PROBLEM TO BE SOLVED: To improve incidence efficiency of light on a detecting light transmission means from a supplying light transmission means.SOLUTION: A shape detection probe detecting a shape of a detection object includes: a light-supplying fiber 10 as a supplying light transmission means guiding light to a tip part of the shape detection probe and curvature-detecting fibers 12 as detecting light transmission means in each of which a transmission amount of light changes according to a bend angle by use of the light guided from the light-supplying fiber 10. Both the light-supplying fiber 10 and the curvature-detecting fibers 12 are partially provided with a light composition part 24 wherein the light-supplying fiber 10 and the curvature-detecting fibers 12 are integrated.COPYRIGHT: (C)2014,JPO&INPIT【課題】供給用光伝達手段から検出用光伝達手段への光の入射効率を向上すること。【解決手段】検出対象物の形状を検出する形状検出プローブは、光を該形状検出プローブの先端部へ導波する供給用光伝達手段としての光供給用ファイバ10と、該光供給用ファイバ10から導波された光を用いて曲がり角度に応じて光の伝達量が変化する検出用光伝達手段としての曲率検出用ファイバ12と、を備え、光供給用ファイバ10及び曲率検出用ファイバ12両方の光伝達方向の一部に、光供給用ファイバ10と曲率検出用ファイバ12とが一体化した光合波部24を設ける。【選択図】図1
