| 摘要 |
<p>An examination apparatus (1) measures oxygenation of objects (40) with near infrared light transmission spectrophotometry. The apparatus includes a plurality of light sources (LD1-LD4) controlled by a light source controller (2, 55) an illumination side fixture (51) for applying the radiation to the object (40), a receiving side fixture (52) for receiving radiation transmitted through the object (40), a transmitted light detection device (4, 22), and a computer system (3, 27) for controlling the system and analysing the output. To adjust automatically a transmitted light quantity to a mangitude suitable for a detection the examination apparatus includes a neutral density filter (5) having a variable transmission factor which is controlled by a driver (6) to set it at its optimum value throughout the measurement or includes a plurality of detection modes (25, 61, Figure 7) and the computer system (22) selects the appropriate detection mode.</p> |
