| 摘要 |
PROBLEM TO BE SOLVED: To provide a biological information detecting apparatus, efficiently and accurately receiving scattered light of observation light applied to the skin to detect biological information such as pulse wave accurately and easily. SOLUTION: The observation light of a specific wavelength band emitted from a light emitting element 6 for optically observing the skin tissue of a human body is guided to an annular light guide member 7 to be annularly diffused and irradiated to the skin H, and the scattered light taken from the skin H through an observation light taking part 8 located in the central area within the irradiated annular irradiating area E is received by a light receiving element 9. Thus, the observation light from the light emitting element 6 is annularly and uniformly diffused and irradiated to the skin H in a wide range, and only the scattered light taken from the skin H can be efficiently and accurately received by the light receiving element 9, so that biological information can be accurately and easily detected based on the received scattered light. COPYRIGHT: (C)2011,JPO&INPIT
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