Spectrographic apparatus with chopper means located in the sample cell
US4193695A · kind A · utility
6Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1978 |
| Grant date | Mar 18, 1980 |
| Priority date | — |
| Expiry date | Jan 26, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/0232
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical system for a spectroscopic analyzer. The system has a light source, a detector and a sample cell connected in a line, and in the sample cell or between the sample cell and one of the other elements is a light chopper device. The light chopper has a rotating element in the form of a disc-shaped member or members which periodically block light from the light source and pass light during the times it is not blocked. The rotating element is driven by a motor on the outside of the structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.