Patent ID: 9612386
Date: 2017-04-04
CPC Classifications: B32B,G02B

Claim:
1. A luminous glazing unit comprising: a first glass substrate, made of mineral glass having a refractive index n1 of less than 1.6 at 550 nm, with first and second main faces and an edge face, and in optical contact with the first main face: a light source, optically coupled to the first glass substrate, the first glass substrate configured to guide the light emitted by the light source, a light-extracting device associated with the first glass substrate, wherein the optical isolator comprises a low-index film, made of fluoropolymer-based material which: has a refractive index n2 at 550 nm such that n1-n2 is at least 0.08, has a thickness e2 of at least 600 nm, is in optical contact with the first main face by a first lamination interlayer, based on a thermoplastic material which has a refractive index n3 at 550 nm such that n3-n1, as an absolute value, is less than 0.05.