Patent · US Active

Method for counting photons by means of a photomultiplier

US11215503B2 · kind B2 · utility

0Cited by

5References

14Claims

0Family size

Assignee

LEICA MICROSYSTEMS CMS GMBH · DE

Inventors

Holger Birk · Meckesheim, DE
Bernd Widzgowski · Dossenheim, DE

Key dates

Filing date	Aug 28, 2018
Grant date	Jan 4, 2022
Priority date	—
Expiry date	Aug 31, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG01J2001/4446
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for counting photons using a photomultiplier includes obtaining a measurement signal from a raw signal produced by the photomultiplier by correcting the raw signal for a noise signal and/or an offset, wherein an incident photon produces a pulse in the raw signal. The measurement signal is integrated over time to form an analog integrated measurement signal. A number of photons that are incident in the photomultiplier is ascertained by comparing a value of the analog integrated measurement signal to an integral proportionality value which corresponds to a specific number of photons incident in the photomultiplier.

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