| 摘要 |
PROBLEM TO BE SOLVED: To adjust the output signal value of a photodetection part to an appropriate size without the need of a large-sized driving part and to obtain a high measurement speed and high measurement accuracy. SOLUTION: The changeover of the incidence/non-incidence of light to the respective photodetection parts or the adjustment of the intensity of the light to the respective photodetection parts is performed by a reflection type optical modulator, and by using the reflection type optical modulator constituted by integrating plural optical reflection elements on a semiconductor chip, miniaturization is performed and the high measurement speed and measurement accuracy are obtained. Also, in the drive of the reflection type optical modulator, by making the adjustment of the reflection angle of the optical reflection elements correspond to an irradiation part, the high measurement accuracy is obtained. This optical measurement device for irradiating a testee body with the light and measuring the light discharged to the outside after being transmitted and/or reflected in the testee body is provided with the irradiation part for irradiating the testee body with the light, a light reception part for receiving and detecting the discharged light and the reflection type optical modulator provided with the plural optical reflection elements integrated on the semiconductor chip. The reflection angle of the optical reflection elements is adjusted corresponding to the irradiation state of the irradiation part.
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