Electron-beam device and detector system
US7425701B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2004 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Jun 16, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/2448
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron-beam device having a beam generator for generating an electron beam, an objective lens for focusing the electron beam on an object, and at least one detector for detecting electrons scattered on the object or emitted by the object. Furthermore, a detector system for detecting electrons is described. With an electron-beam device having a detector system according to the present invention, it is possible to make a selection in a simple manner, in particular according to backscattered and secondary electrons. At the same time, as many electrons as possible may be detected using the detector system. For this purpose, the electron-beam device exhibits at least one adjustable diaphragm which is allocated to the detector. The detector system exhibits a detector on which a reflector for reflecting electrons onto the detector is accommodated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.