Flying spot forming apparatus and design method
US9978471B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2015 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Mar 6, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A flying spot forming apparatus includes a radiation source and a shielding body. A side wall of the shielding body is provided with at least two pairs of helical grooves. Each helical groove is provided with a predetermined slope. A first incident groove is adjacent to a second incident groove. A head end of the first incident groove is higher than a head end of the second incident groove. A tail end of the first incident groove is higher than a tail end of the second incident groove. The tail end of the first incident groove is not higher than the head end of the second incident groove. A first axial cross section of the shielding body intersects with the tail end of the first incident groove. A second axial cross section intersects with the head end of the second incident groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.