JPS60122746A - Optical glass - Google Patents
Optical glassInfo
- Publication number
- JPS60122746A JPS60122746A JP22994983A JP22994983A JPS60122746A JP S60122746 A JPS60122746 A JP S60122746A JP 22994983 A JP22994983 A JP 22994983A JP 22994983 A JP22994983 A JP 22994983A JP S60122746 A JPS60122746 A JP S60122746A
- Authority
- JP
- Japan
- Prior art keywords
- optical glass
- cao
- glass
- refractive index
- specific gravity
- 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
- 239000005304 optical glass Substances 0.000 title claims abstract description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 3
- 230000005484 gravity Effects 0.000 claims description 14
- 239000011521 glass Substances 0.000 abstract description 11
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 abstract description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 4
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 abstract description 4
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052593 corundum Inorganic materials 0.000 abstract description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- 239000007858 starting material Substances 0.000 abstract 1
- 238000004031 devitrification Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- GJJSDZSDOYNJSW-UHFFFAOYSA-N lanthanum(3+);borate Chemical compound [La+3].[O-]B([O-])[O-] GJJSDZSDOYNJSW-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 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
- C03C3/064—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)
Abstract
Description
【発明の詳細な説明】
本発明はｎ ｄ ＝ １．６７〜１．７８ 、 νｄ
＝４１〜５５゜比重３．０〜３．９なる特性を有する比
較的軽い光学ガラスに関り゛る。DETAILED DESCRIPTION OF THE INVENTION The present invention provides n d = 1.67 to 1.78, νd
The present invention relates to a relatively light optical glass having the characteristics of =41-55° and specific gravity of 3.0-3.9.
」記の光学恒数を満足する光学ガラスは既に数多く知ら
れている。例えば、特公昭３６−１３９４号公報には、
Ｔｈ０２．ＣｄＯを含むガラスが、そして特公昭５０−
６３２６号公報には、多１１のＧｄ２Ｏ３を含むガラス
がそれぞれ教示されている。またこれらの成分を含まな
いしのとしては、例えば、特公昭４４−２６９１１尼公
報に見られる如く、多量のＢａＯを含むガラスや特開昭
５０−１０１４１４号公報に見られる如く、多量のＺｎ
Ｏ，Ｔａ２０５を含むガラスが知られている。しかし、
これらの従来ガラスはＺｎＯ１Ｔａ２０ｓ、ｓａｏ等を
多聞に含有しているため、比重が大きいのが通例である
。Many optical glasses are already known that satisfy the optical constants described in ``. For example, in Japanese Patent Publication No. 36-1394,
Th02. Glass containing CdO, and
No. 6,326 teaches a number of glasses containing Gd2O3. Glasses that do not contain these components include, for example, glass containing a large amount of BaO, as seen in Japanese Patent Publication No. 44-26911, and glass containing a large amount of Zn, as shown in Japanese Patent Application Laid-open No. 101414-1982.
Glass containing O, Ta205 is known. but,
Since these conventional glasses contain a large amount of ZnO1Ta20s, SAO, etc., they usually have a high specific gravity.
しかるに近年、光学機器の分野では、小型軽量化が市場
の趨勢となっており、軽いレンズ累月の開発が強く望ま
れている。However, in recent years, in the field of optical instruments, the market trend has been toward smaller and lighter lenses, and there is a strong desire to develop lightweight lenses.
本発明の目的は、有害物質であるＴｈ０２゜０ｄＯや高
価な成分であるＧｄ２Ｏ３を含まず、比重が３．０〜３
．９の範囲にあって、しかも光学恒数が上記の範囲にあ
る比較的軽い高屈折率低分散ガラスを捉供することにあ
り、そうした目的番よ、本発明のガラス組成に示す如く
、高屈折率を与える割には比較的小さな比重を与えるＮ
ｂｚＯｓ及びＣａＯを必須成分として含有させ、比重及
び分散を大きくする成分の含＠石を厳密に限定すること
により達成される。The purpose of the present invention is to eliminate the harmful substance Th02゜0dO and the expensive component Gd2O3 and have a specific gravity of 3.0 to 3.
．． 9 and whose optical constants are in the above range. N gives a relatively small specific gravity considering that it gives
This is achieved by containing bzOs and CaO as essential components and strictly limiting the amount of stone containing components that increase specific gravity and dispersion.
すなわち、本発明の光学ガラスは、重量％で、Ｓ ｉｏ
２＋［３２０３３０〜５１，５ｆＯｚ ５〜３２Ｂ２０
３５〜４０．Ｌａ２Ｏ３＋Ｙ２０３ １Ｂ 〜２５．１
−８２０３１６〜２５．ＹｚＯ：ｉ ０〜５Ｎｂ２０５
１〜１５．ＺｒＯ２１〜８゜ｃａｏ＋Ｉｖ１ｇｏ １３
〜３２． Ｃａ０ １３〜３２゜Ｍｇｏ Ｏ〜Ｉｓ、Ｚ
ｎＯ＜１０．ＢａＯ＜５゜ｓｒｏ＜ｓ、ＰｂＯ＜５．１
− ｉ０２＜４゜Ｔａｚ Ｏｓ＜５．ＷＯ３＜５．Ａｌ
１０３ ＜８゜Ｐ２’０５＜８なる組成を有し、ｎｄ
＝ １．６７〜１．７８シｄ＝４１〜５５．比重３．０
〜３．９なる特性を有することを特徴とする。That is, the optical glass of the present invention has S io
2+[320330~51,5fOz 5~32B20
35-40. La2O3+Y203 1B ~25.1
-820316~25. YzO:i 0~5Nb205
1-15. ZrO21~8゜cao+Iv1go 13
~32. Ca0 13~32゜Mgo O~Is, Z
nO<10. BaO<5゜sro<s, PbO<5.1
- i02<4°TazOs<5. WO3<5. Al
103 <8°P2'05<8, nd
= 1.67-1.78 sid = 41-55. Specific gravity 3.0
It is characterized by having a characteristic of ~3.9.
本発明の光学ガラスに関し、構成成分の限定押出を述べ
ると、３ｉ０２及びＢ２Ｏ３は所望の）■折率範囲を得
るのに合Ｍで３０〜５０％に限定される。Regarding the optical glass of the present invention, to describe the limited extrusion of the constituent components, 3i02 and B2O3 are limited to 30 to 50% in total M to obtain the desired refractive index range.
また大量生産するのに充分な耐失透性を得るに【ユ、Ｓ
；０２とＢ２Ｏ３が共存することが必要で、人々５〜３
２％及び５〜４０％とするのが右利である。In addition, in order to obtain sufficient devitrification resistance for mass production,
;02 and B2O3 need to coexist, people 5-3
2% and 5-40% are right-handed.
Ｌａ２Ｏ３は高屈折率と低分散を維持するための必須成
分であるが、化学的耐久性を劣化させ、比重を大きくす
る成分でもあるので、１６〜２５％１こ限定される。Ｙ
２ ＣｈはＬ−ａ２０３と同等の光学恒数を与え、かつ
、ＬａｚＯ３より比重を小さくするので有効だが、高価
な原料なので５％以下に限定される。Ｎｂ２Ｏ５は前述
のように高屈折率と低比重を得るのに必須な成分であり
１％以上必要だが、１５％を越えると所望の高いアツベ
数を維持できない。ＺｒＯ２はＮ１）２０５とほぼ同等
の比重を与え、かつ、アツベ数を大きくするので、１％
以上必要だが、８％を越えると急激に耐失透Ｕが悪化す
る。ＣａＯはガラスを安定にし、かつ、低比重を与える
ので１３％以」−必要だが、３２％を越えると逆にガラ
スが不安定になるばかりでなく、化学的耐久性も劣化す
る。ＭＱＯは比重を大きくすることなく、Ｃａｏの一部
と置き換えることができるが、１５％を越えると耐失透
性が悪化する。その他の成分は主として、光学恒数の調
整、耐失透性の改善、溶融性の改善等の目的で添加され
るが、ＺｎＯ，Ｒａｇ、ＳｒＯ，Ｐ、ｂＯ。La2O3 is an essential component for maintaining a high refractive index and low dispersion, but it is also a component that deteriorates chemical durability and increases specific gravity, so it is limited to 16 to 25%. Y
2 Ch is effective because it gives optical constants equivalent to L-a203 and has a smaller specific gravity than LazO3, but since it is an expensive raw material, it is limited to 5% or less. As mentioned above, Nb2O5 is an essential component to obtain a high refractive index and low specific gravity, and 1% or more is required, but if it exceeds 15%, the desired high Abbe number cannot be maintained. ZrO2 gives almost the same specific gravity as N1) 205 and increases the Atsube number, so 1%
This is necessary, but if it exceeds 8%, the devitrification resistance U will deteriorate rapidly. CaO is required to be at least 13% because it stabilizes the glass and gives it a low specific gravity, but if it exceeds 32%, it not only makes the glass unstable, but also deteriorates its chemical durability. MQO can be partially replaced with Cao without increasing the specific gravity, but if it exceeds 15%, devitrification resistance deteriorates. Other components are mainly added for the purpose of adjusting optical constants, improving devitrification resistance, improving meltability, etc., including ZnO, Rag, SrO, P, and bO.
Ｔａ２０５．ＷＯ３は比重な大きくする成分なので夫々
１０％、５％、８％、５％、５％、５％未満に限定され
る。又、Ｔｉ０ａはアツベ数を小さくし、着色を強める
ので４％未満に、Ａｌ２Ｏ３゜Ｐ２Ｏ５は耐失透性を悪
化さＶるので夫々８％未満、６％、６％未満に限定され
る。この外、清澄、潤色等ノ目的テ少ｆｆ１１７）ＡＳ
２０３．５ｂ２０３ 。Ta205. Since WO3 is a component that increases specific gravity, it is limited to less than 10%, 5%, 8%, 5%, 5%, and 5%, respectively. Furthermore, since TiOa reduces the number of spots and strengthens coloring, it is limited to less than 4%, and Al2O3°P2O5 deteriorates devitrification resistance, so it is limited to less than 8%, 6%, and 6%, respectively. In addition to this, there are other purposes such as clearing, embellishing, etc.ff117)AS
203.5b203.
Ｆ等を添加することを妨げるものではない。This does not preclude adding F or the like.
本発明の実施例（各成分は重量％）を次表に示す。（以
下余白）
これらのガラスは、通常使用される条１６粉、硼酸化ラ
ンタン、酸化二Ａブ、酸化ジルコニウム、炭酸カルシウ
ム等の原料の混合物を白金製ルツボにて１３００〜１３
５０℃で溶融し、撹拌して均質化、泡切れを行った後、
適当な温度で予熱した金型に＆／１込み徐冷することに
よって製造でさる。Examples of the present invention (each component is % by weight) are shown in the following table. (Left below) These glasses are made by heating a mixture of commonly used raw materials such as 16 powder, lanthanum borate, diabide oxide, zirconium oxide, calcium carbonate, etc. in a platinum crucible to 1300 to 13
After melting at 50°C, stirring to homogenize, and removing bubbles,
It is manufactured by pouring &/1 into a mold preheated to an appropriate temperature and slowly cooling.
特許出願人 株式会杉保谷硝子
代理人 朝自正幸
手続補正円、（方式）
％式％
１、事件の表示
昭和５８年特許願第２２９９４９号
２、発明の名称
光学ガラス
３、補正をする者
事件との関係 特許出願人
株式会社保谷硝子
４、代理人
東京都港区西新ｍ １−１８−１４ 小里会館５、補正
命令の日付
昭和５９年２月２８日
６、補正の対象Patent Applicant Sugihoya Glass Co., Ltd. Agent Masayuki Asahi Procedural Amendment Yen, (Method) % Formula % 1, Display of Case 1982 Patent Application No. 229949 2, Name of Invention Optical Glass 3, Person Making Amendment Case Relationship with Patent applicant Hoya Glass Co., Ltd. 4, Agent 5 Ozato Kaikan, 1-18-14 Nishishin, Minato-ku, Tokyo, Date of amendment order February 28, 1980 6, Subject of amendment
Claims (1)
３２ ８２０３ ５〜４０ １−ａ２０ｗｌ ＋Ｙｌ！ ０３１６〜２５ ３゜Ｌ
ａ ２０３ １６〜２５ Ｙ２０３ ｏ〜５ Ｎｂ２０ｓ １〜１５ ＺｒＯ２１〜８ ＣａＯ＋ＭＱｏ １３〜３２ ＣａＯ１３〜３２ Ｍｇ０ ０〜１５ ＺｎＯ＜１０ Ｂ ａ Ｏ＜ ５ ＳｒＯ〈８ ＰｂＯ＜５ ＴｉＯｚ ＜４ ７ａｚＯｓ ＜５ ＷＯ３＜５ ＡＩ２０３ ＜（３ Ｐ２０５ ＜８ なる組成を有し、ｎｄ＝ １．６７−１．７８ 、 ｖ
ｄ＝４１〜５５．比重３．０〜３．９なる特性を有する
光学ガラス。[Claims] C'2J weight% S i 02 +8203 30~51 SI02 5~
32 8203 5~40 1-a20wl +Yl! 0316～25 3゜L
a 203 16-25 Y203 o-5 Nb20s 1-15 ZrO21-8 CaO+MQo 13-32 CaO13-32 Mg0 0-15 ZnO<10 B a O< 5 SrO<8 PbO<5 TiOz <4 7az Os<5 WO3<5 AI203 < (3 P205 <8, nd = 1.67-1.78, v
d=41-55. Optical glass having a specific gravity of 3.0 to 3.9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22994983A JPS60122746A (en) | 1983-12-07 | 1983-12-07 | Optical glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22994983A JPS60122746A (en) | 1983-12-07 | 1983-12-07 | Optical glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60122746A true JPS60122746A (en) | 1985-07-01 |
| JPS647014B2 JPS647014B2 (en) | 1989-02-07 |
Family
ID=16900238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22994983A Granted JPS60122746A (en) | 1983-12-07 | 1983-12-07 | Optical glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60122746A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62132741A (en) * | 1985-11-29 | 1987-06-16 | コ−ニング グラス ワ−クス | Optical and ophthalmic glass |
| DE4210011C1 (en) * | 1992-03-27 | 1993-07-15 | Schott Glaswerke, 6500 Mainz, De | |
| JP2009269771A (en) * | 2008-04-30 | 2009-11-19 | Ohara Inc | Optical glass, optical element and optical apparatus |
| DE102009011507A1 (en) | 2009-03-06 | 2010-09-09 | Schott Ag | Optical glass, useful for producing optical elements such as lenses and prisms, comprises silicon dioxide, diboron trioxide, aluminum trioxide, lanthanum oxide, niobium oxide, calcium oxide, zinc oxide, titanium dioxide and zirconium oxide |
| US8207075B2 (en) | 2008-01-31 | 2012-06-26 | Ohara Inc. | Optical glass |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771705B (en) * | 2012-10-18 | 2017-02-15 | 成都光明光电股份有限公司 | Environmentally-friendly optical glass |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4972310A (en) * | 1972-11-13 | 1974-07-12 | ||
| JPS5073914A (en) * | 1973-10-31 | 1975-06-18 | ||
| JPS52127908A (en) * | 1976-04-16 | 1977-10-27 | Corning Glass Works | Glass having high refraction index and low density |
| JPS56100151A (en) * | 1980-01-08 | 1981-08-11 | Fuji Photo Film Co Ltd | Tantalum oxide-free optical glass of high refraction |
-
1983
- 1983-12-07 JP JP22994983A patent/JPS60122746A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4972310A (en) * | 1972-11-13 | 1974-07-12 | ||
| JPS5073914A (en) * | 1973-10-31 | 1975-06-18 | ||
| JPS52127908A (en) * | 1976-04-16 | 1977-10-27 | Corning Glass Works | Glass having high refraction index and low density |
| JPS56100151A (en) * | 1980-01-08 | 1981-08-11 | Fuji Photo Film Co Ltd | Tantalum oxide-free optical glass of high refraction |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62132741A (en) * | 1985-11-29 | 1987-06-16 | コ−ニング グラス ワ−クス | Optical and ophthalmic glass |
| DE4210011C1 (en) * | 1992-03-27 | 1993-07-15 | Schott Glaswerke, 6500 Mainz, De | |
| US8207075B2 (en) | 2008-01-31 | 2012-06-26 | Ohara Inc. | Optical glass |
| JP2009269771A (en) * | 2008-04-30 | 2009-11-19 | Ohara Inc | Optical glass, optical element and optical apparatus |
| DE102009011507A1 (en) | 2009-03-06 | 2010-09-09 | Schott Ag | Optical glass, useful for producing optical elements such as lenses and prisms, comprises silicon dioxide, diboron trioxide, aluminum trioxide, lanthanum oxide, niobium oxide, calcium oxide, zinc oxide, titanium dioxide and zirconium oxide |
| CN101857358A (en) * | 2009-03-06 | 2010-10-13 | 肖特公开股份有限公司 | Opticglass |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS647014B2 (en) | 1989-02-07 |
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