Patent ID: 8425035
Filing Date: 2013-04-23
Classification: B29D,G02B

Abstract:
1. A spectacle lens comprising: a spectacle lens body defining a surface; an antireflection coat me applied to said surface to generate a color neutral appearing residual reflectance when illuminated with a natural daylight spectrum; said antireflection coating including an interference layer system being configured to generate a color neutral appearing residual reflectance when illuminated with an illumination spectrum which departs from said natural daylight spectrum; and, said interference layer system including a plurality of layers wherein each two mutually adjacent ones of said layers are made of respective materials having indices of refraction different from one another; wherein said illumination spectrum is a spectrum in one of the standard color temperature ranges; warm white, neutral white, or daylight; or, said illumination spectrum is one of the CIE standard spectra A and CIE standard spectra C; said color neutral appearing residual reflectance having a color coordinate a* of the L*a*b*-color coordinate system lying in the range of [−1.5]<a*<[1.5]; said color neutral appearing residual reflectance having a color coordinate b* of the L*a*b*-color coordinate system lying in the range of [−1.5]<b*<[1.5]; and, said color neutral appearing residual reflectance having a color coordinate L* of the L*a*b*-color coordinate system lying in the range of [0]<L*<[7].