JPS6287432A - Optical glass - Google Patents
Optical glassInfo
- Publication number
- JPS6287432A JPS6287432A JP22573185A JP22573185A JPS6287432A JP S6287432 A JPS6287432 A JP S6287432A JP 22573185 A JP22573185 A JP 22573185A JP 22573185 A JP22573185 A JP 22573185A JP S6287432 A JPS6287432 A JP S6287432A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- optical glass
- pbo
- temperature
- nb2o5
- 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 12
- 230000005484 gravity Effects 0.000 claims abstract description 5
- 230000036314 physical performance Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 14
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 abstract description 14
- 238000000465 moulding Methods 0.000 abstract description 8
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 abstract description 7
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-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
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract description 6
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 abstract description 6
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 abstract description 6
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 abstract description 5
- YEXPOXQUZXUXJW-UHFFFAOYSA-N lead(II) oxide Inorganic materials [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052681 coesite Inorganic materials 0.000 abstract description 3
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 3
- 238000004031 devitrification Methods 0.000 abstract description 3
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 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
- 229910052905 tridymite Inorganic materials 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 230000000704 physical effect Effects 0.000 abstract description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 3
- NOTVAPJNGZMVSD-UHFFFAOYSA-N potassium monoxide Inorganic materials [K]O[K] NOTVAPJNGZMVSD-UHFFFAOYSA-N 0.000 abstract 3
- 229910011255 B2O3 Inorganic materials 0.000 abstract 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- GOLCXWYRSKYTSP-UHFFFAOYSA-N Arsenious Acid Chemical compound O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 2
- 244000046052 Phaseolus vulgaris Species 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- -1 for example Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000007517 polishing process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 description 1
- 241000723346 Cinnamomum camphora Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 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
- 229960000846 camphor Drugs 0.000 description 1
- 229930008380 camphor Natural products 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007572 expansion measurement Methods 0.000 description 1
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910001845 yogo sapphire 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
- C03C3/07—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
Abstract
Description
【発明の詳細な説明】
本発明は屈伏温度（Ａ ｔ ’）が５７０℃以下、屈折
率（ｎｄ）が１．６９０ 〜１，７２５、比重が４．０
以下の物理的性能を持ち、比較的低温（６２０℃以下）
での１角密プレスをし、球面及び非球面を持ち研摩工程
を必要としない光学素子を作成することを目的とした光
学ガラスに関するものである。Detailed Description of the Invention The present invention has a yield temperature (A t ') of 570°C or less, a refractive index (nd) of 1.690 to 1,725, and a specific gravity of 4.0.
It has the following physical properties and is relatively low temperature (below 620℃)
The present invention relates to an optical glass that is produced by one-sided dense pressing in a 1-sided press to produce optical elements that have spherical and aspherical surfaces and do not require a polishing process.
近年プレス成形後、研摩工程無しに直ちにレンズ、プリ
ズム等として使用するためのマ＾密プレス技術の研究−
開発かさかんにおこなわれている。その開発の中心は、
成形型の材質とその高い面精度の保持であり、種々の材
質の成形型が実躾され親告されている。面積度を保持す
るために、例えば酸化防止のために特開昭５２−４５６
１３、特公昭５４−：Ｅ１８４６においては窒素雰囲気
、特公昭５４−３８１２６は窒素中水素雰囲気、特開昭
５９−１２０４２５は真空士窒素等不活性カス、特開昭
５９−１１６１３６は高真空といったように、雰囲気の
調整を必要とするなどの工夫かなされている。当然のこ
とながら成形型の酸化防止及び面積度保持の観点から考
えれば、出来るかぎり低い温度に成形型を保持すること
か望ましい。そのためには、精密プレス成形されるガラ
スは、低い温度でプレス成形されることか要求され、一
方ガラスの成形温度はそのカラスの線膨張測定における
屈伏温度（Ａｔ）を参考にして５夫められる。In recent years, research has been carried out on compact press technology for use as lenses, prisms, etc. immediately after press molding without a polishing process.
Development is ongoing. The center of its development is
Regarding the material of the mold and the maintenance of its high surface accuracy, molds made of various materials have been tested and reported. In order to maintain the degree of area, for example, to prevent oxidation, JP-A-52-456
13. Japanese Patent Publication No. 54-1986: Nitrogen atmosphere in E1846, hydrogen atmosphere in nitrogen in Japanese Patent Publication No. 54-38126, inert gas such as vacuum engineer nitrogen in Japanese Patent Publication No. 59-120425, and high vacuum in Japanese Patent Publication No. 59-116136. However, some measures have been taken to make adjustments to the atmosphere. Naturally, from the viewpoint of preventing oxidation of the mold and maintaining the surface area, it is desirable to maintain the mold at the lowest possible temperature. To this end, precision press-molded glass is required to be press-molded at a low temperature, and the molding temperature of the glass is determined by referring to the yielding temperature (At) in linear expansion measurements of the glass. .
しかし、従来よりある光学カラスでは、例えば餡を多量
に含む光学ガラスにおいて、５７０℃以下の屈伏温度（
Ａｔ ）を持ち高屈折率ではあるが比重が大きいか、プ
レス成形温度でのガラスの安定性か悪い。鉛を少鳳含む
か、又は餡を含まない光学カラスで高屈折率のものは、
そのほとんどか屈伏温度（Ａｔ）か６５０℃前後、もし
くはそれ以上のものしか存在していない。However, in conventional optical glass, for example, optical glass containing a large amount of bean paste has a yield temperature of 570°C or less (
Although it has a high refractive index, it has a high specific gravity or the stability of the glass at the press molding temperature is poor. Optical glass with a high refractive index that contains a small amount of lead or no bean paste is
Most of them exist only with a yield temperature (At) of around 650°C or higher.
それらの実例を示すと、２１１ｒ＋表の通りである。Examples of these are shown in the 211r+ table.
１１表
本発明は、上記のことを考慮し、レーザ光学用素子（例
えばコンパクトディスク用等）として設計上必要とされ
る、上記物理的性能を持つ光学ガラスの開発に本発明者
等が鋭意研究した結果、５ｉ０２−Ｂ２０３−Ｌｉ２０
基礎系に、ＴｉＯ２、Ｎｂ２Ｏ５、ＰｂＯを二ｆ１以上
含有さｆ、さらに他の成分を必要に応じて添加すること
により、プレス成形温度で安定である所記の目的を達成
することを見いだしたものである。Table 11 In consideration of the above, the present inventors have conducted intensive research to develop an optical glass that has the above-mentioned physical performance, which is required for design as a laser optical element (for example, for compact discs, etc.). As a result, 5i02-B203-Li20
It has been discovered that by containing TiO2, Nb2O5, and PbO at least 2f1 in the basic system, and further adding other components as necessary, the stated purpose of being stable at press molding temperatures can be achieved. It is.
すなわち本発明は
５１０２ ２３ 〜３４ 重量％
Ｂ２Ｏ３５〜 １１ 重１％
ＴｉＯ２、Ｎｂ２Ｏ５、ＰｂＯの二ｆ１以上２５ 〜
５０ １ｉ量％
ただし
ＴｉＯ２０〜 ２０ 重量％
Ｎｂ２Ｏ５０〜 １４ １ｉ量％
ｐｂｏ ｏ 〜 ４５ 重１％ＬＩ２０、
Ｎａ２Ｏ，Ｋ２Ｏの二種以上９ 〜 １８ 重量％
ただし
Ｌｉ２Ｏ０，５〜 ５ ｌｉｔ％Ｎａ２Ｏ０〜Ｑ
ＩＩ量％
Ｋ２Ｏ ０ 〜ＩＩ ｌｉ量％ＢａＯＤ
〜１２ 重量％
ＺｎＯ０〜 ８ 重量％
ＧｅＯ２０〜３ 重量％
ＺｒＯ２０〜 ３ 重量％
からなる組成を有している。That is, the present invention contains 2f1 or more of 5102 23 to 34% by weight B2O35 to 11 1% by weight TiO2, Nb2O5, PbO25 to
50 1i amount % However, TiO20 ~ 20 weight % Nb2O50 ~ 14 1i amount % pbo o ~ 45 weight 1% LI20,
Two or more types of Na2O, K2O 9 to 18% by weight However, Li2O0.5 to 5 lit% Na2O0 to Q
II amount % K2O 0 ~ II li amount %BaOD
It has a composition consisting of ~12% by weight, ZnO0~8% by weight, GeO20~3% by weight, and ZrO20~3% by weight.
ここにおいて８配合成分を上記のように限定した理由は
次の通りである。The reason why the eight ingredients were limited as described above is as follows.
本発明に閃するＳｉＯ２はカラスの網目を構成する主成
分であるが、２３Ｉｉ量％より少ないと失透傾向が大き
くなり、３４Ｉｉｊ１％より多くなると、ｍ継時の粘性
が大きくなるはかりでなく、屈伏温度（Ａｔ ）の上昇
をまねく。SiO2, which is inspired by the present invention, is the main component constituting the glass network, but if the amount is less than 23Ii, there is a tendency to devitrify, and if it is more than 1%, the viscosity at the time of m-joint increases. This leads to an increase in yield temperature (At).
Ｂ２Ｏ３は、５ｉ０２と同樟カラスの網目を槙成し、ガ
ラスの安定化に有効な成分である。B2O3 forms the same camphor mesh as 5i02 and is an effective component for stabilizing the glass.
またガラスの均質化に有効であり、さらに適量含有させ
ることにより屈伏温度（Ａｔ ）を下げる。しかし、５
１１量％より少ないと上記の効果か少なく、ｌ１ｉｉ量
％より多くなると化学的耐久性か悪くなる。It is also effective in homogenizing glass, and furthermore, by containing it in an appropriate amount, it lowers the yielding temperature (At). However, 5
If it is less than 11% by weight, the above effect will be less, and if it is more than 11% by weight, the chemical durability will be poor.
ＴｉＯ２、Ｎｂ２Ｏ５及びＰｂＯは、プレスれ屈折率を
高める効果があり、二種以上をうまく組み合せることに
より、所期の目的を有するガラスか得られるが、ＴｉＯ
２、Ｎｂ２Ｏ５及びＰｂＯの二種以上の合量が２５重量
％より少なく５０１１％より多いと、目的とする屈折率
は得られない。また各成分がそれぞれＴｉＯ２が２０１
ｉ量％、Ｎｂ２ｏ５か１４重１％、にり多いと屈伏温度
（Ａｔ）の上昇をまねき、ＰｂＯが４５重量％より多く
なると、プレス成形時において鉛の揮発により、面１＾
度の保持が困畦となるはかりか、比重を重くする。TiO2, Nb2O5, and PbO have the effect of increasing the press shear refractive index, and by skillfully combining two or more of them, a glass with the desired purpose can be obtained.
2. If the total amount of two or more of Nb2O5 and PbO is less than 25% by weight and more than 5011%, the desired refractive index cannot be obtained. In addition, each component has 201 TiO2
i amount%, Nb2o5 or 14 weight 1%, if there is too much glue, the yielding temperature (At) will increase, and if PbO is more than 45 weight%, the surface 1^ will be damaged due to the volatilization of lead during press forming.
Either the scale is difficult to maintain, or the specific weight is heavy.
Ｌｉ２Ｏは、本発明において！！要な意味をもつ成分で
あり、Ｌｉ２Ｏを必須配合成分として適量加えることに
より、ガラスの安定性を損なうことなく、著しくプレス
成形時の温度を下げる効果を持つ。Ｌｉ２Ｏが０．５１
量％より少ないと上記効果か少なく、５Ｍ！１％より多
いと失速傾向の増大をまねく。Li2O is used in the present invention! ! It is a component with important meaning, and by adding an appropriate amount of Li2O as an essential compounding component, it has the effect of significantly lowering the temperature during press molding without impairing the stability of the glass. Li2O is 0.51
If it is less than the amount%, the above effect will be less, 5M! If it is more than 1%, the tendency to stall increases.
Ｎａ２Ｏ，Ｋ２Ｏもそれぞれプレス成形時の温度降下に
寄与するが、Ｎａ２Ｏが９１１％、Ｋ２Ｏか１０１１１
％より多いと失透傾向が増大するばかりでなく、化学的
耐久性も悪くなる。Na2O and K2O each contribute to the temperature drop during press forming, but Na2O is 911%, K2O is 1011%
%, not only does the devitrification tendency increase, but also the chemical durability deteriorates.
（ｊ２０、Ｎａ２Ｏ及びＫ２Ｏの二種以上の合量か９１
１量％より少ないと、プレス成形時の温度上昇となり、
１８１１量％より多いと、化学的耐久性が悪くなるとと
もに失透傾向も大となる。(j20, total amount of two or more types of Na2O and K2O or 91
If it is less than 1% by weight, the temperature will increase during press molding,
When the amount is more than 1811% by weight, chemical durability deteriorates and the tendency for devitrification increases.
Ｂａｄ、ＺｎＯはそれぞれ任意配合成分であり、ＢａＯ
はカラスの安定化に寄与するが、１２重量％より多くな
ると失速傾向が増大する。Bad and ZnO are optional ingredients, and BaO
contributes to stabilizing the crow, but if it exceeds 12% by weight, the tendency to stall increases.
ＺｎＯは化学的ｉｔ久性を良くし、プレス成形温度を下
げるのに良好であるか、８１１量％を越えると失速傾向
が大となる。ZnO is good for improving chemical durability and lowering the press forming temperature, but if it exceeds 811% by weight, there is a strong tendency to stall.
ＧｅＯ２は任意成分であり、ガラスの安定化に寄与する
かその効果は、３！ｉ量％までで充分である。GeO2 is an optional component, and whether it contributes to stabilizing the glass or its effect is 3! Up to i amount% is sufficient.
ＺｒＯ２は任意成分であり、屈折率を高めガラスの化学
的耐久性を高めるか、３重量％より多くなるとガラスの
失透傾向が増大し、さらにプレス成形温度の上昇をもた
らす。ZrO2 is an optional component, and either increases the refractive index and chemical durability of the glass, or if it exceeds 3% by weight, the tendency of the glass to devitrify increases, further raising the press molding temperature.
なお、製造の都合上、ＭｇＯ，Ｃａ○等アルカリ土顕、
Ｌａ２Ｏ３、Ｇｄ２Ｏ３等積土顕、Ａｌ２Ｏ３、Ｔａ２
０５等一般の光学ガラスに用いられる成分の数重量％含
むことによっても本発明は実施される。For manufacturing reasons, alkaline soils such as MgO, Ca○, etc.
La2O3, Gd2O3, etc., Al2O3, Ta2
The present invention can also be carried out by containing several weight percent of components used in general optical glasses such as 05.
本発明による実施例を後記の第２表に示す。Examples according to the present invention are shown in Table 2 below.
本発明の光学ガラスは１２表の比率でガラス原料を混合
した後、バッチを白金製ルツボに投入して電気炉で１０
００〜１２００℃で熔融し、白金製撹拌棒にて攪拌して
、清潔し均質化してから適当な温度に予熱した金型内に
鋳込んだ後、徐冷して作る。このように本発明の、ガラ
スは屈伏温度（Ａｔ）において５７０℃以下で、１゜６
９０〜１．７２５の高い屈折率、４．０以下の比重を有
し、失速に対して安定で、工難的規横において良好に製
造できるものである。The optical glass of the present invention is produced by mixing glass raw materials in the ratio shown in Table 12, and then putting the batch into a platinum crucible and heating it in an electric furnace for 10 minutes.
It is melted at 00 to 1200°C, stirred with a platinum stirring rod, cleaned and homogenized, then cast into a mold preheated to an appropriate temperature, and then slowly cooled. As described above, the glass of the present invention has a yield temperature (At) of 1°6 below 570°C.
It has a high refractive index of 90 to 1.725, a specific gravity of 4.0 or less, is stable against stalling, and can be manufactured satisfactorily under difficult conditions.
また本発明のカラスは一般の光学カラスとして使用して
なんら差し支えない。なおりラスの着色を防ぎ、脱泡の
ために吏員のＡｓ２Ｏ３を加えること、又は工菜上良く
知られている脱泡成分の少量添加は、本発明の効果に影
響を与えない。Further, the crow of the present invention may be used as a general optical crow without any problem. The effect of the present invention is not affected by the addition of As2O3 to prevent coloring of the lath and to defoam, or by adding a small amount of a defoaming component well known in the field of engineering.
Claims (1)
５０重量％ ただし ＴｉＯ＿２ ０〜２０重量％ Ｎｂ＿２Ｏ＿５ ０〜１４重量％ ＰｂＯ ０〜４５重量％ Ｌｉ＿２Ｏ、Ｎａ＿２Ｏ、Ｋ＿２Ｏの二種以上９〜１８
重量％ ただし Ｌｉ＿２Ｏ ０．５〜５重量％ Ｎａ＿２Ｏ ０〜９重量％ Ｋ＿２Ｏ ０〜１１重量％ ＢａＯ ０〜１２重量％ ＺｎＯ ０〜８重量％ ＧｅＯ＿２ ０〜３重量％ ＺｒＯ＿２ ０〜３重量％ 以上から成る屈伏温度（Ａｔ）が５７０℃以下で、屈折
率（ｎｄ）が１．６９０〜１．７ ２５であり、４．０以下の比重の物理的性能を持つ、比
較的低温（６２０℃以下）にて精密プレスすることを目
的とした光学ガラス[Claims] SiO_2 23-34% by weight B_2O_3 5-11% by weight Two or more of TiO_2, Nb_2O_5, PbO 25-
50% by weight, however, TiO_2 0-20% by weight Nb_2O_5 0-14% by weight PbO 0-45% by weight Two or more of Li_2O, Na_2O, K_2O 9-18
Weight% Consisting of Li_2O 0.5-5% by weight, Na_2O 0-9% by weight, K_2O 0-11% by weight, BaO 0-12% by weight, ZnO 0-8% by weight, GeO_2 0-3% by weight, ZrO_2 0-3% by weight or more. At relatively low temperatures (620°C or less), the yield temperature (At) is 570°C or less, the refractive index (nd) is 1.690 to 1.725, and the physical performance of the specific gravity is 4.0 or less. Optical glass intended for precision pressing
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60225731A JPH0617246B2 (en) | 1985-10-09 | 1985-10-09 | Optical glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60225731A JPH0617246B2 (en) | 1985-10-09 | 1985-10-09 | Optical glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6287432A true JPS6287432A (en) | 1987-04-21 |
| JPH0617246B2 JPH0617246B2 (en) | 1994-03-09 |
Family
ID=16833939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60225731A Expired - Lifetime JPH0617246B2 (en) | 1985-10-09 | 1985-10-09 | Optical glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0617246B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01308843A (en) * | 1988-02-26 | 1989-12-13 | Ohara Inc | Optical glass |
| JPH06107425A (en) * | 1991-04-05 | 1994-04-19 | Ohara Inc | Optical glass |
| US6465105B1 (en) | 1999-08-02 | 2002-10-15 | Hoya Corporation | WDM optical filter and glass substrate for use in the WDM optical filter |
| JP2003054983A (en) * | 2001-06-06 | 2003-02-26 | Ohara Inc | Optical glass |
| EP1308424A1 (en) * | 2001-10-15 | 2003-05-07 | Hoya Corporation | Optical glass, glass material for press molding, optical element, and method of manufacturing same |
| JP2005139023A (en) * | 2003-11-06 | 2005-06-02 | Nippon Electric Glass Co Ltd | Optical glass for mold press molding |
| CN102674685A (en) * | 2012-04-23 | 2012-09-19 | 湖北新华光信息材料有限公司 | Optical glass |
| WO2019151316A1 (en) * | 2018-01-31 | 2019-08-08 | Ａｇｃ株式会社 | Optical glass and optical component |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6096542A (en) * | 1983-10-27 | 1985-05-30 | Hoya Corp | Glass for multi-focus eyeglass lens |
-
1985
- 1985-10-09 JP JP60225731A patent/JPH0617246B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6096542A (en) * | 1983-10-27 | 1985-05-30 | Hoya Corp | Glass for multi-focus eyeglass lens |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01308843A (en) * | 1988-02-26 | 1989-12-13 | Ohara Inc | Optical glass |
| JPH06107425A (en) * | 1991-04-05 | 1994-04-19 | Ohara Inc | Optical glass |
| US6465105B1 (en) | 1999-08-02 | 2002-10-15 | Hoya Corporation | WDM optical filter and glass substrate for use in the WDM optical filter |
| JP2004182598A (en) * | 1999-08-02 | 2004-07-02 | Hoya Corp | Glass base for wdm optical filter, wdm optical filter, optical multiplexer/demultiplexer for wdm and method for manufacturing glass for base |
| JP2003054983A (en) * | 2001-06-06 | 2003-02-26 | Ohara Inc | Optical glass |
| US8479539B2 (en) | 2001-10-15 | 2013-07-09 | Hoya Corporation | Optical glass, glass material for press molding, optical element, and method of manufacturing same |
| EP1308424A1 (en) * | 2001-10-15 | 2003-05-07 | Hoya Corporation | Optical glass, glass material for press molding, optical element, and method of manufacturing same |
| US7015164B2 (en) | 2001-10-15 | 2006-03-21 | Hoya Corporation | Optical glass, glass material for press molding, optical element, and method of manufacturing same |
| KR100873548B1 (en) * | 2001-10-15 | 2008-12-11 | 호야 가부시키가이샤 | Optical glass, glass material for press molding, optical element, and method of manufacturing same |
| JP2005139023A (en) * | 2003-11-06 | 2005-06-02 | Nippon Electric Glass Co Ltd | Optical glass for mold press molding |
| JP4496763B2 (en) * | 2003-11-06 | 2010-07-07 | 日本電気硝子株式会社 | Optical glass for mold press molding |
| CN102674685A (en) * | 2012-04-23 | 2012-09-19 | 湖北新华光信息材料有限公司 | Optical glass |
| WO2019151316A1 (en) * | 2018-01-31 | 2019-08-08 | Ａｇｃ株式会社 | Optical glass and optical component |
| JPWO2019151316A1 (en) * | 2018-01-31 | 2021-01-28 | Ａｇｃ株式会社 | Optical glass and optics |
| EP3747840A4 (en) * | 2018-01-31 | 2021-11-03 | Agc Inc. | Optical glass and optical component |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0617246B2 (en) | 1994-03-09 |
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