Eyewear lenses with controlled filters for night driving
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United States of America Patent
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Dec 16, 2014
Issued Date -
N/A
app pub date -
Mar 14, 2013
filing date -
Mar 14, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention is embodied in an eyewear lens with at least two controlled, limited visible light blocking filters that attenuate its transmittance spectrum. More specifically, in the present invention, the eyewear lens attenuates limited amounts of light in at least two visible wavelength regions via controlled, limited blocking filters, wherein the overall luminous transmittance is at least 75%. The at least two controlled, limited blocking filters have their peak blocking wavelengths in the region of 410-500 nm and 530-620 nm, respectively. In a preferred embodiment, the minimum transmittance that occurs within the 410-500 nm region is ≧55% and the minimum transmittance that occurs within the 530-620 nm region is ≧65%. In another preferred embodiment, the eyewear lens comprises an anti-reflective coating on its inner surface (the eye-side of the lens).
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