§
Luxuse
Patent Intelligence
Sign In
Patent US2786483A successfully refreshed from Google Patents.
Patent US5635109A successfully refreshed from Google Patents.
← Back to Patent Explorer
US5635109A Expired / Lapsed US ⏱️ 0.0 years remaining

Tb- or eu-containing fluorophosphate fluorescent glass

Assignee: Sumita Optical Glass Inc
•
Filing: 1995-10-30
•
Granted: 1997-06-03
•
Expires: 2015-10-30
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract According to the present invention, there is provided a fluorescent glass of the present invention is 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 Tb- or Eu-containing fluorophosphate fluorescent glass having a chemical composition comprising, at least, phosphorus (P), oxygen (O) and fluorine (F), and further containing Tb or Eu as a fluorescent agent, and specifically comprising, in terms of atoms for making up the glass (mol %): ______________________________________ P 1˜15 Al 1˜18 Mg 0˜12 Ca 0˜18 Sr 0.5˜21 Ba 0.5˜28 Zn 0˜3.5 R 0˜10 Ln 0.8˜8 Ln' 0˜6.5 Ce 0˜0.2 O 4˜55 F 15˜70 ______________________________________ 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 Otsuka

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 15:55
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: 3
Claim 1
Independent Claim 117 words
A Tb- or Eu-containing fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region, having the following chemical composition in 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 1.2 to 8%, Ln' 0 to 6.5%, Ce 0 to 0.2%, R 0 to 10%, O 4 to 55% and F 15 to 70%, and wherein 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 2
Dependent Claim 117 words
A Tb- or Eu-containing fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region, having the following chemical composition in 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 1.2 to 8%, Ln' 0 to 6.5%, Ce 0 to 0.2%, R 0 to 10%, O 4 to 55% and F 15 to 70%, and wherein 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 126 words
A Tb- or Eu-containing fluorophosphate fluorescent glass capable of exhibiting fluorescence in the visible region, having as claimed in claim 1, wherein the glass has the following chemical composition of mol %: P 2 to 13%, Al 2 to 12%, Mg 0 to 6%, Ca 0 to 9%, Sr 1.5 to 12%, Ba 1.5 to 17%, Zn 0 to 2%, Ln 1.2 to 5%, Ln' 0 to 4%, R 0 to 3%, Ce 0 to 0.2%, O 4 to 55% and F 15 to 70%, and wherein 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.

References Cited (Backward Citations)

US4415464A Cited
US4120814A Cited
FR2381724B1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2000-06-02 2000-12-02 2001-06-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2004-06-02 2004-12-02 2005-06-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2008-06-02 2008-12-02 2009-06-03 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag