| 摘要 |
<p>1,219,015. Laminates. LIBBEY-OWENS FORD CO. 12 March, 1968 [17 March, 1967], No. 11962/68. Heading B5N. [Also in Divisions C7, E1 and G2] A light-transmitting article, e.g. a window, comprises a transparent sheet, preferably of glals, a light-modifying optical film of thickness 300 to 650 Š adhered to one surface of the sheet comprising a layer of copper metal in contact with the sheet surface and an integral layer of copper oxide covering the copper layer, the filmed sheet having a transmittance for the C line in the range 15% to 45% and means preventing exposure of the copper-copper oxide film to the atmosphere. In one embodiment the filmed sheet 12, 13, 15 is laminated to a second glass sheet 17 by a layer of polyvinyl butyral resin. In a second embodiment two sheets of glass 19, 20 are held in spaced face-to-face relationship by separator means 22 disposed around their edges to enclose a space 21, the sheet 19 have the copper-copper oxide film 28, 29 on that surface defining one side of the space 21. The space is filled with nitrogen. If desired the filmed side of the sheet may have a protective coating of SiO 2 , Al 2 O 3 or MgF 2 . The total solar energy reflectance of the outwardly disposed surface of the coated sheet is 25%-65% and the C line reflectance of that surface of the uncoated sheet is 10%-16%. The thickness of the initial copper coating is chosen to give a transmittance of 4-25%.</p> |
