| 摘要 |
A measurement probe includes an illumination fiber configured to irradiate a body tissue with illumination light, and a plurality of light receiving fibers configured to receive return light of the illumination light that is reflected and/or scattered from the body tissue. The illumination fiber and the light receiving fibers satisfy the following condition expressions: 0.21<NA<0.30 (1) 15μm<Dcore<45μm (2) 0.40<Dcore/Dclad<0.80 (3), where NA indicates a numerical aperture of each of the illumination fiber and the receiving fibers, Dcore indicates a core diameter of each of the illumination fiber and the light receiving fibers, and Dclad indicates a cladding diameter of each of the illumination fiber and the light receiving fibers. |
