| 摘要 |
PROBLEM TO BE SOLVED: To provide a small optical system capable of being easily disposed in even small precision mechanical equipment.SOLUTION: An optical sensor 10 includes: a light source 20 for emitting light; a characteristic light guide member 40 for guiding the light emitted from the light source 20; a characteristic changing section 50 which is disposed in the characteristic light guide member 40 to change an optical characteristic of the light according to a curvature amount of the characteristic light guide member 40; a detection section 60 for detecting light which is changed in the optical characteristic by the characteristic changing section 50 and is guided by the characteristic light guide member 40; and a light connection section 70 which is optically connected to the light source 20, the characteristic light guide member 40 and the detection section 60. The light connection section 70 includes a light branch section 71 for branching the light emitted from the light source 20 to the characteristic light guide member 40 and branching the light guided by the characteristic light guide member 40 to the detection section 60 and a substrate section 79 in which a light guide path 75 including the light branch section 71 is disposed. |
