Nephelometer
US6020961A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1998 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Jul 29, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/253
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The Nephelometer comprises an illumination device (10) and a detector device (19). By means of the illumination device (10), a sample to be analyzed being arranged in a chamber (16) is illuminated, the scattered light emanating from the sample being detected by the detector device (19). A central shading element (17) arranged in a plane conjugate to the light source (11) of the illumination device (10) is located between the sample chamber (16) and the detector device (19). The detector device (19) further comprises another shading element (20) located in a plane conjugate to the exit opening shutter (15) of the illumination device (10). Direct light from the sample to be analyzed is absorbed by the central shading element (17), while the further shading element (20) absorbs stray light exiting from the exit opening shutter (15) of the illumination device (10) and impinging on the entrance lens arrangement (18) of the detector device (19) without passing through the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.