Patent · US Active

Photonic markers enabling temperature sensing and/or security marking using low frame rate cameras

US12405174B2 · kind B2 · utility

0Cited by

3References

9Claims

0Family size

Assignee

KARLSRUHER INSTITUT FÜR TECHNOLOGIE · DE

Inventors

Ian Howard · Thornhill, CA
Dmitry Busko · Bruchsal, DE
Guojun GAO · Schloss Stutensee, DE
Ngei Katumo · Back Lane, DE
Andrey Turshatov · Griesheim, DE
Bryce Richards · Schloss Stutensee, DE

Key dates

Filing date	Dec 23, 2020
Grant date	Sep 2, 2025
Priority date	—
Expiry date	May 6, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/63
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The present invention relates to a system, method and computer-program for evaluating the photoluminescence of a photonic marker as well as to a photonic marker for temperature sensing and/or security marking and to the use of the photonic marker for temperature sensing and/or security marking. The photonic marker according to an aspect of the present invention comprises a host material selected from the group consisting of a rare earth element oxysulfide and strontium aluminate, wherein the host material is doped with Eu3+ or Eu2+ as a dopant.

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