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US 5,844,721 AGranted
Motor vehicle rearview mirror
OwnerDaniel Nathan Karpeninventor
Life of this patent
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OwnerDaniel Nathan Karpeninventor
Estimating the term…
A rearview mirror suitable for use as a rearview mirror for land, water and aircraft and motor vehicles in particular. The glass mirror includes glass containing Neodymium Oxide, a rare earth compound. The Neodymium Oxide filters out the naturally occurring yellow light produced by a hot incandescent filament, thereby producing a color-corrected light. Yellow light contributes to a lack of contrast. Improvement in contrast permits, for example, a motor vehicle driver to better discriminate the contrast of objects when there is no daylight and the only illumination is artificial. For drivers, in particular, elimination of the excessive yellow light lessens eyestrain currently resulting from light emitted by the conventional headlights of vehicles in the rearview mirror during hours of darkness. Additionally, the Neodymium Oxide in the glass will filter out the yellow light from the rising or setting sun in the rearview mirror.
A rearview mirror for motor vehicles, which reduces visual discomfort and eyestrain, and improves color recognition, by reducing the amount of reflected yellow light in the range of 565 to 595 manometers, consisting of:
Dependencies are inferred from the claim text.