LUMINOUS GLAZING UNIT WITH OPTICAL ISOLATOR AND MANUFACTURE THEREOF

摘要

A luminous glazing unit includes a first glass substrate, made of mineral glass and in optical contact with a second glass substrate, a polymer layer, selected from a lamination interlayer, associated with a tinted and/or reflective element, and/or an opaque polymer encapsulation, a porous silica layer, underneath the polymer layer, a light source, optically coupled to the first glass substrate, and a light-extracting device associated with the first glass substrate, a mineral and transparent protective coating made of silica, directly on the porous silica layer and directly underneath the polymer layer.

主权项

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 glass substrate:
a polymer layer, selected from at least one of the following elements:
a lamination interlayer, made of thermoplastic material, associated with a tinted and/or reflective element and/oran opaque polymer encapsulation or a polymer encapsulation primer underneath an opaque polymer encapsulation,an optical isolator directly on the first glass substrate and underneath the polymer layer, the optical isolator comprising a porous silica layer having a thickness e2 of at least 400 nm, having a refractive index n2 at 550 nm of at most 1.35 at 550 nm, a light source, optically coupled to the first glass substrate, the first glass substrate to guide the light emitted by the light source, a light-extracting device associated with the first glass substrate, anda mineral and transparent protective coating provided directly on the porous silica layer and directly underneath the polymer layer, the transparent protective coating comprising a silica layer with a thickness e3 of greater than 50 nm and a refractive index n3 of at least 1.4 at 550 nm.