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1. (WO2013114881) PROBE

Pub. No.:    WO/2013/114881    International Application No.:    PCT/JP2013/000523
Publication Date: Fri Aug 09 01:59:59 CEST 2013 International Filing Date: Fri Feb 01 00:59:59 CET 2013
IPC: A61B 8/00
H04R 1/02
Inventors: IRISAWA, Kaku
入澤 覚
ABE, Takeya
阿部 剛也
Title: PROBE
[Problem] To prevent light from leaking from a light guide plate when the light guide plate is affixed by means of a potting agent within a probe main body. [Solution] An ultrasonic transducer (12) detects acoustic waves from a subject, at the very least. An optical fiber (13) guides light exiting a light source to the probe main body. A light guide plate (14) guides light from a light entrance end optically coupled with the optical fiber (13) to a light exit end disposed in the vicinity of the ultrasonic transducer (12). The light guide plate (14) is affixed within the probe main body by means of a resin (16) formed in the periphery thereof. When the refractive index of the light guide plate (14) is n1, the refractive index of the resin (16) is n2, and the divergence angle of light entering from the optical fiber (13) is θi, the following formula is satisfied: sin-1(n2/n1)×(180°/π) < 90°-θi.