Optical component and glass composition as well as use thereof
A glass includes: a plurality of components (in wt.-%) as follows: Component Proportion (% by weight) SiO 2 50-80 Al 2 O 3 0-10 B 2 O 3 0-15 Li 2 O 0-20 Na 2 O 0-20 K 2 O 0-25 BaO 0-10 CaO 0-10 MgO 0-10 ZnO 0-10 La 2 O 3 0-20 TiO 2 0-5 Cl 0-3 MnO 2 0.2-5.0 Cr 2 O 3 0.05-3.0, a sum of a plurality of proportions of Li 2 O, Na 2 O and K 2 O being in a range of from 5.0 to 30.0 wt.-%, a sum of a plurality of amounts of MnO 2 and Cr 2 O 3 being at least 0.3 wt.-%, and a ratio of a plurality of proportions of MnO 2 (in wt.-%) and Cr 2 O 3 (in wt.-%) being in a range of from 1.5:1 to 12.5:1.
1. A glass, comprising:
a plurality of components (in wt.-%) as follows:
Component
Proportion (% by weight)
SiO 2
50-80
Al 2 O 3
0-10
B 2 O 3
0-15
Li 2 O
0-20
Na 2 O
0-20
K 2 O
0-25
BaO
0-10
CaO
0-10
MgO
0-10
ZnO
0-10
La 2 O 3
0-20
TiO 2
0-5
Cl
0-3
MnO 2
0.2-5.0
Cr 2 O 3
0.05-3.0,
a sum of a plurality of proportions of LiO, Na 2 O and K 2 O being in a range of from 5.0 to 30.0 wt.-%, a sum of a plurality of amounts of MnO 2 and Cr 2 O 3 being at least 0.3 wt.-%, and a ratio of a plurality of proportions of MnO 2 (in wt.-%) and Cr 2 O 3 (in wt.-%) being in a range of from 1.5:1 to 12.5:1, wherein the glass has at least one of:
(a) a hydrolytic resistance according to class 1 of DIN ISO 719:2020-09;
(b) a hydrolytic resistance according to class 1 of DIN ISO 720:1989-12;
(c) an alkaline resistance according to class 2 of DIN ISO 695:1994-02; and
(d) an acid resistance according to class 1 of DIN 12116:2001-03.
2. The glass according to claim 1 , wherein at least one of:
(a) an amount of Cr 2 O 3 is in a range of from 0.1 to 2.5 wt.-%; and
(b) an amount of MnO 2 is in a range of from 0.3 to 4.5 wt.-%.
3. The glass according to claim 2 , wherein at least one of:
(a) the amount of Cr 2 O 3 is in a range of from 0.15 to 2.0 wt.-%; and
(b) the amount of MnO 2 is in a range of from 0.5 to 4.0 wt.-%.
4. The glass according to claim 1 , wherein at least one of:
(a) an amount of Cr 2 O 3 is in a range of from 0.2 to 3.0 wt.-%;
(b) an amount of MnO 2 is in a range of from 1.0 to 5.0 wt.-%; and
(c) the sum of the plurality amounts of MnO 2 and Cr 2 O 3 is at least 2.7 wt.-%.
5. The glass according to claim 4 , wherein at least one of:
(a) an amount of Cr 2 O 3 is in a range of from 0.5 to 2.5 wt.-%;
(b) an amount of MnO 2 is in a range of from 1.5 to 4.5 wt.-%; and
(c) the sum of the plurality amounts of MnO 2 and Cr 2 O 3 is at least 2.7 wt.-%.
6. The glass according to claim 1 , wherein an amount of Cl is at least 0.1 wt.-%.
7. The glass according to claim 1 , wherein the glass at a sample thickness of 2 mm has at least one of:
(a) an average transmittance for light of a wavelength in a range of from 250 nm to 700 nm of at most 0.01%;
(b) a maximum transmittance for light of a wavelength in a range of from 250 nm to 700 nm of at most 5.0%;
(c) an average internal transmittance for light of a wavelength in a range of from 250 nm to 700 nm of at most 0.1%; and
(d) a maximum internal transmittance for light of a wavelength in a range of from 250 nm to 700 nm of at most 5.0%.
8. The glass according to claim 1 , wherein the glass at a sample thickness of 2mm has at least one of:
(a) at least one of an average transmittance and a minimum transmittance for light of a wavelength in a range of from 1250 nm to 1350 nm of at least 50%; and
(b) at least one of an average internal transmittance and a minimum internal transmittance for light of a wavelength in a range of from 1250 nm to 1350 nm of at least 50%.
9. The glass according to claim 1 , wherein the glass at a sample thickness of 2 mm has at least one of:
(a) at least one of an average transmittance and a minimum transmittance for light of a wavelength in a range of from 1500 nm to 1600 nm of at least 50%; and
(b) at least one of an average internal transmittance and a minimum internal transmittance for light of a wavelength in a range of from 1500 nm to 1600 nm of at least 50%.
10. The glass according to claim 1 , wherein the glass at a sample thickness of 4 mm has at least one of:
(a) an average transmittance for light of a wavelength in a range of from 250 nm to 700 nm of at most 10%;
(b) a maximum transmittance for light of a wavelength in a range of from 250 nm to 700 nm of at most 15.0%;
(c) an average internal transmittance for light of a wavelength in a range of from 250 nm to 700 nm of at most 10%; and
(d) a maximum internal transmittance for light of a wavelength in a range from 250 nm to 700 nm of at most 15%.
11. The glass according to claim 1 , wherein the glass at a sample thickness of 2 mm has an internal transmittance at a wavelength of 1550 nm of at least 94.0%.
12. The glass according to claim 1 , wherein the glass has at least one of:
(a) a hydrolytic resistance according to class 1 of DIN ISO 719:2020-09;
(b) a hydrolytic resistance according to class 1 of DIN ISO 720:1989-12;
(c) an alkaline resistance according to class 1 of DIN ISO 695:1994-02; and
(d) an acid resistance according to class 1 of DIN 12116:2001-03.
13. A glass article, comprising:
a glass including a plurality of components (in wt.-%) as follows:
Component
Proportion (% by weight)
SiO 2
50-80
Al 2 O 3
0-10
B 2 O 3
0-15
Li 2 O
0-20
Na 2 O
0-20
K 2 O
0-25
BaO
0-10
CaO
0-10
MgO
0-10
ZnO
0-10
La 2 O 3
0-20
TiO 2
0-5
Cl
0-3
MnO 2
0.2-5.0
Cr 2 O 3
0.05-3.0,
a sum of a plurality of proportions of Li 2 O, Na 2 O and K 2 O being in a range of from 5.0 to 30.0 wt.-%, a sum of a plurality of amounts of MnO 2 and Cr 2 O 3 being at least 0.3 wt.-%, and a ratio of a plurality of proportions of MnO 2 (in wt.-%) and Cr 2 O 3 (in wt.-%) being in a range of from 1.5:1 to 12.5:1, the glass article having a thickness in a range of from 1.0 mm to 7.0 mm, wherein at least one of:
(a) a sum of all cross-sections of all bubbles and inclusions ≥0.03 mm in diameter is at most 0.5 mm 2 per 100 cm 3 of a glass volume;
(b) the glass article has a characteristic value of at most 1.30 per mm thickness of the glass article in a stone impact test according to method A of DIN EN ISO 20567-1:2017-07; and
(c) the glass article has a total loss of weight of at most 150 mg per mm thickness of the glass article in a stone impact test according to method A of DIN EN ISO 20567-1:2017-07.
14. The glass article according to claim 13 , wherein the glass article fulfills at least one of the following conditions:
i) ΔT sol (905 nm)=T(905 nm)| initial −T(905 nm)| irradiated , wherein ΔT Sol is less than 5%;
ii) ΔT Sol (1320 nm)=T(1320 nm)| initial −T(1320 nm)| irradiated wherein ΔT Sol is less than 5%; and
iii) ΔT Sol (1550 nm)=T(1550 nm)| initial −T(1550 nm)| irradiated wherein ΔT sol is less than 5%;
wherein T(λ) initial is a transmission at a wavelength λ of a sample having a sample thickness of 4 mm prior to an irradiation, T(λ) irradiated is a transmission at a wavelength λ of a sample having a sample thickness of 4 mm after an irradiation of 15 hours with a HOK 4 lamp, and ΔT sol is a difference between T(λ) initial and T(λ) irradiated .
15. The glass article according to claim 13 , wherein at least one of:
(a) a sum of all cross-sections of all bubbles and inclusions ≥0.03 mm in diameter is at most 0.25 mm 2 per 100 cm 3 of a glass volume;
(b) the glass article has a characteristic value of at most 1.30 per mm thickness of the glass article in a stone impact test according to method A of DIN EN ISO 20567-1:2017-07; and
(c) the glass article has a total loss of weight of at most 150 mg per mm thickness of the glass article in a stone impact test according to method A of DIN EN ISO 20567-1:2017-07.
16. The glass article according to claim 13 , wherein the glass article is formed at least in part by an optical window, which forms in part a LiDAR system including a laser and the optical window positioned between the laser and a surrounding.