Patent · US Active

Tinted polarized lenses having selective frequency filtering

US9891448B2 · kind B2 · utility

3Cited by
7References
22Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 8, 2014
Grant dateFeb 13, 2018
Priority date—
Expiry dateAug 8, 2034

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02C2202/16
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A tinted polarized lens for attenuating ambient light reducing glare and improving color discrimination for a user is disclosed. In some embodiments, the lens has uniform transmittance across the visible spectrum with selective filtering of light at 480 nm and 580 nm. In some embodiments, the lens may reduce light in the blue region of the spectrum while maintaining color discrimination. In some embodiments, the level of attenuation provided by the lens may vary based on the intensity of light present while maintaining selective filtering at 480 nm and 580 nm.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.