Optical emission spectroscopic (OES) instrument with automatic top and bottom slit curtains
US8649007B2 · kind B2 · utility
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31Claims
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Key dates
| Filing date | Apr 30, 2010 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Mar 25, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/443
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical emission spectroscopic (OES) instrument includes a spectrometer, a processor and an adjustable mask controlled by the processor. The adjustable mask defines a portion of an analytical gap imaged by the spectrometer. The instrument automatically adjusts the size and position of an opening in the mask, so the spectrometer images an optimal portion of plasma formed in the analytical gap, thereby improving signal and noise characteristics of the instrument, without requiring tedious and time-consuming manual adjustment of the mask during manufacture or use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.