WO2016035463A1 - 光学ガラス、光学ガラスを用いた光学素子、光学装置 - Google Patents
光学ガラス、光学ガラスを用いた光学素子、光学装置 Download PDFInfo
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- WO2016035463A1 WO2016035463A1 PCT/JP2015/070674 JP2015070674W WO2016035463A1 WO 2016035463 A1 WO2016035463 A1 WO 2016035463A1 JP 2015070674 W JP2015070674 W JP 2015070674W WO 2016035463 A1 WO2016035463 A1 WO 2016035463A1
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- glass
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- devitrification
- optical glass
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Classifications
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- 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
- C03C3/12—Silica-free oxide glass compositions
- C03C3/16—Silica-free oxide glass compositions containing phosphorus
- C03C3/19—Silica-free oxide glass compositions containing phosphorus containing boron
-
- 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
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
Definitions
- the present invention relates to an optical glass suitable for mold press molding.
- the present invention claims the priority of Japanese Patent Application No. 2014-181697 filed on September 5, 2014. For designated countries where weaving by reference is allowed, the contents described in the application are as follows: Is incorporated into this application by reference.
- mold press molding is employed in which a glass material (preform) is placed in a mold, heated and softened, and then pressed.
- Patent Document 1 describes optical glass for mold press molding.
- the conventional optical glass contains a large amount of ZnO in order to lower the glass transition temperature, and it cannot be said that the low dispersion important for chromatic aberration correction is sufficient.
- the present invention provides an optical glass suitable for mold press molding.
- the first aspect of the present invention is, by weight percentage, B 2 O 3 : 10 to 25%, P 2 O 5 : 30 to 60%, Al 2 O 3 : 0 to 5%, Li 2 O: 0.1 Contains 10% to 10%, SrO: 0 to 15%, BaO: 10 to 50%, ZnO: 0 to 12%, Y 2 O 3 : 0 to 5%, Gd 2 O 3 : 0 to 5% In addition, the optical glass does not contain La 2 O 3 .
- the second aspect of the present invention is an optical element using the optical glass of the first aspect.
- a third aspect of the present invention is an optical device including the optical element of the second aspect.
- This embodiment has a medium refractive index / low dispersion optical constant in a phosphate glass, a glass transition temperature (Tg) and a liquidus temperature (Tl) suitable for mold press molding, It is an optical glass excellent in devitrification.
- composition range and characteristic range of each component of the glass in the present embodiment are as follows. In the present specification, unless otherwise specified, the content of each component is assumed to be% by weight with respect to the total glass weight of the oxide equivalent composition.
- the oxide-converted composition here means that the oxide, composite salt, etc. used as the raw material of the glass component of the present invention are all decomposed and converted into oxides when melted, and the total of the oxides. It is a composition in which each component contained in the glass is expressed with a weight of 100% by weight.
- B 2 O 3 is an essential component as a glass-forming oxide, has the effect of imparting low dispersibility and increasing the meltability of glass. If it is 10% or less, the desired low dispersibility cannot be obtained, and the meltability of the glass also deteriorates. On the other hand, if it exceeds 25%, the glass transition temperature rises and the dispersion becomes rather large, so the preferred range is 10 to 25%. It is more preferably 10 to 20%, and most preferably 10 to 15%.
- P 2 O 5 is an essential component as a glass-forming oxide, and has an effect of lowering the glass transition temperature and liquidus temperature and imparting low dispersibility. However, if it is less than 30%, it is difficult to obtain a stable glass, and if it is 60% or more, it becomes difficult to obtain a target refractive index. Therefore, the preferred range is 30-60%. It is more preferably 35 to 50%, and most preferably 40 to 47%.
- Al 2 O 3 is an effective component for increasing chemical durability. However, when introduced excessively, not only the meltability and devitrification resistance deteriorate, but also the low dispersibility is impaired. Therefore, the preferred range is 0-5%. It is more preferably 0 to 4%, and most preferably 0 to 3%.
- Li 2 O is an essential component of this embodiment, and is particularly effective for improving the meltability of glass and lowering the glass transition temperature and the liquidus temperature. However, if it exceeds 10%, the devitrification resistance decreases and it becomes difficult to obtain a stable glass. Therefore, the introduction amount is set to 0.1 to 10%. It is more preferably 1 to 8%, and most preferably 2 to 6%.
- MgO and CaO are useful components for adjusting the refractive index. However, if the amount of MgO and CaO introduced is large, the glass transition temperature rises. Therefore, the amount may be 0 to 4%, and the total may be 0 to 4%. desirable.
- SrO is an effective component for increasing the refractive index of glass.
- the introduction amount is set to 0 to 15%. It is more preferably 1 to 12%, and most preferably 3 to 9%.
- BaO is an essential component of this embodiment, and is an important component for increasing the refractive index of the glass, lowering the liquidus temperature, and increasing the devitrification resistance. If it is 10% or less, the above effect is not sufficient, and if it exceeds 50%, the low dispersibility is impaired and the glass transition temperature may be increased, so the appropriate range is 10 to 50%. It is more preferably 15 to 40%, and most preferably 20 to 35%.
- Na 2 O and K 2 O also give the same effect as Li 2 O.
- the introduction amount of Na 2 O and K 2 O is set to 0 to 8%. It is more preferably 0 to 4%, and most preferably 0 to 3%.
- ZnO has the effect of increasing the refractive index and lowering the glass transition temperature, but at the same time it is a component that increases dispersion, so its addition amount is set to 0-12%. It is more preferably 0 to 5%, and most preferably 0 to 3%.
- Y 2 O 3 and Gd 2 O 3 have a higher effect of increasing the refractive index than SrO and BaO.
- the amount of introduction is large, the liquidus temperature rises rapidly, and the glass tends to devitrify.
- Each is set to 0 to 5%, and the total amount is also set to 0 to 5%.
- Each or the total amount thereof is more preferably 0 to 4%, particularly preferably 0 to 3%.
- La 2 O 3 has the effect of increasing the refractive index as Y 2 O 3 and Gd 2 O 3 , but it is desirable not to introduce it because the effect of increasing the liquidus temperature is particularly great.
- Sb 2 O 3 may be added as a defoaming agent.
- the amount can range from 0 to 1%.
- not only the said component but another component can also be added in the range with which the effect of the optical glass of this embodiment is acquired.
- the glass of this embodiment has a high refractive index (high refractive index (nd)).
- high refractive index (nd) is in the range of 1.56 to 1.61, with 1.56 being the lower limit and 1.61 being the upper limit.
- the glass of the present embodiment has low dispersibility (large Abbe number ( ⁇ d)).
- the refractive index tends to decrease as the Abbe number increases.
- fluorine may be added.
- the composition tends to change due to the volatilization, and it is difficult to maintain the quality of the glass. Become. Therefore, in the glass of this embodiment, the Abbe number ( ⁇ d) is in the range of 63 to 70, with 63 as the lower limit and 70 as the upper limit.
- the glass of this embodiment preferably has a low glass transition temperature (Tg).
- Tg glass transition temperature
- a low glass transition temperature (Tg) brings about effects such as ease of glass molding and suppression of mold deterioration. Therefore, in the glass of this embodiment, the glass transition temperature (Tg) is 530 ° C. or lower.
- liquidus temperature (Tl) is 1000 degrees C or less.
- the glass of this embodiment has a small specific gravity. Therefore, in the glass of the present embodiment, the specific gravity is set to 3.5 or less.
- Such glass in the present embodiment is suitable as an optical element such as a lens provided in an optical apparatus such as a camera or a microscope.
- Tables 1 to 5 show the compositions of the optical glasses according to the examples of the present invention
- Tables 6 to 8 show the compositions of the optical glasses according to the comparative examples of the present invention, the refractive index (nd) and the Abbe number ( ⁇ d).
- the present invention is not limited to these examples.
- optical glass according to Examples and Comparative Examples of the present invention was produced by the following procedure. First, glass raw materials such as oxides, hydroxides, phosphoric acid compounds (phosphate, orthophosphoric acid, etc.), carbonates, and nitrates are used so that the chemical compositions (% by weight) shown in Tables 1 to 8 are obtained. Weighed. Next, the weighed raw materials were mixed, put into a platinum crucible, melted at a temperature of 1150 to 1250 ° C. for about 1 hour, and homogenized with stirring. Then, after lowering to an appropriate temperature, each sample was obtained by casting into a mold or the like and gradually cooling.
- glass raw materials such as oxides, hydroxides, phosphoric acid compounds (phosphate, orthophosphoric acid, etc.), carbonates, and nitrates are used so that the chemical compositions (% by weight) shown in Tables 1 to 8 are obtained. Weighed. Next, the weighed raw materials were mixed, put into a platinum crucible, melted at
- Liquidus temperature (Tl) The liquid phase temperature (Tl) of each sample shown in Tables 1 to 8 is determined by holding the glass in a devitrification test furnace with a temperature gradient of 700 to 1100 ° C. for 18 minutes, and then The presence or absence was observed, and the minimum temperature at which devitrification did not occur was observed from the high temperature side.
- the devitrification resistance evaluation of each sample described in Tables 1 to 8 is performed by holding about 20 g of glass at a temperature equal to or higher than the liquidus temperature (1150 ° C. or higher) for a certain period of time and then melting it at a rate of temperature decrease of 200 ° C. per hour. It cooled to the temperature below a glass transition temperature (300 degrees C or less), and the presence or absence of devitrification was confirmed visually.
- the description of “impossible to measure” indicates that when glass was manufactured, measurement (that is, use as optical glass) was impossible due to partial devitrification of glass, mixing of bubbles, etc. It is.
- the description “Not implemented” indicates that when glass was produced, the necessity of measurement and evaluation did not occur due to complete devitrification of the glass.
- Comparative Example 1 In the glass of Comparative Example 1 containing La 2 O 3 , the glass transition temperature (Tg) was 539 ° C., the liquidus temperature (Tl) was as high as 1020 ° C., and devitrification was observed in the devitrification resistance evaluation. .
- Comparative Example 2 In Comparative Example 2 in which CaO exceeds 4%, BaO is less than 10%, and ZnO exceeds 12%, the Abbe number ( ⁇ d) is as small as 61.15, and devitrification was observed in the devitrification resistance evaluation. It was.
- Comparative Example 3 In Comparative Example 3 in which Al 2 O 3 exceeds 5%, partial devitrification was observed in the obtained glass, and measurement (use as optical glass) was impossible.
- Comparative Example 4 In Comparative Example 4 containing SrO in excess of 15%, the liquidus temperature (Tl) was as high as 1050 ° C., and devitrification was observed in the devitrification resistance evaluation. (5) Comparative Example 5 In Comparative Example 5 containing more than 25% of B 2 O 3 , devitrification was observed in the devitrification resistance evaluation. (6) Comparative Example 6 In Comparative Example 6 containing Gd 2 O 3 in excess of 5%, the liquidus temperature (Tl) was as high as 1090 ° C. (7) Comparative Example 7 In Comparative Example 7 where Li 2 O exceeds 10%, the obtained glass was completely devitrified.
- Comparative Example 8 In Comparative Example 8 in which Y 2 O 3 exceeds 5%, the obtained glass was completely devitrified.
- Comparative Example 9 In Comparative Example 9 containing La 2 O 3 , the liquidus temperature (Tl) was as high as 1060 ° C., and devitrification was observed in the devitrification resistance evaluation.
- Comparative Example 10 In Comparative Example 10 containing BaO in an amount exceeding 50%, the obtained glass was completely devitrified.
- Comparative Example 11 In Comparative Example 11 where P 2 O 5 exceeds 60%, devitrification was observed in the devitrification resistance evaluation. Further, bubbles were mixed in the glass, so that it could not be used as an optical glass.
- Comparative Example 12 In Comparative Example 12 containing La 2 O 3 , the glass transition temperature (Tg) was as high as 542 ° C. and the liquidus temperature (Tl) was as high as 1040 ° C., and devitrification was observed in the devitrification resistance evaluation. (13) Comparative Example 13 In Comparative Example 13 where P 2 O 5 is less than 30%, devitrification was observed in the devitrification resistance evaluation. (14) Comparative Example 14 In Comparative Example 14 where B 2 O 3 was less than 10%, devitrification was observed in the devitrification resistance evaluation.
- Comparative Example 15 In Comparative Example 15 not containing Li 2 O, the glass transition temperature (Tg) was as high as 565 ° C., and devitrification was observed in the devitrification resistance evaluation. (16) Comparative Example 16 In Comparative Example 16 where BaO was less than 10%, devitrification was observed in the devitrification resistance evaluation. (17) Comparative Example 17 In Comparative Example 17 where P 2 O 5 was less than 30%, devitrification was observed in the devitrification resistance evaluation. (18) Comparative Example 18 In Comparative Example 18 in which B 2 O 3 was less than 10%, the liquidus temperature (Tl) was as high as 1010 ° C., and devitrification was observed in the devitrification resistance evaluation.
- Comparative Example 19 In Comparative Example 19 containing no Li 2 O, devitrification was observed in the devitrification resistance evaluation. (20) Comparative Example 20 In Comparative Example 20 in which BaO was less than 10%, the liquidus temperature (Tl) was as high as 1030 ° C., and devitrification was observed in the devitrification resistance evaluation.
- the phosphate glass of this example is suitable for mold press molding in addition to optical constants in which the refractive index (nd) is 1.56 to 1.61 and the Abbe number ( ⁇ d) is 63 to 70.
- the glass transition temperature (Tg) was low, the liquidus temperature (Tl) was low, and the devitrification resistance was also excellent. This is suitable for chromatic aberration correction and is extremely useful in mold press molding and hot preform molding.
- devitrification was observed when a sample was obtained or evaluation of devitrification resistance, and the liquidus temperature (Tl) was often high. This indicates that the mold press molding and the hot preform molding lack stability and are not suitable.
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Abstract
Description
本発明の実施例及び比較例に係る光学ガラスは、以下の手順で作製した。まず、表1~8に記載の化学組成(重量%)となるよう、酸化物、水酸化物、リン酸化合物(リン酸塩、正リン酸等)、炭酸塩、及び硝酸塩等のガラス原料を秤量した。次に、秤量した原料を混合して白金ルツボに投入し、1150~1250℃の温度で1時間程度熔融し、攪拌均質化した。その後、適当な温度に下げてから金型等に鋳込み、徐冷することにより、各サンプルを得た。
(1)屈折率(nd)とアッベ数(νd)
表1~8に記載の各サンプルの屈折率(nd)及びアッベ数(νd)は、屈折率測定器(カルニュー光学工業社製;「KPR-200」)を用いて測定及び算出した。なお、屈折率の値は、小数点以下第5位までとした。
表1~8に記載の各サンプルのガラス転移温度(Tg)は、示差熱・熱重量同時測定装置(ブルカー社製;「TG-DTA2000SA」)を用いて、毎分10℃の昇温速度で測定したDTA曲線から決定した。
表1~8に記載の各サンプルの液相温度(Tl)は、ガラスを700~1100℃の温度勾配がついた失透試験炉内で18分間保持した後、倍率100倍の顕微鏡で結晶の有無を観察し、高温側から見て失透が生じない最低温度とした。
表1~8に記載の各サンプルの比重(Sg)は、サンプルの質量と、圧力101.325kPa(標準気圧)のもとにおける、それと同体積の4℃の純水の質量との比として表示し、JIS Z 8807(1976)「液中で秤量する測定方法」に準じた方法で測定した。
La2O3が含まれる比較例1のガラスにおいては、ガラス転移温度(Tg)が539℃、液相温度(Tl)が1020℃と高く、また耐失透性評価において失透がみられた。
(2)比較例2
CaOが4%を超え、BaOが10%未満、ZnOが12%を超えて含まれる比較例2では、アッベ数(νd)が61.15と小さく、また耐失透性評価において失透が見られた。
(3)比較例3
Al2O3が5%を超えて含まれる比較例3では、得られたガラスに一部失透がみられ、測定(光学ガラスとしての使用)は不可能であった。
(4)比較例4
SrOが15%を超えて含まれる比較例4では、液相温度(Tl)が1050℃と高く、また耐失透性評価において失透がみられた。
(5)比較例5
B2O3が25%を超えて含まれる比較例5では、耐失透性評価において失透がみられた。
(6)比較例6
Gd2O3が5%を超えて含まれる比較例6では、液相温度(Tl)が1090℃と高かった。
(7)比較例7
Li2Oが10%を超えて含まれる比較例7では、得られたガラスが完全に失透していた。
(8)比較例8
Y2O3が5%を超えて含まれる比較例8では、得られたガラスが完全に失透していた。
(9)比較例9
La2O3を含む比較例9では、液相温度(Tl)が1060℃と高く、また耐失透性評価において失透が見られた。
(10)比較例10
BaOが50%を超えて含まれる比較例10では、得られたガラスが完全に失透していた。
(11)比較例11
P2O5が60%を超えて含まれる比較例11では、耐失透性評価において失透がみられた。またガラス中に気泡が混入し、光学ガラスとしての使用は不可能であった。
(12)比較例12
La2O3を含む比較例12では、ガラス転移温度(Tg)が542℃、液相温度(Tl)が1040℃と高く、また耐失透性評価において失透が見られた。
(13)比較例13
P2O5が30%未満である比較例13では、耐失透性評価において失透がみられた。
(14)比較例14
B2O3が10%未満である比較例14では、耐失透性評価において失透がみられた。
(15)比較例15
Li2Oが含まれない比較例15では、ガラス転移温度(Tg)が565℃と高く、また耐失透性評価において失透が見られた。
(16)比較例16
BaOが10%未満である比較例16では、耐失透性評価において失透がみられた。
(17)比較例17
P2O5が30%未満である比較例17では、耐失透性評価において失透がみられた。
(18)比較例18
B2O3が10%未満である比較例18では、液相温度(Tl)が1010℃と高く、また耐失透性評価において失透がみられた。
(19)比較例19
Li2Oを含まない比較例19では、耐失透性評価において失透がみられた。
(20)比較例20
BaOが10%未満である比較例20では、液相温度(Tl)が1030℃と高く、また耐失透性評価において失透がみられた。
Claims (11)
- 重量百分率で、
B2O3:10~25%、
P2O5:30~60%、
Al2O3:0~5%、
Li2O:0.1~10%
SrO:0~15%、
BaO:10~50%、
ZnO:0~12%、
Y2O3:0~5%、
Gd2O3:0~5%、
の各成分を含有し、かつ、
La2O3を含有しない
ことを特徴とする光学ガラス。 - 重量百分率で、
MgO:0~4%、
CaO:0~4%、
の各成分を含有することを特徴とする請求項1に記載の光学ガラス。 - 重量百分率で、MgOとCaOの合計が4%以下であることを特徴とする請求項2に記載の光学ガラス。
- 重量百分率で、
Na2O:0~8%、
K2O:0~8%、
の各成分を含有することを特徴とする請求項1~3の何れか一項に記載の光学ガラス。 - Y2O3とGd2O3の合計が5%以下であることを特徴とする請求項1~4の何れか一項に記載の光学ガラス。
- 屈折率(nd)が1.56~1.61の範囲、かつ、アッベ数(νd)が63~70の範囲にある、請求項1~5の何れか一項に記載の光学ガラス。
- ガラス転移温度(Tg)が530℃以下である、請求項1~6のいずれか一項に記載の光学ガラス。
- 液相温度(Tl)が1000℃以下である、請求項1~7の何れか一項に記載の光学ガラス。
- 液相温度以上の温度から毎時200℃の降温速度でガラス転移温度以下の温度まで冷却した際に、失透が発生しない請求項1~8の何れか一項に記載の光学ガラス。
- 請求項1~9の何れか一項に記載の光学ガラスを用いた光学素子。
- 請求項10に記載の光学素子を備える光学装置。
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CN201580040556.6A CN106536436B (zh) | 2014-09-05 | 2015-07-21 | 光学玻璃、使用有光学玻璃的光学元件、光学装置 |
JP2016546377A JP6540706B2 (ja) | 2014-09-05 | 2015-07-21 | 光学ガラス、光学ガラスを用いた光学素子、光学装置 |
EP15838673.0A EP3190097B1 (en) | 2014-09-05 | 2015-07-21 | Optical glass, optical element using optical glass, and optical device |
US15/428,691 US9988300B2 (en) | 2014-09-05 | 2017-02-09 | Optical glass, optical element using optical glass, and optical device |
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US15/428,691 Continuation US9988300B2 (en) | 2014-09-05 | 2017-02-09 | Optical glass, optical element using optical glass, and optical device |
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JP2002211949A (ja) * | 2001-01-12 | 2002-07-31 | Minolta Co Ltd | プレス成形用光学ガラス、プレス成形用プリフォーム材およびこれを用いた光学素子 |
WO2003072518A1 (fr) * | 2002-02-20 | 2003-09-04 | Kabushiki Kaisha Ohara | Verre optique |
JP2006052119A (ja) * | 2004-07-15 | 2006-02-23 | Hoya Corp | リン酸塩光学ガラス、精密プレス成形用プリフォームおよびその製造方法、光学素子およびその製造方法 |
JP2014227336A (ja) * | 2013-05-21 | 2014-12-08 | 成都光明光▲電▼股▲分▼有限公司 | リン酸塩光学ガラス、精密プレス成形用プレキャスト、及び光学素子 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58130136A (ja) * | 1982-01-25 | 1983-08-03 | Hoya Corp | 光学ガラス |
JP4035898B2 (ja) | 1998-08-21 | 2008-01-23 | フジノン株式会社 | プレス成形レンズ用光学ガラス |
EP1227069B1 (en) * | 2001-01-29 | 2004-11-17 | Hoya Corporation | Optical glass |
US7598189B2 (en) * | 2004-09-29 | 2009-10-06 | Hoya Corporation | Phosphate optical glass, preform for precision press molding and manufacturing method of the same, optical element and manufacturing method of the same |
JP5123487B2 (ja) * | 2005-09-30 | 2013-01-23 | Hoya株式会社 | 精密プレス成形用光学ガラス、精密プレス成形用プリフォームおよびその製造方法、光学素子およびその製造方法 |
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JP5760789B2 (ja) * | 2010-08-06 | 2015-08-12 | 旭硝子株式会社 | 光学ガラス |
CN101973705B (zh) * | 2010-09-28 | 2012-12-12 | 成都光明光电股份有限公司 | 一种光学玻璃及光学元件 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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WO2003072518A1 (fr) * | 2002-02-20 | 2003-09-04 | Kabushiki Kaisha Ohara | Verre optique |
JP2006052119A (ja) * | 2004-07-15 | 2006-02-23 | Hoya Corp | リン酸塩光学ガラス、精密プレス成形用プリフォームおよびその製造方法、光学素子およびその製造方法 |
JP2014227336A (ja) * | 2013-05-21 | 2014-12-08 | 成都光明光▲電▼股▲分▼有限公司 | リン酸塩光学ガラス、精密プレス成形用プレキャスト、及び光学素子 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018105279A1 (ja) * | 2016-12-07 | 2018-06-14 | 株式会社 オハラ | 光学ガラス、プリフォーム及び光学素子 |
CN110114321A (zh) * | 2016-12-07 | 2019-08-09 | 株式会社小原 | 光学玻璃、预成形体以及光学元件 |
JPWO2018105279A1 (ja) * | 2016-12-07 | 2019-10-24 | 株式会社オハラ | 光学ガラス、プリフォーム及び光学素子 |
JP7075895B2 (ja) | 2016-12-07 | 2022-05-26 | 株式会社オハラ | 光学ガラス、プリフォーム及び光学素子 |
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US9988300B2 (en) | 2018-06-05 |
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EP3190097A1 (en) | 2017-07-12 |
EP3190097A4 (en) | 2018-04-18 |
CN106536436B (zh) | 2019-07-26 |
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JPWO2016035463A1 (ja) | 2017-06-22 |
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