| 摘要 |
A measurement condition setting fixture 2 is secured to a measurement site 1 of a living body prior to the measurement. At the time of measurement, a light irradiation section 3 and a light receiving section 5 of a measuring optical system are respectively attached and secured to a light irradiation section securing section 10 and a light receiving section securing section 11 of the measurement condition setting fixture 2. Thus, the measurement site 1 and the measuring optical system are secured to each other, and desirable measurement conditions can be realized. Moreover, the measurement conditions can be maintained throughout the measurement. After the measurement is completed, the measurement site 1 can be removed from the measuring optical system by detaching the light irradiation section 3 and the light receiving section 5 from the light irradiation section securing section 10 and the light receiving section securing section 11. When the measurement is performed again, the desirable measurement conditions can be reproduced merely by attaching the light irradiation section 3 and the light receiving section 5 to the light irradiation section securing section 10 and the light receiving section securing section 11.
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