Remote vehicle emission analyzer with light conveyance to detectors through fiber optic light tubes
US5644133A · kind A · utility
33Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1995 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Jul 25, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/255
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A mechanical optical system scans a light beam that has passed through an automobile exhaust plume onto a plurality of detectors by using fiber optic tubes in an array that is mounted close to a rotating mirror. First ends of the fiber optic tubes are in an array adjacent the mirror and second ends of the fiber optic tubes feed the scanned light beam onto respective detectors that detect various gaseous components in the vehicle exhaust. Using the fiber optic tubes eliminates the need for secondary mirrors and reduces the requirement for highly accurate optical alignment among the components of the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.