| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical measuring apparatus for measuring the intensity of the transmitted light or scattered light from a liquid sample irradiated with light, capable of preventing noise effect of a circuit or disturbance noise, to enable measuring still more enhanced in accuracy and measuring the intensities of the transmitted light from the sample, which is irradiated with a plurality of lights of different wavelengths at the same time, for each wavelength. SOLUTION: An optical measuring apparatus is constituted of a light source device 1 emitting light having a single wavelength by a drive signal of a predetermined cycle pattern and a light detector 2, catching the light from a liquid sample 4 to convert the same to an electric signal and detecting the signal, corresponding to the pattern of the drive signal. Furthermore, an optical measuring apparatus is constituted of a light source device emitting a plurality of lights having a single wavelength by a plurality of drive signals of different periods or phases and a light detector catching the lights from a liquid sample to convert them into electrical signals and detecting the signals of component corresponding to the periods or phase of the drive signals.
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