| 摘要 |
<p>A probe is shown. According to one implementation, the following is included at a tip of the probe, as the optical system. A first optical fiber system forms an irradiating light guiding path to guide irradiating light. A second optical fiber system forms a receiving light guiding path to guide measuring light. A condenser lens system is positioned opposed to the first optical fiber system and the second optical fiber system, and the irradiating light is irradiated thereon and the measuring light is condensed. An optical axis of the condenser lens system, a central axis of a light emitting end of the first optical fiber system, and a central axis of a light receiving end of the second optical fiber system are positioned so a straight line which passes through two axes does not pass through a remaining axis.</p> |
