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US Patent 7477382 Atomic absorption spectrometer

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Patent
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Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7477382
Date of Patent
January 13, 2009
Patent Application Number
11522573
Date Filed
September 18, 2006
Patent Primary Examiner
‌
L. G. Lauchman
Patent abstract

An atomic absorption spectrometer is disclosed which includes a monochromater and an optical path defined by a toric mirror, a flat mirror, a flat mirror, a flat mirror, a toric mirror, and a further toric mirror. The toric mirror directs light through entrance slit of the monochromater so that radiation is reflected from diffraction grating and out exit slit to a detector. A sample stage in the form of a furnace is located between the mirrors. The monochromater is oriented so that the entrance slit is arranged transverse to the vertical. In one arrangement, a magnifying means is also provided which magnifies an image of the aperture at the sample station to increase the amount of radiation which is focused at the sample stage, and which is passed through the aperture to the detector or a focusing element provided by one of the mirrors may be provided for focusing radiation at a location other than sample station so an enlarged out of focus image of the entrance slit is produced at the sample station to increase the amount of radiation which passes through the slit and is received by the detector.

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