| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact device for detecting angular variation with profitable layout, without using a proximity sensor. SOLUTION: The device includes an optical fiber 21 mounted bendably to an oscillation member 10, in response to an oscillation angle from a secure state of a light guide function to a bending state (a bending section 21c) that cannot obtain the light guide function, a light source 24 arranged facing on the side of an end 21a of the fiber 21, and a light-detecting means 25 oppositely arranged on the side of the other end 21b of the fiber 21. In the fiber 21, the side of one end 21a is mounted to the oscillation member 10, and the side of the other end 21b is mounted to the fixation member. The source 24 is mounted to the oscillation member 10, facing the side of one end 21a of the fiber 21. The detecting means 25 is mounted to the fixation member facing the side of the other end 21b of the fiber 21. COPYRIGHT: (C)2007,JPO&INPIT
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