发明名称 |
OPTICAL PHASE MODULATION INSTRUMENTS |
摘要 |
<p>OPTICAL PHASE MODULATION INSTRUMENTS To obtain the refractive index of a fluid, each of two beams of light are transmitted at an angle through different ends of a vibrating quartz crystal to phase modulate the beams of light with respect to each other and then transmitted through two different flow cells before being combined at a point of nearly equal optical path length from the source of light, with the resulting interference pattern being transmitted onto a photocell to generate an electrical signal which varies periodically with the modulation of the two beams of light. The signal from the photocell and a signal representing the modulation of the crystal are compared in phase and a third signal indicates the refractive index of the effluent from the chromatographic column generated as a result of this comparison.</p> |
申请公布号 |
CA1090160(A) |
申请公布日期 |
1980.11.25 |
申请号 |
CA19770292981 |
申请日期 |
1977.12.13 |
申请人 |
INSTRUMENTATION SPECIALTIES COMPANY |
发明人 |
ALLINGTON, ROBERT W. |
分类号 |
G01N21/45;G02F1/21;(IPC1-7):01N21/46 |
主分类号 |
G01N21/45 |
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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