公开(公告)号：US11059739B2

公开(公告)日：2021-07-13

申请号：US16228906

申请日：2018-12-21

Applicant: SCHOTT AG

Inventor： Matthias Wolfinger ,  Falk Gabel ,  Friedrich Siebers ,  Evelin Weiss ,  Matthias Bockmeyer ,  Oliver Hochrein

IPC: C03C10/00 ,  C03C10/12 ,  F24C15/10 ,  C03C3/087 ,  C03C3/097 ,  C03C1/00 ,  C03B23/03 ,  C03B27/012 ,  C03B32/02 ,  C03C3/083 ,  C03C4/10 ,  H05B3/74

Abstract: A sightglass for a stove is provided that has a substrate made of transparent coloured lithium aluminium silicate glass ceramic. The sightglass has a light transmittance of 0.1% to 50%. Standard illuminant D65 light, after passing through the glass ceramic, at a thickness of 4 mm, has a colour locus in the white region W1 determined by the following coordinates in the chromaticity diagram CIExyY-2°: White region W1 x
y 0.27
0.21 0.22
0.25 0.32
0.37 0.45
0.45 0.47
0.34 0.36
 0.29.