US5234871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vanadium- and copper-containing glasses for use as filters for light sources intended for use with night vision devices
Assignee: Schott Glass Technologies Inc
•
Filing: 1991-11-27
•
Granted: 1993-08-10
•
Expires: 2011-11-27
Abstract
Abstract The invention relates to a glass consisting essentially of -P2O5 43-59 -SiO2 0-9 -Al2O3 7-11 -Li2O 0-15 -Na2O 0-15 -K2O 0-15 -MgO 0-15 -CaO 0-0.5 -BaO 0-7 -ZnO 0-7 -CeO2 0-0.5 -CuO 7-21 -V2O5 0.07-0.7 -Pr6O11 0-1.5 -Nd2O3 0-1.5 -Nb2O5 0-3 -B2O3 0-3 -Y2O3 0-3 -Cr2O3 0-1 - having a photopic transmission of at least 10% at full rated voltage and a color space of NVIS Green A or B. The glass is useful in the production of optical filters for use with light sources in order to render said sources compatible with night vision imaging systems.
Inventors
- 👤 David G. Krashkevich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:21
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/16; C03C3/21; C03C3/04; C03C3/062; C03C4/00; C03C4/10; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/904
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
68 words
A glass consisting essentially of (in mole percent): ______________________________________
P.sub.2 O.sub.5
43-59
SiO.sub.2
0-9
Al.sub.2 O.sub.3
7-11
Li.sub.2 O
0-5
Na.sub.2 O
0-15
K.sub.2 O
0-15
MgO 0-15
CaO 0-0.5
BaO 0-7
ZnO 0-7
CeO.sub.2
0-0.5
CuO 7-21
V.sub.2 O.sub.5
0.07-0.7
Pr.sub.6 O.sub.11
0-1.5
Nd.sub.2 O.sub.3
0-1.5
______________________________________ having a photopic transmission of at least 10% at full rated voltage and a color space of NVIS Green A.
Claim 2
Dependent Claim
68 words
A glass consisting essentially of (in mole percent): ______________________________________
P.sub.2 O.sub.5
43-59
SiO.sub.2
0-9
Al.sub.2 O.sub.3
7-11
Li.sub.2 O
0-5
Na.sub.2 O
0-15
K.sub.2 O
0-15
MgO 0-15
CaO 0-0.5
BaO 0-7
ZnO 0-7
CeO.sub.2
0-0.5
CuO 7-21
V.sub.2 O.sub.5
0.07-0.7
Pr.sub.6 O.sub.11
0-1.5
Nd.sub.2 O.sub.3
0-1.5
______________________________________ having a photopic transmission of at least 10% at full rated voltage and a color space of NVIS Green A.
Claim 3
Dependent Claim
22 words
A glass according to claim 1, having a NVIS radiance not exceeding 1.7×10 -10 with a lighting source of 0.;1 fL luminance.
Claim 4
Dependent Claim
49 words
A glass according to claim 1, consisting essentially of: ______________________________________
P.sub.2 O.sub.5
45-55
SiO.sub.2
0.5-7
Al.sub.2 O.sub.3
8-10
Li.sub.2 O
2-4
Na.sub.2 O
1-7
K.sub.2 O
5-13
MgO 0-12
CaO 0-0.3
BaO 0-5
ZnO 0-5
CeO.sub.2
0.2-0.4
CuO 9-20
V.sub.2 O.sub.5
0.15-0.40
Pr.sub.6 O.sub.11
0-1.0
Nd.sub.2 O.sub.3
0-1.0
______________________________________
Claim 5
Dependent Claim
22 words
A glass according to claim 2, having an NVIS radiance not exceeding 1.7×10 -10 with a lighting source of 0.1 fL luminance.
Claim 6
Dependent Claim
12 words
A glass according to claim 1, having a thickness of 3 mm.
Claim 7
Dependent Claim
12 words
A glass according to claim 1, having a thickness of 2 mm
Claim 8
Dependent Claim
12 words
A glass according to claim 1, having a thickness of 1.5 mm.
Claim 9
Dependent Claim
12 words
A glass according to claim 1, having a thickness of 1 mm.
Claim 10
Dependent Claim
79 words
A glass consisting essentially of (in mole percent): ______________________________________
P.sub.2 O.sub.5
43-59
SiO.sub.2
0-9
Al.sub.2 O.sub.3
7-11
Li.sub.2 O
0-5
Na.sub.2 O
0-15
K.sub.2 O
0-15
MgO 0-15
CaO 0-0.5
BaO 0-7
ZnO 0-7
CeO.sub.2
0-0.5
CuO 7-21
V.sub.2 O.sub.5
0.07-0.7
Nd.sub.2 O.sub.3
0-1.5,
______________________________________ wherein said glass also contains not more than 1.5 Pr 6 O 11 , has a photopic transmission of at least 10% at full rated voltage and a color space of NVIS Green B.
Claim 11
Dependent Claim
79 words
A glass consisting essentially of (in mole percent): ______________________________________
P.sub.2 O.sub.5
43-59
SiO.sub.2
0-9
Al.sub.2 O.sub.3
7-11
Li.sub.2 O
0-5
Na.sub.2 O
0-15
K.sub.2 O
0-15
MgO 0-15
CaO 0-0.5
BaO 0-7
ZnO 0-7
CeO.sub.2
0-0.5
CuO 7-21
V.sub.2 O.sub.5
0.07-0.7
Nd.sub.2 O.sub.3
0-1.5,
______________________________________ wherein said glass also contains not more than 1.5 Pr 6 O 11 , has a photopic transmission of at least 10% at full rated voltage and a color space of NVIS Green B.
Claim 12
Dependent Claim
11 words
An optical filter consisting essentially of a glass of claim 9.
Claim 13
Dependent Claim
80 words
A glass consisting essentially of (in mole percent): ______________________________________
P.sub.2 O.sub.5
43-59
SiO.sub.2
0-9
Al.sub.2 O.sub.3
7-11
Li.sub.2 O
0-15
Na.sub.2 O
0-15
K.sub.2 O
0-15
MgO 0-15
CaO 0-0.5
BaO 0-7
ZnO 0-7
CeO.sub.2
0-0.5
CuO 7-21
V.sub.2 O.sub.5
0.07-0.7
Pr.sub.6 O.sub.11
0-1.5
Nd.sub.2 O.sub.3
0-1.5
Nb.sub.2 O.sub.5
0-3
B.sub.2 O.sub.3
0-3
Y.sub.2 O.sub.3
0-3
Cr.sub.2 O.sub.3
0-1
______________________________________ having a photopic transmission of at least 10% at full rated voltage and a color space of NVIS Green A.
Claim 14
Dependent Claim
80 words
A glass consisting essentially of (in mole percent): ______________________________________
P.sub.2 O.sub.5
43-59
SiO.sub.2
0-9
Al.sub.2 O.sub.3
7-11
Li.sub.2 O
0-15
Na.sub.2 O
0-15
K.sub.2 O
0-15
MgO 0-15
CaO 0-0.5
BaO 0-7
ZnO 0-7
CeO.sub.2
0-0.5
CuO 7-21
V.sub.2 O.sub.5
0.07-0.7
Pr.sub.6 O.sub.11
0-1.5
Nd.sub.2 O.sub.3
0-1.5
Nb.sub.2 O.sub.5
0-3
B.sub.2 O.sub.3
0-3
Y.sub.2 O.sub.3
0-3
Cr.sub.2 O.sub.3
0-1
______________________________________ having a photopic transmission of at least 10% at full rated voltage and a color space of NVIS Green A.
Claim 15
Dependent Claim
61 words
A glass according to claim 1, consisting essentially of: ______________________________________
P.sub.2 O.sub.5
45-55
SiO.sub.2
0.5-7
Al.sub.2 O.sub.3
8-10
Li.sub.2 O
2-6
Na.sub.2 O
1-7
K.sub.2 O
3-13
MgO 0-12
CaO 0-0.3
BaO 0-5
ZnO 0-5
CeO.sub.2
0.2-0.4
CuO 9-20
V.sub.2 O.sub.5
0.15-0.40
Pr.sub.6 O.sub.11
0-1.0
Nd.sub.2 O.sub.3
0-1.0
Nb.sub.2 O.sub.5
0-2
B.sub.2 O.sub.3
0-2
Y.sub.2 O.sub.3
0-2
Cr.sub.2 O.sub.3
0-0.5
______________________________________
Claim 16
Dependent Claim
91 words
A glass consisting essentially of (in mole percent): ______________________________________
P.sub.2 O.sub.5
43-59
SiO.sub.2
0-9
Al.sub.2 O.sub.3
7-11
Li.sub.2 O
0-15
Na.sub.2 O
0-15
K.sub.2 O
0-15
MgO 0-15
CaO 0-0.5
BaO 0-7
ZnO 0-7
CeO.sub.2
0-0.5
CuO 7-21
V.sub.2 O.sub.5
0.07-0.7
Nd.sub.2 O.sub.3
0-1.5
Nb.sub.2 O.sub.5
0-3
B.sub.2 O.sub.3
0-3
Y.sub.2 O.sub.3
0-3
Cr.sub.2 O.sub.3
0-1,
______________________________________ wherein said glass also contains not more than 1.5 Pr 6 O 11 , has a photopic transmission of at least 8% at full rated voltage and a color space of NVIS Green B.
Claim 17
Dependent Claim
91 words
A glass consisting essentially of (in mole percent): ______________________________________
P.sub.2 O.sub.5
43-59
SiO.sub.2
0-9
Al.sub.2 O.sub.3
7-11
Li.sub.2 O
0-15
Na.sub.2 O
0-15
K.sub.2 O
0-15
MgO 0-15
CaO 0-0.5
BaO 0-7
ZnO 0-7
CeO.sub.2
0-0.5
CuO 7-21
V.sub.2 O.sub.5
0.07-0.7
Nd.sub.2 O.sub.3
0-1.5
Nb.sub.2 O.sub.5
0-3
B.sub.2 O.sub.3
0-3
Y.sub.2 O.sub.3
0-3
Cr.sub.2 O.sub.3
0-1,
______________________________________ wherein said glass also contains not more than 1.5 Pr 6 O 11 , has a photopic transmission of at least 8% at full rated voltage and a color space of NVIS Green B.
References Cited (Backward Citations)
US5036025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-09 | 1997-02-08 | 1997-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-09 | 2001-02-08 | 2001-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-09 | 2005-02-08 | 2005-08-10 | $7700.00 | Window Closed / Lapsed |