Anti-scatter, ultraviolet protected, anti-misting, electro-optical assemblies

  • US 5,073,012 A
  • Filed: 03/20/1990
  • Issued: 12/17/1991
  • Est. Priority Date: 02/12/1988
  • Status: Expired due to Term
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First Claim
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1. An anti-lacerative, scatter protected, laminate, electro-optic rearview mirror assembly adapted to reduce laceration injuries and scattering of glass fragments if damaged or broken comprising:

  • first and second spaced, optically transparent elements mounted in a mirror case, said elements each having front and rear surfaces and defining a space between the rear surface of said first element and the front surface of said second element;

    an electro-optic medium confined in said space whose light transmittance is variable upon the application of an electric field thereto;

    means for applying an electric field to said electro-optic medium to cause variation in the light transmittance of said medium;

    a reflective coating on one surface of said second element adapted to reflect light incident thereon through said first element and said electro-optic medium; and

    a layer of optically transparent, tear/perforation resistant material adhered to said front surface of said first element for retaining and preventing scattering of fragments from said element in the event of damage/breakage of said first element and for reducing the risk of laceration from contact with said first element when damaged/broken;

    said first element being a laminate assembly including a pair of glass panels adhered to one another by a polymer layer which also reduces UV radiation transmittance to said assembly and electro-optic medium;

    said layer of transparent, tear/perforation resistant material being adhered to the front surface of the outermost of said pair of glass panels, reducing UV transmission to said assembly, and being selected from the group including reticulated polyurethane and a composite including a layer of polyvinylbutyral and a layer of polyester.

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