EP0775673A1
Expired / Lapsed
EP
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A fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region
Assignee: Sumita Optical Glass Inc
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Filing: 1996-11-20
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Granted: —
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Expires: 2016-11-20
Abstract
Abstract A fluorophosphate fluorescent glass of the present invention, capable of converting invisible ultraviolet rays into visually observable visible rays with high efficiency and available for controlling the optical axis of a laser beam such as an excimer laser has a chemical composition comprising, at least, (I) phosphorus (P), oxygen (0) and fluorine (F), as glass constituting components, and (II) at least one member selected from divalent europium, terbium and (samarium + manganese), as a fluorescent agent, the divalent europium being contained as an essential component and at least one of samarium and manganese being contained as an essential component when terbium is present. In particular, a fluorophosphate fluorescent glass exhibiting a blue fluorescence containing europium as an essential component and a fluorophosphate fluorescent glass exhibiting a white fluorescence containing at least one of samarium and manganese as an essential component are provided.
Inventors
- 👤 Masaaki c/o Sumita Optical Glass Inc. Yamazaki
- 👤 Masaaki c/o Sumita Optical Glass Inc. Otsuka
- 👤 Shinobu C/O Sumita Optical Glass Inc. Nagahama
- 👤 Naruhito Sumita Optical Glass Inc Sawanobori
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 05:30
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/12; C03C3/00; C03C3/12; C03C3/23; C03C3/247; C03C4/0071
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
77 words
A fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region, having a chemical composition comprising, at least, (I) phosphorus (P), oxygen (0) and fluorine (F), as glass constituting components, and (II) at least one member selected from divalent europium, terbium and (samarium + manganese), as a fluorescent agent, the divalent europium being contained as an essential component and at least one of samarium and manganese being contained as an essential component when terbium is present.
Claim 2
Dependent Claim
144 words
A fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region, as claimed in Claim 1, wherein the glass constituting components are represented, in term of atoms for making up the glass, by the following chemical composition (mol %): P 1 to 15 %, Al 1 to 18 % Mg 0 to 12 %, Ca 0 to 18 % Sr 0.5 to 21 %, Ba 0 to 28 % Zn 0 to 3.5 %, Eu 0.001 to 0.8 %, Ln 0 to 6.5 % (Ln: at least one atom selected from Y, La, Gd, Yb, Lu, Dy, Tb and Tm) Ce 0 to 0.2 % R 0 to 10 % (R: at least one atom selected from Li, Na and K), O 4 to 55 % F 15 to 70 % and Cl 0 to 12 % and a blue fluorescence is presented.
Claim 3
Dependent Claim
167 words
A fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region, as claimed in Claim 1, wherein the glass constituting components are represented, in term of atoms for making up the glass, by the following chemical composition (mol %): P 1 to 15 %, Al 1 to 18 % Mg 0 to 12 %, Ca 0 to 18 % Sr 1 to 21 %, Ba 0 to 28 % Zn 0 to 3.5 %, Eu 0.01 to 0.8 %, Tb 0.2 to 4 % Sm 0 to 3 % Mn 0 to 1 % (at least one of Sm and Mn being contained) Ln 0 to 4 % (Ln: at least one atom selected from Y, La, Gd, Yb, Lu, Dy, and Tm) Ce 0 to 0.2 % R 0 to 3 % (R: at least one atom selected from Li, Na and K), O 4 to 55 % F 15 to 70 % and Cl 0 to 10 % and a white fluorescence is presented.
Claim 4
Dependent Claim
75 words
A fluorophosphate fluorescent glass capable of exhibiting a blue fluorescence in the visible region, as claimed in claim 2, wherein the glass constituting components are represented, in terms of atoms for making up the glass, by the following chemical composition (mol %): wherein R is at least one atom selected from Li, Na and K, Ln is and Ln is at least one atom selected from Y, La, Gd, Yb, Lu, Dy, Tb and Tm.
Claim 5
Dependent Claim
52 words
A fluorophosphate fluorescent glass capable of exhibiting a blue fluorescence in the visible region, as claimed in Claim 2, wherein the glass constituting components are represented, in terms of atoms for making up the glass, by the following chemical composition (mol %): wherein the sum of ① = 0.001 ∼ 3.3 %.
Claim 6
Dependent Claim
156 words
A fluorophosphate fluorescent glass capable of exhibiting a white fluorescence in the visible region, as claimed in Claim 3, wherein the glass constituting components are represented, in term of atoms for making up the glass, by the following chemical composition (mol %): P 1 to 12 Al 3 to 10 Mg 0 to 6 Ca 0 to 11 Sr 1.5 to 12 Ba 0 to 17 Zn 0 to 2 R 0 to 3 Mn 0 to 0.6 ① Sm 0 to 2.7 ① Tb 0.2 to 3.5 Eu 0.01 to 0.4 Ln 0 to 3 Ce 0 to 0.2 O 6 to 40 F 25 to 65 and Cl 0 to 6 wherein R is at least one atom selected from Li, Na and K, Ln is at least one atom selected from Y, La, Gd, Yb, Lu, Dy and Tm, and either of Sm or Mn of ① or both of them are present.
Claim 7
Dependent Claim
156 words
A fluorophosphate fluorescent glass capable of exhibiting a white fluorescence in the visible region, as claimed in Claim 3, wherein the glass constituting components are represented, in term of atoms for making up the glass, by the following chemical compsition (mol %): P 1 to 11 Al 3 to 10 Mg 0 to 3 Ca 0 to 11 Sr 1.5 to 7 Ba 0 to 9 Zn 0 to 1 R 0 to 1 Mn 0 to 0.6 ① Sm 0 to 2.7 ① Tb 0.2 to 3.5 Eu 0.01 to 0.4 Ln 0 to 3 Ce 0 to 0.2 O 6 to 40 F 25 to 65 and Cl 0 to 6 wherein R is at least one atom selected from Li, Na and K, Ln is at least one atom selected from Y, La, Gd, Yb, Lu, Dy and Tm, and either of Sm or Mn of ① or both of them are present.
Claim 8
Dependent Claim
23 words
A display device or backlight of an LCD whenever comprising a fluorophosphate fluorescent glass as claimed in any one of the preceding claims.
References Cited (Backward Citations)
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