Rearview mirror assemblies with anisotropic polymer laminates

  • US 10,427,606 B2
  • Filed: 12/28/2015
  • Issued: 10/01/2019
  • Est. Priority Date: 07/10/2008
  • Status: Active Grant
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First Claim
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1. A switchable mirror system (SMS) for use in a vehicular rearview assembly equipped with a light source transmitting light from within the rearview assembly through said SMS to a field-of-view (FOV) outside the assembly, the SMS comprising:

  • at least two electro-optic (EO) cells defined by at least three sequentially disposed spaced-apart glass substrates, a first EO-cell corresponding to an outside portion of the rearview assembly and a second EO-cell disposed between the first EO-cell and the light source,wherein the first EO-cell is adapted to be a switchable linear absorptive polarizer that attenuates light reflected from the second EO-cell, and does not substantially attenuate light transmitted from the light source through the second EO-cell,wherein said SMS has a reflectance value that is gradually variable in response to changes in voltages applied to the first EO-cell, and as measured in said FOV in ambient light, andwherein thicknesses of said at least three substrates are chosen to provide for a weight of said SMS per unit area of less than 2.0 grams per cm2.

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