Patent · US Active

Polarized lenses comprising mix of NIR dyes for broad NIR protection

US12235525B2 · kind B2 · utility

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10Claims
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Assignee

Inventors

Key dates

Filing dateMar 23, 2020
Grant dateFeb 25, 2025
Priority date—
Expiry dateDec 27, 2041

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02C7/108
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

Disclosed are optical elements and the methods of producing the same. The optical element contains two or more near infrared absorbers mixed in an optical substrate, and one or more functional film disposed on the optical substrate. The method of producing the optical element comprises mixing two near infrared absorbers with different near infrared wavelengths absorption ranges and residual colors with a precursor of an optical substrate. The mixture is subsequently processed to produce an optical element that has broad near infrared wavelength absorption range, a high near infrared absorption level, and/or homogeneous color distribution.

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