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US5755998A
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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: 1998-05-26
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Expires: 2016-11-20
Abstract
Abstract According to the present invention, there is provided a fluorophosphate fluorescent glass, capable of converting invisible ultraviolet rays into visually observable visible rays with a high efficiency and available for controlling the optical axis of a laser beam such as excimer laser, etc. The feature of this fluorescent glass consists in a fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region, having a chemical composition comprising, at least, (I) phosphorus (P), oxygen (O) and fluorine (F), as glass constituting components, and (II) at least one member selected from the group consisting of divalent europium, terbium, samarium and 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 contained. 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 Yamazaki
- 👤 Masaaki Otsuka
- 👤 Shinobu Nagahama
- 👤 Naruhito Sawanobori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:40
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/12; C03C3/00; C03C3/12; C03C3/23; C03C3/247; C03C4/0071
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
41 words
A fluorophosphate fluorescent glass capable of exhibiting blue fluorescence in the visible region by ultraviolet excitation, having a chemical composition comprising, at least, phosphorus (P), oxygen (O) and fluorine (F), as glass constituting components, and divalent europium, as a fluorescent agent.
Claim 2
Dependent Claim
41 words
A fluorophosphate fluorescent glass capable of exhibiting blue fluorescence in the visible region by ultraviolet excitation, having a chemical composition comprising, at least, phosphorus (P), oxygen (O) and fluorine (F), as glass constituting components, and divalent europium, as a fluorescent agent.
Claim 3
Dependent Claim
130 words
The 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 4
Dependent Claim
138 words
The 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 term of atoms for making up the glass, by the following chemical composition (mol %): P 1 to 13% Al 2 to 12% Mg 0 to 6% Ca 0 to 11% Sr 1.5 to 12% Ba 0 to 17% Zn 0 to 2% R 0 to 3.2% Eu 0.001 to 0.2% Ln 0 to 4% Ce 0 to 0.2% O 4 to 55% F 15 to 70% and Cl 0 to 12% wherein R is at least one atom selected from the group consisting of Li, Na and K, and Ln is at least one atom selected from the group consisting of Y, La, Gd, Yb, Lu, Dy, Tb and Tm.
Claim 5
Dependent Claim
133 words
The 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 term of atoms for making up the glass, by the following chemical composition (mol %): P 1.4 to 4.9 Al 8.4 to 11.6 Mg 0 to 3.6 Ca 0 to 11 Sr 4.3 to 6.35 Ba 0 to 7.2 Eu 0.001 to 0.2 1 Y 0 to 3.3 1 La 0 to 3.3 1 Gd 0 to 3.3 1 Yb 0 to 3.3 1 Lu 0 to 3.3 1 Dy 0 to 3.3 1 Tb 0 to 3.3 1 Tm 0 to 3.3 1 Ce 0 to 0.2 O 4.3 to 17.5 F 47 to 66 and Cl 0 to 12 wherein the sum of 1=0.001˜3.3%.
Claim 6
Dependent Claim
74 words
A fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region, having a chemical composition comprising, at least, phosphorus (P), oxygen (O) and fluorine (F), as glass constituting components, and divalent europium, as a fluorescent agent, and at least one member selected from the group consisting of terbium, samarium and manganese, as a further fluorescent agent, at least one of samarium and manganese being contained as an essential component when terbium is contained.
Claim 7
Dependent Claim
74 words
A fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region, having a chemical composition comprising, at least, phosphorus (P), oxygen (O) and fluorine (F), as glass constituting components, and divalent europium, as a fluorescent agent, and at least one member selected from the group consisting of terbium, samarium and manganese, as a further fluorescent agent, at least one of samarium and manganese being contained as an essential component when terbium is contained.
Claim 8
Dependent Claim
150 words
The fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region, as claimed in claim 5, 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 9
Dependent Claim
162 words
The fluorophosphate fluorescent glass capable of exhibiting a white fluorescence in the visible region, as claimed in claim 6, 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 0.61 Sm 0 to 2.71 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 the group consisting of Li, Na and K, Ln is at least one atom selected from the group consisting of Y, La, Gd, Yb, Lu, Dy and Tm, and either of Sm or Mn of 1 or both of them are contained.
Claim 10
Dependent Claim
162 words
The fluorophosphate fluorescent glass capable of exhibiting a white fluorescence in the visible region, as claimed in claim 6, 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 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 0.61 Sm 0 to 2.71 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 the group consisting of Li, Na and K, Ln is at least one atom selected from the group consisting of Y, La, Gd, Yb, Lu, Dy and Tm, and either of Sm or Mn of 1 or both of them are contained.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |