JPH08283038A - Ultraviolet-ray transmitting black glass - Google Patents

Ultraviolet-ray transmitting black glass

Info

Publication number
JPH08283038A
JPH08283038A JP10793795A JP10793795A JPH08283038A JP H08283038 A JPH08283038 A JP H08283038A JP 10793795 A JP10793795 A JP 10793795A JP 10793795 A JP10793795 A JP 10793795A JP H08283038 A JPH08283038 A JP H08283038A
Authority
JP
Japan
Prior art keywords
glass
ultraviolet
black glass
wavelength
transmitting black
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
Application number
JP10793795A
Other languages
Japanese (ja)
Inventor
Koichiro Yoshikawa
行一郎 吉川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Electric Glass Co Ltd
Original Assignee
Nippon Electric Glass Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Electric Glass Co Ltd filed Critical Nippon Electric Glass Co Ltd
Priority to JP10793795A priority Critical patent/JPH08283038A/en
Publication of JPH08283038A publication Critical patent/JPH08283038A/en
Pending legal-status Critical Current

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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
    • C03C4/00—Compositions for glass with special properties
    • C03C4/08—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths
    • 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
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • 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
    • C03C4/00—Compositions for glass with special properties
    • C03C4/0085—Compositions for glass with special properties for UV-transmitting glass

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  • 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)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE: To obtain UV transmitting black glass excellent in thermal shock resistance and chemical durability and not causing cracking or reducing its UV transmissivity, e.g. when the bulb jacket of a mercury lamp for a black light is produced from the glass and is exposed to rain. CONSTITUTION: This UV transmitting black glass has an oxide compsn. consisting of, by weight, 55-75% SiO2 , 0.1-10% Al2 O3 , 9-25% BaO, 0-5% CaO+ MgO+SrO+ZnO, 0-15% PbO, 1.5-10% Na2 O, 0-5% K2 O, 4.5-9% in total of 0.5-9% NiO and 0.3-8% CoO 0-1% As2 O3 +Sb2 O3 , 0-1% Cl2 and 0-1% F2 and has such optical characteristics that it transmits >=50% UV at 365nm wavelength and absorbs visible radiation.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、波長４００〜７００ｎ
ｍの可視光線を完全に吸収し、波長３６５ｎｍ付近の紫
外線の透過性に優れた紫外線透過黒色ガラスに関するも
のである。BACKGROUND OF THE INVENTION The present invention has a wavelength of 400 to 700n.
The present invention relates to an ultraviolet-transparent black glass that completely absorbs visible light of m and has excellent transparency to ultraviolet rays having a wavelength of about 365 nm.

【０００２】[0002]

【従来の技術】紫外線透過黒色ガラスは、主にブラック
ライト用水銀灯外囲器バルブに使用される。このガラス
は、３６５ｎｍの波長前後の紫外線をよく透過させて夜
間あるいは暗室内に載置され、蛍光物質が塗布された物
体や蛍光標識等を発光させることが可能であり、特殊な
照明効果が得られるため、独自の雰囲気を醸し出すのに
有用である。またこのガラスの他の用途としては、秘密
信号用フィルター、紫外線鑑別器があり、いずれも波長
４００〜７００ｎｍの可視光線を完全に吸収するために
光源が見えないという利点がある。2. Description of the Related Art Ultraviolet-transmitting black glass is mainly used for mercury lamp envelope bulbs for black lights. This glass allows ultraviolet rays around a wavelength of 365 nm to pass through well and is placed at night or in a dark room to emit light from an object coated with a fluorescent substance, a fluorescent marker, or the like, and a special lighting effect can be obtained. Therefore, it is useful for creating a unique atmosphere. Other uses of this glass include filters for secret signals and ultraviolet ray discriminators, both of which have the advantage that the light source cannot be seen because they completely absorb visible light having a wavelength of 400 to 700 nm.

【０００３】紫外線透過黒色ガラスは、大量生産するほ
どの重要がないため、一般に粘土坩堝の溶融方式で手巻
き吹き上げによって生産されている。またこの種のガラ
スの材質としては、ソーダライム系ガラスの基礎ガラス
に、可視光線の吸収性能を付与する目的で着色剤を添加
したガラスが主に使用されている。[0003] Since ultraviolet-transparent black glass is not so important as mass production, it is generally produced by hand-blowing by a melting method of a clay crucible. Further, as a material of this type of glass, a glass obtained by adding a colorant to a basic glass of soda lime glass for the purpose of imparting a visible light absorbing performance is mainly used.

【０００４】[0004]

【発明が解決しようとする課題】しかしながらソーダラ
イム系ガラスは、アルカリ金属酸化物やアルカリ土類金
属酸化物を多量に含有するため、溶融性に優れている
が、３０〜３８０℃における熱膨張係数が１００×１０
-7／℃程度と高くなるため、耐熱衝撃性が１００℃程度
と低い。However, soda lime type glass contains a large amount of alkali metal oxides and alkaline earth metal oxides and therefore has excellent meltability, but the coefficient of thermal expansion at 30 to 380 ° C. Is 100 × 10
Since it is as high as -7 / ° C, the thermal shock resistance is as low as 100 ° C.

【０００５】そのため、このようなガラスからブラック
ライト用水銀灯バルブの外囲器を作製した場合、これを
屋外で点灯し、その表面が２００℃以上となった時に、
雨が降りかかったり、水滴が付着するとガラスに熱衝撃
が与えられ割れることがある。Therefore, when an envelope for a mercury lamp bulb for black light is produced from such glass, it is lit outdoors, and when its surface reaches 200 ° C. or higher,
If it rains or drops of water adhere to it, the glass may be subject to thermal shock and break.

【０００６】またソーダライム系ガラスは、化学的耐久
性が悪いため、これからブラックライト用水銀灯バルブ
外囲器を作製し、屋外で使用すると、バルブ外囲器表面
が雨や結露により白濁して紫外線透過率が低下し、製品
の光学的性能を著しく劣化させてしまうという欠点もあ
る。Further, since soda lime type glass has poor chemical durability, when a mercury lamp bulb envelope for black light is produced from this and is used outdoors, the bulb envelope surface becomes clouded due to rain or dew condensation, resulting in ultraviolet rays. There is also a drawback that the transmittance is lowered and the optical performance of the product is significantly deteriorated.

【０００７】本発明は、上記事情に鑑みなされたもので
あり、耐熱衝撃性と化学的耐久性に優れているため、例
えばブラックライト用水銀灯バルブ外囲器を作製し、こ
れに雨が降りかかっても割れたり、紫外線透過率が低下
することのない紫外線透過黒色ガラスを提供することを
目的とする。The present invention has been made in view of the above circumstances, and since it is excellent in thermal shock resistance and chemical durability, for example, a mercury lamp bulb envelope for a black light is produced, and it rains. It is an object of the present invention to provide an ultraviolet-transparent black glass that is not broken or has a reduced ultraviolet transmittance.

【０００８】[0008]

【問題を解決するための手段】本発明者は種々の実験を
行った結果、ＳｉＯ2 −Ａｌ2 Ｏ3 −ＢａＯ−Ｎａ2Ｏ
系ガラスに、着色剤としてＣｏＯとＮｉＯを適量含有さ
せることによって、波長３６５ｎｍ付近の紫外線透過率
が５０％以上、熱膨張係数が６０×１０-7／℃以下、Ｊ
ＩＳ Ｒ３５０２に基づくアルカリ溶出量が、０．１ｍ
ｇ以下であり、しかも粘土坩堝による溶融が可能な紫外
線透過黒色ガラスが得られることを見いだし、本発明を
提案するに至った。As a result of various experiments, the present inventor has found that SiO 2 —Al 2 O 3 —BaO—Na 2 O
By containing an appropriate amount of CoO and NiO as a colorant in the system glass, the ultraviolet transmittance at a wavelength of about 365 nm is 50% or more, the thermal expansion coefficient is 60 × 10 −7 / ° C. or less, J
Alkali elution amount based on IS R3502 is 0.1m
It was found that an ultraviolet-transparent black glass having a weight of g or less and capable of being melted by a clay crucible was obtained, and the present invention was proposed.

【０００９】すなわち本発明の紫外線透過黒色ガラス
は、重量百分率で、ＳｉＯ2 ５５〜７５％、Ａｌ2 Ｏ3
０．１〜１０％、ＢａＯ ９〜２５％、ＣａＯ＋Ｍｇ
Ｏ＋ＳｒＯ＋ＺｎＯ ０〜５％、ＰｂＯ ０〜１５％、
Ｎａ2 Ｏ １．５〜１０％、Ｋ2 Ｏ ０〜５％、ＮｉＯ
０．５〜９％、ＣｏＯ ０．３〜８％、ＮｉＯ＋Ｃｏ
Ｏ ４．５〜１０％、Ａｓ2 Ｏ3 ＋Ｓｂ2 Ｏ3 ０〜１
％、Ｃｌ2 ０〜１％、Ｆ2 ０〜１％の酸化物組成を
有し、波長３６５ｎｍにおける紫外線を５０％以上透過
し、可視光線を吸収する光学的特性を有することを特徴
とする。That is, the ultraviolet-transparent black glass of the present invention has a weight percentage of SiO 2 55 to 75% and Al 2 O 3
0.1-10%, BaO 9-25%, CaO + Mg
O + SrO + ZnO 0-5%, PbO 0-15%,
Na 2 O 1.5-10%, K 2 O 0-5%, NiO
0.5-9%, CoO 0.3-8%, NiO + Co
O 4.5-10%, As 2 O 3 + Sb 2 O 3 0-1
%, Cl 2 0 to 1%, F 2 0 to 1%, and an optical characteristic of transmitting 50% or more of ultraviolet rays at a wavelength of 365 nm and absorbing visible light.

【００１０】[0010]

【作用】以下、本発明の紫外線透過黒色ガラスを構成す
る各成分の作用と、それらの含有範囲の限定理由を示
す。The action of each component constituting the ultraviolet transparent black glass of the present invention and the reason for limiting the content range thereof will be shown below.

【００１１】ＳｉＯ2 は、ガラスの骨格を形成する成分
である。その含有量が５５％より少ないと、ガラスの熱
膨張係数が大きくなりすぎて、耐熱衝撃性が悪くなると
共に化学的耐久性が低下する。一方、７５％より多い
と、ガラスの溶融が困難になる。SiO 2 is a component that forms the skeleton of glass. If the content is less than 55%, the thermal expansion coefficient of the glass becomes too large, the thermal shock resistance deteriorates, and the chemical durability decreases. On the other hand, if it is more than 75%, it becomes difficult to melt the glass.

【００１２】Ａｌ2 Ｏ3 は、ガラスの失透を抑制し、化
学的耐久性を付与する成分である。その含有量が０．１
％より少ないと、ガラスが失透し易くなり、一方、１０
％より多いと、ガラスの粘度が上昇して溶融が困難とな
る。Al 2 O 3 is a component that suppresses devitrification of glass and imparts chemical durability. Its content is 0.1
If it is less than 10%, the glass tends to devitrify, while 10%
If it is more than%, the viscosity of the glass increases and it becomes difficult to melt.

【００１３】ＢａＯは、溶融性を良くする融剤として作
用すると共にガラスの熱膨張係数を小さくし、且つ、可
視域短波長側の光を十分に吸収させるための成分であ
る。その含有量が９％より少ないと、その効果に乏しく
なり、一方、２５％より多いと、ガラスが不安定とな
り、失透傾向が強くなる。BaO is a component that acts as a flux that improves the meltability, reduces the coefficient of thermal expansion of glass, and sufficiently absorbs light in the short wavelength side of the visible region. If the content is less than 9%, the effect becomes poor, while if it is more than 25%, the glass becomes unstable and the devitrification tendency becomes strong.

【００１４】ＣａＯ、ＭｇＯ、ＳｒＯおよびＺｎＯの各
成分は、ガラスの溶融性を改善するためにＢａＯの一部
と置換して用いることが可能であるが、合量で５％より
多くなると、化学的耐久性が悪化すると共に失透傾向が
強くなるため好ましくない。Each component of CaO, MgO, SrO and ZnO can be used by substituting a part of BaO in order to improve the melting property of glass, but if the total amount exceeds 5%, it becomes It is not preferable because the mechanical durability is deteriorated and the devitrification tendency becomes stronger.

【００１５】ＰｂＯは、ガラスの溶融性を改善する成分
であり、ＢａＯの一部と置換して用いることが可能であ
るが、その含有量が１５％より多いと、熱膨張係数が大
きくなりすぎると共に化学的耐久性が悪くなる。PbO is a component that improves the meltability of glass and can be used by substituting a part of BaO. However, if its content is more than 15%, the coefficient of thermal expansion becomes too large. Along with that, the chemical durability becomes worse.

【００１６】Ｎａ2 Ｏは、ガラスの融剤として作用し、
溶融性を大きく改善させるために用いられるが、その含
有量が１．５％より少ないとその効果に乏しく、一方、
１０％より多いと、熱膨張係数が大きくなりすぎると共
に化学的耐久性も悪化する。Na 2 O acts as a flux for glass,
It is used to greatly improve the meltability, but if its content is less than 1.5%, its effect is poor, while
If it is more than 10%, the thermal expansion coefficient becomes too large and the chemical durability also deteriorates.

【００１７】Ｋ2 Ｏは、ガラスの安定性を向上させる効
果があり、Ｎａ2 Ｏの一部と置換させて用いることが可
能であるが、その含有量が５％より多いと、ガラスが固
くなり溶融困難になると共に化学的耐久性が悪化する。K 2 O has an effect of improving the stability of glass and can be used by substituting a part of Na 2 O. However, if the content is more than 5%, the glass becomes hard. It becomes difficult to melt and the chemical durability is deteriorated.

【００１８】ＮｉＯは、ガラスの紫外域の透過率を高く
維持させながら、可視域の光を吸収させるために重要な
役割を果たす成分であるが、その含有量が０．５％より
少ないとその効果に乏しく、一方、９％よりも多いと、
３６５ｎｍ付近の透過率が著しく低下する。NiO is a component that plays an important role in absorbing light in the visible range while keeping the transmittance of the glass in the ultraviolet range at a high level. The effect is poor, while if it is more than 9%,
The transmittance around 365 nm is significantly reduced.

【００１９】ＣｏＯは、ＮｉＯと併用することにより可
視域の光を吸収させることが出来る成分であるが、その
含有量が０．３％よりも少ないと、その効果が充分に得
られず、一方、８％よりも多いと、３６５ｎｍ付近の透
過率が著しく低下すると共に溶融性が悪化する。CoO is a component capable of absorbing light in the visible range when used in combination with NiO. However, if its content is less than 0.3%, its effect cannot be sufficiently obtained. , 8%, the transmittance in the vicinity of 365 nm is significantly reduced and the meltability is deteriorated.

【００２０】また本発明においては、上記した割合でＮ
ｉＯとＣｏＯの含有量を規制すると共に、さらにこれら
の合量を４．５〜９％に規制することが重要である。す
なわちこれらの成分の合量が、４．５％より少ないと、
可視域の光を十分に吸収することが困難となり、一方、
９％より多いと、３６５ｎｍ付近の透過率が著しく低下
すると共に溶融性が著しく悪化するためである。Further, in the present invention, N
It is important to regulate the contents of iO and CoO and further regulate their total amount to 4.5 to 9%. That is, if the total amount of these components is less than 4.5%,
It becomes difficult to absorb light in the visible range sufficiently, while
This is because if it is more than 9%, the transmittance in the vicinity of 365 nm is remarkably lowered and the meltability is remarkably deteriorated.

【００２１】Ａｓ2 Ｏ3 は、ガラスの泡切り剤として作
用する成分であり、またＳｂ2 Ｏ3もガラスの泡切り剤
として作用し、特に低温溶融の場合に効果がある成分で
あるが、これらの合量が１％より多いと、その効果が飽
和する。As 2 O 3 is a component that acts as a glass defoaming agent, and Sb 2 O 3 also acts as a glass defoaming agent, which is particularly effective in the case of low temperature melting. If the total amount of these is more than 1%, the effect is saturated.

【００２２】Ｃｌ2 とＦ2 も同様にガラスの泡切りを促
進する効果があり、それぞれ１％まで用いることが出来
るが、これより多い場合には粘土坩堝の侵食が激しくな
って耐火物のスジやガラスと耐火物の反応物質がガラス
製品中に流出し易くなるため好ましくない。Cl 2 and F 2 also have an effect of promoting defoaming of glass and can be used up to 1% each, but if they are more than this, the erosion of the clay crucible becomes severe and the streaks of the refractory It is not preferable because the reaction material of glass or refractory material easily flows out into the glass product.

【００２３】尚、本発明においてＢ2Ｏ3を含有させる
と、ガラスに分相現象が生じ、化学的耐久性が悪くなる
ため、Ｂ2Ｏ3を含有させないことが望ましい。If B 2 O 3 is contained in the present invention, a phase separation phenomenon occurs in the glass and the chemical durability is deteriorated. Therefore, it is desirable not to contain B 2 O 3 .

【００２４】[0024]

【実施例】以下、本発明の紫外線透過黒色ガラスを実施
例に基づき詳細に説明する。EXAMPLES The ultraviolet transparent black glass of the present invention will be described in detail below with reference to examples.

【００２５】表１は本発明の実施例のガラス（試料Ｎ
ｏ．１〜６）と比較例のガラス（試料Ｎｏ．７〜９）の
組成と特性を示すものである。Table 1 shows the glass of the embodiment of the present invention (Sample N).
o. 1 to 6) and the glass of Comparative Example (Sample Nos. 7 to 9) are shown in composition and characteristics.

【００２６】[0026]

【表１】 [Table 1]

【００２７】表１のＮｏ．１〜９の各試料は、次のよう
にして調製した。No. 1 in Table 1 Each sample of 1-9 was prepared as follows.

【００２８】まず表１に示す組成のガラスになるように
調合したガラス原料を白金坩堝に入れ、電気炉中で１５
５０℃、６時間の条件で溶融した後、この溶融ガラスを
鉄板上に流し出し、次いで５８０℃に保持した徐冷炉に
投入して除歪を施した。First, glass raw materials prepared to give a glass having the composition shown in Table 1 were placed in a platinum crucible and placed in an electric furnace for 15 minutes.
After melting at 50 ° C. for 6 hours, the molten glass was poured onto an iron plate and then placed in an annealing furnace kept at 580 ° C. to remove strain.

【００２９】このようにして作製した各試料を、１０ｍ
ｍ×１０ｍｍ×１ｍｍの寸法に切り出した後、分光光度
計を使用して、波長３６５ｎｍにおける紫外線透過率
と、波長４００〜７００ｎｍにおける可視光線透過率を
測定した。尚、各試料に対しては、酸化セリウムを用い
て測定する両面の光学的研磨を施した。Each sample thus prepared is
After cutting into a size of m × 10 mm × 1 mm, a spectrophotometer was used to measure the ultraviolet transmittance at a wavelength of 365 nm and the visible light transmittance at a wavelength of 400 to 700 nm. In addition, each sample was subjected to optical polishing on both sides measured using cerium oxide.

【００３０】また各試料について、石英管式膨張計を用
いて３０〜３８０℃における平均熱膨張係数を測定し、
ＪＩＳ Ｒ３５０２法の規定に基づく粉末法アルカリ溶
出試験を実施してアルカリ溶出量を原子吸光分析により
測定し、さらに周知の白金球引き上げ方式により１０
2.5 ポイズ粘度における温度を測定し、これらの測定結
果を表１に示した。For each sample, the average coefficient of thermal expansion at 30 to 380 ° C. was measured using a quartz tube type dilatometer,
A powder method alkali elution test based on the JIS R3502 method is carried out to measure the amount of alkali elution by atomic absorption spectrometry.
The temperature at 2.5 poise viscosity was measured, and the measurement results are shown in Table 1.

【００３１】表１から明らかなように実施例であるＮ
ｏ．１〜６の各試料は、紫外線透過率が５０％以上と高
いが、可視光線は全く透過しなかった。また熱膨張係数
が６２×１０-7／℃以下であるため耐熱衝撃性に優れ、
アルカリ溶出量が、０．１０ｍｇ以下と小さいため化学
的耐久性にも優れ、しかも溶融粘度における１０2.5 ポ
イズの温度が１４５０℃以下であるため、溶融性に優れ
ていた。As is apparent from Table 1, N is an example.
o. Each of the samples 1 to 6 had a high ultraviolet transmittance of 50% or more, but did not transmit visible light at all. Moreover, since the thermal expansion coefficient is 62 × 10 −7 / ° C. or less, it has excellent thermal shock resistance,
Since the amount of alkali elution was as small as 0.10 mg or less, the chemical durability was excellent, and since the temperature of 10 2.5 poise in melt viscosity was 1450 ° C. or less, the meltability was excellent.

【００３２】それに対して、比較例であるＮｏ．７〜９
の各試料は、紫外線透過率が５０％以上であったが、い
ずれもアルカリ溶出量が多く、化学的耐久性に劣ってい
た。Ｎｏ．７の試料については、熱膨張係数が８５×１
０-7／℃と高いため、耐熱衝撃性にも劣っていた。また
Ｎｏ．８の試料については、波長４００ｎｍの透過率が
２０％であり、熱膨張係数が８５×１０-7／℃と高かっ
た。さらにＮｏ．９の試料は、波長４００ｎｍの透過率
が１５％であり、しかも１０2.5 ポイズの温度が１６２
０℃と高いため、粘土坩堝による溶融が極めて困難であ
ると考えられる。On the other hand, in Comparative Example No. 7-9
Each sample had an ultraviolet transmittance of 50% or more, but all had a large amount of alkali elution and were inferior in chemical durability. No. Sample No. 7 has a thermal expansion coefficient of 85 x 1
Since it was as high as 0 -7 / ° C, it was also inferior in thermal shock resistance. In addition, No. Sample No. 8 had a transmittance of 20% at a wavelength of 400 nm and a high coefficient of thermal expansion of 85 × 10 −7 / ° C. Furthermore, No. Sample No. 9 has a transmittance of 15% at a wavelength of 400 nm and a temperature of 10 2.5 poise of 162.
Since the temperature is as high as 0 ° C, it is considered that melting by the clay crucible is extremely difficult.

【００３３】[0033]

【発明の効果】以上のように本発明の紫外線透過黒色ガ
ラスは、紫外線透過率が高く、可視光線を完全に吸収
し、しかも優れた耐熱衝撃性と化学的耐久性を有し、粘
土坩堝による溶融が可能である。INDUSTRIAL APPLICABILITY As described above, the ultraviolet-transparent black glass of the present invention has a high ultraviolet transmittance, completely absorbs visible light, has excellent thermal shock resistance and chemical durability, and is made of a clay crucible. It can be melted.

【００３４】従って本発明の紫外線透過黒色ガラスは、
ブラックライト用水銀灯外囲器等のように少量生産で、
しかも高温度条件下で使用され、雨の影響を強く受ける
ような用途に好適である。Therefore, the ultraviolet transparent black glass of the present invention is
With a small amount of production such as mercury lamp envelopes for black lights,
Moreover, it is used under high temperature conditions and is suitable for applications that are strongly affected by rain.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 重量百分率で、ＳｉＯ2 ５５〜７５
％、Ａｌ2 Ｏ3 ０．１〜１０％、ＢａＯ ９〜２５
％、ＣａＯ＋ＭｇＯ＋ＳｒＯ＋ＺｎＯ ０〜５％、Ｐｂ
Ｏ ０〜１５％、Ｎａ2 Ｏ １．５〜１０％、Ｋ2 Ｏ
０〜５％、ＮｉＯ０．５〜９％、ＣｏＯ ０．３〜８
％、ＮｉＯ＋ＣｏＯ ４．５〜９％、Ａｓ2Ｏ3 ＋Ｓｂ2
Ｏ3 ０〜１％、Ｃｌ2 ０〜１％、Ｆ2 ０〜１％
の酸化物組成を有し、波長３６５ｎｍにおける紫外線を
５０％以上透過し、可視光線を吸収する光学的特性を有
することを特徴とする紫外線透過黒色ガラス。1. A weight percentage of SiO 2 55-75.
%, Al 2 O 3 0.1-10%, BaO 9-25
%, CaO + MgO + SrO + ZnO 0-5%, Pb
O 0 to 15%, Na 2 O 1.5 to 10%, K 2 O
0-5%, NiO 0.5-9%, CoO 0.3-8
%, NiO + CoO 4.5-9%, As 2 O 3 + Sb 2
O 3 0 to 1%, Cl 2 0 to 1%, F 2 0 to 1%
UV-transmitting black glass having the optical characteristics of transmitting 50% or more of ultraviolet light having a wavelength of 365 nm and absorbing visible light.
JP10793795A 1995-04-07 1995-04-07 Ultraviolet-ray transmitting black glass Pending JPH08283038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10793795A JPH08283038A (en) 1995-04-07 1995-04-07 Ultraviolet-ray transmitting black glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10793795A JPH08283038A (en) 1995-04-07 1995-04-07 Ultraviolet-ray transmitting black glass

Publications (1)

Publication Number Publication Date
JPH08283038A true JPH08283038A (en) 1996-10-29

Family

ID=14471836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10793795A Pending JPH08283038A (en) 1995-04-07 1995-04-07 Ultraviolet-ray transmitting black glass

Country Status (1)

Country Link
JP (1) JPH08283038A (en)

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NL1016392C2 (en) * 2000-10-12 2001-09-28 Viosol B V Holder for high-quality natural products.
EP1162180A1 (en) * 2000-06-05 2001-12-12 Kabushiki Kaisha Ohara Optical glass suffering little change in refractive index when exposed to ultra-violet light during service
WO2002030842A1 (en) * 2000-10-12 2002-04-18 Viosol B.V. Glass composition suitable as a container for high-grade natural products and glass products such as sheet glass
JPWO2005033031A1 (en) * 2003-10-06 2006-12-14 日本板硝子株式会社 UV transmitting glass and microplate using the same
CN100413011C (en) * 2004-08-06 2008-08-20 于首成 Health-care UV-lamp
US7800309B2 (en) 2004-11-24 2010-09-21 Koninklijke Philips Electronics N.V. Low-pressure mercury vapor discharge lamp and apparatus for treatment
JP2011044421A (en) * 2009-07-23 2011-03-03 Harison Toshiba Lighting Corp Ultraviolet discharge lamp
CN102515525A (en) * 2011-11-22 2012-06-27 上海罗金玻璃有限公司 Glass with high transmissivity of ultraviolet A and preparation method for same
CN106554154A (en) * 2015-09-30 2017-04-05 豪雅冠得股份有限公司 Ultraviolet passes through visible absorption glass and ultraviolet passes through visible absorption optical filter
CN109734310A (en) * 2019-03-04 2019-05-10 南通市国光光学玻璃有限公司 A kind of high light transmission glass of visible optical depth cut-off
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1162180A1 (en) * 2000-06-05 2001-12-12 Kabushiki Kaisha Ohara Optical glass suffering little change in refractive index when exposed to ultra-violet light during service
US7196027B2 (en) 2000-06-05 2007-03-27 Kabushiki Kaisha Ohara Optical glass suffering little change in refractive index by radiation of light
NL1016392C2 (en) * 2000-10-12 2001-09-28 Viosol B V Holder for high-quality natural products.
WO2002030842A1 (en) * 2000-10-12 2002-04-18 Viosol B.V. Glass composition suitable as a container for high-grade natural products and glass products such as sheet glass
US6670292B2 (en) 2000-10-12 2003-12-30 Viosol B.V. Container for high-grade natural products
JPWO2005033031A1 (en) * 2003-10-06 2006-12-14 日本板硝子株式会社 UV transmitting glass and microplate using the same
CN100413011C (en) * 2004-08-06 2008-08-20 于首成 Health-care UV-lamp
US7800309B2 (en) 2004-11-24 2010-09-21 Koninklijke Philips Electronics N.V. Low-pressure mercury vapor discharge lamp and apparatus for treatment
JP2011044421A (en) * 2009-07-23 2011-03-03 Harison Toshiba Lighting Corp Ultraviolet discharge lamp
CN102515525A (en) * 2011-11-22 2012-06-27 上海罗金玻璃有限公司 Glass with high transmissivity of ultraviolet A and preparation method for same
CN106554154A (en) * 2015-09-30 2017-04-05 豪雅冠得股份有限公司 Ultraviolet passes through visible absorption glass and ultraviolet passes through visible absorption optical filter
JP2017065980A (en) * 2015-09-30 2017-04-06 Ｈｏｙａ Ｃａｎｄｅｏ Ｏｐｔｒｏｎｉｃｓ株式会社 Ultraviolet permeation visible light absorption glass and ultraviolet permeation visible light absorption filter
KR20170038662A (en) * 2015-09-30 2017-04-07 호야 칸데오 옵트로닉스 가부시키가이샤 Ultraviolet transmiting and visible-light absorbing glass and ultraviolet transmiting and visible-light absorbing filter
CN115304273A (en) * 2015-09-30 2022-11-08 Hoya株式会社 Ultraviolet-transmitting visible light-absorbing glass and ultraviolet-transmitting visible light-absorbing filter
CN109734310A (en) * 2019-03-04 2019-05-10 南通市国光光学玻璃有限公司 A kind of high light transmission glass of visible optical depth cut-off
CN110066107A (en) * 2019-03-04 2019-07-30 南通市国光光学玻璃有限公司 It can be seen that the preparation method of the high light transmission glass of optical depth cut-off
CN110066107B (en) * 2019-03-04 2021-12-03 南通市国光光学玻璃有限公司 Preparation method of high-transmittance optical glass with visible light deep cutoff
CN109734310B (en) * 2019-03-04 2021-12-03 南通市国光光学玻璃有限公司 High-transmittance optical glass with visible light deep cutoff

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