Method of reducing noise generated by arc lamps in optical systems employing slits
US6411381B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | May 2, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spectroscopy system having enhanced noise reduction that comprises (i) an arc lamp light source of emitted light, which emitted light is projected as an image of the light source; (ii) a slit aperture through which the emitted light is projected; and (iii) a detector operably associated with the slit aperture for detecting the emitted light. The slit aperture, the arc lamp, and the image of the arc lamp each have a major axis. The major axis of the slit aperture is oriented essentially orthogonally to the major axis of the image of the arc lamp, so that the signal-to-noise ratio of the spectroscopy system is improved as compared to the signal-to-noise ratio of the spectroscopy system when the major axis of the slit aperture is oriented essentially parallel to the major axis of the image of the arc lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.