JPH03170344A - Ultraviolet-absorbing galss composition - Google Patents
Ultraviolet-absorbing galss compositionInfo
- Publication number
- JPH03170344A JPH03170344A JP30864589A JP30864589A JPH03170344A JP H03170344 A JPH03170344 A JP H03170344A JP 30864589 A JP30864589 A JP 30864589A JP 30864589 A JP30864589 A JP 30864589A JP H03170344 A JPH03170344 A JP H03170344A
- Authority
- JP
- Japan
- Prior art keywords
- ultraviolet
- glass
- glass composition
- expressed
- oxide
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 16
- 239000011521 glass Substances 0.000 claims abstract description 56
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 9
- 229910052770 Uranium Inorganic materials 0.000 claims abstract description 8
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 8
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 7
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 9
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 9
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 9
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 abstract description 9
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 238000002834 transmittance Methods 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000075 oxide glass Substances 0.000 description 2
- 238000007539 photo-oxidation reaction Methods 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- 101100459438 Caenorhabditis elegans nac-1 gene Proteins 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 239000008395 clarifying agent Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Landscapes
- Glass Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は紫外線吸収ガラス組成物、特にウェザ−メータ
ーの光源に用いる紫外線フィルター用ガラスに間する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to ultraviolet absorbing glass compositions, particularly glasses for ultraviolet filters used in weathermeter light sources.
従来、各種製品、部品の耐候性を試験するｋめに、ウェ
ザ−メーターによる耐候試験が行なわれている。これは
試験体の屋外暴露による影響を短期間に調べる促進試験
であるから、試験体に照射する光エネルギーのスペクト
ル強度分布は、太陽光エネルギーのそれにできるだけ近
似していることが望ましい。しかしウェザ−メーターに
用いる光源はその条件には合致しないので、ウェザ−メ
ーターの光源からの光をフィルターガラスを通過させて
照射することにより、試験体に照射される光エネルギー
のスペクトル強度分布を、太陽エネルギーのスペクトル
強度分布に接近させるための努力が払われてきた。Conventionally, weather resistance tests using weather meters have been conducted to test the weather resistance of various products and parts. Since this is an accelerated test to examine the effects of outdoor exposure of the test specimen over a short period of time, it is desirable that the spectral intensity distribution of the light energy irradiated onto the test specimen be as close as possible to that of sunlight energy. However, the light source used in a weather meter does not meet these conditions, so by irradiating the light from the weather meter's light source through a filter glass, we can calculate the spectral intensity distribution of the light energy irradiated onto the test specimen. Efforts have been made to approximate the spectral intensity distribution of solar energy.
現在ウェザ−メーターの光源としては紫外線カーボンを
用いる場合とサンシャインカーボンを用いる場合とがあ
るが、それに用いられているフィルターガラスの紫外線
透過率は、紫外線カーボン用のガラスでは、２７５ｎｍ
以下でＯ％、３７０ｎｍで９１％、サンシャインカーボ
ン用ガラスについては、２５５ｎｍ以下で０％、３６０
ｎｍで９１％である。Currently, there are two types of weather meters that use ultraviolet carbon and sunshine carbon as light sources, but the ultraviolet transmittance of the filter glass used for them is 275 nm for ultraviolet carbon glass.
0% below, 91% at 370nm, 0% below 255nm, 360% for sunshine carbon glass
It is 91% in nm.
しかし、これらの光源とフィルターガラスとの組合せに
よる耐候試験と、屋外暴露試験との対応はまだ十分では
なく、改善の余地がある。However, the correspondence between weather resistance tests using combinations of these light sources and filter glasses and outdoor exposure tests is still insufficient, and there is room for improvement.
従来から用いられているサンシャインウェザ−メーター
のフィルターガラスは、前述の紫外線透過率を満足して
いるが、短波長例えば３００ｎｍ程度の紫外線透過率が
７０〜８０％と大き過ぎ、ウエザーメターによる耐候試
験と屋外暴露試験との対応がとれないという不都合があ
った。The filter glass of the conventional Sunshine Weather Meter satisfies the above-mentioned UV transmittance, but the UV transmittance at short wavelengths, for example, around 300 nm, is too high at 70-80%, and the weather resistance test using the Weather Meter is difficult. There was an inconvenience that it was not possible to correspond to the outdoor exposure test.
本発明は、このような不都合を解決するための、紫外線
吸収成分を含有したウェザ−メーター光源のフィルター
に適した、新規な紫外線吸収ガラス組成物を提供するこ
とを目的とする。An object of the present invention is to provide a novel ultraviolet-absorbing glass composition suitable for a filter for a weathermeter light source, which contains an ultraviolet-absorbing component and which solves these disadvantages.
すなわち本発明は、酸化チタンをＴｊＯ２で表示して０
．０２〜２．０重量％、酸化セリウムをＣｅＯ２で表示
して ０．００１ 〜０．１重量％含有し、かつＦｅ，
Ｖ， Ｃｒ， Ｕ， Ｍｎ， Ｃｏ、ＣｕＳ
Ａｓ， およびＳｂのいずれの酸化物も実質的に含
有しない紫外線吸収ガラス組成物である。That is, in the present invention, titanium oxide is expressed as TjO2 and 0
．． 02 to 2.0% by weight, 0.001 to 0.1% by weight of cerium oxide expressed as CeO2, and Fe,
V, Cr, U, Mn, Co, CuS
This is an ultraviolet absorbing glass composition that does not substantially contain any of the oxides of As and Sb.
また本発明は、ＦｅＳＶ， Ｃｒ， ＵＳＭｎ，
Ｃｏ，Ｃｕ，Ａｓ， およびＳｂのいずれの酸化物
も実質的に含有せず、その厚さをＴＩｎｌｌとするとき
、酸化チタンをＴｉ０２で表示して ０．０２〜２．０
重量％ 酸化セリウムをＣｅＯ２で表示して０．０
０１〜０．１重量％含有し、かつ、０．１２÷Ｔ≦Ｔｉ
Ｏ２≦１．５０÷ＴＯ．０ １ ０÷ＴＳＣｅＯ２≦０
．１００÷Ｔである酸化物ガラス組成物からなる、所定
厚さを有する紫外線吸収ガラス物体である。ここで所定
厚さは通常１〜１０ｍｍの範囲である。Further, the present invention provides FeSV, Cr, USMn,
It does not substantially contain any oxides of Co, Cu, As, and Sb, and when its thickness is TInll, titanium oxide is expressed as Ti02 and is 0.02 to 2.0.
Weight% Cerium oxide expressed as CeO2 is 0.0
01 to 0.1% by weight, and 0.12÷T≦Ti
O2≦1.50÷TO. 0 1 0÷TSCeO2≦0
．． An ultraviolet absorbing glass object having a predetermined thickness and made of an oxide glass composition of 100÷T. Here, the predetermined thickness is usually in the range of 1 to 10 mm.
本発明のガラス組成物は紫外線吸収成分として酸化チタ
ンと酸化セリウムを含有する。酸化セリウムはＣｅが３
価と４価をとり得るので、酸化セリウムと、その他にＦ
ｅ，Ｖ、ＣｒＳＵ， Ｍｎ，Ｃ ｏＳＣ ｕ，Ａ ｓＳ
Ｓ ｂなどの二つ以上の原子価をとり得る金属元素の酸
化物との両者がガラス中に存在すると、二つのレドック
スペアの間で紫外線照射による酸化還元反応が生し、ソ
ラリゼーションを起こす結果、使用中にガラスの透過率
が変化するという不都合を生しる。The glass composition of the present invention contains titanium oxide and cerium oxide as ultraviolet absorbing components. Cerium oxide has 3 Ce
Since it can be valent or tetravalent, cerium oxide and other F
e, V, CrSU, Mn, Co SC u, A sS
When both an oxide of a metal element that can have two or more valences such as Sb is present in the glass, an oxidation-reduction reaction occurs between the two redox pairs due to ultraviolet irradiation, resulting in solarization. This results in the disadvantage that the transmittance of the glass changes during use.
従って、ＣｅＯ２以外に、二つ以上の原子価をとり得る
金属元素のうち、Ｆｅ，Ｖ、Ｃｒ，Ｕ，Ｍｎ，Ｃｏ，Ｃ
ｕ，Ａｓ，Ｓｂの酸化物を実質的に含有させないことは
、本発明の必須条件である。Therefore, other than CeO2, among the metal elements that can have two or more valences, Fe, V, Cr, U, Mn, Co, C
It is an essential condition of the present invention that substantially no oxides of u, As, or Sb be contained.
但し、Ｓｎおよびｐｂの酸化物はＣｅの酸化物と共存し
てもソラリゼーションを促進しないので、ガラス組成物
中にそれぞれ３％まで、および２％まで含有させること
が出来る。特に本発明に関わる紫外線吸収ガラス組成物
は、波長が４００ｎｍ以上の可視光線、近赤外線の領域
で透過率が大きいことが望ましいので、 紫外線吸収ガ
ラス中にＦｅの酸化物が入ることは望ましくない。ガラ
ス中にＦｅの酸化物がＣｅの酸化物と共存すると、紫外
線を照射されたときに、ソラリゼーションによって２価
のＦｅが増大し、１０００ｎｍ付近の近赤外線を吸収す
るようになるからである。従って許容されるＦｅの含有
量はＦｅ２０３で表わして多くとも０．０１％である。However, Sn and Pb oxides do not promote solarization even if they coexist with Ce oxides, so they can be contained up to 3% and 2%, respectively, in the glass composition. In particular, it is desirable for the ultraviolet absorbing glass composition according to the present invention to have high transmittance in the visible light and near infrared rays having a wavelength of 400 nm or more, so it is undesirable for Fe oxide to be contained in the ultraviolet absorbing glass. This is because when Fe oxide coexists with Ce oxide in glass, when irradiated with ultraviolet rays, divalent Fe increases due to solarization and begins to absorb near-infrared rays around 1000 nm. Therefore, the permissible Fe content is at most 0.01% expressed as Fe203.
ガラス中のＣｒ， Ｖ， Ｕの酸化物は紫外線吸収
成分であるが、Ｃｅの酸化物と共存すると上記のソラリ
ゼーションを生じることの他に、これらの酸化物は可視
部に吸収を有するので、本発明の主旨からして、これら
の成分を用いることは避けなければならない。従ってガ
ラス中のＣｒ，ＶＳ．Ｕの酸化物の含有量はそれらの合
計で０．００５％以下でなければならない。Ｍｎ，
Ｃｏ， Ｃｕ， Ａｓ、Ｓｂの酸化物はこのような
可視光の吸収はすくないものの、同様にこれらの合計で
０．００５％以下でなければならない。Oxides of Cr, V, and U in glass are ultraviolet absorbing components, but when they coexist with oxides of Ce, in addition to causing the above-mentioned solarization, these oxides have absorption in the visible region, so In view of the spirit of the invention, the use of these components must be avoided. Therefore, Cr in glass, VS. The total content of U oxides must be 0.005% or less. Mn,
Although oxides of Co, Cu, As, and Sb do not absorb such visible light, the total amount of these must be 0.005% or less.
ＴＩＯ２は紫外線の吸収成分である。本発明に規定する
０．０２〜２．０重量％の範囲内でＴｉＯ２をガラス
に導入すると、３５０ｎｍから紫外線の吸収が始まり、
３００ｎｍ以下の吸収が大きくなる。ＴｉＯ２が０．０
２％未満では、ガラスの紫外線吸収端が２５０ｎｍ以下
になり好ましくない。ＴｉＯ２が２．０％を越えると紫
外線の吸収端が３００ｎｍ以上になり好ましくない。TIO2 is an ultraviolet absorbing component. When TiO2 is introduced into glass within the range of 0.02 to 2.0% by weight as specified in the present invention, ultraviolet light absorption starts from 350 nm.
Absorption below 300 nm becomes large. TiO2 is 0.0
If it is less than 2%, the ultraviolet absorption edge of the glass becomes 250 nm or less, which is not preferable. If TiO2 exceeds 2.0%, the ultraviolet absorption edge will be 300 nm or more, which is not preferable.
ＣｅＯ２は紫外線の吸収成分である。ガラス中では前述
のように３価のＣｅと４価のＣｅが共存するが、３価の
Ｃｅは３１５ｎｍに吸収の中心を有し、４価のＣｅは２
４Ｏｎｍ付近に吸収の中心があり、３５０ｎｍ以下の紫
外線を吸収する。但しＣｅの酸化物は、二つ以上のレド
ツクスペアが存在しなくても紫外線によって光酸化され
、３価のＣｅが４価のＣｅと成るために、Ｃｅの酸化物
を含有するガラスの紫外線透過率は変化する。しかし、
３１５ｎｍ付近の吸光係数は３価のＣｅと４価のＣｅて
ほぼ等しいこと、及び本発明におけるガラス中のＣｅＯ
２含有量が小さいこと、更に前述のように、３価のＣｅ
の光酸化を促進するようなレドックスペアを形成する他
の酸化物が実質的に含有させないことにより、本発明に
よる紫外線吸収ガラスの紫外線照射による紫外線透過率
の変化は小さい。しかも、ウェザ−メーターによる耐候
試験は１ ０００時間を越えることが普通であるが、セ
リウム酸化物の光酸化は素早く生じるので、本発明によ
るウェザ−メーター光源用のフィルターガラスを用いた
ウェザ−メーター試験に於いては、４価のＣｅ酸化物と
チタン酸化物によって決定される紫外線透過率を持つフ
ィルターガラスと、光源を組み合わせて得られる紫外線
照射量を試験体は受けることになる。CeO2 is an ultraviolet absorbing component. As mentioned above, trivalent Ce and tetravalent Ce coexist in glass, but trivalent Ce has an absorption center at 315 nm, and tetravalent Ce has an absorption center at 2
The absorption center is around 4 Onm, and it absorbs ultraviolet rays of 350 nm or less. However, even if two or more redox pairs are not present, Ce oxide is photo-oxidized by ultraviolet rays, and trivalent Ce becomes tetravalent Ce, so the ultraviolet transmittance of glass containing Ce oxide decreases. changes. but,
The extinction coefficient near 315 nm is almost equal for trivalent Ce and tetravalent Ce, and the absorption coefficient of CeO in the glass in the present invention
2 content is small, and as mentioned above, trivalent Ce
Since other oxides that form redox pairs that promote photo-oxidation of the glass are not substantially contained, the ultraviolet transmittance of the ultraviolet absorbing glass according to the present invention changes little when exposed to ultraviolet irradiation. In addition, although a weather test using a weather meter normally lasts over 1,000 hours, photo-oxidation of cerium oxide occurs quickly, so a weather meter test using the filter glass for a weather meter light source according to the present invention was conducted. In this case, the test specimen receives an amount of ultraviolet irradiation obtained by combining a light source and a filter glass whose ultraviolet transmittance is determined by tetravalent Ce oxide and titanium oxide.
Ｃｅ０２の含有量が０．００１％未満では３００〜３５
０ｎｍの透過率が大きくなり、０．１％を越えると３０
０〜３５０ｎｍの透過率が小さくなり好ましくない。300 to 35 when the Ce02 content is less than 0.001%
The transmittance at 0 nm becomes large, and when it exceeds 0.1%, it becomes 30
The transmittance in the range of 0 to 350 nm becomes small, which is not preferable.
更に、ガラスの紫外線透過率は、ガラスに含有される紫
外線吸収成分の含有量と、紫外線が通過するガラスの厚
さの積によって決定されるので、ガラスの厚さをＴｍｍ
とするとき、酸化チタンと酸化セリウムの含有量は重量
％て表示してそれぞれ、０．１２÷ Ｔ ≦ ＴｉＯ２
≦ １．５０ ÷ ＴＯ．０１０ ÷Ｔ ≦ ＣｅＯ２
≦ ０．１００ ÷ Ｔであることが好ましい。Furthermore, the ultraviolet transmittance of glass is determined by the product of the content of ultraviolet absorbing components contained in the glass and the thickness of the glass through which ultraviolet rays pass.
When, the content of titanium oxide and cerium oxide is expressed in weight%, respectively, as 0.12÷ T ≦ TiO2
≦ 1.50 ÷ TO. 010 ÷T ≦ CeO2
It is preferable that ≦0.100÷T.
本発明の紫外線吸収ガラス組成物は酸化物ガラスであれ
ば、珪酸塩系、ほう酸塩系を問わず使用できるが、珪酸
塩系特にほう珪酸塩系ガラスが好ましく、特にウェザ−
メーターの光源によってフィルターの温度が上昇するの
で、フィルターの熱割れを防止するために熱膨張率の小
さくなるようなガラス組成が好ましく、例えばＳｉＯ２
６５〜７５％、８２０３ １〜２０％、ＡＩ２０３
０〜５％、ＭｇＯＯ〜７％、ＣａＯ Ｏ〜１０％、Ｌｌ
２０ ０〜２％、Ｎａ２０ ０．３〜２０％、Ｋ２０
０〜１２％、Ｓ ｎ Ｏ ２ ０ 〜３％、ｐｂｏ
Ｏ〜２％、 Ｔｉ０２ ０．０５〜１．２５％、Ｃｅ０
２ ０．００１〜０．０８％ の例を挙げることができ
る。In the ultraviolet absorbing glass composition of the present invention, any silicate-based or borate-based oxide glass can be used, but silicate-based glasses, particularly borosilicate-based glasses, are preferred, and weather-resistant glasses are particularly preferred.
Since the temperature of the filter increases due to the light source of the meter, in order to prevent thermal cracking of the filter, it is preferable to use a glass composition that has a small coefficient of thermal expansion. For example, SiO2
65-75%, 8203 1-20%, AI203
0~5%, MgOO~7%, CaO~10%, Ll
20 0-2%, Na20 0.3-20%, K20
0-12%, SnO20-3%, pbo
O~2%, Ti02 0.05~1.25%, Ce0
2 0.001 to 0.08% can be given as an example.
第１表の如きガラス組成になるように、高純度の原料を
用いてバッチを調合し、白金川堝にてバッチを溶解して
試料ガラスを得た。溶解時の清澄剤はＮａＣ １を用い
た。得られたガラスの３５０ｎｍと３００ｎｍに於ける
紫外線透過率と紫外線吸収端も同時に示した。A batch was prepared using high-purity raw materials so as to have a glass composition as shown in Table 1, and the batch was melted at Shirokanegawaba to obtain a sample glass. NaC 1 was used as a clarifying agent during dissolution. The ultraviolet transmittance and ultraviolet absorption edge of the obtained glass at 350 nm and 300 nm are also shown.
また、第１表には紫外線吸収成分を含有しない、従来か
らウェザ−メーターの光源用フィルターとして用いられ
てきたガラスを比較例として示す。Table 1 also shows as a comparative example glass that does not contain ultraviolet absorbing components and has been conventionally used as a filter for the light source of a weather meter.
第１表から明かな如く、本発明による紫外線吸収ガラス
は３５０ｎｍに於ける透過率が８８％、３００ｎｍに於
ける透過率が１３〜２７％、紫外線吸収端は２７０ｎｍ
と２８０ｎｍであり、比較例と比べて短波長の紫外線透
過率が低いことが分かる。As is clear from Table 1, the ultraviolet absorbing glass according to the present invention has a transmittance of 88% at 350 nm, a transmittance of 13 to 27% at 300 nm, and an ultraviolet absorption edge of 270 nm.
and 280 nm, and it can be seen that the short wavelength ultraviolet transmittance is lower than that of the comparative example.
尚、実施例に示す各ガラスの鉄分はＦｅ２０３で表示し
ていずれも０．００４重量％以下であった。The iron content of each glass shown in the examples was 0.004% by weight or less, expressed as Fe203.
またガラス中のＣｒ， Ｖ， Ｕの酸化物の含有量
はそれらの合計で０．００５％以下であり、Ｕ，Ｍｎ，
Ｃｏ，−Ｃｕ，Ａｓ，Ｓｂの酸化物はこれらの合計で０
．００５％以下であった。In addition, the total content of oxides of Cr, V, and U in the glass is 0.005% or less;
The total amount of oxides of Co, -Cu, As, and Sb is 0.
．． It was less than 0.005%.
実施例から分かるように、本発明による紫外線吸収ガラ
スは、従来から用いられているウェザ−メーターの光源
用フィルターガラスとは異なり、適度に紫外線を吸収し
例えば３００ｎｍに於ける透過率が４０％以下で吸収端
が２６０〜２９０ｎｍの範囲内にあるガラスを得ること
ができ、ウェザ−メーターの光源用フィルターとして用
いると、試験体の受ける紫外線照射量を太陽光のそれと
類似させることができ、その効果は大きい。As can be seen from the examples, the ultraviolet absorbing glass according to the present invention, unlike the conventionally used filter glass for the light source of a weather meter, absorbs ultraviolet rays moderately and has a transmittance of 40% or less at 300 nm, for example. It is possible to obtain glass with an absorption edge in the range of 260 to 290 nm, and when used as a filter for the light source of a weather meter, the amount of ultraviolet irradiation received by the specimen can be made similar to that of sunlight, and its effect is is big.
第１図は本発明の実施例１と比較例１どの分光透過率を
示すグラフである。FIG. 1 is a graph showing the spectral transmittance of Example 1 of the present invention and Comparative Example 1.
Claims (1)
．０重量％、酸化セリウムをＣｅＯ＿２で表示して０．
００１〜０．１重量％含有し、かつＦｅ、Ｖ、Ｃｒ、Ｕ
、Ｍｎ、Ｃｏ、Ｃｕ、Ａｓ、およびＳｂのいずれの酸化
物も実質的に含有しない紫外線吸収ガラス組成物。 （２）Ｆｅ、Ｖ、Ｃｒ、Ｕ、Ｍｎ、Ｃｏ、Ｃｕ、Ａｓ、
およびＳｂのいずれの酸化物も実質的に含有せず、その
厚さをＴｍｍとするとき、酸化チタンをＴｉＯ＿２で表
示して０．０２〜２．０重量％、酸化セリウムをＣｅＯ
＿２で表示して０．００１〜０．１重量％含有し、かつ
、 ０．１２÷Ｔ≦ＴｉＯ＿２≦１．５０÷Ｔ および、 ０．０１０÷Ｔ≦ＣｅＯ＿２≦０．１００÷Ｔである酸
化物ガラス組成物からなる、所定厚さを有する紫外線吸
収ガラス物体。 （３）特許請求の範囲第２項に記載の紫外線吸収ガラス
物体から成るウェザーメーター光源用紫外線吸収ガラス
フィルター。[Claims] (1) Titanium oxide expressed as TiO_2 is 0.02 to 2
．． 0% by weight, cerium oxide is expressed as CeO_2 and 0.
001 to 0.1% by weight, and contains Fe, V, Cr, U
, Mn, Co, Cu, As, and Sb. (2) Fe, V, Cr, U, Mn, Co, Cu, As,
When the thickness is Tmm, titanium oxide is expressed as TiO_2 and is 0.02 to 2.0% by weight, and cerium oxide is expressed as CeO.
Oxidation containing 0.001 to 0.1% by weight expressed as _2 and satisfying 0.12÷T≦TiO_2≦1.50÷T and 0.010÷T≦CeO_2≦0.100÷T An ultraviolet absorbing glass object having a predetermined thickness and comprising a glass composition. (3) An ultraviolet absorbing glass filter for a weather meter light source comprising the ultraviolet absorbing glass object according to claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30864589A JPH03170344A (en) | 1989-11-28 | 1989-11-28 | Ultraviolet-absorbing galss composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30864589A JPH03170344A (en) | 1989-11-28 | 1989-11-28 | Ultraviolet-absorbing galss composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03170344A true JPH03170344A (en) | 1991-07-23 |
Family
ID=17983558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30864589A Pending JPH03170344A (en) | 1989-11-28 | 1989-11-28 | Ultraviolet-absorbing galss composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03170344A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100241647B1 (en) * | 1996-07-02 | 2000-02-01 | 리타 버어그스트롬 | Green soda-lime-silica glass containing selenium, chromium trioxide and iron and cobalt oxides |
| WO2001066477A1 (en) * | 2000-03-06 | 2001-09-13 | Nippon Sheet Glass Co., Ltd. | Flat glass having high transmittance |
| JP2004123525A (en) * | 2002-09-30 | 2004-04-22 | Carl Zeiss:Fa | Borosilicate glass and its use |
| JP2010248046A (en) * | 2009-04-17 | 2010-11-04 | Nippon Electric Glass Co Ltd | Glass |
| JP2021098652A (en) * | 2015-05-29 | 2021-07-01 | Ａｇｃ株式会社 | Ultraviolet transmitting glass |
| WO2023022074A1 (en) * | 2021-08-17 | 2023-02-23 | 日本電気硝子株式会社 | Glass substrate for space-based solar power generation |
-
1989
- 1989-11-28 JP JP30864589A patent/JPH03170344A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100241647B1 (en) * | 1996-07-02 | 2000-02-01 | 리타 버어그스트롬 | Green soda-lime-silica glass containing selenium, chromium trioxide and iron and cobalt oxides |
| WO2001066477A1 (en) * | 2000-03-06 | 2001-09-13 | Nippon Sheet Glass Co., Ltd. | Flat glass having high transmittance |
| US6844280B2 (en) | 2000-03-06 | 2005-01-18 | Nippon Sheet Glass Company, Limited | Flat glass having high transmittance |
| JP2004123525A (en) * | 2002-09-30 | 2004-04-22 | Carl Zeiss:Fa | Borosilicate glass and its use |
| JP2010248046A (en) * | 2009-04-17 | 2010-11-04 | Nippon Electric Glass Co Ltd | Glass |
| JP2021098652A (en) * | 2015-05-29 | 2021-07-01 | Ａｇｃ株式会社 | Ultraviolet transmitting glass |
| WO2023022074A1 (en) * | 2021-08-17 | 2023-02-23 | 日本電気硝子株式会社 | Glass substrate for space-based solar power generation |
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