发明名称 |
Double polarized light beam spectrophotometer of light source modulation type |
摘要 |
A double polarized light beam spectrophotometer of a light-source modulation type. A modulated light beam emitted by a light source is conducted through specimen atom vapor generated by a graphite atomizer. Wavelength of light undergone atom absorption is selected and spatially separated into a pair of linearly polarized light beams perpendicular to each other. The pair of the linearly polarized light beams separated are alternately passed through a chopper and received by a photoelectric conversion device to be converted into electric signals which are utilized for determining atomic absorption of the specimen. The phase of modulation of light radiated from the light source is synchronized with phase of a current supplied to the graphite atomizer for heating thereof and the switching timing of the chopper.
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申请公布号 |
US4645341(A) |
申请公布日期 |
1987.02.24 |
申请号 |
US19840604939 |
申请日期 |
1984.04.27 |
申请人 |
HITACHI, LTD. |
发明人 |
KOGA, MASATAKA;KITAGAWA, MASATOSHI;OISHI, KONOSUKE |
分类号 |
G01J3/447;G01J3/427;G01N21/31;G01N21/74;(IPC1-7):G01J3/42 |
主分类号 |
G01J3/447 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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