Patent · US Active

Device including photoconductor readout circuit for measuring differential voltages of a photoconductor

US11791424B2 · kind B2 · utility

0Cited by

5References

11Claims

0Family size

Assignee

TRINAMIX GMBH · DE

Inventors

Celal Mohan OEGUEN · Ludwigshafen, DE
Bernd Scherwath · Ludwigshafen, DE
Peter Fejes · Västerås, SE
Felix Mueller · Wappenswil, CH

Key dates

Filing date	Jan 29, 2021
Grant date	Oct 17, 2023
Priority date	—
Expiry date	Jan 29, 2041

Classification

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

Abstract

A device includes at least one photoconductor configured for exhibiting an electrical resistance Rphoto dependent on an illumination of a light-sensitive region of the at least one photoconductor and at least one photoconductor readout circuit. The photoconductor readout circuit is configured for determining a differential voltage related to changes of the electrical resistance Rphoto of the photoconductor. The photoconductor readout circuit includes at least one bias voltage source configured for applying at least one periodically modulated bias voltage to the photoconductor such that the electric output changes its polarity at least once. The device further includes at least one electrical circuit configured to balance the differential voltage at a given illumination level.

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