# US 5,705,277 A · Pane with transmission properties that vary with the angle of incidence

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- Number: US 5,705,277 A
- Document ID: US5705277A
- Status: Granted
- Kind: A
- Application number: 08/566,159
- Filed: 1995-12-01
- Granted: 1998-01-06
- Earliest claimed: 1992-11-17
- Assignees: Saint-Gobain Vitrage International
- Inventors: Philippe Marcquart; Claude Bernard
- Web page: https://patentgrep.com/patent/US5705277A

## CPC

- C23C 14/225: {Oblique incidence of vaporised material on substrate}
- C03C 17/06: with metals (C03C17/34, C03C17/44 take precedence)
- C03C 17/09: by deposition from the vapour phase
- C03C 17/245: by deposition from the vapour phase
- C03C 17/36: at least one coating being a metal
- C03C 17/3605: {Coatings of the type glass/metal/inorganic compound}
- C03C 17/3642: {the multilayer coating containing a metal layer}
- C23C 14/35: by application of a magnetic field, e.g. magnetron sputtering {(C23C14/3457 takes precedence)}
- C03C 2217/21: Oxides
- C03C 2217/25: Metals
- C03C 2217/27: Mixtures of metals, alloys
- C03C 2218/154: by sputtering
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS

## Abstract

This invention concerns a pane having a film, the light transmission of which varies as a function of the direction of the incident light. The deposition technique is cathodic sputtering. It uses, between the cathode 1 and the substrate 4, a guide 6 which channels the particles.

## Claims

### Claim 1

A pane comprising a transparent substrate and a film comprising metal or metal oxide thereon, wherein the axes of growth of said film are parallel to straight lines contained within an acute dihedral angle as viewed from points on the substrate.

### Claim 2 (depends on 1)

The pane of claim 1, wherein the dihedral angle is less than 15.degree..

### Claim 3 (depends on 2)

The pane of claim 2, wherein the dihedral angle has a bisector plane, and wherein said bisector plane makes an acute angle .alpha. with the substrate less than 40.degree..

### Claim 4 (depends on 2)

The pane of claim 2, wherein said film is made of an absorbent material and the radiation transmission varies as a function of the direction of incidence.

### Claim 5 (depends on 1)

The pane of claim 1, wherein the dihedral angle has a bisector plane, and wherein said bisector plane makes an acute angle .alpha. with the substrate less than 40.degree..

### Claim 6 (depends on 1)

The pane of claim 1, wherein said film is made of an absorbent material and the radiation transmission varies as a function of the direction of incidence.

### Claim 7

A pane comprising a transparent substrate and a film comprising metal or metal oxide upon said substrate, the said film comprising metal or metal oxide being characterized by having axes of growth of the metal of the film comprising metal or metal oxide parallel to straight lines intersecting the substrate and contained within an acute dihedral angle as viewed from points on the substrate, the dihedral angle being so oriented that its bisector plane forms with the plane of the substrate an angle less than 40.degree., the said substrate surface being a planar surface or a convex surface and being geometrically characterized by a plane termed the plane of the substrate which is a plane parallel to said planar surface or is a plane which forms a base plane for said convex surface.