Patent · US Active

Low Ts wire grid polarizer

US10649121B2 · kind B2 · utility

3Cited by
6References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 3, 2018
Grant dateMay 12, 2020
Priority date—
Expiry dateJan 31, 2039

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B27/283
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A wire grid polarizer (WGP) can have low transmission of a primarily reflected/absorbed polarization (e.g. low Ts). The WGP can comprise an array of wires on a substrate and a stack of thin films between the substrate and the array of wires. The stack of thin films can include a first layer closest to the substrate, a second layer over the first layer, and a third layer over the second layer and closest to the array of wires. An index of refraction of the first layer can be greater than an index of refraction of the substrate, an index of refraction of the second layer can be greater than the index of refraction of the first layer, and an index of refraction of the third layer can be less than the index of refraction of the first layer.

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