Patent · US Expired

Process and device for the detection of microscopically small objects

US6801311B1 · kind B1 · utility

3Cited by

7References

20Claims

0Family size

Assignee

Evotec Technologies GmbH · DE

Inventors

Gunter Fuhr · Berlin, DE
Thomas Schnelle · Berlin, DE
Christoph Reichle · Berlin, DE
Henning Glasser · Berlin, DE
Torsten Müller · Berlin, DE

Key dates

Filing date	Dec 12, 2001
Grant date	Oct 5, 2004
Priority date	—
Expiry date	Dec 12, 2021

Classification

Technology area (CPC G)Physics
CPC primaryG01N2015/1495
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

For object detection, particularly in fluidic microsystems, optical imaging of at least one resting or moving object (10) on a structured mask (20) with at least one segment from a flat section (80), in which the object (10) is located at least partially or temporarily and which has a characteristic dimension smaller than the dimension of the object (10) or its movement path, to a detector unit, detection of the quantity of light transmitted by the structured mask (20), and generation of a detector signal which has a predetermined relationship with the quantity of light, and evaluation of the detector signal in regard to the presence of the object (10), its position, its shape and/or the temporal change of the position are performed.

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