Lithographic apparatus and motor for use in the apparatus
US6717296B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2002 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Aug 19, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S414/135
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A Lorentz actuator provides a force between a first part and a second part of the apparatus, comprising a main magnet system, attached to a first part of the apparatus and providing a first magnetic field; a subsidiary magnet system, attached to the first part and arranged in a Halbach configuration, providing a second magnetic field; and an electrically conductive element attached to a second part of the apparatus and arranged so as to produce a force between the first and second parts of the apparatus by interaction of an electric current carried by the electrically conductive element and the combination of the first and second magnetic fields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.