| 摘要 |
PURPOSE:To provide a bending angle detector capable of highly accurate detection of an angle of bending of a bending part. CONSTITUTION:This apparatus has a slender inserting part 4, a bending part 5 formed at the inserting part 4, a sensor which is arranged at the bending part 5 and employs a PVDF tube 21 made of polyvinylidene fluoride (PVDF) as polymer piezo-electric material to detect an angle of bending and a bending angle detection circuit 8 which generates a signal corresponding to an angle of bending from an output signal of the sensor while having a function of displaying the angle of bending of the bending part 5.
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