| 摘要 |
A biological molecule detecting apparatus capable of highly sensitive measurements is provided. The emission direction of an orientation controlling light beam was periodically switched, to periodically switch the orientation direction of binding molecules 15 within a solution. Components, which are synchronized with the orientation periods of the binding molecules are extracted from fluorescence emitted by fluorescent molecules within the solution, are extracted and detected. Thereby, the concentration of a detection target substance can be accurately measured with a simple configuration.
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