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EP0709345A1
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Tb- or Eu-containing fluorophosphate fluorescent glass
Assignee: Sumita Optical Glass Inc
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Filing: 1995-10-24
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Granted: —
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Expires: 2015-10-24
Abstract
Abstract A fluorescent glass capable of converting invisible ultraviolet rays into visible rays with high efficiency and available, for example, for controlling the optical axis of a laser beam such as an excimer laser has a chemical composition comprising, at least, phosphorus (P), oxygen (O) and fluorine (F), and further containing Tb or Eu as a fluorescent agent, and may specifically comprise in terms of atoms for making up the glass (mol %) : wherein Ln is Tb or Eu, and Ln' is at least one atom selected from the group consisting of Y, La, Gd and Yb and R is at least one atom selected from the group consisting of Li, Na and K.
Inventors
- 👤 Masaaki c/o Sumita Optical Glass Inc. Otsuka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 08:55
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/0071; C03C3/00; C03C3/12; C03C3/23; C03C3/247; C03C4/12; C09; C09K; C09K11/00; C09K11/08; C09K11/70; C09K11/72; C09K11/73
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
39 words
A Tb- or Eu-containing fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region, having a chemical composition comprising, at least, phosphorus (P), oxygen (0) and fluorine (F), and further containing Tb or Eu as a fluorescent agent.
Claim 2
Dependent Claim
128 words
A Tb- or Eu-containing fluorophosphate fluorescent glass as claimed in Claim 1, wherein the glass has 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 0.5 to 28 %, Zn 0 to 3.5 %, Ln 0.8 to 8 %, Ln' 0 to 6.5 %, Ce 0 to 0.2 %, R 0 to 10 %, O 1 to 15 % and F 15 to 70 %, and Ln is Tb or Eu, Ln' is at least one atom selected from the group consisting of Y, La, Gd and Yb and R is at least one atom selected from the group consisting of Li, Na and K.
Claim 3
Dependent Claim
65 words
A Tb- or Eu-containing fluorophosphate fluorescent glass as claimed in Claim 1 or Claim 2, wherein the glass has the following chemical composition (mol %): and Ln is Tb or Eu, Ln' is at least one atom selected from the group consisting of Y, La, Gd and Yb and R is at least one atom selected from the group consisting of Li, Na and K.
Claim 4
Dependent Claim
114 words
The Tb- or Eu-containing fluorophosphate fluorescent glass as claimed in any one of Claims 1 to 3, wherein the glass has the following chemical composition (mol %): P 5.8 to 14.5 %, Al 1.3 to 8.3 %, Mg 0 to 9.9 %, Ca 0 to 11 %, Sr 0.9 to 16.3 %, Ba 2.5 to 20.9 %, Y 0 to 4.4 % ①, La 0 to 2.2 % ①, Gd 0 to 5 % ①, Yb 0 to 2.6 % ①, Tb 0.8 to 8 % ①, Ce 0 to 0.2 %, O 19.2 to 50.2 % and F 16.4 to 49.4 %, the sum of the elements ① being 0.8 to 8 %.
Claim 5
Dependent Claim
114 words
The Tb- or Eu-containing fluorophosphate fluorescent glass as claimed in any one of Claims 1 to 4, wherein the glass has the following chemical composition (mol %): P 9 to 13 %, Al 3 to 4.5 %, Mg 0 to 7.5 %, Ca 0 to 9 %, Sr 1.5 to 12 %, Ba 5 to 17 %, Y 0 to 3.3 % ②, La 0 to 1.2 % ②, Gd 0 to 2.2 % ②, Yb 0 to 2 % ②, Tb 1.5 to 5 % ②, Ce 0 to 0.1 %, O 30 to 45 % and F 24 to 36 %, the sum of the elements ② being 1.5 to 5 %.
Claim 6
Dependent Claim
29 words
Use of a Tb- or Eu- containing fluorophosphate fluorescent glass as claimed in any one of claims 1 to 5 for controlling the optical axis of a laser beam.
Claim 7
Dependent Claim
26 words
Apparatus for producing a laser beam whenever comprising a Tb- or Eu- containing fluorophosphate fluorescent glass as claimed in any one of claims 1 to 5.
References Cited (Backward Citations)
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