Optical inspection method and apparatus
US5353112A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1992 |
| Grant date | Oct 4, 1994 |
| Priority date | — |
| Expiry date | Jun 15, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0085
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for optical inspection of particulate material such as diamond abrasive comprises a body (1), an open sample container (25) which can rise and fall in the body, a reference member (71) above the container, mounted in a removable compaction head (9) of which the height relative to the body is fixed, and an optical inspection head (11) mountable on the body in place of composition head. The container is raised into contact with the reference member so that the surface of the sample is levelled and placed at a predetermined height. The compaction head is then removed and replaced by the optical inspection head. Consequently, the sample surface is always presented to the optical inspection head in a predetermined relationship and in particular at a predetermined height.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.