JPS6022656B2 - optical glass - Google Patents
optical glassInfo
- Publication number
- JPS6022656B2 JPS6022656B2 JP11401180A JP11401180A JPS6022656B2 JP S6022656 B2 JPS6022656 B2 JP S6022656B2 JP 11401180 A JP11401180 A JP 11401180A JP 11401180 A JP11401180 A JP 11401180A JP S6022656 B2 JPS6022656 B2 JP S6022656B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- glass
- optical glass
- present
- optical
- 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.)
- Expired
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
- C03C3/064—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
【発明の詳細な説明】
本発明は屈折率１．８２〜１．９９アッべ数２７〜４５
なる光学恒数を有する光学ガラスに関する。Detailed Description of the Invention The present invention has a refractive index of 1.82 to 1.99 and an Abbe number of 27 to 45.
This invention relates to an optical glass having optical constants.
上記した数値範囲の光学恒数を有する光学ガラスは既に
幾つか知られているが、それ等は例えば持公昭３８−１
０７１ｙ号公報に見られる如く、Ｔｈｏ２を含むか、も
しくは特公昭５４一６２４１号公報や持開昭５３−１４
４９１３号公報のようにＧｄ２０３やＹ２０３を必須成
分として含むのが通例である。Some optical glasses having optical constants in the above-mentioned numerical range are already known, for example,
As seen in Publication No. 071y, it contains Tho2, or it contains Tho2, or it contains
It is customary to contain Gd203 and Y203 as essential components, as disclosed in Japanese Patent No. 4913.
しかるに、Ｔｈｏ２はその放射能の故に使用すべきでな
く、ＧＯＯ３やＹ２０３はＧＧＧ（Ｇｄ２０も○，２）
結晶や蛍光体などの応用技術の進歩に伴って供給力の不
足が懸念されて来ている。本発明者はＴｈｏ２を含ます
、Ｃｄ２０３やＹ２０３含量を低減せしめ得るガラス系
を鋭意研究した結果、＆０３一Ｓ；０２−Ｌａ２０３−
Ｙｂ２０３−Ｔａ２０５系もし〈は墨０３一Ｓｉ０２−
Ｌａ２０３一ＹＱ０３−Ｗ０３系もしくは両者の混合系
がその目的に合致することを見し、出した。However, Tho2 should not be used due to its radioactivity, and GOO3 and Y203 are GGG (Gd20 is also ○, 2).
With the advancement of applied technology for crystals, phosphors, etc., there is a growing concern that supply capacity will be insufficient. As a result of intensive research into glass systems that can reduce the content of Cd203 and Y203, including Tho2, the inventor found that &03-S;02-La203-
Yb203-Ta205 series〈Black 03-Si02-
It was found that the La203-YQ03-W03 system or a mixture of both systems met the purpose and was released.
凶２０３やＹ２０３などの原料精製の過程で付随的に製
造されるＹＱ０３は資源的に豊富とは言い難いが、現在
までのところほとんど利用されておらず、用途開発が原
料精製メーカーからも強く望まれている。ＹＱ０３を含
むガラス系は特開昭５１−２７１７号公報などで既に知
られているが、それ等は棚酸系である為、本発明が企図
する高屈折率ガラスを得ようとすると、はなはだしく不
安定になり、安定なガラスを得ることが困難である。し
かるに本発明の如く、棚酸−桂酸混合系にすると容易に
安定なガラスが得られるのである。例えば、添付の第１
図は＆０３−Ｓｉ０２−い２０３−ＹＱ０３一Ｔａ２０
５系の弦０３＝７重量％、Ｓｉ０２＝７重量％における
ガラス化領域を示しているが、＆０３−い２０３−Ｙｂ
２０３−Ｔａ２０５系のＢ２０３＝１４重量％ではガラ
ス化領域は存在しない。YQ03, which is produced incidentally in the process of refining raw materials such as 203 and Y203, cannot be said to be abundant in terms of resources, but to date it has hardly been used, and raw material refining manufacturers also strongly desire to develop applications for it. It is rare. Glass systems containing YQ03 are already known from JP-A No. 51-2717, etc., but since they are shelf acid systems, it is extremely difficult to obtain the high refractive index glass contemplated by the present invention. It is difficult to obtain a stable glass. However, as in the present invention, a stable glass can be easily obtained by using a mixed system of shelf acid and citric acid. For example, the attached first
The diagram is &03-Si02-203-YQ03-Ta20
5 series string 03 = 7% by weight and Si02 = 7% by weight are shown, but &03-203-Yb
When B203 of the 203-Ta205 system is 14% by weight, no vitrified region exists.
また添付の第２図はＢ２０３−Ｓｉ０２一Ｌａ２０３−
ＹＱ０３−Ｗ０３系のＢ０３＝３重量％、Ｓｉ０２＝３
重量％におけるガラス化領域を示しているが、＆０３−
Ｌも０３−ＹＱ０３−Ｗ０３系のＢ２０３＝６重量％で
はガラス化領域は存在しない。本発明は上記の知見に基
づき、本質的に＆０３一Ｓｉ０２−Ｌａ２０３一ＹＱ０
３−Ｔａ２Ｑ系もしくは＆０３−Ｓｉ０２−Ｗ２０３−
Ｙｂ２０３−Ｗ０３系またはその混合系より成り、Ｔｈ
ｏ２を含まず、必要とあらばＧＱ０３やＹ２０３を含ま
ない高屈折率低分散光学ガラスを提供するものである。Also, the attached Figure 2 shows B203-Si02-La203-
YQ03-W03 series B03 = 3% by weight, Si02 = 3
The vitrification area in weight% is shown &03-
When L is 03-YQ03-W03 and B203 is 6% by weight, no vitrification region exists. The present invention is based on the above findings, and essentially consists of &03-Si02-La203-YQ0
3-Ta2Q system or &03-Si02-W203-
Consisting of Yb203-W03 system or a mixture thereof, Th
The present invention provides a high refractive index, low dispersion optical glass that does not contain O2 and, if necessary, GQ03 or Y203.
即ち、本発明に係る光学ガラスは重量％でＢ０３：２〜
９．５ Ｓｉ０２：２〜１０．５、凶２０３：２０〜５
０、Ｙｂ２０３：２〜３うＴａ２０５十Ｗ０３：６〜５
０（ただしＴａ２０５：０〜２ふＷ０３：０〜５０）、
ＡＩ２０３：０〜５、Ｃｅ０２：０〜１２、Ｇｑ０３十
Ｙ２０３：０〜２５、Ｔｉ０２：０〜１０、Ｚ【）２：
０〜８、Ｎｂ２０５：０〜１０ １ｎ２０３三 ０〜８
、Ｂｉ２０３：０〜８、Ｚｎ○：０〜１以 Ｐｂｏ：０
〜１０ Ｂａ０十Ｓ＾〕十Ｃａ０十Ｍｇ○：０〜１０な
る組成を有する。That is, the optical glass according to the present invention has B03:2 to B03:2 by weight%.
9.5 Si02:2-10.5, evil203:20-5
0, Yb203:2-3 Ta2050W03:6-5
0 (but Ta205:0-2fuW03:0-50),
AI203:0-5, Ce02:0-12, Gq030Y203:0-25, Ti02:0-10, Z[)2:
0-8, Nb205: 0-10 1n2033 0-8
, Bi203: 0-8, Zn○: 0-1 or more Pbo: 0
~10Ba01S^]10Ca01Mg○: It has a composition of 0 to 10.
次に各成分の限定理由を述べると、＆０３およびＳｉ０
２は夫々９．５％および１０．５％以上では所望の高屈
折率が得られず、夫々２％以下では安定なガラスは得ら
れない。Next, the reasons for limiting each component are as follows: &03 and Si0
If 2 is 9.5% or more and 10.5% or more, a desired high refractive index cannot be obtained, and if each is 2% or less, a stable glass cannot be obtained.
Ｌａ２０３，ＹＱ０３，Ｔａ２０３およびＷ０３は夫々
の範囲を逸脱するとガラスが不安定になるので避けなけ
ればならない。またＮ２０３，Ｇｅ０２，Ｇｄ２０３，
Ｙ２０３，Ｔｉ０２，Ｚｈ〕２，ＮＱ０５，１〜０３，
Ｂｉ０３，Ｚｎ０，Ｐｂ０，欧０，Ｓの，Ｃａｏ，Ｍ蚊
は、王として耐失透性の改善、光学恒数の調整、溶融性
の改善等の目的で添加するが、夫々の範囲を越えると、
ガラスが不安定になったり、着色が強くなったり、ある
いは熔融が困難になったりするので望ましくない。La203, YQ03, Ta203, and W03 must be avoided because the glass becomes unstable if they deviate from their respective ranges. Also N203, Ge02, Gd203,
Y203, Ti02, Zh]2, NQ05, 1~03,
Bi03, Zn0, Pb0, Europe0, S, Cao, and M are added for the purpose of improving devitrification resistance, adjusting optical constants, improving meltability, etc., but they exceed the respective ranges. and,
This is undesirable because the glass becomes unstable, becomes strongly colored, or becomes difficult to melt.
これら以外にも少量の弗素、アルカリ酸化物、Ａｓ２０
３，ＳＱ０３，Ｓｎ０２等も必要に応じて添加できる。
次に本発明の実施例（成分は重量％）と、その性能を示
す。表１
表１に示す光学ガラスは、棚酸、桂石酸、酸化ランタン
、酸化イッテルビウム、酸化タンタル、酸化タングステ
ン等の原料の混合物を白金るつぼ中で、１３５０〜１５
００ＣＯで熔融し、鷹拝して均質化、泡切れを行った後
、適当な温度で子熱した金型に鋳込み、徐冷することに
よって得られる。In addition to these, small amounts of fluorine, alkali oxides, As20
3, SQ03, Sn02, etc. can also be added as necessary.
Next, examples of the present invention (components are weight %) and their performance will be shown. Table 1 The optical glass shown in Table 1 is made by heating a mixture of raw materials such as shelf acid, calcic acid, lanthanum oxide, ytterbium oxide, tantalum oxide, and tungsten oxide in a platinum crucible to a temperature of 1350 to 15
It is obtained by melting with 00CO, homogenizing it and removing bubbles, and then casting it into a mold heated at an appropriate temperature and slowly cooling it.
第１図はＢ２０３−Ｓｉ０２−Ｌａ２０３−Ｙｂ２０３
−Ｔａ２０５系のＢ２０３＝７重量％、Ｓｉ０２＝７重
量％におけるガラス化領域を、第２図はＢ０３−Ｓｉ０
２−仏２０３−ＹＱ０３一Ｗ０３系のＢ２０３＝３重量
％、Ｓｉ０２＝３重且０におけるガラス化領域を夫々示
す。
第１図
第２図Figure 1 shows B203-Si02-La203-Yb203
- Figure 2 shows the vitrification region of B203 = 7% by weight and Si02 = 7% by weight in the Ta205 system.
The vitrification regions of B203=3 weight %, Si02=3 layers and 0 of the 2-French 203-YQ03-W03 system are shown, respectively. Figure 1 Figure 2
Claims (1)
０〜１０ ＺｒＯ＿２ ０〜８ Ｎｂ＿２Ｏ＿５ ０〜１０ Ｉｎ＿２Ｏ＿３ ０〜８ Ｂｉ＿２Ｏ＿３ ０〜８ ＺｎＯ ０〜１０ ＰｂＯ ０〜１０ ＢａＯ＋ＳｒＯ＋ＣａＯ＋ＭｇＯ ０〜１０なる組成を
有する光学ガラス。[Claims] In 1% by weight, B_2O_3 2-9.5 SiO_2 2-10.5 La_2O_3 20-50 Yb_2O_3 2-35 Ta_2O_5+WO_3 6-50 However, Ta2O_5 0-25 WO_3 0-50 Al_2O_3 0-5 GeO_2 0~ 12 Gd_2O_3+Y_2O_3 0~25TiO_2
Optical glass having the following composition: 0-10 ZrO_2 0-8 Nb_2O_5 0-10 In_2O_3 0-8 Bi_2O_3 0-8 ZnO 0-10 PbO 0-10 BaO+SrO+CaO+MgO 0-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11401180A JPS6022656B2 (en) | 1980-08-21 | 1980-08-21 | optical glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11401180A JPS6022656B2 (en) | 1980-08-21 | 1980-08-21 | optical glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5738342A JPS5738342A (en) | 1982-03-03 |
| JPS6022656B2 true JPS6022656B2 (en) | 1985-06-03 |
Family
ID=14626809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11401180A Expired JPS6022656B2 (en) | 1980-08-21 | 1980-08-21 | optical glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6022656B2 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6058446A (en) * | 1983-09-09 | 1985-04-04 | Mitsui Petrochem Ind Ltd | Polypropylene composition containing inorganic filler |
| DE3343418A1 (en) * | 1983-12-01 | 1985-06-20 | Schott Glaswerke, 6500 Mainz | OPTICAL GLASS WITH REFRACTION VALUES> = 1.90, PAYBACK> = 25 AND WITH HIGH CHEMICAL RESISTANCE |
| JP3750984B2 (en) | 2000-05-31 | 2006-03-01 | Ｈｏｙａ株式会社 | Optical glass and optical product manufacturing method |
| US20040259713A1 (en) | 2003-06-11 | 2004-12-23 | 3M Innovative Properties Company | Microspheres comprising titania and bismuth oxide |
| JP4726666B2 (en) * | 2006-03-22 | 2011-07-20 | Ｈｏｙａ株式会社 | Optical glass, optical element and manufacturing method thereof |
| JP5078272B2 (en) * | 2006-03-31 | 2012-11-21 | 株式会社オハラ | Optical glass |
| JP5336035B2 (en) | 2006-06-21 | 2013-11-06 | Ｈｏｙａ株式会社 | OPTICAL GLASS, GLASS MOLDED ARTICLE, OPTICAL ELEMENT AND METHOD FOR PRODUCING THEM |
| JP5671776B2 (en) * | 2008-02-26 | 2015-02-18 | 日本電気硝子株式会社 | Optical glass |
| WO2010071144A1 (en) * | 2008-12-16 | 2010-06-24 | 日本板硝子株式会社 | Glass |
| WO2011065097A1 (en) * | 2009-11-26 | 2011-06-03 | コニカミノルタオプト株式会社 | Optical glass and optical element |
| CN107879621A (en) * | 2011-01-18 | 2018-04-06 | 株式会社小原 | Optical glass, preform and optical element |
| JP2012229148A (en) * | 2011-04-27 | 2012-11-22 | Ohara Inc | Optical glass and optical element |
| JP5596717B2 (en) * | 2012-01-30 | 2014-09-24 | 株式会社オハラ | Optical glass |
| CN102674691B (en) * | 2012-05-08 | 2015-01-07 | 湖北新华光信息材料有限公司 | Optical glass |
| JP7491310B2 (en) * | 2019-06-06 | 2024-05-28 | 株式会社ニコン | Optical glass, optical elements, optical systems, interchangeable lenses and optical devices |
-
1980
- 1980-08-21 JP JP11401180A patent/JPS6022656B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5738342A (en) | 1982-03-03 |
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