Method of manufacturing window having at least one of radio wave stealth property and electromagnetic wave shield property, and window material having at least one of radio wave stealth property and electromagnetic wave shield property

• US 7,674,417 B2
• Filed: 09/22/2004
• Issued: 03/09/2010
• Est. Priority Date: 09/30/2003
• Status: Active Grant

• Current Assignee: Mitsubishi Heavy Industries, Ltd.
• Original Assignee: Mitsubishi Heavy Industries, Ltd.
• Inventors: Oguri, Kazuyuki
• Primary Examiner(s): WOLLSCHLAGER, JEFFREY MICHAEL
• Application Number:
  US10/946,114
• Publication Number:
  US 20050170083A1
• Time in Patent Office: 1,994 Days
• Field of Search: None
• US Class Current: 264/295
• CPC Class Codes: B64C 1/1484 Windows B64C1/1492 takes precedence
• CPC Class Codes: B64D 7/00 Arrangements of military equipment, e.g. armaments, armament accessories, or military shielding, in aircraft; Adaptations of armament mountings for aircraft dropping bombs or the like B64D1/00; armaments or mountings therefor per se F41
• CPC Class Codes: C03C 17/001 General methods for coating; Devices therefor
• CPC Class Codes: F41H 3/00 Camouflage, i.e. means or methods for concealment or disguise for vessels B63G8/34, B63G13/02 ; sound camouflage, i.e. simulating gun fire noise, F41A33/04; dummy or decoy targets F41J; chaff per se F41J2/00; ammunition for dispensing chaff F42B5/15, F42B12/70; radar absorbing fabrics H01Q17/005
• CPC Class Codes: F42B 7/00 Shotgun ammunition
• CPC Class Codes: H05K 9/0073 Shielding materials H05K9/0003 takes precedence

Abstract

There is provided a method of manufacturing a window having at least one of a radio wave stealth property and an electromagnetic wave shield property comprising: a step for forming a thin-film composed of a conductive material on the surface of a transparent window member having a curved surface, and a step for forming the thin-film into a mesh shape. As a result, it is, possible to manufacture, at lower cost, a window having a radio wave stealth property that scatters radio waves in various directions so as not to be detected by radar, while transparency to visible light is improved, as well as a window having an electromagnetic wave shield property that effectively prevents harmful electromagnetic waves, except for visible radiation, from invasion into an aircraft.

Claims

1. A method of manufacturing a window having at least one of a radio wave stealth property and an electromagnetic wave shield property comprising:

a step for forming a mesh-shaped-thin-film composed of a conductive material on the surface of a flat-shaped transparent window member, and

a step for integrally bending the window member and the thin-film, and forming into a curved shape;

wherein in said step for forming a mesh-shaped-thin-film, the thin film positioned in an area where degree of curvature is relatively higher than in other areas of the film in the subsequent bending step, is formed with a finer mesh, and

wherein after said step for integrally bending the window member and the thin-film, and forming into a curved shape, the mesh size of the mesh-shaped-thin-film in said area where degree of curvature is relatively higher is equivalent to that in said other areas.

2. A method of manufacturing a window having at least one of a radio wave stealth property and an electromagnetic wave shield property comprising:

a step for forming a mesh-shaped-thin-film composed of a conductive material on the surface of a transparent window member having a single curved surface shape, and

a step for integrally bending the window member and the thin-film, and forming into a multiple curved surface shape;

wherein in said step for forming a mesh-shaped-thin-film, the thin film positioned in an area where degree of curvature is relatively higher than in other areas of the film in the subsequent bending step, is formed with a finer mesh, and

wherein after said step for integrally bending the window member and the thin-film, and forming into a multiple curved surface shape, the mesh size of the mesh-shaped-thin-film in said area where degree of curvature is relatively higher is equivalent to that in said other areas.

3. A method of manufacturing a window having at least one of a radio wave stealth property and an electromagnetic wave shield property comprising:

a step for forming a mesh-shaped-thin-film composed of a conductive material on the surface of a flat-shaped transparent window member, and

a step for integrally bending the window member and the thin-film, and forming into a curved shape;

wherein in said step for forming a mesh-shaped-thin-film, the thin film positioned in an area where degree of curvature is relatively higher than in other areas of the film in the subsequent bending step, is formed with a thicker mesh line, and

wherein after said step for integrally bending the window member and the thin-film, and forming into a curved shape, the mesh size of the mesh-shaped-thin-film in said area where degree of curvature is relatively higher is equivalent to that in said other areas.

4. A method of manufacturing a window having at least one of a radio wave stealth property and an electromagnetic wave shield property comprising:

a step for forming a mesh-shaped-thin-film composed of a conductive material on the surface of a transparent window member having a single curved surface shape, and

a step for integrally bending the window member and the thin-film, and forming into a multiple curved surface shape;

wherein in said step for forming a mesh-shaped-thin-film, the thin film positioned in an area where degree of curvature is relatively higher than in other areas of the film in the subsequent bending step, is formed with a thicker mesh line, and

wherein after said step for integrally bending the window member and the thin-film, and forming into a multiple curved surface shape, the mesh size of the mesh-shaped-thin-film in said area where degree of curvature is relatively higher is equivalent to that in said other areas.