Patent · US Active

Polarization measurement with interference patterns of high spatial carrier frequency

US11248955B2 · kind B2 · utility

0Cited by
4References
17Claims
0Family size

Assignee

Inventor

Key dates

Filing dateAug 9, 2019
Grant dateFeb 15, 2022
Priority date
Expiry dateSep 30, 2039

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01J3/4531
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

The present inventive concepts relate to an inspection apparatus that snapshots an interference image pattern having a high spatial carrier frequency produced from a one-piece off-axis polarimetric interferometer and that precisely and promptly measures a Stokes vector including spatial polarimetric information. The inspection apparatus dynamically measure in real-time a two-dimensional polarization information without employing a two-dimensional scanner.

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