Translucent glass brick made of opal glass with light diffusible crystal particles (US Patent 4887404)

Patent number: 4887404 Granted: 1989-12-19 Filed: 1988-06-14 Inventors: Kosaburo Saji (Nagahama, JP); Shigeru Yamamoto (Kyoto, JP); Katsuhiko Imai (Otsu, JP) Assignees: Nippon Electric Glass Company, Limited (Otsu, JP)

Abstract

A translucent glass brick for use in a building wall as a lighting wall is made of a translucent opal glass in a form of a hollow glass block. The opal glass has an opal appearance and a mean light transmittance of 20-80%, in a glass thickness of 10 mm, for