Functional dyed spectacle lens

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10025117
APP PUB NO 20160313574A1
SERIAL NO

15153094

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A functional dyed lens for spectacles is obtained by dyeing at least one of the surfaces of an undyed plastic lens, and in the functional dyed lens, a dyeing density defined as a difference in luminous transmittance from the undyed plastic lens is 2% or more but 4% or less, and a difference in average transmittance from the undyed plastic lens in a wavelength region of 530 nm to 570 nm is 3% or more but 5% or less.

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Patent Owner(s)

Patent OwnerAddress
NIKON-ESSILOR CO LTDJAPAN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawamura, Yuko Tokyo, JP 4 157
Takedomi, Yuka Tokyo, JP 1 3

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