JPS605028A - Production of fluorine-containing optical glass - Google Patents
Production of fluorine-containing optical glassInfo
- Publication number
- JPS605028A JPS605028A JP58110389A JP11038983A JPS605028A JP S605028 A JPS605028 A JP S605028A JP 58110389 A JP58110389 A JP 58110389A JP 11038983 A JP11038983 A JP 11038983A JP S605028 A JPS605028 A JP S605028A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- fluorine
- soot
- optical glass
- containing 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.)
- Pending
Links
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 19
- 239000011737 fluorine Substances 0.000 title claims abstract description 18
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 239000005304 optical glass Substances 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000011521 glass Substances 0.000 claims abstract description 22
- 239000004071 soot Substances 0.000 claims abstract description 12
- 239000010453 quartz Substances 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000010574 gas phase reaction Methods 0.000 claims description 3
- 239000002019 doping agent Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 230000007062 hydrolysis Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 125000001153 fluoro group Chemical group F* 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 239000012808 vapor phase Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 9
- 238000004017 vitrification Methods 0.000 description 4
- 239000012159 carrier gas Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/14—Other methods of shaping glass by gas- or vapour- phase reaction processes
- C03B19/1453—Thermal after-treatment of the shaped article, e.g. dehydrating, consolidating, sintering
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/06—Doped silica-based glasses
- C03B2201/08—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant
- C03B2201/12—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant doped with fluorine
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/06—Doped silica-based glasses
- C03B2201/08—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant
- C03B2201/14—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant doped with boron and fluorine
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/06—Doped silica-based glasses
- C03B2201/20—Doped silica-based glasses doped with non-metals other than boron or fluorine
- C03B2201/28—Doped silica-based glasses doped with non-metals other than boron or fluorine doped with phosphorus
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Glass Melting And Manufacturing (AREA)
- Glass Compositions (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
Description
【発明の詳細な説明】
（発明の技術分野）
本発明はレンズや光ファイバー等の光学材料に使用する
弗素含有光学ガラスの製法に関する。DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a method for producing fluorine-containing optical glass used for optical materials such as lenses and optical fibers.
（発明の技術的背景）
石英を主成分とする光学ガラスの製法として、酸化反応
あるいは加水分解反応により高純度のＳ ｉ ０１のス
ートを堆積させ、これをガラス化することが行なわれて
いる。(Technical Background of the Invention) As a method for producing optical glass containing quartz as a main component, a highly purified Si 01 soot is deposited by an oxidation reaction or a hydrolysis reaction, and this is vitrified.
こうして得られる光学ガラスの屈折率を所望の値にする
ためには、上記反応の際Ｇ ｅ ｒ Ｐ ｙ Ｂ ＋Ｔ
ｉ等のドープ剤を同時に酸化物として堆積させる。In order to make the refractive index of the optical glass obtained in this way a desired value, G e r P y B + T
A dopant such as i is simultaneously deposited as an oxide.
屈折率゛を上昇させるドープ剤よりも低下させるドープ
剤の方が少なく、これは酸化物としては存在しないが、
Ｆを用いることが検討されている。There are fewer dopants that lower the refractive index than increase them, and these dopants do not exist as oxides, but
The use of F is being considered.
これは、特公昭５５−１５６８２号公報、同じ＜５８−
１０５１号公報、あるいは特開昭５７−５１１４６号公
報等に記載されている。 ′。This is published in Japanese Patent Publication No. 55-15682, the same <58-
It is described in Japanese Patent Application Laid-open No. 1051, Japanese Patent Application Laid-open No. 57-51146, and the like. '.
（背景技術の問題点）
ところが、このような従来の方法を用いて弗素含有ガラ
スの製造を行なう場合、弗素が酸化物とならないのでガ
ラス中に取り込まれる量の制御ガ非常に難しい。(Problems with Background Art) However, when producing fluorine-containing glass using such conventional methods, it is very difficult to control the amount incorporated into the glass because fluorine does not become an oxide.
従って、気相反応時の原料ガス濃度、反応温度等きわめ
て厳密な管理を必要としていた。Therefore, extremely strict control of the raw material gas concentration, reaction temperature, etc. during the gas phase reaction was required.
（発明の目的）
本発明は以上の点に着目してなされたもので、高速かつ
安価に弗素含有光学ガラスを製造する方法を提供するも
のである。(Objective of the Invention) The present invention has been made with attention to the above points, and it is an object of the present invention to provide a method for manufacturing fluorine-containing optical glass at high speed and at low cost.
（発明の概要）
本発明は即ち、気相反応により得られた石英を主成分と
するガラススートを、弗素含有ガス雰囲気中でガラス化
することを特徴とする即素含有光学ガ２スの製法に関す
るものである。(Summary of the Invention) The present invention is a method for producing a fluorine-containing optical gas, which is characterized by vitrifying a glass soot containing quartz as a main component obtained by a gas phase reaction in a fluorine-containing gas atmosphere. It is related to.
（発明の実施例）
本発明において、準備するガラススートは酸化反応ある
いは加水分解反応により高純度のＳ ：Ｏ。(Embodiments of the Invention) In the present invention, the glass soot to be prepared is made into highly pure S:O by an oxidation reaction or a hydrolysis reaction.
を製造する公知の方法によって得られる。その反応式は
例えば下記のとおりである。Obtained by a known method for producing. For example, the reaction formula is as follows.
Ｓ ｊ ＯＩ４ ＋０２→ ８ｉ０２＋２０１ｚ８ ｉ
０１４ ＋２Ｈｚ±０．→８１ Ｃｈ ＋ ４ ＨＯ
ｌこの反応はプラズマあるいは酸水素バーナーによる高
温雰囲気で行なわれることはいうまでもない。S j OI4 +02→ 8i02+201z8 i
014 +2Hz±0. →81 Ch + 4 HO
It goes without saying that this reaction is carried out in a high temperature atmosphere using plasma or an oxyhydrogen burner.
また、このようなＳ ｉ Ｏ！のスート中に下記のよう
な反応により得られたドープ剤が含まれていてもよい。Also, such S i O! The soot may contain a dopant obtained by the following reaction.
これらのドープ剤は一般にガラスの加工性を良くするた
めに所定量混入される。These dopants are generally mixed in a predetermined amount in order to improve the processability of the glass.
４ＰＯノｓ ＋５０ｚ→ ２ Ｆ２ ０Ｂ ＋６０ Ｉ
２２ＰＯＯノ、 ＋３Ｈ，Ｏ→ ２Ｆ、０．＋３ＨＯ１
４ＢＯＪ寥＋３０．→ ２Ｂ２０３＋６０！。4PO nos +50z→ 2 F2 0B +60 I
22POO, +3H,O→ 2F, 0. +3HO1
4BOJ +30. → 2B203+60! .
次に、こう−して得られたガラススートを充実したガラ
スにするためにガラスの溶融温度に加熱していわゆるガ
ラス化処理を行なう。この温度は約１４００℃から１７
００℃程度である。ＢＪｐＰがドープ剤として入ってい
るとガラス化湿度はさらに低くなる。Next, the glass soot thus obtained is heated to a glass melting temperature to undergo a so-called vitrification treatment in order to form a solid glass. This temperature ranges from about 1400℃ to 17
It is about 00℃. When BJpP is included as a dopant, the vitrification humidity becomes even lower.
本発明においてはこのガラス化処理のとき、スートを弗
素含有ガス雰囲気中に置く。In the present invention, during this vitrification treatment, the soot is placed in a fluorine-containing gas atmosphere.
弗素含有ガスとしては、８ Ｆ ６ ｐ ＯＦ ４ ＋
０ｔＦａ＋０ｓＦｓ等各種の弗素含有ガスを使用するこ
と′ができる。また、例えば０□やＨｅをキャリアガス
として用いることができる。なお０２を用いるとＦのと
り込み量が増大する効果もあるＯ〔実施例〕
セラミックるつぼ中に５ｉ０２を加水分解法にヨッテ堆
積すセ、ここへＨｅ １０１ ／ｍｉｎ １０゜１１
／ ｍｉｎのキャリアガスと共にＯＦ ４を流して１６
００℃でガラス化を行なった。As a fluorine-containing gas, 8F 6 p OF 4 +
Various fluorine-containing gases such as 0tFa+0sFs can be used. Further, for example, 0□ or He can be used as a carrier gas. Note that using 02 also has the effect of increasing the amount of F taken in. [Example] When 5i02 is deposited in a ceramic crucible using a hydrolysis method, here is He 101 /min 10°11
Flowing OF 4 with carrier gas of 16/min
Vitrification was carried out at 00°C.
ＯＦ４の混合量を順次変化させてプロットした結果を第
１図に示す。FIG. 1 shows the plotted results of sequentially changing the amount of OF4 mixed.
第１図の縦軸は、純石英の屈折率よりどれだけ屈折率が
低下したかを示す値である。また０２Ｆ、。The vertical axis in FIG. 1 is a value indicating how much the refractive index is lower than that of pure quartz. Also 02F.
ＳＦ、を使用した場合のデータも並記した。Data when using SF is also listed.
ここで、屈折率変化量に対するとり込まれたＦの量の関
係を示すグラフを第２図に示す。Here, a graph showing the relationship between the amount of incorporated F and the amount of change in the refractive index is shown in FIG.
第２図によれば屈折率変化量が０．００５の場合、約１
モルパーセント程度のＦがガラス中により込まれたこと
がわかる。According to FIG. 2, when the refractive index change is 0.005, about 1
It can be seen that approximately mol percent of F was incorporated into the glass.
（発明の効果）
以上説明した本発明の製法は次のような作用効果を有し
ている。(Effects of the Invention) The manufacturing method of the present invention described above has the following effects.
１）スート作成時にドープ剤のｉの調整等が不要である
から、ガス７０−コントロールが容易である。1) Gas 70 can be easily controlled because it is not necessary to adjust i of the dopant during soot preparation.
ｉｉ） Ｊ’含有ガスを流しながらガラス化するのでＦ
をガラス中にとり込むと同時にＦによってガラス中のＯ
Ｈ基との置換が行なわれ、脱水効果によりガラスの水に
よる光学的特性を向上させることができる。ii) Since it vitrifies while flowing J'-containing gas, F
At the same time as the O in the glass is taken into the glass by F,
Substitution with H groups is carried out, and the optical properties of the glass due to water can be improved due to the dehydration effect.
ｉｉ） Ｆを含むスート作成には沿性の高いｓｉＦ。ii) siF is highly flexible for creating suits containing F.
等を扱、うことになるが、本発明の方法では安全性の高
いフレオン系のガス等を使用することができる。However, in the method of the present invention, highly safe Freon gas and the like can be used.
ｉｖ） 上記のように制御が容易であるから、比較的高
速でガラスの製造をすることができる。iv) Since control is easy as described above, glass can be manufactured at relatively high speed.
第１図は本発明の製法により得られたガラスの屈折率変
化を示すグラフで、第２図は屈折率変化量とＦドープ量
との関係を示すグラフである。
火 １ ）刀
ター−１で ２１
尤 ２１辺FIG. 1 is a graph showing the change in refractive index of glass obtained by the manufacturing method of the present invention, and FIG. 2 is a graph showing the relationship between the amount of change in refractive index and the amount of F doping. Fire 1) Sword tar-1 with 21 sides
Claims (1)
トを、弗素含有ガス雰囲気中でガラス化することを特徴
とする弗素含有光学ガラスの製法。A method for producing fluorine-containing optical glass, which comprises vitrifying a glass soot containing quartz as a main component obtained by a gas phase reaction in a fluorine-containing gas atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58110389A JPS605028A (en) | 1983-06-20 | 1983-06-20 | Production of fluorine-containing optical glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58110389A JPS605028A (en) | 1983-06-20 | 1983-06-20 | Production of fluorine-containing optical glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS605028A true JPS605028A (en) | 1985-01-11 |
Family
ID=14534566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58110389A Pending JPS605028A (en) | 1983-06-20 | 1983-06-20 | Production of fluorine-containing optical glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS605028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01257909A (en) * | 1988-04-08 | 1989-10-16 | Tosoh Corp | Achromatic lens for ultraviolet ray |
-
1983
- 1983-06-20 JP JP58110389A patent/JPS605028A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01257909A (en) * | 1988-04-08 | 1989-10-16 | Tosoh Corp | Achromatic lens for ultraviolet ray |
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