Apparatus for producing an accurately aligned aperture of selectable diameter
US5214492A · kind A · utility
20Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1991 |
| Grant date | May 25, 1993 |
| Priority date | — |
| Expiry date | Aug 2, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus having a set of apertures of selected diameters, each aperture being positioned in a multiaperture assembly that can be moved to bring selectively each of these apertures into a path of a beam. This enables control of the diameter of an aperture in a beam and also enables accurate positioning of that aperture so that it is centered on the beam where it is moved to a position of alignment with the beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.