Glazing having switchable optical properties
AssigneeSaint-Gobain Glass France
InventorsJulien ORILLARD, Olivier SELLES
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Abstract
A glazing having switchable optical properties is described, including a transparent substrate having an outer surface and an inner surface, a reflection layer on the outer surface and/or on the inner surface and a switchable functional element arranged on the interior side with respect to the reflection layer. The reflection layer contains a material having a refractive index nR of 1.6 to 2.5. The product of the refractive index nR and the thickness d of the reflection layer is from 250 nm to 960 nm.
Claims27
A glazing having switchable optical properties, comprising:
- a transparent substrate having an outer surface and an inner surface;
- a reflection layer on the outer surface and/or on the inner surface;
- and
- a switchable functional element arranged on the interior side relative to the reflection layer,
- wherein the functional element is an electrochromic, a thermochromic, a gasochromic, a photochromic, a photoelectrochromic, a thermotropic, a PDLC or an SPD functional element,
- wherein the reflection layer contains a material having a refractive index nR,
- wherein the product of the refractive index nR and a thickness d of the reflection layer is from 250 nm to 960 nm, and
- wherein the reflection layer is a single and homogeneous layer so that the reflection is not a layer structure of individual layers.
A method for producing a glazing having switchable optical properties, comprising:
- providing a transparent substrate having an outer surface and an inner surface, a reflection layer on the outer surface and/or on the inner surface, and a switchable functional element arranged on the interior side relative to the reflection layer,
- wherein the functional element is an electrochromic, a thermochromic, a gasochromic, a photochromic, a photoelectrochromic, a thermotropic, a PDLC, or an SPD functional element,
- wherein the reflection layer contains a material having a refractive index,
- wherein the product of a refractive index nR and a thickness d of the reflection layer is from 250 nm to 960 nm, and
- wherein the reflection layer is a single and homogeneous layer so that the reflection is not a layer structure of individual layers;
- applying the reflection layer on the outer surface or on the inner surface of the transparent substrate;
- applying the switchable functional element on the outer surface or on the inner surface of a transparent cover pane or incorporating the switchable functional element into a thermoplastic intermediate layer;
- and
- bonding the transparent substrate to the transparent cover pane via the thermoplastic intermediate layer under the action of heat, vacuum, and/or pressure.
A method for producing a glazing having switchable optical properties, comprising:
- providing a transparent substrate having an outer surface and an inner surface, a reflection layer on the outer surface and/or on the inner surface, and a switchable functional element arranged on the interior side relative to the reflection layer,
- wherein the functional element is an electrochromic, a thermochromic, a gasochromic, a photochromic, a photoelectrochromic, a thermotropic, a PDLC, or an SPD functional element,
- wherein the reflection layer contains a material having a refractive index nR,
- wherein the product of the refractive index nR and the thickness d of the reflection layer is from 250 nm to 960 nm, and
- wherein the reflection layer is a single and homogeneous layer so that the reflection is not a layer structure of individual layers;
- applying the reflection layer on the outer surface or on the inner surface of the transparent substrate;
- applying the switchable functional element on the outer surface or on the inner surface of a transparent cover pane;
- and
- bonding the transparent substrate to the transparent cover pane via at least one spacer.
A method for producing a glazing having switchable optical properties, comprising:
- providing a transparent substrate having an outer surface and an inner surface, a reflection layer on the outer surface and/or on the inner surface, and a switchable functional element arranged on the interior side relative to the reflection layer,
- wherein the functional element is an electrochromic, a thermochromic, a gasochromic, a photochromic, a photoelectrochromic, a thermotropic, a PDLC, or an SPD functional element,
- wherein the reflection layer contains a material having a refractive index nR,
- wherein the product of the refractive index nR and a thickness d of the reflection layer is from 250 nm to 960 nm, and
- wherein the reflection layer is a single and homogeneous layer so that the reflection is not a layer structure of individual layers;
- applying the reflection layer on the outer surface of the transparent substrate;
- and
- applying the switchable functional element on the inner surface of the transparent substrate.
Dependencies are inferred from the claim text.