US2021276915A1PendingUtilityA1
Highly transmissive glasses with high solarisation resistance, use thereof and method for production thereof
Est. expiryJan 12, 2032(~5.5 yrs left)· nominal 20-yr term from priority
Inventors:Simone Monika RitterUwe KolbergStefanie HansenThomas WeingaertnerCaroline De LucaThomas KirschPeter-Franz Skiba
C03C 3/089C03C 3/097C03C 3/095C03C 3/078C03C 13/046G02B 6/02C03C 3/118C03C 3/068C03B 5/225C03C 3/066C03B 5/193C03C 3/091
66
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Claims
Abstract
Glasses are provided that are highly transparent and have very good resistance to solarization. The resistance to solarization is favored to a special extent by the production method. The concentrations of reduced polyvalent ion species are reduced by targeted use of bubbling with an oxidizing gas. Methods for producing glasses and to the uses thereof, particularly as core glasses in optical waveguides, are also provided.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A glass having an attenuation of 1300 dB/km at a wavelength of 1050 nm, the glass comprising the following components in the amounts indicated in % by weight:
from
to
B 2 O 3
0
24
SiO 2
23
62.1
Al 2 O 3
0
10
Li 2 O
0
10
Na 2 O
0
18.5
K 2 O
0
25.7
MgO
0
8
CaO
0
8
SrO
0
24.4
BaO
0
57.8
ZnO
0
40
La 2 O 3
0
25
ZrO 2
0
10
Ta 2 O 5
0
22
Sum of the alkaline earth
18
55
content (RO) and ZnO
2 . The glass according to claim 1 , wherein B 2 O 3 is at most 15% by weight of the glass.
3 . The glass according to claim 1 , wherein SiO 2 is at most 50% by weight of the glass.
4 . The glass according to claim 1 , wherein Al 2 O 3 is up to 6% by weight of the glass.
5 . The glass according to claim 1 , wherein Na 2 O is up to 9% by weight of the glass.
6 . The glass according to claim 1 , wherein K 2 O is at most 3% by weight of the glass.
7 . The glass according to claim 1 , wherein the portion of alkali oxides is at most 10% by weight of the glass.
8 . The glass according to claim 1 , wherein MgO is up to 3% by weight and/or CaO is up to 2% by weight of the glass.
9 . The glass according to claim 1 , wherein SrO is up to 4% by weight of the glass.
10 . The glass according to claim 1 , wherein BaO is at least 11% by weight of the glass.
11 . The glass according to claim 1 , wherein ZnO is at most 22% by weight of the glass.
12 . The glass according to claim 1 , wherein La 2 O 3 is at least 4% by weight and at most 21% by weight of the glass.
13 . The glass according to claim 1 , wherein ZrO 2 does not exceed 6% by weight of the glass.
14 . The glass according to claim 1 , wherein the total content of the alkaline earth (RO) and ZnO is from 21% by weight to 48% by weight of the glass.
15 . The glass according to claim 1 , wherein the total content of SiO 2 , Al 2 O 3 and B 2 O 3 is at least 25% by weight and at most 50% by weight of the glass.
16 . The glass according to claim 1 , wherein the total content of the alkaline earth oxides does not exceed a value of 42% by weight of the glass.
17 . The glass according to claim 1 , wherein the mass ratio of BaO to ZnO is at least 0.5.
18 . The glass according to claim 1 , wherein Nb 2 O 5 is up to at most 0.5% by weight of the glass.
19 . An optical fiber comprising: the glass according to claim 1 as a core glass; and a cladding glass sheathing the core glass.
20 . A use of the glass according to claim 1 as a core glass in an optical fiber.Join the waitlist — get patent alerts
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