悪く本発
明の目的を達成できない。また２０％を上まわるとガラ
スの融点が上昇しかつ屈折率が低下し目的とするガラス
が冑られない。ぞこでＧａ２Ｏ３は２〜２０％（同、５
〜１０％）に限定した。Next, if Ga2O3 is less than 2%, devitrification resistance is poor and the object of the present invention cannot be achieved. On the other hand, if it exceeds 20%, the melting point of the glass will rise and the refractive index will drop, making it difficult to form the desired glass. Ga2O3 is 2-20% (same, 5
~10%).
次に、Ｂ２Ｏ３はガラスを安定にし、失透温度を下げる
作用を有するが、１％を下まわると上記作用が得られず
、又１５％を上まわると屈折率が低下し、本発明の目的
を達成できなくなる。そこで、Ｂ２Ｏ３は１〜１５％（
同、２〜１０％）に限定した。Next, B2O3 has the effect of stabilizing the glass and lowering the devitrification temperature, but if it is less than 1%, the above effect cannot be obtained, and if it is more than 15%, the refractive index decreases, which is the purpose of the present invention. becomes impossible to achieve. Therefore, B2O3 is 1-15% (
2% to 10%).
次に、Ｌ＊ ｏ、Ｎａ Ｏ，Ｋ ｏ、Ｒｂ２ｏ、
Ｃ５２０は少ｆｆｉ添加で失透温度を下げ、融点を下げ
る作用を有するが、各成分の含有量が多すぎると、屈折
率が下がり、耐久性を損うため、１−ｉｏを０〜２％、
Ｎａ２Ｏを０〜２％、Ｋ Ｏ？０〜２％、Ｒｂ２Ｏを
０〜２％、ＣＳ Ｏを０〜５％に限定し、Ｌｉ２Ｏ、
Ｎａ Ｏ，Ｋ ０ＳＲｂ２０、Ｃ５２０の含量を０
〜５％（同、０〜２％）に限定した。Next, L* o, Na O, K o, Rb2o,
C520 has the effect of lowering the devitrification temperature and melting point by adding a small amount of ffi, but if the content of each component is too large, the refractive index decreases and durability is impaired, so 1-io is added to 0 to 2%. ,
0-2% Na2O, KO? 0 to 2%, RbO to 0 to 2%, CSO to 0 to 5%, LiO,
Na O, K 0SRb20, C520 content is 0
-5% (same, 0-2%).
次にＭａｃ、Ｃａｂ、ＳｒＯ，Ｂａｄ、ＺｎＯ１ＣｄＯ
は少量の添加で屈折率をアルカリ成分はど下げずに失透
温度を下げ、耐久性を向上させる作用を有するが、各含
有量が多すぎては、融点が上帰し、耐失透性も患くなり
本発明の目的を達成できない。そこで、ＭＱＯ’２０〜
２％（同、０〜１％＞ 、ＣａＯを０〜５％（同、０〜
１％）、ＳｒＯを０〜１０％（同、０〜５％）、ＢａＯ
を０〜３０％（同、０〜１０％）、ＺｎＯを０〜２（同
、０〜１％）、ＣｄＯを０〜３０％（同、０〜１０％）
に限定し、かつＭＱＯ，Ｃａｂ。Next, Mac, Cab, SrO, Bad, ZnO1CdO
When added in small amounts, it has the effect of lowering the devitrification temperature and improving durability without lowering the refractive index or alkaline component. However, if each content is too large, the melting point increases and the devitrification resistance decreases. The object of the present invention cannot be achieved. Therefore, MQO'20~
2% (same, 0-1%>, CaO 0-5% (same, 0-1%)
1%), SrO 0-10% (same, 0-5%), BaO
0-30% (same, 0-10%), ZnO 0-2 (same, 0-1%), CdO 0-30% (same, 0-10%)
and MQO, Cab.
ＳｒＯ，Ｂａｄ、ＺｎＯ１Ｃｄ ０（７）合間を０〜３
０％（同、０〜１０％）に限定した。またＣ５２０、［
３ａＯ，ＣｄＯの合間は１〜１０％であるのが好ましい
。SrO, Bad, ZnO1Cd 0(7) Interval 0-3
0% (same, 0-10%). Also C520, [
The content between 3aO and CdO is preferably 1 to 10%.
次に、Ｙ２Ｏ３、しＢ２Ｏ３、ＴｉＯ２、ＺｒＯ２、Ｔ
ａ２ｏ５、Ｎｂ２Ｏ５は少１ｆｌ ｍ 加テ耐久性を向
上させる作用を有するが、合喚が２％を越すと耐失透性
が悪化し、融点を上げる。そこで、これらの成分の合間
を０〜２％（同、０〜１％）に限定した。Next, Y2O3, B2O3, TiO2, ZrO2, T
A2O5 and Nb2O5 have the effect of improving the durability under a small amount of 1 fl m, but if the combined content exceeds 2%, the devitrification resistance deteriorates and the melting point increases. Therefore, the content of these components was limited to 0 to 2% (same as 0 to 1%).
またＷＯはＹ Ｏ、Ｌａ２Ｏ３，ＴｉＯ２、ＺｒＯ２
、Ｔａ２０５、Ｎｂ２Ｏ５はど融点を上げずに、耐久性
を向上させる作用を有するが、１０％を越えると耐失速
性が悪くなる。そこでＷＯ３を０〜１０％（同、０〜５
％）に限定した。Also, WO is Y O, La2O3, TiO2, ZrO2
, Ta205, and Nb2O5 have the effect of improving durability without raising the melting point, but if it exceeds 10%, stall resistance deteriorates. Therefore, add 0 to 10% of WO3 (same, 0 to 5%).
%).
次に、Ａ１２０３は少Ｍ添加で耐久性を良くする作用を
有するが、２％を超えると耐失透性が悪化し、熔解も困
難となる。そこで、Ａｌ２Ｏ３を０〜２％（同、０〜１
％）に限定した。Next, A1203 has the effect of improving durability when added with a small amount of M, but when it exceeds 2%, devitrification resistance deteriorates and melting becomes difficult. Therefore, Al2O3 was added at 0 to 2% (same as 0 to 1%).
%).
ＧｅＯ及びＳ ｉ Ｏ２はガラスの失透に対する安定性
を上げ、４（父性を向」−させる信用をｈするが、多聞
では、屈折率が低下し融点が上昇するため、本発明の［
コ的を達成できない。そこで、ＧｅＯ２を０〜２０％（
同、０〜１０％）、５ｉ０２を０〜１０％（同、０〜５
％）に限定し、ＧｅＯとＳ ＋ ０２の合量を０〜２０
％（同、０〜１０％）に限定した。Although GeO and SiO2 increase the stability of the glass against devitrification and are believed to promote paternity, they generally lower the refractive index and increase the melting point.
I can't achieve my goals. Therefore, we added 0 to 20% GeO2 (
Same, 0-10%), 5i02 0-10% (Same, 0-5
%), and the total amount of GeO and S+02 is 0 to 20
% (same, 0-10%).
又、ＴｅＯ２は屈折率を下げずに安定化作用をイｊ″’
ｌるが、２０％を超えると上記作用が得られない。そこ
でＴｅＯ２を０〜２０％（同、０〜１０％）に限定した
。Moreover, TeO2 has a stabilizing effect without lowering the refractive index.
However, if it exceeds 20%, the above effects cannot be obtained. Therefore, TeO2 was limited to 0 to 20% (same as 0 to 10%).
上記の組成範囲の各種酸化物から本発明の高屈折率低融
点ガラス用組成物が得られるが、ガラス熔融バッチとし
て、Ｌ２酎化物に相当する炭酸塩、硝酸塩、水酸化物、
水和物などを用いることがでさることはもちろんである
。The composition for high refractive index, low melting point glass of the present invention can be obtained from various oxides in the above composition range, but as a glass melting batch, carbonates, nitrates, hydroxides,
Of course, hydrates and the like can also be used.
［実施例１
（１１ｉ’ｌ１ｉ１折率低融点ガラスの製造表１、表２
、表３及び表４に示した組成になるように調合した原料
を金または白金ルツボに入れ、７５０〜９００℃で熔融
し、１毀ｉｆｉ＾澄した後、鉄マＪ型に流し込み、徐冷
して各種高屈１バ率低融点ガラスをｕＪだ。この方法に
よれば、失透のない均質なガラスを大最に製造すること
ができることが明らかとなった。[Example 1 (Production of 11i'l1i1 refractive index low melting point glass Table 1, Table 2
The raw materials prepared to have the compositions shown in Tables 3 and 4 are placed in a gold or platinum crucible, melted at 750 to 900°C, clarified to 100%, and then poured into a J-shaped iron mold and slowly cooled. UJ produces various types of high refractive 1 bar and low melting point glasses. It has become clear that this method can produce the most homogeneous glass without devitrification.
（２） 高屈折率低融点ガラスの物性測定得られた高
屈折率低融点ガラスについて日本光学硝子工業会規格に
従ってガラス転移点（Ｔ（＋＞、屈折率（ｎｄ）、液相
温度（ＬＴ）を測定した。測定結果は表１、表２、表３
及び表４に示した。(2) Measurement of physical properties of high refractive index, low melting point glass Regarding the obtained high refractive index, low melting point glass, glass transition point (T(+>), refractive index (nd), liquidus temperature (LT)) The measurement results are shown in Table 1, Table 2, and Table 3.
and shown in Table 4.
これらの表から明らかなように、本発明のガラスは、い
ずれも屈折率（ｎｄ ）が２．０を超えており、高屈折
率である。また本発明のガラスはガラス転移点（Ｔｏ
）がいずれも４００℃以下であり、ダイレクトプレスが
充分可能なものである。As is clear from these tables, all of the glasses of the present invention have a refractive index (nd) exceeding 2.0, which is a high refractive index. Further, the glass of the present invention has a glass transition point (To
) are all below 400°C, and direct pressing is fully possible.
さらに本発明のガラスは従来技術として挙げた米国特許
第４．４８３．９３１号明ｌｌＩ書に記載のガラスに対
応する比較例１〜５のガラスに比べ、液相温度がはるか
に低く、安定であって耐失透性が向Ｉ Ｌ、ていること
が明らかである。Furthermore, the glass of the present invention has a much lower liquidus temperature and is more stable than the glasses of Comparative Examples 1 to 5, which correspond to the glasses described in U.S. Pat. No. 4,483,931, cited as prior art. It is clear that the devitrification resistance is improved.
［発明の効渠］
以上述べたＪ：うに、本発明によれば、高屈折率かつ低
融点であり、かつ均質で失透のないガラスを人聞に製造
することが可能になった。またダイレクトプレスによる
レンズの製造が可能になり、高屈折率の光学ガラスとし
て種々の光学製品への使用が可能となる等その実用的価
値は多大である。[Effects of the Invention] As described above, according to the present invention, it has become possible to manually produce glass that has a high refractive index and a low melting point, is homogeneous, and is free from devitrification. Furthermore, it has become possible to manufacture lenses by direct pressing, and it has great practical value, such as being able to be used in various optical products as optical glass with a high refractive index.
Claims (1)
＿２＋Ｔａ＿２Ｏ＿５ ＋Ｎｂ＿２Ｏ＿５） ０〜２ ＷＯ＿３ ０〜１０ Ａｌ＿２Ｏ＿３ ０〜２ ＧｅＯ＿２ ０〜２０ ＳｉＯ＿２ ０〜１０ ＧｅＯ＿２＋ＳｉＯ＿２ ０〜２０ ＴｅＯ＿２ ０〜２０ を含むことを特徴とする高屈折率低融点ガラス用組成物
。(1) In weight% Bi_2O_3 10-75 PbO 10-75 Bi_2O_3+PbO 60-95 Ga_2O_3 2-20 B_2O_3 1-15 Li_2O 0-2 Na_2O 0-2 K_2O 0-2 Rb_2O 0-2 Cs_2O 0-5 ( Li_2O+Na_2O+K_2O +Rb_2O+Cs_2O) 0-5 MgO 0-2 CaO 0-5 SrO 0-10 BaO 0-30 CdO 0-30 ZnO 0-2 (MgO+CaO+SrO +BaO+CdO+ZnO) 0-30 (La_2O_3+Y_2O_3+TiO_2+ZrO
_2+Ta_2O_5 +Nb_2O_5) 0-2 WO_3 0-10 Al_2O_3 0-2 GeO_2 0-20 SiO_2 0-10 GeO_2+SiO_2 0-20 TeO_2 0-20 A composition for high refractive index, low melting point glass, characterized in that it contains:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10756487A JPS63274638A (en) | 1987-04-30 | 1987-04-30 | Composition for high refractive index low melting point glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10756487A JPS63274638A (en) | 1987-04-30 | 1987-04-30 | Composition for high refractive index low melting point glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63274638A true JPS63274638A (en) | 1988-11-11 |
| JPH0432778B2 JPH0432778B2 (en) | 1992-06-01 |
Family
ID=14462367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10756487A Granted JPS63274638A (en) | 1987-04-30 | 1987-04-30 | Composition for high refractive index low melting point glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63274638A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002034683A1 (en) * | 2000-10-23 | 2002-05-02 | Asahi Glass Company, Limited | Glass for press molding and lens |
| WO2003022763A3 (en) * | 2001-09-10 | 2003-08-14 | Schott Glas | Bismuth oxide-containing glass comprising lanthanum oxide |
| JP2005350672A (en) * | 2004-06-10 | 2005-12-22 | General Electric Co <Ge> | Composition for scintillator array and method |
| JP2007099610A (en) * | 2005-09-06 | 2007-04-19 | Ohara Inc | Optical glass |
| JP2008105865A (en) * | 2006-10-23 | 2008-05-08 | Ohara Inc | Optical glass |
| JP2008266031A (en) * | 2007-04-16 | 2008-11-06 | Ohara Inc | Method for producing optical glass |
| JP2009263191A (en) * | 2008-04-29 | 2009-11-12 | Ohara Inc | Optical glass |
| JP2009280429A (en) * | 2008-05-21 | 2009-12-03 | Isuzu Seiko Glass Kk | Optical glass |
| CN101913768A (en) * | 2010-08-20 | 2010-12-15 | 中国建筑材料科学研究总院 | Hydroxyl-removal and no-devitrification multispectral transmission barium-gallium-germanium glass |
| CN102092939A (en) * | 2005-09-06 | 2011-06-15 | 株式会社小原 | Optical glass |
| WO2014004435A1 (en) * | 2012-06-25 | 2014-01-03 | Schott Corporation | Silica and fluoride doped heavy metal oxide glasses for visible to mid-wave infrared radiation transmitting optics and preparation thereof |
| RU2760890C1 (en) * | 2020-12-22 | 2021-12-01 | федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский политехнический университет Петра Великого" (ФГАОУ ВО "СПбПУ") | Highly refractive glass |
| EP4129942A1 (en) | 2021-08-03 | 2023-02-08 | Corning Incorporated | Borate and silicoborate optical glasses with high refractive index and low liquidus temperature |
| NL2029053B1 (en) | 2021-08-03 | 2023-02-17 | Corning Inc | Borate and Silicoborate Optical Glasses with High Refractive Index and Low Liquidus Temperature |
-
1987
- 1987-04-30 JP JP10756487A patent/JPS63274638A/en active Granted
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7098158B2 (en) | 2000-10-23 | 2006-08-29 | Asahi Glass Company, Limited | Glass for press molding, and lens |
| WO2002034683A1 (en) * | 2000-10-23 | 2002-05-02 | Asahi Glass Company, Limited | Glass for press molding and lens |
| WO2003022763A3 (en) * | 2001-09-10 | 2003-08-14 | Schott Glas | Bismuth oxide-containing glass comprising lanthanum oxide |
| JP2005350672A (en) * | 2004-06-10 | 2005-12-22 | General Electric Co <Ge> | Composition for scintillator array and method |
| CN102092939A (en) * | 2005-09-06 | 2011-06-15 | 株式会社小原 | Optical glass |
| JP2007099610A (en) * | 2005-09-06 | 2007-04-19 | Ohara Inc | Optical glass |
| JP2008105865A (en) * | 2006-10-23 | 2008-05-08 | Ohara Inc | Optical glass |
| JP4590386B2 (en) * | 2006-10-23 | 2010-12-01 | 株式会社オハラ | Optical glass |
| US7867934B2 (en) * | 2006-10-23 | 2011-01-11 | Ohara, Inc. | Optical glass |
| JP2008266031A (en) * | 2007-04-16 | 2008-11-06 | Ohara Inc | Method for producing optical glass |
| JP2009263191A (en) * | 2008-04-29 | 2009-11-12 | Ohara Inc | Optical glass |
| JP2009280429A (en) * | 2008-05-21 | 2009-12-03 | Isuzu Seiko Glass Kk | Optical glass |
| CN101913768A (en) * | 2010-08-20 | 2010-12-15 | 中国建筑材料科学研究总院 | Hydroxyl-removal and no-devitrification multispectral transmission barium-gallium-germanium glass |
| WO2014004435A1 (en) * | 2012-06-25 | 2014-01-03 | Schott Corporation | Silica and fluoride doped heavy metal oxide glasses for visible to mid-wave infrared radiation transmitting optics and preparation thereof |
| US8846555B2 (en) | 2012-06-25 | 2014-09-30 | Schott Corporation | Silica and fluoride doped heavy metal oxide glasses for visible to mid-wave infrared radiation transmitting optics and preparation thereof |
| CN104619659A (en) * | 2012-06-25 | 2015-05-13 | 肖特公司 | Silica and fluoride doped heavy metal oxide glasses for visible to mid-wave infrared radiation transmitting optics and preparation thereof |
| JP2015523958A (en) * | 2012-06-25 | 2015-08-20 | ショット コーポレーションＳｃｈｏｔｔ Ｃｏｒｐｏｒａｔｉｏｎ | Silica and fluoride doped heavy metal oxide glasses for visible to medium wave infrared transmission optics and their manufacture |
| CN104619659B (en) * | 2012-06-25 | 2017-03-08 | 肖特公司 | Heavy metal oxide glass mixed with silicon dioxide and fluoride for the visible optics to medium-wave infrared radiation of transmission and preparation method thereof |
| RU2760890C1 (en) * | 2020-12-22 | 2021-12-01 | федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский политехнический университет Петра Великого" (ФГАОУ ВО "СПбПУ") | Highly refractive glass |
| EP4129942A1 (en) | 2021-08-03 | 2023-02-08 | Corning Incorporated | Borate and silicoborate optical glasses with high refractive index and low liquidus temperature |
| NL2029053B1 (en) | 2021-08-03 | 2023-02-17 | Corning Inc | Borate and Silicoborate Optical Glasses with High Refractive Index and Low Liquidus Temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0432778B2 (en) | 1992-06-01 |
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